A one-button continuous firing fully automatic biopsy needle

Abstract

The present invention belongs to the technical field of medical detection tools or equipment, and in particular relates to a one-button continuous firing fully automatic biopsy needle. It comprises a syringe, a needle core, and a control mechanism; the control mechanism comprises a syringe connecting assembly, a needle core connecting assembly, a firing rod, a front sliding member, a rear sliding member, a first transverse spring, a second transverse spring, and a guide rod; the guide rod is arranged inside the mounting tube; the syringe connecting assembly comprises a front collar and a syringe pressing cap; the needle core connecting assembly comprises a rear collar and a needle core pressing cap. The one-button continuous firing fully automatic biopsy needle of the present application adopts a press-driven, spring-loaded, one-button firing method, is easy to operate, and moves quickly. It utilizes multiple limit and guide and restriction structure-related control, and the overall structural strength is high, the movement stability is good, and it can effectively ensure the stability and safety of the puncture tool, improve the efficiency of the puncture work, and reduce the probability of misoperation or tool problems.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical detection tools or equipment, and in particular relates to a one-button continuous firing fully automatic biopsy needle. Background Art

[0002] A biopsy needle is a medical tool used to obtain samples of a patient's diseased tissue or structure for case analysis and diagnosis. During use, the operator needs to insert the needle core into the tissue or structure to be sampled, use the special receiving cavity on the needle core to intercept the diseased tissue, and then push the syringe forward. During the forward movement of the syringe, the edge of the syringe is used to cut the tissue structure near the receiving cavity, so that part of the sample is intercepted and retained in the receiving cavity, and finally the needle core and needle tube are removed.

[0003] The patient's normal physiological activities are accompanied by continuous physiological movements of tissues and blood vessels, which may lead to excessive squeezing or cutting of tissues and puncture needles during puncture, causing bleeding or injury. Especially when puncturing organs such as the heart and lungs, which have large and frequent movements, the operator needs to have excellent psychological quality and professional level to ensure that the puncture work can be completed quickly and efficiently. At present, some automatic puncture needles have appeared on the market, which can replace the operator to realize the control of part of the needle core and syringe movement, but their movement efficiency and stability are often difficult to take into account, and their performance is uneven, which cannot effectively guarantee that the operator can complete the puncture work efficiently and safely. Summary of the Invention

[0004] The purpose of the present invention is to provide a one-button continuous firing fully automatic biopsy needle based on actual needs, which has good structural stability, smooth movement of the needle core and syringe, can complete the puncture operation in one go with one-button firing during surgery, has good position maintenance ability throughout the entire operation, and has good safety and operating efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A one-button continuous firing fully automatic biopsy needle comprises a syringe 1, a needle core 2, a mounting cylinder 3 and a control mechanism disposed inside the mounting cylinder 3;

[0007] The control mechanism includes: a syringe connecting assembly, a needle core connecting assembly, a firing rod 34, a front sliding member 35, a rear sliding member 36, a first transverse spring 37, a second transverse spring 38, and a guide rod 39;

[0008] The guide rod 39 is provided inside the mounting tube 3; an isolation section 39a is provided in the middle of the guide rod 39;

[0009] The syringe connection assembly includes a front collar 30 and a syringe pressing cap 31; the front collar 30 can be slidably sleeved on the front end of the guide rod 39, and the front collar 30 is provided with a syringe mounting hole 30k, into which the rear end of the syringe 1 is inserted; the front collar 30 is provided with a protruding first protrusion 30a, and the rear side of the first protrusion 30a is provided with a first extrusion slope 30b; the rear end of the syringe pressing cap 31 is connected to the front collar 30, and the front end extends from the front end of the mounting cylinder 3;

