Endoscopic electric resection device

Abstract

The endoscopic electric resection device comprises a resection assembly, a sheathing canal, a ring assembly and a handle, the front end of the handle is connected with the sheathing canal, the ring assembly is connected to the handle in a sleeving mode and can slide relative to the handle, the resection assembly is arranged at the front end of the sheathing canal, and the resection assembly is connected with the ring assembly through a traction transmission part. The cutting assembly comprises a first support arm and a second support arm, the first support arm and the second support arm form an opening part at the front end of the cutting assembly, the first support arm and the second support arm can move relatively, and a cutting part is arranged on the inner side of the first support arm and / or the second support arm. Compared with the prior art, the electric resection device has the beneficial effects that the electric resection device can perform electric resection on a part which is difficult to cut by a traditional snare, so that the operation difficulty is reduced; the electric excision device has liquid injection and gas injection functions, the number of times of instrument exchange is reduced, and the operation time can be shortened; and feedback devices such as a sensor and an air bag are arranged, so that the device has higher safety and control accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an endoscopic electrosurgical resection device. Background Art

[0002] For polyps or early tumors in the digestive tract, the most commonly used clinical treatment method is to use an endoscopic high-frequency electric snare to remove them. Traditional electric snares generally include a tubular handle, a flexible sheath connected to the front end of the handle, and a retractable snare wire. When in use, the doctor delivers the sheath to the lesion through the endoscope, pushes or pulls the sliding structure on the handle to make the snare wire extend from the front end of the sheath and open into a loop, and then forms a snare wire across the head end of the polyp, and then slowly tightens the snare wire at the root of the polyp, thereby achieving the effect of trapping the target polyp. Afterwards, a high-frequency current is passed through the wire to remove the polyp.

[0003] While existing electric snares offer a simple structure and ease of use, they still have numerous shortcomings in clinical application. First, for polyps with larger tips or those in difficult locations, successfully removing them across the tip is difficult. Second, traditional snares can only achieve symmetrical incisions, cutting from all sides toward the center. This makes them impractical for asymmetrical incisions that require side-to-side advancement. Furthermore, traditional handles often employ a simple push-and-pull ring mechanism, lacking precise force and distance control. Insufficient tightening force can result in inadequate effect, requiring excessive cutting time and increasing the risk of bleeding or perforation. Conversely, excessive force can forcibly sever tissue before coagulation is complete, resulting in unnecessary bleeding. Since the handles often lack scales or feedback mechanisms, the operator must rely on experience to estimate the degree of snare tightening, which can pose operational risks. Furthermore, while the excised lesion must be removed from the body for pathological examination, traditional electric snares often require the target tissue to remain inside the body after excision. After the snare is withdrawn, using foreign body forceps, baskets and other retrieval instruments to clamp and remove the tissue not only increases the number of operation steps, but may also lead to loss of endoscopic vision or cause additional stimulation to the patient due to multiple instrument exchanges.

[0004] Furthermore, existing electric snares are mostly designed for the digestive tract. Their diameter and length make them difficult to adapt to narrower areas like the respiratory tract, lacking the versatility to be used in multiple applications. Diseased tissue within the respiratory tract is often hidden and confined, making it difficult to manipulate with conventional gastrointestinal snares. In summary, existing electric snares still have shortcomings in terms of precise manipulation, safe resection, postoperative retrieval, and applicability to multiple locations. There is an urgent need to develop a new type of electric resection device to overcome these shortcomings. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and provide an endoscopic electrosurgical resection device, which includes a resection assembly, a sheath, a finger ring assembly and a handle, the front end of the handle being connected to the sheath, the finger ring assembly being sleeved on the handle, the finger ring assembly being able to slide relative to the handle, the resection assembly being arranged at the front end of the sheath, the resection assembly being connected to the finger ring assembly through a traction transmission member, the resection assembly including a first arm and a second arm, the first arm and the second arm forming an opening portion at the front end of the resection assembly, the first arm and the second arm being able to move relative to each other, and a cutting portion being provided on the inner side of the first arm and / or the second arm.

[0006] Preferably, when only one of the first arm or the second arm is provided with the live cutting portion, the other arm is an insulating end.

