CN214336612U - Double-firing biopsy gun with bottom safety lock - Google Patents

Abstract

The utility model provides a take biopsy rifle of double-strike of bottom safety lock, includes the biopsy rifle body, the biopsy rifle body includes rifle body shell, be provided with A key and the D key that is used for corresponding core needle and outer pipe needle in the percussion on the rifle body shell, the bottom of rifle body shell is provided with the bottom safety lock that is used for restricting A key and D key and pushes down. Compared with the prior art, the utility model discloses set up the safety lock in rifle body bottom surface, promote the safety lock and draw when piece to the safety lock draws piece moving walkways's front end, safety lock in the safety lock draws the piece to support and leans on A key and D key lower part, the pushing down of A key and D key has been restricted, thereby pin A key and D key, when needing the percussion operation, the pulling safety lock draws the piece to the rear end that the safety lock draws piece moving walkways, the safety lock draws the piece and removes the restriction to A key and D key, press two keys and can fire the biopsy rifle, the potential safety hazard that the maloperation brought for the user can be avoided very well in the setting of safety lock.

Description

Double-firing biopsy gun with bottom safety lock

Technical Field

The utility model relates to the technical field of medical equipment, in particular to double-shot biopsy gun with a bottom safety lock.

Background

Tumor is a pathological change formed by the clonal abnormal hyperplasia of a certain cell of a local tissue which loses the normal regulation and control of the growth of the certain cell at the gene level under the action of various carcinogenic factors of an organism, and is generally divided into benign and malignant types.

Early detection, correct diagnosis, and timely treatment have important effects on prognosis. With the continuous upgrading and improvement of the examination means and the examination method, the diagnosis accuracy is gradually improved, but a large part of tumors still have no typical imaging characteristics and are difficult to diagnose. The correct diagnosis requires three combinations of clinical, imaging and pathology. Among them, pathological diagnosis plays a key role in the selection of a treatment regimen. Needle biopsy is the primary way to obtain a pathological diagnosis.

A single-use biopsy needle is used for percutaneously penetrating an organ or tissue under ultrasound or CT imaging to obtain a histological specimen in an incisional manner for pathological diagnosis.

At present, the biopsy needle mainly includes outer needle, interior core needle, be equipped with the sample groove on the inner core needle, outer needle suit is outside at the inner core needle, install on the needle file together, obtain the sample by controllable jettison device control, during the use, when image monitoring down the percutaneous puncture to the sample position, the inner core needle pierces earlier makes the sample groove be located focus department, jettison device jets out outer needle afterwards, outer needle dashes forward, with the tissue cutting at pathological change position in inner core needle sample groove, extract the biopsy needle and can obtain the sample.

The existing double-percussion biopsy needle comprises a full-automatic biopsy needle and a semi-automatic biopsy needle, but most of biopsy needles do not have a percussion lock structure, and when misoperation (percussion button) occurs, additional injury is easily caused to a user or a patient.

SUMMERY OF THE UTILITY MODEL

To prior art defect more than exists, the utility model provides a take biopsy rifle is sent out to double-strike of bottom safety lock as follows:

the technical scheme of the utility model is realized like this:

the utility model provides a take biopsy rifle of double-strike of bottom safety lock, includes the biopsy rifle body, the biopsy rifle body includes rifle body shell, be provided with A key and the D key that is used for corresponding core needle and outer pipe needle in the percussion on the rifle body shell, the bottom of rifle body shell is provided with the bottom safety lock that is used for restricting A key and D key and pushes down.

Preferably, the bottom safety lock comprises a safety lock pulling block and a safety lock pulling block moving channel, the front end of the safety lock pulling block moving channel is arranged in a key A and key D pressing area, and the safety lock pulling block can be inserted into the key A and key D pressing area to press and limit the key A and the key D.

Preferably, the safety lock pulling block moving channel comprises a socket arranged at the rear end of the gun body shell, the safety lock pulling block is sequentially inserted into the rear end and the front end of the safety lock pulling block moving channel through the socket, and a positioning assembly used for positioning the safety lock pulling block to be pushed to the bottom and pulled out to the bottom is arranged at the rear end of the safety lock pulling block moving channel.

