CN116898511A - Anastomat - Google Patents

Abstract

The invention discloses a stapler, which includes: a main body; a nail-butting seat assembly, which is fixedly installed on the main body; and a nail box base, which is hingedly installed on the main body. The jaws are formed; the cutting knife component is movably installed in the main body along the axial direction of the main body; the locking component is movably installed on the main body or the base of the nail box and is located in the jaws, and the locking component includes a locking component fixedly installed on the main body or the base of the nail box. The fixed pin, the air-firing safety movably installed on the fixed pin, and the elastic member acting on the air-firing safety; in the first state, the elastic force acts on the air-firing safety, and the locking component is in contact with the cutting knife assembly; In the second state, external force acts on the air-firing safety, and the locking assembly and the cutting knife assembly are separated. The present invention can prevent the cutting knife assembly from advancing by firing the air-fired safety, preventing false triggering, preventing human tissue from being cut and unable to be sutured, and improving the safety of the stapler.

Description

stapler

Technical field

The invention belongs to the technical field of medical equipment, and specifically relates to a stapler that cannot be fired without staples.

Background technique

The stapler is usually divided into two parts: the main body and the staple box assembly. The main body of the device is an action actuator, which realizes operations such as clamping tissue, firing, cutting and anastomosis, and resetting; the nail box component is a loadable and disassembled unit that provides the staples required for anastomosis of tissue. When using an existing stapler for surgery, if the stapler is fired due to misoperation without loading the staple cartridge assembly or loading the used staple cartridge assembly, it will lead to an accident in which the tissue is cut but not sutured, causing The patient is bleeding profusely.

Therefore, in view of the above technical problems, it is necessary to provide a stapler that cannot be fired without staples.

Contents of the invention

In view of this, the object of the present invention is to provide a stapler that cannot be fired without staples.

In order to achieve the above object, the technical solution provided by an embodiment of the present invention is as follows:

A stapler, the stapler includes:

main body;

The nail base assembly is fixedly installed on the main body;

The base of the nail box is hingedly mounted on the main body, and a jaw is formed between the nail base assembly and the base of the nail box;

A cutting knife assembly is movably installed in the main body along the axial direction of the main body;

The locking assembly is movably installed on the main body or the base of the nail box and is located in the jaws. The locking assembly includes a fixing pin fixedly installed on the main body or the base of the nail box, and a locking pin movably installed on the fixing pin. The air-firing safety and the elastic member acting on the air-firing safety;

In the first state, elastic force acts on the air-firing safety, and the locking component is in contact with the cutting knife component;

In the second state, external force acts on the air-firing safety, and the locking component is separated from the cutting knife component.

In one embodiment, the stapler further includes:

The stapler also includes:

A nail box is detachably installed in the base of the nail box;

The slide block is slidably installed on the nail box along the length direction of the nail box;

In the first state, the slider is separated from the locking component;

In the second state, the slider is in contact with the locking component, and the slider exerts an external force on the locking component.

In one embodiment, the dry firing safety is rotatably mounted on the fixing pin.

In one embodiment, the dry firing safety includes a stopper, a force-receiving part, and a rotating part connecting the stopper and the force-receiving part, and the rotating part is rotationally mounted on the fixed pin; in the first In the second state, an elastic force acts on the force-receiving part, and the stopper part is in contact with the cutting knife assembly; in the second state, an external force acts on the force-receiving part, and the stopper part is in contact with the cutting knife assembly. Components are phase separated.

In one embodiment, the fixing pin is fixedly installed on the main body parallel to the axial direction of the main body; the first end of the elastic member offsets the main body, and the second end of the elastic member passes through the force-receiving part. middle.

In one embodiment, the nail base assembly includes a top plate fixedly installed on the main body, the top plate is provided with an escape groove and a through groove provided along the length direction, and the cutting knife assembly includes a blade and a guide block, The upper end of the blade passes through the through slot, the guide block is provided at the upper end of the blade and abuts against the upper surface of the top plate, the nail box base includes a bottom plate and a first side provided on both sides of the bottom plate along the length direction of the bottom plate The two ends of the fixing pin are respectively fixedly mounted on the first side plate and the second side plate in a direction parallel to the width of the bottom plate; the first end of the elastic member is connected to the first side plate and/or Or the second side plate is against each other, and the second end of the elastic member is against the force-receiving part; in the first state, the stopper part passes through the escape groove and is against the guide block.