[0007] Preferably, one or more hook teeth are provided on the inner side of the first arm or the second arm, and a polytetrafluoroethylene coating is provided on the outer side of the first arm or the second arm.

[0008] Preferably, the main body of the first arm or the second arm is a first hollow tube, the first hollow tube is provided with a tube mouth, the finger ring assembly is provided with an external interface, the first hollow tube is connected to the external interface through a liquid pipeline, the external interface is connected to an external device through an external controller, the liquid pipeline is built into the inside of the sheath and the handle, the external interface includes a liquid circuit interface and a circuit interface, the external controller includes a liquid circuit controller and a circuit controller, one end of the circuit interface is connected to the circuit controller, and the other end thereof is connected to the first arm and / or the second arm.

[0009] Preferably, the endoscopic electroresection device also includes a second hollow tube, which is arranged inside the first arm or the second arm, and an opening is provided on the second hollow tube. The second hollow tube is connected to the external interface through a gas pipeline, and the external interface is connected to the external device through an external controller. The gas pipeline is built into the sheath and the handle, and the external interface also includes an air circuit interface, and the external controller also includes an air circuit controller. One end of the air circuit interface is connected to the air circuit controller, and the other end thereof is connected to the first arm and / or the second arm through a gas pipeline.

[0010] Preferably, the endoscopic electrosurgical resection device also includes a third hollow tube, which is arranged inside the first arm or the second arm, and an opening is provided on the third hollow tube, and the opening is arranged at the front end and / or rear end of the first arm or the second arm. The third hollow tube is connected to the gas circuit control switch through a gas pipeline, and the gas circuit control switch is connected to the gas source, and the gas source is arranged in the body of the handle.

[0011] Preferably, the first arm or the second arm is made of a shape memory alloy material, the shape memory alloy material includes a nickel-titanium alloy material and an electroactive polymer material, and the electroactive polymer material includes a Nafion ion membrane metal composite material and a dielectric elastomer.

[0012] Preferably, a sensor module is provided on the first arm or the second arm, and the sensor module is connected to an external controller. The sensor module includes a temperature sensor, an impedance sensor, a position sensor and a pressure sensor. The temperature sensor is used to monitor the temperature changes of the tissue around the resection assembly, the impedance sensor is used to monitor the resistance or impedance between the resection assembly and the patient's body tissue, the pressure sensor is used to monitor the applied pressure between the resection assembly and the target tissue, and the position sensor is used to detect the positional relationship between the first arm and the second arm.

[0013] Preferably, an airbag device is provided inside the finger ring of the finger ring assembly, the airbag device is connected to an external interface through a gas pipeline, the external interface is connected to an external gas source through an external controller, the pressure sensor is connected to the external controller, and the external controller adjusts the inflation volume inside the airbag according to the data collected from the pressure sensor.

[0014] Preferably, the cutting portion is a charged cutting portion or a non-charged cutting portion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The electrosurgical resection device can perform electrosurgical cutting on areas that are difficult to cut with traditional snares, reducing the difficulty of surgery; 2. The hollow tube structure gives the electrosurgical resection device the function of liquid and gas injection, which reduces the need for instrument exchange and can shorten the operation time; 3. Due to the provision of feedback devices such as sensor components and airbag devices, the electric resection device has higher safety and control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 Schematic diagram of the structure of the endoscopic electrosurgical resection device in Example 1 of the present invention; Figure 2 This is a schematic diagram of the first structure of the support arm of the cutting assembly in Example 1 of the present invention; Figure 3 This is a schematic diagram of a second structure of the support arm of the cutting assembly in Example 1 of the present invention; Figure 4 This is a schematic diagram of a third structure of the support arm of the cutting assembly in Example 1 of the present invention; Figure 5 This is a fourth structural schematic diagram of the support arm of the cutting assembly in Example 1 of the present invention; Figure 6 This is a fifth structural schematic diagram of the support arm of the cutting assembly in Example 1 of the present invention; Figure 7 1 is a sixth structural schematic diagram of the support arm of the cutting assembly in Example 1 of the present invention; Figure 8 This is a seventh structural schematic diagram of the support arm of the cutting assembly in Example 1 of the present invention.

[0017] Reference numerals: Resection assembly 1, sheath 2, finger ring assembly 3, handle 4, tail finger ring 5, one arm 6, second arm 7 and external interface 8. DETAILED DESCRIPTION

[0018] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0019] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, unless otherwise specifically defined.

