A multi-functional endoscope capable of flexibly retracting soft tissue

Abstract

The present application relates to a kind of flexible soft tissue retraction multifunctional endoscope, including endoscope main body and balloon assembly: endoscope main body includes handle, main body pipe, visualization module and channel tunnel kit, the inside of channel tunnel kit is formed channel tunnel that passes through the proximal end to the distal end of handle and main body pipe;Balloon assembly includes balloon and catheter, balloon is made of transparent material, balloon is equipped with with-lumen that is communicated with the inner cavity of catheter;Balloon and catheter can be inserted and removed in channel tunnel, and balloon can be extended to the distal end of main body pipe by channel tunnel.The highly integrated multifunctional endoscope of the present application can be used for the visualization puncture and flexible retraction of brain tissue and the visualization suction, flushing and other surgical operations after puncture, can flexibly retract brain tissue and realize clear visualization during puncture stage, can realize different surgical operations by inserting different instruments in channel tunnel during treatment stage, easy to operate, reduce surgical wound, and simple structure.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and more specifically, to a multifunctional endoscope capable of flexibly retracting soft tissue. Background Technology

[0002] Intracerebral hemorrhage (ICH) is a bleeding event occurring in brain tissue, a serious medical emergency with a mortality rate as high as 36%-60%. The bleeding can form a blood clot, affecting blood circulation in the brain, damaging fragile brain tissue, and restricting blood supply to the brain, leading to permanent disability or even death, posing a significant threat. Therefore, removing or reducing bleeding and / or blood clots in the brain is crucial for saving patients' lives and restoring their health.

[0003] Neuroendoscopic techniques are a minimally invasive surgical method and an important direction in the development of neurosurgery. It involves using an endoscope to enter the surgical area through natural cavities or a small incision. The endoscope provides illumination and visualization, allowing for close observation and clear identification of the hematoma and adjacent tissues for accurate treatment. It also allows for direct observation of the hematoma's extent, ensuring reliable irrigation, aspiration, and hemostasis. Intracranial hematoma evacuation surgery typically includes two stages: the first stage is the puncture stage, primarily for precise location of the hematoma and establishment of a surgical channel; the second stage is the treatment stage, which, based on the surgical channel established in the first stage, involves irrigation, aspiration, coagulation, and debridement under visual guidance.

[0004] The minimum focal length of most endoscopes on the market is 3mm. When the distance between the lens and the target is less than 3mm, the image becomes blurry. Therefore, conventional endoscopes require a distance greater than 3mm between the lens and the target to ensure clear imaging. However, during the puncture phase of intracranial hematoma evacuation surgery, when using an endoscope for direct visualization, clear imaging is required even when the endoscope is in direct contact with the tissue. Ordinary endoscopes often fail to meet this requirement. Although improved designs exist, these products suffer from complex structures, inconvenient operation, and the risk of leakage. If the lens comes into contact with blood or other tissue, it will affect the clarity of the image, rendering the endoscope ineffective for observation.

[0005] In intracranial hematoma evacuation surgery, in addition to providing illumination and enabling visualized puncture, it is also necessary to allow surgeons to perform procedures such as irrigation, aspiration, coagulation, and debridement as needed. Currently, the common practice is to first perform a brain puncture using a visualized brain needle or endoscope to visualize and confirm the hematoma's location, and then use a brain retractor to retract the brain tissue to establish a surgical channel. Then, other devices are used in conjunction with the endoscope for visualized irrigation, aspiration, coagulation, and debridement. This method typically requires a large surgical incision, and the brain retractor, being made of rigid material with a large interventional cross-section, can easily cause brain tissue damage during retraction, leading to prolonged recovery time and significant patient suffering. Furthermore, the procedure is cumbersome, and the cross-contamination of various instruments during the operation can complicate the surgery, prolonging the procedure and increasing the surgical risks.

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

[0007] The purpose of this invention is to overcome the shortcomings of existing endoscopes in tissue puncture, such as poor visualization, limited functionality, complex structure and surgical operation, large surgical incisions, and easy damage to brain tissue. This invention provides a multifunctional endoscope that can flexibly retract soft tissues. It can be used for visualized puncture and flexible retraction of tissues, as well as visualized aspiration and irrigation after puncture. During the puncture stage, brain tissue can be flexibly retracted and clearly visualized. During the treatment stage, different surgical instruments can be inserted into the forceps channel to perform different surgical operations under visualization. The invention is simple to operate, reduces surgical wounds, lowers surgical risks and the difficulty of postoperative recovery for patients, and has a simple structure.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A multifunctional endoscope capable of flexibly retracting soft tissue is provided. The endoscope body includes a handle, a main tube, a visualization module, and a forceps channel assembly. The main tube is fixedly connected to the handle. The visualization module includes an endoscope module disposed at the distal end of the main tube. The forceps channel assembly forms a forceps channel that penetrates the handle and the main tube from the proximal end to the distal end. The balloon assembly includes a balloon and a catheter connected to the balloon. The balloon is made of a transparent material and has an inner cavity communicating with the lumen of the catheter. The balloon and the catheter can be inserted into and removed from the forceps channel, and the balloon can extend beyond the distal end of the main tube through the forceps channel.

