CN111671473A - A biopsy sampling device - Google Patents

Abstract

The invention belongs to the technical field of medical devices, and discloses a biopsy sampling device, comprising a tube body, a negative pressure suction tube and a cutting unit, the negative pressure suction tube is movably installed in the tube body, and one end of the negative pressure suction tube extending out of the tube body is provided with a negative pressure suction tube Press the suction nozzle; the cutting unit includes two oppositely arranged cutting plates, the cutting plates are rotatably connected with the pipe body through the connecting rod, the cutting plate is provided with a blade, the middle part of the cutting plate is connected with the connecting seat through the pull rod, and the connecting seat is slidably sleeved on On the negative pressure suction tube; in the biopsy sampling device provided by the present invention, the negative pressure suction nozzle is close to the tissue, the negative pressure suction tube is pulled, and after the negative pressure suction nozzle contacts the connecting seat, the connecting seat is pushed to move so that the two cutting plates move relatively until the blades are closed to remove the tissue. Cut off and complete the sampling. Because the negative pressure suction nozzle pulls the tissue up before cutting, the sampling depth is deeper than that of the traditional biopsy forceps, and the muscle layer can be sampled.

Description

A biopsy sampling device

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a biopsy sampling device.

Background technique

Endoscopy has now become an effective diagnostic method for various human body cavity duct diseases. Clinical endoscopy includes gastroscopy, colonoscopy, bronchoscopy, cystoscopy, hysteroscopy, thoracoscopy and laparoscopy. It is widely used. For the diagnosis of body cavity mucosal diseases, including various acute and chronic inflammations, precancerous lesions, benign and malignant tumors, polyps, congenital malformations and other diseases. Endoscopy is an important tool for modern medical diagnosis. However, endoscopy is inseparable from the pathological diagnosis to clarify the nature of the lesion.

At present, biopsy forceps are often used clinically to sample and biopsy suspicious lesions of the body cavity mucosa. In the process of realizing the present invention, the inventor found that at least the following problems exist in the prior art: first, the sampling depth of the biopsy forceps is not enough to infiltrate the lesions. In-depth histopathological judgment. Endoscopic minimally invasive treatment of early gastrointestinal cancer (early esophageal cancer, early gastric cancer, and early colorectal cancer) is currently a key quality plan to reduce patient trauma and improve the quality of life of patients. However, the premise of endoscopic treatment is that the depth of invasion of the lesion should not be too deep, but the current non-invasive preoperative examination to determine the depth of invasion of the lesion often cannot be very accurate, and conventional biopsy methods cannot obtain deep enough tissue. to make in-depth judgments. Second, the sampling depth is not enough to obtain the real diseased tissue. In some cases, such as gastric lymphoma, gastric stromal tumor, etc., the lesions are located in the subepithelial, or submucosa. Conventional biopsy, however, often only takes the superficial layer of the mucosa. Therefore, the pathological diagnosis often indicates false negative results, which requires the patient to perform gastroscope and biopsy repeatedly, which may lead to misdiagnosis and delay the diagnosis and treatment of the disease. Third, biopsy forceps for sampling Afterwards, if there is severe bleeding or suspected perforation, a separate device is required to clamp the sampling wound, which is inconvenient to operate.

SUMMARY OF THE INVENTION

The present invention aims to solve the above-mentioned technical problems at least to a certain extent. To this end, the present invention aims to provide a biopsy sampling device.

The technical scheme adopted in the present invention is:

A biopsy sampling device includes a tube body, a negative pressure suction tube and a cutting unit, the negative pressure suction tube is movably installed in the tube body, and one end of the negative pressure suction tube extending out of the tube body is provided with a negative pressure suction nozzle; Two cutting boards, the cutting board is connected with the pipe body through the connecting rod in rotation, the cutting board is provided with a blade, the middle part of the cutting board is connected with the connecting seat through the pull rod, and the connecting seat is slidably sleeved on the negative pressure straw; After the negative pressure suction nozzle touches the connecting seat, it pushes the connecting seat to move so that the two cutting boards move relative to each other until the blades are closed.

Preferably, the cutting board is further provided with a slot plate, the slot plate is located on the side of the blade away from the pipe body, the slot plate is provided with a groove, and the slot plate of the two cutting boards is installed between the grooves There is a suture; the suture comprises a bendable U-shaped part, two parallel sections of the U-shaped part are located in the slot plate, and the end of the U-shaped part is provided with an opposite occlusal part.

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

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

Preferably, the negative pressure suction pipe communicates with a negative pressure source.

The beneficial effects of the present invention are:

1. In a biopsy sampling device provided by the present invention, after positioning through the endoscope, the negative pressure suction nozzle is placed close to the tissue, and then the negative pressure suction tube is pulled, and the negative pressure suction nozzle is retracted between the two cutting plates accordingly, and the tissue After being 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 boards move relative to each other and close to fit. The suction nozzle pulls up the tissue before cutting, and the sampling depth is deeper than that of the traditional biopsy forceps, which can realize the sampling of the muscle layer.

2. The biopsy sampling device can also set a slot plate on the cutting board to install suture nails. When the cutting board moves relatively and the blade is closed to complete the sampling, the slot plate pushes the suture nail to suture the root of the tissue, and the sampling is completed at the same time. The suture treatment simplifies the operation process, and also ensures that the sutured part can be under the wound, ensuring the accuracy of the suture.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

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

Figure 2 is an end elevational view of the cutting unit of the present invention.