In one embodiment, the nail box base includes a bottom plate and a first side plate and a second side plate provided on both sides of the bottom plate along the length direction of the bottom plate, and the fixing pin is fixedly installed on the bottom plate perpendicular to the direction of the bottom plate. , the air-firing safety includes a rotating part and a stopper part, the rotating part is rotationally mounted on the fixed pin; the first end of the elastic member offsets the bottom plate, and the second end of the elastic member offsets the bottom plate. The stops are against each other.

In one embodiment, the bottom plate is provided with a moving groove for guiding the movement of the cutting knife assembly along the length direction, the bottom plate is provided with an installation groove connected to the moving groove, and the locking assembly is installed on the installation groove. In the groove, in the first state, the air-firing safety is at least partially located in the moving groove, and in the second state, the air-firing safety is separated from the moving groove.

In one embodiment, the empty firing safety is slidably installed on the base of the nail box.

In one embodiment, the main body includes a main body part and a first installation part, the fixing pin is fixedly installed in the first installation part perpendicular to the direction of the cutting knife assembly, and the air firing safety is slidably installed on the first installation part. , the dry firing safety includes a connecting part movably installed on the fixed pin and a stopper protruding from the first mounting part, the stopper is provided with a first slope, and the first slope is self-contained from the connection part The direction toward the mounting part is gradually tilted away from the cutting knife assembly; the elastic member is provided on the fixing pin, the first end of the elastic member offsets the connecting part, and the second end of the elastic member offsets the first mounting part.

In one embodiment, the nail box base includes a bottom plate, a first side plate and a second side plate provided on both sides of the bottom plate along the length direction of the bottom plate, and a third side plate provided between the first side plate and the second side plate. Two mounting parts, the two ends of the fixed pin are fixedly installed on the first side plate and the second side plate respectively in the direction parallel to the width of the bottom plate, the air firing safety is slidably installed in the second mounting part, and the air firing safety The safety device includes a connecting portion and a stop portion movably mounted on the fixing pin. The stop portion is provided with a second slope, and the second slope gradually slopes away from the cutting knife assembly in the direction from the base of the nail box to the nail base assembly; The elastic member is provided in the air firing safety, the first end of the elastic member offsets the fixed pin, and the second end of the elastic member offsets the stopper.

The invention has the following beneficial effects:

The present invention provides a stapler that can prevent the cutting knife assembly from advancing through the empty firing safety in the locking assembly when the stapler is not equipped with a nail box assembly or a used nail box assembly is assembled, so that the firing operation cannot be performed, thereby preventing The stapler is accidentally triggered to avoid accidents in which human tissue is cut and cannot be sutured by the stapler, avoids causing massive bleeding in the patient, and improves the safety of the stapler.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of the first exploded structure of the stapler in Embodiment 3 of the present invention;

Figure 2 is a schematic diagram of the second exploded structure of the stapler in Embodiment 3 of the present invention;

Figure 3 is a schematic three-dimensional structural diagram of a hollow firing safety in Embodiment 3 of the present invention;

Figure 4 is a three-dimensional partial structural diagram of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 3 of the present invention;

Figure 5 is a three-dimensional partial structural diagram of the hollow firing safety, cutting knife assembly, and slider in the first state according to Embodiment 3 of the present invention;

Figure 6 is a three-dimensional partial structural diagram of the hollow firing safety and cutting knife assembly in the second state according to Embodiment 3 of the present invention;

Figure 7 is a three-dimensional partial structural diagram of the hollow firing safety, cutting knife assembly, and slider in the second state according to Embodiment 3 of the present invention;

Figure 8 is a three-dimensional partial structural diagram of the hollow firing safety, the cutting knife assembly, and the slider in the second state and the cutting knife assembly extends out of the main body in Embodiment 3 of the present invention;

Figure 9 is a schematic diagram of the exploded structure of the stapler in Embodiment 4 of the present invention;

Figure 10 is a schematic three-dimensional structural diagram of a hollow firing safety in Embodiment 4 of the present invention;

Figure 11 is a schematic front structural view of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 4 of the present invention;

Figure 12 is a schematic three-dimensional structural diagram of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 4 of the present invention;

