Multifunctional endoscope capable of flexibly retracting soft tissue

Abstract

The invention relates to a multifunctional endoscope capable of flexibly retracting soft tissue, which comprises an endoscope main body and a balloon assembly, the endoscope main body comprises a handle, a main body tube, a visual module and a forceps channel suite, and a forceps channel penetrating through the handle and the main body tube from the near end to the far end is formed in the forceps channel suite; the balloon assembly comprises a balloon and a catheter, the balloon is made of a transparent material, and the balloon is provided with a balloon inner cavity communicated with the catheter inner cavity; the balloon and the catheter can be inserted into and moved out of the forceps channel, and the balloon can extend out of the far end of the main body tube through the forceps channel. The multifunctional endoscope disclosed by the invention is highly integrated, can be used for visual puncture and flexible retraction of brain tissues as well as visual suction, flushing and other surgical operations after puncture, and can flexibly retract the brain tissues and realize clear visualization in the puncture stage; in the treatment stage, different surgical operations can be achieved by inserting different instruments into the forceps channel, operation is easy and convenient, surgical wounds are reduced, and the structure is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and more particularly to a multifunctional endoscope capable of flexibly retracting soft tissue. Background Art

[0002] Intracerebral hemorrhage (ICH) is bleeding in the brain and is a serious medical emergency with a mortality rate of 36%-60%. Bleeding can aggregate into clots, disrupting blood circulation in the brain, damaging delicate brain tissue, and restricting blood supply, leading to permanent disability or even death. Therefore, removing or reducing bleeding and / or clots in the brain is crucial to saving patients' lives and restoring their health.

[0003] Neuroendoscopy is a minimally invasive surgical method and an important development direction for neurosurgery. It uses endoscopic equipment to enter the surgical area through natural cavities or smaller incisions. The endoscope provides lighting and visualization for close observation, ensuring clear identification of the hematoma and adjacent tissues for accurate treatment. It can also visually observe the scope of the hematoma to ensure reliable flushing, aspiration, and hemostasis. Intracranial hematoma removal surgery usually includes two stages: the first stage is the puncture stage, which is mainly for the precise positioning of the hematoma and the establishment of a surgical corridor; the second stage is the treatment stage, which is based on the surgical corridor established in the first stage and performs flushing, aspiration, coagulation, debridement and other surgical operations under visual conditions.

[0004] The minimum focal length of endoscopes on the market is usually 3mm. When the distance between the lens and the target is less than 3mm, the image will become blurred. Therefore, when using conventional endoscopes, the distance between the lens and the target must be greater than 3mm to ensure clear imaging. However, during the puncture stage of intracranial hematoma removal surgery, when using an endoscope directly for visual puncture, the endoscope is required to be able to image clearly even when the front end is in direct contact with the tissue. General endoscopes are difficult to meet this requirement. Although there are products with improved designs, these products have problems such as complex structure, inconvenient operation, and risk of leakage. Once the lens sticks to blood or other tissues, it will affect clear imaging and lose the observation function of the endoscope.

[0005] In the intracranial hematoma removal surgery, in addition to providing lighting and achieving visual puncture, it is also necessary to allow the doctor to perform flushing, suction, coagulation, debridement and other operations as appropriate. At present, the common practice is to first use a visual brain needle or endoscope to perform brain puncture surgery to achieve visual positioning and confirmation of the hematoma, and use a brain pressure plate to retract the brain tissue to establish a surgical channel, and then use other devices in conjunction with the endoscope to perform visual flushing, suction, coagulation and debridement operations. This method usually requires a larger surgical incision, and the brain pressure plate is made of hard material with a large interventional cross-section. It is easy to cause damage to the brain tissue during the process of retracting the brain tissue, resulting in a long recovery time for the patient and causing great pain to the patient; in addition, the operation process is cumbersome, and it is easy to cause confusion among multiple instruments during the operation, making the operation complicated and time-consuming, increasing the risk of surgery.

[0006] Existing endoscope products have relatively simple functions. A single product cannot meet the entire surgical process of visual puncture, flexible retraction of brain tissue, and visual hematoma removal after puncture. Different instruments need to be prepared for the two surgical stages respectively, which cannot meet the clinical needs of hematoma removal surgery. Summary of the Invention

[0007] The purpose of the present invention is to overcome the shortcomings of endoscopes in the prior art in terms of poor visualization during tissue puncture, single function, complex structure and surgical operation, large surgical incision, and easy damage to brain tissue. A multifunctional endoscope that can flexibly retract soft tissue is provided, which can be used for visualized puncture and flexible retraction of tissue, as well as visualized suction, flushing and other surgical operations after puncture. During the puncture stage, the brain tissue can be flexibly retracted and clear visualization can be achieved. During the treatment stage, different surgical operations can be achieved under visualization by inserting different surgical instruments into the forceps channel. The operation is simple, the surgical wound is reduced, the surgical risk and the difficulty of postoperative recovery of the patient are reduced, and the structure is simple.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: A multifunctional endoscope that can flexibly retract soft tissue is provided, wherein the endoscope body includes a handle, a main tube, a visualization module and a clamp channel kit, the main tube is fixedly connected to the handle, the visualization module includes an endoscope module arranged at the distal end of the main tube, and the interior of the clamp channel kit forms a clamp channel that runs from the proximal end to the distal end of the handle and the main tube; the balloon assembly includes a balloon and a catheter connected to the balloon, the balloon is made of transparent material, and the balloon is provided with a balloon lumen that is connected to the catheter lumen; the balloon and the catheter can be inserted into and removed from the clamp channel, and the balloon can extend out of the distal end of the main tube through the clamp channel.

[0009] When the multifunctional endoscope of the present invention is performing visualized puncture, the balloon and catheter of the balloon assembly are inserted into the clamp channel, so that the catheter passes through both ends of the clamp channel and the proximal end of the balloon extends out of the distal end of the main tube, and the distal end of the catheter is used for puncture, and gas or liquid is injected into the inner cavity of the balloon to gradually expand the balloon. While the balloon is expanding, flexible retraction of the soft tissue can be achieved, reducing damage to the brain tissue; at the same time, the balloon is made of transparent material, and the expanded balloon can replace the object distance used for imaging. When the object distance is less than the minimum focal length of the endoscope or even zero object distance, the clinical image can still be clearly observed, so that the puncture and retraction actions can be performed under visualization; and because the endoscope module is located behind the expansion balloon, the endoscope module will not directly contact the soft tissue during puncture, avoiding the lens sticking to blood or other tissues, resulting in blurred image display and affecting clear imaging.

