A lancing gun

Abstract

The application discloses a puncture gun, which comprises a seat body, a front clamp, a rear clamp, a first elastic member and a pushing member. The front clamp and the rear clamp are arranged on the front upper end of the seat body, the rear clamp is slidable on the seat body in the front-rear direction, the front clamp and the rear clamp are used for clamping the puncture member, and the front clamp and the rear clamp can be switched to be opened or clamped. When the rear clamp moves forward, the clamping force of the rear clamp on the puncture member is greater than the clamping force of the front clamp on the puncture member. When the rear clamp moves backward, the clamping force of the rear clamp on the puncture member is not greater than the clamping force of the front clamp on the puncture member. The rear clamp is connected with the seat body or the front clamp through the first elastic member, and the elastic force of the first elastic member is used for driving the rear clamp to move backward. The pushing member is arranged on the rear upper end of the seat body. When the pushing member is triggered under the action of external force, the pushing member is pushed by the driving end to move forward. When the external force is removed, the rear clamp slides backward relative to the puncture member to reset, and drives the pushing member to reset. The puncture gun has simple structure and can be continuously triggered.

Description

Technical Field

[0001] This invention belongs to the field of puncture technology, and particularly relates to a puncture gun. Background Technology

[0002] Currently, there are many types of puncture guns, but most of them have drawbacks such as complex structure, large size, and difficulty in operation. For example, the puncture gun disclosed in document CN214073499U "Thoracentesis Gun" also uses a gear and rack structure to drive the puncture piece into the tissue, but its gun body is relatively long. This results in a limited length of the puncture gun that can enter the tissue. At the same time, its clamping force on the puncture piece cannot be adjusted according to the resistance. Once it encounters difficult-to-access locations such as fascia in the tissue during puncture, the puncture piece may slip relative to the puncture gun, requiring manual assistance. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a piercing gun that is compact in structure and easy to use.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a puncture gun, which is used to clamp a puncture component and push the puncture component into the tissue segment by segment, the puncture component including a puncture sheath and a puncture needle sleeved in the puncture sheath, including a seat, a front clamp, a rear clamp, a first elastic member and a pushing member; The base is arranged in the front-to-back direction. The front clamp and the rear clamp are both located at the upper front end of the base, and the rear clamp is located behind the front clamp. The rear clamp can slide on the base in the front-to-back direction. Both the front clamp and the rear clamp are used to clamp the puncture piece, and both can be switched to open or close. When the rear clamp moves forward, the clamping force on the puncture piece is greater than the clamping force on the puncture piece by the front clamp. When the rear clamp moves backward, the clamping force on the puncture piece is not greater than the clamping force on the puncture piece by the front clamp. One end of the first elastic element is connected to the rear clamp, and the other end of the first elastic element is connected to the seat or the front clamp. The elastic force of the first elastic element is used to drive the rear clamp to move backward relative to the seat to a reset position. The pusher is located at the upper rear end of the seat. The pusher has a trigger end and a drive end. When the pusher is triggered by an external force, the drive end pushes the rear clamp to move forward against the elastic force of the first elastic member. When the external force is removed, the rear clamp slides backward relative to the puncture member to reset under the elastic force of the first elastic member, and drives the pusher to reset.

[0005] The beneficial effects of the above-mentioned technical solution of the present invention are as follows: the puncture piece can be clamped by the front clamp and the rear clamp together, and then the pusher is triggered, which pushes the rear clamp forward. When the rear clamp moves forward, its clamping force on the puncture piece increases, so that the puncture piece can move forward relative to the front clamp to penetrate the tissue. After the rear clamp moves forward into place, the external force can be removed. At this time, the elastic force of the first elastic element will drive the rear clamp to move backward until it is reset. During the backward movement, the clamping force of the rear clamp on the puncture piece is less than the clamping force of the front clamp on the puncture piece. Therefore, when the rear clamp moves backward, it will not drive the puncture piece to move backward to retract in the tissue. At the same time as the rear clamp moves backward, it also drives the pusher to gradually reset, so as to facilitate continuous stimulation until the needle tip reaches the target site. Then, both the front clamp and the rear clamp are opened to separate the puncture gun from the puncture piece.

[0006] Based on the above technical solution, the present invention can be further improved as follows: Furthermore, the front clamp includes a first pin, a second elastic element, and two front clamping ears. The two front clamping ears are both vertically arranged and spaced apart in the left-right direction at the upper front end of the base. The first pin is arranged in the front-back direction between the two front clamping ears, and the two front clamping ears are rotatably connected by the first pin. The second elastic element is arranged in the left-right direction between the two front clamping ears and is located below the first pin. The two ends of the second elastic element are respectively connected to the lower ends of the two front clamping ears. The upper ends of the two front clamping ears are recessed on one side close to each other, and front engagement grooves are through and aligned with each other. The elastic force of the second elastic element is used to drive the two front clamping ears to rotate around the first pin until the upper ends fit together, so as to form a clamping channel for the puncture member to pass through the two front engagement grooves.

[0007] The beneficial effect of the above-mentioned further technical solution is that the middle part of the two front clamping ears is rotatably connected by the first pin, and the second elastic element is located between the lower ends of the two front clamping ears. At this time, the second elastic element always applies a clamping force to the two front clamping ears, and when the front clamp holds the puncture piece, it is precisely the clamping channel formed by the two front biting grooves that allows the puncture piece to pass through. The function of the front clamp is twofold: first, to clamp the puncture piece, and second, to straighten the puncture conditions.

[0008] Furthermore, the front end of the seat body is provided with two limiting posts that are spaced apart in the left-right direction. The lower end of each of the two front clamping ears has an arc-shaped limiting hole, and the arc center of each of the two limiting holes is coaxial with the first pin. The two limiting holes correspond one-to-one with the two limiting posts. The front end of each limiting post passes through the corresponding limiting hole, and the front end of each limiting post has an enlarged first limiting part. The two front clamping ears are movably assembled to the upper front end of the seat body through the corresponding limiting posts.

[0009] The beneficial effect of the above-mentioned further technical solution is that the two front clamping ears can cooperate with the limiting post on the base through the limiting hole, so that the two front clamping ears can be assembled on the base and have a certain amount of movement relative to the base (so that the front clamp can be clamped or opened).

