CN106333711A - Living kidney tissue puncturing sampling needle - Google Patents

Abstract

The invention discloses a living kidney tissue puncture sampling needle, which comprises a hollow puncture tube, a sampling hole is opened on the tube wall at the front end of the hollow puncture tube, and a sample storage tube is set inside the tube; There is a sample storage tank, and the edge of the tank is sharpened; the sampling hole and the sample storage tank are at the same axial position; the end of the hollow puncture tube is a solid pointed structure. By rotating the rotary cutting tube in the middle, the sample trapped in the sample storage tank is separated from the main body, and the trauma area is small. The end of the hollow puncture tube is a solid pointed structure, which can prevent tissue cells from entering the gap between the sample storage tube and the hollow puncture tube when piercing into the lesion organ, which is convenient for puncture. The invention can better solve the problems of complicated operation and large internal trauma of the existing kidney tissue puncture sampling needle.

Description

A living kidney tissue puncture sampling needle

technical field

The invention relates to the technical field of living body sampling devices, in particular to a living body kidney tissue puncture sampling needle.

Background technique

In clinical research and diagnosis, living body sampling is often used to sample the part to be studied or diagnosed. That is to take samples of the parts or tissues to be studied or analyzed, and then culture and test the taken samples to obtain convincing and targeted results or conclusions. In the application of extracting a small amount of samples, the biopsy needle is an important device, which is widely accepted for its small wound and flexible operation.

The kidney is an important metabolic organ of the human body. Kidney biopsy, referred to as kidney biopsy, is an important examination method to clarify the nature and pathological types of kidney diseases, determine treatment guidelines, and determine prognosis. It can be applied to the treatment of various symptoms such as asymptomatic hematuria, proteinuria, acute nephritis, primary nephrotic syndrome, secondary or hereditary nephritis.

The existing Chinese patent CN201010154334.6 provides a biopsy needle combination for bone puncture and examination of active tissues, including a solid puncture needle, a hollow tube sampling needle with a tapered tubular front end, and a needle tube parallel to the axis of the needle tube. A section opening, and a cutting knife arranged on one side of the section opening and extending tangentially along the circumference of the needle tube.

However, the above-mentioned technique is relatively complicated to use. First, the solid puncture needle and the working channel cannula must be inserted into the tissue, and then the solid puncture needle should be taken out, and the hollow tube sampling needle should be inserted from the end of the working channel catheter, and the hollow tube sampling needle should be rotated to make the target sample Separated from the tissue, pull out the hollow tube sampling needle and use a copper strip to draw the sample inside it. The operation of this technique is complicated, and it takes a long distance to absorb the sample inside it with a copper strip, which may cause some damage to the sample.

Contents of the invention

The object of the present invention is to provide a living kidney tissue puncture sampling needle, which solves the problems of complicated operation and large internal trauma of the existing kidney tissue puncture sampling needle.

In order to achieve the above object and achieve the above technical effect, the present invention solves the above problem through the following technical solutions:

A living kidney tissue puncture sampling needle, comprising a hollow puncture tube, a sampling hole is opened on the tube wall at the front end of the hollow puncture tube, and a sample storage tube is set in the tube; a sample storage tank is opened on the tube wall at the front end of the sample storage tube , the edge of the groove is sharpened; the sampling hole and the storage tank are at the same axial position.

The sampling needle of the present invention is a ring-shaped needle body, which is sequentially composed of a sample storage tube and a hollow puncture tube from the inside to the outside. The tubes are rotatable about their common axis. The blade structure is arranged at the notch of the sample storage tank, and the lesion in the sampling hole can be cut while the sample storage tank is rotated, and the cut tissue can be stored in the sample storage tank.

Insert the needle into the lesion tissue, due to the interaction between the pressure and the tissue, part of the lesion tissue will be trapped in the concave hole of the sampling hole, rotate the sample storage tube, and use the blade structure on the edge of the sample storage tank to separate the sample tissue from the body. Compared with the existing method of extending the cutting knife to the outside of the hollow tube and rotary cutting the lesion, this method has smaller wounds and a higher extraction rate of cutting products.

As an improvement of the aforementioned living kidney tissue puncture sampling needle of the present invention, the front end of the hollow puncture tube is a solid pointed structure, and the top of the sample storage tube is in contact with the inner side of the solid pointed structure. In this way, tissue cells can be prevented from entering the gap between the sample storage tube and the hollow puncture tube when puncturing into the lesion organ, which will affect the relative rotation of the sample storage tube and the hollow puncture tube; at the same time, the integrated design of the puncture section can keep the end surface smooth and facilitate puncture .

As an improvement of the aforementioned living kidney tissue puncture sampling needle of the present invention, the sampling hole is an arc-shaped concave hole. The lesion tissue forms a convex surface in the sampling hole due to the influence of the pressure in the body and the interaction between cells. The design of the arc-shaped concave hole can allow more tissue to enter the groove, and can also avoid the situation that the diseased hard tissue cannot enter the sampling hole.

As an improvement of the above-mentioned living kidney tissue puncture sampling needle of the present invention, the tail of the sample storage tube passes through the mouth of the hollow puncture tube, and the tail end is provided with a rotating handle. The sample storage tube beyond the hollow puncture tube body and the rotary handle at the end are arranged to facilitate the rotation operation.

As an improvement of the living kidney tissue puncture sampling needle of the present invention, a limit slider is provided on the wall of the tail of the sample storage tube, and a limit groove corresponding to the limit slider is provided on the inner wall of the tail end of the hollow puncture tube. Control the sample storage tube around the hollow puncture tube through the slider, which can ensure that the relative position of the sample storage tube and the hollow puncture tube is fixed during the puncture process, prevent non-target tissues from entering the groove, and prevent the target tissue from slipping from the groove during the extraction process. .

