CN209916066U - Semi-automatic biopsy needle - Google Patents

Abstract

The utility model provides a semi-automatic type biopsy needle, including handle and shell, the handle includes the handle body, and the handle body and shell are buckled mutually and inside vacuole formation, are equipped with the needle tube seat in the cavity, are fixed with outer needle on the needle tube seat, wear to be equipped with interior needle in the outer needle, and the fixed needle file that is equipped with of interior needle one end sets up the eave tile that sets up on the needle file and links up with the needle tube seat on setting up the slot mutually, is equipped with the spring holder between needle file and the needle tube seat, and the spring holder is fixed on the handle, and the card is equipped with the spring between spring holder and the. The utility model provides a semi-automatic biopsy needle, which not only can select two levels of puncture depth of the inner needle, but also can realize semi-automatic operation through the matching of a needle seat and a needle tube seat; the operator can directly observe the depth mark by arranging a visual window; through setting up the hand rest, it is more steady to make the operator hold the needle when operating, simple structure, the operation of being convenient for, and the suitability is strong.

Description

Semi-automatic biopsy needle

Technical Field

The utility model belongs to the field of medical equipment, in particular to semi-automatic type biopsy needle.

Background

The biopsy needle is a medical appliance, is suitable for kidney, liver, lung, mammary gland, thyroid gland, prostate, pancreas, testis, uterus, ovary, body surface and other organs, and can be used for biopsy sampling and cell suction of cone tumor, unknown tumor and the like.

Clinically, when examining a patient with a tumor, a biopsy needle is used to remove a certain amount of tissue from the affected site in order to determine the nature of the tumor. The traditional method for biopsy of human tissue in the past is an operative incision method, and the tissue is taken out for biopsy through an operation, and the method has the defects of large wound area, high cost and great pain of patients. In recent years, the biopsy needle is mainly used for tissue biopsy and comprises a needle body, a needle seat, a needle core and the like, the needle core is inserted into the needle body from the needle seat, the end part of the needle core is provided with a needle groove, the end part of the needle body is made into an inclined plane to form a blade-shaped incision, the tissue is taken out by using the biopsy needle, the wound surface is small, the biopsy success rate is high, but the depth of the tissue cut in the biopsy process is not consistent, the required length of the biopsy needle is specific, and the practicability is not strong.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a semi-automatic type biopsy needle solves the not changeable, not strong problem of practicality of biopsy needle length that prior art exists.

The technical scheme of the utility model is that: the utility model provides a semi-automatic type biopsy needle, includes handle and shell, and the handle includes the handle body, and the handle body is buckled mutually and inside vacuole formation with the shell, is equipped with the needle tube seat in the cavity, is fixed with outer needle on the needle tube seat, wears to be equipped with interior needle in the outer needle, and the fixed needle file that is equipped with of interior needle one end sets up on the eave tile that sets up on the needle file and the needle tube seat and colludes mutually, is equipped with the spring holder between needle file and the needle tube seat, and the spring holder is fixed on the handle, blocks between spring holder and the needle tube seat and.

Preferably, a baffle I and a baffle II are arranged below the needle tube seat, a clamping back-off is arranged on the handle, and the baffle I or the baffle II abuts against the clamping back-off.

Preferably, the needle tube base is fixed with a depth mark, the shell is provided with a visual window, and the depth mark is arranged below the visual window.

Preferably, a safety bolt is arranged between the tail of the handle and the needle seat, and the safety bolt is clamped on the needle seat.

Preferably, the lower end of the safety plug is provided with an opening, the width of the opening is larger than the diameter of the spring seat, a groove is formed in the front of the safety plug, and the groove is clamped with the needle seat.

Preferably, the handle and the head of the shell are provided with hand supports which penetrate through the outer needle handle and are clamped with the shell.

Preferably, the inner needle is provided with a sampling groove.