Preferably, the safety lock draws the piece to include picture peg and pull handle, be provided with preceding locating hole and the back locating hole that matches with locating component on the picture peg, locating component draws the ejector pin accommodation space of piece moving channel side including setting up at the safety lock, be provided with the spring in the ejector pin accommodation space, the bottom of spring one end butt ejector pin accommodation space, other end butt have the ejector pin, the end of ejector pin is the hemisphere, locating hole and back locating hole before the end of ejector pin can pass in and out when the safety lock draws the piece to remove.

Preferably, the front end of picture peg is equipped with spacing step, the inboard of socket is provided with and avoids the safety lock to draw the stopper that the piece removed the passageway with spacing step cooperation to pull out the safety lock.

Preferably, the pull handle is provided with an anti-slip groove.

Preferably, a circle of convex ring is arranged on the outer side of the front end of the ejector rod, and the spring is abutted to the convex ring.

Compared with the prior art, the utility model discloses there is following beneficial effect:

the utility model discloses a take biopsy rifle is sent out in double-strike of bottom safety lock, gun body bottom surface has set up the safety lock, promote the safety lock and draw when piece draws the front end of piece moving passage to the safety lock, safety lock in the safety lock draws the piece to support and leans on A key and D key lower part, the pushing down of A key and D key has been restricted, thereby pin A key and D key, when needing the percussion operation, the pulling safety lock draws the piece to the rear end that the safety lock draws piece moving passage, the safety lock draws the piece to relieve the restriction to A key and D key, press two keys and can fire biopsy rifle, the potential safety hazard that the maloperation brought for the user can be avoided very well in the setting of safety lock.

Drawings

FIG. 1 is a schematic view of a double-shot biopsy gun with a bottom safety lock according to the present invention;

FIG. 2 is a side sectional view (unlocked state) of the double-shot biopsy gun with bottom safety lock of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of a double-shot biopsy gun with a bottom safety lock according to the present invention (with the upper shell removed);

FIG. 5 is a side cross-sectional view (locked state) of the double-shot biopsy gun with bottom safety lock of the present invention;

FIG. 6 is a schematic structural view of the safety lock pulling block of the present invention;

fig. 7 is a schematic structural diagram of the upper case of the present invention.

In the figure: gun body shell 100, A key 110, D key 120, safety lock pulling block 200, flashboard 210, front positioning hole 211, rear positioning hole 212, limiting step 213, pull handle 220, safety lock pulling block moving channel 300, A key and D key pressing area 310, socket 320, limiting block 321, mandril accommodating space 330, spring 340, mandril 350, convex ring 351 and rod body 352.

Detailed Description

The present invention will be described more fully and clearly with reference to the accompanying drawings, which are incorporated in and constitute a part of this specification.

As shown in fig. 1 to 7, a double-percussion biopsy gun with a bottom safety lock comprises a biopsy gun body, the biopsy gun body comprises a gun body casing 100, an a key 110 and a D key 120 for correspondingly percussion an inner core needle and an outer core needle are arranged on the gun body casing 100, the gun body casing 100 comprises an upper shell and a lower shell, the a key 110 and the D key 120 are arranged on the upper shell, and the bottom of the gun body casing 100 is provided with the bottom safety lock for limiting the pressing of the a key 110 and the D key 120. The bottom safety lock comprises a safety lock pulling block 200 and a safety lock pulling block moving channel 300, the front end of the safety lock pulling block moving channel 300 is arranged in an A key and D key pressing area 310, and the safety lock pulling block 200 can be inserted into the A key and D key pressing area 310 to press down and limit the A key 110 and the D key 120, so that the A key and the D key are locked, and error firing is avoided. Safety lock draws piece removal channel 300 is including setting up the socket 320 in rifle body housing 100 rear end, safety lock draws piece 200 to insert safety lock through socket 320 in proper order and draws the rear end and the front end of piece removal channel 300, safety lock draws the rear end of piece removal channel 300 to be provided with and is used for fixing a position safety lock and draws piece 200 to the end and draw out the locating component to the end, locating component is used for confirming whether the propelling movement of safety lock draw piece 200 or draws out to the right place to increase the operation and feel. Safety lock draws piece 200 to include picture peg 210 and pull handle 220, be provided with the front location hole 211 and the back locating hole 212 that match with locating component on the picture peg 210, the front location hole is used for the safety lock to draw piece 200 to withdraw from the location that the trigger key pins, location when back locating hole 212 is used for the trigger key to pin, locating component draws the ejector pin accommodation space 330 of piece moving passage 300 side including setting up at the safety lock, be provided with spring 340 in the ejector pin accommodation space 330, spring 340 one end butt ejector pin accommodation space 330's bottom, other end butt have ejector pin 350, the end of ejector pin 350 is the hemisphere, makes things convenient for front location hole 211 and back locating hole 212 to extrude at the end of ejector pin 350, locating hole 211 and back locating hole 212 before the end of ejector pin 350 can pass in and out when safety lock draws piece 200 to remove. The front end of picture peg 210 is equipped with spacing step 213, the inboard of socket 320 is provided with and avoids safety lock to draw the stopper 321 that the piece 300 was drawn to the safety lock with spacing step 213 cooperation, and when pulling safety lock and drawing piece 200 to the safety lock and drawing piece removal channel 300 rearmost end, stopper 321 just can withstand spacing step 213, makes safety lock draw piece 200 can not draw from socket 320 and break away from in rifle body housing 100. The anti-slip groove 221 is arranged on the pull handle 220, so that the operation hand feeling of a user is improved. The outer side of the front end of the push rod 350 is provided with a circle of convex ring 351, the spring 340 is abutted against the convex ring 351, and the rod body 352 of the push rod 350 can be inserted into the circle of the spring 340, so that the spring 340 also has a limiting effect on the push rod 350, and the push rod 350 is prevented from falling off from the push rod accommodating space 330.

