Biopsy sampling device
By designing a biopsy sampling device for negative pressure straw and cutting unit, the problem of insufficient sampling depth of existing biopsy forceps is solved, and the depth sampling and suture treatment of the muscle layer is realized, which improves diagnostic accuracy and operation convenience.
Patent Information
- Application Number
- CN202010682215.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-15
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-07-15
AI Technical Summary
The existing biopsy forceps have insufficient sampling depth, which cannot accurately determine the depth of the lesion infiltration, which often leads to false negative diagnosis and inconvenience in operation, especially when the lesion is located in the submucosal layer or bleeding perforation, it needs to be treated separately.
A biopsy sampling device is designed, including a negative pressure straw and a cutting unit. The negative pressure suction nozzle is connected to the cutting board through a connecting rod and a tie rod. The blade is closed for tissue cutting, and a suture staple is installed on the cutting board for suture treatment to ensure sampling. Depth and stitching accuracy.
Deep sampling of the muscle layer is achieved, the operation process is simplified, the accuracy of pathological diagnosis is improved, and suture treatment is completed after sampling, reducing misdiagnosis and patient trauma.
Smart Images
Figure CN111671473B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a biopsy sampling device. Background Art
[0002] Endoscopic examination has become an effective diagnostic method for various diseases of the human body cavity. Clinical endoscopic examinations include gastroscopy, colonoscopy, tracheoscopy, cystoscopy, hysteroscopy, thoracoscopy and laparoscopy. It is widely used in the diagnosis of body cavity mucosal diseases including various acute and chronic inflammations, precancerous lesions, benign and malignant tumors, polyps, congenital malformations, etc. Endoscopic examination is an important tool for modern medical diagnosis. However, endoscopic examination cannot be separated from pathological diagnosis to clarify the nature of the lesion.
[0003] At present, biopsy forceps are often used in clinical practice to take samples of suspicious lesions in the body cavity mucosa for biopsy. In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: First, the sampling depth of the biopsy forceps is not enough, and it is impossible to make a pathological histological judgment on the depth of lesion infiltration. Endoscopic minimally invasive treatment of early digestive tract cancer (early esophageal cancer, early gastric cancer, early colorectal cancer) is currently a key quality solution to reduce patient trauma and improve the quality of life of patients. However, the premise of endoscopic treatment is that the depth of lesion infiltration cannot be too deep, but the current preoperative non-invasive examination to judge the depth of lesion infiltration is often not very accurate, and through conventional biopsy, it is impossible to obtain deep enough tissue to make a depth judgment. Second, the sampling depth is not enough, and it is impossible to obtain real lesion tissue. In some cases, such as gastric lymphoma, gastric stromal tumor, etc., the lesion is located under the epithelium or in the submucosal layer. Conventional biopsy can often only obtain the superficial layer of the mucosa, so the pathological diagnosis often indicates a false negative result, which requires the patient to undergo repeated gastroscopy and biopsy, or may cause misdiagnosis and delay the diagnosis and treatment of the disease; thirdly, after sampling with biopsy forceps, if there is severe bleeding or suspected perforation, separate equipment is required to clamp the sampling wound, which is inconvenient to operate. Summary of the invention
[0004] The present invention aims to solve the above technical problems at least to a certain extent. To this end, the present invention aims to provide a biopsy sampling device.
[0005] The technical solution adopted by the present invention is:
[0006] A biopsy sampling device comprises 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 a negative pressure suction nozzle is provided at one end of the negative pressure suction tube extending out of the tube body; the cutting unit comprises two cutting plates arranged opposite to each other, the cutting plates are rotatably connected to the tube body through a connecting rod, and blades are provided on the cutting plates. The middle part of the cutting plates is connected to a connecting seat through a pulling rod, and the connecting seat is slidably sleeved on the negative pressure suction tube; when the negative pressure suction tube is pulled, the negative pressure suction nozzle contacts the connecting seat and pushes the connecting seat to move, so that the two cutting plates move relative to each other until the blades are closed.
[0007] Preferably, the cutting board is also provided with a slot plate, which is located on the side of the blade away from the tube body, and a groove is provided on the slot plate, and a suture nail is installed between the grooves of the slot plates of the two cutting boards; the suture nail includes a bendable U-shaped portion, and two parallel sections of the U-shaped portion are located in the slot plate, and the ends of the U-shaped portion are provided with relative bite portions.
[0008] Preferably, one end of the pull rod is rotatably connected to the middle of the cutting plate, and the other end is rotatably connected to the connecting seat.
[0009] Preferably, one end of the connecting rod is rotatably connected to the cutting plate, and the other end is rotatably connected to the tube body.
[0010] Preferably, the negative pressure suction tube is connected to a negative pressure source.
[0011] The beneficial effects of the present invention are:
[0012] 1. A biopsy sampling device provided by the present invention, after positioning through an endoscope, brings the negative pressure suction nozzle close to the tissue, and then pulls the negative pressure suction tube, the negative pressure suction nozzle is then retracted between the two cutting plates, the tissue is pulled up, the negative pressure suction nozzle moves backward to contact the connecting seat, and then pushes the connecting seat to move so that the two cutting plates move relatively close to each other, and at the same time the blade closes and cuts off the pulled up tissue from the root to complete the sampling. Since the negative pressure suction nozzle cuts after pulling up the tissue, the sampling depth is deeper than that of traditional biopsy forceps, and sampling of the muscle layer can be achieved.