[0009] When the multifunctional endoscope of this invention performs visualized puncture, the balloon and catheter of the balloon assembly are inserted into the forceps channel, with the catheter passing through both ends of the forceps channel and the proximal end of the balloon extending beyond the distal end of the main tube. Puncture is performed using the distal end of the catheter, and gas or liquid is injected into the balloon cavity, causing the balloon to gradually expand. As the balloon expands, it can achieve flexible retraction of soft tissue, reducing damage to 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. Even 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, allowing the puncture and retraction actions to be performed under visualization. Furthermore, since the endoscope module is located behind the expanding balloon, the endoscope module will not directly contact the soft tissue during puncture, avoiding the lens from sticking to blood or other tissues, which would cause blurry images and affect clear imaging.

[0010] When the multifunctional endoscope of this invention is used for other visualized surgical operations after puncture, the gas or liquid in the balloon is extracted, causing the balloon to change from an expanded state to a contracted state. The balloon and catheter are then removed from the forceps channel. The surgeon can insert any of the following instruments into the forceps channel as needed: aspiration device, electrocoagulation device, flushing device, debridement device, catheter, etc., to perform the corresponding surgical operation under visualization, which can meet various needs in intracranial hematoma removal surgery.

[0011] The multifunctional endoscope of this invention is highly integrated and can be used for surgical operations such as visualized puncture and flexible retraction of tissues, as well as visualized aspiration and irrigation after puncture. During the puncture stage, brain tissue can be flexibly retracted, and clear imaging with small or even zero object distance can be achieved. During the treatment stage, different surgical operations can be achieved by inserting different surgical instruments into the forceps channel. The operation is simple, reduces surgical trauma, and has a simple structure.

[0012] Furthermore, both ends of the balloon are fixed to the peripheral periphery of the catheter near its 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 on its wall connecting its inner lumen to the inner lumen of the balloon. The distal end of the catheter is either closed or closed by a solid inner guide rod movable within the inner lumen of the catheter. The closed distal end of the catheter, or the closure by a 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 close 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 distal end of the inner guide rod 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 distal end of the inner guide rod to completely fit against the inner wall surface of the distal end of the catheter, preventing brain tissue from entering the catheter lumen during puncture. A certain gap exists between the shaft of the inner guide rod and the inner wall of the catheter, allowing fluid to enter the sac lumen through this gap. After the inner guide rod is withdrawn, a syringe can be connected to the end of the catheter for sampling and testing.

[0014] Furthermore, the catheter includes a first catheter and a second catheter. The first catheter is hollow, and the second catheter is coaxially disposed within the lumen of the first catheter, with the distal end of the second catheter extending beyond 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, and the distal end of the balloon is fixed to the outer periphery of the portion of the second catheter extending beyond the first catheter, with the distal end of the second catheter extending beyond the distal end of the balloon. The lumen of the balloon communicates with the gap between the first catheter and the second catheter.

[0015] Furthermore, the second catheter is coaxially fixed or movably disposed within the lumen 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 disposed within the lumen of the second catheter. When the second catheter is coaxially movably disposed within the lumen of the first catheter, the proximal and distal ends of the balloon are respectively disposed around the periphery of the first and second catheters, thus allowing adjustment of the balloon's expansion and contraction state by adjusting the axial relative position of the second and first catheters as needed. The distal end of the second catheter is closed, either by the solid inner guide rod or by other means, to prevent brain tissue from entering the lumen 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 disposed within the lumen of the second catheter and can be moved until its distal end is flush with the distal end of the second catheter, with at least the outer wall surface of the distal end of the inner guide rod adhering to the inner wall surface of the distal end of the second catheter. During the puncture, an inner guide rod is inserted into the second catheter to block the distal end of the second catheter, preventing brain tissue from entering the lumen of the second catheter. After the inner guide rod is withdrawn, a syringe can be connected to the end of the second catheter to collect samples for testing.

[0016] Furthermore, a support is sealed to the proximal end of the first catheter, and the support has an inflation port communicating with the gap between the first and second catheters. The inflation port allows for indirect or direct communication with external fluid to enable balloon expansion and contraction.

[0017] Furthermore, the support base is provided with a through hole through which the second conduit can pass. When the second conduit is coaxially movably disposed within the inner cavity of the first conduit, the second conduit can pass through the through hole of the support base and move axially within the first conduit.

[0018] Furthermore, the filling port is connected to a fluid pipeline, which is equipped with a first switching valve and has a first Luer connector at its end. The first switching valve controls the flow of fluid in the pipeline, and the first Luer connector enables quick connection to fluid equipment.

[0019] Furthermore, the outer diameter of the main tube is 6.0 mm to 7.0 mm, and the inner diameter of the forceps channel is 2.0 mm to 4.0 mm. Providing a larger forceps channel within a smaller main tube allows for easier access to various medical devices while minimizing surgical trauma.

