CN214017631U

CN214017631U - Disposable semi-automatic biopsy needle

Info

Publication number: CN214017631U
Application number: CN202022463919.8U
Authority: CN
Inventors: 李睿
Original assignee: Tianjin Yihaoyong Precision Plastic Science & Technology Co ltd
Current assignee: Yihaoyong Tianjin Medical Instrument Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-08-24
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a disposable semi-automatic biopsy needle, which comprises a base, a top cover, a needle fixing piece and a trigger mechanism, wherein a chute is arranged at the center of the base, the needle fixing piece is arranged in the chute in a sliding way, a one-way buckle is arranged in the chute, a strip-shaped clamping groove is arranged at the bottom surface of the needle fixing piece, the one-way buckle is embedded in the clamping groove, two pairs of limiting bulges are arranged in the clamping groove at intervals, a spring mounting groove is arranged at the top surface of the needle fixing piece, a spring is arranged in the spring mounting groove, one end of the spring is connected with the needle fixing piece, the other end of the spring is connected with a spring fixing block on the base, the trigger mechanism comprises a handle, a push rod and a contact, the push rod penetrates into the base, the inner end of the push rod is connected with the contact, the outer end of the contact is connected with the handle, the contact is opposite to the one-way buckle to enable the one-way buckle to cross the limiting bulges so as to release the one-way buckle, the top cover is buckled on the needle fixing piece, the top cover is clamped with the base through three points. The utility model discloses structural design is compact, and is ingenious, easy dismounting.

Description

Disposable semi-automatic biopsy needle

Technical Field

The utility model belongs to the field of medical equipment, a biopsy needle is related to, especially a semi-automatic biopsy needle of disposable.

Background

A biopsy needle is a medical instrument used for sampling living tissues of pyramidal tumors, unknown tumors, and the like of various organs such as kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, body surface, and the like, and sucking cells, and the like.

There are many kinds of biopsy needles, and the bullet-type biopsy needle has the most extensive application because it is fast and simple to insert, and has little damage to organs and surrounding tissues.

Many bullet gun type biopsy needles are relatively complicated in structural design, many in parts, complex in assembly and prone to errors.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a disposable semi-automatic biopsy needle with scientific and reasonable structural design.

The utility model provides a technical scheme that technical problem adopted is:

a disposable semi-automatic biopsy needle comprises a base, a top cover, a needle fixing piece and a trigger mechanism, wherein a sliding groove is formed in the center of the base, the needle fixing piece is arranged in the sliding groove in a sliding mode, a one-way buckle used for limiting the position of the needle fixing piece is arranged in the sliding groove, a strip-shaped clamping groove is formed in the bottom surface of the needle fixing piece, the one-way buckle is embedded into the clamping groove, two pairs of limiting bulges are formed in the clamping groove at intervals, a spring mounting groove is formed in the top surface of the needle fixing piece, a spring is arranged in the spring mounting groove, one end of the spring is connected with the needle fixing piece, the other end of the spring is connected with a spring fixing block on the base, the trigger mechanism comprises a handle, a push rod and a contact which are sequentially connected, the push rod penetrates into the base, the inner end of the push rod is connected with a contact, the outer end of the handle is opposite to the one-way buckle, the contact pushes the one-way buckle to enable the one-way buckle to cross the limiting bulges so as to release the one-way buckle, the top cap is buckled on the needle fixing piece, and the top cap is clamped with the base through three points.

Moreover, two finger rings are symmetrically arranged on two sides of the sliding groove on the base.

Moreover, a long strip window is arranged on the top surface of the top cover, and two position-shifting lines are arranged on two sides of the long strip window.

And, the top surface of push rod and the spout bottom surface parallel and level of base, the push rod slides in the space between a pair of spacing arch that mirror symmetry set up.

Moreover, the outer end of the push rod is sleeved with a safety cutting sleeve.

Furthermore, the biopsy needle comprises two gear stages.

The utility model has the advantages that:

1. the utility model discloses the interval system has two pairs of spacing archs in the draw-in groove of needle mounting, forms two gears, and the compression degree of spring is injectd to these two gears, and then the pop-up length of injecing the biopsy needle.

2. The utility model discloses constitute by four pieces, structural design is compact, and is ingenious, easy dismounting.

3. The utility model discloses a two gears, first gear are used for getting half the tissue, and the second gear is used for getting whole tissues.

Drawings

FIG. 1 is a three-dimensional structure diagram of the appearance of the present invention;

FIG. 2 is a perspective view of FIG. 1 with the top cover removed;

FIG. 3 is a bottom view of FIG. 1;

fig. 4 is an exploded view of the present invention;

FIG. 5 is a bottom view of the needle mount of FIG. 4;

FIG. 6 is a top view of the base of FIG. 4;

fig. 7 is a usage state diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention should not be limited thereto.

