CN118680640A

CN118680640A - Puncture biopsy needle

Info

Publication number: CN118680640A
Application number: CN202410815106.0A
Authority: CN
Inventors: 姚铠涛; 林建雄; 陈培星
Original assignee: Second Affiliated Hospital of Shantou University Medical College
Current assignee: Second Affiliated Hospital of Shantou University Medical College
Priority date: 2024-06-24
Filing date: 2024-06-24
Publication date: 2024-09-24

Abstract

The invention discloses a biopsy needle, which comprises a needle outer sleeve with a flat structure, wherein a pointed needle inner core is arranged inside the needle outer sleeve in a penetrating way, a fixing cap is fixedly arranged at the top end of the needle inner core, the fixing cap is in threaded connection with the needle outer sleeve, a sealing mechanism for automatically sealing the needle outer sleeve is arranged outside the needle outer sleeve, the sealing mechanism comprises a sealing plug with a hollow structure, and the needle outer sleeve and the sampling needle outer sleeve are matched for use. This puncture biopsy needle adopts novel structural design, utilizes connecting rope installation sealing plug in the outside of puncture needle outer sleeve, uses to plug into inside the puncture needle outer sleeve with the sealing plug, seals the puncture needle outer sleeve with the inside equidistant sealing membrane lamella that distributes of sealing plug to utilize reset spring to promote the sealing membrane lamella to reset after extracting the puncture needle inner core, thereby realize the automatic sealing to the puncture needle outer sleeve, avoid the air to be introduced into the patient.

Description

Puncture biopsy needle

Technical Field

The invention relates to the technical field of puncture biopsy needles, in particular to a puncture biopsy needle.

Background

A needle biopsy is a medical device used to perform tissue or cell biopsies. It generally consists of an elongated metal needle cannula and a movable inner core. In performing a biopsy, a physician inserts a penetrating biopsy needle into the skin or mucosa of a patient, and by controlling movement of the inner core, samples can be taken at the target tissue or cell site. Such techniques are commonly used to diagnose disease or to evaluate the nature of lesions. The biopsy needle can be used in medical institutions such as hospitals or clinics, and is a common diagnostic tool.

In the prior art, chinese patent with publication number CN110537939A discloses an integrated puncture biopsy needle. The biopsy needle comprises an outer sleeve and a puncture needle rod, and is structurally characterized in that the tail end of the outer sleeve is provided with a sleeve handle, a central through hole of the outer sleeve penetrates through the sleeve handle, the front end of the outer sleeve is provided with a serrated cutting edge, and a puncture hole communicated with the central through hole is formed in the pipe wall, close to the front end, of the outer sleeve; the puncture needle rod consists of a needle rod and a needle rod handle, wherein the needle rod handle is fixed at the tail end of the needle rod, and the front end of the needle rod is provided with a conical cutting edge; the length of the needle bar is greater than that of the outer sleeve, and the needle bar can be tightly attached to the inner wall of the outer sleeve in the central through hole of the outer sleeve to move, so that the needle bar has the advantages of simple structure, convenience in operation, high working efficiency, accurate sampling, sufficient sampling amount and capability of effectively extracting tissues to be detected.

The above-mentioned device inserts the needle tubing into patient's body in the in-process of using to take out the tissue that probably takes place the pathological change in patient's body, later carry out the biopsy operation, but need first puncture needle into patient's body in actual use, later insert the sample needle and take a sample, and the outside pjncture needle of pjncture needle needs to stay in patient's body and conveniently operate next time, pulls out the inside hollow state of sample needle pjncture needle this moment, does not seal, can introduce the air into patient's body and cause danger.

In the prior art, chinese patent publication No. CN11242147A discloses a puncture biopsy needle which comprises a needle bar and a handle. The needle bar comprises an inner needle core and an outer sleeve, the tail of the outer sleeve is fixed with a movable joint in a handle, a firing mechanism is arranged in the handle, and the firing mechanism consists of the movable joint, a buckle structure, an energy storage spring, a buckle structure and a trigger switch. The outer sleeve is fixed at the axial outer end of the movable joint, the axial inner end is in close contact with the energy storage spring, and the movable joint is stirred to backwards compress the energy storage spring to enter a to-be-fired state; the trigger switch comprises pushing handle and trigger probe, presses the pushing handle, drives trigger probe forward movement, and drive hasp structure makes buckle structure pine take off, and movable joint takes the outer tube forward movement, realizes cutting the function of getting the tissue, and simple structure, easy operating semi-automatic puncture biopsy needle, simultaneously, outer tube and interior needle core separation can realize multiple functions through the outer tube of remaining in the body, realize that a needle is multi-purpose.