The utility model discloses following beneficial effect has: the needle seat is matched with the needle tube seat, so that the inner needle can select the two-gear puncture depth; the operator can directly observe the depth mark by arranging a visual window; through setting up the hand rest, it is more steady to make the operator hold the needle when operating, simple structure, the operation of being convenient for, and the suitability is strong.

Drawings

FIG. 1 is a schematic structural view of an initial state of a semi-automatic biopsy needle according to an embodiment of the present invention;

FIG. 2 is an exploded view of a semi-automatic biopsy needle according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the semi-automatic biopsy needle according to the embodiment of the present invention after shifting;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a schematic diagram of a back structure of a needle seat of a semi-automatic biopsy needle according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a safety plug in a semi-automatic biopsy needle according to an embodiment of the present invention.

In the figure: 1. a handle; 2. a needle seat; 3. a safety plug; 4. a spring seat; 5. a spring; 6. a housing; 7. marking the depth; 8. a needle tube base; 9. a sheath; 10. an inner needle; 11. an outer needle; 12. a hand rest; 13. a baffle plate I; 14. a baffle II; 15. clamping and reversing; 16. and (4) sampling the groove.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

A semi-automatic biopsy needle comprises a handle 1 and a shell 6, wherein the handle 1 comprises a handle body, a groove is formed above the handle body, a bulge is arranged below the shell 6, the bulge on the shell 6 is buckled with the groove on the handle body and forms a cavity inside the bulge, a needle tube seat 8 is arranged in the cavity, an outer needle 11 is fixed on the needle tube seat 8, an inner needle 10 penetrates through the outer needle 11, a needle seat 2 is fixedly arranged at one end of the inner needle 10, a hook head arranged on the needle seat 2 is hooked with a groove formed in the needle tube seat 8, a spring seat 4 is arranged between the needle seat 2 and the needle tube seat 8, the spring seat 4 is fixed on the handle 1, and a spring 5 is clamped between the spring seat 4 and the needle tube seat 8.

In order to adjust the gear, a baffle I13 and a baffle II 14 are arranged below the needle tube seat 8, a clamping reverse buckle 15 is arranged on the handle 1, and the baffle I13 or the baffle II 14 is abutted against the clamping reverse buckle 15.

In order to avoid the inner needle 10 from being launched by mistake, a safety catch 3 is arranged between the tail part of the handle 1 and the needle base 2, and the safety catch 3 is clamped on the needle base 2. The lower extreme of safety catch 3 is equipped with the opening, and the open-ended width is greater than the diameter of spring holder 4, and the preceding recess that is equipped with of safety catch 3, recess and needle file 2 joint.

In order to facilitate observation and more intuitive operation, the needle tube seat 8 is fixed with a depth mark 7, the shell 6 is provided with a visual window, and the depth mark 7 is arranged below the visual window.

In order to make the holding of the needle more stable when the doctor performs the operation, the handle 1 and the head of the shell 6 are provided with hand supports 12, and the hand supports 12 are clamped with the handle 1 and the shell 6 through the outer needle 11.

For the convenience of sampling, the inner needle 10 is provided with a sampling groove 16.

In order to protect the outer needle 11 and the inner needle 10, the outer needle 11 is provided with a sheath 9 at its periphery, said sheath 9 being clamped at one end to the handle 1 and the housing 6.

For the convenience of observation, the depth mark 7 is provided with numerical marks of '0', '1', '2', the marks correspond to the puncture depth gears, and the gears '1' and '2' respectively correspond to different puncture depths.