[0010] The needle core connecting assembly includes a rear collar 33 and a needle core pressing cap 32; the rear collar 33 can be slidably sleeved on the rear end of the guide rod 39, and the rear collar 33 is provided with a needle core mounting hole 33k coaxial with the syringe mounting hole 30k; the needle core 2 is inserted into the needle core mounting hole 33k, and the front end is inserted into the syringe 1; the rear collar 33 is provided with a linkage rod 330, the front end of the linkage rod 330 extends to the rear side of the needle core pressing cap 32, the middle part of the linkage rod 330 is provided with a triangular extrusion portion 33b protruding upward, and the rear end of the linkage rod 330 is provided with a second protrusion 33a; the rear end of the needle core pressing cap 32 is connected to the rear collar 33, and the front end extends from the mounting barrel 3;

[0011] The first transverse spring 37 is sleeved on the guide rod 39, and the front end thereof abuts against the front collar 30 to press it toward the front inner wall of the mounting tube 3;

[0012] The second transverse spring 38 is sleeved on the guide rod 39, and the front end abuts against the rear collar 33 to press it toward the isolation section 39a;

[0013] The front sliding member 35 is mounted on the inner wall of the mounting tube 3 and is located between the isolation section 39a and the front collar 30. A first vertical spring 40 is provided on the upper side of the front sliding member 35. The lower end of the first vertical spring 40 presses the front sliding member 35 toward the linkage rod 330.

[0014] The rear sliding member 36 is mounted on the inner wall of the mounting tube 3 and is located behind the rear collar 33. A third protrusion 360 is provided at the lower end of the rear sliding member 36. A second extrusion slope 36a is provided on the front side of the rear sliding member 36, and a third extrusion slope 36b is provided on the rear side.

[0015] The firing rod 34 is slidably disposed in the mounting tube 3 , and the firing rod 34 extends forward to the lower side of the rear sliding member 36 ;

[0016] A second vertical spring 41 is provided on the upper side of the rear sliding member 36 , and the lower end of the second vertical spring 41 presses against the rear sliding member 36 to press it toward the firing rod 34 .

[0017] In a further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle, the front side of the first protrusion 30a is provided with a first vertical positioning surface 30s for docking and positioning with the rear side of the syringe pressing cap 31;

[0018] The front side of the second protrusion 33a is provided with a second vertical positioning surface 33d for docking with the rear sliding member 36, and the rear side of the rear sliding member 36 is correspondingly provided with a third vertical positioning surface 36s;

[0019] The front inner wall of the mounting tube 3 is provided with a front limiting wall surface 3a for blocking the front collar 30 , and the rear inner wall is provided with a rear limiting wall surface 3b for blocking the rear collar 33 .

[0020] As a further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle, a positioning column 3z for supporting the first vertical spring 40 and the second vertical spring 41 and a guide column 3t for controlling the sliding direction of the front sliding member 35 and the rear sliding member 36 are provided on the inner wall of the mounting tube 3.

[0021] As a further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle, the rear end of the firing rod 34 extends backward to the rear opening of the mounting barrel 3 to form a firing button 34n.

[0022] A further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle is that the firing rod 34 is provided with an auxiliary control arm 34a;

[0023] A strip-shaped control hole 3e extending along the central axis is provided on the outer wall of the mounting tube 3. A control button 3c slidable along the front-rear direction is provided in the strip-shaped control hole. The control button 3c is connected to the auxiliary control arm 34a.

[0024] In a further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle, the lower edge of the front collar 30 protrudes downward to form a front connecting portion 30j, the syringe mounting hole 30k is provided in the front connecting portion 30j, and the first protrusion 30a is formed by the upper edge of the front collar 30 protruding upward.

[0025] The lower edge of the rear collar 33 protrudes downward to form a rear connecting portion 33j, and the needle core mounting hole 33k is provided in the rear connecting portion 33j; the linkage rod 330 is formed by the upper edge of the rear collar 33 protruding upward and then extending forward, and the second protrusion 33a is provided at the rear end of the linkage rod 330 and protrudes upward; the rear end of the needle core pressing cap 32 is connected to the rear collar 33, and the front end extends from the front end of the mounting tube 3.

[0026] As a further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle, a sliding groove 3d is provided at the bottom of the inner wall of the mounting tube 3, and the front connecting portion 30j and the rear connecting portion 33j slide back and forth along the sliding groove 3d.