[0010] When the multifunctional endoscope of the present invention is used for other visualized surgical operations after puncture, the gas or liquid in the balloon is extracted, so that the balloon changes from an expanded state to a contracted state, and the balloon and the catheter are removed from the clamp channel. The operator can insert any one of the suction device, electrocoagulation device, flushing device, debridement device, catheter and other instruments into the clamp channel as needed, and can perform corresponding surgical operations under visualization, which can meet various needs in intracranial hematoma removal surgery.

[0011] The multifunctional endoscope of the present invention is highly integrated and can be used for visual puncture and flexible retraction of tissues, as well as visual suction and flushing after puncture. During the puncture stage, it can flexibly retract brain tissue and achieve clear imaging at a small object distance or even zero object distance. During the treatment stage, different surgical operations can be achieved by inserting different surgical instruments into the forceps channel. It is easy to operate, reduces surgical trauma, and has a simple structure.

[0012] Furthermore, both ends of the balloon are fixed to the outer periphery of the catheter near the distal end, and the distal end of the catheter extends beyond the distal end of the balloon. The catheter is hollow and has an opening in its wall connecting its inner lumen with the inner lumen of the balloon. The distal end of the catheter is closed or sealed by a solid inner guide rod movably disposed within the inner lumen of the catheter. The closed distal end of the catheter or the solid inner guide rod prevents brain tissue from entering the inner lumen of the catheter during puncture.

[0013] Furthermore, when the inner guide rod is used to seal the distal end of the catheter, the distal end of the inner guide rod can be moved to be flush with the distal end of the catheter. The outer diameter of the inner guide rod distal end is larger than the inner diameter of its shaft and slightly smaller than the inner diameter of the catheter. This allows the outer wall surface of the inner guide rod distal end to completely fit with the inner wall surface of the catheter distal end, preventing brain tissue from entering the catheter lumen during puncture. Furthermore, a certain gap is provided between the shaft of the inner guide rod and the inner wall of the catheter, allowing fluid to enter the bladder lumen through the gap. After the inner guide rod is withdrawn, a syringe can be connected to the end of the catheter to collect samples for testing.

[0014] Furthermore, the catheter includes a first catheter and a second catheter, the first catheter is hollow, the second catheter is coaxially arranged in the inner cavity of the first catheter and the distal end of the second catheter extends out of the distal end of the first catheter, the proximal end of the balloon is fixed to the outer periphery of the distal end of the first catheter, the distal end of the balloon is fixed to the outer periphery of the part of the second catheter extending out of the first catheter, and the distal end of the second catheter extends out of the distal end of the balloon, and the inner cavity of the balloon is connected to the gap between the first catheter and the second catheter.

[0015] Furthermore, the second catheter is coaxially fixed or movably arranged in the inner cavity of the first catheter; the distal end of the second catheter is closed, or the second catheter is hollow and its distal end is closed by a solid inner guide rod movably arranged in the inner cavity of the second catheter. When the second catheter is coaxially movably arranged in the inner cavity of the first catheter, the proximal end and distal end of the balloon are respectively arranged on the periphery of the first catheter and the second catheter, so that the axial relative position of the second catheter and the first catheter can be adjusted according to the needs of use to adjust the telescopic state of the balloon. The distal end of the second catheter is closed or sealed by a solid inner guide rod, which can prevent brain tissue from entering the inner cavity of the second catheter during puncture. When a solid inner guide rod is used to close the distal end of the second catheter, the inner guide rod is movably arranged in the inner cavity of the second catheter and can be moved until its distal end is flush with the distal end of the second catheter, and at least the outer wall surface of the distal end of the inner guide rod is in contact with the inner wall surface of the distal end of the second catheter. During puncture, the inner guide rod is inserted into the second catheter to block the distal end of the second catheter to prevent brain tissue from entering the inner cavity of the second catheter. After the inner guide rod is pulled out, a syringe can be connected to the end of the second catheter to take samples for testing.

[0016] Furthermore, the proximal end of the first catheter is sealedly connected to a support seat, and the support seat is provided with a filling interface communicating with the gap between the first catheter and the second catheter. The filling interface can be used to indirectly or directly communicate with an external fluid to achieve expansion and contraction operations of the balloon.

[0017] Furthermore, the support base is provided with a through hole for allowing the second conduit to pass through. When the second conduit is coaxially movably arranged in the inner cavity of the first conduit, the second conduit can pass through the through hole of the support base and move axially in the first conduit.

[0018] Furthermore, the filling port is connected to a fluid line, the fluid line is provided with a first switch valve, and the end of the fluid line is connected to a first Luer connector. The first switch valve controls the flow of fluid in the fluid line, and the first Luer connector enables a quick connection to a fluid device.

[0019] Furthermore, the outer diameter of the main tube is 6.0mm to 7.0mm, and the inner diameter of the clamp channel is 2.0mm to 4.0mm. Providing a larger clamp channel within a smaller main tube can reduce surgical trauma while providing a channel for various medical devices to enter the patient's body.

[0020] Furthermore, the clamp channel kit includes a conical guide and a clamp channel tube. The conical guide is mounted on the proximal end of the handle, and the wide end of the conical guide is positioned toward the proximal end of the handle. The clamp channel tube is a straight tube that passes through both ends of the main body tube. The distal end of the clamp channel tube is positioned at the distal end of the main body tube. The proximal end of the clamp channel tube is connected to the conical guide and communicates with the outside through the conical guide. The inner lumen of the clamp channel tube communicates with the inner lumen of the conical guide to form the clamp channel. The provision of the conical guide guides the insertion of instruments such as balloons, suction devices, electrocoagulation devices, flushing devices, debridement devices, and catheters into the clamp channel tube, thereby improving the accuracy of surgical operations.

[0021] Furthermore, the device also includes a waterway kit that can be connected to an external powered water source. The waterway kit includes an insertion end tube that extends through both ends of the main tube, with the distal end of the insertion end tube disposed at the distal end of the main tube and the proximal end of the insertion end tube disposed within the handle or protruding from the proximal end of the handle, thereby directly or indirectly connecting to the external powered water source. The waterway kit can be connected to an external powered water source, giving the multifunctional endoscope a flushing function. This allows for flushing when liquid or tissue sticks to the outer surface of the balloon, thereby preventing interference with clear imaging. Furthermore, the kit can be used in conjunction with any of a variety of instruments inserted into the forceps channel, such as a suction device, electrocoagulation device, debridement device, and catheter, to enable simultaneous flushing and other surgical procedures.