[0020] Furthermore, the forceps channel kit includes a conical guide and a forceps tube. The conical guide is installed at the proximal end of the handle, with its wider end facing the proximal end of the handle. The forceps tube is a straight tubular tube that passes through both ends of the main tube, with its distal end located at the distal end of the main tube. The proximal end of the forceps tube connects to the conical guide and communicates with the outside through the conical guide. The inner lumen of the forceps tube communicates with the inner lumen of the conical guide to form the forceps channel. The conical guide guides the insertion of instruments such as balloons, aspiration devices, electrocoagulation devices, flushing devices, debridement devices, and catheters into the forceps tube, improving the accuracy of surgical procedures.

[0021] Furthermore, it also includes a water system kit that can be connected to an external power water source. The water system kit includes an insertion end tube extending through both ends of the main tube. The distal end of the insertion end tube is located at the distal end of the main tube, and the proximal end of the insertion end tube is located inside the handle or protrudes from the proximal end of the handle, thereby directly or indirectly connecting to an external power water source. The water system kit can be connected to an external power water source, enabling the multi-functional endoscope to have a flushing function. This allows for flushing when liquid or tissue adheres to the outer surface of the balloon, avoiding interference with clear imaging. Furthermore, it can be used with any of the following instruments inserted into the forceps channel: aspiration device, electrocoagulation device, debridement device, catheter, etc., allowing for 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 joined together and connected to the water pipe connecting pipe via a connector. A second switch valve is installed on the water pipe connecting pipe extending beyond the handle, and a second Luer connector is connected to its end. The two insertion end tubes allow for a wider range of flushing. The second Luer connector facilitates connection to an external power water source. The second switch valve controls the on / off state and flow rate of the water circuit. The water pipe connecting pipe communicates with the insertion end tubes, allowing external power water 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 on the same plane, and the two insertion end tubes are symmetrically arranged on both sides of the plane. This layout design of the internal structure of the main tube achieves efficient utilization of the effective space within the main tube and enables flushing over a wider area.

[0024] Furthermore, the visualization module also includes an endoscope module, a PCB board, cables, and a USB interface. The endoscope module is connected to the PCB board, and the USB interface is connected to the PCB board via the cables. The PCB board is located inside the handle, and the USB interface 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 into a single unit and mounted at the distal end of the main tube. The light source is positioned around the lens to provide light for imaging. The image obtained by the lens is transmitted to the chip via the cables, and then from the chip to the PCB board via the cables. When the USB interface is connected to the display screen, the image obtained by the lens is displayed on the screen. In addition to signal transmission, the cables can also provide the current required for the normal operation of the lens, chip, and light source. Connecting the endoscope module to the PCB board via cables through the main tube eliminates the need for a separate cavity inside the main tube for insertion of the visualization module, allowing more space within the main tube for the forceps channel. This helps to reduce the outer diameter of the main tube, thereby reducing the surgical incision size.

[0025] Furthermore, the main tube includes a hollow steel tube and an installation module located at the distal end of the steel tube. The installation module has a first installation hole for installing the endoscope module and a second installation hole for installing the distal end of the forceps channel kit. The central axes of the first and second installation holes are both offset from the central axis of the installation module. Since the central axes of the first and second installation holes do not coincide with the central axis of the installation module, the installation space of the installation module can be fully utilized to fix the endoscope module and the distal end of the forceps channel to the distal end of the main tube. This also avoids interference between the endoscope module and instruments such as balloons, aspiration devices, electrocoagulation devices, flushing devices, debridement devices, and catheters passing through the forceps channel, allowing surgical operations such as flexible retraction, aspiration, electrocoagulation, flushing, debridement, and drug administration to be performed under good visualization conditions. Furthermore, when the flushing device is set independently of the clamp channel, i.e., the water circuit kit described above, the mounting module also has a third mounting hole for fixing the distal end of the insertion tube, which can further prevent interference between the endoscope module and the water circuit kit and other instruments passing through the clamp channel.

[0026] Compared with the prior art, the beneficial effects of the present invention are: (1) The multifunctional endoscope of the present invention, which can flexibly retract soft tissue, achieves a high degree of integration of endoscope by setting a forceps channel kit and a balloon assembly. It can be used for visual puncture and flexible retraction of brain tissue to establish a surgical channel, as well as visual aspiration, irrigation and other surgical operations after puncture. During the puncture stage, by inserting the balloon and catheter of the balloon assembly into the forceps channel, 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 are performed under visualization, and avoid the endoscope module from sticking to blood or other tissues and affecting clear imaging. During the treatment stage, different surgical operations can be achieved by inserting different instruments into the forceps channel. The operation is simple, the surgical trauma is reduced, and the structure is simple.