The device is used in the process that the outer sleeve is inserted into the body of a patient, but the insertion depth is required to be determined according to the actual sampling condition in the actual use process, and generally, medical staff is assisted in judging the penetration depth according to the external scale marks, so that the medical staff is required to constantly observe the influence of the scale marks in the operation process, and the operation is inconvenient.

Disclosure of Invention

The invention aims to provide a puncture biopsy needle so as to solve the problem that the prior art cannot realize sealing, so that air is introduced into a body, and the puncture depth is inconvenient to judge.

In order to achieve the above purpose, the present invention provides the following technical solutions: the puncture biopsy needle comprises a puncture needle outer sleeve with a flat structure, a puncture needle inner core with a pointed end is penetrated inside the puncture needle outer sleeve, and the puncture biopsy needle further comprises:

The puncture needle comprises a puncture needle inner core, a puncture needle outer sleeve and a puncture needle fixing device, wherein a fixing cap is fixedly arranged at the top end of the puncture needle inner core, the fixing cap is in threaded connection with the puncture needle outer sleeve, a sealing mechanism for automatically sealing the puncture needle outer sleeve is arranged at the outer side of the puncture needle outer sleeve, and the sealing mechanism comprises a sealing plug with a hollow structure;

The puncture needle comprises a puncture needle outer sleeve, a sampling needle operating handle, a sampling needle inner core, a sampling groove, a control button, a hand-held ring, a limiting mechanism and a control button, wherein the puncture needle outer sleeve and the sampling needle outer sleeve are matched for use, the sampling needle outer sleeve penetrates into the puncture needle outer sleeve, the top end of the sampling needle outer sleeve is fixedly provided with the sampling needle operating handle, the sampling needle inner core is internally penetrated and provided with the sampling needle inner core, the bottom end of the sampling needle inner core is provided with the sampling groove, the sampling needle inner core is controlled to stretch out and draw back by the control button, meanwhile, the left side and the right side of the sampling needle operating handle are fixedly provided with the hand-held ring, and the outer side of the bottom of the sampling needle operating handle is provided with the limiting mechanism for limiting the extending length of the sampling needle outer sleeve;

The outer sleeve of the puncture needle is externally provided with a positioning mechanism for determining the puncture position, and the positioning mechanism comprises a positioning patch stuck on the surface of the skin of a patient.

Preferably, the sealing plug is made of soft rubber, and is connected to the outside of the outer sleeve of the puncture needle through a connecting rope, and is plugged into the inside of the top end of the outer sleeve of the puncture needle when in use.

Preferably, sealing membrane flaps which are distributed at equal intervals are rotatably arranged in the sealing plug, and a reset spring is fixedly arranged between the side surfaces of the sealing membrane flaps and the inner wall of the sealing plug.

Preferably, the sealing membrane flap is divided into a connecting sheet and a rubber sheet, the connecting sheet is made of hard plastic, and the rubber sheet is made of soft rubber which is bent at will.

Preferably, the limiting mechanism comprises a limiting ring which is sleeved outside the outer sleeve of the sampling needle in a sliding manner, a supporting rod for driving the limiting ring to move is fixedly arranged at the rear side of the limiting ring, and scale marks are arranged at equal intervals outside the outer sleeve of the sampling needle and the outer sleeve of the puncture needle.

Preferably, a penetrating sliding structure is formed between the support rod and a containing sliding groove formed in the sampling needle operating handle, a connecting column is slidably mounted on the side face of the sampling needle operating handle, and a pressing plate positioned outside the sampling needle operating handle is fixedly arranged at the top end of the connecting column.

Preferably, the connecting column is externally provided with an extrusion spring for pushing the connecting column to reset outwards, the bottom end of the connecting column is provided with a through groove, the through groove and the supporting rod mutually penetrate, and meanwhile, the inner side wall of the through groove is fixedly provided with a friction limiting block for extruding the supporting rod.

Preferably, the back of the positioning patch is provided with a medical adhesive tape for pasting and fixing, a butt joint sleeve is installed in the middle of the inside of the positioning patch in a penetrating way, and the butt joint sleeve is connected with the outer sleeve of the puncture needle in a penetrating way.

