CN115681806A

CN115681806A - Lancing device

Info

Publication number: CN115681806A
Application number: CN202211345644.5A
Authority: CN
Inventors: 于跃; 杨俊盛
Original assignee: Jiangsu Leju Pharmaceutical Technology Co ltd; Jiangsu Yimingrong Pharmaceutical Medical Technology Co ltd
Current assignee: Jiangsu Leju Pharmaceutical Technology Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-03
Anticipated expiration: 2042-10-31
Also published as: WO2024093386A1; CN115681806B

Abstract

The invention relates to a puncturing device, which comprises a base, a first guide part and a puncturing needle, wherein the base is provided with a first accommodating cavity; a strut having a first end pivotably connected to the first end of the base; a connecting rod, the first end of which can be pivotally connected to the position of the pressure rod close to the first end of the pressure rod; the first end of the bottle seat is provided with a second guide part, the second guide part can be pivoted and movably connected to the first guide part, and the second end of the bottle seat and the second end of the connecting rod can be pivotally connected; the pressure lever can drive the bottle seat to move along the first guide part and then rotate around the second guide part in the first rotating direction through the connecting rod, so that the second end of the bottle seat leaves the first accommodating cavity; the pressure bar can drive the bottle seat to rotate on the second rotating direction around the second guide part through the connecting rod, so that the second end of the bottle seat enters the first accommodating cavity and then moves along the first guide part. The invention can conveniently realize the installation and the disassembly of the device to be punctured.

Description

Lancing device

Technical Field

The present invention relates to a device for piercing a container, and more particularly to a piercing device capable of piercing a small high-pressure gas bottle.

Background

A small-sized high-pressure gas bottle is a device for storing high-pressure gas, and is widely used in the fields of automobiles, chemical engineering, fire fighting, medical treatment, food, and the like, and one of its functions is to provide stable driving force to other devices by releasing high-pressure gas, for example, to provide driving force to a needleless injector.

When in use, the puncture device is connected with the small high-pressure gas bottle, and the small high-pressure gas bottle is punctured by the puncture device so as to release the high-pressure gas in the small high-pressure gas bottle.

The existing puncturing device and the small high-pressure gas bottle are complex to install and disassemble, and the need of further improvement exists.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a puncturing device which can conveniently realize the installation and the disassembly of a device to be punctured filled with high-pressure gas.

In order to solve the problems, the invention provides a puncturing device, which comprises a base, a first guide part and a puncturing needle, wherein the base is provided with a first accommodating cavity which is opened upwards, a first guide part is arranged on the side wall of the first accommodating cavity at a position close to the first end of the base, and the second end of the base is provided with the puncturing needle; a strut having a first end pivotally connected to the first end of the base; a connecting rod, the first end of which can be pivotally connected to the position of the pressure rod close to the first end of the pressure rod; a bottle seat, a first end of which is provided with a second guide part which can be pivoted and movably connected to the first guide part, and a second end of the bottle seat and a second end of the connecting rod can be pivoted and connected; when the pressure lever rotates to a second position from a first position to a second position in a first rotating direction around the first end of the base, the pressure lever drives the bottle seat to move along the first guide part and then rotate in the first rotating direction around the second guide part through the connecting rod, so that the second end of the bottle seat leaves the first accommodating cavity; when the pressing rod rotates to the first position from the second position to the first position in the second rotating direction around the first end of the base, the pressing rod drives the bottle seat to rotate in the second rotating direction around the second guide part firstly through the connecting rod, so that the second end of the bottle seat enters the first accommodating cavity and then moves along the first guide part.

Preferably, the bottle seat is provided with a second accommodating cavity and a third accommodating cavity which is opened at the second end of the bottle seat, the second accommodating cavity and the third accommodating cavity are arranged along the length direction of the bottle seat, and an elastic component is arranged in the second accommodating cavity and can provide elastic bias for a device to be punctured which is positioned in the third accommodating cavity.