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

[0028] (3) The multifunctional endoscope of the present invention, which can flexibly retract soft tissue, integrates and fixes the endoscope module at the distal end of the main tube and connects it to the PCB board through the main tube via a cable. There is no need to set up a separate cavity for the insertion of the visualization module in the main tube, so that there is more space in the main tube reserved for the forceps channel to meet the insertion size requirements of various instruments such as balloons, aspiration devices, and electrocoagulation devices. This helps to reduce the outer diameter of the main tube, thereby reducing the surgical incision. Attached Figure Description

[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 This is a schematic diagram of the balloon assembly. Figure 4 A partial structural diagram of a balloon assembly for inserting a catheter; Figure 5 for Figure 2 A magnified view of part A in the middle; Figure 6 This is a schematic diagram of the structure of a multifunctional endoscope when the balloon is inflated. Figure 7 for Figure 6 A magnified view of part B in the middle; Figure 8This is a schematic diagram of the structure of a multifunctional endoscope when the balloon is in a contracted state. Figure 9 for Figure 8 A magnified view of part C in the middle; Figure 10 This is a structural schematic diagram of the water system assembly; Figure 11 This is a schematic diagram of the pincer channel kit. Figure 12 This is a schematic diagram of the structure of the visualization module; Figure 13 This is a structural diagram of the far end of the main tube; In the attached diagram: 100, endoscope body; 110, handle; 111, mounting platform; 112, opening; 120, main 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 cavity; 220, catheter; 221, first catheter; 222, second catheter; 223, opening; 230, fixing collar; 240, first connecting sleeve; 250, support base; 251, filling interface; 252, first switching valve; 253 1. 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. Vesting channel kit; 410. Vesting channel; 420. Conical guide; 421. Tubular part; 422. Conical part; 423. Mounting truncated cone part; 430. Vesting tube; 500. Water circuit kit; 510. Insertion end tube; 520. Water pipe connection tube; 530. Second switching valve; 540. Second Luer connector; 550. Connector. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of 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 in the drawings.

[0032] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] In addition, in this invention, "distal" and "proximal" refer to the distance of the multi-functional endoscope from the patient during use. The distal end refers to the end of the multi-functional endoscope that is closer to or inserted into the patient's body during use, while the proximal end refers to the end that is farther from the patient during use. Specifically, the proximal ends of the handle, main tube, forceps channel kit (or forceps tube), balloon, catheter, first catheter, second catheter, inner guide rod, and insertion tube all refer to the ends that are farther from the patient during surgery, while the distal ends of the handle, main tube, forceps channel kit (or forceps tube), balloon, catheter, first catheter, second catheter, inner guide rod, and insertion tube all refer to the ends that are closer to or inserted into the patient's body during surgery.

[0034] Example 1 This embodiment is a first embodiment of a multifunctional endoscope capable of flexibly retracting soft tissue, including an endoscope body 100 and a balloon assembly 200: The endoscope body 100 includes a handle 110, a main tube 120, a visualization module 300, and a forceps channel kit 400. The main tube 120 is fixedly connected to the handle 110. The visualization module 300 includes an endoscope module 310 disposed at the distal end of the main tube 120. The forceps channel kit 400 forms a forceps channel 410 that penetrates the handle and the main tube 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 transparent material and has an inner cavity 211 communicating with the inner lumen of the catheter 220. The balloon 210 and the catheter 220 can be inserted into and removed from the forceps channel 410, and the balloon 210 can extend beyond the distal end of the main tube 120 through the forceps channel 410. Figures 1 to 9 As shown.

[0035] In this embodiment, during visualized puncture, the balloon 210 and catheter 220 of the balloon assembly 200 are inserted into the forceps channel 410, such that the catheter 220 passes through both ends of the forceps channel 410 and the proximal end of the balloon 210 extends beyond the distal end of the main tube 120. Puncture is performed using the distal end of the catheter 220, and gas or liquid is injected into the balloon cavity 211 through the lumen of the catheter 220, causing the balloon 210 to gradually inflate. Figure 6-7 As shown, balloon 210 can achieve flexible retraction of soft tissues while expanding, reducing damage to brain tissue. Simultaneously, balloon 210 is made of transparent material, and the expanded balloon 210 can replace the object distance used for imaging. Even 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, allowing the puncture and retraction actions to be performed under visualization. Furthermore, since the endoscope module 310 is located behind the expanding balloon 210, the endoscope module 310 will not directly contact the soft tissue during puncture, avoiding the lens from sticking to blood or other tissues, which would cause blurring and affect clear imaging. In this embodiment, when used for other visualized surgical procedures after puncture, the gas or liquid in the inner cavity 211 of the balloon is extracted through the inner lumen of the catheter 220, causing the balloon 210 to change to a contracted state, such as... Figure 8-9 As shown, at this time, the catheter 220 and balloon 210 can be removed from the forceps channel 410, and the suction device, electrocoagulation device, flushing device, debridement device, catheter, etc. can be inserted into the forceps channel 410 to perform the corresponding surgical operations.

