Digestive tract tumor biopsy sampling device

Abstract

The invention relates to the technical field of medical instruments, in particular to a digestive tract tumor biopsy sampling device which comprises a cylinder, a driving assembly arranged on the cylinder, forceps beaks symmetrically arranged on the driving assembly, a pump assembly and a communication module, extension plates are in sliding fit with the two sides of the forceps beaks, hoses are arranged in the forceps beaks, and the pump assembly is connected with the pump assembly. Permanent magnets are symmetrically arranged on the outer side walls of the hoses, a collecting assembly is arranged at the end, away from the pump assembly, of any hose and comprises an elastic pipe, one end of the elastic pipe is communicated with the adjacent hose, and the other end of the elastic pipe is communicated with a sampling needle; the elastic tube is connected with the sampling needle, a baffle plate made of an elastic material is arranged at the communication part of the elastic tube and the sampling needle, the elastic modulus of the baffle plate and the elastic modulus of the hose are both greater than that of the elastic tube, the sampling needle is in sliding fit with the forceps beak, a plurality of mesh wires made of an elastic material are arranged in the elastic tube, and the mesh wires are wave-shaped. And the device can adapt to different sampling scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a digestive tract tumor biopsy sampling device. Background Art

[0002] Gastrointestinal tumor biopsy sampling technology is an important means of diagnosing gastrointestinal diseases. It takes tissue samples from suspected tumor sites in the digestive tract and performs pathological examinations to determine the nature, extent and scope of the diseased tissue, providing a key basis for early detection, accurate diagnosis and effective treatment of the disease. In modern medicine, gastrointestinal pathological biopsy, as an important diagnostic method, plays a vital role in the early detection, accurate diagnosis and effective treatment of gastrointestinal diseases. As a major category of gastrointestinal diseases, early detection and accurate diagnosis of gastrointestinal tumors have a decisive impact on the treatment and prognosis of patients. Therefore, the development and improvement of gastrointestinal tumor biopsy sampling technology is of great significance to improving the diagnosis and treatment of gastrointestinal tumors.

[0003] The existing biopsy schemes for digestive tract tumors mainly include: conventional biopsy, that is, during the digestive endoscopy, the doctor selects the appropriate biopsy point for biopsy according to the patient's condition and the location of the lesion. It is often used to detect inflammation, ulcers, polyps and other lesions of the digestive tract mucosa, and is also suitable for the preliminary diagnosis of some digestive tract tumors; deep biopsy. This method uses special deep biopsy forceps to take a small piece of tissue from the deep tissue of the gastrointestinal mucosa for biopsy. It is suitable for discovering lesions deep in the gastrointestinal mucosa, such as tumors, inflammatory bowel disease, etc., especially for tumors located deep in the gastrointestinal mucosa, deep biopsy can obtain deeper lesion tissue and improve the accuracy of diagnosis; targeted biopsy, the doctor selects the lesion site for biopsy according to the patient's medical history, clinical manifestations and imaging examination results. It is often used to discover early tumors and precancerous lesions of the gastrointestinal mucosa. Targeted biopsy can locate the lesion site more accurately, reduce the number of unnecessary biopsies, and reduce the patient's pain and risk; brush and scraper, use a special brush or scraper to scrape a small piece of tissue or cells from the surface of the gastrointestinal mucosa for biopsy Physical examination is often used to detect lesions on the surface of the gastrointestinal mucosa, such as inflammation, erosion, and bleeding. However, this method obtains a small amount of samples and may not be able to fully reflect the nature and extent of the lesions. Endoscopic ultrasound-guided fine needle aspiration biopsy (EUS-FNA / FNB) uses the real-time exploration function of the ultrasound endoscope to accurately determine the location and nature of the lesion, and then performs fine needle puncture to obtain tissue samples for pathological examination. It is suitable for lesions that are difficult to be effective with conventional biopsies, such as pancreatic tumors. Compared with EUS-FNA, EUS-FNB can obtain more and more complete tissue samples, thereby improving the accuracy of diagnosis. Other special biopsy techniques, such as tunnel (deep digging) biopsy technology, large biopsy technology (EMR), tumor biopsy technology (ESD), etc.