[0010] Furthermore, the upper periphery of each of the two front clamping ears has a rearwardly extending enclosing skirt. When the two front clamping ears rotate to their upper ends and fit together, the seat and the two front clamping ears enclose to form a rearwardly facing receiving groove. The rear clamp is located between the two enclosing skirts and can move in the front-back direction between the two enclosing skirts. Under the action of the front clamp, the rear clamp opens or closes synchronously with the front clamp. When both the front clamp and the rear clamp are closed, the rear clamp is located in the receiving groove.

[0011] The beneficial effect of the above-mentioned further technical solution is that the rear clamp is always in the receiving groove formed by the two enclosing skirts, and the opening or closing of the rear clamp is affected by the front clamp and is synchronized with the front clamp. That is, when the front clamp opens, it will drive the rear clamp to open, and when the front clamp closes, it will drive the rear clamp to close, and the rear clamp is kept closed under the action of the front clamp.

[0012] Furthermore, the rear clamp includes a second pin and two rear clamping ears. The two rear clamping ears are both vertically arranged and spaced apart in the left-right direction at the upper end of the base body, and located between the two enclosing skirts. The second pin is arranged in the front-back direction between the two rear clamping ears, and the two rear clamping ears are rotatably connected by the second pin. The upper ends of the two rear clamping ears on the side closest to each other are recessed with rear engagement grooves that are through and aligned with each other. When the two rear clamping ears are rotated to the point where their upper ends are in contact with each other, the two rear engagement grooves are enclosed to form a clamping channel through which the puncture member passes.

[0013] The beneficial effect of the above-mentioned further technical solution is that when the two rear clamps are engaged, the clamping channel formed by the two rear engagement grooves can clamp the puncture piece.

[0014] Furthermore, the first and second pins are aligned front to back and extend to form a shaft body, and the two rear clamps can slide synchronously relative to the shaft body in the front-back direction. The walls of the two front occlusal grooves are smooth surfaces, and the walls of the two rear occlusal grooves are friction surfaces.

[0015] The beneficial effects of the above-mentioned further technical solution are as follows: the front clamp and the rear clamp can play a certain supporting role through the shaft, thereby improving the stability of the entire front clamp and the rear clamp; the front engagement groove is a smooth surface, which can reduce the sliding resistance of the puncture piece relative to the front clamp, while the rear engagement groove is a friction surface, which can increase the sliding resistance of the puncture piece relative to the rear clamp.

[0016] Furthermore, the extrusion component includes a trigger, a first rack, a gear, and a second rack. The first and second racks are both disposed at the upper rear end of the base in the front-rear direction and are spaced apart in the vertical direction. Both racks can slide relative to the base in the front-rear direction. The second rack is located above the first rack, and their tooth groove sides are close to each other. The gear is rotatably disposed on the base and is located between the first and second racks. Both the first and second racks mesh with the gear. The second rack is located directly behind the rear clamp. When the trigger drives the first rack to move backward under the action of an external force, it drives the second rack to squeeze the rear clamp forward. When the external force is removed, the rear clamp moves backward, squeezing the second rack to move backward and driving the first rack and the trigger forward to reset. The trigger constitutes the trigger end, and the second rack constitutes the drive end.

[0017] The beneficial effect of the above-mentioned further technical solution is that when the trigger drives the first rack to move backward, the second rack moves forward to push the rear clamp forward. Similarly, when the second rack moves backward, it synchronously drives the first rack and the trigger to move forward to reset.

[0018] Furthermore, it also includes a third elastic element, the front end of the second rack has a pressing head, and the lower ends of the two rear clamps are both pressing slopes close to each other. The distance between the two pressing slopes gradually decreases from back to front. The front end of the pressing head gradually widens from front to back and can extend into the space between the two pressing slopes when moving forward. The pressing head constitutes the driving end. One end of the third elastic element is connected to the base body, and the other end of the third elastic element is connected to the trigger or the first rack. The elastic force of the third elastic element is used to drive the extrusion member to reset.

[0019] The beneficial effects of the above-mentioned further technical solution are as follows: In the initial stage of forward movement, the extrusion head can first extend between the lower ends of the two rear clamping ears and cooperate with the two extrusion inclined surfaces to push the rear clamp to move forward synchronously. Moreover, the greater the force between the second rack and the rear clamp, the greater the clamping force of the two rear clamping ears (therefore, when the rear clamp moves forward, its clamping force on the puncture piece will increase significantly). At the same time, when the rear clamp retracts backward under the action of the first elastic element, after the rear clamp is reset, the second rack can continue to retract under the action of the third elastic element until the extrusion head withdraws from between the two rear clamping ears and is fully reset.

[0020] Furthermore, the two rear clamps are respectively the first rear clamp and the second rear clamp. The first rear clamp and the second pin are rotatably connected, and the first rear clamp and the extrusion slope of the first rear clamp and the extrusion head are in contact with each other, with a margin for backward tilting. When the first rear clamp moves forward, it twists backward relative to the second rear clamp to increase the clamping force of the rear clamp on the puncture piece.

[0021] The beneficial effect of the above-mentioned further technical solution is that: when the puncture needle moves forward and penetrates into the tissue, the greater the resistance encountered by the puncture needle during its advance, the more the first clamp ear will twist slightly backward, and together with the second rear clamp ear, it will clamp the puncture piece, thereby further increasing the clamping force of the rear clamp on the puncture piece.

[0022] Furthermore, the seat includes a seat rod and a handle rod. The seat rod is arranged in the front-rear direction, and the front end of the seat rod constitutes the front end of the seat. The upper rear end of the seat rod protrudes upward to form a protrusion. The interior of the protrusion is hollow and the front end is open. The handle rod is vertically arranged at the lower rear end of the seat rod. The front clamp and the rear clamp are both arranged at the upper front end of the seat rod. The first rack, the gear, and the second rack are all arranged inside the protrusion. The lower end of the protrusion is provided with a sliding hole that runs vertically through the seat. The sliding hole is straight and distributed in the front-rear direction. The trigger is vertically arranged on the inner side of the corner of the seat rod and the handle rod, and its upper end passes through the sliding hole and extends to connect with the first rack.

