Electrotome for gynecological endoscopic surgery

Abstract

The present application relates to the technical field of medical surgical instruments, in particular to a gynecological endoscopic surgery electrotome, which comprises an electrotome body, the electrotome body comprises a handle, one end of the handle is provided with an outer sleeve, the outer sleeve is provided with a connecting head at an end away from the handle, the connecting head is provided with a conductive column mounting cavity, the conductive column mounting cavity is provided with a conductive column in transition fit with the conductive column mounting cavity, one end of the conductive column extends out of the conductive column mounting cavity, and the end of the conductive column extending out of the conductive column mounting cavity is provided with a ring electrode. The present application realizes convenient disassembly and assembly of the ring electrode through the transition fit of the conductive column and the conductive column mounting cavity and the transition fit of the connecting head and the outer sleeve, only needs to separate the connecting head and the outer sleeve when replacing, and the ring electrode can be replaced by pulling out the conductive column, without the need for special tools, and the transition fit can take into account the connection stability and the disassembly convenience, thereby prolonging the overall service life of the electrotome body.

Description

Technical Field

[0001] This invention relates to the field of medical surgical instruments, and more specifically, to an electrosurgical cutter for gynecological endoscopic surgery. Background Technology

[0002] In gynecological endoscopic surgery (such as hysteroscopic endometrial polyp removal), the electrode shape of the electrosurgical resection device directly affects the surgical precision and the degree of tissue damage. Among them, the ring electrode has become a commonly used core working component in clinical practice due to its unique advantages. The advantages of the ring electrode are significant: its ring structure can form a regular cutting trajectory, which is suitable for the precise removal of regular lesions in the uterine cavity (such as the pedicle of a polyp), reducing accidental damage to normal endometrium; the contact area between the electrode and the tissue is moderate, and it can generate a uniform thermal effect under the action of high-frequency current, which can not only ensure cutting efficiency, but also simultaneously achieve wound coagulation, reducing the risk of intraoperative bleeding; at the same time, the ring design allows for flexible rotation and angle adjustment in the narrow space of the uterine cavity, which is especially suitable for treating lesions in hidden locations such as the lateral wall and uterine horn of the uterine cavity, greatly improving the controllability of the surgical operation.

[0003] However, the ring electrode of the electrosurgical resector in gynecological endoscopy currently suffers from significant shortcomings in ease of replacement in practical applications, severely limiting the full realization of its advantages. In traditional structures, the connection between the ring electrode and the conductive post is often achieved through fixed methods (such as welding or integral molding) or non-standardized interference fits. If a fixed connection is used, when the ring electrode needs to be replaced due to surgical wear, deformation, or contamination, the entire core component, including the conductive post, must be replaced, increasing instrument costs and prolonging surgical preparation time. If an interference fit is used, although it can theoretically be disassembled, it requires the use of special tools for forced separation, which can easily lead to wear on the mounting cavity of the conductive post or connector, thus affecting the stability of subsequent assembly. More importantly, the fitting precision between the conductive post and the mounting cavity in existing structures cannot simultaneously achieve "connection stability" and "easy replacement." An overly tight fit makes replacement difficult, while an overly loose fit leads to unstable current transmission, causing problems such as decreased cutting efficiency and excessive burning of local tissues, directly affecting surgical safety.

[0004] In summary, the precision and safety advantages of ring electrodes in gynecological endoscopic surgery make them an indispensable component. However, the difficulty in replacing them in existing technologies increases clinical costs and operational burdens, and improper replacement may affect surgical outcomes. Therefore, there is an urgent need for an electrosurgical device structure that retains the inherent advantages of ring electrodes while achieving convenient replacement and stable conductivity, in order to resolve the aforementioned contradictions in existing technologies. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0006] An electrosurgical cutter for gynecological endoscopy includes an electrosurgical cutter body, which includes a handle. One end of the handle is provided with an outer sleeve, and the end of the outer sleeve away from the handle is provided with a connector. The connector is provided with a conductive post mounting cavity, and a conductive post is provided in the conductive post mounting cavity for transitional fitting. One end of the conductive post extends out of the conductive post mounting cavity, and an annular electrode is provided at the end of the conductive post extending out of the conductive post mounting cavity. A conductive cylinder is provided in the outer sleeve, and a conductive cylinder groove is provided at the end of the conductive cylinder near the conductive post. The other end of the conductive post extends into the conductive cylinder groove.

[0007] As a preferred embodiment of the present invention, the end of the connector near the outer sleeve is provided with a connecting sleeve that transitionally fits with the inner wall of the outer sleeve, and the end of the connecting sleeve extends into the outer sleeve.

[0008] As a preferred embodiment of the present invention, one end of the conductive cylinder is threadedly connected to the knife handle.

[0009] As a preferred embodiment of the present invention, the other end of the handle is provided with a water inlet pipe, the connector, the conductive cylinder and the inside of the handle are all hollow to form a water flow channel for water supply, and the end of the connector is provided with a water outlet for water to flow out of the water supply channel.