[0004] When using the above biopsy scheme, the most commonly used sampling tools are biopsy forceps and sampling needles, which are inserted into the patient's digestive tract through the endoscopic forceps channel to sample tissue. Because the patient's cancerous tissue has different shapes and sizes, medical staff need to change and use different sampling tools according to the state of the patient's cancerous tissue before inserting the sampling device, which undoubtedly increases the work steps of medical staff and is also likely to increase the pain of patients. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a digestive tract tumor biopsy sampling device, which is used to adjust the device according to the location, shape and size of the patient's cancerous lesions, so that the device can adapt to different sampling scenarios.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a digestive tract tumor biopsy sampling device, comprising a barrel, a driving assembly is provided on the barrel, and a forceps beak is symmetrically provided on the driving assembly, the driving assembly is used to drive the two forceps beaks to rotate, and also includes a pump assembly and a communication module, both sides of the forceps beaks are slidably matched with extension plates, and hoses are provided in the forceps beaks, the hoses are connected with the pump assembly, and a first solenoid valve is provided at the connection point, and permanent magnets are symmetrically provided on the outer wall of the hoses, and the permanent magnets are used to drive adjacent extension plates to move synchronously, and a collection assembly is provided at one end of any hose away from the pump assembly, and the collection assembly includes an elastic tube, one end of the elastic tube is connected with an adjacent hose, and the other end of the elastic tube is connected with a sampling needle, a one-way valve is provided at the connection point between the hose and the elastic tube, and a baffle made of elastic material is provided at the connection point between the elastic tube and the sampling needle, the elastic modulus of the baffle and the hose are greater than that of the elastic tube, the sampling needle and the forceps beak are slidably matched, a plurality of meshes made of elastic material are provided in the elastic tube, the meshes are all wavy, and the meshes are all entangled with adjacent meshes, and the other end of the hose away from the pump assembly is closed; It also includes a control system, which is used to receive image information collected by the endoscope, and determine the actual sampling distance of the side of the two adjacent extension plates away from the forceps beak and the size and shape of the tumor according to the image information, and determine the sampling state required by the device according to the tumor shape; When using forceps beak for sampling, the predicted sampling width is determined according to the tumor size and compared with the actual sampling distance. When the actual sampling distance is smaller than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to work, and the permanent magnets are driven to move in directions away from each other by pumping fluid into the hose. When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When the actual sampling distance is larger than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to work, and the fluid in the hose is extracted, and the permanent magnets are attracted to each other. When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When using the sampling needle to take samples, the pump assembly and the corresponding first solenoid valve are controlled to work, and the fluid in the hose is extracted to drive the elastic tube to deform. When the sampling needle is exposed outside the beak of the forceps, the control communication module alarms the user and controls the pump assembly to increase the working power.

[0007] Furthermore, a test assembly is provided on the hose with one end closed away from the pump assembly, and the test assembly includes an outer tube, the outer tube is fixedly connected to the hose, a test block is slidably fitted inside the outer tube, and a spring is provided inside the outer tube. The control system is also used to determine the pressure on the end of the forceps beak away from the driving assembly according to the change of air pressure in the outer tube, and controls the communication module to alarm the user only when the pressure is greater than the set value.

[0008] Further, the control system includes a controller and a first air pressure sensor; The first air pressure sensor is used to collect first air pressure information in the outer tube; The controller is used to receive image information collected by the endoscope, and use the image information to determine the actual sampling distance of the side of the two adjacent extension plates away from the forceps beak, as well as the size and morphology of the tumor, and determine the sampling state required by the device according to the tumor morphology; when using the forceps beak for sampling, the predicted sampling width is determined according to the tumor size, and compared with the actual sampling distance. When the actual sampling distance is less than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to work, and the permanent magnets are driven to move in directions away from each other by pumping fluid into the hose. When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When the actual sampling distance is less than the predicted sampling width, the control unit is used to control the communication module to alarm the user. When the sampling distance is greater than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to operate to extract the fluid in the hose, the permanent magnets attract each other, and when the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user; when a sampling needle is used for sampling, the pump assembly and the corresponding first solenoid valve are controlled to operate to extract the fluid in the hose to cause the elastic tube to deform, and when the sampling needle is exposed outside the beak of the forceps, the communication module is controlled to alarm the user. The controller is also used to obtain the pressure at the end of the beak of the forceps away from the driving assembly according to the first air pressure information, and the communication module is controlled to alarm the user only when the pressure is greater than a preset value.

[0009] Furthermore, the controller is also used to determine the abnormal area according to the change in pressure, and control the communication module to output abnormal information to the user according to the image information.

[0010] Furthermore, the controller is used to predict the location of tissues with abnormal risks based on the abnormal information, generate guiding tasks based on the prediction results, and control the communication module to output the guiding tasks to the user.

[0011] Furthermore, it also includes a limit assembly, which includes a test plate, air bags are provided on both sides of the test plate, and the test plate and the air bags are both arranged in the cylinder, the test plate is fixedly connected to the drive assembly, and the drive assembly can also drive the test plate to move while driving the two beaks to rotate; The control system also includes several second air pressure sensors, which are used to collect second air pressure information in the airbag. The controller determines the direction and distance of movement of the test plate according to the change of the second air pressure information, and determines the angle of rotation of the forceps beak according to the direction and distance of movement of the test plate. The controller is also used to control the communication module to alarm the user according to the angle of rotation of the forceps beak.

[0012] Furthermore, the airbags are all connected to the pump assembly, and a second solenoid valve is provided at the connection point. The controller is also used to control the operation of the pump assembly and the second solenoid valve according to the second air pressure information.

[0013] Furthermore, the controller is also used to control the operation of the pump assembly and the second solenoid valve according to the image information.

[0014] Furthermore, the controller is also used to control the operation of the pump assembly and the second solenoid valve according to the first air pressure information and the image information.