Figure 13 is a schematic front structural view of the hollow firing safety and cutting knife assembly in the second state according to Embodiment 4 of the present invention;

Figure 14 is a schematic diagram of the exploded structure of the stapler in Embodiment 5 of the present invention;

Figure 15 is a partial structural schematic diagram of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 5 of the present invention;

Figure 16 is a partial structural schematic diagram of the hollow firing safety and cutting knife assembly in the second state according to Embodiment 5 of the present invention;

Figure 17 is a schematic diagram of the exploded structure of the stapler in Embodiment 6 of the present invention;

Figure 18 is a schematic three-dimensional structural diagram of the hollow firing safety in Embodiment 6 of the present invention;

Figure 19 is a first partial structural diagram of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 6 of the present invention;

Figure 20 is a second partial structural schematic diagram of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 6 of the present invention;

Figure 21 is a first partial structural diagram of the hollow firing safety and cutting knife assembly in the second state according to Embodiment 6 of the present invention;

Figure 22 is a second partial structural diagram of the hollow firing safety and cutting knife assembly in the second state according to Embodiment 6 of the present invention;

Figure 23 is a schematic diagram of the exploded structure of the stapler in Embodiment 7 of the present invention;

Figure 24 is a schematic three-dimensional structural diagram of the hollow firing safety in Embodiment 7 of the present invention;

Figure 25 is a partial structural schematic diagram of the hollow firing safety and cutting knife assembly in the first state according to Embodiment 7 of the present invention;

Figure 26 is a partial structural diagram of the hollow firing safety and cutting knife assembly in the second state according to Embodiment 7 of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the invention provided in the appended drawings is not intended to limit the scope of the claimed invention, but rather to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by "" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship where the applied product is customarily placed when used, or the orientation or positional relationship commonly understood by those skilled in the art, This is only to facilitate the description of the present invention and to simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise clearly stated and limited, the terms "setting", "installation", "connecting" and "connecting" should be understood in a broad sense. For example, it can be fixed The connection can also be a detachable connection or an integral connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the embodiments of the present invention, it should also be noted that the terms "first", "second", etc. used in this article do not specifically refer to the order or order, nor are they used to limit the case. They are only used to distinguish components or operations that are described in the same technical terms.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

The technical solutions in the present invention will be described below with reference to the accompanying drawings.

Example 1:

Not shown in the drawings, the stapler in a specific embodiment of the present invention includes:

Subject 1;

The nail base assembly 2 is fixedly installed on the main body 1;

The nail box base 3 is hingedly installed on the main body 1, and a jaw is formed between the nail base assembly 2 and the nail box base 3;

The cutting knife assembly 4 is movably installed in the main body 1 along the axial direction of the main body 1;

The locking component 5 is movably installed on the main body 1 or the nail box base 3 and is located in the jaws. The locking component 5 includes a fixing pin 51 fixedly installed on the main body 1 or the nail box base 3, and a fixing pin 51 movably installed on the fixing pin 51. The air firing safety 52 and the elastic member 53 acting on the air firing safety 52;

In the first state, the elastic force acts on the air-firing safety 52, and the locking component 5 is in contact with the cutting knife component 4;

In the second state, external force acts on the air firing safety 52, and the locking assembly 5 and the cutting knife assembly 4 are separated.

When the nail box assembly 6 is not loaded, since the empty firing safety 52 is affected by the elastic force of the elastic member 53, the locking assembly 5 is in contact with the cutting knife assembly 4, and the cutting knife assembly 4 cannot move forward, and the firing operation cannot be performed, thereby achieving It is a safety intention that the stapler cannot be fired when the staple box assembly 6 is not installed. According to this design, when the staple box assembly 6 is not loaded, it can prevent the stapler from being accidentally triggered, avoid accidents in which human tissue is cut and cannot be sutured by the stapler, avoid causing massive bleeding in the patient, and improve the safety of the stapler.

Among them, the elastic member 53 in this embodiment is any structure that can provide elastic force, such as a spring, a compression spring, a leaf spring, etc., which can be understood and accepted by those skilled in the art.

Example 2:

Not shown in the drawings, the difference from Embodiment 1 is that the stapler in this embodiment also includes: a nail box 61, which is detachably installed in the nail box base 3; a slider 62, along the length direction of the nail box 61 Slidingly installed on the nail box 61;

In the first state, the slider 62 is separated from the locking component 5;

In the second state, the slider 62 is in contact with the locking component 5 , and the slider 62 applies an external force to the locking component 5 .