[0036] In this embodiment, since 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 located on the outer periphery of the catheter 220. When the balloon 210 is in the contracted state, the outer diameter of the balloon 210 is not greater 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 single catheter. Both ends of the balloon 210 are fixedly positioned on the outer periphery of the catheter 220 near its distal end, with the distal end of the catheter 220 extending beyond the distal end of the balloon 210. The catheter 220 is hollow, and an opening 223 is provided in its wall to connect the inner lumen of the catheter 220 with the inner lumen 211 of the balloon. The distal end of the catheter 220 is either closed or closed by a solid inner guide rod 270 movable within the inner lumen of the catheter 220. Figure 4As shown. When 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 move 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 of the distal end of the inner guide rod 270 to completely fit against the inner wall of the distal end of the catheter 220, preventing brain tissue from entering the lumen of the catheter 220 during puncture. Furthermore, there is a certain gap between the shaft of the inner guide rod 270 and the inner wall of the catheter 220, allowing fluid to enter the capsule 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 for sampling and testing.

[0038] The catheter 220 may also include two catheters that are nested together. 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 disposed 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. The gap between the inner cavity 211 of the balloon and the first catheter 221 and the second catheter 222 is connected. The second catheter 222 may be coaxially fixed or movably disposed in the inner cavity of the first catheter 221, and the distal end of the second catheter 222 may be closed. Alternatively, the second catheter 222 may be hollow and its distal end may be closed by a solid inner guide rod 270 movably disposed in the inner cavity of the second catheter 222.

[0039] As a preferred embodiment, in this case, the second catheter 222 is coaxially and movably disposed within the lumen of the first catheter 221, such as... Figure 5 As shown. 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 the length of the first conduit 221. The distal end of the second conduit 222 extends beyond the distal end of the first conduit 221. The second conduit 222 is movably disposed within the lumen of the first conduit 221, as shown. 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 operator to adjust the stretching state of the balloon 210 as needed. 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 its lifespan. During surgery, the second catheter 222 is pushed distally to position the balloon 210 in the preset stretching position. This facilitates the insertion of the balloon 210 and catheter 220 through the clamp channel 410 into the patient's body and allows the balloon 210 to expand rapidly after gas or liquid is injected into the balloon cavity 211.

[0040] In this embodiment, a solid inner guide rod 270 is also included. The second conduit 222 is hollow, and the inner guide rod 270 is movably disposed within 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 As shown. 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 seal the lumen of the second catheter 222, ensuring that the distal end face of the inner guide rod 270 is flush with the distal end face of the second catheter 222, thus preventing brain tissue from entering the lumen of the second catheter 222. After the inner guide rod 270 is withdrawn, a syringe can be connected to the end of the second catheter 222 for sampling and testing. To facilitate the operation of the inner guide rod 270, a pull ring can be connected to the proximal end of the inner guide rod 270. Furthermore, to ensure that the distal end face of the inserted inner guide rod 270 is flush with the distal end face 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. This ensures that when the pull ring fully abuts against the proximal operating part of the second catheter 222, the distal end face of the inner guide rod 270 is exactly flush with the distal end face of the second catheter 222. However, the use of a solid inner guide rod 270 is not a limitation of this invention. When sampling is not required during the procedure, the solid inner guide rod 270 may not be used. In this case, the distal end of the first catheter 221 needs to be sealed to prevent brain tissue from entering the lumen of the second catheter 222 during puncture.

[0041] A support base 250 is sealed to the proximal end of the first catheter 221. The support base 250 has an inflation port 251 that communicates with the gap between the first catheter 221 and the second catheter 222. The inflation port 251 allows for indirect or direct communication with an external fluid to facilitate balloon expansion and contraction. In this embodiment, the inflation port 251 is connected to a fluid conduit, which has a first switching valve 252 and a first Luer connector 253 at its end. Figure 1-3 As shown. A syringe is connected via a first Luer connector 253, and gas or liquid is injected or withdrawn into the gap between the first catheter 221 and the second catheter 222 via the filling port 251, thereby causing the balloon 210 to expand or contract; when the balloon 210 expands to the desired state, the second switching valve 530 is closed, and the balloon 210 can be maintained in this expanded state.

[0042] To facilitate the connection of the balloon 210, in this embodiment, a fixing collar 230 is provided on the proximal outer periphery of the balloon 210 to clamp the balloon 210 to the distal outer periphery of the first catheter 221. A first connecting sleeve 240 is provided between the distal end of the balloon 210 and the outer periphery of the second catheter 222. To maintain the coaxiality of the first catheter 221 and the second catheter 222, a second connecting sleeve 260 is provided between the inner wall of the distal end of the first catheter 221 and the outer wall of the second catheter 222. The second connecting sleeve 260 has a sleeve gap that connects the gap between the first catheter 221 and the second catheter 222 and the inner cavity 211 of the balloon. Figure 5 As shown. In this embodiment, the support base 250 is also provided with a through hole through which the second conduit 222 can pass. 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 keeping the radial relative position of the first conduit 221 and the second conduit 222 unchanged, while the second conduit 222 will only change its 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, a fixing collar 230 is used to tightly clamp the proximal end of the balloon 210 to the outer periphery of the distal end of the first catheter 221. To prevent the gap between the first catheter 221 and the second catheter 222 from disappearing under the clamping force of the fixing collar 230, in this embodiment, a second connecting sleeve 260 is disposed inside the fixing collar 230, thereby preventing the gap between the first catheter 221 and the second catheter 222 from decreasing when the first catheter 221 is clamped. Figure 5 As shown. For the distal end of the balloon 210, an internal connection method is adopted to avoid damage to soft tissue during puncture. Specifically, the internal connection is achieved by bonding the distal end of the balloon 210 to the outer periphery of the first connecting sleeve 240. 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 catheter 221 and the second catheter 222, in this embodiment, an operating part is connected to the proximal end of the second catheter 222, and a first locking component for fixing the axial relative position of the first catheter 221 and the second catheter 222 is provided between the support 250 and the operating part. Locking the axial relative position of the first catheter 221 and the second catheter 222 by the first locking component reduces the stretching time of the balloon 210 before surgery, and allows the balloon 210 to be maintained at a predetermined stretching degree during surgery, facilitating its passage through the forceps channel 410 into the patient's body and subsequent rapid expansion of the balloon 210. Furthermore, the first locking component can also release the relative fixation of the first catheter 221 and the second catheter 222, allowing the balloon 210 to be released again. The first locking component can be a threaded structure, a snap-fit ​​structure, a locking pin structure, or other structures capable of fixing the relative position between the first catheter 221 and the second catheter 222. In this embodiment, the first locking component may consist of an L-shaped locking groove provided in the support 250 and a locking pin provided on the outer periphery of the operating part.

