Negative pressure suction biopsy forceps

Abstract

A negative pressure suction biopsy forceps solves the problem that the current biopsy forceps are difficult to operate when biting tissues. The invention is characterized in that a sliding handle 5 is arranged at one end of a suction tube 4, a sliding handle holder 6 is arranged vertically in the middle of the sliding handle 5, the sliding handle holder 6 is slidably inserted into the suction tube 4, the other end of the suction tube 4 is connected to the biopsy tube 2, the other end of the biopsy tube 2 is connected to the biopsy cap 1, a stepped groove 7 is arranged at the end of the biopsy cap 1, a wire rope head fixer 8 is arranged beside the stepped groove 7, a wire rope positioning hole 9 is arranged above the stepped groove 7, one end of the wire rope 3 is fixed on the wire rope head fixer 8, the other end passes through the wire rope positioning hole 9, the biopsy cap 1, the biopsy tube 2, the suction tube 4 and is connected with the sliding handle holder 6, and a wire ring 10 is formed between the wire rope head fixer 8 at the end of the biopsy cap 1 and the wire rope positioning hole 9. The invention has the advantages of small head of the biopsy forceps, the target area is not blocked, and biopsy can be accurately performed in the target area. It has the advantages of high precision and good efficiency, and is particularly suitable for the application of endoscopic examination to obtain pathological specimens.

Description

Technical field:

[0001] The invention belongs to the technical field of medical device manufacturing, and in particular relates to a negative pressure suction biopsy forceps. Background technology:

[0002] As far as the inventor knows, currently biopsy forceps are indispensable tools for endoscopic examination to obtain pathological specimens. According to the experience of endoscopic examination in recent years, the existing biopsy forceps are bite-type biopsy forceps, and their working principle is that when the biopsy forceps are close to the biopsy tissue, the biopsy forceps are opened, the biopsy tissue is pressed against the biopsy tissue, and the biopsy forceps are closed to remove the biopsy tissue for examination. Its disadvantage is that: after the biopsy forceps are fully opened, part of the visual field is blocked, resulting in the target area being partially blocked, and it is impossible to accurately perform biopsy in the target area. The existing biopsy method requires a certain support force of the tissue. The biopsy forceps can only bite enough tissue if it is strongly pressed against the tissue. If the tissue is soft or without support, the biopsy forceps cannot be pressed against the tissue effectively, and it is impossible to take enough tissue for biopsy. The existing biopsy forceps need a certain angle for biopsy. If it is close to 180 degrees, that is, it is in a parallel state with the tissue, it is difficult to bite the defects of the tissue. Summary of the invention:

[0003] The purpose of the present invention is to make up for the above shortcomings. Its working principle is: the biopsy tissue is sucked into the closed biopsy lumen by negative pressure, and then the biopsy tissue sucked into the lumen is removed and sent for inspection using a steel wire. Its advantages are: simple structure, easy operation, the head of the biopsy forceps is a fixed circle, there is no need to open and close the biopsy forceps, the target area is basically not blocked, and the biopsy can be accurately performed in the target area. The biopsy adopts the negative pressure suction method to suck the tissue into the biopsy tube, and then cut it, and the tissue does not need to have a supporting force. The angle requirement is small during biopsy. Even at 180 degrees, as long as the gravitational force is sufficient, the tissue can be sucked into the biopsy lumen. It is safe and reliable, with high precision and obvious negative pressure suction biopsy forceps.

[0004] The technical solution of the present invention is implemented as follows: the negative pressure suction biopsy forceps is composed of a biopsy cap (1), a biopsy tube (2), a steel wire rope (3), a suction tube, a sliding handle (5), and a sliding handle support (6), characterized in that the sliding handle (5) is arranged at one end of the suction tube (4), the sliding handle support (6) is vertically arranged in the middle of the sliding handle (5), the sliding handle support (6) is slidably inserted into the suction tube (4), the other end of the suction tube (4) is connected to the biopsy tube (2), the other end of the biopsy tube (2) is connected to the biopsy cap (1), and the biopsy tube (2) is connected to the biopsy cap (1). A stepped groove (7) is arranged at the end of the cap (1), a wire rope head fixer (8) is arranged beside the stepped groove (7), a wire rope positioning hole (9) is arranged above the stepped groove (7), one end of the wire rope (3) is fixed on the wire rope head fixer (8), and the other end passes through the wire rope positioning hole (9), the biopsy cap (1), the biopsy tube (2), the suction tube (4) and is connected to the sliding handle support (6), and a wire ring (10) is formed between the wire rope head fixer (8) at the end of the biopsy cap (1) and the wire rope positioning hole (9).