[0027] As a further improvement or preferred embodiment of the aforementioned one-button continuous firing fully automatic biopsy needle, a vertical positioning rod 5 is provided in the mounting tube 3, and a through hole is correspondingly provided on the guide rod 39. The vertical positioning rod 5 is inserted into the through hole and both ends are fixed on the inner wall of the mounting tube 3.

[0028] Its beneficial effects are:

[0029] The one-button continuous firing fully automatic biopsy needle of the present application adopts a press-driven, spring-loaded, one-button firing method, which is easy to operate and quick in action. It utilizes multiple limit and guide and restriction structure associated controls. The overall structure has high strength and good action stability, which can effectively ensure the stability and safety of the puncture tool, improve the efficiency of the puncture work, and reduce the probability of misoperation or tool problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of a fully automatic biopsy needle that fires continuously with one button;

[0031] Figure 2 This is a cross-sectional view of a fully automatic biopsy needle that fires continuously with one button;

[0032] Figure 3 This is an oblique view of a fully automatic biopsy needle that fires continuously with one button;

[0033] Figure 4 This is the assembly diagram of a fully automatic biopsy needle that fires continuously with one button;

[0034] The reference numerals include:

[0035] Syringe 1, needle core 2, mounting cylinder 3, front limiting wall 3a, rear limiting wall 3b, control button 3c, sliding groove 3d, strip control hole 3e, guide column 3t, positioning column 3z, front collar 30, first protrusion 30a, first extrusion slope 30b, front connecting part 30j, syringe mounting hole 30k, first vertical positioning surface 30s, syringe pressing cap 31, needle core pressing cap 32, rear collar 33, second protrusion 33a, second vertical positioning surface 33d, Rear connecting part 33j, linkage rod 330, needle core mounting hole 33k, firing rod 34, auxiliary control arm 34a, firing button 34n, front sliding member 35, rear sliding member 36, second extrusion slope 36a, third extrusion slope 36b, third vertical positioning surface 36s, third protrusion 360, first transverse spring 37, second transverse spring 38, guide rod 39, isolation section 39a, first vertical spring 40, second vertical spring 41, vertical positioning rod 5. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to specific embodiments.

[0037] The one-button continuous firing fully automatic biopsy needle of this application is mainly used in various types of living puncture sampling operations to simplify the surgical operation process, reduce the difficulty of the operation, help medical staff to achieve one-button sampling operation, shorten the operation time, and improve the effectiveness of the operation.

[0038] The structure of the fully automatic biopsy needle with one-button continuous firing is as follows Figures 1 to 4 As shown, it mainly includes a needle cylinder 1, a needle core 2, a mounting cylinder 3 and a control mechanism arranged inside the mounting cylinder 3;

[0039] The control mechanism includes: a syringe connecting assembly, a needle core connecting assembly, a firing rod 34, a front sliding member 35, a rear sliding member 36, a first transverse spring 37, a second transverse spring 38, and a guide rod 39;

[0040] The syringe and needle core are designed based on the standardized structure of existing sampling needles, and their diameter, structural parameters, etc. are formulated based on the corresponding requirements and technical specifications of the puncture surgery.

[0041] This application mainly provides a control structure for controlling the movement of the syringe and the needle core. The specific structure of the control mechanism is as follows: Figure 2 shown.

[0042] The guide rod 39 is mainly used as a guide and control structure for the movement direction of the motion structure, and the rod structure is used to control the movement of the structure to prevent it from getting stuck or offset. At the same time, as an associated structure of the internal action structure, the coaxial motion scheme is used to ensure the consistency of the movement direction.