[0022] Furthermore, there are two insertion end tubes, the distal ends of which are fixed to the distal end of the main body tube. The proximal ends of the two insertion end tubes are connected to a water pipe connecting tube via a connector. The water pipe connecting tube is provided with a second on-off valve on the pipe extending from the handle and is connected to a second Luer connector at its distal end. Providing two insertion end tubes allows for a wide range of flushing. The second Luer connector facilitates connection to an external power water source. The second on-off valve controls the on / off and flow rate of the water channel. The water pipe connecting tube communicates with the insertion end tubes, allowing the external power water source to flow into the insertion end tubes.

[0023] Furthermore, the central axis of the endoscope module, the central axis of the clamp channel, and the central axis of the main tube are located in the same plane, and the two insertion end tubes are symmetrically arranged on either side of the plane. By designing the layout of the structure inside the main tube, efficient utilization of the effective space inside the main tube is achieved, and a wide range of flushing can be achieved.

[0024] Furthermore, the visualization module also includes an endoscope module, a PCB board, a cable, and a USB port. The cable connects the endoscope module to the PCB board, and the USB port to the PCB board. The PCB board is located inside the handle, and the USB port is located outside the handle. The endoscope module includes a lens, a chip, and a light source, which are integrated and fixedly mounted at the distal end of the main tube. The lens, chip, and light source are packaged as a single unit and mounted at the distal end of the main tube. The light source is arranged circumferentially around the lens to provide illumination for the lens's imaging. The image captured by the lens is transmitted to the chip via the cable, and then from the chip to the PCB board via the cable. When the USB port is connected to a display screen, the image captured by the lens is displayed on the display screen. In addition to signal transmission, the cable also provides the current required for the lens, chip, and light source to operate normally. Connecting the endoscope module to the PCB board via the cable through the main tube eliminates the need for a separate cavity within the main tube for inserting the visualization module, leaving more space within the main tube for the clamp channel, helping to reduce the outer diameter of the main tube and thus the size of the surgical incision.

[0025] Furthermore, the main body tube includes a hollow steel tube and a mounting module located in the distal end of the steel tube, the mounting module is provided with a first mounting hole for mounting the endoscope module and a second mounting hole for mounting the distal end of the clamp channel kit, the central axis of the first mounting hole and the central axis of the second mounting hole are both set offset from the central axis of the mounting module. The central axis of the first mounting hole and the central axis of the second mounting hole do not coincide with the central axis of the mounting module, and the mounting space of the mounting module can be fully utilized to fix the endoscope module and the distal end of the clamp channel tube to the distal end of the main body tube, and mutual interference between the endoscope module and instruments such as balloons, suction devices, electrocoagulation devices, flushing devices, debridement devices, and catheters passing through the clamp channel can be avoided, so that surgical operations such as flexible retraction, suction, electrocoagulation, flushing, debridement, and drug administration can be performed under good visualization conditions. In addition, when the flushing device is set independently of the clamp channel, that is, the water channel kit described above, a third mounting hole is also provided on the mounting module for fixing the distal end of the insertion end tube, which can further avoid mutual interference between the endoscope module and the water channel kit and other instruments passing through the clamp channel.

[0026] Compared with the prior art, the present invention has the following beneficial effects: (1) The multifunctional endoscope capable of flexibly retracting soft tissue of the present invention realizes a high degree of integration of the endoscope by providing a forceps channel kit and a balloon assembly, and can be used for visual puncture and flexible retraction of brain tissue to establish a surgical channel, as well as visual suction, flushing and other surgical operations after puncture; in the puncture stage, the balloon and catheter of the balloon assembly are inserted into the forceps channel, and the brain tissue can be flexibly retracted by the expanded balloon, and the expanded balloon can replace the object distance used for imaging, so that the puncture and retraction actions can be performed under visual conditions, and the endoscope module is prevented from sticking to blood or other tissues and affecting clear imaging; in the treatment stage, different surgical operations can be achieved by inserting different instruments into the forceps channel, which is easy to operate, reduces surgical trauma, and has a simple structure.

[0027] (2) The multifunctional endoscope of the present invention, which can flexibly retract soft tissue, can be flushed when the outer surface of the balloon sticks to liquid or other tissues by providing a water channel kit, so as to avoid affecting clear imaging; and it can be used in conjunction with any one of the instruments such as suction devices, electrocoagulation devices, debridement devices, catheters, etc. inserted into the forceps channel, so that other visual surgical operations can be performed while visually flushing, thereby improving surgical efficiency.

[0028] (3) The multifunctional endoscope capable of flexibly retracting soft tissue of the present invention integrates and fixes the endoscope module at the distal end of the main tube and connects it to a PCB board etc. through a cable passing through the main tube. There is no need to separately set a cavity in the main tube for inserting the visualization module, so that more space is reserved in the main tube for the clamp channel to meet the insertion size requirements of various instruments such as balloons, suction devices, and electrocoagulation devices, which helps to reduce the outer diameter of the main tube, thereby reducing the surgical incision. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A stereoscopic image of a multifunctional endoscope capable of flexibly retracting soft tissue; Figure 2 A schematic diagram of the internal structure of a multifunctional endoscope capable of flexibly retracting soft tissue; Figure 3 Schematic diagram of the structure of the balloon assembly; Figure 4 A schematic diagram of a portion of the structure of a balloon assembly provided with a catheter; Figure 5 for Figure 2 Enlarged view of the part A in the middle; Figure 6 It is a schematic diagram of the structure of the multifunctional endoscope when the balloon is in an expanded state; Figure 7 for Figure 6 Enlarged view of the middle part B; Figure 8It is a schematic diagram of the structure of the multifunctional endoscope when the balloon is in a deflated state; Figure 9 for Figure 8 Enlarged view of the part C in the middle; Figure 10 This is a structural diagram of the waterway kit; Figure 11 It is a structural diagram of the clamp channel kit; Figure 12 This is a structural diagram of the visualization module; Figure 13 Schematic diagram of the structure of the distal end of the main tube; In the accompanying drawings: 100, endoscope body; 110, handle; 111, mounting platform; 112, opening; 120, main body tube; 130, mounting module; 131, mounting step; 132, first mounting hole; 133, second mounting hole; 134, third mounting hole; 200, balloon assembly; 210, balloon; 211, balloon lumen; 220, catheter; 221, first catheter; 222, second catheter; 223, opening; 230, fixing ring; 240, first connecting sleeve; 250, support base; 251, filling port; 252, first switch valve; 253 , first Luer connector; 260, second connecting sleeve; 270, inner guide rod; 300, visualization module; 310, endoscope module; 320, PCB board; 330, cable; 340, USB interface; 400, clamp channel kit; 410, clamp channel; 420, conical guide; 421, tubular part; 422, conical body part; 423, mounting frustum part; 430, clamp channel tube; 500, waterway kit; 510, insertion end tube; 520, water pipe connecting tube; 530, second switch valve; 540, second Luer connector; 550, connector. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0031] The present invention is further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "front", "rear", etc. indicate an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This 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 operate in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] In addition, in the present invention, the terms "distal end" and "proximal end" refer to the distance of the multifunctional endoscope from the patient during use. The distal end refers to the end of the multifunctional endoscope that is close to the patient or inserted into the patient's body during use, and the proximal end refers to the end of the multifunctional endoscope that is away from the patient during use. Specifically, the proximal end of the handle, the proximal end of the main tube, the proximal end of the clamp channel kit (or clamp channel tube), the proximal end of the balloon, the proximal end of the catheter, the proximal end of the first catheter, the proximal end of the second catheter, the proximal end of the inner guide rod, and the proximal end of the insertion end tube all refer to the end that is away from the patient during surgery, while the distal end of the handle, the distal end of the main tube, the proximal end of the clamp channel kit (or clamp channel tube), the distal end of the balloon, the distal end of the catheter, the distal end of the first catheter, the distal end of the second catheter, the distal end of the inner guide rod, and the distal end of the insertion end tube all refer to the end that is close to the patient or inserted into the patient's body during surgery.