Preferably, an annular stop part is arranged between the second accommodating cavity and the third accommodating cavity; the elastic assembly comprises a connecting piece and a first elastic element, the first end of the first elastic element abuts against the bottom wall of the second containing cavity, the second end of the first elastic element abuts against the connecting piece, one end, close to the first elastic element, of the connecting piece is provided with an expansion part extending along the radial direction, the outer diameter of the expansion part is larger than the inner diameter of the annular stopping part, the expansion part is located in the second containing cavity, one end, far away from the first elastic element, of the connecting piece penetrates through the annular stopping part and then is inserted into the third containing cavity and can contact the device to be punctured.

Preferably, one side of the connecting piece facing the third accommodating cavity is provided with an installation groove, and a magnet is arranged in the installation groove.

Preferably, the second end of depression bar is provided with from the lockhole, the second end of base is provided with: one end of the gas channel can be communicated to a high-pressure gas source from the device to be punctured; the piston rod can slide along the length direction of the fourth accommodating cavity, the second elastic element can provide elastic force for enabling the piston rod to slide towards the direction far away from the self-locking hole, and the other end of the gas channel is communicated to the part, far away from the self-locking hole, of the fourth accommodating cavity; the high-pressure gas flowing in through the gas channel or the high-pressure gas with the regulated pressure can push the piston rod to be inserted into the self-locking hole of the pressure rod while overcoming the elastic force of the second elastic element after flowing into the fourth accommodating cavity.

Preferably, the puncture needle is internally provided with a gas communication channel, and the second end of the base is provided with a first connecting port communicated to the gas communication channel.

Preferably, a gap exists between the piston part of the piston rod and the side wall of the fourth accommodating cavity, so that high-pressure gas flowing in through the gas channel or high-pressure gas with regulated pressure can flow into one end, far away from the self-locking hole, of the fourth accommodating cavity through the gap, and a time delay agent is injected into the gas channel.

Preferably, the side wall of the second end of the base is provided with a second connection port, and the gas channel is communicated to a high-pressure gas source from the device to be punctured through the second connection port.

Preferably, one of the first guide and the second guide is a slide groove, and the other of the first guide and the second guide is a guide shaft.

Preferably, the lower surface of the bottle seat is provided with a soft pad, and the side wall of the bottle seat is provided with a boss.

According to the puncturing device, under the matching of the first guide part and the second guide part, the second end of the bottle seat is driven by the pressure lever and the connecting rod to enter or leave the first accommodating cavity of the base, so that the device to be punctured filled with high-pressure gas can be conveniently mounted and dismounted.

Further, the present invention adds a first resilient element and a connector to enable the entire puncturing device to accommodate gas bottles of different lengths.

Furthermore, the gas channel, the fourth accommodating cavity, the piston rod and the second elastic element are arranged in the fourth accommodating cavity, and the pressure rod can be locked when high-pressure gas exists in the device to be punctured, so that the pressure rod is prevented from being opened due to misoperation of workers, and danger is avoided.

The method and apparatus of the present invention have other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following embodiments incorporated herein, which together serve to explain certain principles of the invention.

Drawings

FIG. 1 is a first schematic view showing an operating state of a lancing device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view showing an operating state of the lancing device according to the embodiment of the present invention;

FIG. 4 is a schematic view showing a third operating state of the lancing device according to the embodiment of the present invention;

FIG. 5 is a cross-sectional view of the bottle holder;

FIG. 6 is a cross-sectional view of the connector;

FIG. 7 is a cross-sectional view of FIG. 4;

FIG. 8 is a perspective view of the bottle holder;

FIG. 9 is an enlarged view of a portion of FIG. 2;

FIG. 10 is a schematic view of the lancing device of FIG. 3 from another perspective;

FIG. 11 is a schematic view of the lancing device in the state of FIG. 1, from another perspective;

FIG. 12 is a first schematic view of the piston rod, which illustrates the piston rod not being pushed by high pressure gas;

fig. 13 is a second schematic diagram of the operating principle of the piston rod, which illustrates the state that the piston rod is pushed by high-pressure gas.

It should be understood that the drawings are not necessarily to scale, presenting a simplified representation of various features illustrative of the invention, illustrative of the basic principles of the invention. The specific design features disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the particular application and environment of use.

In the drawings, like numerals refer to like or equivalent parts throughout the several views of the drawings.