[0023] The beneficial effects of the above-mentioned further technical solution are: its structure is simple and the entire piercing gun is similar to a gun shape, making it easier to hold and providing a better feel. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the puncture needle, puncture sheath, and puncture device as described in the prior art; Figure 2 This is a side view of the piercing gun and piercing element during assembly in an embodiment of the present invention; Figure 3 This is one of the elevation views of the piercing gun and piercing element during assembly in an embodiment of the present invention; Figure 4 for Figure 3 A partial schematic diagram; Figure 5 This is a second elevation view of the assembly of the piercing gun and the piercing component in an embodiment of the present invention; Figure 6 This is a rear view of the front and rear clamps in the clamping state according to an embodiment of the present invention; Figure 7 This is a rear view of the front and rear clamps in the open state in an embodiment of the present invention; Figure 8 This is one of the elevation views of the front clamp described in an embodiment of the present invention; Figure 9 This is a bottom view of the front and rear clamps in the clamping state and the rear clamp is reset, as described in this embodiment of the invention. Figure 10 This is a second elevation view of the front clamp described in an embodiment of the present invention; Figure 11 This is a front view of the rear clamp in the clamping state according to an embodiment of the present invention; Figure 12 This is a schematic diagram showing the engagement of the front clip and the rear clip on the same side in an embodiment of the present invention; Figure 13 This is a schematic diagram of two rear clamping ears holding the puncture member in an embodiment of the present invention; Figure 14 This is a schematic diagram of the assembly of the seat and the extrusion component in an embodiment of the present invention; Figure 15 This is a cross-sectional view of the seat and extrusion component assembled in an embodiment of the present invention; Figure 16 This is a schematic diagram of the extrusion head on the second rack extending between the two extrusion ramps on the two rear clamps in an embodiment of the present invention.

[0025] In the diagram: 1. Piercing gun; 11. Base; 111. Limiting pin; 1111. First limiting part; 112. Base rod; 1121. Protrusion; 1122. First screw hole; 1123. Second screw hole; 113. Handle rod; 114. Sliding hole; 12. Front clamp; 121. First pin; 1211. Second limiting part; 122. Second elastic element; 123. Front clamping lug; 1231. Front engagement groove; 1232. Limiting hole; 1233. Enclosing skirt; 12331. Abutment strip; 1234. First limiting groove; 1235. First protruding ring; 1236. Second limiting groove; 13. Rear... Clamp; 131, Second pin; 132, Rear clamping lug; 132a, First rear clamping lug; 132b, Second rear clamping lug; 1321, Rear engagement groove; 1322, Extrusion bevel; 1323, Second convex ring; 1324, Third limiting groove; 1325, Notch; 1326, Clearance part; 1327, Protrusion part; 1328, Clearance slide; 14, First elastic element; 15, Extrusion pusher; 151, Trigger; 152, First rack; 153, Gear; 154, Second rack; 1541, Extrusion head; 16, Third elastic element; 2, Puncture element; 21, Puncture sheath; 22, Puncture needle. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0029] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0030] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0031] like Figures 1-5As shown, this embodiment provides a puncture gun 1, which is used to clamp a puncture component 2 and push the puncture component 2 segment by segment into the tissue. The puncture component 2 includes a puncture sheath 21 and a puncture needle 22 sleeved in the puncture sheath 21. It includes a base 11, a front clamp 12, a rear clamp 13, a first elastic member 14, and a pushing member 15. The base 11 is arranged in a front-rear direction. The front clamp 12 and the rear clamp 13 are both located at the upper front end of the base 11, and the rear clamp 13 is located behind the front clamp 12. The rear clamp 13 can slide on the base 11 in a front-rear direction. Both the front clamp 12 and the rear clamp 13 are used to clamp the puncture component 2, and both can be switched to open or closed. When the rear clamp 13 moves forward, the clamping force on the puncture component 2 is greater than the clamping force of the front clamp 12. The rear clamp 13 pushes... When moving backward, the clamping force on the puncture member 2 is no greater than the clamping force on the puncture member 2 by the front clamp 12; one end of the first elastic member 14 is connected to the rear clamp 13, and the other end of the first elastic member 14 is connected to the seat 11 or the front clamp 12. The elastic force of the first elastic member 14 is used to drive the rear clamp 13 to tend to move backward relative to the seat 11 to reset; the push member 15 is disposed at the upper rear end of the seat 11. The push member 15 has a trigger end and a drive end. When the push member 15 is triggered by an external force, the drive end pushes the rear clamp 13 to overcome the elastic force of the first elastic member 14 to move forward. When the external force is removed, the rear clamp 13 slides backward relative to the puncture member 2 to reset under the elastic force of the first elastic member 14, and drives the push member 15 to tend to reset. Thus, the front clamp 12 and the rear clamp 13 can jointly hold the puncture member 2, then trigger the pusher 15, which pushes the rear clamp 13 forward. As the rear clamp 13 moves forward, its clamping force on the puncture member 2 increases, allowing the puncture member 2 to move forward relative to the front clamp 12 to penetrate deeper into the tissue. Once the rear clamp 13 has moved into position, the external force can be released, and the elastic force of the first elastic member 14 will cause the rear clamp 13 to move backward. The needle is moved until it is reset. During the backward movement of the rear clamp 13, the clamping force of the rear clamp 13 on the puncture element 2 is less than the clamping force of the front clamp 12 on the puncture element 2. Therefore, when the rear clamp 13 moves backward, it will not drive the puncture element 2 to move backward to retract in the tissue. At the same time as the rear clamp 13 moves backward, it also drives the pusher 15 to gradually reset, so as to facilitate continuous stimulation until the needle tip reaches the target site. Then, both the front clamp 12 and the rear clamp 13 are opened to separate the puncture gun 1 from the puncture element 2.

[0032] The ingenious feature of the piercing gun 1 described in this embodiment is that the clamping force of the rear clamp 13 on the piercing member 2 is variable according to the ease of movement, thereby enabling the entire piercing gun 1 to have the function of continuous firing.

[0033] In this embodiment, the piercing gun 1 only needs to switch the front clamp 12 and the rear clamp 13 to the open state when assembling and disassembling the piercing part 2.

[0034] In this embodiment, when the puncture piece 2 is clamped by the front clamp 12 and the rear clamp 13, it moves in the same direction as the forward movement of the rear clamp 13.

