CN118056541A - Motorized surgical instrument - Google Patents

Abstract

The present application relates to the technical field of medical devices, and in particular to an electric surgical instrument. The electric surgical instrument includes a main unit, a battery pack, and a convertible electrode assembly; the convertible electrode assembly includes a first electrode assembly and a second electrode assembly, one of which is arranged on the main unit, and the other is arranged on the battery pack; the first electrode assembly includes a first positive electrode assembly and a first negative electrode assembly, and the second electrode assembly has a second positive electrode assembly corresponding to the first positive electrode assembly and a second negative electrode assembly corresponding to the first negative electrode assembly in both the forward insertion posture and the reverse insertion posture, so that the first positive electrode assembly is in contact with the second positive electrode assembly and is in conduction, and the first negative electrode assembly is in contact with the second negative electrode assembly. When using the electric surgical instrument, the user can use the main unit and the battery pack in forward and reverse insertion, without the need for an anti-foolproof structure, and without adjusting the relative position of the battery pack and the main unit according to the anti-foolproof structure, thereby improving assembly efficiency and convenience.

Description

Electric surgical instruments

Technical Field

The present application relates to the technical field of medical instruments, and in particular to an electric surgical instrument.

Background technique

As is known to all, electric surgical instruments have been widely used in intracavitary surgeries such as abdominal surgeries. Electric surgical instruments usually rely on the power provided by batteries to complete operations such as cutting and suturing of tissues.

Specifically, the electric surgical instrument includes a battery pack and a main unit. The battery pack and the main unit are detachably connected. In order to avoid the two being plugged in reverse and causing the normal power supply function to fail, an anti-foolproof structure is generally set between the two. When the user is in use, if the anti-foolproof structure is not in the correct position, the two cannot be plugged in.

Although this fool-proof structure can effectively prevent the battery pack from being plugged in reverse with the host, if the two cannot be plugged in, the battery pack needs to be realigned and then plugged in with the host until the two are successfully plugged in, which affects the convenience and efficiency of plugging in.

Summary of the invention

The purpose of the present application is to provide an electric surgical instrument to solve, to a certain extent, the technical problem in the prior art that the battery pack and the main unit can only be plugged in straight, resulting in the need for the two to be specially aligned before successful plugging, which makes plugging inconvenient.

The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

An electric surgical instrument, comprising a main unit, a battery pack and a convertible pole piece assembly; the battery pack is detachably plugged into the main unit in a forward insertion posture or a reverse insertion posture;

The convertible pole piece assembly includes a first pole piece assembly and a second pole piece assembly, one of the first pole piece assembly and the second pole piece assembly is arranged on the host, and the other is arranged on the battery pack;

The first electrode sheet assembly includes a first positive electrode sheet and a first negative electrode sheet, and the second electrode sheet assembly has a second positive electrode sheet corresponding to the first positive electrode sheet and a second negative electrode sheet corresponding to the first negative electrode sheet in both the forward insertion posture and the reverse insertion posture, so that the first positive electrode sheet is in contact with the second positive electrode sheet and is conductive, and the first negative electrode sheet is in contact with the second negative electrode sheet and is conductive, so that the host and the battery pack are electrically connected.

As a preferred embodiment, one of the host and the battery pack having the first electrode sheet assembly is a first device, and the electrodes of the first device include a first positive electrode and a first negative electrode; the first positive electrode sheet is electrically connected to the first positive electrode, and the first negative electrode sheet is electrically connected to the first negative electrode; one of the host and the battery pack having the second electrode sheet assembly is a second device, and the electrodes of the second device include a second positive electrode and a second negative electrode; in the forward plugging posture and the reverse plugging posture, the second positive electrode sheet is electrically connected to the second positive electrode, and the second negative electrode sheet is electrically connected to the second negative electrode.

As a preferred embodiment, the second pole piece assembly includes a first switchable pole piece, a second switchable pole piece and a switch assembly; a three-dimensional coordinate system is defined, the Z axis is collinear with the axis of the battery pack in the plugged state, the X axis is arranged in the horizontal direction, the Y axis is arranged in the vertical direction, and the plane where the X axis and the Y axis are located forms four quadrants; the quadrant corresponding to the first positive pole piece and the quadrant corresponding to the first negative pole piece are arranged diagonally; the quadrant corresponding to the first switchable pole piece is the same as the quadrant corresponding to the first positive pole piece, and the quadrant corresponding to the second switchable pole piece is the same as the quadrant corresponding to the first negative pole piece; the switch assembly has a function of switching in response to the conversion between the forward insertion posture and the reverse insertion posture. An initial state and a trigger state, in which the first switchable pole piece is connected to the second positive pole through the switching switch assembly, and the second switchable pole piece is connected to the second negative pole through the switching switch assembly, wherein the first switchable pole piece is the second positive pole piece, and the second switchable pole piece is the second negative pole piece; in the trigger state, the second switchable pole piece is connected to the second positive pole through the switching switch assembly, and the first switchable pole piece is connected to the second negative pole through the switching switch assembly, wherein the second switchable pole piece is the second positive pole piece, and the first switchable pole piece is the second negative pole piece.

As a preferred embodiment, the switching switch assembly includes a triggered part, and the first device is provided with a triggering part matching the triggered part; in one of the forward insertion posture and the reverse insertion posture, the triggering part and the triggered part are in contact so that the switching switch assembly is in the triggered state; in the other of the forward insertion posture and the reverse insertion posture, the triggering part and the triggered part are staggered so that the switching switch assembly is in the initial state.

As a preferred embodiment, the triggered part is a trigger button, the trigger part includes a first local surface, and the first device is further provided with an avoidance part, and the avoidance part includes a second local surface; the first local surface and the second local surface are staggered along the vertical direction or the horizontal direction, and the second local surface is farther away from the trigger button along the plug-in direction than the first local surface, so that in the plugged state, the first local surface is opposite to the trigger button and contacts the trigger button, or the second local surface is opposite to the trigger button and forms a gap with the trigger button, so that the trigger button cannot be triggered.

As a preferred implementation, it is characterized in that the switching switch assembly is a double-pole double-throw switch.

As a preferred embodiment, a three-dimensional coordinate system is defined, the Z axis is collinear with the axis of the battery pack in the plugged state, the X axis is arranged in the horizontal direction, the Y axis is arranged in the vertical direction, and the planes where the X axis and the Y axis are located form four quadrants; the quadrant corresponding to the first positive electrode sheet and the quadrant corresponding to the second negative electrode sheet are arranged adjacent to each other; the second electrode sheet assembly includes a first optional positive electrode sheet and a second optional positive electrode sheet arranged in a diagonal quadrant and a first optional negative electrode sheet and a second optional negative electrode sheet arranged in the other two diagonal quadrants, the first optional positive electrode sheet and the second optional positive electrode sheet are both electrically connected to the second power-connected positive electrode, and the first The optional negative pole and the second optional negative pole are both electrically connected to the second power-connected negative pole; in the positive plug-in posture, the first optional positive pole sheet corresponds to the first positive pole sheet, and the first optional negative pole sheet corresponds to the first negative pole sheet, wherein the first optional positive pole sheet is the second positive pole sheet, and the first optional negative pole sheet is the second negative pole sheet; in the reverse plug-in posture, the second optional positive pole sheet corresponds to the first positive pole sheet, and the second optional negative pole sheet corresponds to the first negative pole sheet, wherein the second optional positive pole sheet is the second positive pole sheet, and the second optional negative pole sheet is the second negative pole sheet.

As a preferred embodiment, the proximal side of the host is plugged into the distal side of the battery pack; a pole piece bracket is provided on the proximal side of the host, and a slot is provided on the distal side of the battery pack; the first pole piece assembly is provided on the pole piece bracket, and the second pole piece assembly is provided in the slot; or the second pole piece assembly is provided on the pole piece bracket, and the first pole piece assembly is provided in the slot; when the host is plugged into the battery pack, the pole piece bracket extends into the slot to make the first pole piece assembly contact and conduct with the second pole piece assembly.