[0034] Example 1 This embodiment is the first embodiment of a multifunctional endoscope that can flexibly retract soft tissue, comprising an endoscope body 100 and a balloon assembly 200: the endoscope body 100 comprises a handle 110, a main body tube 120, a visualization module 300 and a clamp channel kit 400, the main body tube 120 is fixedly connected to the handle 110, the visualization module 300 comprises an endoscope module 310 arranged at the distal end of the main body tube 120, and the interior of the clamp channel kit 400 forms a clamp channel 410 that runs through the handle and the main body tube from the proximal end to the distal end; the balloon assembly 200 comprises a balloon 210 and a catheter 220 connected to the balloon 210, the balloon 210 is made of a transparent material, and the balloon 210 is provided with a balloon lumen 211 that is connected to the inner lumen of the catheter 220; the balloon 210 and the catheter 220 can be inserted into and removed from the clamp channel 410, and the balloon 210 can extend out of the distal end of the main body tube 120 through the clamp channel 410, as shown Figures 1 to 9 shown.

[0035] In this embodiment, when performing visualized puncture, the balloon 210 and the catheter 220 of the balloon assembly 200 are inserted into the clamp channel 410, so that the catheter 220 passes through both ends of the clamp channel 410 and the proximal end of the balloon 210 extends out of the distal end of the main tube 120, and the distal end of the catheter 220 is used for puncture, and gas or liquid is injected into the balloon lumen 211 through the inner lumen of the catheter 220 to gradually expand the balloon 210. Figure 6-7 As shown, the balloon 210 can achieve flexible retraction of soft tissue while expanding, reducing damage to brain tissue; at the same time, the balloon 210 is made of transparent material, and the expanded balloon 210 can replace the object distance used for imaging. When the object distance is less than the minimum focal length of the endoscope or even zero object distance, the clinical image can still be clearly observed, so that the puncture and retraction actions can be performed under visualization; and because the endoscope module 310 is located behind the expanded balloon 210, the endoscope module 310 does not directly contact the soft tissue during puncture, avoiding the lens sticking to blood or other tissues, resulting in blurred image display and affecting clear imaging. When this embodiment is used for other visualized surgical operations after puncture, the gas or liquid in the balloon lumen 211 is extracted through the lumen of the catheter 220, so that the state of the balloon 210 changes to a contracted state, such as Figure 8-9 As shown, at this time, the catheter 220 and the balloon 210 can be removed from the clamp channel 410, and a suction device, an electrocoagulation device, a flushing device, a debridement device, a catheter, etc. can be inserted into the clamp channel 410 to perform corresponding surgical operations.

[0036] In this embodiment, because the catheter 220 needs to move within the clamp channel 410, the outer diameter of the catheter 220 is slightly smaller than the inner diameter of the clamp channel 410. The balloon 210 is disposed on the outer periphery of the catheter 220. When the balloon 210 is in a deflated state, the outer diameter of the balloon 210 is no larger than the inner diameter of the clamp channel 410, thereby allowing the catheter 220 to move smoothly within the clamp channel 410.

[0037] The catheter 220 can be a catheter, both ends of the balloon 210 are fixedly arranged on the outer periphery of the catheter 220 near the distal end, and the distal end of the catheter 220 extends out of the distal end of the balloon 210. The catheter 220 is hollow and an opening 223 is provided on the tube wall to connect the inner cavity of the catheter 220 with the inner cavity of the balloon 211. The distal end of the catheter 220 is a closed end or is closed by a solid inner guide rod 270 movably provided in the inner cavity of the catheter 220, such as Figure 4When the inner guide rod 270 is used to seal the distal end of the catheter 220, the distal end of the inner guide rod 270 can be moved to be flush with the distal end of the catheter 220. The outer diameter of the distal end of the inner guide rod 270 is larger than the inner diameter of its shaft and slightly smaller than the inner diameter of the catheter 220. This allows the outer wall surface of the distal end of the inner guide rod 270 to completely fit with the inner wall surface of the distal end of the catheter 220, preventing brain tissue from entering the lumen of the catheter 220 during puncture. Furthermore, a certain gap exists between the shaft of the inner guide rod 270 and the inner wall of the catheter 220, allowing fluid to enter the bladder lumen 211 through the gap. After the inner guide rod 270 is withdrawn, a syringe can be connected to the end of the catheter 220 to collect samples for testing.

[0038] The catheter 220 may also include two catheters that are interconnected internally and externally. Specifically, the catheter 220 includes a first catheter 221 and a second catheter 222. The first catheter 221 is hollow, the second catheter 222 is coaxially arranged in the inner cavity of the first catheter 221, and the distal end of the second catheter 222 extends out of the distal end of the first catheter 221. The proximal end of the balloon 210 is fixed to the outer periphery of the distal end of the first catheter 221, the distal end of the balloon 210 is fixed to the outer periphery of the portion of the second catheter 222 that extends out of the first catheter 221, and the distal end of the second catheter 222 extends out of the distal end of the balloon 210, and the balloon lumen 211 is connected to the gap between the first catheter 221 and the second catheter 222; wherein the second catheter 222 can be coaxially fixed or movably arranged in the inner cavity of the first catheter 221, and the distal end of the second catheter 222 is closed, or the second catheter 222 is hollow and its distal end is closed by a solid inner guide rod 270 movably arranged in the inner cavity of the second catheter 222.

