CN215018048U

CN215018048U - Tumor biopsy sampling device

Info

Publication number: CN215018048U
Application number: CN202120873390.9U
Authority: CN
Inventors: 王林娟; 段玉忠
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-07
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a tumor biopsy sampling device, which comprises a needle cylinder, a sampling needle and a push rod; the sampling needle and the push rod are arranged along the axial direction of the needle cylinder, the sampling needle is arranged in the needle cylinder, a needle seat is arranged at one end of the sampling needle, and one side of the needle seat, which is far away from the sampling needle, is connected with the needle cylinder through a spring; the push rod is a screw rod, a threaded hole is formed in the needle cylinder, the push rod is in threaded connection with the threaded hole, and one end of the push rod extends into the needle cylinder and is abutted to the needle seat. Use above-mentioned tumour biopsy sampling device, the rotation through the push rod can promote needle file and sample needle removal gradually to under the reverse acting force of spring, can hold the distance of advancing the needle better, promote the sample effect and guarantee sample safety.

Description

Tumor biopsy sampling device

Technical Field

The utility model particularly relates to a tumour biopsy sampling device.

Background

Biopsy is "biopsy," also called surgical pathology examination for short, and refers to a technique for taking out pathological tissues from patients by cutting, clamping or puncturing, and performing pathology examination, which is the most important part of diagnosis and pathology, and can be used for making clear histopathology diagnosis for most of the examined cases, and is used as the final clinical diagnosis.

In the surgical treatment of tumor, the biopsy of lesion tissues or organs is required to be sampled before and after the operation, so that the next treatment scheme can be conveniently determined, whether the surgical treatment is thorough or not can be judged, whether further treatment is required or not can be judged, and the like. The biopsy sampling device in the prior art has poor control on the strength during needle insertion, and the distance between the inserting needles is poor and is easy to insert too deep or too shallow, so that the injury to the sampling position or the failure of sampling are caused.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model provides a tumour biopsy sampling device can master the distance of needle insertion better during the sample.

In order to achieve the above purpose, the present invention is realized by the following technical solution: a tumor biopsy sampling device comprises a needle cylinder, a sampling needle and a push rod;

the sampling needle and the push rod are arranged along the axial direction of the needle cylinder, the sampling needle is arranged in the needle cylinder, a needle seat is arranged at one end of the sampling needle, and one side of the needle seat, which is far away from the sampling needle, is connected with the needle cylinder through a spring;

the push rod is a screw rod, a threaded hole is formed in the needle cylinder, the push rod is in threaded connection with the threaded hole, and one end of the push rod extends into the needle cylinder and is abutted to the needle seat.

The push rod is rotated outside the needle cylinder to push the needle seat and the sampling needle in the needle cylinder to move along the axial direction, so that the sampling needle can penetrate into a pathological change part for sampling, and then the push rod is rotated reversely, and the needle seat drives the sampling needle to withdraw under the action of the spring.

The tumor biopsy sampling device has the beneficial effects that: the rotation through the screw rod promotes the needle inserting of sampling needle, can control the needle inserting distance of sampling needle better, promotes the effect of biopsy sample and guarantees safety.

Furthermore, a limiting ring is further arranged in the needle cylinder, two opposite sides of the limiting ring are connected with the inner wall of the needle cylinder through fixing rods, and the sampling needle is inserted in the limiting ring and is in sliding connection with the limiting ring.

The limiting ring can limit the motion track of the sampling needle, ensure the sampling needle to move along the axial direction and avoid the deviation of the needle insertion.

Furthermore, the section of the inner ring of the limit ring is rectangular, and the section of one end, close to the push rod, of the sampling needle is also rectangular and is matched with the limit ring.

The rectangle shape spacing ring can restrict the sampling needle not to rotate when moving along the axial direction, and the sampling effect is prevented from being influenced.

Further, still be equipped with negative pressure pipe and gasbag in the cylinder, be equipped with the fixed plate on the inner wall of cylinder, the gasbag sets up on the fixed plate to be linked together through negative pressure pipe and sample needle, the gasbag is equipped with one-way pneumatic valve one, be equipped with one-way pneumatic valve two on the negative pressure pipe, the needle file can extrude the gasbag.

The needle seat moves towards the gasbag during the needle insertion to compress the gasbag, extrude inside gas from one-way pneumatic valve one, withdraw from the needle after the sample is accomplished, form the negative pressure in the gasbag and make the sample needle can hold pathological change tissue and pull out, thereby promote the sample effect.

Furthermore, one end of the needle cylinder, which is far away from the push rod, is provided with a cutting knife, the cutting knife is rotationally connected with the needle cylinder through a rotating shaft, the rotating shaft is arranged along the axial direction of the needle cylinder, and one end of the rotating shaft is inserted into the inner wall of the needle cylinder and is connected with the cutting knife.

The rotating shaft is rotated firstly during needle insertion, so that the cutter opens the needle cylinder to facilitate the extension of the sampling needle, the rotating shaft can be rotated again to close the needle cylinder during needle withdrawal, and the cutter can cut off the pathological tissues taken out by the sampling needle at the moment.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

Fig. 1 is a front view of a tumor biopsy sampling device according to an embodiment of the present invention;

reference numerals:

10-needle cylinder, 11-limit ring, 12-fixed rod, 20-sampling needle, 21-needle seat, 22-spring, 30-push rod, 40-negative pressure tube, 41-air bag, 42-fixed plate, 50-cutting knife and 51-rotating shaft.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1, the present invention provides a tumor biopsy sampling device, which comprises a needle cylinder 10, a sampling needle 20 and a push rod 30, wherein the push rod 30 pierces the sampling needle 20 in the needle cylinder 10 into a tumor, so as to take out a lesion tissue, thereby completing a biopsy sampling.