Preferably, the side surface of the butt joint sleeve is rotatably provided with a connecting pull rod positioned on the front surface of the positioning patch, and the bottom end of the connecting pull rod is rotatably connected with the hard movable magic tape.

Preferably, the movable magic tape is fixedly stuck between the fixed magic tape fixedly mounted on the front outer surface of the positioning tape, and the fixed magic tape is arranged into a strip-shaped structure for adjustment.

Compared with the prior art, the invention has the beneficial effects that: the puncture biopsy needle adopts a novel structural design, and the specific contents are as follows:

1. The sealing mechanism is arranged, a sealing plug is arranged outside the outer sleeve of the puncture needle by using a connecting rope, the sealing plug is plugged into the outer sleeve of the puncture needle when the puncture needle is used, and sealing membrane flaps distributed at equal intervals inside the sealing plug are used for sealing the outer sleeve of the puncture needle, so that the sealing membrane flaps are pushed to reset by using a reset spring after the inner core of the puncture needle is pulled out, the outer sleeve of the puncture needle is automatically sealed, and air is prevented from being introduced into a patient;

further, after the puncture needle outer sleeve penetrates into the body of a patient, the puncture needle inner core is pulled out, and then the sampling needle outer sleeve and the sampling needle inner core are inserted into the puncture needle outer sleeve together to realize sampling operation, so that biopsy operation can be performed on sampled tissues.

2. The limiting mechanism is arranged, and the position of the limiting ring is changed, so that the purpose of limiting the outer sleeve of the sampling needle can be achieved by using the limiting ring when the outer sleeve of the sampling needle is inserted into the outer sleeve of the puncture needle, namely, when the set penetration depth is achieved, the limiting ring contacts the outer sleeve of the puncture needle, so that the outer sleeve of the sampling needle cannot extend into the outer sleeve of the sampling needle any more, and medical staff is helped to rapidly judge whether the puncture reaches the set depth;

Further, the left side and the right side of the sampling needle operating handle are provided with pressing plates, an operator can enable the connecting column to move towards the inside of the sampling needle operating handle by pressing the pressing plates, at the moment, the friction limiting block at the bottom of the connecting column is separated from extrusion between the supporting rod, so that the supporting rod is loosened, at the moment, the operator can move the limiting ring, the position of the limiting ring is changed, and the purpose of adapting to different puncture depths is achieved.

3. The positioning mechanism is arranged, when the device is used, the outer sleeve of the puncture needle can be penetrated into the butt joint sleeve, then the positioning paste outside the butt joint sleeve is stuck on the skin of the puncture position of a patient by using a medical adhesive tape, so that the aim of auxiliary positioning is fulfilled, and the outer sleeve of the puncture needle is prevented from deviating;

Further, the front of the positioning patch is provided with a connecting pull rod, the inclination angle of the connecting pull rod is adjusted by changing the pasting position between the movable magic patch and the fixed magic patch, and the butt joint sleeve is pulled to incline by utilizing the angle change of the connecting pull rod, so that the puncture angle is changed, and an operator can conveniently sample tissues without positions.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the outer sleeve of the lancet of the present invention;

FIG. 3 is a schematic view of the structure of the outer sleeve of the sampling needle according to the present invention in the use state;

FIG. 4 is a schematic cross-sectional view of a sealing plug according to the present invention;

FIG. 5 is a schematic diagram of the connection relationship between the sealing plug and the outer sleeve of the puncture needle;

FIG. 6 is a schematic view of a sealing membrane flap of the present invention;

FIG. 7 is a schematic diagram of the front structure of the patch of the present invention;

FIG. 8 is a schematic cross-sectional view of a sample needle handle according to the present invention;

FIG. 9 is an enlarged schematic view of the structure of FIG. 8A according to the present invention;

FIG. 10 is a schematic view of the mounting relationship between the pressing plate and the connecting column according to the present invention.