[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 component is provided between the balloon assembly 200 and the endoscope body 100. Specifically, the second locking component includes a first locking part located on the support 250 and / or the first catheter 221, and a second locking part located proximal to the handle 110 or proximal to the forceps channel kit 400. The first and second locking parts can be specifically threaded, snap-fit, or positioning structures. With this configuration, when performing surgical operations using the multifunctional endoscope of this embodiment, the balloon assembly 200 can be locked in the 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 surgical operations.

[0046] In addition, in this embodiment, the handle 110 is a pistol-shaped handle or a straight 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 handle, the outer periphery of the handle 110 can be provided with a protruding structure to fit the hand shape and improve user comfort. The handle 110 can also be provided with a water outlet and a cable 330 outlet to facilitate the guidance of the cable 330 and water channel inside the handle 110 to the outside of the handle 110 when needed. When the handle 110 is a pistol-shaped handle, from the distal end to the proximal end, the handle 110 includes a connecting part and a gripping part with their axes set at right angles or obtuse angles. The main body tube 120 is installed in the connecting part, and the gripping part can provide installation space for the power supply, PCB board 320, cable 330, etc. Figure 1-2 As shown.

[0047] Example 2 This embodiment is a second embodiment of a multifunctional endoscope that can flexibly retract soft tissue. This embodiment is similar to the first embodiment, except that the specific settings of the forceps channel kit 400 and the water channel kit 500 are different.

[0048] The forceps channel kit 400 includes a conical guide 420 and a forceps tube 430. The conical guide 420 is mounted on the proximal end of the handle 110, with its wider end facing the proximal end of the handle 110. The conical guide 420 guides the insertion of instruments such as balloons, aspiration devices, electrocoagulation devices, flushing devices, debridement devices, and catheters into the forceps tube 430, improving the convenience of surgical procedures.

[0049] In this embodiment, the conical guide 420 includes a tubular portion 421, a conical portion 422, and a mounting frustum portion 423 arranged sequentially from the distal end to the proximal end. The tubular portion 421 is connected to the proximal end of the clamp tube 430. The conical portion 422 is disposed at the proximal end of the handle 110 and communicates with the outside. A mounting platform 111 is provided inside the handle 110, and a mounting groove is provided on the mounting platform 111. The mounting frustum portion 423 cooperates with the mounting groove to realize the installation of the conical guide 420. Specifically, in this embodiment, an opening 112 can be provided at the proximal end of the handle 110. After the mounting frustum portion 423 is installed with the handle 110, it can be disposed inside the handle 110 or in the opening 112, maintaining the integrity of the outer surface of the handle 110. However, this is not a limitation of the present invention, and the conical guide 420 can also be located outside the handle 110.

[0050] The clamp channel tube 430 is a straight tubular tube that runs through both ends of the main body tube 120. The distal end of the clamp channel tube 430 is located at the distal end of the main body tube 120, and the proximal end of the clamp channel tube 430 is connected to the conical guide 420 and communicates with the outside through the conical guide 420. The inner cavity of the clamp channel tube 430 communicates with the inner cavity of the conical guide 420 to form a clamp channel 410. Figure 11 As shown. The central axes of the endoscope module 310 and the forceps tube 430 are offset from the central axis of the main tube 120. That is, the central axes of the endoscope module 310 and the forceps tube 430 do not coincide with the central axis of the main tube 120. This allows for the simultaneous installation of the endoscope module 310 and the forceps tube 430 within the cavity of the main tube 120, resulting in a compact endoscope. To maintain the installation stability of the tubular structure, the forceps tube 430 employs at least a two-point fixed connection method.