A disposable semi-automatic biopsy needle comprises a base 3, a top cover 2, a needle fixing piece 1 and a trigger mechanism 4, wherein a sliding groove 3-2 is formed in the center of the base, the needle fixing piece is installed in the sliding groove in a sliding mode, a one-way buckle 3-5 is installed in the sliding groove and used for limiting the position of the needle fixing piece, a strip-shaped clamping groove 1-4 is formed in the bottom surface of the needle fixing piece and embedded into the clamping groove, two pairs of limiting bulges 1-3 are formed in the clamping groove at intervals, the sliding needle fixing piece is blocked by the one-way buckle after encountering the one-way buckle, and therefore the effect of limiting the position of the needle fixing piece is achieved.

The top surface of the needle fixing piece is provided with a spring installation groove 1-1, a spring 1-2 is installed in the spring installation groove, one end of the spring is connected with the needle fixing piece, and the other end of the spring is connected with a spring fixing block 3-3 on the base.

The trigger mechanism is used for releasing the one-way buckle and comprises a handle 4-4, a push rod 4-2 and a contact 4-3 which are sequentially connected, the push rod penetrates into the base, the top surface of the push rod is flush with the bottom surface of the sliding groove of the base, the inner end of the push rod is connected with the contact, the outer end of the push rod is connected with the handle, the contact is opposite to the one-way buckle, and the contact pushes the one-way buckle to enable the one-way buckle to cross the limiting protrusion, so that the one-way buckle is released, and the needle fixing piece is released.

In order to prevent misoperation, a safety cutting sleeve 4-1 is sleeved at the outer end of the push rod.

For the convenience of operation, two finger rings 3-1 are symmetrically arranged on two sides of the sliding groove on the base.

The top cover is buckled on the needle fixing piece and used for protecting the needle fixing piece, the top cover is clamped with the base through three points, a clamping groove 3-4 is formed in the base, and a clamping protrusion 2-2 is formed in the top cover corresponding to the clamping groove of the base. The needle fixing member is installed between the top cover and the base.

A long strip window 2-1 is arranged on the top surface of the top cover, and two gear lines are arranged on two sides of the long strip window and used for judging the gear of the needle fixing piece.

The use method of the pop-up mechanism comprises the following steps:

before using, at first take off the insurance cutting ferrule, then the forefinger and the thumb of a hand insert the finger intra-annular of base, the handle of trigger mechanism is being held in another hand, towards the direction pulling handle of keeping away from the base, the in-process of pulling, the contact takes the needle mounting to slide, at gliding in-process, the spring is compressed, through two gears, the spring is compressed and targets in place, one-way buckle blocks the needle mounting this moment, then inwards push away the handle, make the contact extrude one-way buckle, the needle mounting is released in the twinkling of an eye, the needle is popped out.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements are all within the protection scope of the present invention.

Claims

1. A semi-automatic biopsy needle of disposable characterized in that: the needle fixing device comprises a base, a top cover, a needle fixing piece and a trigger mechanism, wherein a sliding groove is formed in the center of the base, the needle fixing piece is arranged in the sliding groove in a sliding mode, a one-way buckle used for limiting the position of the needle fixing piece is arranged in the sliding groove, a strip-shaped clamping groove is formed in the bottom surface of the needle fixing piece, the one-way buckle is embedded into the clamping groove, two pairs of limiting bulges are formed in the clamping groove at intervals, a spring mounting groove is formed in the top surface of the needle fixing piece, a spring is arranged in the spring mounting groove, one end of the spring is connected with the needle fixing piece, the other end of the spring is connected with a spring fixing block on the base, the trigger mechanism comprises a handle, a push rod and a contact which are sequentially connected, the push rod penetrates into the base, the inner end of the push rod is connected with the contact, the outer end of the push rod is connected with the handle, the contact is opposite to the one-way buckle, the contact pushes the one-way buckle to enable the one-way buckle to cross the limiting bulges so as to release the one-way buckle, the top cover is buckled on the needle fixing piece, the top cover is clamped with the base through three points.

2. The single use semi-automatic biopsy needle of claim 1, wherein: two finger rings are symmetrically arranged on two sides of the sliding groove on the base.

3. The single use semi-automatic biopsy needle of claim 1, wherein: the top surface of the top cover is provided with a strip-shaped window, and two sides of the strip-shaped window are provided with two position-shifting lines.

4. The single use semi-automatic biopsy needle of claim 1, wherein: the top surface of push rod and the spout bottom surface parallel and level of base, the push rod slides in the space between a pair of spacing arch that mirror symmetry set up.

5. The single use semi-automatic biopsy needle of claim 1, wherein: the outer end of the push rod is sleeved with a safety card sleeve.

6. The single use semi-automatic biopsy needle of claim 1, wherein: the biopsy needle comprises two gear positions.