[0035] like Figures 2-12 As shown, in this embodiment, the front clamp 12 includes a first pin 121, a second elastic element 122, and two front clamping ears 123. The two front clamping ears 123 are vertically arranged and spaced apart along the left-right direction at the upper front end of the base 11. The first pin 121 is positioned between the two front clamping ears 123 along the front-rear direction, and the two front clamping ears 123 are rotatably connected by the first pin 121. The second elastic element 122 is positioned between the two front clamping ears 123 along the left-right direction. Located below the first pin 121, the two ends of the second elastic member 122 are respectively connected to the lower ends of the two front clamping ears 123. The upper ends of the two front clamping ears 123 are recessed on one side close to each other, and are aligned with each other. The elastic force of the second elastic member 122 is used to drive the two front clamping ears 123 to rotate around the first pin 121 until the upper ends fit together, so as to form a clamping channel through which the piercing member 2 passes through the two front clamping grooves 1231. This allows the middle parts of the two front clamping ears 123 to be rotatably connected by the first pin 121, while the second elastic element 122 is located between the lower ends of the two front clamping ears 123. At this time, the second elastic element 122 always applies a clamping force to the two front clamping ears 123, and when the front clamp 12 clamps the puncture piece 2, the clamping channel formed by the two front biting grooves 1231 is exactly for the puncture piece 2 to pass through. The function of the front clamp 12 is twofold: first, to clamp the puncture piece 2, and second, to straighten the puncture conditions.

[0036] like Figures 3-10 and Figure 12 As shown, in this embodiment, the second elastic element 122 is a spring. In this embodiment, the lower ends of the two front clips 123 are recessed on the side that are close to each other, and the two ends of the second elastic element 122 extend into the two first limiting grooves 1234 respectively, so that the second elastic element 122 is not easy to fall off the two front clips 123.

[0037] like Figure 4 , Figure 8 , Figure 10 and Figure 12As shown, in this embodiment, a first protruding ring 1235 is provided at the middle of the two front clamping ears 123 on one side close to each other. The inner hole of the first protruding ring 1235 extends through the front and back. One of the front clamping ears 123 may be provided with one first protruding ring 1235, while the other front clamping ear 123 may be provided with two first protruding rings 1235 that are aligned front and back and spaced apart in the front and back direction. The first protruding rings 1235 on the two front clamping ears 123 are staggered and allow the first pin 121 to pass through. At the same time, the diameter of the inner hole of the first protruding ring 1235 is equivalent to the shaft diameter of the first pin 121. This makes it difficult for the two front clamping ears 123 to be misaligned or shaken in the front and back direction.

[0038] like Figure 3 , Figure 4 , Figures 6-8 , Figure 10 , Figure 12 and Figure 14 As shown, in this embodiment, the front end of the seat 11 is provided with two limiting posts 111 that are spaced apart in the left-right direction. The lower ends of the two front clamping ears 123 each have an arc-shaped limiting hole 1232, and the arc center of the two limiting holes 1232 is coaxial with the first pin 121. The two limiting holes 1232 correspond one-to-one with the two limiting posts 111. The front end of each limiting post 111 passes through the corresponding limiting hole 1232, and the front end of each limiting post 111 has an enlarged first limiting part 1111. The two front clamping ears 123 are movably assembled to the upper front end of the seat 11 through the corresponding limiting posts 111. This allows the two front clamping ears 123 to engage with the limiting post 111 on the base 11 through the limiting hole 1232. This allows the two front clamping ears 123 to be assembled on the base 11 while also having a margin of movement relative to the base 11 (so that the front clamp 12 can clamp or open).

[0039] like Figure 3 , Figure 4 , Figures 6-8 , Figure 10 and Figure 12 As shown, in this embodiment, the arc angle corresponding to the limiting hole 1232 is approximately 30°. In this embodiment, the two front clamping ears 123 are symmetrically distributed on the upper end of the base 11. In this embodiment, the size of the first limiting part 1111 is such that it cannot pass through the limiting hole 1232. [In this embodiment, the two limiting posts 111 can be directly replaced by smooth bolts, in which case they are threadedly connected to the base 11 (the front end of the base 11 is provided with a matching first screw hole 1122), and its head constitutes the first limiting part 1111.]

[0040] like Figures 3-10 and Figure 12 As shown, in this embodiment, the upper periphery of the two front clamping ears 123 respectively has rearwardly extending enclosing skirts 1233. When the two front clamping ears 123 rotate to their upper ends and fit together, the seat body 11 and the two front clamping ears 123 enclose to form a rearwardly facing receiving groove. The rear clamp 13 is located between the two enclosing skirts 1233 and can move in the front-back direction between the two enclosing skirts 1233. Under the action of the front clamp 12, the rear clamp 13 opens or closes synchronously with the front clamp 12. When both the front clamp 12 and the rear clamp 13 are closed, the rear clamp 13 is located in the receiving groove. This ensures that the rear clamp 13 is always within the receiving groove formed by the two enclosing skirts 1233, and the opening or closing of the rear clamp 13 is affected by the front clamp 12 and is synchronized with the front clamp 12. That is, when the front clamp 12 opens, it will cause the rear clamp 13 to open, and when the front clamp 12 closes, it will cause the rear clamp 13 to close. The rear clamp 13 is kept closed under the action of the front clamp 12.

[0041] In this embodiment, the length of the enclosing skirt 1233 in the front-to-back direction is approximately 3-5 cm, such as... Figure 5 and Figure 12 As shown, when the rear clamp 13 is in the reset state in this embodiment, it blocks the rear end of the receiving groove. The rear clamp 13 moves about 2cm in the front-to-back direction within the receiving groove. That is, the pushing member 15 pushes the puncture member 2 into the tissue to a depth of about 2cm in each pushing cycle.

[0042] like Figure 6 , Figure 7 , Figure 9 and Figure 12 As shown, in this embodiment, the rear clamp 13 includes a second pin 131 and two rear clamping ears 132. The two rear clamping ears 132 are vertically arranged and spaced apart along the left-right direction at the upper end of the base 11, located between the two enclosing skirts 1233. The second pin 131 is arranged along the front-back direction between the two rear clamping ears 132, and the two rear clamping ears 132 are rotatably connected by the second pin 131. The upper ends of the two rear clamping ears 132 on their adjacent sides are each recessed with a through-groove and aligned rear engagement groove 1321. When the two rear clamping ears 132 rotate to their upper ends touching, the two rear engagement grooves 1321 are enclosed to form a clamping channel through which the puncture member 2 passes. This ensures that when the two rear clamps 13 are engaged, the clamping channel formed by the two rear engagement grooves 1321 can clamp the puncture member 2.