[0043] The guide rod 39 is arranged inside the mounting tube 3; an isolation section 39a is provided in the middle of the guide rod 39; during use, the guide rod is preferably kept in a fixed state. To prevent it from rotating or sliding back and forth, in this embodiment, a vertical positioning rod 5 is provided in the mounting tube 3, and a through hole is correspondingly provided on the guide rod 39. The vertical positioning rod 5 is inserted into the through hole and both ends are fixed on the inner wall of the mounting tube 3. The vertical positioning rod 5 can prevent the guide rod from rotating. In actual implementation, a buckle, a clamping structure or a plane can be provided on the inner wall of the mounting tube 3 to limit the vertical positioning rod 5.

[0044] The syringe connecting assembly is used to control and connect the syringe 2 and control the movement of the syringe 2. The syringe connecting assembly includes a front collar 30 and a syringe pressing cap 31. The front collar 30 can be slidably sleeved on the front end of the guide rod 39. The front collar 30 is provided with a syringe mounting hole 30k, and the rear end of the syringe 1 is inserted into the syringe mounting hole 30k. The front collar 30 is provided with a protruding first protrusion 30a, and the rear side of the first protrusion 30a is provided with a first extrusion slope 30b. The rear end of the syringe pressing cap 31 is connected to the front collar 30, and the front end extends from the front end of the mounting cylinder 3.

[0045] The needle core connecting assembly includes a rear collar 33 and a needle core pressing cap 32; the rear collar 33 can be slidably sleeved on the rear end of the guide rod 39, and the rear collar 33 is provided with a needle core mounting hole 33k coaxial with the syringe mounting hole 30k; the needle core 2 is inserted into the needle core mounting hole 33k, and the front end is inserted into the syringe 1; the rear collar 33 is provided with a linkage rod 330, the front end of the linkage rod 330 extends to the rear side of the needle core pressing cap 32, the middle part of the linkage rod 330 is provided with a triangular extrusion portion 33b protruding upward, and the rear end of the linkage rod 330 is provided with a second protrusion 33a; the rear end of the needle core pressing cap 32 is connected to the rear collar 33, and the front end extends from the mounting barrel 3;

[0046] The first transverse spring 37 is mounted on the guide rod 39, with its front end pressing against the front collar 30 to press it toward the front inner wall of the mounting tube 3; the second transverse spring 38 is mounted on the guide rod 39, with its front end pressing against the rear collar 33 to press it toward the isolation section 39a.

[0047] The front sliding member 35 is mounted on the inner wall of the mounting tube 3 and is located between the isolation section 39a and the front collar 30. A first vertical spring 40 is provided on the upper side of the front sliding member 35. The lower end of the first vertical spring 40 presses the front sliding member 35 toward the linkage rod 330.

[0048] The rear sliding member 36 is mounted on the inner wall of the mounting tube 3 and is located on the rear side of the rear ring 33; a third protrusion 360 is provided at the lower end of the rear sliding member 36, a second extrusion slope 36a is provided on the front side of the rear sliding member 36, and a third extrusion slope 36b is provided on the rear side; the firing rod 34 is slidable back and forth in the mounting tube 3, and the firing rod 34 extends forward to the lower side of the rear sliding member 36; a second vertical spring 41 is provided on the upper side of the rear sliding member 36, and the lower end of the second vertical spring 41 presses against the rear sliding member 36 to press it toward the firing rod 34.

[0049] In order to ensure the stability of the movement direction of the two vertical springs and simplify the structural design, a positioning column 3z for supporting the first vertical spring 40 and the second vertical spring 41 and a guide column 3t for controlling the sliding direction of the front sliding member 35 and the rear sliding member 36 are provided on the inner wall of the mounting tube 3.

[0050] To ensure that each structure can maintain a stable connection with the synthetic fiber system at each action node during operation, in this embodiment, a first vertical positioning surface 30s is provided on the front side of the first protrusion 30a for docking and positioning with the rear side of the syringe pressing cap 31; a second vertical positioning surface 33d is provided on the front side of the second protrusion 33a for docking with the rear sliding member 36, and a third vertical positioning surface 36s is provided on the rear side of the rear sliding member 36;

[0051] Among them, a front limiting wall surface 3a for blocking the front ring 30 is provided on the front inner wall of the installation tube 3, and a rear limiting wall surface 3b for blocking the rear ring 33 is provided on the rear inner wall.

