CN111671473A

CN111671473A - Biopsy sampling device

Info

Publication number: CN111671473A
Application number: CN202010682215.1A
Authority: CN
Inventors: 郭林杰; 白帅; 胡兵
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-09-18

Abstract

The invention belongs to the technical field of medical instruments and discloses a biopsy sampling device which comprises a tube body, a negative pressure suction tube and a cutting unit, wherein the negative pressure suction tube is movably arranged in the tube body, and a negative pressure suction nozzle is arranged at one end part of the negative pressure suction tube, which extends out of the tube body; the cutting unit comprises two cutting plates which are oppositely arranged, the cutting plates are rotationally connected with the pipe body through connecting rods, blades are arranged on the cutting plates, the middle parts of the cutting plates are connected with the connecting seat through pull rods, and the connecting seat is sleeved on the negative pressure suction pipe in a sliding mode; according to the biopsy sampling device provided by the invention, the negative pressure suction nozzle is close to the tissue, the negative pressure suction pipe is pulled, the connecting seat is pushed to move after the negative pressure suction nozzle contacts the connecting seat, so that the two cutting plates move relatively until the blades are closed to cut the tissue, and sampling is finished.

Description

Biopsy sampling device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a biopsy sampling device.

Background

Endoscopy is currently an effective diagnostic means for various body cavity duct diseases, and clinically developed endoscopy comprises gastroscope, enteroscope, bronchoscope, cystoscope, hysteroscope, thoracoscope, laparoscope and the like, and is widely applied to diagnosis of body cavity mucosa diseases, including various acute and chronic inflammations, precancerous lesions, benign and malignant tumors, polyps, congenital malformations and the like. Endoscopy is an important tool in modern medical diagnostics. Endoscopy, however, does not define the nature of the lesion without pathological diagnosis.

At present, biopsy forceps are mostly adopted clinically to carry out sampling biopsy on suspicious lesions of body cavity mucosa, and in the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: first, the biopsy forceps are not deep enough to allow histopathological assessment of lesion infiltration depth. Endoscopic minimally invasive treatment of early digestive tract cancer (esophageal early cancer, stomach early cancer and colorectal early cancer) is a key quality scheme for reducing patient trauma and improving the life quality of patients at present. However, the premise of endoscopic treatment is that the lesion infiltration depth cannot be too deep, but the judgment of the lesion infiltration depth by preoperative noninvasive examination cannot be very accurate, and a tissue with sufficient depth cannot be obtained by a conventional biopsy mode to perform depth judgment. Second, the sampling depth is not sufficient to obtain the actual lesion tissue. In some cases, such as gastric lymphoma, gastric stromal tumor, etc., the lesion is located either subcutaneously or submucosally. Conventional biopsy can only be taken from the superficial layer of mucosa, so that the pathological diagnosis usually indicates a false negative result, so that a patient needs to repeatedly perform gastroscopy and biopsy, or misdiagnosis and treatment delay are caused; thirdly, after the biopsy forceps take a sample, if serious bleeding or suspicious perforation exists, a separate device is needed to clamp and close the sampling wound, and the operation is inconvenient.

Disclosure of Invention

The present invention aims to solve the above technical problem at least to some extent. Accordingly, the present invention is directed to a biopsy sampling device.

The technical scheme adopted by the invention is as follows:

a biopsy sampling device comprises a tube body, a negative pressure suction tube and a cutting unit, wherein the negative pressure suction tube is movably arranged in the tube body, and a negative pressure suction nozzle is arranged at one end part of the negative pressure suction tube, which extends out of the tube body; the cutting unit comprises two cutting plates which are oppositely arranged, the cutting plates are rotationally connected with the pipe body through connecting rods, blades are arranged on the cutting plates, the middle parts of the cutting plates are connected with the connecting seat through pull rods, and the connecting seat is sleeved on the negative pressure suction pipe in a sliding mode; and the negative pressure suction pipe is pulled, and the negative pressure suction nozzle is in contact with the connecting seat and then pushes the connecting seat to move so that the two cutting plates move relatively until the blade is closed.