Synthesize the utility model discloses a take structure of biopsy rifle is sent out to double-strike of bottom safety lock can know, set up the safety lock in rifle body bottom surface, promote the safety lock and draw when piece draws the front end of piece moving walkways to the safety lock, the safety lock in the safety lock draws the piece to lean on A key and D key lower part, the pushing down of A key and D key has been restricted, thereby pin A key and D key, when needing the percussion operation, the pulling safety lock draws the piece to the rear end that the safety lock draws piece moving walkways, the safety lock draws the piece and removes the restriction to A key and D key, press two keys and can fire the biopsy rifle, the setting of safety lock can be fine avoid the potential safety hazard that the maloperation brought for the user.

Claims (7)

1. The utility model provides a take biopsy rifle of double-strike of bottom safety lock, its characterized in that, includes the biopsy rifle body, the biopsy rifle body includes rifle body shell, be provided with A key and the D key that is used for corresponding core needle and outer pipe needle in the percussion on the rifle body shell, the bottom of rifle body shell is provided with the bottom safety lock that is used for restricting A key and D key and pushes down.

2. The double-firing biopsy gun with the bottom safety lock as claimed in claim 1, wherein the bottom safety lock comprises a safety lock pulling block and a safety lock pulling block moving channel, the front end of the safety lock pulling block moving channel is arranged in an A key and D key pressing area, and the safety lock pulling block can be inserted into the A key and D key pressing area to press and limit the A key and the D key.

3. The double-firing biopsy gun with the bottom safety lock as claimed in claim 2, wherein the safety lock pulling block moving channel comprises a socket arranged at the rear end of the gun body shell, the safety lock pulling block is sequentially inserted into the rear end and the front end of the safety lock pulling block moving channel through the socket, and a positioning assembly for positioning the pushing and pulling of the safety lock pulling block to the bottom is arranged at the rear end of the safety lock pulling block moving channel.

4. The double-percussion biopsy gun with a bottom safety lock according to claim 3, wherein the safety lock pull block comprises an insert plate and a pull handle, the insert plate is provided with a front positioning hole and a rear positioning hole which are matched with the positioning assembly, the positioning assembly comprises an ejector rod accommodating space arranged on the side face of the moving channel of the safety lock pull block, a spring is arranged in the ejector rod accommodating space, one end of the spring abuts against the bottom of the ejector rod accommodating space, the other end of the spring abuts against an ejector rod, the end of the ejector rod is hemispherical, and the end of the ejector rod can enter and exit the front positioning hole and the rear positioning hole when the safety lock pull block moves.

5. The double-percussion biopsy gun with a bottom safety lock according to claim 4, wherein the front end of the insertion plate is provided with a limiting step, and the inner side of the insertion opening is provided with a limiting block which is matched with the limiting step to prevent the safety lock pulling block from pulling out of the moving channel of the safety lock pulling block.

6. The double-shot biopsy gun with bottom safety lock according to claim 5, wherein the pull handle is provided with a non-slip groove.

7. The double-shot biopsy gun with bottom safety lock according to claim 4, wherein a ring of convex ring is arranged outside the front end of the ejector rod, and the spring is abutted with the convex ring.

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