Before biopsy is carried out, the depth mark 7 in the visual window is displayed as 0, firstly, the safety catch 3 on the inner needle 10 is taken down, the needle base 2 is pulled backwards, the needle base 2 pulls the inner needle 10 to move backwards, meanwhile, the hook head is hooked with the groove, the hook head pulls the needle base 8 to slide backwards, the outer needle 11 on the needle base 8 also slides backwards, the baffle II 14 on the needle base 8 is clamped with the clamping back-off 15, the depth mark 7 in the visual window is displayed as 2, and the spring 5 is compressed; when biopsy is performed, the sheath 9 is taken down, the hand support 12 is arranged at the front ends of the handle 1 and the shell 6, the handle 1 is held by hand, the hand support 12 is held by hand, the outer needle 11 is moved to the right front of the biopsy position, the needle seat 2 is pushed forwards, the inner needle 10 is leaked out, the biopsy position is punctured, the tissue to be detected is filled in the sample groove 16 on the inner needle, meanwhile, the hook head slides forwards in the groove and sequentially passes through the baffle I13 and the baffle II 14, when the inner needle 10 is pushed to the foremost end, the hook head pushes the reverse buckle clamping position 15, the baffle II 14 is separated from the reverse buckle clamping position 15, the spring 5 is opened to drive the needle tube seat 8 to rapidly launch forwards, the needle tube seat 8 drives the outer needle 11 to launch forwards, the outer needle 11 enters a biopsy part to cut sample tissues in the sample groove 16, the sample tissues are packaged in the sample groove 16 of the inner needle 10 by the outer needle 11, and finally the handle 1 is held by hands to pull out the outer needle 11 and the inner needle 10. When the needle base 2 is pulled backwards until the depth mark 7 is 2, the clamping reverse buckle 15 on the handle 1 is clamped with the baffle II 14 again, the needle base 2 is pushed forwards slightly, the sampling groove 16 is exposed, and the sampled tissue sample is taken out.

The utility model provides a semi-automatic biopsy needle, which can not only select two levels of puncture depth of the inner needle, but also realize semi-automatic operation through the mutual matching of the needle seat and the needle tube seat; the operator can directly observe the depth mark by arranging a visual window; by arranging the safety plug, the mistaken emission before biopsy is avoided; the hand support is arranged, so that the needle holding of an operator is more stable during operation, the structure is simple, the operation is convenient, and the applicability is strong.

Claims (7)

1. A semi-automatic biopsy needle, comprising: including handle (1) and shell (6), handle (1) includes the handle body, the handle body and shell (6) looks lock and inside vacuole formation, be equipped with needle tube seat (8) in the cavity, be fixed with outer needle (11) on needle tube seat (8), wear to be equipped with interior needle (10) in outer needle (11), interior needle (10) one end is fixed and is equipped with needle file (2), it links to each other to set up the slot on eave tile that sets up on needle file (2) and needle tube seat (8), is equipped with spring holder (4) between needle file (2) and needle tube seat (8), spring holder (4) are fixed on handle (1), and the card is equipped with spring (5) between spring holder (4) and needle tube seat (8).

2. A semi-automatic biopsy needle according to claim 1, wherein: be equipped with baffle I (13) and baffle II (14) below syringe seat (8), be equipped with screens back-off (15) on handle (1), baffle I (13) or baffle II (14) and screens back-off (15) butt.

3. A semi-automatic biopsy needle according to claim 1, wherein: the needle tube seat (8) is fixed with a depth mark (7), the shell (6) is provided with a visual window, and the depth mark (7) is arranged below the visual window.

4. A semi-automatic biopsy needle according to claim 1, wherein: a safety plug (3) is arranged between the tail of the handle (1) and the needle base (2), and the safety plug (3) is clamped on the needle base (2).

5. A semi-automatic biopsy needle according to claim 4, wherein: the lower extreme of safety plug (3) is equipped with the opening, the open-ended width is greater than the diameter of spring holder (4), and the preceding recess that is equipped with of safety plug (3), recess and needle file (2) joint.

6. A semi-automatic biopsy needle according to claim 1, wherein: the head of handle (1) and shell (6) is equipped with hand rest (12), hand rest (12) pass outer needle (11) and handle (1) and shell (6) joint.

7. A semi-automatic biopsy needle according to claim 1, wherein: the inner needle (10) is provided with a sampling groove (16).

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