[0043] like Figure 6 , Figure 7 , Figures 9-12As shown, in this embodiment, the lower edges of the two surrounding skirts 1233 on the opposite side can be slightly turned inward to form abutment strips 12331, but this should not affect the normal opening or closing of the two front clamping ears 123. At the same time, the lower ends of the two rear clamping ears 132 are recessed on the opposite side to form clearance grooves 1328 that cooperate with the abutment strips 12331. The two abutment strips 12331 extend into the clearance grooves 1328 on the corresponding sides, so that the rear clamp 13 can maintain good synchronization with the front clamp 12 (mainly synchronous opening or synchronous closing). At the same time, when both the front clamp 12 and the rear clamp 13 are in the clamped state, the abutment strips 12331 cooperate with the clearance grooves 1328 to guide the back-and-forth sliding of the rear clamp 13 (it can also be considered that the rear clamp 13 is slidably connected to the front clamp 12 through the cooperation of the clearance grooves 1328 and the abutment strips 12331).

[0044] In this embodiment, when the front clamp 12 and the rear clamp 13 are in the clamping state, the two clamping channels are aligned front to back.

[0045] like Figure 6 , Figure 7 , Figure 11 and Figure 12 As shown, in this embodiment, a second protruding ring 1323 is provided at the middle of the two rear clamping ears 132 that are close to each other. The inner hole of the second protruding ring 1323 extends through the front and back. One of the rear clamping ears 132 may be provided with one second protruding ring 1323, while the other rear clamping ear 132 may be provided with two second protruding rings 1323 that are aligned front and back and spaced apart in the front and back direction. The second protruding rings 1323 on the two rear clamping ears 132 are staggered and allow the second pin 131 to pass through. This makes it difficult for the two rear clamping ears 132 to be misaligned or shaken in the front and back direction.

[0046] like Figures 9-12 As shown, in this embodiment, two first elastic elements 14 can be provided, both of which are springs. The two first elastic elements 14 are arranged along the front-to-back direction and distributed at intervals along the left-to-right direction between the front clamp 12 and the rear clamp 13. One first elastic element 14 is provided between the front clamp ear 123 and the rear clamp ear 132 on the same side. Each front clamp ear 123 has a second limiting groove 1236 at its rear upper end, and each rear clamp ear 132 has a third limiting groove 1324 at its front upper end. The second limiting groove 1236 and the third limiting groove 1324 on the same side are aligned front to back to allow the two ends of the corresponding first elastic elements 14 to be inserted. This makes it difficult for the first elastic elements 14 to fall off when assembled on the front clamp 12 and the rear clamp 13. The provision of two first elastic elements 14 can make the elastic force distribution on the two rear clamp ears 132 more even, thereby improving the stability of the entire piercing gun 1.

[0047] like Figure 9 , Figures 12-15 As shown, in this embodiment, the first pin 121 and the second pin 131 are aligned front to back and extend to form an integral shaft, and the two rear clamping ears 132 can slide synchronously relative to the shaft in the front-back direction; thus, the front clamp 12 and the rear clamp 13 can play a certain supporting role through the shaft, thereby making the entire front clamp 12 and the rear clamp 13 stable.

[0048] like Figure 9 , Figures 12-15 As shown, in this embodiment, the front end of the first pin 121 may be provided with an enlarged second limiting part 1211, so as to prevent the two front clamps 123 from coming loose from the first pin 121.

[0049] In this embodiment, the walls of the two front occlusal grooves 1231 are smooth surfaces, and the walls of the two rear occlusal grooves 1321 are friction surfaces (specifically, they may be evenly distributed with grooves). In this embodiment, the smooth surface of the front occlusal grooves 1231 can appropriately reduce the sliding resistance of the puncture member 2 relative to the front clamp 12, while the friction surface of the rear occlusal grooves 1321 can appropriately increase the sliding resistance of the puncture member 2 relative to the rear clamp 13.

[0050] like Figures 14-16 As shown, in this embodiment, the extrusion member 15 has a trigger 151, a first rack 152, a gear 153, and a second rack 154. The first rack 152 and the second rack 154 are both arranged along the front-rear direction at the upper rear end of the base 11 and are spaced apart along the vertical direction. Both can slide relative to the base 11 in the front-rear direction. The second rack 154 is located above the first rack 152, and their tooth grooves are close to each other. The gear 153 is rotatably mounted on the base 11 and located between the first rack 152 and the second rack 154. Both rack 152 and rack 154 mesh with gear 153. The second rack 154 is located directly behind the rear clamp 13. When the trigger 151 drives the first rack 152 to move backward under external force, it causes the second rack 154 to press the rear clamp 13 forward. When the external force is removed, the rear clamp 13 moves backward, pressing the second rack 154 backward and causing the first rack 152 and trigger 151 to move forward to their reset positions. The trigger 151 constitutes the trigger end, and the second rack 154 constitutes the drive end. This ensures that when the trigger 151 drives the first rack 152 backward, the second rack 154 moves forward to push the rear clamp 13 forward; similarly, when the second rack 154 moves backward, it simultaneously drives the first rack 152 and trigger 151 forward to their reset positions.

[0051] like Figure 16 As shown, in this embodiment, the piercing gun 1 further includes a third elastic element 16. The front end of the second rack 154 has a compression head 1541, and the lower ends of the two rear clamps 132 are on opposite sides of each other, forming compression ramps 1322. The distance between the two compression ramps 1322 gradually decreases from back to front. The front end of the compression head 1541 gradually widens from front to back and can extend into the space between the two compression ramps 1322 when moving forward. The compression head 1541 constitutes the driving end. One end of the third elastic element 16 is connected to the base 11, and the other end of the third elastic element 16 is connected to the trigger 151 or the first rack 152. The elastic force of the third elastic element 16 is used to drive the extrusion pusher 15 to reset. This allows the extrusion head 1541 to initially extend between the lower ends of the two rear clamping ears 132 during the initial forward movement, and cooperate with the two extrusion ramps 1322 to push the rear clamp 13 forward synchronously. Moreover, the greater the force between the second rack 154 and the rear clamp 13, the greater the clamping force of the two rear clamping ears 132 (thus, the clamping force of the rear clamp 13 on the piercing member 2 will increase significantly when it moves forward). At the same time, when the rear clamp 13 retracts backward under the action of the first elastic member 14, the rear clamp 13 returns to its original position first. However, at this time, the extrusion head 1541 is still located between the two extrusion ramps 1322. The second rack 154 can continue to retract under the action of the third elastic member 16 until the extrusion head 1541 withdraws from between the two rear clamping ears 132 and returns to its original position.