[0052] For ease of operation, in this embodiment, the rear end of the firing rod 34 extends backward to the rear opening of the mounting tube 3 to form a firing button 34n.

[0053] At the same time, an auxiliary control arm 34a is provided on the firing rod 34;

[0054] A strip-shaped control hole 3e extending along the central axis is provided on the outer wall of the mounting tube 3. A control button 3c slidable along the front-rear direction is provided in the strip-shaped control hole. The control button 3c is connected to the auxiliary control arm 34a.

[0055] By blocking the control arm and the control button, a solution that is convenient for operation when holding the gun with a backhand grip can be provided in addition to the control method of pressing the trigger with a button at the rear end.

[0056] The lower edge of the front collar 30 protrudes downward to form a front connecting portion 30j, the syringe mounting hole 30k is provided in the front connecting portion 30j, and the first protrusion 30a is formed by the upper edge of the front collar 30 protruding upward;

[0057] The lower edge of the rear collar 33 protrudes downward to form a rear connecting portion 33j, and the needle core mounting hole 33k is provided in the rear connecting portion 33j; the linkage rod 330 is formed by the upper edge of the rear collar 33 protruding upward and then extending forward, and the second protrusion 33a is provided at the rear end of the linkage rod 330 and protrudes upward; the rear end of the needle core pressing cap 32 is connected to the rear collar 33, and the front end extends from the front end of the mounting tube 3.

[0058] In order to ensure the consistency and stability of the movement direction, a sliding groove 3d is provided at the bottom of the inner wall of the installation cylinder 3, and the front connecting part 30j and the rear connecting part 33j slide back and forth along the sliding groove 3d.

[0059] The following is the method for using the one-button continuous firing fully automatic biopsy needle of this application:

[0060] According to Figure 2 After the biopsy needle is assembled in the structure shown, sampling and sample removal are completed based on the following steps:

[0061] 1. Press the syringe pressing cap 31 and the needle core pressing cap 32 at the same time;

[0062] The syringe pressing cap 31 drives the front collar 30 to move backward, and the first extrusion slope 30b on the rear side of the first protrusion 30a on the front collar 30 squeezes the front slide 35, forcing it to move upward until the first protrusion 30a moves to the rear side of the front slide 35;

[0063] The pressing cap 32 of the pressing needle core drives the rear ring 33 to move backward, and the second protrusion 33a on the rear ring 33 presses the second extrusion slope 36a on the rear sliding member 36 to move it upward; until the second protrusion 33a moves to the rear side of the rear sliding member 36;

[0064] During this process, the first transverse spring 37, the second transverse spring 38, the first vertical spring 40, and the second vertical spring 41 are compressed;

[0065] 2. Release the syringe pressing cap 31 and the needle core pressing cap 32;

[0066] After release, the first vertical spring 40 forces the front slide 35 to move downward, and the first transverse spring 37 forces the front collar 30 to move forward, so that the front side of the first protrusion 30a abuts against the rear side of the front slide 35 and is locked. At this time, the syringe 2 is locked along with the front collar 30, and the first transverse spring 37 is charged.

[0067] The second vertical spring 41 forces the rear sliding member 36 to move downward, and the second transverse spring 38 forces the rear collar 33 to move forward, so that the front side of the second protrusion 33a abuts against the rear side of the rear sliding member 36 and is locked. At this time, the needle core and the collar 33 are locked, and the second transverse spring 38 is charged.

[0068] 2. Press the firing rod 34. The front end of the firing rod 34 squeezes the third extrusion slope 36b on the rear side of the third protrusion 360 to move the rear sliding member 36 upward. After moving up a certain distance, the second protrusion 33a disengages from the rear sliding member 36. The second transverse spring 38 is released and pushes the rear collar 33 to move forward quickly. The needle core 2 moves forward quickly and penetrates into the tissue. When the rear collar 33 approaches the isolation section 39a and is pressed against the front, the triangular extrusion portion 33b in the middle of the linkage rod 330 on the rear collar 33 squeezes the front sliding member 35 to move it upward. After moving up a certain distance, the first protrusion 30a disengages from the front sliding member 35. The first transverse spring 37 is released and pushes the syringe 1 to move forward quickly and penetrate into the tissue, completing the puncture.