Compared with the prior art, the beneficial effects of this application are:

The electric surgical instrument provided in the present application includes a main unit, a battery pack and a convertible pole piece assembly. The main unit and the battery pack can be plugged in either forward or reverse direction. The convertible pole piece assembly is arranged between the main unit and the battery pack to ensure that the main unit and the battery pack can be electrically connected through the convertible pole piece assembly in both forward and reverse plug-in postures.

From the above, it can be seen that when using the electric surgical instrument, the user can either plug the main unit and the battery pack in the forward direction or in the reverse direction. There is no need to set up an anti-foolproof structure, nor is there any need to adjust the relative position between the battery pack and the main unit according to the anti-foolproof structure. Therefore, the anti-foolproof structure is omitted, and the assembly efficiency and convenience of the main unit and the battery pack are improved.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an electric surgical instrument provided in an embodiment of the present application;

FIG2A is a schematic diagram of the structure of a main unit of an electric surgical instrument provided in Embodiment 1 of the present application;

FIG. 2B is a partial enlarged view of point A in FIG. 2A

FIG3 is a first structural schematic diagram of a battery pack of an electric surgical instrument provided in Embodiment 1 of the present application;

FIG4 is a second structural schematic diagram of a battery pack of an electric surgical instrument provided in Embodiment 1 of the present application;

FIG5 is a schematic diagram of the electric surgical instrument provided in the first embodiment of the present application in a forward insertion posture;

FIG6 is a circuit diagram of the electric surgical instrument provided in the first embodiment of the present application in a forward insertion posture;

FIG7 is a schematic diagram of the electric surgical instrument provided in the first embodiment of the present application in a reverse insertion posture;

FIG8 is a circuit schematic diagram of the electric surgical instrument provided in the first embodiment of the present application in a reverse insertion posture;

FIG9A is a schematic structural diagram of a main unit of an electric surgical instrument provided in Embodiment 2 of the present application;

FIG9B is a partial enlarged view of point B in FIG9A ;

FIG10 is a schematic diagram of a first structure of a battery pack for an electric surgical instrument provided in Embodiment 2 of the present application;

FIG11 is a second structural schematic diagram of a battery pack for an electric surgical instrument provided in Embodiment 2 of the present application;

FIG12 is a schematic diagram of the electric surgical instrument provided in the second embodiment of the present application in a forward insertion posture;

FIG13 is a circuit diagram of the electric surgical instrument provided in the second embodiment of the present application in a forward insertion posture;

FIG14 is a schematic diagram of the electric surgical instrument provided in the second embodiment of the present application in a reverse insertion posture;

FIG15 is a circuit schematic diagram of the electric surgical instrument provided in the second embodiment of the present application in a reverse insertion posture;

FIG. 16 is a schematic diagram of the structure of the switch assembly of the electric surgical instrument provided in Embodiment 1 and Embodiment 2 of the present application;

FIG17 is a schematic structural diagram of a first switch of the switch assembly in FIG16 ;

FIG18 is a schematic structural diagram of a second switch of the switch assembly in FIG16 ;

FIG19 is a schematic diagram of the structure of a main unit of an electric surgical instrument provided in Embodiment 3 of the present application;

FIG20 is a first structural schematic diagram of a second pole piece assembly of an electric surgical instrument provided in Embodiment 3 of the present application;

FIG21 is a second structural schematic diagram of a second pole piece assembly of an electric surgical instrument provided in Embodiment 3 of the present application;

FIG22 is a first structural schematic diagram of a battery pack for an electric surgical instrument provided in Embodiment 3 of the present application;

FIG23 is a second structural schematic diagram of a battery pack for an electric surgical instrument provided in Embodiment 3 of the present application;

FIG24 is a schematic diagram of the electric surgical instrument provided in the third embodiment of the present application in a forward insertion posture;

FIG25 is a schematic diagram of the electric surgical instrument provided in the third embodiment of the present application in a reverse insertion posture;

FIG26 is a schematic diagram of the structure of an electric surgical instrument provided in Embodiment 4 of the present application;

FIG27 is a first structural schematic diagram of a battery pack for an electric surgical instrument provided in Embodiment 4 of the present application;

FIG28 is a second structural schematic diagram of a battery pack for an electric surgical instrument provided in Embodiment 4 of the present application;

FIG29 is a schematic diagram of the electric surgical instrument provided in the fourth embodiment of the present application in a forward insertion posture;

Figure 30 is a schematic diagram of the state of the electric surgical instrument provided in Example 4 of the present application in the reverse insertion posture.

Reference numerals:

1-electric surgical instrument; 10-host; 100-body; 1000-cover plate; 1001-first pole piece bracket; 1002-second pole piece bracket; 1003-guide block; 101-handle; 102-body switch; 103-casing; 104-jaw; 105-positive pole for power connection; 106-negative pole for power connection; 107-first circuit board; 11-battery pack; 110-front cover; 111-back cover; 112-first slot; 113-second slot; 1140-battery cell; 1141-nickel sheet; 1142-positive pole piece for battery cell output; 1143-negative pole piece for battery cell output; 116-positive pole for power supply connection; 117-negative pole for power supply connection; 118-guide groove; 12-first pole piece assembly; 120-first positive pole piece; 121-first negative electrode; 13-second electrode assembly; 130-first switchable electrode; 131-second switchable electrode; 132-switching switch assembly; 1320-first switch; 1321-first trigger button; 1322-first common pin; 1323-first normally open pin; 1324-first normally closed pin; 1325-first single pole; 1326-second switch; 1327-second trigger button; 1328-second common pin; 1329-second normally open pin; 1330-second normally closed pin; 1331-second single pole; 133-second circuit board; 134-first optional positive electrode; 135-first optional negative electrode; 136-second optional positive electrode; 137-second optional negative electrode; 14-avoidance groove.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

It should be understood that the terms "proximal" and "distal" used herein are relative to the clinician who manipulates the handle of the stapler. The term "proximal" refers to the part close to the clinician, and the term "distal" refers to the part away from the clinician.

In the present invention, unless otherwise clearly stipulated and limited, the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

In the present invention, unless otherwise clearly specified and limited, the terms such as "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movably connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements such as abutment. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that when there are qualifiers before "connected" and "connection", they have the meaning defined by the corresponding qualifiers, and only exclude situations that obviously need to be excluded, and do not exclude other possible situations. For example, "detachably connected" refers to a detachable connection, and does not include integration, but movable connection, etc. are not excluded.

1 to 30 , an embodiment of the present application provides an electric surgical instrument, specifically an electric stapler 1. The electric stapler 1 includes a main unit 10, a battery pack 11, and a convertible pole piece assembly.

Hereinafter, the above components of the electric stapler 1 will be described in detail.

The main unit 10 is a component assembled by combining the main functional components of the electric stapler 1. Specifically, the main unit 10 includes a handle 101, a sleeve 103 and a jaw 104 connected in sequence. The housing of the handle 101 is provided with an electric module and a transmission mechanism, and the housing of the handle 101 can be held by an operator. The electric module at least includes a motor, and the battery pack 11 provides electric energy to the motor. The motor works when it obtains electric energy and outputs electric power. The transmission mechanism is connected to the motor and works when it obtains the electric power output by the motor. The sleeve 103 includes at least other parts of the transmission mechanism except the transmission mechanism accommodated by the housing of the handle 101 in this embodiment. The jaw 104 can be selectively switched between an open state and a closed state, thereby clamping or loosening the tissue. A staple cartridge is detachably provided in the jaw 104, and the staple cartridge is provided with a slot for the movement of the cutting knife assembly. The cutting knife assembly can cut the tissue during the movement toward the distal end in the slot, and push the staples contained in the staple cartridge assembly out to staple the tissue.

Thus, the motor first drives the jaws to close and clamp the tissue through the transmission mechanism, then drives the cutting knife assembly forward through the transmission mechanism to cut and staple the tissue, then drives the cutting knife assembly backward through the transmission mechanism, and finally drives the jaw assembly to open and release the tissue through the transmission mechanism, thereby realizing the cutting and stapler functions. The specific structures of the transmission mechanism, the jaws 104, the sleeve 103, and the staple cartridge are prior art and will not be described in detail here.