In the figure: 1. an outer sleeve of the puncture needle; 2. an inner core of the puncture needle; 3. a fixing cap; 4. a sampling needle operating handle; 5. an outer sleeve of the sampling needle; 6. a sampling needle inner core; 7. a sampling groove; 8. a hand-held ring; 9. a control knob; 10. a sealing plug; 11. a connecting rope; 12. sealing the membrane flap; 1201. a connecting sheet; 1202. a rubber sheet; 13. a return spring; 14. positioning the patch; 15. a butt joint sleeve; 16. medical adhesive tape; 17. connecting a pull rod; 18. a movable magic tape; 19. fixing the magic tape; 20. a scale mark; 21. a limiting ring; 22. a support rod; 23. a storage chute; 24. pressing the plate; 25. a connecting column; 26. extruding a spring; 27. a through groove; 28. and friction limiting blocks.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one: referring to fig. 1-6, in order to solve the problem that air is introduced into a patient's body due to the fact that a conventional device cannot be sealed in the using process, the present embodiment provides the following technical scheme, and a sealing mechanism is provided, and the sealing mechanism is used for automatically sealing the outer sleeve 1 of the puncture needle by using a sealing membrane flap 12, which specifically discloses: the puncture needle comprises a puncture needle outer sleeve 1 with a flat structure, a puncture needle inner core 2 with a pointed end is arranged inside the puncture needle outer sleeve 1 in a penetrating way, a fixing cap 3 is fixedly arranged at the top end of the puncture needle inner core 2, the fixing cap 3 is connected with the puncture needle outer sleeve 1 through threads, a sealing mechanism for automatically sealing the puncture needle outer sleeve 1 is arranged outside the puncture needle outer sleeve 1, the sealing mechanism comprises a sealing plug 10 with a hollow structure, the puncture needle outer sleeve 1 and the sampling needle outer sleeve 5 are matched and used, the sampling needle outer sleeve 5 penetrates into the puncture needle outer sleeve 1, a sampling needle operating handle 4 is fixedly arranged at the top end of the sampling needle outer sleeve 5, a sampling needle inner core 6 is arranged inside the sampling needle outer sleeve 5 in a penetrating way, a sampling groove 7 is formed in the bottom end of the sampling needle inner core 6, the sampling needle inner core 6 is controlled to stretch out and draw back by a control button 9, meanwhile, a handheld ring 8 is fixedly arranged at the left side and the right side of the sampling needle operating handle 4, the sealing plug 10 is made of soft rubber material, the sealing plug 10 is connected to the outside the puncture needle outer sleeve 1 through a connecting rope 11, the sealing plug 10 is arranged inside the top end of the puncture needle outer sleeve 1, sealing plug 10 is internally provided with sealing membrane flaps 12 which are distributed at equal intervals, and a sealing membrane flap 12 is fixedly arranged between the sealing membrane flap 12 and the sealing membrane flap is arranged at the inner side of the sealing plug 1, and the sealing plug is provided with a soft rubber sheet 1202, and a soft rubber sheet is formed by a soft rubber material, a soft plastic sheet 1202, a soft plastic sheet is arranged between a soft plastic sheet is arranged.

When the device is used, firstly, the puncture needle assembly is taken out (at the moment, the puncture needle inner core 2 is inserted into the puncture needle outer sleeve 1), then the puncture needle inner core 2 is utilized to be inserted into a puncture position in a patient body together with the puncture needle outer sleeve 1, then the fixing cap 3 is rotated to take the puncture needle inner core 2 out of the puncture needle outer sleeve 1, the sealing plug 10 is plugged into the top end of the puncture needle outer sleeve 1 immediately after the puncture needle inner core 2 is taken out, the puncture needle outer sleeve 1 is sealed by using the sealing membrane flap 12 in the sealing plug 10, air is prevented from entering, then the sampling needle assembly is taken out, an operator holds the sampling needle operating handle 4 to insert the sampling needle outer sleeve 5 into the puncture needle outer sleeve 1, finally, the sampling needle outer sleeve 5 reaches a biopsy sampling position, then the sampling needle inner core 6 is ejected through the control button 9 to expose the sampling groove 7, so that tissues in the patient body are embedded into the sampling groove 7, then the sampling needle inner core 6 is retracted to achieve the purpose of sampling, the biopsy operation is carried out after the sampling, the sampling needle outer sleeve 5 is pulled out, and after the sampling is taken out, the sealing membrane flap 12 is reset under the pushing action of the reset spring 13, and the puncture needle outer sleeve 1 is automatically sealed.