It can be understood that when the stapler in this embodiment is loaded with the nail box assembly 6, the nail box assembly 6 includes the nail box 61 and the slider 62. If the nail box assembly 6 is in a used state, the nail box assembly 6 on the nail box 61 The slider 62 is located at the end far away from the cutting knife assembly 4, so the slider 62 is separated from the locking assembly 5. In the first state, the slider 62 cannot exert external force on the air firing safety 52, and the air firing safety 52 is always in contact with the cutting knife. The knife assembly 4 is in contact with each other, and the cutting knife assembly 4 cannot move forward, and the firing operation cannot be performed, thereby realizing the safety intention that the stapler cannot be fired when the used nail box assembly 6 is loaded; in the second state, due to the nail box assembly 6 In the unused state, the slider 62 on the nail box 61 is located near the end of the cutting knife assembly 4, so the slider 62 abuts the locking assembly 5. In the second state, the slider 62 can move toward the locking assembly 5. 5. Apply external force, and the air firing safety 52 is separated from the cutting knife assembly 4, and the obstruction to the cutting knife assembly 4 is released, so that the cutting knife assembly 4 can be fired smoothly to complete cutting and suturing.

According to this design, when the used staple box assembly 6 is installed, the stapler can be prevented from being accidentally triggered, avoiding accidents in which human tissue is cut and cannot be sutured by the stapler, avoiding massive bleeding of the patient, and improving the safety of the stapler.

Embodiment three:

Referring to Figures 1 to 7, the difference from Embodiment 1 or 2 is that the air firing safety 52 in this embodiment is rotatably mounted on the fixing pin 51.

According to this design, when the unused nail box assembly 6 is loaded, the slider 62 exerts an external force on the air-firing safety 52, which can cause the air-firing safety 52 to rotate around the axis away from the cutting knife assembly 4, thereby causing the air-firing safety 52 to be in contact with the cutting knife assembly 4. The knife assembly 4 is separated, and the air firing safety 52 is separated from the cutting knife assembly 4 to remove the obstruction to the cutting knife assembly 4, so that the cutting knife assembly 4 can be fired smoothly to complete cutting and suturing.

Specifically, as shown in FIG. 3 , the air-firing safety 52 in this embodiment includes a stopper 521 , a force-receiving part 522 , and a rotating part 523 connecting the stopper 521 and the force-receiving part 522 . The rotating part 523 is rotatably installed. on the fixing pin 51; in the first state, the elastic force acts on the force-receiving part 522, and the stopper part 521 abuts the cutting knife assembly 4; in the second state, the external force acts on the force-receiving part 522, and the stopper part 521 abuts on the cutting blade assembly 4; The stopper 521 is separated from the cutting blade assembly 4 . Among them, in the first state, the elastic force of the elastic member 53 acts on the force-receiving part 522, so that the stopper part 521 remains in contact with the cutting knife assembly 4; in the second state, the slider 62 moves against the force-receiving part 522. Applying an external force drives the air-firing safety 52 to rotate along the axis of the fixed pin 51, so that the stopper 521 can be separated from the cutting knife assembly 4, so that the air-firing safety 52 is separated from the cutting knife assembly 4, and the air-firing safety 52 is separated from the cutting knife. The components 4 are separated and the obstruction to the cutting knife component 4 is released, so that the cutting knife component 4 can be fired smoothly to complete cutting and suturing. According to this design, the safe operability of the stapler is improved and the patient is prevented from being cut and unable to be sutured in time.

Preferably, in order to facilitate the rotatable installation of the air-firing safety 52, the fixing pin 51 in this embodiment is axially fixed and installed on the main body 1 parallel to the main body 1; in order to facilitate the application of elastic force to the air-firing safety 52, the elastic member 53 is The first end is against the main body 1 , and the second end of the elastic member 53 is inserted into the force-receiving portion 522 .