The power module has a power-supply negative electrode 106 and a power-supply positive electrode 105, so that the power module draws electricity through the power-supply negative electrode 106 and the power-supply positive electrode 105, and then drives the stapler through the power module. As shown in FIG1 , the battery pack 11 and the host 10 are detachably plugged, so that the two can be connected to form an integral electric stapler 1 for use, and the two can be separated into separate parts to facilitate replacement or charging of the battery pack 11. Among them, the battery pack 11 includes a battery pack housing and a power supply module, and the power supply module has a power supply negative electrode 117 and a power supply positive electrode 116, so that the power supply module supplies power to the outside through the power supply positive electrode 116 and the power supply negative electrode 117, and then provides electrical energy for the operation of the power module.

Specifically, the power supply module can be formed by a single large-capacity battery, the positive pole of the entire battery is the positive power supply electrode 116 of the power supply module, and the negative pole of the entire battery is the negative power supply electrode 117 of the power supply module.

Alternatively, referring to FIG. 4 , FIG. 11 , FIG. 23 and FIG. 28 , the power supply module includes a plurality of battery cells 1140 connected in series in sequence through a conductive metal sheet, and the conductive metal sheet may be, for example, a nickel sheet 1141. Among them, the two battery cells 1140 located at both ends of all the battery cells 1140 are respectively the first battery cell 1140 and the second battery cell 1140, and the positive electrode of the first battery cell 1140 that is not electrically connected to other battery cells 1140 serves as the positive power supply electrode 116 of the power supply module, and the negative electrode of the second battery cell 1140 that is not electrically connected to other battery cells 1140 serves as the negative power supply electrode 117. Furthermore, the plurality of battery cells 1140 may be arranged in an array.

In order to electrically connect the power supply module of the battery pack 11 with the power module of the host 10 when the battery pack 11 is plugged in with the host 10, especially when the battery pack 11 and the host 10 are in the forward plug-in posture and the reverse plug-in posture, it can be ensured that the power supply module and the power module form a correct electrical path so that the two can be successfully electrically connected, the convertible pole piece assembly is configured to include a first pole piece assembly 12 and a second pole piece assembly 13. Among them, the "forward plug-in" and "reverse plug-in" referred to are relative. When the host 10 is placed with the handle 101 downward, the battery pack 11 can form a plug-in relationship with the host 10 in the two postures. To switch between the two postures of the battery pack 11, the battery pack 11 needs to be rotated 180°, wherein the plug-in formed by the battery pack 11 with the host 10 in the above two postures is "forward plug-in" and "reverse plug-in" respectively. For example, if the battery pack 11 is provided with positive and negative markings, the positive and negative markings may be patterns or texts that can clearly distinguish between the positive and negative. After being plugged in, if the positive and negative markings are placed in the positive direction, the host 10 and the battery pack 11 are plugged in the positive direction; if the positive and negative markings are placed in the negative direction, the host 10 and the battery pack 11 are plugged in the reverse direction.

One of the first pole piece assembly 12 and the second pole piece assembly 13 is arranged on the host 10, and the other is arranged on the battery pack 11, wherein the one of the host 10 and the battery pack 11 provided with the first pole piece assembly 12 is a first device, and the connection electrode of the first device includes a first positive connection electrode and a first negative connection electrode, and the one of the host 10 and the battery pack 11 provided with the second pole piece assembly 13 is a second device, and the connection electrode of the second device includes a second positive connection electrode and a second negative connection electrode.

That is to say, in one case, if the first pole piece assembly 12 is provided in the host 10 and the second pole piece assembly 13 is provided in the battery pack 11, then the host 10 is the first device and the battery pack 11 is the second device. Alternatively, in another case, if the first pole piece assembly 12 is provided in the battery pack 11 and the second pole piece assembly 13 is provided in the host 10, then the battery pack 11 is the first device and the host 10 is the second device. The first electrode assembly 12 includes a first positive electrode sheet 120 and a first negative electrode sheet 121. The second electrode assembly 13 has a second positive electrode sheet corresponding to the first positive electrode sheet 120 and a second negative electrode sheet corresponding to the first negative electrode sheet 121 in both the forward insertion posture and the reverse insertion posture. The so-called "the first positive electrode sheet 120 corresponds to the second positive electrode sheet" means that the first positive electrode sheet 120 and the second positive electrode sheet are aligned along the plug-in direction of the battery pack 11 and the host 10 to ensure that the first positive electrode sheet 120 and the second positive electrode sheet can contact each other after plugging. At the same time, the so-called "the first negative electrode sheet 121 corresponds to the second negative electrode sheet" means that the first negative electrode sheet 121 and the second negative electrode sheet are aligned along the plug-in direction of the battery pack 11 and the host 10 to ensure that the first negative electrode sheet 121 and the second negative electrode sheet can contact each other after plugging.

Among them, in the two plug-in postures, the second positive electrode provided by the second electrode assembly 13 can be served by two electrodes that are respectively connected to the second positive electrode, or can also be served by two electrodes that can be connected to the second positive electrode. Similarly, the second negative electrode provided in the two plug-in postures can be served by two electrodes that are respectively connected to the second negative electrode, or can also be served by two electrodes that can be connected to the second negative electrode. It is worth emphasizing that the setting positions and on-off control of all electrodes that serve as the second positive electrode and the second negative electrode need to be set accordingly according to the setting positions of the first positive electrode 120 and the second positive electrode.

In other words, when the first electrode assembly 12 is disposed on the host 10 and the second electrode assembly 13 is disposed on the battery pack 11, the positive electrode 105 for power consumption is the first positive electrode for power consumption, the negative electrode 106 for power consumption is the first negative electrode for power consumption, the positive electrode 116 for power supply is the second positive electrode for power supply, and the negative electrode 117 for power supply is the second negative electrode for power supply. The first positive electrode sheet 120 of the first electrode assembly 12 is always connected to the positive electrode 105 for power consumption, the first negative electrode sheet 121 of the first electrode assembly 12 is always connected to the negative electrode 106 for power consumption, and the second electrode assembly 13 has a second positive electrode sheet and a second negative electrode sheet in both the forward insertion posture and the reverse insertion posture, and ensures that the second positive electrode sheet is electrically connected to the positive electrode 116 for power supply, and the second negative electrode sheet is electrically connected to the negative electrode 117 for power supply.

Alternatively, when the first electrode assembly 12 is disposed in the battery pack 11 and the second electrode assembly 13 is disposed in the host 10, the positive electrode 116 for power supply is the first positive electrode, the negative electrode 117 for power supply is the first negative electrode, the positive electrode 105 for power consumption is the second positive electrode, and the negative electrode 106 for power consumption is the second negative electrode. The first positive electrode sheet 120 of the first electrode assembly 12 is always connected to the positive electrode 116 for power supply, the first negative electrode sheet 121 of the first electrode assembly 12 is always connected to the negative electrode 117 for power supply, and the second electrode assembly 13 has a second positive electrode sheet and a second negative electrode sheet in both the forward insertion posture and the reverse insertion posture, and ensures that the second positive electrode sheet is electrically connected to the positive electrode 105 for power consumption, and the second negative electrode sheet is electrically connected to the negative electrode 106 for power consumption.

In an optional solution of the present embodiment, the proximal side of the host 10 is plugged into the distal side of the battery pack 11. The second positive electrode sheet and the second negative electrode sheet are realized by the first switchable electrode sheet and the second switchable electrode sheet, and the connection between the first switchable electrode sheet and the electrode sheet and the connection between the second switchable electrode sheet and the electrode sheet can be switched with each other. For example: in the forward plug-in posture, the first switchable electrode sheet is connected to the second power-connected positive electrode, serving as the second positive electrode sheet, and the second switchable electrode sheet is connected to the second power-connected negative electrode, serving as the second negative electrode sheet; in the reverse plug-in posture, the first switchable electrode sheet is connected to the second power-connected negative electrode, serving as the second negative electrode sheet, and the second switchable electrode sheet is connected to the second power-connected positive electrode, serving as the second positive electrode sheet.