Detailed Description

Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the invention to these exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

A lancing device according to an embodiment of the present invention is described below with reference to fig. 1 to 13.

As shown in fig. 1, the lancing device according to the embodiment of the present invention includes: a base 100, a pressure bar 200, a connecting rod 300 and a bottle seat 400.

The chassis 100 has a first receiving chamber 101 which is open upward, a first guide portion 103 is provided on a side wall of the first receiving chamber 101 near a first end 102 of the chassis 100, and a lancet 105 is provided on a second end 104 of the chassis 100 (see fig. 2 for cooperation).

The first end 201 of the strut 200 is pivotally connected to the first end 102 of the base 100.

The first end 301 of the link 300 is pivotally connected to the plunger 200 at a location proximate to the first end 201 of the plunger 200.

The first end 401 of the bottle holder 400 is provided with a second guide 402, the second guide 402 is pivotably and movably connected to the first guide 103, and the second end 403 of the bottle holder 400 is pivotably connected with the second end 302 of the link 300. The bottle holder 400 is used for mounting a device to be punctured containing high-pressure gas. For example, the device to be punctured may be a gas bottle 500 containing high pressure carbon dioxide, and in the latter embodiment, the device to be punctured is described by taking the gas bottle 500 as an example.

Wherein, when the pressing lever 200 rotates from the first position (i.e., the position of fig. 4) to the second position (i.e., the position of fig. 1) in the first rotating direction (i.e., the counterclockwise direction in fig. 1 to 4) around the first end 102 of the base 100 (i.e., rotates upward), the pressing lever 200 drives the bottle holder 400 to move along the first guide portion 103 and then rotate around the second guide portion 402 in the first rotating direction (i.e., the counterclockwise direction in fig. 1 to 4) through the connecting rod 300 (i.e., rotates upward), so that the second end 403 of the bottle holder 400 leaves the first accommodating chamber 101.

When the pressing lever 200 rotates (i.e., rotates downward) from the second position (i.e., the position of fig. 1) to the first position (i.e., the position of fig. 4) in the second rotation direction (i.e., the clockwise direction in fig. 1 to 4) around the first end 102 of the base 100, the pressing lever 200 drives the bottle holder 400 to rotate (i.e., rotate downward) around the second guide portion 402 in the second rotation direction (i.e., the clockwise direction in fig. 1 to 4) first through the connecting rod 300, so that the second end 403 of the bottle holder 400 enters the first receiving cavity 101 and then moves along the first guide portion 103.

Under the matching of the first guide part 103 and the second guide part 402, the second end 403 of the bottle holder 400 is driven by the pressure lever 200 and the connecting rod 300 to enter or leave the first accommodating cavity 101 of the base 100, so that the device to be punctured containing high-pressure gas can be mounted and dismounted more conveniently.

The second end 104 of the base 100 is provided with a first connection port 115 (see fig. 2) and the first connection port 115 is connected to an external device requiring a high pressure air source through a first pipeline (not shown). The puncture needle 105 is internally provided with a gas communication channel 116 (see fig. 9), the gas communication channel 116 is communicated to the first connection port 115, when the gas bottle 500 is contacted with the puncture needle 105, the puncture needle 105 can puncture the gas bottle 500 under certain pressure, and the gas in the gas bottle 500 can flow into the first connection port 115 through the gas communication channel 116 in the puncture needle 105 and then flow into an external device needing a high-pressure gas source through a first pipeline.

In an exemplary embodiment, one of the first guide 103 and the second guide 402 is a slide groove, and the other of the first guide 103 and the second guide 402 is a guide shaft.

In one embodiment, as shown in fig. 1, the first guide portion 103 is a chute and the second guide portion 402 is a guide shaft.

In an exemplary embodiment, as shown in fig. 2 and 5, the bottle holder 400 has a second receiving chamber 404 and a third receiving chamber 405 opened at the second end 403 of the bottle holder 400, the second receiving chamber 404 and the third receiving chamber 405 are arranged along the length direction of the bottle holder 400, the second receiving chamber 404 is provided with a resilient member 406, and the resilient member 406 can provide resilient bias to the gas bottle located in the third receiving chamber 405.