[0039] As a preferred solution, in this embodiment, the second conduit 222 is coaxially movably arranged in the inner cavity of the first conduit 221, such as Figure 5 Specifically, the first conduit 221 and the second conduit 222 are coaxially arranged circular tube structures. The length of the second conduit 222 is greater than that of the first conduit 221. The distal end of the second conduit 222 extends out of the distal end of the first conduit 221. The second conduit 222 is movably arranged in the inner cavity of the first conduit 221. Figure 5 As shown. When the second catheter 222 moves axially within the first catheter 221, the distance between the distal and proximal ends of the balloon 210 changes accordingly, allowing the surgeon to adjust the stretched state of the balloon 210 according to usage needs. Specifically, before surgery, the second catheter 222 is pulled proximally to reduce the distance between the distal and proximal ends of the balloon 210, thereby reducing the stretching time of the balloon 210 and extending the service life of the balloon 210; during surgery, the second catheter 222 is pushed distally to place the balloon 210 in a preset stretched position. This facilitates the passage of the balloon 210 and catheter 220 through the forceps channel 410 into the patient's body, and facilitates the rapid expansion of the balloon 210 after gas or liquid is injected into the balloon lumen 211.

[0040] In this embodiment, a solid inner guide rod 270 is further included. The second conduit 222 is hollow. The inner guide rod 270 is movably disposed in the inner cavity of the second conduit 222 and can be moved until its distal end is flush with the distal end of the second conduit 222. At least the outer wall surface of the distal end of the inner guide rod 270 is in contact with the inner wall surface of the distal end of the second conduit 222. Figure 5 During puncture, when the second catheter 222 is hollow and its distal end is not sealed, the inner guide rod 270 is inserted into the second catheter 222 to block the lumen of the second catheter 222 and to align the distal end of the inner guide rod 270 with the distal end of the second catheter 222, thereby preventing brain tissue from entering the lumen of the second catheter 222. After the inner guide rod 270 is withdrawn, a syringe is connected to the end of the second catheter 222 to collect samples for testing. To facilitate operation of the inner guide rod 270, a pull ring may be connected to the proximal end of the inner guide rod 270. To align the distal end of the inserted inner guide rod 270 with the distal end of the second catheter 222, the length of the inner guide rod 270 is greater than or equal to the length of the second catheter 222, preferably equal to the length of the second catheter 222, so that when the pull ring fully abuts the operating portion at the proximal end of the second catheter 222, the distal end of the inner guide rod 270 is flush with the distal end of the second catheter 222. However, the provision of the solid inner guide rod 270 is not a limitation of the present invention. When sampling is not required during surgery, the solid inner guide rod 270 may not be provided. In this case, the distal end of the first catheter 221 needs to be closed to prevent brain tissue from entering the inner cavity of the second catheter 222 during puncture.

[0041] The proximal end of the first catheter 221 is sealed with a support base 250, which is provided with a filling port 251 that communicates with the gap between the first catheter 221 and the second catheter 222. The filling port 251 can be used to communicate with external fluid indirectly or directly to achieve the expansion and contraction of the balloon. In this embodiment, the filling port 251 is connected to a fluid pipeline, which is provided with a first switch valve 252 and the end of the fluid pipeline is connected to a first Luer connector 253, as shown in FIG. Figure 1-3 As shown, a syringe is connected via the first Luer connector 253 to inject or withdraw gas or liquid into or out of the gap between the first conduit 221 and the second conduit 222 via the filling port 251, thereby expanding or contracting the balloon 210. When the balloon 210 is expanded to a desired state, the second switch valve 530 is closed, and the balloon 210 can be maintained in the expanded state.

[0042] In order to facilitate the connection of the balloon 210, in this embodiment, a fixing ring 230 is provided on the proximal periphery of the balloon 210 for tightening the balloon 210 to the distal periphery of the first catheter 221, and a first connecting sleeve 240 is provided between the distal end of the balloon 210 and the periphery of the second catheter 222; in order to maintain the coaxiality of the first catheter 221 and the second catheter 222, a second connecting sleeve 260 is provided between the distal inner wall of the first catheter 221 and the outer wall of the second catheter 222, and the second connecting sleeve 260 is provided with a sleeve gap connecting the gap between the first catheter 221 and the second catheter 222 and the balloon lumen 211, as shown in FIG. Figure 5 In this embodiment, the support base 250 further defines a through hole for accommodating the second conduit 222 to pass through. The central axis of the through hole is collinear with the central axis of the first conduit 221. The proximal end of the second conduit 222 can pass through the through hole, and the distal end of the second conduit 222 is positioned by the first connecting sleeve 240, thereby maintaining the radial relative position of the first conduit 221 and the second conduit 222 unchanged, while the second conduit 222 only changes in axial position relative to the first conduit 221.

[0043] In this embodiment, the first catheter 221 is a rubber tube, and the second catheter 222 is a metal tube. For the proximal end of the balloon 210, the proximal end of the balloon 210 is tightly clamped to the outer periphery of the distal end of the first catheter 221 by the fixing ring 230. In order to prevent the gap between the first catheter 221 and the second catheter 222 from disappearing under the action of the tightening force of the fixing ring 230, in this embodiment, the second connecting sleeve 260 is arranged on the inner side of the fixing ring 230 to prevent the gap between the first catheter 221 and the second catheter 222 from decreasing when the first catheter 221 is tightened. Figure 5 As shown, the distal end of the balloon 210 is connected internally to avoid damage to soft tissue during puncture. Specifically, the distal end of the balloon 210 is bonded to the outer periphery of the first connecting sleeve 240 to achieve internal connection. This connection method makes the distal end of the balloon assembly 200 present a smooth cylindrical structure.