Specifically, a pole piece bracket is provided on the proximal side of the host 10, and the first pole piece assembly 12 or the second pole piece assembly 13 is provided on the pole piece bracket, so that the first positive pole piece 120 and the first negative pole piece 121 included in the first pole piece assembly 12 are supported and fixed by the pole piece bracket, or the first switchable pole piece 130 and the second switchable pole piece 131 of the second pole piece assembly 13 are supported and fixed by the pole piece bracket. Accordingly, the number of pole piece brackets is determined according to the number and installation position of the pole pieces included in the first pole piece assembly 12, or according to the number and installation position of the pole pieces included in the second pole piece assembly 13. A slot is provided on the distal side of the battery pack 11, and the second pole piece assembly 13 or the first pole piece assembly 12 is provided in the slot.

When the host 10 is plugged into the battery pack 11 , the pole piece bracket extends into the slot so that the first pole piece assembly 12 is in contact with the second pole piece assembly 13 .

It is worth emphasizing that the reason why a pole piece bracket is arranged on the proximal side of the main unit 10 and a slot is arranged on the distal side of the battery pack 11 is that in order to drive the electric stapler 1, a relatively complex transmission structure needs to be arranged inside the body 100. The transmission structure requires the body 100 to provide sufficient movement travel space along its own length direction. Therefore, a pole piece bracket is arranged on the proximal side of the main unit 10, and the space arranged in the pole piece bracket along the length direction serves as a part of the movement travel space of the transmission structure. After the battery pack 11 is installed in the main unit 10, the pole piece bracket extends into the slot of the battery pack 11, so that at least a part of the movement travel space of the transmission structure overlaps with the battery pack in the length direction, thereby effectively reducing the total length of the main unit 10. Moreover, by arranging a slot on the battery pack 11, the protruding size of the pole piece bracket relative to the main unit 10 can be hidden inside the battery pack 11, which is conducive to the miniaturization of the electric stapler 1.

It is understandable that, whether in the forward insertion posture or the reverse insertion posture, the pole piece bracket and the slot need to be aligned along the insertion direction of the host 10 and the battery pack 11 to ensure that the pole piece bracket can be inserted into the slot.

A three-dimensional coordinate system is defined, where the Z axis is collinear with the axis of the battery pack in the plugged-in state, the X axis is set in the horizontal direction, the Y axis is set in the vertical direction, and the planes where the X axis and the Y axis are located form four quadrants, as shown in Figures 5, 7, 12, 14, 24, 25, 29 and 30.

In an optional solution of this embodiment, as an implementation solution of the convertible pole piece assembly, the second pole piece assembly 13 includes two switchable pole pieces and a switching switch assembly 132, and the two switchable pole pieces are respectively a first switchable pole piece 130 and a second switchable pole piece 131.

The first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged on the first device corresponding to two diagonally arranged quadrants of the docking surface. It can be understood that, for the coordinate system of the docking surface, the first positive electrode sheet 120 is arranged corresponding to one of the first quadrant and the third quadrant, and the first negative electrode sheet 121 is arranged corresponding to the other of the first quadrant and the third quadrant; or, the first positive electrode sheet 120 is arranged corresponding to one of the second quadrant and the fourth quadrant, and the first negative electrode sheet 121 is arranged corresponding to the other of the second quadrant and the fourth quadrant.

The two switchable pole pieces are respectively arranged on the second device in the same quadrants as the first positive pole piece 120 and the first negative pole piece 121. In other words, when the first positive pole piece 120 and the first negative pole piece 121 correspond to the first quadrant and the third quadrant, the first switchable pole piece 130 is arranged in correspondence with one of the first quadrant and the third quadrant, and the second switchable pole piece 131 is arranged in correspondence with the other of the first quadrant and the third quadrant. Alternatively, when the first positive pole piece 120 and the first negative pole piece 121 correspond to the second quadrant and the fourth quadrant, the first switchable pole piece 130 is arranged in correspondence with one of the second quadrant and the fourth quadrant, and the second switchable pole piece 131 is arranged in correspondence with the other of the second quadrant and the fourth quadrant.

It is precisely because the quadrants corresponding to the first positive electrode sheet 120 and the first negative electrode sheet 121 are diagonally arranged, and the quadrants corresponding to the first switchable electrode sheet 130 and the second switchable electrode sheet 131 are the same as the first positive electrode sheet 120 and the first negative electrode sheet 121, so whether in the forward insertion posture or the reverse insertion posture, the first positive electrode sheet 120 and the first negative electrode sheet 121 can respectively correspond to one of the two switchable electrode sheets, ensuring that after insertion, the two switchable electrode sheets are respectively in contact and conductive with the first positive electrode sheet 120 and the first negative electrode sheet 121, so that the first positive electrode connected is electrically connected to the second positive electrode connected through the first positive electrode sheet 120 and a switchable electrode sheet, and the first negative electrode connected is electrically connected to the second negative electrode connected through the first negative electrode sheet 121 and the other switchable electrode sheet.

The switching switch component 132 is arranged on the second device, and the switching switch component 132 has an initial state and a trigger state. In the initial state and the trigger state, in the initial state, the first switchable pole piece 130 is connected to the second positive power pole through the switching switch component 132, and the second switchable pole piece 131 is connected to the second negative power pole through the switching switch component 132. In the trigger state, the second switchable pole piece 131 is connected to the second positive power pole through the switching switch component 132, and the first switchable pole piece 130 is connected to the second negative power pole through the switching switch component 132.

To illustrate this with an example, if in the forward plugging posture, the first switchable pole piece 130 corresponds to the second quadrant and is electrically connected to the second positive power connection pole, and the second switchable pole piece 131 corresponds to the fourth quadrant and is electrically connected to the second negative power connection pole, then in the reverse plugging posture, the second switchable pole piece 131 corresponds to the second quadrant and is electrically connected to the second positive power connection pole, and the first switchable pole piece 130 corresponds to the fourth quadrant and is electrically connected to the second negative power connection pole. It can be seen that the first switchable pole piece 130 in the forward plugging posture and the second switchable pole piece 131 in the reverse plugging posture both correspond to the second quadrant and are electrically connected to the second positive power connection pole. Similarly, the second switchable pole piece 131 in the forward plugging posture and the first switchable pole piece 130 in the reverse plugging posture both correspond to the fourth quadrant and are electrically connected to the second negative power connection pole.

Optionally, in the forward insertion posture, the switching switch assembly 132 is in an initial state, and in the reverse insertion posture, the switching switch assembly 132 is in a triggered state; or, in the forward insertion posture, the switching switch assembly 132 is in a triggered state, and in the reverse insertion posture, the switching switch assembly 132 is in an initial state.

Thereby, the initial state and trigger state of the switching switch assembly 132 are respectively associated with the forward insertion posture and the reverse insertion posture, thereby ensuring that the switchable pole pieces located in the same quadrant can be electrically connected to the connecting electrode of the second device with the same polarity regardless of whether in the forward insertion posture or the reverse insertion posture, and the polarities of the two switchable pole pieces are converted by the switching switch assembly 132.

In this embodiment, in order to realize state switching and control of the switching switch component 132 in the forward insertion posture and the reverse insertion posture, the switching switch component 132 includes a triggered part, and the first device is provided with a triggering part matching the triggered part.

In this embodiment, as an implementation scheme of a switching switch component 132, the triggered part is a trigger button.

The triggering portion includes a first partial surface of the first device, the first device is provided with an avoidance portion, and the avoidance portion includes a second partial surface of the first device.

The second local surface is farther away from the trigger button along the plugging direction than the first local surface. For example, the surface of the first device facing the second device is roughly a plane, the first local surface can be flush with the plane, and the second local surface can be recessed relative to the plane in a direction away from the second device, or the second local surface can be flush with the plane, and the first local surface can be raised relative to the plane in a direction toward the second device.

Therefore, when the first local surface is opposite to the trigger button, it can contact and press the trigger button, so that the switching switch component 132 is switched to the trigger state; when the second local surface is opposite to the trigger button, a gap can be formed with the trigger button, and the trigger button will not be pressed by the second local surface, thereby switching the switching switch component 132 to the initial state.

Therefore, the first local surface is configured to be set opposite to the trigger button in the forward insertion posture, so that the switching switch component 132 can be switched to the trigger state in the forward insertion posture. At the same time, the second local surface is configured to be set opposite to the trigger button in the reverse insertion state, so that the switching switch component 132 can be switched to the initial state in the reverse insertion posture (this situation is not shown in the figure).