[0015] Furthermore, the controller is also used to judge whether the user has completed the guidance task based on the first air pressure information, the image information and the guidance task, and control the communication module to output prompt information to the user only when the user has not completed the guidance task.

[0016] Technical principles and beneficial effects of the above scheme: 1. This solution, through the design of the hose and the permanent magnet, uses a pump assembly to adjust the air pressure inside the hose. By increasing the air pressure, the interaction force between some of the permanent magnets is offset, causing the two permanent magnets to move away from each other, thereby driving the extension plate to protrude from the beak of the pliers, extending the area that the beak of the pliers can clamp. By reducing the air pressure inside the hose, it is difficult for the gas inside the hose to drive the permanent magnets to move away from each other. The permanent magnets approach each other under the action of their own magnetic force, driving the extension plate to enter the beak of the pliers, thereby reducing the area that the beak of the pliers can clamp. Compared with the prior art, the present solution can adjust the clamping area of ​​the beak of the forceps within the patient's body, so that the clamping area of ​​the beak of the forceps is more in line with the patient's tumor status, thereby improving the accuracy of sample collection. Since the extension plate can be retracted into the beak of the forceps, when the device is inserted through the endoscopic forceps channel, compared with biopsy forceps with the same clamping area, the present device is smaller in size, and the collision area and possibility with the endoscopic forceps channel are also reduced, which is beneficial to provide certain protection for the beak of the forceps, etc., to avoid damage to the beak of the forceps and the forceps channel device, causing damage to the hinge point between the beak of the forceps or the cylinder, etc., thereby affecting subsequent sampling.

[0017] 2. This solution, through the design of elastic tube, mesh and baffle, uses the pump assembly to reduce the air pressure in the elastic tube, thereby causing the elastic tube to compress the mesh. The mesh deformation pushes the sampling needle out of the beak of the forceps, making it easier for users to sample tumors. Compared with the existing technology, this solution can still maintain a certain sampling capacity when facing some solutions that require the use of sampling needles for sampling, so that this solution has a certain universality, which is conducive to reducing the cost of a single use of the device. At the same time, there is no need for users to select the sampling device before the device is inserted into the patient's digestive tract, which reduces the requirements of the sampling technology on the user's professional quality, and is also conducive to improving the convenience of the device, thereby improving the acceptance of the device among target users.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An axonometric diagram of an embodiment of a digestive tract tumor biopsy sampling device of the present invention; Figure 2 A top view of an embodiment of a digestive tract tumor biopsy sampling device of the present invention; Figure 3 for Figure 2 Middle AA section; Figure 4 for Figure 1 Axonometric view of the beak of the forceps; Figure 5 for Figure 1 A front view of the beak of the forceps; Figure 6 for Figure 5 Middle CC section; Figure 7 for Figure 3 The enlarged view of point B in the middle; Figure 8 for Figure 6 The enlarged view of point D in the middle; Fig. 9 for Figure 8 Schematic diagram of the mesh in; Fig.10 The figure is a circuit diagram of an embodiment of a digestive tract tumor biopsy sampling device of the present invention.

[0020] The figure marks in the drawings of the specification include: 1. beak of the forceps; 11. extension plate; 12. hose; 13. permanent magnet; 14. one-way valve; 15. elastic tube; 16. mesh; 17. baffle; 18. sampling needle; 19. test assembly; 191. test block; 192. outer tube; 193. spring; 2. drive assembly; 21. handle; 22. adjustment handle; 23. pull rod; 24. connecting rod; 3. cylinder; 4. limit assembly; 41. airbag; 42. test plate. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The following is further described in detail through specific implementation methods: Embodiment 1:

[0025] As attached Figure 1 -Attached Fig.10As shown: a digestive tract tumor biopsy sampling device, including a barrel 3, on which a driving assembly 2 is provided, the driving assembly 2 includes a pull rod 23 and a handle 22, the pull rod 23 is provided with a connecting rod 24 at one end away from the handle 22, the connecting rod 24 is arranged along the axis of the barrel 3, the connecting rods 24 are hinged to the pull rod 23, the pull rod 23 is hinged at one end away from the connecting rod 24 with an adjusting handle 21, the adjusting handle 21 is hinged to the barrel 3, and a torsion spring is provided at the hinge of the two, one end of the torsion spring is welded and fixed to the adjusting handle 21, and the other end of the torsion spring is welded and fixed to the barrel 3, the handle 22 is welded and fixed to the outer wall of the barrel 3, the pull rod 23 is hinged with a forceps beak 1, and the forceps beak 1 is hinged to the barrel 3, and the driving assembly 2 is used to drive the two forceps beaks 1 to rotate around the forceps beak hinge point.

