Semi-automatic biopsy needle

Abstract

The present invention relates to a semi-automatic biopsy needle, comprising a handle, a shell, a spring seat, a needle tube seat, a needle holder, a spring, a safety rod and a pressing block. A travel groove is arranged on the front side of the safety rod, a slide is arranged on one side of the travel groove, a U-shaped installation groove which is slidably matched with the safety rod is arranged on the needle holder, the side wall of the installation groove is elastically arranged, the front end opening of the installation groove is smaller than the diameter of the safety rod, a limiting protrusion is arranged on the safety rod, and the pressing block is fixedly arranged at the tail end of the handle. When the safety rod is in a locked state, the needle holder is pressed, the slide of the safety rod abuts against the pressing block, the needle holder is limited, and firing cannot be completed. When the safety rod is pushed to unlock, the travel groove of the safety rod faces the pressing block, and the firing can be achieved by pressing the needle holder to complete the movement.

Description

Technical Field

[0001] The invention relates to the technical field of medical detection instruments and equipment, in particular to a semi-automatic biopsy needle. Background Art

[0002] Tissue tumors are diseases that seriously endanger human health and life. In recent years, the incidence rate has gradually increased, and the age of onset has gradually decreased. In recent years, the incidence of tumors has shown an increasing trend year by year. Therefore, the nature of tissue tumors needs to be diagnosed as early as possible. Correct diagnosis requires a combination of clinical, imaging and pathological steps. The continuous advancement of imaging technology has also greatly improved the accuracy of tumor diagnosis. However, for some tumors with insignificant imaging characteristics, pathological diagnosis plays a key role in the selection of treatment options. Pathological diagnosis through puncture biopsy is still an indispensable way in the diagnosis and treatment of tumors.

[0003] The semi-automatic biopsy needle is an important tool for puncture biopsy. The patent document with authorization announcement number CN209916066U provides a semi-automatic biopsy needle, including a handle and a shell. The handle includes a handle body. The handle body and the shell are buckled together to form a cavity inside. A needle tube seat is provided in the cavity. An outer needle is fixed on the needle tube seat. An inner needle is inserted in the outer needle. A needle seat is fixed at one end of the inner needle. A hook head provided on the needle seat is hooked with a groove provided on the needle tube seat. A spring seat is provided between the needle seat and the needle tube seat. The spring seat is fixed on the handle. A spring is clamped between the spring seat and the needle tube seat. A depth mark is fixed on the needle tube seat. A visual window is provided on the shell. A safety bolt is provided between the tail of the handle and the needle seat. The safety bolt is clamped on the needle seat. The safety bolt is clamped on the needle seat through a groove. The safety bolt is removed first when in use. Therefore, the semi-automatic biopsy needle with the above structure has a complex safety structure and is inconvenient to operate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a semi-automatic biopsy needle which has a simple structure and is easy to operate.

[0005] In order to solve the above technical problems, the semi-automatic biopsy needle provided by the present invention includes a handle, a shell, a spring seat, a needle tube seat, a needle holder, and a spring. The needle tube is fixedly arranged at the front end of the needle tube seat, the needle tube seat is slidably arranged at the front part of the handle, the front end of the needle holder extends into the handle and cooperates with the needle tube seat in transmission, the tail end of the spring seat abuts against the tail end of the handle, the spring is placed between the spring seat and the needle tube seat, the biopsy needle is fixedly arranged on the needle holder, the biopsy needle passes through the spring seat, the needle tube seat and the needle tube, and also includes a safety rod and a pressing block, the front side of the safety rod is provided with a travel groove, A slide is provided on one side of the travel groove, and a U-shaped installation groove which slides with the safety rod is provided on the needle holder, the side wall of the installation groove is elastically provided, the front end opening of the installation groove is smaller than the diameter of the safety rod, a limiting protrusion is provided on the safety rod, and the clamping block is fixedly provided at the tail end of the handle, and when the safety rod is in a locked state, the needle holder is pressed, and the slide of the safety rod abuts against the clamping block to limit the needle holder, making it impossible to complete the firing, and when the safety rod is pushed to unlock, the travel groove of the safety rod is opposite to the clamping block, and the firing can be achieved by pressing the needle holder to complete the movement.

[0006] Furthermore, a positioning block is protruding from the rear side of the bumper, and a positioning groove is provided at the rear end of the installation groove. When the bumper is assembled, the positioning block is inserted into the positioning groove, which facilitates the installation and positioning of the bumper.