[0051] Additionally, this embodiment also includes a water system kit 500 that can be connected to an external power water source, such as... Figure 10As shown. The water system kit 500 can be connected to an external powered water source, enabling the multi-functional endoscope to have a flushing function. The water system kit 500 can be inserted into the forceps channel 410 or set up independently of the forceps channel 410. When the water system kit 500 is set up independently of the forceps channel 410, during visualization puncture using the multi-functional endoscope, if liquid or other tissue adheres to the outer surface of the balloon 210 of the balloon assembly 200 while gently retracting soft tissue, the water system kit 500 can be used to flush it, avoiding affecting clear imaging; and the water system kit 500 can be used with any of the instruments such as suction devices, electrocoagulation devices, debridement devices, and catheters inserted into the forceps channel 410, enabling other surgical operations to be performed simultaneously with flushing.

[0052] In this embodiment, the water circuit kit 500 is set independently of the clamp channel 410. Specifically, the water circuit kit 500 includes an insertion end tube 510 passing through both ends of the main body tube 120. The distal end of the insertion end tube 510 is located at the distal end of the main body tube 120, and the proximal end of the insertion end tube 510 is located inside the handle 110 or protrudes from the proximal end of the handle 110, thereby allowing for indirect or direct connection to an external power water source. The insertion end tube 510 serves as a medium connecting the inside and outside, guiding the external power water source to the desired flushing area.

[0053] The water system kit 500 also includes a water pipe connecting pipe 520, a second switching valve 530, and a second Luer connector 540. The distal end of the insertion end pipe 510 is located at the distal end of the main body pipe 120, and the proximal end of the insertion end pipe 510 is connected to the water pipe connecting pipe 520. The second switching valve 530 is installed on the pipe extending from the handle 110 of the water pipe connecting pipe 520, and the end of the water pipe connecting pipe 520 is connected to the second Luer connector 540. The second Luer connector 540 facilitates connection to an external power water source. The second switching valve 530 is used to control the on / off state of the water circuit and regulate the flow rate. The water pipe connecting pipe 520 is connected to the insertion end pipe 510, allowing external power water to flow into the insertion end pipe 510 to achieve the flushing function.

[0054] To achieve efficient and wide-area flushing, in this embodiment, there are two insertion end tubes 510, and the proximal ends of the two insertion end tubes 510 are connected to the water pipe connection tube 520 through a connector 550. To achieve a compact structural arrangement within the main tube 120 and a wide-area 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 on the same plane. The two insertion end tubes 510 are symmetrically arranged on both sides of the plane. The overall structural design does not affect the outer diameter of the main tube 120 and ensures that the cross-sectional size of the clamp channel 410 is not too small.

[0055] When the connector 550 is selected as a deformable mounting sleeve and is fitted around the periphery of the proximal end of the main tube 120 located in the inner fixed part of the handle 110, it can not only be used to fix the proximal end of the insertion 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 that can flexibly retract soft tissue. This embodiment is similar to the first or second embodiment, except that the specific structure of the visualization module 300 and the main tube 120 is different.

[0057] In this embodiment, the visualization module 300 also includes a PCB board 320, a cable 330, and a USB interface 340. The endoscope module 310 is connected to the PCB board 320, and the USB interface 340 is connected to the PCB board 320 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 mounted at the distal end of the main body tube 120. Figure 12 As shown.

[0058] Specifically, the light source is set around the lens, preferably two, to provide light for the lens's imaging. The light source can be an LED or other light source. The lens has a minimum depth of field of 2mm, which can clearly observe the scene 2-100mm in front of the insertion end. The image obtained by the lens is converted into photoelectric information by the chip and transmitted by the chip 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 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] In this embodiment, the endoscope module 310 is fixedly mounted at the distal end of the main tube 120. The endoscope module 310 is connected to the PCB board 320 outside the main tube 120 via a cable 330 passing through the main tube 120, without a separate visualization cavity. This allows the outer diameter of the main tube 120 to be smaller than that of conventional endoscopic catheters, specifically 6.0mm to 7.0mm, preferably 6.5mm. The smaller size of the main tube 120 can reduce skull damage, allowing intracranial hematoma surgery to be completed through a small surgical incision. At the same time, the inner diameter of the forceps channel 410 can be increased to 2.0mm to 4.0mm, more preferably to 3.5mm to 4.0mm. The cross-sectional size of the forceps channel 410 with this inner diameter is not too small, which facilitates the insertion of any of the instruments such as balloon assembly, aspiration kit, debridement kit, irrigation kit, electrocoagulation kit, and catheter according to surgical needs, in order to achieve the corresponding surgical operation.

[0060] In this embodiment, the main tube 120 includes a hollow steel tube and an installation module 130 disposed inside the far end of the steel tube. An installation step 131 is disposed on the outer periphery of the installation module 130. The installation module 130 is inserted into the steel tube and moved until the installation step 131 abuts against the far end of the steel tube. 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 tube, the outer peripheral surface of the installation module 130 and the outer peripheral surface of the steel tube form a smooth cylindrical surface.

