CN210749302U

CN210749302U - Tumor sampling device

Info

Publication number: CN210749302U
Application number: CN201921295007.5U
Authority: CN
Inventors: 胡立立; 袁越; 黄重芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-16
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a tumor sampling device, which comprises a sampling needle, a coaxial sleeve, a sampling rod and a cutting knife; the coaxial sleeve is sleeved on the periphery of the sampling needle, the inner surface of the coaxial sleeve is in close contact with the outer surface of the sampling needle, the sampling needle moves in the coaxial sleeve, and the front end of the coaxial sleeve is provided with a conical cutting surface; the cutting knife is installed to the one end of thief rod, and the sampling needle inner wall is hugged closely to the cutting edge of cutting knife, and the sampling needle is worn out to the other end of thief rod, offers a plurality of thief holes on the sampling needle. The utility model discloses set up thief rod and cutting knife in the sampling probe, after the sampling probe reachd the assigned position during use, the thief hole can be crowded into to the tumour tissue, drag the thief rod this moment, the thief rod drives the cutting knife and removes, with the tumour tissue cutting take out along with the hollow handle department of thief rod from the sampling probe installation during via the thief hole, need take a sample once more only need with thief rod and cutting knife stretch into again in the sampling probe can, need not to insert the sampling probe again in the patient body, reduce patient's misery.

Description

Tumor sampling device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a tumour sampling device.

Background

With the continuous development of precise medicine, the accurate pathological diagnosis of the tumor is indispensable, and the percutaneous aspiration biopsy sampling has the advantages of small trauma to the aspiration tissue, less bleeding and safety, so the application is more and more.

The existing tumor sampling device is mainly of a cutting type, tumor tissues are extracted to a coaxial sleeve by a sampling needle hook, and a cutting blade at the coaxial sleeve is used for cutting when the sampling needle is extracted to the coaxial sleeve, so that the tumor tissues are separated. However, the cutting mode has less tumor tissues to be cut, and if the tumor tissues need to be sampled for multiple times, the patients need to be inserted for multiple times, so that the pain of the patients is increased.

SUMMERY OF THE UTILITY MODEL

For solving prior art, the tumour tissue of once cutting that tumour sampling device exists need to be gone into the needle many times simultaneously in sampling, increases the painful technical problem of patient, the technical scheme of the utility model as follows:

the tumor sampling device in the utility model comprises a sampling needle, a coaxial sleeve, a sampling rod and a cutting knife; the coaxial sleeve is sleeved on the periphery of the sampling needle, the inner surface of the coaxial sleeve is in close contact with the outer surface of the sampling needle, the sampling needle moves in the coaxial sleeve, and the front end of the coaxial sleeve is provided with a conical cutting surface;

the cutting knife is installed to the one end of thief rod, and the cutting edge of cutting knife hugs closely the sampling needle inner wall, and the sampling needle is worn out to the other end of thief rod, set up a plurality of thief holes on the sampling needle.

In a preferred embodiment, the front end of the sampling needle is provided with a needle point, the tail end of the sampling needle is provided with a hollow handle, the tail end of the coaxial sleeve is provided with a clamping flap, the shape of the clamping flap is matched with that of the front end of the hollow handle, and the clamping sleeve is arranged outside the clamping flap and is in threaded connection with the clamping flap.

In a preferred embodiment, the cutting knife comprises a knife body, a support rod and a cutting part; the two ends of the supporting rod are respectively connected with the cutter body, so that the cutter body is bent into an arc-shaped structure, the cutting parts are arranged at the two ends of the cutter body and are tightly attached to the inner wall of the sampling needle, and the cutting edges of the cutting parts face the tail end of the sampling needle.

In a preferred embodiment, the sampling device comprises a plurality of cutting knives which are uniformly distributed on the sampling rod.

In a preferred embodiment, the outer wall of the coaxial sleeve is provided with a puncture depth mark.

In a preferred embodiment, the outer wall of the sampling needle is provided with sampling length markings.