[0026] It also includes a pump assembly and a communication module. In this embodiment, the pump assembly is an air pump (not shown in the figure). Extension plates 11 are slidably matched on both sides of the forceps beak 1, and hoses 12 are provided in the forceps beak 1. The hoses 12 are connected to the pump assembly, and a first solenoid valve is provided at the connection point. Permanent magnets 13 are symmetrically provided on the outer side walls of the hoses 12. The permanent magnets 13 are welded and fixed to adjacent extension plates 11. The permanent magnets 13 are used to drive adjacent extension plates 11 to move synchronously. A collection assembly is provided at one end of any hose 12 away from the pump assembly. The collection assembly includes an elastic tube 15. One end of the elastic tube 15 is connected to the adjacent hose 12, and the other end of the elastic tube 15 is connected to a sampling needle 18. The hose 12 and the elastic tube 15 are connected. A one-way valve 14 is provided at the connection point, and a baffle 17 made of elastic material is provided at the connection point between the elastic tube 15 and the sampling needle 18. The sampling needle 18 and the elastic tube 15 are detachably connected. The elastic modulus of the baffle 17 and the hose 12 are both greater than that of the elastic tube 15. The sampling needle 18 and the beak 1 of the forceps are slidably matched. A plurality of meshes 16 made of elastic material are provided in the elastic tube 15. The meshes 16 are all wavy and are intertwined with adjacent meshes 16. One end of the other hose 12 away from the pump assembly is closed. A test assembly 19 is provided on the hose 12 with one end closed away from the pump assembly. The test assembly 19 includes an outer tube 192. The outer tube 192 is bonded and fixed to the hose 12. A test block is slidably matched in the outer tube 192. 191, and a spring 193 is arranged in the outer tube 192, one end of the spring 193 is welded and fixed to the test block 191, and the other end of the spring 193 is welded and fixed to the inner wall of the outer tube 192, and also includes a control system, the control system includes a controller and a first air pressure sensor (not shown in the figure); the first air pressure sensor is used to collect the first air pressure information in the outer tube 192; the first air pressure sensor, the endoscope, the pump assembly, the first solenoid valve and the communication module are all electrically connected to the controller, the controller is used to receive the image information collected by the endoscope, and judge the actual sampling distance of the two adjacent extension plates 11 away from the side of the forceps beak 1 and the tumor size and morphology according to the image information, and judge the sampling distance required by the device according to the tumor morphology. Status; when using the forceps beak 1 to take samples, the predicted sampling width is determined according to the size of the tumor, and the actual sampling distances of the two adjacent extension plates 11 away from the side of the forceps beak 1 are compared. When the actual sampling distance is less than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to work, and the permanent magnet 13 is driven to move in directions away from each other by pumping fluid into the hose 12. When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When the actual sampling distance is greater than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to work, and the fluid in the hose 12 is extracted, and the permanent magnets 13 attract each other. When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user.When sampling is performed using the sampling needle 18, the pump assembly and the corresponding first solenoid valve are controlled to work, and the fluid in the extraction hose 12 drives the elastic tube 15 to deform. When the sampling needle 18 is exposed outside the forceps beak 1, the control communication module alarms the user. The controller is also used to obtain the pressure on the end of the forceps beak 1 away from the driving assembly 2 according to the first air pressure information, and the control communication module alarms the user only when the pressure is greater than the preset value. ;

[0027] The specific implementation process is as follows: when used in conjunction with an endoscope, the endoscope is first placed into the patient's digestive tract. After the position to be sampled is detected, the user moves the adjustment handle 21 closer to the grip 22, thereby driving the connecting rod 24 to move away from the forceps beak 1. At this time, the connecting rod 24 drives the forceps beak 1 to rotate through the pull rod 23, causing the two forceps beaks 1 to approach each other. Subsequently, the device is inserted into the forceps channel of the endoscope, and through the forceps channel, the forceps beak 1 is extended into the patient's digestive tract.

[0028] During this process, the first air pressure sensor continuously collects the first air pressure information inside the outer tube 192. Due to the action of the spring 193, the end of the test block 191 away from the spring 193 slightly protrudes from the end of the clamp beak 1. Since the human digestive tract often has twists and turns, the endoscope clamp channel also twists and turns. As the device moves, the clamp beak 1 inevitably collides with the side wall of the clamp channel. The side wall of the clamp channel pushes the test block 191 to move in the direction of the outer tube 192, squeezing the space inside the outer tube 192, causing the air pressure inside the outer tube 192 to rise. Therefore, when the device is turned on, the initial first air pressure information at this time is obtained through the first air pressure sensor. When the difference between the first air pressure information collected in real time and the initial first air pressure information is greater than the preset value, the clamp beak 1 may collide with the side wall of the clamp channel. The controller controls the communication module to alarm the user, prompting the user to adjust the device in time to avoid the device repeatedly colliding with the side wall of the clamp channel, causing damage to the hinge point inside the device, and affecting the subsequent sampling.

[0029] Compared with the prior art, this solution can monitor the relative position of the side wall of the forceps channel and the forceps beak 1 to a certain extent during the process of inserting the forceps channel, so that when the forceps beak 1 contacts the side wall of the forceps channel, it only alarms the user, prompting the user to adjust the device to avoid blindly applying force and causing damage to the forceps beak 1.