Embodiment 4:

Referring to Figures 9 to 13, the difference from the third embodiment is that the nail base assembly 2 in this embodiment includes a top plate 21 fixedly installed on the main body 1, and the top plate 21 is provided with an escape groove 212 and a length along the length. The cutting knife assembly 4 includes a blade 41 and a guide block 42. The upper end of the blade 41 passes through the slot 211. The guide block 42 is provided at the upper end of the blade 41 and is against the upper surface of the top plate 21. The nail box base 3 includes The bottom plate 31 and the first side plate 32 and the second side plate 33 are provided on both sides of the bottom plate 31 along the length direction of the bottom plate 31. The two ends of the fixing pin 51 are fixedly installed on the first side plate 32 and the first side plate 32 and the second side plate 33 respectively in a direction parallel to the width of the bottom plate 31. On the second side plate 33; the first end of the elastic member 53 is against the first side plate 32 and/or the second side plate 33, and the second end of the elastic member 53 is against the force receiving portion 522; in the first state, The stopper 521 passes through the avoidance groove 212 and abuts against the guide block 42 .

According to this design, in the first state, the end of the stopper 521 away from the rotating part 523 can pass through the escape groove 212 and thereby offset the guide block 42 of the cutting knife assembly 4 above the top plate 21, thereby causing the empty firing safety 52 is in contact with the cutting knife assembly 4; in the second state, the slider 62 exerts an external force on the force-receiving part 522, so that the air firing safety 52 rotates axially around the fixed pin 51, so that the stopper 521 is received in the jaws. , the stopper 521 is separated from the guide block 42, so that the empty firing safety 52 is separated from the cutting knife assembly 4.

Embodiment five:

Referring to Figures 14 to 16, the difference from the third embodiment is that the nail box base 3 in this embodiment includes a bottom plate 31 and a first side plate 32 and a third side plate 32 provided on both sides of the bottom plate 31 along the length direction of the bottom plate 31. On the two side plates 33, the fixing pin 51 is fixedly installed on the base plate 31 perpendicularly to the direction of the base plate 31. The air firing safety 52 includes a rotating part 523 and a stopper part 521. The rotating part 523 is rotated and installed on the fixing pin 51; the third part of the elastic member 53 One end of the elastic member 53 abuts the bottom plate 31 , and a second end of the elastic member 53 abuts the stopper 521 .

Among them, the base plate 31 in this embodiment is provided with a moving groove along the length direction for guiding the movement of the cutting knife assembly 4, and the base plate 31 is provided with an installation groove connected with the moving groove, and the locking component 5 is installed in the installation groove. In the first state, the air-firing safety 52 is at least partially located in the moving groove. In the second state, the air-firing safety 52 is separated from the moving groove.

According to this design, in the first state, the stopper 521 is always against one side wall of the installation groove under the action of the elastic member 53 and its end away from the rotating part 523 extends into the moving groove for contact with the cutting blade. The components 4 offset each other, thereby avoiding false triggering when the staple box component 6 is not loaded or the staple box component 6 has been used, cutting human tissue and failing to suture in time; in the second state, unused staples are loaded into the stapler. After the cartridge assembly 6 is removed, the slider 62 can apply an external force to the stopper 521 to rotate the empty firing safety 52 around the axis, so that the end of the stopper 521 away from the rotating part 523 is separated from the moving groove, and the cutting knife assembly 4 can Slide along the extension direction of the moving groove to cut and suture the patient.

Embodiment 6:

Referring to FIGS. 17 to 22 , the difference from the first or second embodiment is that the air firing safety 52 in this embodiment is slidably mounted on the nail box base 3 .

Among them, the main body 1 in this embodiment includes a main body part 11 and a first installation part 12. The fixing pin 51 is fixedly installed in the first installation part 12 perpendicular to the direction of the cutting knife assembly 4, and the air firing safety 52 is slidably installed in the first installation part. In the part 12, the empty firing safety 52 includes a connecting part 524 movably installed on the fixing pin 51 and a stop part 521 protruding from the first mounting part 12. The stop part 521 is provided with a first inclined surface 5211. The first inclined surface 5211 gradually tilts away from the cutting knife assembly 4 in the direction from the connecting portion 524 to the mounting portion; the elastic member 53 is provided on the fixing pin 51, the first end of the elastic member 53 offsets the connecting portion 524, and the second end of the elastic member 53 is in contact with the second end of the elastic member 53. A mounting part 12 offsets each other.