In an exemplary embodiment, as shown in fig. 5, an annular stop 407 is disposed between the second housing cavity 404 and the third housing cavity 405.

As shown in fig. 2, the elastic component 406 includes a connecting piece 408 and a first elastic element 409, a first end of the first elastic element 409 abuts against the bottom wall of the second accommodating cavity 404, and a second end of the first elastic element 409 abuts against the connecting piece 408; as shown in fig. 6, one end of the connecting member 408 close to the first elastic member 409 is provided with an expanded portion 410 extending in the radial direction, an outer diameter D1 of the expanded portion 410 is larger than an inner diameter D2 of the annular stopping portion 407, the expanded portion 410 is located in the second accommodating chamber 404, and one end of the connecting member 408 far from the first elastic member 409 passes through the annular stopping portion 407 and then is inserted into the third accommodating chamber 405 and can contact the gas bottle 500. The gas bottle 500 is placed in the third receiving chamber 405 and the bottom of the gas bottle 500 abuts against one end of the connector 408.

When the bottle holder 400 rotates from the inclined state of fig. 1 to the state of fig. 3 around the second guiding portion 402, the first elastic element 409 elastically supports the gas bottle 500 through the connecting member 408, and continues to press the second end 202 of the pressing rod 200 downward, so that the gas bottle 500 moves toward the direction close to the puncture needle 105, so that the puncture needle 105 punctures the gas bottle 500. In this process, the first elastic member 409 provides a greater elastic supporting force to the gas bottle 500 through the connection member 408 than the piercing force applied to the gas bottle 500 by the piercing needle so that the piercing needle 105 can pierce the gas bottle 500.

The commercially available gas bottles 500 have a large tolerance in length dimension, and the arrangement of the first resilient member 409 and the connecting member 408 allows the entire puncturing device to accommodate gas bottles 500 of different lengths. When the gas bottle 500 is longer, the first elastic element 409 is compressed to a greater extent to accommodate the longer gas bottle 500; when the gas bottle 500 is shorter, the first resilient member 409 is compressed less to accommodate the shorter gas bottle 500.

The provision of the annular stop 407 prevents the resilient member 406 from sliding out of the vial seat 400.

The difference in length of the gas bottle 500 preferably does not exceed the length L of the portion of the connector 408 that passes through the annular stop 407 (see also fig. 2), preventing the connector 408 from disengaging the annular stop 407.

In an exemplary embodiment, the first elastic member 409 may be a gas spring or an elastic body, and the kind of the first elastic member 409 is not limited thereto, and may be any one of the forms of the related art as long as the above-described function can be achieved.

In an exemplary embodiment, as shown in fig. 2 and 6, a side of the connection member 408 facing the third receiving chamber 405 is provided with a mounting groove 411, and a magnet 412 is disposed in the mounting groove 411.

The magnet 412 can attract the gas bottle 500, thereby positioning the gas bottle 500.

In an exemplary embodiment, as shown in fig. 7, the second end 202 of the plunger 200 is provided with a self-locking hole 203, and the second end 104 of the base 100 is provided with: a gas channel 106 and a fourth receiving chamber 107.

One end 108 of the gas channel 106 is capable of being communicated to a source of high pressure gas originating from the gas bottle 500. Specifically, the sidewall of the second end 104 of the base 100 is provided with a second connection port 117, the aforementioned first pipeline is connected to the second connection port 117 through a second pipeline (not shown), the second connection port 117 is communicated to the one end 108 of the gas channel 106, and a pressure regulating device may be provided on the first pipeline, and the connection point of the second pipeline and the first pipeline may be located upstream of the pressure regulating device or may be located downstream of the pressure regulating device. The high pressure gas in the gas bottle 500 flows from the first line to the second line and finally to the gas channel 106.

The piston rod 109 and the second elastic element 110 are arranged inside the fourth accommodating chamber 107, the piston rod 109 can slide along the length direction of the fourth accommodating chamber 107, the second elastic element 110 can provide an elastic force for sliding the piston rod 109 in a direction away from the self-locking hole 203 (i.e., in the direction of arrow a in fig. 7), and the other end 111 of the gas passage 106 is communicated to a portion of the fourth accommodating chamber 107 away from the self-locking hole 203.