[0030] After the forceps beak 1 enters the patient's digestive tract, the controller continuously obtains image information collected by the endoscope. Since there are often certain differences between the digestive tract tumor and the surrounding normal tissue (such as color difference or morphology difference, etc.), the size and shape of the tumor can be easily obtained through image information. The controller determines the required sampling state according to the tumor morphology. For example, when facing a tumor with irregular and unclear shape, the sampling needle 18 should be used for sampling, and when facing a tumor with a protruding surface and easy to clamp, the forceps beak 1 should be used for sampling.

[0031] When the tumor needs to be sampled using the forceps beak 1, the controller determines the required sampling width according to the size of the tumor, that is, the predicted sampling width, and compares the distance between the two sides of the extension plates 11 that are away from each other obtained through the image information (that is, the actual sampling distance). When the actual sampling distance is less than the predicted sampling width, the pump assembly and all the first solenoid valves are controlled to open, and gas is pumped into the two hoses 12 synchronously, so that the air pressure inside the hoses 12 increases. Due to the action of the one-way valve 14, it is difficult for the gas to enter the elastic tube 15. Under the action of the air pressure, the permanent magnets 13 on the same forceps beak 1 are pushed to move in directions away from each other, driving the extension plates 11 to move in directions away from each other. When the actual sampling distance in the image information is the same as the predicted sampling width, the pump assembly is stopped, the first solenoid valve is closed, and then the communication module is controlled to alarm the user, prompting the user that the tumor can be sampled at this time.

[0032] When the actual sampling distance is greater than the predicted sampling width, the controller controls the pump assembly and all the first solenoid valves to work, extracting the gas in the hose 12, so that the air pressure in the hose 12 slowly decreases, but is still in a positive pressure state. As the air pressure inside the hose 12 decreases, the air pressure is difficult to push the permanent magnet 13 to resist its own magnetic force. At this time, the permanent magnets 13 gradually approach each other under the action of their own magnetic force, which facilitates the extension plate 11 to move in a direction close to each other, and the actual sampling distance is reduced. When the actual sampling distance in the image information is the same as the predicted sampling width, the controller stops the operation of the pump assembly and closes the first solenoid valve, and then controls the communication module to alarm the user, prompting the user that the tumor sampling work can be carried out at this time.

[0033] When the tumor needs to be sampled using the sampling needle 18, the controller controls the pump assembly and the first solenoid valve adjacent to the sampling needle 18 to work, extracting the gas in the corresponding hose 12, so that negative pressure occurs in the hose 12. At this time, since the elastic modulus of the baffle 17 and the hose 12 are both greater than the elastic tube 15, under the action of the air pressure, the elastic tube 15 is deformed first, and its diameter gradually decreases, causing compression on the mesh 16, causing the mesh 16 to deform. As the mesh 16 deforms, the diameter of the mesh 16 decreases, and the height of a single mesh 16 increases, pushing the sampling needle 18 to move outward from the forceps beak 1. At the same time, since the air compression in the hose 12 is small, the force of the gas in the hose 12 on the permanent magnet 13 also decreases. The permanent magnet 13 drives the extension plate 11 to be retracted into the beak 1 under the action of its own magnetic force, so as to prevent the extension plate 11 from affecting the subsequent use of the sampling needle 18. When the sampling needle 18 protrudes from the beak 1, the controller controls the communication module to alarm the user, prompting the user to puncture and sample the tumor. At the same time, the controller increases the working power of the pump assembly, so that the negative pressure in the hose 12 and the elastic tube 15 gradually increases. Under the action of air pressure, the baffle 17 is deformed, so that the sampling needle 18 is connected to the elastic tube 15, thereby extracting the tissue inside the tumor. In this process, due to the change in negative pressure, the deformation of the elastic tube 15 is aggravated, thereby preventing the mesh 16 from resetting under the action of its own elastic force, affecting the sampling process.

[0034] Embodiment 2:

[0035] The difference from Example 1 is that the controller is also used to determine the abnormal area based on the change in pressure, and control the communication module to output the abnormal information to the user based on the image information; the controller is used to predict the location of tissue with abnormal risk based on the abnormal information, generate a guiding task based on the prediction result, and control the communication module to output the guiding task to the user.

[0036] The specific implementation process is as follows: after the user inserts the beak 1 of the device into the patient's digestive tract, the user can lightly touch the beak 1 with the test block 191 with the patient's tissue. Since the hardness of tumor tissue is often different from that of surrounding normal tissue, or the hardness is greater or less, when the user lightly touches the patient's tissue with the beak 1, when the tissue contacted by the test block 191 is of greater hardness, it is difficult for the tissue with greater hardness to undergo obvious deformation. After the test block 191 contacts the tissue (that is, when the first air pressure information changes), the test block 191 is moved to the patient's tissue. 1 is difficult to push the tissue to deform, and the outermost end of the test block 191 quickly reaches a position flush with the end of the forceps beak 1 (the distance and speed of the test block 191 movement can be roughly calculated using the first air pressure information, the operating frequency of the pump assembly and the size of the outer tube 192). When the hardness of the tissue contacted by the test block 191 is relatively small, since it can undergo a certain deformation, the test block 191 can push the tissue to undergo a certain deformation after contacting the tissue. The outermost end of the test block 191 reaches a position flush with the end of the forceps beak 1, and the movement distance is longer than that of the tissue with greater hardness.