Preferably, the cutting plates are also provided with slot plates, the slot plates are positioned on one sides of the blades, which are far away from the tube body, grooves are formed in the slot plates, and suturing nails are arranged between the grooves of the slot plates of the two cutting plates; the suturing nail comprises a bendable U-shaped part, two parallel sections of the U-shaped part are located in the clamping groove plate, and opposite occlusion parts are arranged at the end parts of the U-shaped part.

Preferably, one end of the pull rod is rotatably connected with the middle part of the cutting plate, and the other end of the pull rod is rotatably connected with the connecting seat.

Preferably, one end of the connecting rod is rotatably connected with the cutting plate, and the other end of the connecting rod is rotatably connected with the pipe body.

Preferably, the negative pressure suction pipe is communicated with a negative pressure source.

The invention has the beneficial effects that:

1. according to the biopsy sampling device provided by the invention, after the biopsy sampling device is positioned by the endoscope, the negative pressure suction nozzle is close to the tissue, then the negative pressure suction pipe is pulled, the negative pressure suction nozzle is retracted into the space between the two cutting plates, the tissue is pulled up, the negative pressure suction nozzle moves backwards to contact the connecting seat and then pushes the connecting seat to move so that the two cutting plates move relatively to be close to and attached, meanwhile, the blade is closed to cut the pulled tissue from the root part, the sampling is completed, the tissue is cut only after being pulled up by the negative pressure suction nozzle, the sampling depth is deeper than that of the traditional biopsy forceps, and the sampling of a muscle layer can be realized.

2. This biopsy sampling device still can set up the draw-in groove board installation on cutting the board and sew up the nail, cutting board relative movement, when the sample is accomplished in the blade closure, the draw-in groove board promotes to sew up the nail and sews up the tissue root, accomplishes when accomplishing the sample and sews up the processing, has simplified operation flow, has also guaranteed that sutured position can be under the wound, guarantees sutural precision.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a biopsy sampling device of the present invention.

Fig. 2 is an end elevation view of the cutting unit of the present invention.

In the figure: 1-a pipe body; 2-negative pressure suction pipe; 3, a negative pressure suction nozzle; 4-a connecting rod; 5-cutting the board; 6-a pull rod; 7-a connecting seat; 8-a blade; 9-a slot clamping plate; a 10-U shaped portion; 11-bite part.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is conventionally understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or the element which is indicated must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the present invention and drawings in the embodiments are understood in specific cases, and technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious for those skilled in the art that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

The invention is further described with reference to the following figures and specific examples.

As shown in fig. 1 and fig. 2, the main body of the biopsy sampling device of the present embodiment is a tube body 1, a negative pressure pipette 2 and a cutting unit, wherein the tube body 1 is hollow, the negative pressure pipette 2 penetrates through the inside of the tube body 1 and can be pulled along the inside of the tube body 1, and a negative pressure suction nozzle 3 is disposed at one end of the negative pressure pipette 2 extending out of the tube body 1.

The cutting unit includes two relative cutting boards 5 that set up, and the both ends of connecting rod 4 rotate with cutting board 5 and body 1 respectively and be connected, and the front end of cutting board 5 is equipped with blade 8, because cutting board 5 sets up in pairs, blade 8 also sets up in pairs. The middle part of cutting board 5 passes through pull rod 6 and links to each other with connecting seat 7, and the one end of pull rod 6 rotates with the middle part of cutting board 5 to be connected, and the other end rotates with connecting seat 7 to be connected. The connecting seat 7 is sleeved on the negative pressure suction pipe 2 in a sliding way.

Still be equipped with draw-in groove board 9 on cutting board 5, draw-in groove board 9 also sets up for in pairs, and draw-in groove board 9 is located one side that blade 8 deviates from body 1, has seted up flutedly on draw-in groove board 9, installs between the recess of two draw-in groove boards 9 of cutting board 5 and sews up the nail. The stitching nail comprises a bendable U-shaped part 10, two parallel sections of the U-shaped part 10 are positioned in the slot plate 9, and the end part of the U-shaped part 10 is provided with an opposite occlusion part 11. After the U-shaped portion 10 is pressed and bent, the engaging portion 11 may suture the tissue.

