CN111772687A - A biopsy needle for endoscopy - Google Patents

Abstract

The invention discloses a biopsy needle used under an endoscope, which comprises a hollow needle head, wherein the rear end of the hollow needle head is connected with the front end of an outer sleeve, a biopsy cabin is arranged in the outer sleeve and is connected with a transmission mechanism, the transmission mechanism pushes the biopsy cabin along the axis of the outer sleeve, the front end of the hollow needle head is provided with a cutting edge, the biopsy cabin comprises a base body and a sample cabin arranged on the base body, a convex ridge in the front of the base body is provided with a cutting edge, the edge of the sample cabin is provided with a cutting edge, and the transverse size of the biopsy cabin is smaller than the inner diameter. The invention can extract the position of lesion growth on the side of the observation lens or a lateral development type tumor sample.

Description

A biopsy needle for endoscopy

technical field

The invention relates to a medical instrument, in particular to a biopsy needle for endoscopy.

Background technique

Digestive endoscopy is often used to take biopsies. Sometimes, because the lesion grows on the side of the observation lens or is a laterally developing tumor, the currently used biopsy forceps are difficult to adjust to the best angle for biopsy, or even unable to clamp. Pick.

SUMMARY OF THE INVENTION

The present invention aims to provide a biopsy needle for endoscopy, which can extract a tumor sample with a lesion growing on the side of the observation lens or a laterally developed tumor sample.

To achieve the above object, the present invention adopts the following technical solutions to realize:

The biopsy needle for endoscopy disclosed in the present invention comprises a hollow needle, the rear end of the hollow needle is connected to the front end of the outer sleeve, the outer sleeve is provided with a biopsy chamber, the biopsy chamber is connected to the transmission mechanism, the The transmission mechanism pushes the biopsy chamber along the axis of the outer sleeve, the front end of the hollow needle is provided with a cutting edge, the biopsy chamber includes a base body and a sample chamber opened on the base body, and the front ridge of the base body is provided with a cutting edge, the The edge of the sample chamber is provided with a cutting edge, and the transverse dimension of the biopsy chamber is smaller than the inner diameter of the hollow needle.

Further, the outer sleeve is provided with a negative pressure interface.

Preferably, the base body is strip-shaped, the front part of the base body is pyramid-shaped, the edge is provided with a cutting edge, and the top and one side of the sample compartment are open.

Preferably, the front part is a quadrangular pyramid, the outer contour of other parts of the base body except the front part is a cuboid, and the four long sides of the cuboid are respectively connected with the four edges of the quadrangular pyramid.

Preferably, the biopsy capsule is manufactured in one piece.

Preferably, the transmission mechanism includes a connecting piece, a telescopic mechanism and an operation part that are connected in sequence, the biopsy capsule is connected with the connecting piece, and the telescopic direction of the telescopic mechanism is the axial direction of the outer sleeve.

Preferably, the telescopic mechanism includes at least one diamond-shaped telescopic mechanism, and the connecting member and the operating portion are respectively connected to two opposite ends of the diamond-shaped telescopic mechanism.

Preferably, the operating portion is a sliding handle, and the sliding handle is slidably connected to the outer sleeve.

Further, the rear end of the outer sleeve is connected to a fixed handle.

Preferably, the connector is a guide wire.

The using method of the present invention is as follows:

1. After the target lesion is found, hold the fixed handle to deliver the hollow needle and the front of the outer sleeve to the vicinity of the lesion through the endoscopic biopsy port, adjust the position, and pierce the hollow needle into the lesion.

2. Pull the sliding handle, and send the biopsy chamber through the outer cannula and the hollow needle, and the biopsy chamber exceeds the needle.

3. Push the sliding handle to demobilize its position, and the biopsy capsule returns to the outer cannula from the needle cavity.

4. Pull the fixed handle to make the hollow needle withdraw from the lesion, and then withdraw the biopsy needle from the endoscopic biopsy hole.

5. The whole process is connected to negative pressure suction to prevent the sample in the biopsy chamber from coming out through the outer cannula and needle hole.

6. Take out the samples in the sample warehouse for inspection.

The beneficial effects of the present invention are as follows:

1. The present invention can extract the position of the lesion growth on the side of the observation lens or a laterally developed tumor sample.