[0007] Furthermore, the needle tube seat comprises an integrally formed sleeve and a seat body, a needle tube sleeve is nested in the sleeve, and the needle tube is fixedly connected to the needle tube sleeve.

[0008] Furthermore, a spring groove is provided at the upper end of the seat body, the front end of the spring is placed in the spring groove, and the rear end of the spring is plug-fitted with the front end of the spring seat.

[0009] Furthermore, a through hole suitable for the biopsy needle to pass through is provided at the center of the spring seat, a front baffle and a rear baffle are provided at the tail end of the spring seat, a slot is formed between the front baffle and the rear baffle, a limit block is provided at the tail end of the handle, a U-shaped groove is provided in the middle of the limit block, the slot is inserted into the U-shaped groove, and the spring seat is limited by the limit block.

[0010] Furthermore, a slide rod is provided at the front end of the needle holder, a slide groove is provided on the handle, an inclined groove is provided at the front end of the slide groove, buckles are provided on both sides of the inclined groove, and the slide rod is slidably matched with the slide groove.

[0011] Furthermore, a hook head is protruding from the front end of the slide rod, an inclined portion adapted to the inclined groove is provided at the bottom end of the hook head, a snap-fitting groove is provided at the lower end of the seat body, a hook groove communicating with the snap-fitting groove is provided at the tail end of the snap-fitting groove, and the hook head is inserted into the hook groove, so that when the needle holder moves backward, the slide rod and the hook head drive the needle tube holder to move.

[0012] Furthermore, a first inclined buckle and a second inclined buckle are provided in the middle of the two side walls of the buckling groove, and when the syringe rack moves to the first inclined buckle or the second inclined buckle is engaged with the buckle, the loading of the syringe rack is completed.

[0013] Furthermore, a shell slot is provided on the handle, and a shell buckle matched with the shell slot is provided on the shell, so as to facilitate assembly of the shell and the handle.

[0014] Furthermore, a push plate is provided at the rear end of the needle holder to facilitate the manipulation of the needle holder.

[0015] The technical effects of the invention are as follows: (1) Compared with the prior art, the biopsy needle of the present invention is provided with a safety rod that is slidably matched with the needle holder, and a travel groove is provided on the safety rod, so that when the travel groove cooperates with the clamping block, the travel restriction on the needle holder is released, thereby completing the firing; (2) The safety rod can be controlled by the sliding rod without being removed; limiting protrusions are provided at both ends of the safety rod to prevent the safety rod from detaching from the mounting groove when sliding; (3) The inclined groove is provided so that when the sliding rod moves to the inclined portion and contacts the inclined groove, the sliding rod can rise along the inclined groove, thereby completing the lifting of the needle tube holder, so that the first inclined buckle or the second inclined buckle of the needle tube holder is detached from the buckle, thereby completing the firing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a semi-automatic biopsy needle;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure after the shell is separated;

[0019] Figure 3 It is a schematic diagram of the exploded structure of a semi-automatic biopsy needle;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the needle holder;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the needle tube seat;

[0022] Figure 6 It is a three-dimensional structural diagram of the handle;

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the bumper;

[0024] Figure 8 yes Figure 6 A partial enlarged schematic diagram of the middle A area;

[0025] Fig. 9 It is a three-dimensional structural schematic diagram of the spring seat;

[0026] In the figure:

[0027] Handle 1, slide 11, limit block 12, U-shaped groove 13, housing slot 14, inclined slot 15, buckle 16, needle tube seat slot 17,

[0028] Needle tube seat 2, needle tube 21, sleeve 22, seat body 23, spring groove 24, buckle groove 25, first inclined buckle 26, second inclined buckle 27, hook groove 28,

[0029] Needle holder 3, biopsy needle 31, holder body 32, slide bar 33, hook head 34, inclined portion 35, mounting groove 36, mounting hole 37, push plate 38, positioning groove 39,

[0030] Shell 4, shell buckle 41, visual window 42, depth mark 43,

[0031] Spring seat 5, through hole 51, front baffle 52, rear baffle 53, slot 54,

[0032] Safety lever 6, positioning block 61, travel groove 62, slide 63, limiting protrusion 64,

