Sucker type biopsy sampler

Abstract

The utility model discloses a suction cup type biopsy sampler which comprises a suction cup body, the suction cup body is matched with a mirror body of an endoscope, the suction cup body is hollow, and at least one negative pressure adsorption hole is formed in the bottom face of the suction cup body and used for enabling target tissue needing to be sampled to be sucked into a cavity of the suction cup body under the negative pressure effect. According to the suction cup type biopsy sampler, a non-invasive and low-trauma tissue sampling scheme is provided by combining a negative pressure adsorption technology with a flexible tissue fixing and separating mechanism, and the suction cup type biopsy sampler is suitable for intracavitary operations such as alimentary canal biopsy and the like. The equipment not only can improve the precision of biopsy operation, but also can remarkably reduce wounds to patients, and has a wide clinical application prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a biopsy device for endoluminal operation in the department of gastroenterology. BACKGROUND

[0002] The existing digestive tract biopsy apparatus mainly uses biopsy forceps or puncture needles to obtain tissue samples through cutting or clamping. Although these devices can complete the sampling operation, they often cause damage to the target tissue and the surrounding tissue due to the need for mechanical cutting or puncture, especially for fragile diseased tissue, which may cause bleeding or complications.

[0003] There is currently no effective solution to the problem of greater tissue damage in the prior art. SUMMARY

[0004] To solve the above problems, the utility model provides a suction cup type biopsy sampler, which fixes and separates the target tissue after suctioning the target tissue by negative pressure, so as to realize the cutting of the target tissue, obtain complete samples, and reduce the damage to the tissue.

[0005] To achieve the above purpose, the utility model provides a suction cup type biopsy sampler, which comprises:

[0006] A suction cup body is adapted to the scope of an endoscope, the suction cup body is hollow, and at least one negative pressure suction hole is formed in the bottom surface of the suction cup body for suctioning the target tissue to be sampled into the cavity of the suction cup body under the action of negative pressure;

[0007] A tissue fixing unit is arranged in the cavity of the suction cup body for fixing the target tissue after being suctioned into the cavity;

[0008] A tissue separation unit is arranged at one end of the suction cup body for separating the suctioned target tissue from the surrounding tissue.

[0009] Further, it further comprises a negative pressure suction system;

[0010] The negative pressure suction system comprises an operating handle and a connecting pipeline;

[0011] The operating handle is connected to the suction cup body through one end of the connecting pipeline and connected to an external negative pressure device through the other end of the connecting pipeline.

[0012] Further, the operating handle is provided with a suction strength adjusting button and a separation operation button;

[0013] The adsorption strength adjusting button is electrically connected with the negative pressure adsorption system, and is used for adjusting the adsorption strength of the negative pressure adsorption system.

[0014] The separation operation button is electrically connected with the tissue separation unit, and is used for controlling the operation of the tissue separation unit.

[0015] Further, the tissue fixing unit is a fixing ring, and the fixing ring is made of flexible material.

[0016] The outer surface of the fixing ring is matched with the inner surface of the suction disc body, and the inner surface of the fixing ring is elastic, so that the target tissue can be fixed.

[0017] Further, the tissue separation unit comprises a supporting ring and a plurality of supporting legs.

[0018] The supporting ring is arranged at one end of the suction disc body, and the plurality of supporting legs are arranged at intervals along the center direction of the supporting ring.

[0019] Further, the side surface of the supporting leg is a cutting edge, which is used for cutting and separating the target tissue from the surrounding tissue after the target tissue is sucked into the cavity of the suction disc body and is fixed by the fixing ring.

[0020] Further, the inside of the suction disc body is provided with a freezing probe, which is used for freezing and separating the target tissue from the surrounding tissue after the target tissue is sucked into the cavity of the suction disc body and is fixed by the fixing ring.

[0021] Further, the diameter of the suction disc body is 2-5mm.

[0022] Further, the fixing ring is a hexagonal structure, and the material between the inner surface and the outer surface of the fixing ring is also flexible.

[0023] Further, the operation handle is provided with a vibration feedback device, which is used for giving feedback to the user when the target tissue is successfully adsorbed into the sample collection container.

[0024] The above technical scheme has the following beneficial effects: the suction disc type biopsy sampler realizes a non-invasive and low-trauma tissue sampling scheme by combining the negative pressure adsorption technology with the flexible tissue fixing and separation mechanism, and is suitable for digestive tract biopsy and other intracavity operations. The device not only can improve the precision of biopsy operation, but also can significantly reduce the trauma to the patient, and has wide clinical application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the technical solutions obtained by the embodiments or the description will be described below, and obviously, the described embodiments can be implemented by the specific embodiments of the present application. The suction cup biopsy sampler provided by the present application has the following advantages and novel features.