[0013] 2. The biopsy sampling device can also be provided with a slot plate on the cutting plate to install suture staples. When the cutting plate moves relatively and the blade closes to complete sampling, the slot plate pushes the suture staples to suture the root of the tissue. The suturing process is completed while the sampling is completed, which simplifies the operation process and ensures that the sutured part can be under the wound, ensuring the accuracy of the suture. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a cross-sectional view of the biopsy sampling device of the present invention.
[0016] Figure 2 It is an end elevation view of the cutting unit of the present invention.
[0017] In the figure: 1-tube body; 2-negative pressure suction tube; 3-negative pressure suction nozzle; 4-connecting rod; 5-cutting plate; 6-pull rod; 7-connecting seat; 8-blade; 9-slot plate; 10-U-shaped part; 11-biting part. DETAILED DESCRIPTION
[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations.
[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.
[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0021] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention and the drawings in the embodiments can be understood according to specific circumstances, and the technical solutions in the embodiments of the present invention can be clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.
[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0024] like Figure 1 and Figure 2 As shown, a biopsy sampling device of this embodiment has a main body consisting of a tube body 1, a negative pressure suction tube 2 and a cutting unit, wherein the tube body 1 is hollow, the negative pressure suction tube 2 passes 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 provided at one end of the negative pressure suction tube 2 extending out of the tube body 1.
[0025] The cutting unit includes two cutting plates 5 arranged opposite to each other, and the two ends of the connecting rod 4 are rotatably connected to the cutting plates 5 and the tube body 1 respectively. 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 are also arranged in pairs. The middle of the cutting plate 5 is connected to the connecting seat 7 through a pull rod 6. 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. The connecting seat 7 is slidably sleeved on the negative pressure suction tube 2.
[0026] The cutting plate 5 is also provided with a slot plate 9, which is also arranged in pairs. The slot plate 9 is located on the side of the blade 8 away from the tube body 1. The slot plate 9 is provided with a groove, and a suture staple is installed between the grooves of the slot plates 9 of the two cutting plates 5. The suture staple includes a bendable U-shaped portion 10, and two parallel sections of the U-shaped portion 10 are located in the slot plate 9. The ends of the U-shaped portion 10 are provided with opposite bite portions 11. After the U-shaped portion 10 is squeezed and bent, the bite portion 11 can suture the tissue.
[0027] Before use, adjust the position of the negative pressure suction tube 2 so that the negative pressure suction nozzle 3 protrudes from the front end of the cutting plate 5 (that is, one end of the card slot plate 9), place the suture nail between the grooves of the card slot plate 9 so that it is fixed, and the negative pressure suction tube 2 is connected to the negative pressure source. During use, after positioning through the endoscope, the negative pressure suction nozzle 3 is placed close to the tissue, and then the negative pressure suction tube 2 is pulled, and the negative pressure suction nozzle 3 is retracted into the space between the two cutting plates 5. The tissue is pulled up by the negative pressure suction nozzle, and the negative pressure suction nozzle 3 moves backward to contact the connecting seat 7 and pushes the connecting seat 7 to move so that the two cutting plates 5 move relatively close to each other. Under the push of the card slot plate 9, the suture nail sutures the root of the tissue, and at the same time, the blade 8 closes to cut off the tissue above the sutured root to complete the sampling.
[0028] like Figure 2 As shown, the cross section of the cutting board 5 is arc-shaped, and the blade 8, the slot plate 9 and the cutting board 5 can be integrally formed or separately mounted on the cutting board 5, such as Figure 1 As shown, the slot plate 9 and the blade 8 are both perpendicular to the length direction of the cutting plate 5 .
[0029] Suture staples are made of titanium alloy, which has excellent bio-tissue compatibility and will not produce foreign body reactions or cause aseptic inflammation. At the same time, titanium alloy itself is not easily corroded and does not produce a potential difference with tissues or body fluids.
[0030] It can be understood that each cutting plate 5 can be connected to the tube body 1 via a plurality of connecting rods 4 .
[0031] It can be understood that the outer diameter of the negative pressure suction tube 2 is slightly smaller than the inner diameter of the tube body 1 so that the negative pressure suction tube 2 can be pulled inside the tube body 1 .
[0032] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.
Claims
1. A biopsy sampling device, characterized in that: The invention comprises 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). 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 comprises two cutting plates (5) arranged opposite to each other. The cutting plates (5) are rotatably connected to the tube body (1) through a connecting rod (4). A blade (8) is provided on the cutting plate (5). The middle part of the cutting plate (5) is connected to a connecting seat (7) through a pulling rod (6). The connecting seat (7) is slidably sleeved on the negative pressure suction tube (2). The cutting plate (5) is also provided with a slot plate. (9), the slot plate (9) is located on the side of the blade (8) away from the tube body (1), the slot plate (9) is provided with a groove, and a suture nail is installed between the grooves of the slot plates (9) of the two cutting plates (5); the negative pressure suction tube (2) is pulled, and the tissue is pulled up by the negative pressure suction nozzle (3), and the negative pressure suction nozzle (3) contacts the connecting seat (7) and pushes the connecting seat (7) to move so that the two cutting plates (5) move relative to each other until the blade (8) is closed; under the push of the slot plate (9), the suture nail sutures the root of the tissue, and at the same time, the blade (8) closes to cut off the tissue above the sutured root.
2. The biopsy sampling device according to claim 1, characterized in that: The suture nail comprises a bendable U-shaped portion (10), two parallel sections of the U-shaped portion (10) are located in the slot plate (9), and opposite bite portions (11) are provided at the ends of the U-shaped portion (10).
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 to the cutting plate (5), and the other end is rotatably connected to the pipe body (1).
5. The biopsy sampling device according to claim 1 or 2, characterized in that: The negative pressure suction pipe (2) is connected to a negative pressure source.