Alternatively, referring to Figures 2A to 5, 7, 9A to 12 and 14, the second local surface is configured to be arranged opposite to the trigger button in the forward insertion posture, so that the switching switch component 132 is switched to the initial state in the forward insertion posture. At the same time, the first local surface is configured to be arranged opposite to the trigger button in the reverse insertion posture, so that the switching switch component 132 is switched to the triggered state in the reverse insertion posture.

In this embodiment, the switching switch assembly 132 can be a double-pole double-throw switch. Specifically, the double-pole double-throw switch can be an integrated double-pole double-throw switch, or the double-pole double-throw switch is composed of two single-pole double-throw switches. In other words, as long as it is a comparable structure that can achieve the basic function of a double-pole double-throw switch, it can be covered within the scope of the double-pole double-throw switch defined in this article.

For a clearer description, the implementation scheme of the convertible pole piece assembly is illustrated by way of example in the following embodiment 1 and embodiment 2.

In an optional solution of this embodiment, as another implementation solution of the convertible electrode assembly, the first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged on the first device corresponding to two adjacent quadrants of the docking surface. Specifically, the first positive electrode sheet 120 is set in the first quadrant, and the first negative electrode sheet 121 is set in the second quadrant, or the first negative electrode sheet 121 is set in the first quadrant, and the first positive electrode sheet 120 is set in the second quadrant, or the first positive electrode sheet 120 is set in the second quadrant, and the first negative electrode sheet 121 is set in the third quadrant, or the first negative electrode sheet 121 is set in the second quadrant, and the first positive electrode sheet 120 is set in the third quadrant, or the first positive electrode sheet 120 is set in the third quadrant, and the first negative electrode sheet 121 is set in the fourth quadrant, or the first positive electrode sheet 120 is set in the fourth quadrant, and the first negative electrode sheet 121 is set in the third quadrant, or the first positive electrode sheet 120 is set in the fourth quadrant, and the first negative electrode sheet 121 is set in the first quadrant, or the first positive electrode sheet 120 is set in the first quadrant, and the first negative electrode sheet 121 is set in the fourth quadrant.

The second positive electrode sheet is realized by a first optional positive electrode sheet and a second optional positive electrode sheet, both of which are connected to the second power connection positive electrode and can be selectively connected to the power supply circuit, and the second negative electrode sheet is realized by a first optional negative electrode sheet and a second optional negative electrode sheet, both of which are connected to the second power connection negative electrode and can be selectively connected to the power supply circuit. For example: in the positive plug posture, the first optional positive electrode sheet is connected to the power supply circuit as the second positive electrode sheet, and the first optional negative electrode sheet is connected to the power supply circuit as the second negative electrode sheet; in the reverse plug posture, the second optional positive electrode sheet is connected to the power supply circuit as the second positive electrode sheet, and the second optional negative electrode sheet is connected to the power supply circuit as the second negative electrode sheet. In addition, the first optional positive electrode sheet and the second optional positive electrode sheet are distributed in diagonal quadrants, and the first optional negative electrode sheet and the second optional negative electrode sheet are distributed in diagonal quadrants.

Specifically, in the forward insertion posture, the first positive electrode sheet 120 is set in any of the four quadrants of the docking surface, and the quadrant of the docking surface corresponding to the first negative electrode sheet 121 is located in the next quadrant of the quadrant corresponding to the first positive electrode sheet 120 in the clockwise direction or counterclockwise direction.

In the forward plugged posture, the first optional positive electrode sheet 134 corresponds to the first positive electrode sheet 120, and correspondingly, the first optional negative electrode sheet 135 corresponds to the first negative electrode sheet 121, so that the first positive electrode sheet 120 is electrically connected to the second power-connected positive electrode through the first optional positive electrode sheet 134, and the first negative electrode sheet 121 is electrically connected to the second power-connected negative electrode through the first optional negative electrode sheet 135.

In the reverse insertion posture, the second optional positive plate 136 corresponds to the first positive plate 120, and correspondingly, the second optional negative plate 137 corresponds to the first negative plate 121, so that the first positive plate 120 is electrically connected to the second power-connected positive pole through the second optional positive plate 136, and the first negative plate 121 is electrically connected to the second power-connected negative pole through the second optional negative plate 137.

For a clearer description, the implementation scheme of the switchable pole piece assembly is illustrated by way of examples in the following third and fourth embodiments.

Embodiment 1

As shown in Figures 2A to 8 and Figures 16 to 18, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are arranged on the battery pack 11, and the battery pack 11 is the first device. The second electrode sheet assembly 13 is arranged on the host 10, and the host 10 is the second device. The second electrode sheet assembly 13 includes a first switchable electrode sheet 130, a second switchable electrode sheet 131 and a switching switch assembly 132.

The battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by buckling the front cover 110 and the rear cover 111 forms an installation cavity.

The power supply module is arranged in the installation cavity, and the power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. In Figure 4, the positive electrode of the battery cell 1140 located in the lower right corner forms a power supply positive electrode 116, that is, the first power connection positive electrode, and the negative electrode of the battery cell 1140 located in the upper right corner forms a power supply negative electrode 117, that is, the first power connection negative electrode.

As shown in FIG. 3 and FIG. 4 , the front cover 110 is provided with a first slot 112, a guide slot 118, a second slot 113 and an avoidance slot 14. The avoidance slot 14 serves as an avoidance portion, and a side plane on the front cover 110 opposite to the avoidance slot serves as a trigger portion. In the normal insertion posture, the first slot 112 and the second slot 113 are respectively arranged corresponding to the second quadrant and the fourth quadrant of the docking surface, the guide slot 118 is located between the first slot 112 and the second slot 113, and the avoidance slot 14 is arranged below the first slot 112 and the second slot 113.

One end of the first positive electrode sheet 120 is electrically connected to the positive electrode of an end battery cell 1140 (the power supply connected positive electrode 116), and the other end of the first positive electrode sheet 120 extends into the first slot 112, one end of the first negative electrode sheet 121 is electrically connected to the negative electrode of the other end battery cell 1140 (the power supply connected negative electrode 117), and the other end of the first negative electrode sheet 121 extends into the second slot 113.

As shown in FIG. 2B , a cover plate 1000 is provided on the proximal side of the host 10, and the cover plate 1000 is provided with a first pole piece bracket 1001, a second pole piece bracket 1002, and a guide block 1003. The first pole piece bracket 1001 and the second pole piece bracket 1002 are arranged at intervals along the x-axis direction of the docking surface, the guide block 1003 is located between the first pole piece bracket 1001 and the second pole piece bracket 1002, the switch assembly 132 is embedded in the cover plate 1000 and is located below the guide block 1003, and the trigger button of the switch assembly 132 protrudes from the cover plate 1000.

The first switchable pole piece 130 is arranged on the upper surface of the first pole piece bracket 1001, and the second switchable pole piece 131 is arranged on the lower surface of the second pole piece bracket 1002, so that the first switchable pole piece 130 and the second switchable pole piece 131 are arranged corresponding to the second quadrant and the fourth quadrant of the docking surface respectively.

As shown in Fig. 6, Fig. 8 and Fig. 16 to Fig. 18, the switch assembly 132 includes a first switch 1320 and a second switch 1326. The first switch 1320 includes a first single pole 1325, a first trigger button 1321, a first common pin 1322, a first normally open pin 1323 and a first normally closed pin 1324; the second switch 1326 includes a second single pole 1331, a second trigger button 1327, a second common pin 1328, a second normally open pin 1329 and a second normally closed pin 1330.

The first normally closed pin 1324 and the second normally open pin 1329 are both electrically connected to the first switchable pole piece 130 , and the first normally open pin 1323 and the second normally closed pin 1330 are both electrically connected to the second switchable pole piece 131 .

As shown in FIG5 and FIG6, when the host 10 and the battery pack 11 are plugged in a normal insertion posture, the avoidance groove 14 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132, and the switch assembly 132 is switched to the initial state. In the initial state, the first single pole 1325 electrically connects the first common pin 1322 with the first normally closed pin 1324, and the second single pole 1331 electrically connects the second common pin 1328 with the second normally closed pin 1330.