According to this design, in the first state, before the nail box assembly 6 is installed or after the used nail box assembly 6 is installed, the slider 62 is separated from the first inclined surface 5211, and the stopper 521 is on the elastic member 53. Under the action, it is always in contact with the air-fire safety 52, causing the movement of the air-fire safety 52 to be restricted and unable to extend out of the main body 1, thereby preventing the user from mistakenly cutting and being unable to sew in time; in the second state, the unloaded After using the nail box assembly 6, the slider 62 on the nail box 61 is located at the end facing the empty firing safety 52, the slider 62 offsets the first slope 5211 of the empty firing safety 52, and the slider 62 faces the direction of the main body 1 The movement is transformed into a movement of the empty firing safety 52 away from the cutting knife assembly 4, so that the empty firing safety 52 is separated from the cutting knife assembly 4, and the cutting knife assembly 4 can smoothly slide out and cut and suture the patient.

Embodiment 7:

Referring to Figures 23 to 26, the difference from Embodiment 6 is that the nail box base 3 in this embodiment includes a bottom plate 31, first side plates 32 provided on both sides of the bottom plate 31 along the length direction of the bottom plate 31, and The second side plate 33, the second mounting portion 34 provided between the first side plate 32 and the second side plate 33, both ends of the fixing pin 51 are respectively fixedly installed on the first side plate 32 in a direction parallel to the width of the bottom plate 31. On the second side plate 33, the empty firing safety 52 is slidably installed in the second mounting part 34. The empty firing safety 52 includes a connecting part 524 movably installed on the fixing pin 51 and a stopper part 521. The stopper part 521 is provided with The second inclined surface 5212 gradually slopes away from the cutting knife assembly 4 in the direction from the nail box base 3 to the nail base assembly 2; the elastic member 53 is provided in the air firing safety 52, and the first end of the elastic member 53 is connected to the fixed The pin 51 is against each other, and the second end of the elastic member 53 is against the stopper 521 .

In order to install the empty firing safety 52, the connecting part 524 is provided with a movable groove 5241. The fixing pin 51 penetrates the movable groove 5241 and is installed on the nail box base 3. The length direction of the movable groove 5241 is perpendicular to the bottom plate 31, so the empty firing safety 52 can Move up and down perpendicular to the bottom plate 31.

According to this design, in the first state, before the nail box assembly 6 is installed or after the used nail box assembly 6 is installed, the slider 62 is separated from the second inclined surface 5212, and the stopper 521 is on the elastic member 53. Under the action, it is always in contact with the air-fire safety 52, causing the movement of the air-fire safety 52 to be restricted and unable to extend out of the main body 1, thereby preventing the user from mistakenly cutting and being unable to sew in time; in the second state, the unloaded After the nail box assembly 6 is used, the slider 62 on the nail box 61 is located at the end facing the empty firing safety 52. When the nail box base 3 rotates around the axis toward the nail seat assembly 2, the slider 62 and the empty firing safety The second inclined plane 5212 of 52 offsets, and the movement of the slider 62 towards the main body 1 is transformed into the movement of the air-firing safety 52 away from the cutting knife assembly 4, that is, the air-firing safety 52 moves upward, so that the air-firing safety 52 and the cutting knife assembly 4 phases are separated, the cutting knife assembly 4 can slide out smoothly and cut and suture the patient.

It can be seen from the above technical solutions that the present invention has the following beneficial effects:

The present invention provides a stapler that can prevent the cutting knife assembly from advancing through the empty firing safety in the locking assembly when the stapler is not equipped with a nail box assembly or a used nail box assembly is assembled, so that the firing operation cannot be performed, thereby preventing The stapler is accidentally triggered to avoid accidents in which human tissue is cut and cannot be sutured by the stapler, avoids causing massive bleeding in the patient, and improves the safety of the stapler.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the claims All changes within the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims shall not be construed as limiting the claim in question.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims (11)