[0033] Pressing block 7, spring 8. DETAILED DESCRIPTION

[0034] Example 1

[0035] like Figures 1 to 9 As shown, the semi-automatic biopsy needle of this embodiment includes a handle 1, a shell 4, a spring seat 5, a needle tube seat 2, a needle holder 3, and a spring 8. The needle tube seat 2 includes an integrally formed sleeve 22 and a seat body 23. A needle tube sleeve is nested in the sleeve 22, and the needle tube 21 is fixedly connected to the needle tube sleeve so that the needle tube 21 is fixedly set at the front end of the needle tube seat 2. A needle tube seat slide groove 17 is set at the front part of the handle 1, and the seat body 23 is movably matched with the needle tube seat slide groove 17 so that the needle tube seat 2 is slidably set at the front part of the handle 1; a spring groove 24 is set at the upper end of the seat body 23, and the front end of the spring 8 is placed in the spring groove 24, and the tail end of the spring 8 is plugged and matched with the front end of the spring seat 5 so that the spring 8 is placed between the spring seat 5 and the needle tube seat 2.

[0036] A through hole 51 suitable for the biopsy needle 31 to pass through is set in the center of the spring seat 5, a front baffle 52 and a rear baffle 53 are set at the tail end of the spring seat 5, a slot 54 is formed between the front baffle 52 and the rear baffle 53, a limit block 12 is set at the tail end of the handle 1, a U-shaped groove 13 is set in the middle of the limit block 12, the slot 54 is inserted into the U-shaped groove 13, and the spring seat 5 is limited by the limit block 12.

[0037] The needle holder 3 includes a holder body 32 and a slide bar 33 disposed at the front end of the holder body 32. A mounting hole 37 is disposed on the upper side wall of the holder body 32. The tail end of the biopsy needle 31 is fixedly disposed in the mounting hole 37. The front end of the biopsy needle 31 passes through the spring seat 5, the spring 8, the needle tube seat 2 and the needle tube 21. A push plate 38 is disposed at the tail end of the holder body 3 to facilitate the manipulation of the needle holder 3.

[0038] A slide groove 11 is provided on the handle 1 , an inclined groove 15 is provided at the front end of the slide groove 11 , buckles 16 are provided on both sides of the inclined groove 15 , and the slide rod 33 is slidably matched with the slide groove 11 .

[0039] A hook head 34 is protruding from the front end of the slide rod 33, and an inclined portion 35 adapted to the inclined groove 15 is provided at the bottom end of the hook head 34. A snap-fit ​​groove 25 is provided at the lower end of the seat body 23, and a hook groove 28 communicating with the snap-fit ​​groove 25 is provided at the tail end of the snap-fit ​​groove 25. The hook head 34 is inserted into the hook groove 28, so that when the needle holder 3 moves backward, the needle tube holder 2 is driven to move by the slide rod 33 and the hook head 34.

[0040] A first inclined buckle 26 and a second inclined buckle 27 are provided in the middle of the two side walls of the buckling groove 28. When the syringe rack 2 moves to the first inclined buckle 26 or the second inclined buckle 27 and is engaged with the buckle 16, the two-stage loading of the syringe rack 2 is completed.

[0041] The handle 1 is provided with a housing slot 14, and the housing 4 is provided with a housing buckle 41 adapted to the housing slot 14, so as to facilitate the assembly of the housing 4 and the handle 1. The handle 1 is provided with a viewing window 42, and a depth mark 43 is provided on one side of the viewing window 42 for observing the position of the needle tube holder 2.

[0042] The semi-automatic biopsy needle also includes a safety rod 6 and a clamping block 7. A travel groove 62 is set on the front side of the safety rod 6, and a slide 63 is set on one side of the travel groove 62. A U-shaped mounting groove 36 that slides with the safety rod 6 is set on the needle holder 3. The side wall of the mounting groove 36 is elastically set to facilitate the safety rod 6 to be inserted into the mounting groove 36. The front end opening of the mounting groove 36 is smaller than the diameter of the safety rod 6. A limiting protrusion 64 is set on the safety rod 6, and the clamping block 7 is fixedly set at the tail end of the handle 1. When the safety rod 6 is in a locked state, the needle holder 3 is pressed, and the slide 63 of the safety rod 6 abuts against the clamping block 7 to limit the needle holder 3 and make it impossible to complete the firing. When the safety rod 6 is pushed to unlock, the travel groove 62 of the safety rod 6 is opposite to the clamping block 7, and the firing can be achieved by pressing the needle holder 3 to complete the movement.