Thus, the positive electrode 105 connected to the power supply is electrically connected to the positive electrode 116 through the first common pin 1322, the first single pole 1325, the first normally closed pin 1324, the first switchable pole piece 130 and the first positive pole piece 120. At the same time, the negative electrode 106 connected to the power supply is electrically connected to the negative electrode 117 through the second common pin 1328, the second single pole 1331, the second normally closed pin 1330, the second switchable pole piece 131 and the first negative pole piece 121.

As shown in FIGS. 7 and 8 , when the host 10 and the battery pack 11 are plugged in reverse, the upper plane of the front cover 110 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132 and is pressed, and the switch assembly 132 is switched to the trigger state. In the trigger state, the first single pole 1325 electrically connects the first common pin 1322 with the first normally open pin 1323, and the second single pole 1331 electrically connects the second common pin 1328 with the second normally open pin 1329.

The positive electrode 105 connected to the power supply is electrically connected to the positive electrode 116 through the first common pin 1322, the first single pole 1325, the first normally open pin 1323, the second switchable pole piece 131 and the first positive pole piece 120. At the same time, the negative electrode 106 connected to the power supply is electrically connected to the negative electrode 117 through the second common pin 1328, the second single pole 1331, the second normally open pin 1329, the first switchable pole piece 130 and the first negative pole piece 121.

Embodiment 2

As shown in Figures 9A to 18, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are arranged on the host 10, and the host 10 is the first device. The second electrode sheet assembly 13 is arranged on the battery pack 11, and the battery pack 11 is the second device. The second electrode sheet assembly 13 includes a first switchable electrode sheet 130, a second switchable electrode sheet 131 and a switching switch assembly 132.

As shown in FIG9B , a cover plate 1000 is provided on the near side of the host 10, and a avoidance groove 14, a first pole piece bracket 1001, a second pole piece bracket 1002 and a guide block 1003 are provided on the cover plate 1000. The first pole piece bracket 1001 and the second pole piece bracket 1002 are arranged at intervals along the x-axis direction of the docking surface, the guide block 1003 is located between the first pole piece bracket 1001 and the second pole piece bracket 1002, and the avoidance groove 14 is arranged below the guide block 1003. Among them, the avoidance groove 14 serves as an avoidance portion, and a side plane on the cover plate 1000 opposite to the avoidance groove serves as a trigger portion.

The first positive electrode sheet 120 is arranged on the upper surface of the first electrode sheet support 1001, and the first negative electrode sheet 121 is arranged on the lower surface of the second electrode sheet support 1002, so that the first positive electrode sheet 120 and the first negative electrode sheet 121 correspond to the second quadrant and the fourth quadrant of the docking surface respectively.

As shown in Figures 10 and 11, the battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the buckled front cover 110 and the rear cover 111 forms an installation cavity. The power supply module is arranged in the installation cavity. The power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. In Figure 11, the positive electrode of the battery cell 1140 in the lower right corner forms a power supply positive electrode 116, which is the second power connection positive electrode, and the negative electrode of the battery cell 1140 in the upper right corner forms a power supply negative electrode 117, which is the second power connection negative electrode.

In order to facilitate the conversion of the connection relationship between the power supply module and the first switching electrode and the second switching electrode respectively, the power supply module also includes a second circuit board 133, a battery cell output positive electrode sheet 1142 and a battery cell output negative electrode sheet 1143, the battery cell output positive electrode sheet 1142 is electrically connected to the positive electrode of one end battery cell 1140 (the power supply connected positive electrode 116), and the battery cell output negative electrode sheet 1143 is electrically connected to the negative electrode of the other end battery cell 1140 (the power supply connected negative electrode 117).

The front cover 110 is provided with a switching switch assembly 132, a first slot 112, a guide groove 118 and a second slot 113. In the normal insertion posture, the first slot 112 and the second slot 113 are respectively arranged corresponding to the second quadrant and the fourth quadrant of the docking surface, the guide groove 118 is located between the first slot 112 and the second slot 113, and the switching switch assembly 132 is arranged below the first slot 112 and the second slot 113.

One end of the first switchable pole piece 130 extends into the installation cavity, and the other end of the first switchable pole piece 130 extends into the first slot 112 . One end of the second switchable pole piece 131 extends into the installation cavity, and the other end of the second switchable pole piece 131 extends into the second slot 113 .

As shown in Figures 11, 13 and 15, the switch assembly 132 includes a first switch 1320 and a second switch 1326. The first switch 1320 includes a first single pole 1325, a first trigger button 1321, a first common pin 1322, a first normally open pin 1323 and a first normally closed pin 1324, and the first common pin 1322 is electrically connected to the first switchable pole piece 130. The second switch 1326 includes a second single pole 1331, a second trigger button 1327, a second common pin 1328, a second normally open pin 1329 and a second normally closed pin 1330, and the second common pin 1328 is electrically connected to the second switchable pole piece 131.

The first normally closed pin 1324 and the second normally open pin 1329 are both electrically connected to the battery cell output positive electrode sheet 1142 through the second circuit board 133 , and the first normally open pin 1323 and the second normally closed pin 1330 are both electrically connected to the battery cell output negative electrode sheet 1143 through the second circuit board 133 .

As shown in FIGS. 12 and 13 , when the host 10 and the battery pack 11 are plugged in a normal insertion posture, the avoidance groove 14 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132, and the switch assembly 132 is switched to the initial state. In the initial state, the first single-pole 1325 electrically connects the first common pin 1322 with the first normally closed pin 1324, and the second single-pole 1331 electrically connects the second common pin 1328 with the second normally closed pin 1330.

Thus, the positive power supply electrode 116 is electrically connected to the positive power supply electrode 105 through the cell output positive electrode sheet 1142, the first normally closed pin 1324, the first single pole 1325, the first common pin 1322, the first switchable pole sheet 130 and the first positive pole sheet 120. At the same time, the negative power supply electrode 117 is electrically connected to the negative power supply electrode 106 through the cell output negative pole sheet 1143, the second normally closed pin 1330, the second single pole 1331, the second common pin 1328, the second switchable pole sheet 131 and the first negative pole sheet 121.

As shown in FIGS. 14 and 15 , when the host 10 and the battery pack 11 are plugged in reverse, the upper plane of the cover 1000 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132 and is pressed, and the switch assembly 132 is switched to the trigger state. In the trigger state, the first single-pole 1325 electrically connects the first common pin 1322 with the first normally open pin 1323, and the second single-pole 1331 electrically connects the second common pin 1328 with the second normally open pin 1329.

Thus, the positive power supply electrode 116 is electrically connected to the positive power supply electrode 105 through the cell output positive electrode sheet 1142, the second normally open pin 1329, the second single pole 1331, the second common pin 1328, the second switchable pole sheet 131 and the first positive pole sheet 120. At the same time, the negative power supply electrode 117 is electrically connected to the negative power supply electrode 106 through the cell output negative pole sheet 1143, the first normally open pin 1323, the first single pole 1325, the first common pin 1322, the first switchable pole sheet 130 and the first negative pole sheet 121.

Embodiment 3

As shown in Figures 19 to 25, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are both arranged in the battery pack 11, and the battery pack 11 is the first device. The second electrode sheet assembly 13 is arranged in the host 10, and the host 10 is the second device. The second electrode sheet assembly 13 includes a first optional positive electrode sheet 134, a second optional positive electrode sheet 136, a first optional negative electrode sheet 135 and a second optional negative electrode sheet 137.

As shown in Figures 19 to 21, a cover plate 1000 is provided on the proximal side of the main unit 10, and a first pole piece bracket 1001, a second pole piece bracket 1002 and a guide block 1003 are provided on the cover plate 1000. The first pole piece bracket 1001 and the second pole piece bracket 1002 are spaced apart along the x-axis direction of the docking surface, and the guide block 1003 is located between the first pole piece bracket 1001 and the second pole piece bracket 1002.

The first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 are respectively arranged on the upper surface and the lower surface of the first electrode sheet bracket 1001, so that the first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 are respectively arranged corresponding to the second quadrant and the third quadrant of the docking surface, and the second optional negative electrode sheet 137 and the second optional positive electrode sheet 136 are respectively arranged on the upper surface and the lower surface of the second electrode sheet bracket 1002, so that the second optional negative electrode sheet 137 and the second optional positive electrode sheet 136 are respectively arranged corresponding to the first quadrant and the fourth quadrant of the docking surface.