The high-pressure gas flowing in through the gas passage 106 can push the piston rod 109 to be inserted into the self-locking hole 203 of the pressure lever 200 while overcoming the elastic force of the second elastic element 110 after flowing into the fourth accommodating chamber 107, so as to lock the pressure lever 200, prevent the pressure lever from being opened by the misoperation of a worker under the condition that the gas bottle 500 contains high-pressure gas, and avoid causing accidents.

In an exemplary embodiment, the second elastic member 110 may be a spring, and the kind of the second elastic member 110 is not limited thereto, and may be any one of the forms of the related art as long as the above-described function can be achieved.

In an exemplary embodiment, a gap exists between a piston portion (a portion far from the self-locking hole 203) of the piston rod 109 and a side wall of the fourth accommodating chamber 107, so that the high-pressure gas flowing in through the gas passage 106 can flow into an end of the fourth accommodating chamber 107 far from the self-locking hole 203 through the gap, and the gas passage 106 is injected with the time delay agent.

The time delay agent enables the gas in the gas channel 106 to slowly flow into the fourth accommodating cavity 107, so that the pushing speed of the high-pressure gas on the piston rod 109 is reduced, and one end of the piston rod 109 penetrates out of the fourth accommodating cavity 107 before the pressing rod 200 is pressed down to the position, so that the pressing of the pressing rod 200 is influenced.

In an exemplary embodiment, the time delay agent may be butter or damping grease, and the kind of the time delay agent is not limited thereto, and may be any one of the forms in the prior art as long as the above function can be achieved. The butter can realize the time delay function when the pressure is low, and the damping grease can realize the time delay function when the pressure is high.

In an exemplary embodiment, as shown in fig. 7, 12 and 13, the piston portion (i.e., the portion away from the self-locking hole 203) of the piston rod 109 is provided with a first groove 113, the first groove 113 is an annular groove, and the gas and the time-delay agent of the gas passage 106 enter the gap from the first groove 113, so that the force applied to the outer circumferential surface of the piston rod 109 is uniform.

In an exemplary embodiment, as shown in fig. 7, the piston portion of the piston rod 109 (i.e., the portion away from the self-locking hole 203) is further provided with a second groove 118, and a sealing ring may be installed in the second groove 118.

In an exemplary embodiment, as shown in fig. 8, the lower surface of the bottle holder 400 is provided with a soft pad 413, and the soft pad 413 can reduce friction between the lower surface of the bottle holder 400 and the base 100 and reduce scratches.

In an exemplary embodiment, the material of the soft pad 413 may be nylon, and the material of the soft pad 413 is not limited thereto, and may be any one of the prior art as long as the above function can be achieved.

In an exemplary embodiment, the sidewall of the bottle holder 400 is provided with a boss 414. In one aspect, the boss 414 may limit the bottle holder 400 in its width direction; on the other hand, the boss 414 is hidden in the first accommodating cavity 101 of the base 100, and even if a wear scar is generated due to sliding, the wear scar is generated at a position which is not easy to be seen by a user, so that the aesthetic property of the whole device is ensured, and the use experience of the user is favorably improved.

In an exemplary embodiment, as shown in fig. 1, 10 and 11, the side wall of the plunger 200 is provided with a locking groove 204, the locking groove 204 has a first guide surface 205 and a second guide surface 206, one side of the base 100 is provided with the striker 114, the bottom of the striker 114 is repositionably mounted to the base 100, and the top of the striker 114 has a pin 119.

During depression of the plunger 200, the first guide surface 205 of the locking groove 204 can push the pin 119 so that the pin 119, with the shackle 114, can rotate around the bottom of the shackle 114 to allow the pin 119 to clear the locking groove 204 so that the pin 119 can snap into the locking groove 204, thereby locking the plunger 200.

When it is desired to open the plunger 200, the operator pushes directly on the top of the shackle 114, causing the shackle 114 to rotate about its bottom to cause the pin 119 to slide out of the locking slot 204 along the second guide surface 206, thereby unlocking the plunger 200.

The operation of the lancing device according to the embodiment of the present invention will be described with reference to the accompanying drawings.