[0052] It should be noted that the extrusion head 1541 can only extend between the two extrusion ramps 1322 when the rear clamp 13 is in the clamping state.

[0053] In this embodiment, when both the rear clamp 13 and the extrusion pusher 15 are in the reset state, the extrusion head 1541 is located behind the rear clamp 13. That is, the extrusion head 1541 needs to exit between the two extrusion ramps 1322 so that both the front clamp 12 and the rear clamp 13 can switch to the open state normally. (If both the rear clamp 13 and the extrusion pusher 15 are in the reset state, and the extrusion head 1541 continues to remain between the two extrusion ramps 1322, the extrusion head 1541 will block the lower ends of the two rear clamp ears 132 from rotating to approach each other, so the two front clamp ears 123 cannot rotate to approach each other either, and therefore neither the front clamp 12 nor the rear clamp 13 can switch to the open state.) In other words, when both the rear clamp 13 and the extrusion pusher 15 are in the reset state, the extrusion head 1541 must exit between the two extrusion ramps 1322 for the front clamp 12 and the rear clamp 13 to switch to the open state normally.

[0054] like Figure 16 As shown, in the initial stage of forward movement, the second rack 154 of the extrusion pusher 15 in this embodiment needs to be inserted between the two extrusion inclined surfaces 1322 before it can drive the rear clamp 13 to move forward. That is, the rear clamp 13 only participates in the middle to keep the extrusion head 1541 moving synchronously.

[0055] like Figure 16 As shown, in this embodiment, the third elastic element 16 is a spring, the front end of which is connected to the rear end of the trigger 151 or the first rack 152, and the rear end of the third elastic element 16 is connected to the seat 11.

[0056] In this embodiment, the two rear clamps 132 are a first rear clamp 132a and a second rear clamp 132b. The first rear clamp 132a is rotatably connected to the second pin 131, and the contact point between the compression slope 1322 of the first rear clamp 132a and the compression head 1541 is reserved with allowance for backward tilting. When the first rear clamp 132a moves forward, it twists backward relative to the second rear clamp 132b to increase the clamping force of the rear clamp 13 on the puncture member 2. This means that when the clamp 13 moves forward and penetrates deeper into the tissue, the greater the resistance encountered by the puncture member 2, the more the first rear clamp 132a will twist slightly backward, working in conjunction with the second rear clamp 132b to clamp the puncture member 2, thereby further increasing the clamping force of the rear clamp 13 on the puncture member 2.

[0057] like Figure 6 , Figure 7 , Figures 11-13 As shown, in this embodiment, the inner hole of the second protruding ring 1323 on the first rear clamp ear 132a is a vertically arranged oval hole, which allows the first rear clamp ear 132a to have a range of movement for front and rear twisting when the second pin 131 passes through. However, the inner hole of the second protruding ring 1323 on the second rear clamp ear 132b is a round hole and cooperates with the second pin 131, which means that the second rear clamp ear 132b does not have a range of movement for front and rear twisting.

[0058] Figure 13 Figure A shows a schematic diagram of the two rear clamping lugs normally holding the puncture piece; Figure 13 Figure B shows a schematic diagram of the first rear clamp ear twisting backward relative to the second rear clamp ear and jointly clamping the puncture piece.

[0059] like Figure 6 , Figure 7 and Figure 11As shown, the upper ends of the two rear clamping ears 132 in this embodiment are slightly different, mainly in that the two rear clamping ears 132 have different upper ends of the corresponding rear occlusal grooves 1321. One of the rear clamping ears 13 has a relief portion 1326 at the corresponding position at the upper end, while the other rear clamping ear has a protrusion portion 1327 at the corresponding position at the upper end. The relief portion 1326 and the protrusion portion 1327 cooperate with each other so that when the rear clamp 13 is clamped, the protrusion portion 1327 and the relief portion 1326 are interlocked to improve the occlusal effect of the two rear clamping ears 132 on the puncture member 2. Preferably, the relief portion 1326 is located on the first rear clamping ear 132a, and the protrusion portion 1327 is located on the second rear clamping ear 132b.

[0060] like Figure 6 , Figure 7 , Figure 12 and Figure 16 As shown, in this embodiment, the lower ends of the two rear clips 132 are recessed with stepped notches 1325 on the side that are close to each other, while the sidewalls of the two notches 1325 that are far apart from each other are inclined surfaces, which constitute the extrusion slope 1322. The upper end of the notch 1325 on the first rear clip 132a has a gap of about 1mm with the upper end of the extrusion head 1541 to provide a margin for the first rear clip 132a to twist backward.

[0061] In this embodiment, the dimensions of the two rear occlusal grooves 1321 are slightly larger than the dimensions of the two front occlusal grooves 1231. This makes it so that under normal circumstances, the clamping force of the rear clamp 13 on the puncture member 2 is less than the clamping force of the front clamp 12 on the puncture member 2. However, under the compression of the compression head 1541, the clamping force of the rear clamp 13 on the puncture member 2 is much greater than the clamping force of the front clamp 12 on the puncture member 2.