[0020] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0022] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0023] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate different embodiments or examples, and features of different embodiments or examples, described in this specification, unless they are mutually inconsistent.

[0024] In order to illustrate the technical solution of the present invention, specific embodiments are provided below. Example 1

[0025] like Figure 1 As shown, the present invention provides an endoscopic electrosurgical resection device comprising a resection component 1, a sheath 2, a finger ring component 3 and a handle 4.

[0026] The end of the handle 4 is provided with a tail finger ring 5, and the front end of the handle 4 is connected to the sheath tube 2. The finger ring assembly 3 is sleeved on the handle 4. The finger ring assembly 3 can slide relative to the handle 4.

[0027] The cutting assembly 1 is positioned at the front end of the sheath 2 and is connected to the finger ring assembly 3 via a traction drive. The relative sliding movement between the finger ring assembly 3 and the handle 4 drives the cutting assembly 1 to open and close via the traction drive. The traction drive also drives the cutting assembly 1 to rotate about the core axis.

[0028] The cutting assembly 1 includes a first arm 6 and a second arm 7, which form an opening at the front end of the cutting assembly 1. The first arm 6 and the second arm 7 are relatively movable. Preferably, the first arm 6 and the second arm 7 form a U-shaped or C-shaped structure.

[0029] A cutting portion is provided on the inner side of the first arm 6 and / or the second arm 7 , where the inner side refers to the side of the first arm 6 facing the second arm 7 and the side of the second arm 7 facing the first arm 6 .

[0030] The cutting portion can be either a live cutting portion or a non-live cutting portion. In this embodiment, the cutting portion is preferably a live cutting portion. When only one side of the first arm 6 or the second arm 7 is provided with a live cutting portion, the live cutting portion can be a single-stage live cutting portion. In this case, the side without the live cutting portion can be provided as an insulating side, which can also play a squeezing or supporting role, that is, one of the first arm 6 or the second arm 7 is an insulating end.

[0031] When the inner sides of the first arm 6 and the second arm 7 are both provided with charged cutting parts, the effect of a bipolar charged cutting part can be achieved.

[0032] In this way, both the first arm 6 and the second arm 7 can have the cutting function, or only one side can have the cutting function.

[0033] Furthermore, one or more hook teeth are provided on the inner side of the first arm 6 or the second arm 7 .

[0034] The main body of the first arm 6 or the second arm 7 is a first hollow tube. The first hollow tube is provided with a tube opening, and liquid medicine, such as physiological saline, can be released to the vicinity of the target tissue through the first hollow tube.

[0035] The ring assembly 3 is provided with an external interface 8. The first hollow tube is connected to the external interface 8 via a liquid pipeline. The external interface 8 is connected to an external device via an external controller. This forms a liquid passage. The liquid pipeline is built into the sheath tube 2 and handle 4.

[0036] In addition to the fluid circuit interface, the external interface 8 also includes a circuit interface. The external controller includes a fluid circuit controller and a circuit controller. One end of the circuit interface is connected to the circuit controller, and the other end is connected to the first arm 6 and / or the second arm 7.

[0037] The traction transmission component is a flexible transmission wire core, and the sheath tube 2 is a flexible tube.

[0038] The beneficial effects of this embodiment are: Because the cutting assembly 1 has an opening at its front end, the electrosurgical resection device of this embodiment can be used to perform electrosurgical resections in areas difficult to cut with traditional snares, reducing surgical difficulty. The hollow tube structure allows for injection of liquids, reducing instrument exchanges and eliminating the need for injection needles. The insulated head on one side also reduces the risk of unexpected electrical breakdown during surgery.