Among them, the first optional positive electrode sheet 134 and the second optional positive electrode sheet 136 can be electrically connected to the positive electrode 105 for power connection through a wire or a conductive sheet, respectively, or, as shown in Figures 20 and 21, the positive electrode 105 for power connection is integrated on the first circuit board 107, and the first optional positive electrode sheet 134 and the second optional positive electrode sheet 136 are both electrically connected to the positive electrode 105 for power connection on the first circuit board 107.

Similarly, the first optional negative electrode sheet 135 and the second optional negative electrode sheet 137 can be electrically connected to the negative electrode 106 for power connection through wires, or, as shown in Figures 20 and 21, the negative electrode 106 for power connection is integrated on the second circuit board 133, and the first optional negative electrode sheet 135 and the second optional negative electrode sheet 137 are both electrically connected to the negative electrode 106 for power connection on the second circuit board 133.

As shown in Figures 22 and 23, the battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the buckling of the front cover 110 and the rear cover 111 forms an installation cavity. The power supply module is arranged in the installation cavity. The power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. In Figure 23, the positive electrode of the battery cell 1140 located in the upper right corner forms a power supply positive electrode 116, that is, a first power connection positive electrode, and the negative electrode of the battery cell 1140 located in the lower right corner forms a power supply negative electrode 117, that is, a first power connection negative electrode.

The front cover 110 is provided with a first slot 112 , a guide slot 118 and a second slot 113 . The first slot 112 and the second slot 113 are sequentially arranged along the x direction of the mating surface, and the guide slot 118 is located between the first slot 112 and the second slot 113 .

One end of the first positive electrode sheet 120 extends into the installation cavity and is electrically connected to the power supply positive electrode 116, and one end of the first negative electrode sheet 121 extends into the installation cavity and is electrically connected to the power supply negative electrode 117; the other end of the first positive electrode sheet 120 and the other end of the first negative electrode sheet 121 are both arranged in the first slot 112, and are relatively spaced along the y direction of the docking surface, and the second slot 113 is vacant to accommodate optional positive electrode sheets and optional negative electrode sheets that do not participate in the electrical path in the plugged state.

Thus, in the forward insertion posture, the first positive electrode sheet 120 and the first negative electrode sheet 121 are located in the second quadrant and the third quadrant respectively, and in the reverse insertion posture, the first positive electrode sheet 120 and the first negative electrode sheet 121 are located in the fourth quadrant and the first quadrant respectively.

In view of this, as shown in FIG. 24 and FIG. 20, when the host 10 and the battery pack 11 are plugged in a positive plugging posture, the first pole piece bracket 1001, the first optional positive pole piece 134 and the first optional negative pole piece 135 are inserted into the first slot 112, so that the first positive pole piece 120 and the first optional positive pole piece 134 are in contact and conduction, and the first negative pole piece 121 and the first optional negative pole piece 135 are in contact and conduction, and then the positive pole 105 for electric connection is sequentially connected to the positive pole 116 for power supply through the first optional positive pole piece 134 and the first positive pole piece 120, and the negative pole 106 for electric connection is sequentially connected to the negative pole 117 for power supply through the first optional negative pole piece 135 and the first negative pole piece 121. At the same time, the second pole piece bracket 1002, the second optional positive pole piece 136 and the second optional negative pole piece 137 are inserted into the second slot 113 and are in an idle state, that is, they do not participate in the electrical path.

As shown in FIG. 25 and FIG. 20 , when the host 10 and the battery pack 11 are plugged in a reverse plugging posture, the second electrode holder 1002, the second optional positive electrode 136 and the second optional negative electrode 137 are inserted into the first slot 112, so that the first positive electrode 120 and the second optional positive electrode 136 are in contact and conduction corresponding to the fourth quadrant, and the first negative electrode 121 and the second optional negative electrode 137 are in contact and conduction corresponding to the first quadrant, and then the positive electrode 105 connected to the power supply positive electrode 116 is formed in an electrical connection relationship through the second optional positive electrode 136 and the first positive electrode 120, and the negative electrode 106 connected to the power supply negative electrode 117 is formed in an electrical connection relationship through the second optional negative electrode 137 and the first negative electrode 121. At the same time, the first electrode holder 1001, the first optional positive electrode 134 and the first optional negative electrode 135 are inserted into the second slot 113 and are in an idle state, that is, they do not participate in the electrical path.

Embodiment 4

As shown in Figures 26 to 30, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are both arranged on the host 10, and the second electrode sheet assembly 13 is arranged on the battery pack 11. The second electrode sheet assembly 13 includes a first optional positive electrode sheet 134, a second optional positive electrode sheet 136, a first optional negative electrode sheet 135 and a second optional negative electrode sheet 137.

As shown in FIG26 , a cover plate 1000 is provided on the proximal side of the host 10 , and a first pole piece support 1001 and a guide block 1003 are provided on the cover plate 1000 . The guide block 1003 is provided on the side of the first pole piece support 1001 along the x-axis direction of the mating surface.

The first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged on the upper surface and the lower surface of the first electrode sheet bracket 1001, so that the first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged corresponding to the second quadrant and the third quadrant of the docking surface, the first positive electrode sheet 120 is electrically connected to the positive electrode 105 for electrical connection, that is, it is electrically connected to the first positive electrode for electrical connection, and the first negative electrode sheet 121 is electrically connected to the negative electrode 106 for electrical connection, that is, it is electrically connected to the first negative electrode for electrical connection.

As shown in Figures 27 and 28, the battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the buckled front cover 110 and the rear cover 111 forms an installation cavity. The power supply module is arranged in the installation cavity. The power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. Among them, in Figure 28, the negative electrode of the battery cell 1140 located in the lower right corner is the power supply connected negative electrode 117, which is the second power connection negative electrode, and the positive electrode of the battery cell 1140 located in the upper right corner is the power supply connected positive electrode 116, which is the second power connection positive electrode.

The front cover 110 is provided with a first slot 112 , a guide slot 118 and a second slot 113 . The first slot 112 and the second slot 113 are sequentially arranged along the x direction of the mating surface, and the guide slot 118 is located between the first slot 112 and the second slot 113 .

One end of the first optional positive electrode sheet 134 extends into the installation cavity and is electrically connected to the power supply positive electrode 116, one end of the first optional negative electrode sheet 135 extends into the installation cavity and is electrically connected to the power supply negative electrode 117, and the other end of the first optional positive electrode sheet 134 and the other end of the first optional negative electrode sheet 135 are both arranged in the first slot 112, and are relatively spaced apart along the y direction of the docking surface.

One end of the second optional positive electrode sheet 136 extends into the installation cavity and is electrically connected to the power supply positive electrode 116, one end of the second optional negative electrode sheet 137 extends into the installation cavity and is electrically connected to the power supply negative electrode 117, and the other end of the second optional positive electrode sheet 136 and the other end of the second optional negative electrode sheet 137 are both arranged in the second slot 113, and are relatively spaced along the y direction of the docking surface.

In the forward insertion posture, the first optional positive plate 134 and the first optional negative plate 135 correspond to the second quadrant and the third quadrant respectively, and the second optional positive plate 136 and the second optional negative plate 137 correspond to the fourth quadrant and the first quadrant respectively; it can be understood that in the reverse insertion posture, the first optional positive plate 134 and the first optional negative plate 135 are located in the fourth quadrant and the first quadrant respectively, and the second optional positive plate 136 and the second optional negative plate 137 are located in the second quadrant and the third quadrant respectively.

As shown in Figure 29, when the host 10 and the battery pack 11 are plugged in a positive insertion posture, the first electrode bracket 1001, the first positive electrode plate 120 and the first negative electrode plate 121 are inserted into the first slot 112, so that in the first slot 112, the first positive electrode plate 120 and the first optional positive electrode plate 134 are in contact and conductive, and the first negative electrode plate 121 and the first optional negative electrode plate 135 are in contact and conductive.