Embodiment two: referring to fig. 8-10, in order to solve the problem that the operator determines the penetration depth inconvenient in the use process of the conventional device, the present embodiment provides the following technical scheme, which sets a limiting mechanism, and utilizes a limiting ring 21 in the limiting mechanism to block the outer sleeve 5 of the sampling needle from extending, so as to achieve the purpose of helping limiting, and specifically discloses: the outside of the bottom of the sampling needle operating handle 4 is provided with a limiting mechanism for limiting the extension length of the sampling needle outer sleeve 5, the limiting mechanism comprises a limiting ring 21 which is sleeved outside the sampling needle outer sleeve 5 in a sliding manner, a supporting rod 22 for driving the limiting ring 21 to move is fixedly arranged at the rear side of the limiting ring 21, scale marks 20 are arranged at equal intervals outside the sampling needle outer sleeve 5 and the puncture needle outer sleeve 1, a penetrating sliding structure is formed between the supporting rod 22 and a containing sliding groove 23 formed inside the sampling needle operating handle 4, a connecting column 25 is slidably arranged on the side face of the sampling needle operating handle 4, a pressing plate 24 positioned outside the sampling needle operating handle 4 is fixedly arranged at the top end of the connecting column 25, a pressing spring 26 for pushing the connecting column 25 to reset outwards is arranged outside the connecting column 25, a penetrating groove 27 is formed at the bottom end of the connecting column 25, the penetrating groove 27 and the supporting rod 22 are mutually penetrated, and a friction limiting block 28 for pressing the supporting rod 22 is fixedly arranged on the inner side wall of the penetrating groove 27.

When penetrating the sampling needle, firstly, an operator presses the pressing plate 24, so that the pressing plate 24 pushes the connecting column 25 to move towards the inside of the sampling needle operating handle 4, at the moment, the penetrating groove 27 moves relative to the supporting rod 22, so that the friction limiting block 28 in the penetrating groove 27 breaks away from the friction limiting between the connecting column and the supporting rod 22, then the operator moves the limiting ring 21 (after releasing the pressing plate 24, the connecting column 25 is reset under the pushing action of the pressing spring 26, so that the friction limiting block 28 carries out friction limiting on the supporting rod 22 again), the position of the limiting ring 21 is determined according to the scale mark 20 (the total length of the outer sleeve 5 of the sampling needle minus the extending length of the limiting ring 21 to obtain the depth of puncture), and when sampling puncture operation is carried out, the limiting ring 21 is utilized, so that the outer sleeve 5 of the sampling needle cannot extend into the depth of puncture again, and thus the operator can operate conveniently.

Embodiment III: referring to fig. 3 and 6, in order to solve the problem that an operator is inconvenient to change a sampling position in the using process of the conventional device, the present embodiment provides the following technical scheme, which sets a positioning mechanism, and limits the angle of the outer sleeve 1 of the puncture needle by using a limiting mechanism, so as to facilitate the sampling operation on tissues at different positions, and specifically discloses: the outside positioning mechanism that is used for confirming puncture needle outer sleeve 1 is provided with, positioning mechanism is including pasting the location subsides 14 at patient's skin surface, the location subsides 14 back is provided with the medical sticky tape 16 that is used for pasting fixedly, and the inside intermediate position of location subsides 14 runs through and installs butt joint sleeve 15, and pass through between butt joint sleeve 15 and the puncture needle outer sleeve 1 and connect, butt joint sleeve 15 side rotates installs and is located the positive connecting rod 17 of location subsides 14, and connect the rotation between connecting rod 17 bottom and the movable magic subsides 18 of stereoplasm, it is fixed to paste between the fixed magic subsides 19 of fixed mounting at the positive surface of location subsides 14, and fixed magic subsides 19 set up to be used for the rectangular shape structure of regulation.

After penetrating the puncture needle outer sleeve 1, penetrating the butt joint sleeve 15 outside, then sticking the positioning paste 14 on the skin of the puncture position of a patient by using the medical adhesive tape 16 to achieve the purpose of limiting the puncture needle outer sleeve 1, and changing the sticking position between the movable magic tape 18 and the fixed magic tape 19 at the corresponding position after one-time sampling is completed, thereby changing the angle of the connecting pull rod 17, enabling the connecting pull rod 17 to pull and change the angle of the butt joint sleeve 15, changing the puncture angle, and facilitating the sampling operation on tissues at different positions when an operator performs the next sampling operation.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a puncture biopsy needle, is including being flat mouthful of structure's pjncture needle outer sleeve (1), pjncture needle outer sleeve (1) inside run through be provided with pjncture needle inner core (2) of tip, its characterized in that still includes:

The puncture needle comprises a puncture needle inner core (2), a puncture needle outer sleeve (1) and a puncture needle sealing mechanism, wherein the top end of the puncture needle inner core (2) is fixedly provided with a fixing cap (3), the fixing cap (3) is in threaded connection with the puncture needle outer sleeve (1), the outer side of the puncture needle outer sleeve (1) is provided with the sealing mechanism for automatically sealing the puncture needle outer sleeve, and the sealing mechanism comprises a sealing plug (10) with a hollow structure;

The utility model discloses a puncture needle, including puncture needle outer sleeve (1), sampling needle outer sleeve (5), sampling needle operating handle (4), sampling needle inner core (6), sampling groove (7) are offered to sampling needle outer sleeve (5), sampling needle inner core (6) are controlled by control button (9) and are flexible, simultaneously sampling needle operating handle (4) left and right sides fixed mounting hand ring (8), sampling needle operating handle (4) bottom outside is provided with the stop gear who is used for restricting sampling needle outer sleeve (5) and stretches into length;

The puncture needle is characterized in that a positioning mechanism for determining the puncture position is arranged outside the puncture needle outer sleeve (1), and the positioning mechanism comprises a positioning patch (14) stuck on the skin surface of a patient.

2. The needle biopsy needle of claim 1, wherein: the sealing plug (10) is made of soft rubber, the sealing plug (10) is connected to the outside of the outer sleeve (1) of the puncture needle through a connecting rope (11), and the sealing plug (10) is plugged into the inside of the top end of the outer sleeve (1) of the puncture needle when in use.

3. The needle biopsy needle of claim 1, wherein: sealing membrane flaps (12) which are distributed at equal intervals are rotatably arranged in the sealing plug (10), and a reset spring (13) is fixedly arranged between the side surfaces of the sealing membrane flaps (12) and the inner wall of the sealing plug (10).

4. A needle biopsy according to claim 3, wherein: the sealing membrane flap (12) is divided into a connecting sheet (1201) and a rubber sheet (1202), the connecting sheet (1201) is made of hard plastic, and the rubber sheet (1202) is made of soft rubber which is bent at will.

5. The needle biopsy needle of claim 1, wherein: the limiting mechanism comprises a limiting ring (21) which is sleeved outside the outer sleeve (5) of the sampling needle, a supporting rod (22) for driving the limiting ring (21) to move is fixedly arranged at the rear side of the limiting ring, and scale marks (20) are arranged at equal intervals outside the outer sleeve (5) of the sampling needle and the outer sleeve (1) of the puncture needle.

6. The needle biopsy needle of claim 5, wherein: the support rod (22) and the containing chute (23) arranged in the sampling needle operating handle (4) form a penetrating sliding structure, the side surface of the sampling needle operating handle (4) is slidably provided with a connecting column (25), and the top end of the connecting column (25) is fixedly provided with a pressing plate (24) positioned outside the sampling needle operating handle (4).

7. The needle biopsy needle of claim 6, wherein: the connecting column (25) is externally provided with an extrusion spring (26) for pushing the connecting column to reset outwards, the bottom end of the connecting column (25) is provided with a penetrating groove (27), the penetrating groove (27) and the supporting rod (22) mutually penetrate, and meanwhile, the inner side wall of the penetrating groove (27) is fixedly provided with a friction limiting block (28) for extruding the supporting rod (22).

8. The needle biopsy needle of claim 1, wherein: the medical adhesive tape (16) used for pasting and fixing is arranged on the back of the positioning patch (14), a butt joint sleeve (15) is installed in the middle position inside the positioning patch (14) in a penetrating mode, and the butt joint sleeve (15) is connected with the outer sleeve (1) of the puncture needle in a penetrating mode.

9. The needle biopsy needle of claim 8, wherein: the side surface of the butt joint sleeve (15) is rotatably provided with a connecting pull rod (17) positioned on the front surface of the positioning patch (14), and the bottom end of the connecting pull rod (17) is rotatably connected with the hard movable magic patch (18).

10. The needle biopsy needle of claim 9, wherein: the movable magic tape (18) is fixedly stuck between the fixed magic tape (19) fixedly mounted on the front outer surface of the positioning tape (14), and the fixed magic tape (19) is of a strip-shaped structure for adjustment.