[0037] Therefore, the user touches multiple points at the suspected tumor location, and the controller comprehensively analyzes the first air pressure information of these points, determines which point is located at the tumor tissue, and outputs the location of these points (i.e., abnormal information) to the user.

[0038] Using this solution, users can quickly and accurately judge the tumor status. It can also help users make a preliminary judgment on the tumor range, enrich tumor information, and help users evaluate the patient's tumor status more specifically.

[0039] At the same time, the controller can also predict the approximate coverage position of the tumor (i.e., the tissue location where there is an abnormal risk) through abnormal information, and generate a guiding task based on the approximate coverage position of the tumor. For example, when predicting the approximate coverage position of the tumor, its boundary is located in the upper left of the position where the user last touched with the forceps beak 1. At this time, the output guiding task is to prompt the user to move to the upper left and touch the corresponding position to determine whether the predicted position is the boundary of the tumor.

[0040] By using this solution, the user can follow the guidance of the device and purposefully explore the tissues around the abnormal tissues, thus avoiding the time loss caused by blind exploration, reducing the patient's pain, and also avoiding the damage to the patient's normal tissues that may be caused by blind exploration.

[0041] Embodiment 3:

[0042] The difference from Example 2 is that it also includes a limit assembly 4, which includes a test plate 42, air bags 41 are provided on both sides of the test plate 42, and the test plate 42 and the air bags 41 are both arranged in the cylinder 3, the test plate 42 is welded and fixed to the pull rod 23, and the air bags 41 are bonded and fixed to the inner wall of the cylinder 3, and the driving assembly 2 can also drive the test plate 42 to move while driving the two forceps beaks 1 to rotate; The airbags 41 are all connected to the pump assembly, and a second solenoid valve is provided at the connection point; The control system also includes a number of second air pressure sensors, which are used to collect second air pressure information in the airbag 41. The second air pressure sensors and the second solenoid valve are both connected to the controller model. The controller determines the direction and distance of movement of the test plate 42 according to the change of the second air pressure information, and determines the rotation angle of the forceps beak 1 according to the direction and distance of movement of the test plate 42. The controller is also used to control the communication module to alarm the user according to the rotation angle of the forceps beak 1. The controller is also used to control the operation of the pump assembly and the second solenoid valve according to the second air pressure information and image information.

[0043] The specific implementation process is as follows: when using the device, in the initial state, there is gas in the airbag 41, so that the side of the airbag 41 close to the test plate 42 is in contact with the test plate 42. During use, the second air pressure sensor continuously collects the second air pressure information in the two airbags 41. The user rotates the adjustment handle 21, so that when the beaks 1 of the pliers are close to each other, the test plate 42 squeezes the airbag 41 on the right, so that the second air pressure information in the airbag 41 on the right rises. When the user rotates the adjustment plate in the opposite direction so that the beaks 1 rotate in directions away from each other, the test plate 42 squeezes the airbag 41 on the left, so that the second air pressure information in the airbag 41 on the left rises.

[0044] During the sample collection process, the user often moves the beaks 1 away from each other and then moves them closer together to clamp the tumor tissue, and then keeps the beaks 1 close to each other to extract the patient's digestive tract.

[0045] Therefore, after the second air pressure information in the left airbag 41 rises, the second air pressure in the right airbag 41 rises, and the second air pressure in the left airbag 41 does not rise within the set time. At this time, it can be determined that the user has completed sampling. In the subsequent process, if the second air pressure information in the right airbag 41 drops by the set value or the second air pressure in the left airbag 41 rises, the forceps beak 1 may rotate due to operational errors or other reasons, and the sample may fall off the forceps beak 1. The controller controls the alarm to alarm the user, prompting the user to perform relevant processing to avoid the clamped sample falling off in the patient's body, affecting the sampling process and prolonging the patient's pain.

[0046] When the beak 1 of the forceps becomes loose and there is a risk that the sample may fall off, the controller controls the pump assembly and the second solenoid valve corresponding to the left airbag 41 to open, thereby pumping gas into the left airbag 41 to expand the left airbag 41, pushing the test plate 42 to move to the right, thereby driving the beak 1 of the forceps to move towards each other until the second air pressure information corresponding to the right airbag 41 returns to the size when the user takes the sample.

[0047] Compared with the prior art, the present solution can judge the state of the beak 1 from the completion of sampling to the removal of the device from the patient's body, and can promptly remind the user when there is a risk of the sample falling off, and help the user adjust the rotation angle of the beak 1 through the airbag 41 to prevent the sample from falling off the beak 1. The airbag 41 and the test plate 42 can also help the pull rod 23 to a certain extent to maintain a coaxial position with the cylinder 3, avoiding the problem of decreased stability of the device due to the tilt of the pull rod 23.