Before using, the position of the negative pressure suction pipe 2 is adjusted, so that the negative pressure suction nozzle 3 protrudes out of the front end (one end provided with the clamping groove plate 9) of the cutting plate 5, suturing nails are placed between the grooves of the clamping groove plate 9 to be fixed, and the negative pressure suction pipe 2 is communicated with a negative pressure source. In the use, after the endoscope is positioned, the negative pressure suction nozzle 3 is attached to the tissue, the negative pressure suction pipe 2 is pulled, the negative pressure suction nozzle 3 retracts into the space between the two cutting plates 5, the tissue is pulled up by the negative pressure suction nozzle, the negative pressure suction nozzle 3 moves backwards to contact the connecting seat 7 and then pushes the connecting seat 7 to move so that the two cutting plates 5 move relatively to be close to the joint, the tissue root is sutured by suturing nails under the pushing of the clamping groove plate 9, meanwhile, the tissue above the sutured root is cut off by closing the blade 8, and the sampling is completed.

As shown in fig. 2, the cutting plate 5 has an arc-shaped cross section, the blade 8, the slot plate 9 and the cutting plate 5 may be integrally formed, or may be respectively mounted on the cutting plate 5, as shown in fig. 1, the slot plate 9 and the blade 8 are both perpendicular to the length direction of the cutting plate 5.

The suturing nail is made of titanium alloy, the titanium alloy has excellent biological tissue compatibility, foreign body reaction or aseptic inflammation cannot be generated, meanwhile, the titanium alloy is not easy to corrode, and potential difference with tissues or body fluid cannot be generated.

It will be appreciated that each cutting plate 5 may be connected to the tubular body 1 by a plurality of links 4.

It can be understood that the outer diameter of the negative pressure suction pipe 2 is slightly smaller than the inner diameter of the pipe body 1, so that the negative pressure suction pipe 2 can be pulled in the pipe body 1.

The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims

1. A biopsy sampling device, comprising: the cutting device comprises a pipe body (1), a negative pressure suction pipe (2) and a cutting unit, wherein the negative pressure suction pipe (2) is movably arranged in the pipe body (1), and a negative pressure suction nozzle (3) is arranged at one end part of the negative pressure suction pipe (2) extending out of the pipe body (1); the cutting unit comprises two cutting plates (5) which are oppositely arranged, the cutting plates (5) are rotatably connected with the pipe body (1) through connecting rods (4), blades (8) are arranged on the cutting plates (5), the middle parts of the cutting plates (5) are connected with a connecting seat (7) through pull rods (6), and the connecting seat (7) is sleeved on the negative pressure suction pipe (2) in a sliding manner; the negative pressure suction pipe (2) is pulled, and the negative pressure suction nozzle (3) is in contact with the connecting seat (7) and then pushes the connecting seat (7) to move so that the two cutting plates (5) move relatively until the blades (8) are closed.

2. The biopsy sampling device of claim 1, wherein: the cutting plates (5) are also provided with slot plates (9), the slot plates (9) are positioned on one sides of the blades (8) departing from the tube body (1), grooves are formed in the slot plates (9), and suturing nails are arranged between the grooves of the slot plates (9) of the two cutting plates (5); the suturing nail comprises a bendable U-shaped part (10), two parallel sections of the U-shaped part (10) are positioned in the clamping groove plate (9), and the end part of the U-shaped part (10) is provided with an opposite occlusion part (11).

3. The biopsy sampling device of claim 1 or 2, wherein: one end of the pull rod (6) is rotatably connected with the middle part of the cutting plate (5), and the other end of the pull rod is rotatably connected with the connecting seat (7).

4. The biopsy sampling device of claim 1 or 2, wherein: one end of the connecting rod (4) is rotatably connected with the cutting plate (5), and the other end of the connecting rod is rotatably connected with the pipe body (1).

5. The biopsy sampling device of claim 1 or 2, wherein: the negative pressure suction pipe (2) is communicated with a negative pressure source.