In the state of fig. 1, the bottle seat 400 forms a certain angle with the base 100, and the second end 403 of the bottle seat 400 is located above (i.e., outside) the first accommodating cavity 101 of the base 100, so that the gas bottle 500 can be conveniently and directly installed in the bottle seat 400 or the gas bottle 500 can be conveniently replaced. Wherein the magnet 412 in the connector 408 is capable of positioning the gas bottle 500 to prevent the gas bottle 500 from shaking in the bottle holder 400.

Pressing the second end 202 of the plunger 200 downward causes the plunger 200 to rotate (i.e., rotate downward) from the second position (i.e., the position of fig. 1) in a second rotational direction (i.e., clockwise in fig. 1-4) about the first end 102 of the base 100 and rotates the bottle holder 400 via the linkage 300.

After the pressing rod 200 is rotated to the position shown in fig. 3, the second end 403 of the bottle holder 400 has entered the first receiving chamber 101, and the bottle holder 400 is not rotated any more.

The second end 202 of the pressing rod 200 is pressed downwards continuously, so that the bottle seat 400 moves to the state of fig. 4 along the first guide part 103, so that the gas bottle 500 contacts the puncture needle 105, and the puncture needle punctures the gas bottle 500, and therefore, the high-pressure gas in the gas bottle 500 flows into an external device needing to use the high-pressure gas through the gas communication channel 116 inside the puncture needle 105, the first connection port 115 and the first pipeline.

During depression of the second end 202 of the striker 200, the first guide surface 205 of the locking slot 204 pushes against the pin 119, causing the pin 119 to rotate the shackle 114 about the bottom of the shackle 114, allowing the pin 119 to clear the locking slot 204 so that the pin 119 can snap into the locking slot 200.

In the state of fig. 4, the high-pressure gas in the gas cylinder 500 flows into the one end 108 of the gas channel 106 through the first line and the second line, and further flows into the gas channel 106. The high pressure gas flowing through the gas passage 106 can push the piston rod 109 to be inserted into the self-locking hole 203 of the pressing lever 200 while overcoming the elastic force of the second elastic member 110 after flowing into the fourth accommodation chamber 107, so as to lock the pressing lever 200.

After the high pressure gas in the gas bottle 500 is mostly used up, the residual gas can be discharged through a pressure relief device (not shown). At this point, gas bottle 500 needs to be replaced.

After the pressure relief device exhausts the residual gas, the gas channel 106 is not filled with high-pressure gas, and the compressed second elastic element 110 pushes the piston rod 109 to slide in a direction away from the self-locking hole 203 (i.e. in the direction of arrow a in fig. 7), so that the piston rod 109 is separated from the self-locking hole 203, and the lock of the piston rod 109 on the press rod 200 is released.

When the gas bottle 500 needs to be replaced, the top of the latch 114 is pushed directly so that the latch 114 rotates around its bottom to cause the pin 119 to slide out of the locking slot 204 along the second guide surface 206, thereby unlocking the plunger 200.

The second end 202 of the press rod 200 is rotated upward such that the press rod rotates (i.e., rotates upward) in a first rotational direction (i.e., counterclockwise in fig. 1-4) around the first end 102 of the base 100 from a first position (i.e., the position of fig. 4) to move the bottle holder 400 along the first guide 103 to the position of fig. 3 via the connecting rod 300, at which time the second guide 402 has slid to the end of the first guide 103 (the end near the first end 102 of the base 100).

Continuing to rotate the pressing rod 200 upwards, since the second guiding portion 402 has slid to the end of the first guiding portion 103, the pressing rod 200 will drive the bottle holder 400 to rotate (i.e. rotate upwards) around the second guiding portion 402 in the first rotating direction (i.e. counterclockwise direction in fig. 1 to 4) through the connecting rod 300, so that the second end 403 of the bottle holder 400 leaves the first accommodating cavity 101, i.e. the bottle holder 400 and the base 100 form a certain included angle, so as to replace the gas bottle 500 more conveniently.