[0069] 3. After confirming that the puncture is completed, move the sampling needle backward;

[0070] The syringe pressing cap 31 is pressed again, and the syringe pressing cap 31 drives the front collar 30 to move backward. The first extrusion slope 30b on the rear side of the first protrusion 30a of the front collar 30 presses the front slider 35, forcing it to move upward until the first protrusion 30a moves to the rear side of the front slider 35. At this time, the syringe 1 moves backward, exposing the needle core 2 inside the syringe 1 and the tissue sample. The front end of the sampling needle is placed in a fixative or other agent, and gently rinsed and shaken to separate the sample from the needle core 2 to complete the sampling.

[0071] It should be noted that, in actual use, according to the actual production method or process requirements, the above-mentioned basis can also be integrated and improved to simplify the structural design or reduce the manufacturing cost. For example, in actual implementation, the syringe and the corresponding front ring 30, and the needle core and the corresponding rear ring 33 can be integrated by integral processing and embedded in order to prevent the needle core and syringe from detaching or shaking back and forth.

[0072] Alternatively, a common method or structure may be used to further optimize the aforementioned basic scheme to improve the motion accuracy and stability. For example, in order to ensure that the firing rod 34, the linkage rod 330, the front and rear sliding members, and the front and rear rings maintain linear and unidirectional motion during movement, a guide strip may be provided between the inner wall of the mounting tube and the aforementioned action structure. Figure 2 A guide groove 9a is provided in the middle, or structures such as planes or guide grooves that support each other are set between the action structures.

[0073] Therefore, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents in combination with known technologies without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A one-button continuous firing fully automatic biopsy needle, comprising a syringe (1) and a needle core (2), characterized in that: It also includes a mounting cylinder (3) and a control mechanism disposed inside the mounting cylinder (3); The control mechanism includes: a syringe connecting assembly, a needle core connecting assembly, a firing rod (34), a front sliding member (35), a rear sliding member (36), a first transverse spring (37), a second transverse spring (38), and a guide rod (39); The guide rod (39) is arranged inside the installation cylinder (3); an isolation section (39a) is provided in the middle of the guide rod (39); The syringe connecting assembly comprises a front collar (30) and a syringe pressing cap (31); the front collar (30) can be slidably sleeved on the front end of the guide rod (39) in a forward and backward manner, the front collar (30) is provided with a syringe mounting hole (30k), and the rear end of the syringe (1) is inserted into the syringe mounting hole (30k); the front collar (30) is provided with a protruding first protrusion (30a), and the rear side of the first protrusion (30a) is provided with a first extrusion inclined surface (30b); the rear end of the syringe pressing cap (31) is connected to the front collar (30), and the front end extends from the front end of the mounting cylinder (3); The needle core connection assembly comprises a rear collar (33) and a needle core pressing cap (32); the rear collar (33) can be slidably sleeved on the rear end of the guide rod (39), and the rear collar (33) is provided with a needle core mounting hole (33k) coaxial with the syringe mounting hole (30k); the needle core (2) is inserted into the needle core mounting hole (33k), and the front end thereof is inserted into the syringe (1); a linkage rod (330) is provided on the rear collar (33), the front end of the linkage rod (330) extends to the rear side of the needle core pressing cap (32), the middle part of the linkage rod (330) is provided with a triangular extrusion portion (33b) protruding upward, and the rear end of the linkage rod (330) is provided with a second protruding portion (33a); the rear end of the needle core pressing cap (32) is connected to the rear collar (33), and the front end extends from the mounting cylinder (3); The first transverse spring (37) is sleeved on the guide rod (39), and the front end thereof abuts against the front collar (30) to press the front inner wall of the mounting cylinder (3); The second transverse spring (38) is sleeved on the guide rod (39), and the front end thereof abuts against the rear collar (33) to press it toward the isolation section (39a); The front sliding member (35) is mounted on the inner wall of the mounting cylinder (3) and is located between the isolation section (39a) and the front collar (30). A first vertical spring (40) is provided on the upper side of the front sliding member (35). The lower end of the first vertical spring (40) abuts against the front sliding member (35) to press it toward the linkage rod (330). The rear sliding member (36) is mounted on the inner wall of the mounting cylinder (3) and is located on the rear side of the rear collar (33); a third protrusion (360) is provided at the lower end of the rear sliding member (36); a second extrusion inclined surface (36a) is provided on the front side of the rear sliding member (36), and a third extrusion inclined surface (36b) is provided on the rear side; The firing rod (34) is slidably arranged in the mounting tube (3), and the firing rod (34) extends forward to the lower side of the rear sliding member (36); A second vertical spring (41) is provided on the upper side of the rear sliding member (36), and the lower end of the second vertical spring (41) abuts against the rear sliding member (36) to press it toward the firing rod (34); The lower edge of the front collar (30) protrudes downward to form a front connecting portion (30j), the syringe mounting hole (30k) is provided in the front connecting portion (30j), and the first protrusion (30a) is formed by the upper edge of the front collar (30) protruding upward; The lower edge of the rear collar (33) protrudes downward to form a rear connecting portion (33j), and the needle core mounting hole (33k) is provided in the rear connecting portion (33j); the linkage rod (330) is formed by the upper edge of the rear collar (33) protruding upward and then extending forward, and the second protruding portion (33a) is provided at the rear end of the linkage rod (330) and protrudes upward; the rear end of the needle core pressing cap (32) is connected to the rear collar (33), and the front end extends from the front end of the mounting tube (3); A sliding groove (3d) is provided at the bottom of the inner wall of the installation cylinder (3), and the front connecting portion (30j) and the rear connecting portion (33j) slide back and forth along the sliding groove (3d).