2. The operation of the present invention is simple and reliable.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of biopsy cabin;

3 is a schematic structural diagram of a diamond-shaped telescopic mechanism;

FIG. 4 is a schematic view of the structure of the sliding handle part.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2 , the biopsy needle for endoscopy disclosed in the present invention includes a hollow needle 1, the rear end of the hollow needle 1 is connected to the front end of an outer sleeve 2, and the outer sleeve 2 is provided with a biopsy chamber 3, The biopsy chamber 3 is connected to a transmission mechanism, and the transmission mechanism pushes the biopsy chamber 3 along the axis of the outer sleeve. The front end of the hollow needle 1 is provided with a cutting edge. The biopsy chamber 3 includes a base body 32 and a sample chamber 33 opened on the base body. A cutting edge 34 is provided on the convex corrugation of the part 31 , a cutting edge 34 is provided on the edge of the sample chamber 33 , the transverse dimension of the biopsy chamber 3 is smaller than the inner diameter of the hollow needle 1 , and the outer sleeve 2 is provided with a negative pressure interface 6 .

Specifically: the base body 32 is strip-shaped, the front part 31 of the base body 32 is a pyramid, preferably a quadrangular pyramid, the edge is provided with a cutting edge 34, the outer contour of the other parts of the base body 32 except the front part 31 is a cuboid, The four long sides are respectively connected with the four edges of the quadrangular pyramid; the top and one side of the sample chamber 33 are open; the biopsy chamber 3 is made in one piece. The transmission mechanism includes a connecting piece 4 , a telescopic mechanism 5 and an operation part 7 connected in sequence. The rear end of the base body 32 of the biopsy capsule 3 is connected with the connecting piece 4 , and the telescopic direction of the telescopic mechanism 5 is the axial direction of the outer sleeve.

As shown in FIG. 3 , the telescopic mechanism 5 includes at least one diamond-shaped telescopic mechanism, the connecting member 4 and the operating portion 7 are respectively connected to two opposite ends of the diamond-shaped telescopic mechanism, and the connecting member 4 is a guide wire. The rhombus telescopic mechanism includes four sides 51 , the adjacent sides 51 are hinged through pins 52 , and two opposite ends are respectively connected with connecting rods 53 .

As shown in FIG. 4 , the operation part 7 is a sliding handle, and the sliding handle is slidably connected with the outer sleeve 2 . The rear end of the outer sleeve 2 is connected to the fixed handle 8 .

Of course, the present invention can also have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformation should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. a biopsy needle under endoscope is characterized in that: comprise a hollow needle, the rear end of the hollow needle is connected to the front end of an outer sleeve, the outer sleeve is provided with a biopsy cabin, and the biopsy cabin is connected to a transmission Mechanism, the transmission mechanism pushes the biopsy chamber along the axis of the outer sleeve, the front end of the hollow needle is provided with a cutting edge, the biopsy chamber includes a base body and a sample chamber opened on the base body, and the front ridge of the base body is provided with a cutting edge The mouth of the sample chamber is provided with a cutting edge, and the transverse dimension of the biopsy chamber is smaller than the inner diameter of the hollow needle. 2 . The biopsy needle for endoscopy according to claim 1 , wherein the outer sleeve is provided with a negative pressure interface. 3 . 3. The biopsy needle for endoscopy according to claim 1 or 2, characterized in that: the base body is in the shape of a bar, the front part of the base body is a pyramid shape, the edge is provided with a cutting edge, and the top of the sample chamber is and one side open. 4 . The biopsy needle for endoscopy according to claim 3 , wherein the front part is a quadrangular pyramid, the outer contour of the other parts of the base body except the front part is a rectangular parallelepiped, and the four strips of the rectangular parallelepiped The long sides are respectively connected with the four edges of the quadrangular pyramid. 5 . The biopsy needle for endoscopy according to claim 5 , wherein the biopsy capsule is integrally manufactured. 6 . 6. The biopsy needle for endoscopy according to claim 1 or 2, wherein the transmission mechanism comprises a connecting piece, a telescopic mechanism and an operating portion connected in sequence, the biopsy cabin is connected with the connecting piece, and the The telescopic direction of the telescopic mechanism is the axial direction of the outer sleeve. 7 . The biopsy needle for endoscopy according to claim 6 , wherein the telescopic mechanism comprises at least one diamond-shaped telescopic mechanism, and the connector and the operating portion are respectively connected to two opposite ends of the diamond-shaped telescopic mechanism. 8 . 8 . The biopsy needle for endoscopic use according to claim 6 , wherein the operation part is a sliding handle, and the sliding handle is slidably connected to the outer sleeve. 9 . 9 . The biopsy needle for endoscopy according to claim 8 , wherein the rear end of the outer sleeve is connected to a fixed handle. 10 . 10 . The biopsy needle for endoscopic use according to claim 6 , wherein the connecting member is a guide wire. 11 .

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