In the figure: 1-pipe body; 2-negative pressure suction pipe; 3-negative pressure suction nozzle; 4-connecting rod; 5-cutting plate; 6-tie rod; 7-connecting seat; 8-blade; 10-U-shaped part; 11-bite part.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the accompanying drawings, or the azimuth or positional relationship that the product of the invention is usually placed in use, or the present invention. Orientation or positional relationships commonly understood by those skilled in the art are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood to limit the present invention. In addition, the terms "first" and "second" are only used to differentiate the description, and should not be construed as indicating or implying relative importance.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, they can understand the specific meanings of the above terms in the present invention and the accompanying drawings in the embodiments, and clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the description The embodiments described above are part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 and FIG. 2 , a biopsy sampling device in this embodiment has a main body of a tube body 1 , a negative pressure suction tube 2 and a cutting unit, wherein the tube body 1 is hollow, and the negative pressure suction tube 2 passes through the interior of the tube body 1 , can be pulled along the inside of the tube body 1, and a negative pressure suction nozzle 3 is provided at one end of the negative pressure suction tube 2 extending out of the tube body 1.

The cutting unit includes two oppositely arranged cutting plates 5, the two ends of the connecting rod 4 are respectively connected with the cutting plate 5 and the pipe body 1 in rotation, and the front end of the cutting plate 5 is provided with a blade 8. Since the cutting plates 5 are arranged in pairs, the blades 8 Also set for pairs. The middle part of the cutting board 5 is connected with the connecting base 7 through a pull rod 6 , one end of the pulling rod 6 is rotatably connected with the middle part of the cutting board 5 , and the other end is rotatably connected with the connecting base 7 . The connecting seat 7 is slidably sleeved on the negative pressure suction pipe 2 .

The cutting board 5 is also provided with a slot plate 9, and the slot plate 9 is also arranged in pairs. The slot plate 9 is located on the side of the blade 8 away from the pipe body 1. The slot plate 9 is provided with a groove. A staple is installed between the grooves of the card slot plate 9 of the plate 5 . The staple includes a bendable U-shaped portion 10 , two parallel sections of the U-shaped portion 10 are located in the slot plate 9 , and the end of the U-shaped portion 10 is provided with an opposite engaging portion 11 . After the U-shaped portion 10 is squeezed and bent, the bite portion 11 can suture the tissue.

Before use, adjust the position of the negative pressure suction pipe 2 so that the negative pressure suction nozzle 3 protrudes from the front end of the cutting board 5 (the end with the card slot plate 9), and place the staple in the groove of the card slot plate 9. Therefore, it is fixed during the time, and the negative pressure suction pipe 2 is communicated with the negative pressure source. During use, after positioning through the endoscope, place the negative pressure suction nozzle 3 close to the tissue, and then pull the negative pressure suction tube 2, the negative pressure suction nozzle 3 is then retracted into the space between the two cutting plates 5, and the tissue is sucked by the negative pressure. The mouth is pulled up, 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 boards 5 move relatively close to fit. At the same time, the blade 8 is closed to cut off the tissue above the sutured root to complete the sampling.

As shown in FIG. 2 , the section of the cutting board 5 is arc-shaped, and the blade 8 , the slotted board 9 and the cutting board 5 can be integrally formed, or can be installed on the cutting board 5 respectively. As shown in FIG. 1 , the slotted board Both 9 and the blade 8 are perpendicular to the length of the cutting board 5 .

The staple is made of titanium alloy. Titanium alloy has excellent bio-histocompatibility and will not produce foreign body reaction or cause aseptic inflammation. At the same time, titanium alloy itself is not easily corroded, and there is no potential difference with tissue or body fluids.

It can be understood that each cutting board 5 can be connected to the pipe body 1 through a plurality of connecting rods 4 .

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

The present invention is not limited to the above-mentioned optional embodiments, and anyone can draw other various forms of products under the inspiration of the present invention, but no matter what changes are made in its shape or structure, all fall within the definition of the claims of the present invention. The technical solutions within the scope all fall within the protection scope of the present invention.

Claims (5)

1. A biopsy sampling device is characterized in that: comprising a tube body (1), a negative pressure suction tube (2) and a cutting unit, the negative pressure suction tube (2) is movably installed in the tube body (1), and the negative pressure suction tube ( 2) A negative pressure suction nozzle (3) is provided at one end extending out of the pipe body (1); the cutting unit includes two cutting plates (5) arranged oppositely, and the cutting plates (5) are connected to the pipe body through the connecting rod (4). (1) Rotating connection, the cutting plate (5) is provided with a blade (8), the middle of the cutting plate (5) is connected with the connecting seat (7) through the pull rod (6), and the connecting seat (7) slides under the negative pressure Put on the suction pipe (2); pull the negative pressure suction pipe (2), the negative pressure suction nozzle (3) contacts the connecting seat (7) and then push the connecting seat (7) to move so that the two cutting boards (5) move relative to each other until the blade (8) closure. 2. The biopsy sampling device according to claim 1, characterized in that: the cutting plate (5) is further provided with a slot plate (9), and the slot plate (9) is located on the blade (8) away from the tube body (9). 1) on one side, the slot plate (9) is provided with grooves, and a suture nail is installed between the grooves of the slot plate (9) of the two cutting boards (5); the suture nail includes a bendable U. A shaped portion (10), the two parallel sections of the U-shaped portion (10) are located in the slot plate (9), and the end of the U-shaped portion (10) is provided with an opposite engaging portion (11). 3. The biopsy sampling device according to claim 1 or 2, characterized in that: one end of the pull rod (6) is rotatably connected to the middle of the cutting plate (5), and the other end is rotatably connected to the connecting seat (7). 4. The biopsy sampling device according to claim 1 or 2, characterized in that: one end of the connecting rod (4) is rotatably connected with the cutting plate (5), and the other end is rotatably connected with the tube body (1). 5. The biopsy sampling device according to claim 1 or 2, wherein the negative pressure suction tube (2) is communicated with a negative pressure source.

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