[0026] Figure 1 is a structural schematic diagram of the suction cup biopsy sampler provided by the embodiment of the present application;

[0027] Figure 2 is an exploded view of the suction cup biopsy sampler provided by the embodiment of the present application;

[0028] Figure 3a , b is a structural schematic diagram of the suction cup main body provided by the embodiment of the present application;

[0029] Figure 4 is a structural schematic diagram of the tissue fixing unit provided by the embodiment of the present application;

[0030] Figure 5a , b is a structural schematic diagram of the sample collection container provided by the embodiment of the present application;

[0031] Figure 6 is a structural schematic diagram of the operation handle provided by the embodiment of the present application;

[0032] Figure 7 is a structural schematic diagram of the tissue separation unit provided by the embodiment of the present application;

[0033] Figure 8 is a schematic diagram of the probe of the endoscope cooperating with the suction cup biopsy sampler provided by the embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to solve the problem of large tissue damage when the tissue is clamped or cut in the prior art, the present application provides a suction cup biopsy sampler, Figure 1 is a structural schematic diagram of the suction cup biopsy sampler provided by the embodiment of the present application,

[0035] As Figures 1 to 7 indicated, the suction cup biopsy sampler comprises a suction cup main body 3, a negative pressure adsorption system (not shown), an operation handle 1 and a sample collection container 2. The suction cup main body 3 is a hollow structure, the top surface is provided with an enlarged head 35 for positioning the target tissue, the bottom surface is provided with at least one negative pressure adsorption hole 34, and the top surface and the bottom surface are connected by an intermediate part 36 for accommodating the sample collection container 2, so as to facilitate adsorption of the digestive tract mucosa or shallow tissue sample under the action of negative pressure.

[0036] The operating handle 1 is provided with a mounting member 11 which is matched with the positioning hole 32 of the suction disc body, so as to connect the operating handle 1 with the suction disc body 3.

[0037] 1. Operation of the negative pressure adsorption system

[0038] The negative pressure adsorption system is the key part of the utility model, which provides adsorption force for the suction disc body 3 through an external negative pressure device. When the endoscope sends the suction disc body 3 into the digestive tract and reaches the target sampling position, the operator controls the negative pressure system through the adsorption strength adjusting button (not shown) on the operating handle 1 to start the adsorption operation. The negative pressure system transmits the negative pressure to the hollow cavity of the suction disc body 3 through the connecting pipeline 13, so that the target tissue is sucked into the suction disc body 3 through the negative pressure adsorption hole 34.

[0039] The sample collection container 2 is arranged in the negative pressure adsorption hole 34 in the cavity of the suction disc body 3, and the sample collection container 2 is provided with a connecting joint 22. The negative pressure adsorption system connects the connecting joint 22 on the sample collection container 2 in the negative pressure adsorption hole 34 through the connecting pipeline 13 in the operating handle 1, and provides negative pressure for the sample collection container 2 in the negative pressure adsorption hole 34.

[0040] The strength of the negative pressure can be accurately adjusted through the button on the handle, so as to avoid that the target tissue is excessively pulled or torn due to too large adsorption force. In the actual operation process, the doctor can flexibly adjust the negative pressure through the adsorption strength adjusting button, so as to ensure that enough tissue samples can be obtained without causing damage to the surrounding tissue. At this time, the adsorbed tissue is fixed in the tissue fixing unit 4.

[0041] 2. Action of the tissue fixing unit

[0042] As shown in Figures 1 to 7 The inside of the suction disc body 3 is provided with a tissue fixing unit 4 for fixing the sucked target tissue at a proper position. The structure of the tissue fixing unit 4 is a fixing ring made of flexible material, the outer surface 41 of the fixing ring is attached to the inner surface of the suction disc body 3, and the inner surface 43 has elasticity and can fix the target tissue, so as to ensure that the target tissue can be stably kept in the cavity of the suction disc body 3 after being adsorbed to the position and does not displace or slip off.

[0043] In one embodiment, the fixing ring is a hexagonal structure, and the transition zone 42 between the inner surface 43 and the outer surface 41 of the fixing ring is also made of flexible material

[0044] The flexible fixing ring has good biocompatibility, can avoid causing damage to the fragile digestive tract tissue, and at the same time ensures that the tissue is kept stable in the negative pressure adsorption process, so as to facilitate the subsequent separation operation.