[0062] like Figures 14-16As shown, in this embodiment, the seat 11 includes a seat rod 112 and a handle rod 113. The seat rod 112 is arranged in the front-rear direction, and the front end of the seat rod 112 constitutes the front end of the seat 11. The upper rear end of the seat rod 112 protrudes upward to form a protrusion 1121. The protrusion 1121 is hollow inside and open at the front end. The handle rod 113 is vertically arranged at the lower rear end of the seat rod 112. The front clamp 12 and the rear clamp 13 are both arranged on the seat rod 112. At the upper front end of the base rod 112, the first rack 152, the gear 153, and the second rack 154 are all disposed within the protrusion 1121. The lower end of the protrusion 1121 has a through-hole 114, which is a straight strip and distributed along the front-back direction. The trigger 151 is vertically disposed on the inner side of the corner between the base rod 112 and the handle rod 113, and its upper end passes through the through-hole 114 and extends to connect with the first rack 152. Its structure is simple, and it makes the entire piercing gun 1 resemble a gun, thus making it easier to hold and providing a better feel.

[0063] like Figure 14 and Figure 15 As shown, in this embodiment, the rear end of the second pin 131 can extend to be fixedly connected to the upper front end of the protrusion 1121 (similar to the limiting post 111, in this embodiment, the shaft composed of the first pin 121 and the second pin 131 can also be replaced by a smooth bolt. At this time, the upper front end of the protrusion 1121 is recessed with a matching second screw hole 1123, and the shaft is threadedly connected to the upper front end of the protrusion 1121). This makes the front clamp 12 and the rear clamp 13 more stable when assembled at the upper front end of the base 11.

[0064] like Figure 6 and Figure 7 As shown, in this embodiment, the front clamp 12 encloses the rear clamp 13. Therefore, to switch the front clamp 12 and the rear clamp 13 to open, it is only necessary to press the lower ends of the two front clamp ears 123 to overcome the elastic force of the second elastic member 122 and rotate them to be close to each other. The lower ends of the two rear clamp ears 132 are simultaneously rotated to be close to each other under the squeezing action of the lower ends of the two front clamp ears 123. At this time, the upper ends of the two front clamp ears 123 and the two rear clamp ears 132 rotate to be far apart to open. Similarly, when the two front clamp ears 123 rotate to be clamped at the upper end under the action of the second elastic member 122, the upper ends of the two rear clamp ears 132 are simultaneously clamped under the squeezing action of the upper ends of the two front clamp ears 123.

[0065] Preferred, such as Figure 15 As shown, in this embodiment, the third elastic element 16 is disposed between the trigger 151 and the handle lever 113, and the elastic force of the third elastic element 16 is used to drive the trigger 151 to move forward to complete reset.

[0066] like Figures 14-16 As shown, the handle 113 in this embodiment is also hollow inside, and the sliding hole 114 can extend to the front end of the handle 113 and be aligned with the trigger 151. The rear end of the trigger 151 can extend into the handle 113 through the sliding hole 114. The third elastic member 16 is hidden inside the handle 113.

[0067] The puncture gun 1 provided in this embodiment is easy to operate during operation. The second rack 154 moves synchronously and in opposite directions with the trigger 151 under the action of the first rack 152 and the gear 153. The amount of backward displacement and the speed of backward movement of the trigger 151 can be flexibly operated by the human. Therefore, the amount of forward displacement and the speed of forward movement of the rear clamp 13 can be flexibly controlled by the human. Consequently, the depth and speed of the puncture member 2 entering the tissue each time can be easily controlled by the human.

[0068] like Figure 15 As shown, in this embodiment, the third elastic element 16 can also prevent the first rack 152 and the second rack 154 inside the extrusion member 15 from shaking in the front-back direction when the extrusion member 15 is in the reset state. In this embodiment, when the extrusion member 15 is in the reset state, the two ends of the first rack 152 and the second rack 154 are almost aligned, and the gear 153 is located in the middle between the first rack 152 and the second rack 154.

[0069] like Figures 2-5 As shown, in this embodiment, the upper ends of the front clamp 12 and the rear clamp 13 are higher than the upper end of the protrusion 1121. When the front clamp 12 and the rear clamp 13 are in the clamping state, both clamping channels are located above the protrusion 1121, so that the protrusion 1121 will not obstruct the piercing member 2 from passing through the two clamping channels normally.

[0070] The puncture gun 1 described in this embodiment is characterized by its continuous firing function and the ability to advance in stages. The depth of each advance can be about 2 cm, and the speed of each advance can be manually controlled as needed. In addition, the greater the resistance encountered by the tip of the puncture piece 2 in the tissue, the greater the clamping force of the rear clamp 3 on the puncture piece 2.

[0071] The puncture gun provided in this embodiment is suitable for puncturing soft tissue, but not for puncturing bones.

[0072] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of the invention is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A puncture gun for gripping a puncture element (2) and pushing the puncture element (2) segment by segment into tissue, said puncture element (2) comprising a puncture sheath (21) and a puncture needle (22) sleeved within said puncture sheath (21), characterized in that, The device includes a seat (11), a front clamp (12), a rear clamp (13), a first elastic element (14), and a pushing element (15). The seat (11) is arranged in the front-back direction. The front clamp (12) and the rear clamp (13) are both located at the upper front end of the seat (11), and the rear clamp (13) is located behind the front clamp (12). The rear clamp (13) can slide on the seat (11) in the front-back direction. The front clamp (12) and the rear clamp (13) are both used to clamp the piercing element (2) and can be switched to open or close. When the rear clamp (13) moves forward, the clamping force on the puncture member (2) is greater than the clamping force on the puncture member (2) of the front clamp (12). When the rear clamp (13) moves backward, the clamping force on the puncture member (2) is not greater than the clamping force on the puncture member (2) of the front clamp (12). One end of the first elastic element (14) is connected to the rear clamp (13), and the other end of the first elastic element (14) is connected to the seat (11) or the front clamp (12). The elastic force of the first elastic element (14) is used to drive the rear clamp (13) to move backward relative to the seat (11) to reset. The pusher (15) is disposed at the upper rear end of the seat (11). The pusher (15) has a trigger end and a drive end. When the pusher (15) is triggered by an external force, the drive end pushes the rear clamp (13) to overcome the elastic force of the first elastic member (14) to move forward. When the external force is removed, the rear clamp (13) tends to slide backward relative to the puncture member (2) to reset under the elastic force of the first elastic member (14), and drives the pusher (15) to reset.