For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner", "outer", "upper", "lower", "upward", "downward", "front", "rear", "back", "inside", "outside", "inward", "outward", "inside", "outside", "inner", "outer", "forward", "rearward" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the present invention and its practical application to enable others skilled in the art to make and utilize various exemplary embodiments of the present invention and various alternatives and modifications thereof. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A lancing device, comprising:

the needle holder comprises a base, a first guide part and a second guide part, wherein the base is provided with a first accommodating cavity which is opened upwards, the position of the side wall of the first accommodating cavity, which is close to the first end of the base, is provided with a first guide part, and the second end of the base is provided with a needle;

a strut having a first end pivotably connected to the first end of the base;

a connecting rod, the first end of which can be pivotally connected to the position of the pressure rod close to the first end of the pressure rod;

a bottle seat, a first end of which is provided with a second guide part which can be pivoted and movably connected to the first guide part, and a second end of the bottle seat and a second end of the connecting rod can be pivoted and connected;

when the pressure lever rotates to a second position from a first position to a second position in a first rotating direction around the first end of the base, the pressure lever drives the bottle seat to move along the first guide part and then rotate in the first rotating direction around the second guide part through the connecting rod, so that the second end of the bottle seat leaves the first accommodating cavity;

when the pressing rod rotates to the first position from the second position to the first position in the second rotating direction around the first end of the base, the pressing rod drives the bottle seat to rotate in the second rotating direction around the second guide part firstly through the connecting rod, so that the second end of the bottle seat enters the first accommodating cavity and then moves along the first guide part.

2. A lancing device according to claim 1, wherein the vial base has a second receiving chamber and a third receiving chamber opening at the second end of the vial base, the second and third receiving chambers being arranged along the length of the vial base, the second receiving chamber housing a resilient member therein, the resilient member being capable of providing a resilient bias to a device to be lanced located in the third receiving chamber.

3. The lancing device of claim 2, wherein an annular stop is disposed between the second receiving chamber and the third receiving chamber;

the elastic assembly comprises a connecting piece and a first elastic element, the first end of the first elastic element abuts against the bottom wall of the second containing cavity, the second end of the first elastic element abuts against the connecting piece, one end, close to the first elastic element, of the connecting piece is provided with an expansion part extending along the radial direction, the outer diameter of the expansion part is larger than the inner diameter of the annular stopping part, the expansion part is located in the second containing cavity, one end, far away from the first elastic element, of the connecting piece penetrates through the annular stopping part and then is inserted into the third containing cavity and can contact the device to be punctured.

4. The lancing device according to claim 3, wherein a side of the connecting member facing the third receiving chamber is provided with a mounting groove in which a magnet is disposed.

5. A lancing device according to claim 1, wherein the second end of the pressure bar is provided with a self-locking aperture and the second end of the base is provided with:

one end of the gas channel can be communicated to a high-pressure gas source from the device to be punctured; and

the piston rod can slide along the length direction of the fourth accommodating cavity, the second elastic element can provide elastic force for enabling the piston rod to slide towards the direction far away from the self-locking hole, and the other end of the gas channel is communicated to the part, far away from the self-locking hole, of the fourth accommodating cavity;

the high-pressure gas flowing in through the gas channel or the high-pressure gas with the regulated pressure can push the piston rod to be inserted into the self-locking hole of the pressure rod while overcoming the elastic force of the second elastic element after flowing into the fourth accommodating cavity.

6. A lancing device according to claim 1, wherein the lancet has a gas communication channel therein, the second end of the base is provided with a first connection port which communicates to the gas communication channel.

7. The lancing device according to claim 5, wherein a gap is formed between the piston portion of the piston rod and the side wall of the fourth receiving chamber, so that the high pressure gas or the pressure-regulated high pressure gas flowing through the gas passage can flow into the end of the fourth receiving chamber away from the self-locking hole through the gap, and the gas passage is filled with the time delay agent.

8. The lancing device according to claim 7, wherein the side wall of the second end of the base is provided with a second connection port through which the gas channel communicates to a source of high pressure gas originating from the device to be lanced.

9. The lancing device according to claim 1, wherein one of the first guide and the second guide is a slide groove and the other of the first guide and the second guide is a guide shaft.

10. A lancing device according to claim 1, wherein the lower surface of the vial base is provided with a cushion and the side wall of the vial base is provided with a boss.