The beneficial effects of the present invention are:

1. By rotating the sample storage tube in the middle, the sample trapped in the sample storage tank is separated from the body, which is smaller than the existing cutting knife extended to the external hollow tube to rotary cut the lesion.

2. The front end of the hollow puncture tube is a solid pointed structure, and the top of the sample storage tube is in contact with the inner side of the solid pointed structure, which can prevent tissue cells from entering the gap between the sample storage tube and the hollow puncture tube when piercing into the lesion organ, affecting the storage tube and the hollow puncture tube. The relative rotation of the hollow puncture tube can keep the end surface smooth and facilitate puncture.

3. The arc-shaped concave hole is designed to allow more tissue to slide into the tank, improving the utilization rate of the sample storage tank.

The invention can better solve the problems of complicated operation and large internal trauma of the existing kidney tissue puncture sampling needle.

Description of drawings

Fig. 1 is a sectional view of a living kidney tissue puncture sampling needle;

Fig. 2 is a schematic diagram of a hollow puncture tube;

Fig. 3 is a schematic diagram of a sample storage tube;

Fig. 4 is a sectional view along line A-A in Fig. 1 .

Drawing number identification: 10, hollow puncture tube, 11, sampling hole, 12, handle, 121, limit slot, 20, sample storage tube, 21, sample storage tank, 211, blade, 22, rotary handle, 23, limit Slide block, 24, slide block groove.

detailed description

The present invention will be further described below in conjunction with the examples, but the present invention is not limited to the following examples.

A living kidney tissue puncture sampling needle described in this example, as shown in accompanying drawings 1 and 4, the needle body is a cylindrical ring-shaped structure, and from the inside to the outside are a sample storage tube 20 and a hollow puncture tube 10 in sequence.

As shown in accompanying drawings 1 and 2, the outermost hollow puncture tube 10 of the needle body is a hollow structure with an open tail, an arc-shaped sampling hole 11 is opened on the tube wall at the front end, and a ring-shaped handle 12 is provided at the tail. Its front end is a solid pointed structure, which is used to puncture the skin or tissue cortex. The end of the ring handle 12 of the hollow puncture tube 10 is provided with a limiting groove 121 .

As shown in accompanying drawings 1 and 3, the front part of the columnar sample storage tube 20 is provided with a sample storage tank 21 corresponding to the position of the arc-shaped sampling hole 11 at the front part of the hollow puncture tube 10, and both sides of the edge of the sample storage tank 21 have edges 211 . The tail of the sample storage tube 20 is longer than the hollow puncture tube 10, and a handle 22 is provided at the tail end.

As shown in accompanying drawings 1 , 2 and 3 , a slider groove 24 is provided at the contact portion between the tail of the sample storage tube 20 and the hollow puncture tube 10 , and the limit slider 23 can be slidably installed therein. Rotate the sample storage tube 20 to adjust the slider groove 24 to the position corresponding to the limit groove 121, and slide the limit slider 23 into the limit groove 121 to realize the fixation between the sample storage tube 20 and the hollow puncture tube 10, preventing The sample storage tube 20 and the hollow puncture tube 10 rotate relatively.

The working principle of this embodiment is:

Assemble the sample storage tube 20 into the hollow puncture tube 10, adjust the slider groove 24 to the position corresponding to the limit groove 121, slide the limit slider 23 into the limit groove 121, and at this time, the notch of the sample storage tank 21 is closed. The hollow puncture tube 10 covers.

After the needle penetrates into the lesion, slide the limit slider 23 out of the limit groove 121, rotate the sample storage tube 20 to connect the sample storage tank 21 with the sampling hole 11, part of the lesion tissue is trapped in the sample storage tank 21, and rotate the storage tube 20 to connect the sample storage tank 21 with the sampling hole 11. The blade 211 on the sample tube 20 cuts to realize the separation of the sample tissue and the body.

Rotate the sample storage tube 20 to close the sample storage tank 21, and slide the limit slider 23 into the limit groove 121 to prevent the sample from falling out. Finally, the needle body storing the sample is drawn out, and the sample in the sample storage tank 21 is extracted for inspection.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and modifications to these embodiments still fall within the protection scope of the present invention.

Claims (5)

1. a kind of Vivo of Renal tissue penetration sampling probe, including hollow puncture tube (10) it is characterised in that: described hollow puncture tube (10) thief hole (11) is offered on the tube wall of front end, suit stored one kind of tubes (20) in pipe；The tube wall of described stored one kind of tubes (20) front end On offer sample storage groove (21), the edge of groove puts the first edge on a knife or a pair of scissors (211)；Described thief hole (11) and sample storage groove (21) are in same axial position Put.

2. a kind of Vivo of Renal tissue penetration sampling probe according to claim 1 it is characterised in that: described hollow puncture tube (10) front end is solid prong structure, stored one kind of tubes (20) top and solid prong structure interior side contacts.

3. a kind of Vivo of Renal tissue penetration sampling probe according to claim 1 it is characterised in that: described thief hole (11) For arc shrinkage pool.

4. a kind of Vivo of Renal tissue penetration sampling probe according to any one of claims 1 to 3 it is characterised in that: Described stored one kind of tubes (20) afterbody passes through hollow puncture tube (10) mouth of pipe, and tail end is provided with swing handle (22).

5. a kind of Vivo of Renal tissue penetration sampling probe according to any one of claims 1 to 3 it is characterised in that: Described stored one kind of tubes (20) afterbody tube wall setting position limiting slide block (23), hollow puncture tube (10) tail end inwall setting and position limiting slide block (23) corresponding stopper slot (121).