2. The one-button continuous firing fully automatic biopsy needle according to claim 1, characterized in that: The front side of the first protrusion (30a) is provided with a first vertical positioning surface (30s) for docking and positioning with the rear side of the syringe pressing cap (31); The front side of the second protrusion (33a) is provided with a second vertical positioning surface (33d) for docking with the rear sliding member (36), and the rear side of the rear sliding member (36) is correspondingly provided with a third vertical positioning surface (36s); A front limiting wall surface (3a) for blocking the front collar (30) is provided on the front inner wall of the installation cylinder (3), and a rear limiting wall surface (3b) for blocking the rear collar (33) is provided on the rear inner wall.

3. The one-button continuous firing fully automatic biopsy needle according to claim 1, characterized in that: A positioning column (3z) for supporting a first vertical spring (40) and a second vertical spring (41) and a guide column (3t) for controlling the sliding direction of a front sliding member (35) and a rear sliding member (36) are provided on the inner wall of the mounting cylinder (3).

4. The one-button continuous firing fully automatic biopsy needle according to claim 1, characterized in that: The rear end of the firing rod (34) extends backward to the rear opening of the mounting tube (3) to form a firing button (34n).

5. The one-button continuous firing fully automatic biopsy needle according to claim 1, characterized in that: The firing rod (34) is provided with an auxiliary control arm (34a); A strip-shaped control hole (3e) extending in the direction of the central axis is provided on the outer wall of the mounting cylinder (3), and a control button (3c) slidable in the front-back direction is provided in the strip-shaped control hole, wherein the control button (3c) is connected to the auxiliary control arm (34a).

6. The one-button continuous firing fully automatic biopsy needle according to claim 1, characterized in that: A vertical positioning rod (5) is provided in the installation tube (3), and a through hole is correspondingly provided on the guide rod (39). The vertical positioning rod (5) is inserted into the through hole and its two ends are fixed to the inner wall of the installation tube (3).

Images