The utility model provides a tumour sampling device compares with prior art, and its beneficial effect is:

the utility model provides a tumour sampling device, set up thief rod and cutting knife in the sampling needle, after the sampling needle reachd the assigned position during use, the thief hole of seting up on the sampling needle can be crowded to tumour tissue, drag the thief rod back this moment, the thief rod drives the cutting knife and removes, after tumour tissue cutting when via the thief hole, take out along with the hollow handle department of sampling rod from the sampling needle installation, when needing to take a sample again, only need with thief rod and cutting knife stretch into again in the sampling needle can, need not to insert the sampling needle again in the patient is internal, patient's misery is reduced.

The utility model discloses set up the cutter body of cutting knife into the arc, cutting part sets up in the both ends of cutter body for when needing a lot of samples, when the cutting knife gets into the sampling needle in from the outside, during via the thief hole, can extrude the tumour tissue of crowded income thief hole, can not cut it, and just cut when needs drag back the thief rod, avoid pushing away the needle point department with tumour tissue.

The utility model discloses a plurality of cutting knives have been set up on the thief rod for after cutting a tumour, make slightly and stop, treat that tumour tissue gets into the thief hole once more after, drag back once more, thereby cut more tumour tissues, avoid many times sampling operation.

Drawings

FIG. 1 is a schematic view of the structure of a sampling needle in example 1;

FIG. 2 is a schematic view of the structure of a coaxial sleeve in embodiment 1;

FIG. 3 is a schematic view showing the overall structure of a tumor sampling apparatus according to an embodiment;

FIG. 4 is a schematic view of the structure of a sampling needle in example 2;

FIG. 5 is an enlarged view at A in FIG. 4;

FIG. 6 is a schematic view showing the structure of a sampling needle in example 3.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-3, the tumor sampling device of the present invention comprises a sampling needle 1, a coaxial sleeve 2, a sampling rod 3 and a cutting knife 4; the coaxial sleeve 2 is sleeved on the periphery of the sampling needle 1, the inner surface of the coaxial sleeve 2 is tightly contacted with the outer surface of the sampling needle 1, the sampling needle 1 moves in the coaxial sleeve 2, and the front end of the coaxial sleeve 2 is provided with a conical cutting surface 2-1;

a cutting knife 4 is installed at one end of the sampling rod 3, the cutting edge of the cutting knife 4 is tightly attached to the inner wall of the sampling needle 1, the other end of the sampling rod 3 penetrates out of the sampling needle 1, and a plurality of sampling holes 1-4 are formed in the sampling needle 1. The front end of the sampling needle 1 is provided with a needle point 1-1, the tail end of the sampling needle 1 is provided with a hollow handle 1-2, the tail end of the coaxial sleeve 2 is provided with a clamping valve 2-2, the shape of the clamping valve 2-2 is matched with that of the front end of the hollow handle 1-2, and the clamping sleeve 5 is arranged outside the clamping valve 2-2 and is in threaded connection with the clamping valve 2-2. The outer wall of the coaxial sleeve 2 is provided with puncture depth marks 2-3. The outer wall of the sampling needle 1 is provided with sampling length marks 1-3.

The using process is as follows: the method comprises the steps of carrying out enhanced CT scanning or ultrasonic or nuclear magnetic resonance on a patient, judging the position relation between a focus and dangerous organs such as peripheral blood vessels and nerves, determining the position and angle of puncture, and drawing a puncture needle inserting point at the corresponding position of skin.

(1) Inserting a sampling needle 1 with a sampling rod 3 and a cutting knife 4 into a coaxial sleeve 2, exposing a needle point 1-1 of the sampling needle 1 outside the coaxial sleeve 2, and completely arranging a sampling part of the sampling needle 1 provided with a sampling hole 1-4 in the coaxial sleeve 2; the relative position between the coaxial sleeve 2 and the sampling needle 1 is fixed by screwing the screw thread between the clamping sleeve 5 and the clamping valve 2-2, and the structure is shown in figure 3.