[0039] By improving the snare's loop structure, the present invention allows for direct cutting at the base of the polyp from proximal to distal, without crossing the polyp's tip. The cutting direction is controllable, reducing surgical difficulty and shortening endoscopic surgery time. The cutting direction can be either left to right or right to left, avoiding indiscriminate cutting toward the center and causing miscutting. The invention also allows for single-arm insulation and single-arm energization, enabling controllable cutting depth. Example 2

[0040] This embodiment differs from embodiment 1 in that: The fixed reinforcement portion of the first or second arm 6 or 7 is a coating of variable friction material. Specifically, only one side of the first or second arm 6 or 7 is equipped with the live cutting portion, while the other side is an insulated end. The inner end of this insulated end is coated with the variable friction material. The variable friction material can be a temperature-sensitive material, such as thermosensitive polyurethane. When the temperature rises, the thermosensitive polyurethane softens, its surface conforms more closely to the tissue, and friction is increased. This advantageously allows the target tissue to be securely fixed during the cutting process, as well as near the first or second arm 6 or 7. This temperature increase increases the friction between the cutting assembly 1 and the target tissue. This ensures that the target tissue is securely fixed during the cutting process. Generally, as the target tissue peels away during the cutting process, the difficulty of the second half of the cutting process increases. Adding a coating of variable friction material makes the second half of the cutting process much easier. Furthermore, the presence of the variable friction material coating prevents the target tissue from being lost after cutting. Example 3

[0041] This embodiment differs from embodiment 1 in that: The endoscopic electrosurgical resection device in this embodiment further includes a second hollow tube, which is disposed inside the first arm 6 or the second arm 7 and has an opening.

[0042] The second hollow tube is connected to the external interface 8 via a gas pipeline, and the external interface 8 is connected to an external device via an external controller, thereby forming a gas passage. The gas pipeline is built into the sheath tube 2 and the handle 4.

[0043] In addition to the liquid and circuit interfaces, the external interface 8 also includes a gas interface. The external controller includes a liquid controller, a circuit controller, and a gas controller. One end of the gas interface is connected to the gas controller, and the other end is connected to the first arm 6 and / or the second arm 7 via a gas pipeline.

[0044] The beneficial effect of this embodiment lies in the addition of a gas input channel. The gas output can adjust the position and shape of the target tissue, placing it in a shape and position that is easy to cut. During the initial adjustment of the resection assembly 1, the resection assembly 1 can be easily moved around the target tissue, thereby reducing surgical time. After the target tissue is removed, the gas output can also help control the movement direction of the target tissue, reducing the risk of loss.

[0045] Furthermore, the provision of a gas passage can enhance the injection process. Typically, injected liquid medications are affected by gravity and the internal environment, making them difficult to control. By controlling the liquid through the output of gas, the liquid can be more effectively and evenly applied to the affected area, indirectly saving on medication usage.

[0046] The gas output from the second hollow tube can also be used to clean excess impurities near the affected area, which can expand and protect the endoscope's field of view. Example 4

[0047] This embodiment differs from embodiment 3 in that: The first hollow tube and the second hollow tube can be combined into the same structure, that is, they share a pipeline, that is, the passage composed of the external interface 8, the pipeline and the hollow tube, which can be used as a pipeline for liquid input as well as a pipeline for gas input.

[0048] The external interface 8 is connected to an external controller via a conversion switch, and the gas input and the liquid input can be switched via the conversion switch.

[0049] The shared pipeline for liquid and gas can also save medicine. In the second half of the injection, the gas source can be switched to load power to the liquid, which can save medicine. Example 5

[0050] This embodiment differs from embodiment 3 in that: The endoscopic electrosurgical resection device in this embodiment further includes a third hollow tube, which is disposed inside the first arm 6 or the second arm 7 and has an opening at the front end and / or the rear end of the arm.

[0051] The third hollow tube is connected to the gas circuit control switch through a gas pipeline, and the gas circuit control switch is connected to the gas source, and the gas source is arranged in the body of the handle 4. Example 6

[0052] This embodiment differs from embodiment 3 in that: The first arm 6 or the second arm 7 is made of a shape-memory alloy, preferably a nickel-titanium alloy with a composition of approximately 55% nickel and 45% titanium. First, a resection assembly 1 (with a preset shape) is manufactured or selected based on the patient's medical imaging to conform to the shape of the target tissue. When not heated, the shape-memory alloy is relatively soft and has high permeability, allowing the physician to more easily insert the resection assembly into the endoscope channel and into the lesion site. After adjusting the position of the resection assembly 1, during the electrosurgical resection process, the shape-memory alloy material gradually returns to its preset shape due to continuous heating, allowing the resection assembly 1 to more closely conform to the target tissue. The increased material stiffness provides more stable support during the resection process. A separate heating element can also be provided for the resection assembly 1.