[0044] To lock the relative position between the first and second catheters 221, 222, in this embodiment, an operating unit is connected to the proximal end of the second catheter 222. A first locking assembly is provided between the support base 250 and the operating unit to secure the axial relative position of the first and second catheters 221, 222. This locking assembly reduces the time required to stretch the balloon 210 before surgery, allowing the balloon 210 to remain at a predetermined stretch during surgery, facilitating insertion through the forceps channel 410 into the patient's body and subsequent rapid expansion. Furthermore, the first locking assembly can release the relative position between the first and second catheters 221, 222, allowing the balloon 210 to be released again. The first locking assembly can be a threaded structure, a snap-fit ​​structure, a locking pin, or other structure capable of securing the relative position between the first and second catheters 221, 222. In this embodiment, the first locking assembly comprises an L-shaped locking groove in the support base 250 and a locking pin located on the periphery of the operating unit.

[0045] To maintain the distance between the distal end of the balloon 210 and the distal end of the main tube 120, in this embodiment, a second locking assembly is provided between the balloon assembly 200 and the endoscope body 100. Specifically, the second locking assembly includes a first locking portion provided on the support base 250 and / or the first conduit 221, and a second locking portion provided on the proximal end of the handle 110 or the proximal end of the forceps channel assembly 400. The first locking portion and the second locking portion can be specifically configured as threaded structures, snap-fit ​​structures, positioning structures, or the like. With this arrangement, when performing a surgical procedure using the multifunctional endoscope of this embodiment, the balloon assembly 200 can be locked in a desired position relative to the endoscope body 100 as needed, facilitating operation and effectively preventing accidental movement of the balloon assembly 200 relative to the endoscope body 100 during the surgical procedure.

[0046] In addition, in the present embodiment, the handle 110 is a pistol-shaped handle or a straight-line handle. The shape of the handle 110 is set according to the needs of the usage scenario and is not a limitation of the present invention. Whether it is a pistol-shaped handle or a straight-line handle, a raised structure can be set on the periphery of the handle 110 to fit the gripping hand shape and improve the comfort of use; the handle 110 can also be provided with a waterway outlet and a cable 330 outlet, so that the cable 330 and the waterway inside the handle 110 can be guided out of the outside of the handle 110 when necessary. When the handle 110 is a pistol-shaped handle, from the distal end to the proximal end, the handle 110 includes a connecting portion and a gripping portion with an axis at a right angle or an obtuse angle, and the main tube 120 is installed on the connecting portion. The gripping portion can provide installation space for the installation arrangement of the power supply, PCB board 320, cable 330, etc. Figure 1-2 shown.

[0047] Example 2 This embodiment is the second embodiment of a multifunctional endoscope capable of flexibly retracting soft tissue. This embodiment is similar to the first embodiment, except for the specific arrangement of the forceps channel kit 400 and the arrangement of the waterway kit 500 .

[0048] The forceps channel kit 400 includes a tapered guide 420 and a forceps channel tube 430. The tapered guide 420 is mounted proximally to the handle 110, with the wide end of the tapered guide 420 facing proximally. The tapered guide 420 guides the insertion of instruments such as balloons, suction devices, electrocoagulation devices, flushing devices, debridement devices, and catheters into the forceps channel tube 430, thereby facilitating surgical procedures.

[0049] In this embodiment, the tapered guide 420 includes a tubular portion 421, a tapered body portion 422, and a mounting conical portion 423, which are sequentially arranged from distal to proximal. The tubular portion 421 is connected to the proximal end of the clamp channel tube 430, and the tapered body portion 422 is disposed at the proximal end of the handle 110 and communicates with the exterior. The handle 110 is provided with a mounting platform 111, which is provided with a mounting groove. The mounting conical portion 423 cooperates with the mounting groove to achieve installation of the tapered guide 420. In this embodiment, an opening 112 can be provided at the proximal end of the handle 110. After the mounting conical portion 423 is mounted on the handle 110, it can be disposed within the handle 110 or within the opening 112 to maintain the integrity of the handle 110's exterior. However, this is not a limitation of the present invention, and the tapered guide 420 can also be located outside the handle 110.

[0050] The clamp channel tube 430 is a straight tube. The clamp channel tube 430 passes through both ends of the main tube 120. The distal end of the clamp channel tube 430 is set at the distal end of the main tube 120. The proximal end of the clamp channel tube 430 is connected to the tapered guide 420 and communicates with the outside through the tapered guide 420. The inner cavity of the clamp channel tube 430 is connected to the inner cavity of the tapered guide 420 to form a clamp channel 410. Figure 11 As shown, the central axis of the endoscope module 310 and the central axis of the clamp channel tube 430 are both offset from the central axis of the main tube 120. That is, the central axis of the endoscope module 310 and the central axis of the clamp channel tube 430 do not coincide with the central axis of the main tube 120. Therefore, the endoscope module 310 and the clamp channel tube 430 can be installed simultaneously within the inner cavity of the main tube 120, thereby obtaining a compact endoscope. To maintain the installation stability of the tubular structure, the clamp channel tube 430 is fixed at at least two points.

[0051] In addition, this embodiment also includes a water channel kit 500 that can be connected to an external power water source, such as Figure 10As shown. The waterway kit 500 can be connected to an external power water source, so that the multifunctional endoscope has a flushing function. The waterway kit 500 can be inserted from the clamp channel 410 for use, or it can be set independently of the clamp channel 410. When the waterway kit 500 is set independently of the clamp channel 410, when the multifunctional endoscope is used for visualized puncture, the balloon 210 of the balloon assembly 200 can be flushed when the outer surface of the balloon 210 sticks to liquid or other tissues during the process of flexibly retracting the soft tissue, so as to avoid affecting clear imaging; and the waterway kit 500 can be used in conjunction with any one of the suction devices, electrocoagulation devices, debridement devices, catheters and other instruments inserted in the clamp channel 410, so that other surgical operations can be performed while flushing.

[0052] In this embodiment, the waterway kit 500 is provided independently of the clamp channel 410. Specifically, the waterway kit 500 includes an insert end tube 510 that extends through both ends of the main tube 120. The distal end of the insert end tube 510 is positioned at the distal end of the main tube 120, while the proximal end of the insert end tube 510 is positioned within the handle 110 or protrudes from the proximal end of the handle 110, thereby enabling indirect or direct connection to an external power water source. Serving as a medium connecting the inside and outside, the insert end tube 510 directs the external power water source to the desired flushing location.