[0048] At the same time, since the test plate 42 is squeezing the airbag 41, the process of the air pressure rising is not completed in an instant, so the controller will judge the time point when the user completes the sampling. In the process of the user clamping the sample once but failing, the controller may misjudge due to the slow change speed of the second air pressure information in the airbag 41, and start the pump assembly to prevent the user from opening the beak 1 to clamp the sample again. Therefore, during use, the controller corrects the time point of completing the sampling according to the image information, reducing the probability of the controller's misjudgment, providing a better user experience of the device, and facilitating the later promotion of the device.

[0049] At the same time, after turning on the power, the controller can also judge the position of the forceps beak 1 according to the image information. When the forceps beak 1 does not exist in the image information, the controller pump assembly and the second solenoid valve work to pump a certain amount of gas into the air bag 41 on the left, and drive the forceps beak 1 to retract through the test plate 42 and the pull rod 23 until the forceps beak 1 appears in the image information, thereby achieving the purpose of reducing the user's operation steps. At the same time, it can also provide certain protection for the hinges between the forceps beak 1 and the cylinder 3, etc., to further avoid collision between the device and the forceps channel, thereby preventing damage.

[0050] Embodiment 4:

[0051] The difference from Example 3 is that the controller is also used to control the operation of the pump assembly and the second solenoid valve according to the first air pressure information and the image information.

[0052] The specific implementation process is as follows: when using the device, when the beak 1 appears in the image information (that is, part of the beak 1 has entered the patient's digestive tract), and the user makes a preliminary judgment on the hardness of the patient's tissue through the test block 191, the first air pressure information changes. At this time, the controller controls the pump assembly and the corresponding second solenoid valve to work, and pumps gas into the air pump on the left side, thereby driving the beak 1 to rotate in a direction close to each other through the test plate 42 and the pull rod 23, so that the beak 1 is retracted to prevent the raised part of the beak 1 from scratching the patient's mucosa, thereby further reducing the patient's pain, while also reducing the user's operating steps and reducing the difficulty of operation.

[0053] Embodiment 5:

[0054] The difference from Example 4 is that the controller is also used to judge whether the user has completed the guidance task based on the first air pressure information, image information and the guidance task, and only when the user has not completed the guidance task, the communication module is controlled to output prompt information to the user.

[0055] The specific implementation process is as follows: when using this device, after the controller controls the communication module to output the guiding task to the user, the controller determines whether the user moves the forceps beak 1 to the position specified by the guiding task based on the image information, and determines whether the user touches the position specified by the guiding task through the change of the first air pressure information. When the user completes the guiding task, the controller outputs the next guiding task to the user. If the user cannot complete the unidirectional task within the preset time, the controller outputs a prompt message to the user to prompt the user to perform the guiding task. This helps to improve the completion rate of the guiding task, thereby more effectively providing the user with data that can evaluate the patient's tumor status. At the same time, it can also avoid the failure to collect the corresponding position data or the wrong collection position due to the user's omission of the guiding task sent by the communication module, which leads to the controller obtaining the wrong data, affecting the accuracy of the data output to the user.

[0056] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A digestive tract tumor biopsy sampling device, comprising a barrel (3), a driving assembly (2) being provided on the barrel (3), and forceps beaks (1) being symmetrically provided on the driving assembly (2), the driving assembly (2) being used to drive two forceps beaks (1) to rotate, characterized in that: The invention also comprises a pump assembly and a communication module. Both sides of the beak (1) of the forceps are slidably matched with extension plates (11). A hose (12) is provided in the beak (1). The hose (12) is connected to the pump assembly, and a first solenoid valve is provided at the connection point. Permanent magnets (13) are symmetrically provided on the outer side walls of the hoses (12). The permanent magnets (13) are used to drive adjacent extension plates (11) to move synchronously. A collection assembly is provided at one end of any hose (12) away from the pump assembly. The collection assembly comprises an elastic tube (15). One end of the elastic tube (15) is connected to the adjacent hose (12), and the other end of the elastic tube (15) is connected to the adjacent hose (12). A sampling needle (18) is provided, a one-way valve (14) is provided at the connection point between the hose (12) and the elastic tube (15), and a baffle (17) made of elastic material is provided at the connection point between the elastic tube (15) and the sampling needle (18), the elastic modulus of the baffle (17) and the hose (12) are both greater than that of the elastic tube (15), the sampling needle (18) and the forceps beak (1) are slidably matched, a plurality of mesh wires (16) made of elastic material are provided in the elastic tube (15), the mesh wires (16) are all wavy, and the mesh wires (16) are all intertwined with adjacent mesh wires (16), and one end of the other hose (12) away from the pump assembly is closed; It also includes a control system, which is used to receive image information collected by the endoscope, and determine the actual sampling distance of the side of the two adjacent extension plates (11) away from the forceps beak (1) and the size and shape of the tumor based on the image information, and determine the sampling state required by the device based on the tumor shape; When using the forceps beak (1) to take samples, the predicted sampling width is determined based on the tumor size and compared with the actual sampling distance. When the actual sampling distance is smaller than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to operate, and the permanent magnet (13) is driven to move in directions away from each other by pumping fluid into the hose (12). When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When the actual sampling distance is larger than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to operate, and the fluid in the hose (12) is extracted, and the permanent magnets (13) are attracted to each other. When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When the sampling needle (18) is used to take a sample, the pump assembly and the corresponding first solenoid valve are controlled to operate, and the fluid in the extraction hose (12) drives the elastic tube (15) to deform. When the sampling needle (18) is exposed outside the beak of the forceps (1), the control communication module alarms the user and controls the pump assembly to increase the working power.