[0053] In addition, the deformation of a specific part of the first arm 6 or the second arm 7 can be locally controlled, such as adjusting the bending angle of a certain section to make it fit more closely to the irregularly shaped lesion surface.

[0054] The first arm 6 or the second arm 7 can also be made of other shape memory alloy materials, such as electroactive polymers, specifically Nafion ion membrane metal composites, dielectric elastomers, and VHB polymers. These materials can bend, contract, or recover their shape under low or high voltage stimulation, facilitating active deformation, adaptive tightening, and shape memory functions of the first arm 6 or the second arm 7. Electroactive polymers are soft, low-noise, highly responsive, and biocompatible, making them suitable for minimally invasive endoscopic applications. Example 7

[0055] This embodiment differs from Embodiments 1-6 in that: A sensor module is provided on the first arm 6 or the second arm 7 for collecting real-time status data of the surgical site. In this embodiment, the sensor module integrates a temperature sensor, an impedance sensor, a position sensor, and a pressure sensor. The sensor module is connected to an external controller.

[0056] The temperature sensor is used to monitor temperature changes in the tissue surrounding the resection component 1. When high-frequency electrosurgical cutting is performed, the local temperature will rise. The temperature sensor transmits this information back to the controller to help the system determine whether there is a risk of overheating.

[0057] The impedance sensor is used to monitor the resistance or impedance between the cutting assembly 1 and the patient's tissue. This can be achieved by using the cutting assembly 1 as an electrode and applying a small test current to the tissue to measure the impedance, or by placing independent measuring electrodes near the cutting assembly 1. Changes in tissue impedance can indicate whether the tissue is being dried by electrocoagulation (a rapid increase in impedance may indicate tissue dehydration and carbonization) or whether the cut is complete (a sudden increase in circuit impedance or a sudden decrease in current after the two tissues are separated).

[0058] The pressure sensor is used to monitor the acting pressure between the cutting assembly 1 and the target tissue. The position sensor is used to detect the positional relationship between the first support arm 6 and the second support arm 7.

[0059] The sensor module can realize the function of preventing misoperation. When receiving an electric cutting instruction, the live cutting part is not directly connected, but the status of each sensor is first verified to determine whether the surgical instrument is ready for cutting.

[0060] When the first arm 6 and the second arm 7 have not yet locked onto the target tissue or are not sufficiently tightened, it is usually manifested as the pressure sensor reading is lower than the threshold, or the tissue impedance has not changed significantly, or the snare position sensor is not triggered, etc. In this case, the controller will prevent the high-frequency current from passing through the cutting component 1. Even if the external trigger signal is pressed, the electric cutting circuit will not be turned on, and a warning will be given. Once the sensor feedback indicates that the cutting component 1 has been correctly positioned, for example, the pressure has reached the requirement and is relatively stable, and the impedance is consistent with the expected tissue contact value, the controller will unlock and allow the high-frequency live cutting part current to be output to the cutting component 1 to perform cutting. The beneficial effect of setting up a sensor module is that it avoids miscutting and empty burning caused by operational errors or accidents to the greatest extent, and ensures that the electric cutting action occurs under safe and controlled conditions. Example 8

[0061] This embodiment differs from embodiment 7 in that: An airbag device is provided inside the finger ring of the finger ring assembly 3 . The airbag device is connected to the external interface 8 via a gas pipeline, and the external interface 8 is connected to an external gas source via an external controller.

[0062] A sensor module is provided on the first arm 6 or the second arm 7 for collecting real-time status data of the surgical site. In this embodiment, the sensor module includes a pressure sensor. The pressure sensor is connected to an external controller. The external controller collects data from the pressure sensor and adjusts the air volume within the airbag based on pressure changes. This provides synchronous feedback at the surgeon's finger when gripping and operating the finger ring assembly 3. This can be used for both warning and precise control. This further improves the overall safety of the electrosurgical resection device and enhances surgical precision. Example 9

[0063] This embodiment differs from embodiment 1 in that: The outer surface of the first arm 6 or the second arm 7 is coated with polytetrafluoroethylene (PTFE). This coating improves insulation, further preventing electrical breakdown during cutting, and enhancing safety. Furthermore, the PTFE coating reduces friction, allowing the first and second arms 6 and 7 to move more smoothly within the human body.