(2) With sterile gloves, disinfecting skin with skin puncture needle insertion point as the center, laying operation hole towel, after local anesthesia, inserting a tumor sampling device into the edge of a focus, unscrewing the thread of the clamping sleeve 5, releasing the clamping valve 2-2, and separating the sampling needle 1 from the coaxial sleeve 2;

(3) according to the size and sampling length of the focus, the sampling needle 1 is pushed out of the coaxial sleeve 2 by combining with the sampling length marks 1-3 to reach the inside of the focus;

(4) waiting a certain time slightly to make the tumor tissue enter the sampling hole 1-4, at the moment, pulling back the sampling rod 3, the sampling rod 3 drives the cutting knife 4 to move, cutting the tumor tissue through the sampling hole 1-4, and taking out the tumor tissue from the hollow handle 1-2 on the sampling needle 1 along with the sampling rod 3. When secondary sampling is needed, the sampling rod 3 and the cutting knife 4 are only required to be stretched into the sampling needle 1 again, the sampling needle 1 is not required to be inserted into the body of a patient again, and the pain of the patient is reduced;

(5) after the multiple sampling is finished, the sampling needle 1 is pulled out, and the conical cutting surface 2-1 of the coaxial sleeve 2 is used for cutting and separating tumor tissues for the second time;

(6) and (4) picking out the tumor tissue obtained by secondary cutting from the sampling hole 1-4 by using a syringe needle.

Example 2

This example is a further modification of example 1, and is shown in fig. 4 to 5.

In order to avoid that when the cutting knife 4 enters the sampling needle 1 from the outside and passes through the sampling hole 1-4 during multiple sampling, the tumor tissue is cut, the tumor tissue is pushed to the needle point 1-1, the cutting knife 4 is cut, and the cutting knife 4 comprises a knife body 4-1, a support rod 4-2 and a cutting part 4-3; the two ends of the support rod 4-2 are respectively connected with the cutter body 4-1, so that the cutter body 4-1 is bent into an arc-shaped structure, the support rod 4-2 is also connected with the sampling rod 3, the cutting parts 4-3 are arranged at the two ends of the cutter body 4-1, the cutting parts 4-3 are tightly attached to the inner wall of the sampling needle 1, and the cutting edges of the cutting parts 4-3 face the tail end of the sampling needle 1.

The utility model discloses set up cutting knife 4's cutter body 4-1 into the arc, cutting part 4-3 sets up in the both ends of cutter body 4-1 for when needing a lot of samples, when cutting knife 4 got into sampling needle 1 from the outside in, during via sampling hole 1-4, can extrude the tumour tissue of crowded sampling hole 1-4, can not cut it, and just cut when needs drag back sampling rod 3, avoid pushing away tumour tissue to needle point 1-1 department.

Example 3

This example is a further modification of example 2, see fig. 6.

For the increase sampling volume of at every turn taking a sample, the utility model discloses set up a plurality of cutting knife 4, a plurality of cutting knife 4 evenly distributed is on thief rod 3. After cutting a tumor, the tumor is slightly stopped, and after the tumor tissue enters the sampling hole 1-4 again, the tumor tissue is pulled back again, so that more tumor tissues are cut, and multiple sampling operations are avoided.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The tumor sampling device is characterized by comprising a sampling needle, a coaxial sleeve, a sampling rod and a cutting knife; the coaxial sleeve is sleeved on the periphery of the sampling needle, the inner surface of the coaxial sleeve is in close contact with the outer surface of the sampling needle, the sampling needle moves in the coaxial sleeve, and the front end of the coaxial sleeve is provided with a conical cutting surface;

2. The tumor sampling device of claim 1, wherein the front end of the sampling needle is provided with a needle tip, the rear end of the sampling needle is provided with a hollow handle, the rear end of the coaxial sleeve is provided with a clamping flap, the clamping flap is matched with the front end of the hollow handle in shape, and the clamping sleeve is arranged outside the clamping flap and is in threaded connection with the clamping flap.

3. The tumor sampling device of claim 2, wherein the cutting blade comprises a blade body, a support rod, and a cutting portion; the two ends of the supporting rod are respectively connected with the cutter body, so that the cutter body is bent into an arc-shaped structure, the cutting parts are arranged at the two ends of the cutter body and are tightly attached to the inner wall of the sampling needle, and the cutting edges of the cutting parts face the tail end of the sampling needle.

4. A tumour sampling device according to any one of claims 1 to 3 including a plurality of cutting knives evenly distributed on the sampling rod.

5. The tumor sampling device of claim 4, wherein the outer wall of the coaxial sleeve is provided with a puncture depth marker.

6. The tumor sampling device of claim 5, wherein the outer wall of the sampling needle is provided with sampling length markings.