Then, the positive electrode 105 connected to the power supply positive electrode 116 is electrically connected in sequence through the first positive electrode sheet 120 and the first optional positive electrode sheet 134, and the negative electrode 106 connected to the power supply negative electrode 117 is electrically connected in sequence through the first negative electrode sheet 121 and the first optional negative electrode sheet 135. At the same time, the second optional positive electrode sheet 136 and the second optional negative electrode sheet 137 in the second slot 113 are in an idle state, that is, they do not participate in the electrical path.

As shown in Figure 30, when the host 10 and the battery pack 11 are plugged in a reverse plug-in posture, the first electrode bracket 1001, the first positive electrode 120 and the first negative electrode 121 are inserted into the second slot 113, so that when observed from the perspective of the unchanged position of the host 10, in the second slot 113, the first positive electrode 120 and the second optional positive electrode 136 are in contact and conductive, and the first negative electrode 121 and the second optional negative electrode 137 are in contact and conductive.

Then, the positive electrode 105 connected to the power supply positive electrode 116 is electrically connected in sequence through the first positive electrode sheet 120 and the second optional positive electrode sheet 136, and the negative electrode 106 connected to the power supply negative electrode 117 is electrically connected in sequence through the first negative electrode sheet 121 and the second optional negative electrode sheet 137. At the same time, the first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 in the first slot 112 are in an idle state, that is, they do not participate in the electrical path.

The electric surgical instrument provided by the present application includes a main unit, a battery pack, and a convertible pole piece assembly. The main unit and the battery pack can be plugged in either forward or reverse directions. The convertible pole piece assembly is arranged between the main unit and the battery pack to ensure that the main unit and the battery pack can be electrically connected through the convertible pole piece assembly in both forward and reverse plugging postures. There is no need to set up a foolproof structure, nor is there any need to adjust the relative position between the battery pack and the main unit according to the foolproof structure, thus omitting the foolproof structure and improving the assembly efficiency and convenience of the main unit and the battery pack.

It should be noted that the above embodiments are described using an electric stapler as an example for electric surgical instruments, and the above embodiments can be applied to other surgical instruments with a battery pack.

It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims (8)

1. An electric surgical instrument, characterized in that it comprises a main unit, a battery pack and a convertible electrode assembly; the battery pack is detachably plugged into the main unit in a forward insertion posture or a reverse insertion posture; The convertible pole piece assembly includes a first pole piece assembly and a second pole piece assembly, one of the first pole piece assembly and the second pole piece assembly is arranged on the host, and the other is arranged on the battery pack; The first electrode sheet assembly includes a first positive electrode sheet and a first negative electrode sheet, and the second electrode sheet assembly has a second positive electrode sheet corresponding to the first positive electrode sheet and a second negative electrode sheet corresponding to the first negative electrode sheet in both the forward insertion posture and the reverse insertion posture, so that the first positive electrode sheet is in contact with the second positive electrode sheet and is conductive, and the first negative electrode sheet is in contact with the second negative electrode sheet and is conductive, so that the host and the battery pack are electrically connected. 2. The electric surgical instrument according to claim 1, characterized in that one of the host and the battery pack having the first pole piece assembly is a first device, and the electrodes of the first device include a first positive electrode and a first negative electrode; the first positive electrode sheet is electrically connected to the first positive electrode, and the first negative electrode sheet is electrically connected to the first negative electrode; one of the host and the battery pack having the second pole piece assembly is a second device, and the electrodes of the second device include a second positive electrode and a second negative electrode; In the forward insertion posture and the reverse insertion posture, the second positive electrode sheet is electrically connected to the second power-connected positive electrode, and the second negative electrode sheet is electrically connected to the second power-connected negative electrode. 3. The electric surgical instrument according to claim 2, wherein the second pole piece assembly comprises a first switchable pole piece, a second switchable pole piece and a switch assembly; Define a three-dimensional coordinate system, where the Z axis is collinear with the axis of the battery pack in the plugged state, the X axis is set in the horizontal direction, the Y axis is set in the vertical direction, and the planes where the X axis and the Y axis are located form four quadrants; The quadrant corresponding to the first positive electrode sheet and the quadrant corresponding to the first negative electrode sheet are arranged diagonally; the quadrant corresponding to the first switchable electrode sheet is the same as the quadrant corresponding to the first positive electrode sheet, and the quadrant corresponding to the second switchable electrode sheet is the same as the quadrant corresponding to the first negative electrode sheet; The switching switch assembly has an initial state and a triggering state that are switched in response to the conversion between the forward insertion posture and the reverse insertion posture. In the initial state, the first switchable pole piece is connected to the second positive power pole through the switching switch assembly, and the second switchable pole piece is connected to the second negative power pole through the switching switch assembly, wherein the first switchable pole piece is the second positive pole piece, and the second switchable pole piece is the second negative pole piece; in the triggering state, the second switchable pole piece is connected to the second positive power pole through the switching switch assembly, and the first switchable pole piece is connected to the second negative power pole through the switching switch assembly, wherein the second switchable pole piece is the second positive pole piece, and the first switchable pole piece is the second negative pole piece. 4. The electric surgical instrument according to claim 3, characterized in that the switch assembly comprises a triggered portion, and the first device is provided with a triggering portion matching the triggered portion; In one of the forward insertion posture and the reverse insertion posture, the trigger part and the triggered part are in contact so that the switching switch assembly is in the trigger state; in the other of the forward insertion posture and the reverse insertion posture, the trigger part and the triggered part are offset so that the switching switch assembly is in the initial state. 5. The electric surgical instrument according to claim 4, characterized in that the triggered portion is a trigger button, the trigger portion includes a first partial surface, the first device is further provided with an avoidance portion, and the avoidance portion includes a second partial surface; The first local surface and the second local surface are staggered along the vertical direction or the horizontal direction, and the second local surface is farther away from the trigger button than the first local surface along the plug-in direction, so that in the plug-in state, the first local surface is opposite to the trigger button and contacts the trigger button, or the second local surface is opposite to the trigger button and forms a gap with the trigger button, so that the trigger button cannot be triggered. 6. The electric surgical instrument according to claim 3, characterized in that the switching switch assembly is a double-pole double-throw switch. 7. The electric surgical instrument according to claim 2, characterized in that: Define a three-dimensional coordinate system, where the Z axis is collinear with the axis of the battery pack in the plugged state, the X axis is set in the horizontal direction, the Y axis is set in the vertical direction, and the planes where the X axis and the Y axis are located form four quadrants; The quadrant corresponding to the first positive electrode sheet and the quadrant corresponding to the second negative electrode sheet are arranged adjacent to each other; the second electrode sheet assembly includes a first optional positive electrode sheet and a second optional positive electrode sheet arranged in a diagonal quadrant and a first optional negative electrode sheet and a second optional negative electrode sheet arranged in another two diagonal quadrants, the first optional positive electrode sheet and the second optional positive electrode sheet are both electrically connected to the second electrically connected positive electrode, and the first optional negative electrode and the second optional negative electrode are both electrically connected to the second electrically connected negative electrode; In the forward insertion posture, the first optional positive electrode sheet corresponds to the first positive electrode sheet, and the first optional negative electrode sheet corresponds to the first negative electrode sheet, wherein the first optional positive electrode sheet is the second positive electrode sheet, and the first optional negative electrode sheet is the second negative electrode sheet; in the reverse insertion posture, the second optional positive electrode sheet corresponds to the first positive electrode sheet, and the second optional negative electrode sheet corresponds to the first negative electrode sheet, wherein the second optional positive electrode sheet is the second positive electrode sheet, and the second optional negative electrode sheet is the second negative electrode sheet. 8. The electric surgical instrument according to any one of claims 1 to 7, characterized in that the proximal side of the main unit is plugged into the distal side of the battery pack; A pole piece bracket is provided on the proximal side of the host, and a slot is provided on the distal side of the battery pack; the first pole piece assembly is provided on the pole piece bracket, and the second pole piece assembly is provided in the slot; or the second pole piece assembly is provided on the pole piece bracket, and the first pole piece assembly is provided in the slot; When the host is plugged into the battery pack, the pole piece bracket extends into the slot to make the first pole piece assembly contact and conduct with the second pole piece assembly.