[0043] A positioning block 61 is protruded from the rear side of the bumper 6 , and a positioning groove 39 is provided at the rear end of the installation groove 36 . When the bumper 6 is assembled, the positioning block 61 is inserted into the positioning groove 39 , so as to facilitate the installation and positioning of the bumper 6 .

[0044] Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A semi-automatic biopsy needle, characterized in that: The needle holder comprises a handle, a shell, a spring seat, a needle tube seat, a needle stand, and a spring. The needle tube is fixedly arranged at the front end of the needle tube seat. The needle tube seat is slidably arranged at the front part of the handle. The front end of the needle stand extends into the handle and cooperates with the needle tube seat in transmission. The tail end of the spring seat abuts against the tail end of the handle. The spring is placed between the spring seat and the needle tube seat. A biopsy needle is fixedly arranged on the needle stand. The biopsy needle passes through the spring seat, the needle tube seat and the needle tube. The needle holder also comprises a safety rod and a pressing block. A travel groove is arranged at the front side of the safety rod. A slide is arranged at one side of the travel groove. A U-shaped mounting groove slidably cooperates with the safety rod is arranged on the needle stand. The side wall of the mounting groove The elastic arrangement has the front end opening of the mounting groove smaller than the diameter of the safety rod, a limiting protrusion is arranged on the safety rod, and the clamping block is fixedly arranged at the tail end of the handle. When the safety rod is in a locked state, the needle holder is pressed, and the slide of the safety rod abuts against the clamping block to limit the needle holder and make it impossible to fire. When the safety rod is pushed to unlock, the travel groove of the safety rod faces the clamping block, and the needle holder is pressed to complete the movement to achieve firing. The needle tube seat comprises an integrally formed sleeve and a seat body, a needle tube seat slide groove is arranged at the front of the handle, and the seat body and the needle tube seat slide groove are movably matched to make the needle tube seat slidably arranged at the front of the handle.

2. The semi-automatic biopsy needle according to claim 1, characterized in that: A positioning block is protrudingly arranged on the rear side of the bumper, and a positioning groove is arranged at the rear end of the mounting groove. When the bumper is assembled, the positioning block is inserted into the positioning groove.

3. The semi-automatic biopsy needle according to claim 2, characterized in that: A needle tube sleeve is nested in the sleeve, and the needle tube is fixedly connected to the needle tube sleeve.

4. The semi-automatic biopsy needle according to claim 2 or 3, characterized in that: A spring groove is arranged at the upper end of the seat body, the front end of the spring is placed in the spring groove, and the rear end of the spring is plug-fitted with the front end of the spring seat.

5. The semi-automatic biopsy needle according to claim 4, characterized in that: A through hole suitable for the biopsy needle to pass through is arranged at the center of the spring seat, a front baffle and a rear baffle are arranged at the tail end of the spring seat, a slot is formed between the front baffle and the rear baffle, a limit block is arranged at the tail end of the handle, a U-shaped groove is arranged in the middle of the limit block, the slot is inserted into the U-shaped groove, and the spring seat is limited by the limit block.

6. The semi-automatic biopsy needle according to claim 5, characterized in that: A slide bar is arranged at the front end of the needle holder, a slide groove is arranged on the handle, an inclined groove is arranged at the front end of the slide groove, buckles are arranged on both sides of the inclined groove, and the slide bar is slidably matched with the slide groove.

7. The semi-automatic biopsy needle according to claim 6, characterized in that: A hook head is protruding from the front end of the slide rod, an inclined portion adapted to the inclined groove is arranged at the bottom end of the hook head, a snap-fit ​​groove is arranged at the lower end of the seat body, a hook groove communicating with the snap-fit ​​groove is arranged at the tail end of the snap-fit ​​groove, and the hook head is inserted into the hook groove, so that when the needle holder moves backward, the slide rod and the hook head drive the needle tube holder to move.

8. The semi-automatic biopsy needle according to claim 7, characterized in that: A first inclined buckle and a second inclined buckle are provided in the middle of the two side walls of the buckling groove, and when the syringe rack moves to the first inclined buckle or the second inclined buckle is engaged with the buckle, the loading of the syringe rack is completed.

9. The semi-automatic biopsy needle according to claim 8, characterized in that: The handle is provided with a shell card slot, and the shell is provided with a shell buckle matched with the shell card slot.

10. The semi-automatic biopsy needle according to claim 9, characterized in that: A push plate is arranged at the rear end of the needle holder.

Images