[0045] 3. Working mechanism of the tissue separation unit 5

[0046] The tissue separation unit 5 is a key component for cutting and separating the target tissue from the surrounding tissue. Once the target tissue is adsorbed and fixed in place, the separation operation button (not shown) on the operating handle 1 is activated, triggering the support foot 51 of the tissue separation unit 5. Specifically, as... Figure 7 As shown, the tissue separation unit 5 includes a support ring 52 and multiple support feet 51 disposed at one end of the suction cup body 3. The support ring 52 is disposed around the edge of the suction cup body 3, and the multiple support feet 51 are distributed at intervals along the central direction of the support ring 52.

[0047] At the start of the separation operation, a cutting blade 512 is mounted on the side of the support foot 51 for precisely cutting the target tissue adsorbed in the fixation ring 4. The design of the cutting blade 512 ensures that it can accurately separate the required tissue sample without damaging the surrounding healthy tissue. This cutting method is more precise than traditional mechanical biopsy forceps, ensuring the integrity of the sample and reducing damage to surrounding tissues.

[0048] In one embodiment, the support foot 51 is fixed to the support ring 52 by a rotating shaft 511.

[0049] In addition to the cutting method, the suction cup body 3 can also be equipped with a cryoprobe 33, which can further reduce tissue damage through cryo-separation. After contacting the tissue, the cryoprobe 33 rapidly cools down to separate the adsorbed target tissue from the surrounding tissue, ensuring the integrity and high quality of the sample.

[0050] The freezing probe 33 obtains frozen material (which can be liquid, gas, or tiny solid particles) through the freezing channel 12 in the operating handle 1.

[0051] 4. Sample transfer and collection

[0052] The sample collection container 2 is located inside the cavity of the suction cup body 3. After tissue separation is completed, the cut or frozen tissue sample will directly enter the sample collection container 2. The sample collection container 2 is provided with an opening 21, through which the cut or frozen tissue sample enters the sample collection container 2.

[0053] In one embodiment, the sample collection container 2 has a sealed design with a cap (not shown) at one end, ensuring that the sample is not contaminated or damaged by the external environment during transport. The sample collection container 2 is suitable for subsequent pathological analysis, maintaining the integrity and freshness of the sample.

[0054] The operation handle 1 is further provided with a vibration feedback device (not shown), when the target tissue is successfully adsorbed and transmitted to the sample collection container, the operation handle 1 can give the operator a prompt through vibration feedback, and the precision and success rate of operation are ensured. The vibration feedback device greatly improves the reliability of operation and reduces the possibility of misoperation.

[0055] 5. Applicable scope and deformation

[0056] The suction cup type biopsy sampler of the utility model is suitable for sampling operation under various endoscopes. According to the needs of different organs or lesion sites, the diameter of the suction cup body 3 can be adjusted between 2mm to 5mm, and the size and number of the bottom surface negative pressure adsorption hole 34 can also be designed and adjusted according to specific application scenarios. For example, in gastroscopy operation, the diameter of the suction cup can be larger to ensure that it can effectively adsorb the relatively hard stomach wall tissue; and in colonoscopy operation, the suction cup can be designed to be smaller to enter the narrow colon more flexibly to collect polyp or tumor samples.

[0057] In addition, the connecting pipeline 13 of the negative pressure adsorption system and the structure of the operation handle 1 can also be adjusted according to different models of endoscopes to ensure that the equipment can be used with various models of endoscopes.

[0058] Application of the suction cup type biopsy sampler in gastroscopy operation:

[0059] During gastroscopy, doctors often need to biopsy the gastric mucosa in the lesion area. Traditional biopsy forceps are easy to cause damage to the stomach wall, especially when the lesion tissue is relatively fragile, the operation is difficult, and complications such as bleeding are easy to occur. The suction cup type biopsy sampler of the utility model can effectively reduce this risk.

[0060] The operation steps are as follows:

[0061] As shown in Figure 8 , first, connect the probe 6 of the endoscope with the suction cup type biopsy sampler, the endoscope probe 6 includes an endoscope lens 61 and an inner cavity for accommodating the suction cup body 3 of the suction cup type biopsy sampler, and the suction cup body 3 is sent into the target area of the stomach through the endoscope;

[0062] When the probe 6 of the endoscope is connected with the suction cup type biopsy sampler, the suction cup body 3 of the suction cup type biopsy sampler protrudes slightly than the endoscope lens 61, so that the endoscope lens 61 can see the sampling process of the suction cup body 3.