2. The piercing gun according to claim 1, characterized in that, The front clamp (12) includes a first pin (121), a second elastic element (122), and two front clamping ears (123). The two front clamping ears (123) are vertically arranged and spaced apart along the left-right direction at the upper front end of the base (11). The first pin (121) is positioned between the two front clamping ears (123) along the front-back direction, and the two front clamping ears (123) are rotatably connected via the first pin (121). The second elastic element (122) is positioned between the two front clamping ears (123) along the left-right direction and is positioned... Below the first pin (121), the two ends of the second elastic member (122) are respectively connected to the lower ends of the two front clamps (123). The upper ends of the two front clamps (123) are recessed on one side close to each other, and front bite grooves (1231) are provided that are connected from front to back and aligned with each other. The elastic force of the second elastic member (122) is used to drive the two front clamps (123) to rotate around the first pin (121) until the upper ends fit together, so as to form a clamping channel through which the piercing member (2) passes through the two front bite grooves (1231).

3. The piercing gun according to claim 2, characterized in that, The front end of the seat (11) is provided with two limiting posts (111) spaced apart in the left and right direction. The lower ends of the two front clamping ears (123) each have an arc-shaped limiting hole (1232), and the arc center of the two limiting holes (1232) is coaxial with the first pin (121). The two limiting holes (1232) correspond one-to-one with the two limiting posts (111). The front end of each limiting post (111) passes through the corresponding limiting hole (1232), and the front end of each limiting post (111) has an enlarged first limiting part (1111). The two front clamping ears (123) are respectively movably assembled to the upper front end of the seat (11) through the corresponding limiting posts (111).

4. The piercing gun according to claim 2, characterized in that, The upper periphery of the two front clamps (123) has a rearwardly extending enclosing skirt (1233). When the two front clamps (123) rotate to their upper ends and fit together, the seat (11) and the two front clamps (123) enclose to form a rearwardly facing receiving groove. The rear clamp (13) is located between the two enclosing skirts (1233) and can move in the front-back direction between the two enclosing skirts (1233). Under the action of the front clamp (12), the rear clamp (13) opens or closes synchronously with the front clamp (12). When both the front clamp (12) and the rear clamp (13) are closed, the rear clamp (13) is located in the receiving groove.

5. The piercing gun according to claim 4, characterized in that, The rear clamp (13) includes a second pin (131) and two rear clamp ears (132). The two rear clamp ears (132) are both vertically arranged and distributed at intervals along the left and right direction at the upper end of the seat (11) and located between the two enclosing skirts (1233). The second pin (131) is arranged in the front and back direction between the two rear clamp ears (132), and the two rear clamp ears (132) are rotatably connected by the second pin (131). The upper ends of the two rear clamp ears (132) on the side close to each other are recessed with rear engagement grooves (1321) that are through and aligned with each other. When the two rear clamp ears (132) are rotated to the point where their upper ends are in contact with each other, the two rear engagement grooves (1321) are enclosed to form a clamping channel through which the piercing member (2) passes.

6. The piercing gun according to claim 5, characterized in that, The first pin (121) and the second pin (131) are aligned front to back and extend to form a shaft body, and the two rear clamps (132) can slide synchronously relative to the shaft body in the front-back direction. The groove walls of the two front occlusal grooves (1231) are smooth surfaces, and the groove walls of the two rear occlusal grooves (1321) are friction surfaces.

7. The piercing gun according to claim 5 or 6, characterized in that, The extrusion member (15) has a trigger (151), a first rack (152), a gear (153), and a second rack (154). The first rack (152) and the second rack (154) are both arranged in the front-rear direction at the upper rear end of the base (11) and are spaced apart in the vertical direction. Both can slide relative to the base (11) in the front-rear direction. The second rack (154) is located above the first rack (152), and their tooth groove sides are close to each other. The gear (153) is rotatably mounted on the base (11) and is located between the first rack (152) and the second rack (154). 2) Both the second rack (154) and the second rack (154) mesh with the gear (153). The second rack (154) is located directly behind the rear clamp (13). When the trigger (151) drives the first rack (152) to move backward under the action of external force, it drives the second rack (154) to squeeze the rear clamp (13) to move forward. When the external force is removed, the rear clamp (13) moves backward, which squeezes the second rack (154) to move backward, and drives the first rack (152) and the trigger (151) to move forward to reset. The trigger (151) constitutes the trigger end, and the second rack (154) constitutes the drive end.

8. The piercing gun according to claim 7, characterized in that, It also includes a third elastic element (16), the front end of the second rack (154) has a pressing head (1541), and the lower ends of the two rear clamps (132) are close to each other on one side, which are pressing slopes (1322). The distance between the two pressing slopes (1322) gradually decreases from back to front. The front end of the pressing head (1541) gradually widens from front to back and can extend into the space between the two pressing slopes (1322) when moving forward. The pressing head (1541) constitutes the driving end. One end of the third elastic element (16) is connected to the seat (11), and the other end of the third elastic element (16) is connected to the trigger (151) or the first rack (152). The elastic force of the third elastic element (16) is used to drive the extrusion pusher (15) to reset.

9. The piercing gun according to claim 8, characterized in that, The two rear clamps (132) are the first rear clamp (132a) and the second rear clamp (132b). The first rear clamp (132a) is rotatably connected to the second pin (131) and the first rear clamp (132a) is in contact with the extrusion slope (1321) and the extrusion head (1541) with a margin for backward tilting. When the first rear clamp (132a) moves forward, it twists backward relative to the second rear clamp (132b) to increase the clamping force of the rear clamp (13) on the piercing member (2).

10. The piercing gun according to claim 7, characterized in that, The seat (11) includes a seat rod (112) and a handle rod (113). The seat rod (112) is arranged in the front-rear direction. The front end of the seat rod (112) constitutes the front end of the seat (11). The upper rear end of the seat rod (112) protrudes upward to form a protrusion (1121). The protrusion (1121) is hollow inside and open at the front end. The handle rod (113) is vertically arranged at the lower rear end of the seat rod (112). The front clamp (12) and the rear clamp (13) are both arranged on the seat rod. At the upper front end of (112), the first rack (152), the gear (153), and the second rack (154) are all located in the protrusion (1121). The lower end of the protrusion (1121) is provided with a sliding hole (114) that runs vertically through the top and bottom. The sliding hole (114) is straight and distributed along the front and back direction. The trigger (151) is vertically located on the inner side of the corner of the base rod (112) and the handle rod (113), and its upper end passes through the sliding hole (114) and extends to connect with the first rack (152).

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