Specifically, the sampling needle 20 and the push rod 30 are both arranged along the axial direction of the syringe 10, the sampling needle 20 is located in the syringe 10, one end of the sampling needle is provided with a needle seat 21, the push rod 30 is located on the other side of the needle seat 21, one end of the push rod is abutted against the needle seat 21, the other end of the push rod extends out of the syringe 10, a threaded hole is formed in the syringe 10, the push rod 30 is a screw rod and is in threaded connection with the threaded hole, and one side of the needle seat 21 abutted against the push rod 30 is further provided with a spring 22 and is connected with the inner wall of the syringe 10 through the spring 22. By rotating the push rod 30, the push rod 30 can be moved axially, thereby pushing the sampling needle 20 axially out of the barrel 10 or back into the barrel 10 under the action of the spring 22.

The needle cylinder 10 is internally provided with a limiting ring 11 and a fixing rod 12 for limiting the motion trail of the sampling needle 20, the limiting ring 11 is positioned on the axis of the needle cylinder 10, and two opposite sides are connected with the inner wall of the needle cylinder 10 through the fixing rod 12. When the push rod 30 pushes the sampling needle 20 to move, the limit ring 11 can limit the sampling needle 20 to move only along the axial direction, so as to avoid the deviation of the track, and avoid the rotation of the sampling needle 20.

Specifically, a negative pressure tube 40 and an air bag 41 are further arranged in the needle cylinder 10, the air bag 41 is arranged on the inner wall of the needle cylinder 10 through a fixing plate 42 and is positioned between the needle seat 21 and the limiting ring 11, one end of the negative pressure tube 40 is communicated with the air bag 41, the other end of the negative pressure tube is communicated with the sampling needle 20, a one-way air valve I communicated with the outside is arranged on the air bag 41, and a one-way air valve II is arranged on the negative pressure tube 40. When the needle is inserted, the push rod 30 pushes the needle seat 21 to move towards the direction of the air bag 41, the air bag 41 is gradually squeezed, internal air is exhausted from the one-way air valve, the air bag 41 is in a negative pressure state when the needle is retracted, and after the needle seat 21 leaves the air bag 41, the negative pressure tube 40 sucks the cut lesion tissue through the sampling needle 20, so that a sample can be taken out conveniently.

Specifically, the one end of the syringe 10 that keeps away from the push rod 30 is equipped with the cutting knife 50, insert along the axial in the lateral wall of syringe 10 and be equipped with pivot 51, the one end of pivot 51 is connected with cutting knife 50, can drive cutting knife 50 and rotate for syringe 10 along the horizontal direction, rotate pivot 51 and cutting knife 50 during the needle insertion and open syringe 10, make the sample needle 20 can stretch out syringe 10 and insert the needle, gain behind the pathological change tissue withdraw of the needle, rotate pivot 51 and cutting knife 50 and close syringe 10, can cut off the pathological change tissue of taking out.

The working principle of the tumor biopsy sampling device is as follows: rotate pivot 51 and cutting knife 50 and open cylinder 10, rotatory push rod 30 promotes sampling needle 20 along axial motion gradually, the movement track of sampling needle 20 can be restricted to spacing ring 11, needle file 21 compresses gasbag 41 gradually, with the gas escape the external world, after sampling needle 20 punctures and obtains pathological change tissue in the tumour, reverse rotation push rod 30, spring 22 drives needle file 21 and sampling needle 20 and moves back the needle, gasbag 41 makes sampling needle 20 hold pathological change tissue under negative pressure state simultaneously, rotate cutting knife 50 and close cylinder 10 after moving back the needle, and cut off pathological change tissue.

By using the tumor biopsy sampling device, the needle insertion distance can be better grasped during needle insertion, so that the safety and the sampling effect are ensured, and a better sampling effect is achieved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A tumor biopsy sampling device, comprising: comprises a needle cylinder, a sampling needle and a push rod;

2. A tumor biopsy sampling device according to claim 1, wherein: the needle cylinder is also internally provided with a limiting ring, two opposite sides of the limiting ring are connected with the inner wall of the needle cylinder through fixing rods, and the sampling needle is inserted in the limiting ring and is in sliding connection with the limiting ring.

3. A tumor biopsy sampling device according to claim 2, wherein: the section of the inner ring of the limiting ring is rectangular, and the section of one end of the sampling needle, which is close to the push rod, is also rectangular and is matched with the limiting ring.

4. A tumor biopsy sampling device according to claim 1, wherein: the needle cylinder is internally provided with a negative pressure tube and an air bag, the inner wall of the needle cylinder is provided with a fixing plate, the air bag is arranged on the fixing plate and is communicated with the sampling needle through the negative pressure tube, the air bag is provided with a one-way air valve I, the negative pressure tube is provided with a one-way air valve II, and the needle seat can extrude the air bag.

5. A tumor biopsy sampling device according to claim 1, wherein: the cutting device is characterized in that a cutting knife is arranged at one end, far away from the push rod, of the needle cylinder, the cutting knife is rotationally connected with the needle cylinder through a rotating shaft, the rotating shaft is arranged along the axial direction of the needle cylinder, and one end of the rotating shaft is inserted into the inner wall of the needle cylinder and connected with the cutting knife.