[0053] The waterway kit 500 further includes a water connection tube 520, a second on-off valve 530, and a second Luer connector 540. The distal end of the insertion end tube 510 is disposed at the distal end of the main tube 120, and the proximal end of the insertion end tube 510 is connected to the water connection tube 520. The second on-off valve 530 is disposed on the portion of the water connection tube 520 extending from the handle 110, and the distal end of the water connection tube 520 is connected to a second Luer connector 540. The second Luer connector 540 facilitates connection to an external power water source. The second on-off valve 530 is used to control the on / off and flow rate of the waterway. The water connection tube 520 is connected to the insertion end tube 510, allowing the external power water source to flow into the insertion end tube 510 to implement a flushing function.

[0054] To achieve efficient, wide-range flushing, in this embodiment, two insertion end tubes 510 are provided, and their proximal ends are joined and connected to the water pipe connecting tube 520 via a connector 550. To achieve a compact structural arrangement within the main tube 120 and a wide-range flushing effect, in this embodiment, the central axis of the endoscope module 310, the central axis of the clamp channel 410, and the central axis of the main tube 120 are located in the same plane, and the two insertion end tubes 510 are symmetrically arranged on either side of the plane. This overall structural design does not affect the outer diameter of the main tube 120, and ensures that the cross-sectional dimensions of the clamp channel 410 are not too small.

[0055] When the connector 550 uses an extrusion-deformable mounting sleeve and is sleeved on the proximal periphery of the fixed part of the main tube 120 located inside the handle 110, it can not only be used to fix the proximal end of the insertion end tube 510, but also cooperate with the mounting structure inside the handle 110 to realize the connection between the main tube 120 and the handle 110; when a winding hole is opened on the connector 550, the cable 330 can be stably fixed between the inner wall of the connector 550 and the outer wall of the clamp tube 430 when passing through the winding hole.

[0056] Example 3 This embodiment is the third embodiment of a multifunctional endoscope capable of flexibly retracting soft tissue. This embodiment is similar to the first or second embodiment, except for the specific structures of the visualization module 300 and the main body tube 120 .

[0057] In this embodiment, the visualization module 300 further includes a PCB board 320, a cable 330 and a USB interface 340. The endoscope module 310 and the PCB board 320, as well as the USB interface 340 and the PCB board 320, are connected via the cable 330. The PCB board 320 is located inside the handle 110, and the USB interface 340 is located outside the handle 110. The endoscope module 310 includes a lens, a chip, and a light source, and is integrated and fixedly arranged at the distal end of the main tube 120, as shown in FIG. Figure 12 shown.

[0058] Specifically, the light source is arranged around the lens, preferably 2, to provide light source for the imaging of the lens. The light source can be an LED lamp or other light source; the lens has a minimum depth of field of 2mm, which can clearly observe the picture 2-100mm in front of the insertion end; the image obtained by the lens is converted into photoelectric information by the chip, and the chip is transmitted to the PCB board 320 via the cable 330. When the USB interface 340 is connected to the display screen, the image obtained by the lens will be displayed on the display screen; in addition to being used for signal transmission, the cable 330 can also be used to provide the current required for normal operation of the lens, chip, and light source.

[0059] When this embodiment is implemented, by fixing the endoscope module 310 at the distal end of the main tube 120, the endoscope module 310 is passed through the main tube 120 by a cable 330 to connect to the PCB board 320 outside the main tube 120, and no separate visualization cavity is set, the outer diameter of the main tube 120 can be set smaller than that of a conventional endoscopic catheter, specifically 6.0mm~7.0mm, preferably 6.5mm. The small-sized main tube 120 can reduce skull damage, and intracranial hematoma surgery can be completed through a small surgical incision; at the same time, the inner diameter of the clamp channel 410 can be increased to 2.0mm~4.0mm, and more preferably the inner diameter of the clamp channel 410 is increased to 3.5mm~4.0mm. The cross-sectional size of the clamp channel 410 with this inner diameter will not be too small, which can facilitate the insertion of any one of the balloon assembly, suction kit, debridement kit, flushing kit, electrocoagulation kit, catheter and other instruments according to surgical needs to achieve the corresponding surgical operation.

[0060] In this embodiment, the main body tube 120 includes a hollow steel pipe and an installation module 130 arranged in the far end of the steel pipe. An installation step 131 is set on the outer periphery of the installation module 130. The installation module 130 is inserted into the steel pipe and moved until the installation step 131 abuts against the far end of the steel pipe. In this embodiment, the outer dimensions of the installation module 130 can be set so that after the installation module 130 is installed to the far end of the steel pipe, the outer peripheral surface of the installation module 130 and the outer peripheral surface of the steel pipe form a smooth cylindrical surface.

[0061] The mounting module 130 is provided with a first mounting hole 132 for mounting the endoscope module 310 and a second mounting hole 133 for mounting the distal end of the clamp channel tube 430. The central axes of the first mounting hole 132 and the second mounting hole 133 are both offset from the central axis of the mounting module 130. When the waterway kit 500 of the second embodiment is provided, the mounting module 130 is further provided with two third mounting holes 134 for fixing the distal ends of the two insertion end tubes 510, respectively. The two third mounting holes 134 are symmetrical about the central axis of the mounting module 130, as shown in FIG. Figure 13 Such an arrangement can fully utilize the installation space of the installation module 130 to fix the endoscope module 310, the distal end of the clamp channel tube 430, and the distal end of the insertion end tube 510 to the distal end of the main body tube 120, and can avoid interference between the endoscope module 310 and the waterway kit 500, as well as instruments such as the balloon 210, suction device, electrocoagulation device, debridement device, and catheter passing through the clamp channel 410, so that operations such as flushing, flexible retraction, suction, electrocoagulation, debridement, and drug administration can be performed under good visualization conditions.

[0062] The specific implementation steps of the embodiment of the present invention are as follows: When the multifunctional endoscope is performing visualized puncture, the balloon 210 and the catheter 220 of the balloon assembly 200 are first inserted into the clamp channel 410, so that the catheter 220 passes through both ends of the clamp channel 410 and the proximal end of the balloon 210 extends out of the distal end of the main tube 120, and the distal end of the catheter 220 is used for puncture, and gas or liquid is filled into the balloon lumen 211 of the balloon 210 to gradually expand the balloon 210. While the balloon 210 is expanding, flexible retraction of the soft tissue can be achieved; at the same time, the expanded balloon 210 can replace the object distance used for imaging, so that the puncture and retraction actions can be performed under visualization; when the multifunctional endoscope of the present invention includes a waterway kit 500, when the outer surface of the balloon 210 sticks to blood or other tissues, the waterway kit 500 can be used to flush it to avoid affecting clear imaging.