2. The digestive tract tumor biopsy sampling device according to claim 1, characterized in that: A test assembly (19) is provided on a hose (12) whose end is closed and away from the pump assembly. The test assembly (19) comprises an outer tube (192). The outer tube (192) is fixedly connected to the hose (12). A test block (191) is slidably fitted inside the outer tube (192). A spring (193) is provided inside the outer tube (192). The control system is also used to determine the pressure applied to the end of the beak of the forceps (1) away from the drive assembly (2) based on changes in air pressure inside the outer tube (192), and to control the communication module to alarm the user only when the pressure is greater than a set value.

3. The digestive tract tumor biopsy sampling device according to claim 2, characterized in that: The control system includes a controller and a first air pressure sensor; The first air pressure sensor is used to collect first air pressure information in the outer tube (192); The controller is used to receive image information collected by the endoscope, and to determine the actual sampling distance of the side of the two adjacent extension plates (11) away from the forceps beak (1) and the size and shape of the tumor based on the image information, and to determine the sampling state required by the device based on the tumor shape; when the forceps beak (1) is used to take samples, the predicted sampling width is determined based on the size of the tumor, and the actual sampling distance is compared. When the actual sampling distance is less than the predicted sampling width, the pump assembly and the first solenoid valve are controlled to operate, and the permanent magnet (13) is driven to move in directions away from each other by pumping fluid into the hose (12). When the actual sampling distance is the same as the predicted sampling width, the communication module is controlled to alarm the user. When the actual sampling distance is greater than the predicted sampling width, the control unit is used to control the communication module to alarm the user. When measuring the sampling width, the control pump assembly and the first solenoid valve operate to extract the fluid in the hose (12), the permanent magnets (13) attract each other, and when the actual sampling distance is the same as the predicted sampling width, the control communication module alarms the user; when using the sampling needle (18) to take samples, the control pump assembly and the corresponding first solenoid valve operate to extract the fluid in the hose (12) to drive the elastic tube (15) to deform, and when the sampling needle (18) is exposed outside the beak (1), the control communication module alarms the user. The controller is also used to obtain the pressure at the end of the beak (1) away from the drive assembly (2) according to the first air pressure information, and the control communication module alarms the user only when the pressure is greater than a preset value.

4. The digestive tract tumor biopsy sampling device according to claim 3, characterized in that: The controller is also used to determine the abnormal area according to the change in pressure, and control the communication module to output abnormal information to the user according to the image information.

5. The digestive tract tumor biopsy sampling device according to claim 4, characterized in that: The controller is used to predict the location of tissues with abnormal risks based on abnormal information, generate guiding tasks based on the prediction results, and control the communication module to output the guiding tasks to the user.

6. The digestive tract tumor biopsy sampling device according to claim 5, characterized in that: The apparatus further comprises a limit assembly (4), the limit assembly (4) comprising a test plate (42), air bags (41) being provided on both sides of the test plate (42), the test plate (42) and the air bags (41) being both arranged in the cylinder (3), the test plate (42) being fixedly connected to the drive assembly (2), and the drive assembly (2) being able to drive the test plate (42) to move while driving the two forceps beaks (1) to rotate; The control system further comprises a plurality of second air pressure sensors, each of which is used to collect second air pressure information in the airbag (41). The controller determines the direction and distance of movement of the test plate (42) according to changes in the second air pressure information, and determines the angle of rotation of the beak of the forceps (1) according to the direction and distance of movement of the test plate (42). The controller is also used to control the communication module to alert the user according to the angle of rotation of the beak of the forceps (1).

7. The digestive tract tumor biopsy sampling device according to claim 6, characterized in that: The airbags (41) are all connected to the pump assembly, and a second solenoid valve is provided at the connection point. The controller is also used to control the operation of the pump assembly and the second solenoid valve according to the second air pressure information.

8. The digestive tract tumor biopsy sampling device according to claim 7, characterized in that: The controller is also used to control the operation of the pump assembly and the second solenoid valve according to the image information.

9. The digestive tract tumor biopsy sampling device according to claim 8, characterized in that: The controller is also used to control the operation of the pump assembly and the second solenoid valve according to the first air pressure information and the image information.

10. The digestive tract tumor biopsy sampling device according to claim 9, characterized in that: The controller is also used to judge whether the user has completed the guidance task according to the first air pressure information, the image information and the guidance task, and control the communication module to output prompt information to the user only when the user has not completed the guidance task.

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