[0064] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are included within the scope of protection of the present invention.

Claims

1. An endoscopic electrosurgical resection device, characterized in that: It includes a cutting assembly, a sheath, a finger ring assembly and a handle, the front end of the handle is connected to the sheath, the finger ring assembly is sleeved on the handle, the finger ring assembly can slide relative to the handle, the cutting assembly is arranged at the front end of the sheath, the cutting assembly is connected to the finger ring assembly through a traction transmission member, the cutting assembly includes a first arm and a second arm, the first arm and the second arm form an opening at the front end of the cutting assembly, the first arm and the second arm can move relative to each other, and a cutting portion is provided on the inner side of the first arm and / or the second arm.

2. The endoscopic electrosurgical resection device according to claim 1, characterized in that: When only one of the first arm or the second arm is provided with the live cutting portion, the other arm is an insulating end.

3. The endoscopic electrosurgical resection device according to claim 1, characterized in that: One or more hook teeth are provided on the inner side of the first support arm or the second support arm, and a polytetrafluoroethylene coating is provided on the outer side of the first support arm or the second support arm.

4. The endoscopic electrosurgical resection device according to claim 1, characterized in that: The main body of the first arm or the second arm is a first hollow tube, the first hollow tube is provided with a tube mouth, the finger ring assembly is provided with an external interface, the first hollow tube is connected to the external interface through a liquid pipeline, the external interface is connected to an external device through an external controller, the liquid pipeline is built into the inside of the sheath tube and the handle, the external interface includes a liquid circuit interface and a circuit interface, the external controller includes a liquid circuit controller and a circuit controller, one end of the circuit interface is connected to the circuit controller, and the other end thereof is connected to the first arm and / or the second arm.

5. The endoscopic electrosurgical resection device according to claim 4, characterized in that: The endoscopic electroresection device also includes a second hollow tube, which is arranged inside the first arm or the second arm, and an opening is provided on the second hollow tube. The second hollow tube is connected to the external interface through a gas pipeline, and the external interface is connected to the external device through an external controller. The gas pipeline is built into the sheath and the handle. The external interface also includes an air circuit interface, and the external controller also includes an air circuit controller. One end of the air circuit interface is connected to the air circuit controller, and the other end is connected to the first arm and / or the second arm through a gas pipeline.

6. The endoscopic electrosurgical resection device according to claim 4, characterized in that: The endoscopic electrosurgical resection device also includes a third hollow tube, which is arranged inside the first arm or the second arm. The third hollow tube is provided with an opening, and the opening is arranged at the front end and / or rear end of the first arm or the second arm. The third hollow tube is connected to the gas circuit control switch through a gas pipeline, and the gas circuit control switch is connected to the gas source, and the gas source is arranged in the body of the handle.

7. The endoscopic electrosurgical resection device according to claim 1, characterized in that: The first arm or the second arm is made of a shape memory alloy material, the shape memory alloy material includes a nickel-titanium alloy material and an electroactive polymer material, and the electroactive polymer material includes a Nafion ion membrane metal composite material and a dielectric elastomer.

8. The endoscopic electrosurgical resection device according to claim 1, characterized in that: A sensor module is provided on the first arm or the second arm, and the sensor module is connected to an external controller. The sensor module includes a temperature sensor, an impedance sensor, a position sensor and a pressure sensor. The temperature sensor is used to monitor the temperature changes of the tissue around the resection assembly, the impedance sensor is used to monitor the resistance or impedance between the resection assembly and the patient's body tissue, the pressure sensor is used to monitor the applied pressure between the resection assembly and the target tissue, and the position sensor is used to detect the positional relationship between the first arm and the second arm.

9. The endoscopic electrosurgical resection device according to claim 8, characterized in that: An airbag device is provided inside the finger ring of the finger ring assembly, and the airbag device is connected to an external interface through a gas pipeline. The external interface is connected to an external gas source through an external controller. The pressure sensor is connected to the external controller, and the external controller adjusts the inflation volume inside the airbag according to the data collected by the pressure sensor.

10. The endoscopic electrosurgical resection device according to claim 1, characterized in that: The cutting portion is a charged cutting portion or a non-charged cutting portion.

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