[0063] After the endoscope lens 61 confirms the position of the target lesion tissue, start the negative pressure adsorption system, adjust the adsorption strength through the operation handle 1, and adsorb the lesion tissue to the inside of the suction cup body 3;

[0064] After the target tissue is sucked in, the support foot 51 of the tissue separation unit 5 is started by operating the separation button on the handle 1, the diseased tissue is cut and separated;

[0065] Subsequently, the cut tissue sample is directly sent to the sample collection container 2, and the sampling operation is completed;

[0066] After receiving the vibration feedback of the operation handle 1, the operator confirms the success of the sample collection, and removes the sample collection container 2 and the endoscope from the body.

[0067] In this embodiment, the use of the suction cup biopsy sampler can reduce the trauma to the stomach wall, improve the success rate and sample quality of the sampling, and is suitable for biopsy operation of various gastric lesions.

[0068] Application of the suction cup biopsy sampler in colonoscopy:

[0069] In colonoscopy operation, polyps are common sampling targets, but polyps are often fragile, and traditional biopsy methods can easily cause polyp damage or bleeding. The use of the suction cup biopsy sampler in this embodiment can effectively reduce these problems.

[0070] The specific operation steps are similar to those of gastroscope:

[0071] The suction cup body 3 is sent to the surface of the target polyp in the colon through the endoscope;

[0072] The polyp surface tissue is adsorbed into the suction cup body 3 by starting the negative pressure adsorption system;

[0073] The frozen probe 33 of the tissue separation unit 5 is started, and the adsorbed polyp tissue is separated by freezing, reducing the risk of bleeding during operation;

[0074] Finally, the sample is directly transferred to the sample collection container 2, ensuring the integrity.

[0075] Through this operation, the polyp sample can be completely and safely obtained, and the bleeding and damage during operation are greatly reduced.

[0076] Through the detailed description of the above embodiments, the suction cup biopsy sampler of the present application can effectively solve the tissue damage problem caused by traditional biopsy instruments, significantly improve the safety, accuracy and success rate of the sampling operation, and is particularly suitable for tissue sampling operation in endoluminal surgery of the digestive tract.

Claims

1. A suction cup biopsy sampler, characterized in that, include: The suction cup body is adapted to the endoscope body. The suction cup body is hollow and has at least one negative pressure suction hole on the bottom surface, which is used to allow the target tissue to be sampled to be sucked into the cavity of the suction cup body under negative pressure. A tissue fixation unit is disposed within the cavity of the suction cup body and is used to fix the target tissue after it is sucked into the cavity. A tissue separation unit is disposed at one end of the suction cup body and is used to separate the sucked target tissue from the surrounding tissue.

2. The suction cup biopsy sampler according to claim 1, characterized in that, Also includes: Negative pressure adsorption system; The negative pressure adsorption system includes: an operating handle and connecting pipes; The operating handle is connected to the suction cup body at one end through the connecting pipe, and to an external negative pressure device at the other end through the connecting pipe.

3. The suction cup biopsy sampler according to claim 2, characterized in that: The operating handle is equipped with an adsorption intensity adjustment button and a separation operation button; The adsorption intensity adjustment button is electrically connected to the negative pressure adsorption system and is used to adjust the adsorption intensity of the negative pressure adsorption system. The separation operation button is electrically connected to the tissue separation unit and is used to control the operation of the tissue separation unit.

4. The suction cup biopsy sampler according to claim 1, characterized in that: The tissue fixation unit is a fixation ring, and the fixation ring is made of a flexible material; The outer surface of the fixing ring is in contact with the inner surface of the suction cup body, and the inner surface of the fixing ring is elastic, which can fix the target tissue.

5. The suction cup biopsy sampler according to claim 4, characterized in that: The tissue separation unit includes: a support ring and multiple support legs; The support ring is disposed at one end of the suction cup body; the multiple support feet are spaced apart along the center direction of the support ring.

6. The suction cup biopsy sampler according to claim 5, characterized in that: The side of the support foot is a cutting blade, which is used to cut and separate the target tissue from the surrounding tissue after the target tissue is sucked into the cavity of the suction cup body and fixed by the fixing ring.

7. The suction cup biopsy sampler according to claim 6, characterized in that: The suction cup body is equipped with a freezing probe, which is used to freeze and separate the target tissue from the surrounding tissue after the target tissue is sucked into the cavity of the suction cup body and fixed by the fixing ring.

8. The suction cup biopsy sampler according to claim 1, characterized in that: The diameter of the suction cup body is 2-5mm.

9. The suction cup biopsy sampler according to claim 4, characterized in that: The fixing ring has a hexagonal structure, and the material between the inner and outer surfaces of the fixing ring is also a flexible material.

10. The suction cup biopsy sampler according to claim 2, characterized in that: The operating handle is equipped with a vibration feedback device, which provides feedback to the user when the target tissue is successfully adsorbed into the sample collection container.

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