[0005] Its working principle is to use negative pressure to suck the biopsy tissue into the wire ring 10 in the biopsy cap of the biopsy device, use the middle finger and index finger to pull the sliding handle 5, drive the sliding handle support 6, pull the wire rope 3, so that the wire ring 10 in the biopsy cap will shrink, remove the biopsy tissue, leave the biopsy tissue in the biopsy cap, and take the tissue out of the body through the endoscopic biopsy channel.

[0006] Compared with the prior art, the present invention has the following advantages: the head of the biopsy forceps is small, and there is no need to open and close the biopsy forceps. The target area is basically not blocked, and the biopsy can be accurately performed in the target area. The biopsy adopts negative pressure suction to draw the tissue into the biopsy channel, and then cut it, without the need for the tissue to have support. The angle requirement for biopsy is small. Even at 180 degrees, as long as the gravity is sufficient, the tissue can be drawn into the biopsy lumen. It has the advantages of simple and convenient operation, safety and reliability, high precision, and good effect. Description of the drawings:

[0007] Attached Figure 1 Schematic diagram of the structure of the present invention

[0008] Attached Figure 2 Schematic diagram of the biopsy cap structure of the present invention

[0009] Attached Figure 3 This is a schematic diagram of the handle structure of the present invention.

[0010] In the figure: 1. biopsy cap, 2. biopsy tube, 3. wire rope, 4. suction tube, 5. sliding handle, 6. sliding handle support, 7. stepped groove, 8. wire rope head fixer, 9. wire rope positioning hole, 10. wire ring. Specific implementation method:

[0011] The present invention will be further described in detail below with reference to the accompanying drawings. Figure 1 The negative pressure suction biopsy forceps shown in the figure are composed of a biopsy cap (1), a biopsy tube (2), a steel wire rope (3), a suction tube, a sliding handle (5), and a sliding handle support (6). The sliding handle (5) is provided at one end of the suction tube (4). Figure 3 The negative pressure suction biopsy forceps shown in the figure have a sliding handle support (6) vertically arranged in the middle of the sliding handle (5), the sliding handle support (6) is slidably inserted into the suction tube (4), the other end of the suction tube (4) is connected to the biopsy tube (2), and the other end of the biopsy tube (2) is connected to the biopsy cap (1), as shown in the attached Figure 2 The negative pressure suction biopsy forceps shown in the figure has a stepped groove (7) at the end of the biopsy cap (1), a wire rope head fixer (8) is provided next to the stepped groove (7), and a wire rope positioning hole (9) is provided above the stepped groove (7). One end of the wire rope (3) is fixed on the wire rope head fixer (8), and the other end passes through the wire rope positioning hole (9), the biopsy cap (1), the biopsy tube (2), the suction tube (4) and is connected to the sliding handle support (6), and a wire ring (10) is formed between the wire rope head fixer (8) at the end of the biopsy cap (1) and the wire positioning hole (9).

[0012] The implementation method is to use negative pressure to suck the biopsy tissue into the wire ring 10 in the biopsy cap of the biopsy device, use the middle finger and index finger to pull the sliding handle 5, drive the sliding handle support 6, pull the wire rope 3, so that the wire ring 10 in the biopsy cap will shrink, remove the biopsy tissue, leave the biopsy tissue in the biopsy cap, and bring the tissue out of the body through the endoscopic biopsy channel.

Claims

1. A negative pressure suction biopsy forceps, comprising a biopsy cap (1), a biopsy tube (2), a steel wire rope (3), a suction tube, a sliding handle (5), and a sliding handle support (6), characterized in that A sliding handle (5) is arranged at one end of the suction tube (4), a sliding handle support (6) is arranged vertically at the middle of the sliding handle (5), the sliding handle support (6) is slidably inserted into the suction tube (4), the other end of the suction tube (4) is connected to the biopsy tube (2), the other end of the biopsy tube (2) is connected to the biopsy cap (1), a stepped groove (7) is arranged at the end of the biopsy cap (1), a wire rope head fixer (8) is arranged beside the stepped groove (7), a wire rope positioning hole (9) is arranged above the stepped groove (7), one end of the wire rope (3) is fixed on the wire rope head fixer (8), and the other end passes through the wire rope positioning hole (9), the biopsy cap (1), the biopsy tube (2), the suction tube (4) and is connected to the sliding handle support (6), and a wire ring (10) is formed between the wire rope head fixer (8) at the end of the biopsy cap (1) and the wire rope positioning hole (9).

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