1. A stapler, characterized in that the stapler includes: main body; The nail base assembly is fixedly installed on the main body; The base of the nail box is hingedly mounted on the main body, and a jaw is formed between the nail base assembly and the base of the nail box; A cutting knife assembly is movably installed in the main body along the axial direction of the main body; The locking assembly is movably installed on the main body or the base of the nail box and is located in the jaws. The locking assembly includes a fixing pin fixedly installed on the main body or the base of the nail box, and a locking pin movably installed on the fixing pin. The air-firing safety and the elastic member acting on the air-firing safety; In the first state, elastic force acts on the air-firing safety, and the locking component is in contact with the cutting knife component; In the second state, external force acts on the air-firing safety, and the locking component is separated from the cutting knife component. 2. The stapler according to claim 1, characterized in that the stapler further includes: A nail box is detachably installed in the base of the nail box; The slide block is slidably installed on the nail box along the length direction of the nail box; In the first state, the slider is separated from the locking component; In the second state, the slider is in contact with the locking component, and the slider exerts an external force on the locking component. 3. The stapler according to any one of claims 1 or 2, characterized in that the air-firing safety is rotatably mounted on the fixing pin. 4. The stapler according to claim 3, wherein the empty firing safety device includes a stopper, a force-receiving part, and a rotating part connecting the stopper and the force-receiving part, and the rotating part rotates Installed on the fixed pin; in the first state, an elastic force acts on the force-receiving part, and the stop part abuts the cutting knife assembly; in the second state, an external force acts on the force-receiving part part, the stop part is separated from the cutting blade assembly. 5. The stapler according to claim 4, characterized in that the fixing pin is fixedly installed on the main body parallel to the main body; the first end of the elastic member offsets the main body, and the elastic member The second end of the piece is inserted into the force-bearing part. 6. The stapler according to claim 4, wherein the nail base assembly includes a top plate fixedly installed on the main body, and an escape groove and a through groove provided along the length direction are provided on the top plate. The cutting blade assembly includes a blade and a guide block. The upper end of the blade passes through the slot. The guide block is located at the upper end of the blade and offsets the upper surface of the top plate. The nail box base includes a bottom plate and a guide block along the length direction of the bottom plate. The first side plate and the second side plate are provided on both sides of the base plate, and the two ends of the fixing pin are respectively fixedly installed on the first side plate and the second side plate in a direction parallel to the width of the base plate; the elastic member The first end of the elastic member is against the first side plate and/or the second side plate, and the second end of the elastic member is against the force-receiving part; in the first state, the stop part passes through the escape groove and is in contact with the guide blocks offset each other. 7. The stapler according to claim 3, wherein the nail box base includes a bottom plate and a first side plate and a second side plate provided on both sides of the bottom plate along the length direction of the bottom plate, and the fixing pin It is fixedly installed on the base plate perpendicularly to the direction of the base plate. The air firing safety includes a rotating part and a stopper part. The rotating part is rotationally installed on the fixed pin; the first end of the elastic member is connected to the base plate. To offset, the second end of the elastic member offsets the stop portion. 8. The stapler according to claim 7, wherein the base plate is provided with a moving groove along the length direction for guiding the movement of the cutting blade assembly, and the base plate is provided with a mounting groove connected to the moving groove. , the locking assembly is installed in the installation groove, in the first state, the air firing safety is at least partially located in the moving groove, and in the second state, the air firing safety is separated from the moving groove. 9. The stapler according to any one of claims 1 or 2, characterized in that the empty firing safety is slidably installed on the base of the nail box. 10. The stapler according to claim 9, wherein the main body includes a main body part and a first installation part, and the fixing pin is fixedly installed in the first installation part perpendicular to the direction of the cutting blade assembly, so The air-firing safety is slidably installed in the first installation part. The air-firing safety includes a connecting part movably installed on the fixing pin and a stop part protruding from the first installation part. The stop part is provided with a third An inclined surface, the first inclined surface gradually slopes away from the cutting knife assembly in the direction from the connecting part to the mounting part; the elastic member is provided on the fixing pin, the first end of the elastic member offsets the connecting part, and the elastic member The second end is against the first mounting part. 11. The stapler according to claim 9, wherein the nail box base includes a bottom plate, a first side plate and a second side plate provided on both sides of the bottom plate along the length direction of the bottom plate. The second mounting part between the side plate and the second side plate, the two ends of the fixing pin are respectively fixedly installed on the first side plate and the second side plate in a direction parallel to the width of the bottom plate, and the air firing safety is slidably installed In the second installation part, the empty firing safety includes a connecting part movably installed on the fixed pin and a stop part. The stop part is provided with a second slope, and the second slope extends from the base of the nail box to the nail. The seat assembly gradually tilts away from the cutting knife assembly in the direction; the elastic member is provided in the air firing safety, the first end of the elastic member offsets the fixed pin, and the second end of the elastic member offsets the stopper.