[0061] The mounting module 130 has 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 tube 430. The central axis of the first mounting hole 132 and the central axis of the second mounting hole 133 are both offset from the central axis of the mounting module 130. When the water circuit kit 500 in Embodiment 2 is installed, the mounting module 130 also has two third mounting holes 134 for fixing the distal ends of the two insertion tubes 510, respectively. The two third mounting holes 134 are symmetrical about the central axis of the mounting module 130, such as... Figure 13 As shown. This configuration fully utilizes the installation space of the mounting module 130 to fix the distal ends of the endoscope module 310, the forceps channel 430, and the insertion end tube 510 to the distal end of the main tube 120. It also avoids interference between the endoscope module 310 and the water circuit kit 500, as well as instruments such as the balloon 210, aspiration device, electrocoagulation device, debridement device, and catheters that pass through the forceps channel 410. This allows operations such as flushing, gentle retraction, aspiration, electrocoagulation, debridement, and drug administration to be performed under good visualization conditions.

[0062] The specific implementation steps of this invention are as follows: When the multifunctional endoscope performs visualized puncture, the balloon 210 and catheter 220 of the balloon assembly 200 are first inserted into the forceps channel 410, so that the catheter 220 passes through both ends of the forceps channel 410 and the proximal end of the balloon 210 extends beyond the distal end of the main tube 120. The distal end of the catheter 220 is used for puncture, and gas or liquid is filled into the inner cavity 211 of the balloon 210 to gradually expand the balloon 210. As the balloon 210 expands, the soft tissue can be flexibly retracted. At the same time, the expanded balloon 210 can replace the object distance used for imaging, so that the puncture and retraction actions are performed under visualization. When the multifunctional endoscope of the present invention includes a water channel kit 500, if blood or other tissue adheres to the outer surface of the balloon 210, the water channel kit 500 can be used for rinsing to avoid affecting clear imaging.

[0063] When the multifunctional endoscope is used for other visualized surgical procedures after puncture, the gas or liquid in the inner cavity 211 of the balloon 210 is aspirated, causing the balloon 210 to gradually contract. The balloon 210 and the catheter 220 are then removed from the forceps channel 410. The surgeon can insert any of the following instruments into the forceps channel 410 as needed: aspiration device, electrocoagulation device, flushing device, debridement device, catheter, etc., to perform the corresponding surgical procedure under visualization.

[0064] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should 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 for visual puncture and flexible retraction of brain tissue to establish a surgical channel and for post-puncture surgical procedures, characterized in that... Includes the endoscope body (100) and balloon assembly (200): The endoscope body (100) includes a handle (110), a main tube (120), a visualization module (300), and a forceps channel kit (400). The main tube (120) is fixedly connected to the handle (110). The visualization module (300) includes an endoscope module (310) disposed at the distal end of the main tube (120). 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 tube (120). The forceps channel kit (400) forms a forceps channel (410) that runs through the handle (110) and the main 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 has an inner cavity (211) communicating with the inner lumen of the catheter (220). The balloon (210) and the catheter (220) can be inserted into and removed from the forceps channel (410), and the balloon (210) can extend from the distal end of the main tube (120) through the forceps channel (410). When the multifunctional endoscope is used for visualization puncture, the balloon (210) and the catheter (220) are inserted into the forceps channel (410), so that the catheter (220) passes through both ends of the forceps channel (410) and the proximal end of the balloon (210) extends beyond the distal end of the main tube (120). The distal end of the catheter (220) is used for puncture, and gas or liquid is injected into the balloon cavity (211) to expand the balloon (210) to flexibly retract the soft tissue. The expanded balloon (210) replaces the object distance used for imaging, so that clear imaging can still be achieved when the object distance is less than the minimum focal length of the endoscope module (310) or even zero object distance. The endoscope module (310) is located behind the expanded balloon (210) so that the endoscope module (310) does not directly contact the soft tissue during puncture.

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 (211) of the balloon. The distal end of the catheter (220) is a closed end or is closed by a solid inner guide rod (270) that is movably disposed 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). The first catheter (221) is hollow. The second catheter (222) is coaxially disposed 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). The inner cavity (211) of the balloon communicates with 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 conduit (222) is coaxially fixed or movably disposed within the inner cavity of the first conduit (221); the distal end of the second conduit (222) is closed, or the second conduit (222) is hollow and its distal end is closed by a solid inner guide rod (270) movably disposed within the inner cavity of the second conduit (222).

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

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

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

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). The conical guide (420) is installed at the proximal end of the handle (110), with the wide end of the conical guide (420) facing the proximal end of the handle (110). The clamp channel tube (430) is a straight tubular tube that passes through both ends of the main body tube (120). The distal end of the clamp channel tube (430) is located at the distal end of the main body tube (120). The proximal end of the clamp channel tube (430) is connected to the conical guide (420) and communicates with the outside through the conical guide (420). The inner cavity of the clamp channel tube (430) communicates 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, It 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 located at the distal end of the main body tube (120), and the proximal end of the insertion end tube (510) is located inside the handle (110) or protrudes from the proximal end of the handle (110), so that it can be connected to an external power water source indirectly or directly.

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

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) also includes a PCB board (320), a cable (330), and a USB interface (340). The endoscope module (310) is connected to the PCB board (320), and the USB interface (340) is connected to the PCB board (320) 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).

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

Images