[0063] When the multifunctional endoscope is used for other visualized surgical operations after puncture, the gas or liquid in the inner cavity 211 of the balloon 210 is extracted, causing the balloon 210 to gradually shrink, and the balloon 210 and the catheter 220 are removed from the clamp channel 410. The operator can insert any one of the instruments such as suction device, electrocoagulation device, flushing device, debridement device, catheter, etc. into the clamp channel 410 as needed, and the corresponding surgical operation can be performed under visualization.

[0064] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A multifunctional endoscope capable of flexibly retracting soft tissue, characterized in that: The invention comprises an endoscope body (100) and a balloon assembly (200): The endoscope body (100) comprises a handle (110), a main body tube (120), a visualization module (300) and a clamp channel kit (400); the main body tube (120) is fixedly connected to the handle (110); the visualization module (300) comprises an endoscope module (310) arranged at the distal end of the main body tube (120); and the clamp channel kit (400) forms a clamp channel (410) running through the handle (110) and the main body tube (120) from the proximal end to the distal end. The balloon assembly (200) includes a balloon (210) and a catheter (220) connected to the balloon (210); the balloon (210) is made of a transparent material, and the balloon (210) is provided with a balloon lumen (211) that is connected to the lumen of the catheter (220); the balloon (210) and the catheter (220) can be inserted into and removed from the clamp channel (410), and the balloon (210) can extend out of the distal end of the main tube (120) through the clamp channel (410).

2. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 1, characterized in that: Both ends of the balloon (210) are fixed to the outer periphery of the catheter (220) near the distal end, and the distal end of the catheter (220) extends out of the distal end of the balloon (210). The catheter (220) is hollow and has an opening (223) on its wall that connects its inner cavity with the inner cavity of the balloon (211). The distal end of the catheter (220) is a closed end or is closed by a solid inner guide rod (270) movably arranged in the inner cavity of the catheter (220).

3. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 1, characterized in that: The catheter (220) includes a first catheter (221) and a second catheter (222), wherein the first catheter (221) is hollow, the second catheter (222) is coaxially arranged in the inner cavity of the first catheter (221), and the distal end of the second catheter (222) extends beyond the distal end of the first catheter (221), the proximal end of the balloon (210) is fixed to the outer periphery of the distal end of the first catheter (221), the distal end of the balloon (210) is fixed to the outer periphery of the portion of the second catheter (222) extending beyond the first catheter (221), and the distal end of the second catheter (222) extends beyond the distal end of the balloon (210), and the inner cavity (211) of the balloon is connected to the gap between the first catheter (221) and the second catheter (222).

4. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 3, characterized in that: The second catheter (222) is coaxially fixed or movably arranged in the inner cavity of the first catheter (221); the distal end of the second catheter (222) is closed, or the second catheter (222) is hollow and its distal end is closed by a solid inner guide rod (270) movably arranged in the inner cavity of the second catheter (222).

5. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 3, characterized in that: The proximal end of the first catheter (221) is sealedly connected to a support seat (250), and the support seat (250) is provided with a filling interface (251) communicating with the gap between the first catheter (221) and the second catheter (222).

6. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 5, characterized in that: The filling interface (251) is connected to a fluid pipeline, a first switch valve (252) is provided on the fluid pipeline, and the end of the fluid pipeline is connected to a first Luer connector (253).

7. The endoscope according to claim 1, wherein The outer diameter of the main body tube (120) is 6.0 mm to 7.0 mm, and the inner diameter of the clamp channel (410) is 2.0 mm to 4.0 mm.

8. The multifunctional endoscope capable of flexibly retracting soft tissue according to any one of claims 1 to 7, characterized in that: The clamp channel kit (400) includes a conical guide (420) and a clamp channel tube (430), wherein the conical guide (420) is installed at the proximal end of the handle (110) and the wide end of the conical guide (420) is arranged in the proximal direction of the handle (110); the clamp channel tube (430) is a straight tube, and the clamp channel tube (430) passes through both ends of the main tube (120), and the distal end of the clamp channel tube (430) is arranged at the distal end of the main tube (120), the proximal end of the clamp channel tube (430) is connected to the conical guide (420) and communicated with the outside through the conical guide (420), and the inner cavity of the clamp channel tube (430) is communicated with the inner cavity of the conical guide (420) to form the clamp channel (410).

9. The multifunctional endoscope capable of flexibly retracting soft tissue according to any one of claims 1 to 7, characterized in that: The invention also includes a water circuit kit (500) that can be connected to an external power water source. The water circuit kit (500) includes an insertion end tube (510) that passes through both ends of the main body tube (120). The distal end of the insertion end tube (510) is arranged at the distal end of the main body tube (120), and the proximal end of the insertion end tube (510) is arranged inside the handle (110) or protrudes from the proximal end of the handle (110), thereby being able to indirectly or directly connect to an external power water source.

10. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 9, characterized in that: There are two insertion end tubes (510), the distal ends of the two insertion end tubes (510) are fixed to the distal end of the main body tube (120), and the proximal ends of the two insertion end tubes (510) are connected to the water pipe connecting tube (520) through a connector (550). The water pipe connecting tube (520) is provided with a second switch valve (530) on the pipeline extending outside the handle (110), and a second Luer connector (540) is connected to the end thereof.

11. The multifunctional endoscope capable of flexibly retracting soft tissue according to claim 10, characterized in that: The central axis of the endoscope module (310), the central axis of the clamp channel (410), and the central axis of the main tube (120) are located in the same plane, and the two insertion end tubes (510) are symmetrically arranged on both sides of the plane.

12. The multifunctional endoscope capable of flexibly retracting soft tissue according to any one of claims 1 to 7, characterized in that: The visualization module (300) further includes a PCB board (320), a cable (330) and a USB interface (340); the endoscope module (310) and the PCB board (320), as well as the USB interface (340) and the PCB board (320), are connected via the cable (330); the PCB board (320) is disposed inside the handle (110), and the USB interface (340) is disposed outside the handle (110); the endoscope module (310) includes a lens, a chip, and a light source, and is integrated and fixedly disposed at the distal end of the main body tube (120).

13. The multifunctional endoscope capable of flexibly retracting soft tissue according to any one of claims 1 to 7, characterized in that: The main body tube (120) includes a hollow steel tube and a mounting module (130) located at the distal end of the steel tube. The mounting module (130) is provided with a first mounting hole (132) for mounting the endoscope module (310) and a second mounting hole (133) for mounting the distal end of the clamp channel kit (400). The central axis of the first mounting hole (132) and the central axis of the second mounting hole (133) are both deviated from the central axis of the mounting module (130).

Images