[0010] As a preferred embodiment of the present invention, one end of the water inlet pipe is threadedly connected to the knife handle.

[0011] As a preferred embodiment of the present invention, the middle part of the water inlet pipe fitting is provided with an adjustment part, the adjustment part is provided with an installation through hole that penetrates the water flow channel in the water inlet pipe fitting, and an adjustment component is provided at the installation through hole. The adjustment component includes an adjustment column rotatably disposed in the installation through hole, and the adjustment column is provided with an adjustment column through hole for controlling the interruption of water flow in the water inlet pipe fitting.

[0012] As a preferred embodiment of the present invention, the two ends of the adjusting column extend out of the mounting through holes, one end of the adjusting column extending out of the mounting through holes is provided with an adjusting handle, and the other end of the adjusting column extending out of the mounting through holes is provided with a limiting protrusion.

[0013] As a preferred embodiment of the present invention, the adjustment part is provided with an arc-shaped groove, and the adjustment column is provided with a stop block located in the arc-shaped groove. The stop block is used to limit the rotation angle of the adjustment column to 90°. The stop block is provided with a first magnetic block at both ends of its rotation direction, and a second magnetic block that attracts the first magnetic block is provided at both ends of the arc-shaped groove.

[0014] As a preferred embodiment of the present invention, the handle is provided with a conductive rod mounting cavity communicating with the conductive cylinder in the handle, the conductive rod mounting cavity is provided with a conductive rod, the conductive rod mounting cavity is provided with an elastic mechanism for abutting the conductive rod against the conductive cylinder, the inner wall of the opening of the conductive rod mounting cavity is provided with a threaded hole, the elastic mechanism includes an adjusting screw provided at the threaded hole, and a spring is provided between the adjusting screw and the conductive rod for abutting the conductive rod against the conductive cylinder.

[0015] As a preferred embodiment of the present invention, the adjusting screw is provided with a first connecting cable, the adjusting part is provided with an arc-shaped conductive plate, one end of the first connecting cable passes through a spring and is connected to a conductive rod, the other end of the first connecting cable passes through the adjusting screw and is connected to one end of the arc-shaped conductive plate, the other end of the arc-shaped conductive plate is connected to a first metal conductive plate located on the side wall of one end of the arc-shaped groove, the adjusting handle is provided with an electric control board mounting cavity, the electric control board mounting cavity is provided with an electric control board, the adjusting handle is provided with an adjusting button electrically connected to the electric control board, the adjusting column is provided with a second connecting cable, one end of the second connecting cable is electrically connected to the electric control board, the stop block is provided with a second metal conductive plate, the other end of the second connecting cable is electrically connected to the second metal conductive plate, when the adjusting column rotates to the point where the water flow is cut off, the first metal conductive plate and the second metal conductive plate come into contact.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention achieves convenient disassembly and assembly of the annular electrode through the transition fit between the conductive post and the conductive post mounting cavity, and the transition fit between the connector and the outer sleeve. When replacing, only the connector and the outer sleeve need to be separated, and the conductive post can be pulled out to replace the annular electrode. No special tools are required. Moreover, the transition fit can take into account both connection stability and disassembly convenience, thus extending the overall service life of the electric cutting knife body.

[0018] 2. This invention employs a dual conductive protection structure: firstly, the continuous elastic force of a spring holds the conductive rod against the conductive cylinder, adaptively compensating for component wear and ensuring continuous and tight contact in the current conduction path; secondly, the connecting structure where the conductive post extends into the groove of the conductive cylinder increases the conductive contact area and reduces contact resistance. This dual structure collectively avoids current fluctuations caused by intraoperative vibration or stress, ensuring the stability of the annular electrode cutting and coagulation effects, and reducing the risk of tissue burns.

[0019] 3. This invention achieves deep integration of irrigation and electrocautery functions through an integrated water flow channel, avoiding the hassle of frequent instrument replacements; the limit adjustment column and magnetic block positioning structure enable precise on / off control of the irrigation fluid, providing clear operational feedback. Doctors can flexibly adjust according to the surgical rhythm, solving the defects of traditional irrigation functions such as "inconvenient adjustment" and "untimely cleaning of the surgical field", thus improving surgical efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the electrosurgical resection blade used in gynecological endoscopic surgery in Example 1;

[0021] Figure 2 This is a cross-sectional view of the electrosurgical resuscitator used in gynecological endoscopic surgery in Example 1;

[0022] Figure 3This is a schematic diagram of the connector structure in Example 1;

[0023] Figure 4 This is a schematic diagram of the conductive pillar and the ring electrode in Example 1;

[0024] Figure 5 This is a schematic diagram of the conductive cylinder in Example 1;

[0025] Figure 6 This is a schematic diagram of the water inlet pipe fitting in Example 1;

[0026] Figure 7 This is a cross-sectional view of the water inlet pipe fitting in Example 1;

[0027] Figure 8 This is a schematic diagram of the adjusting component in Example 1;

[0028] Figure 9 for Figure 6 Enlarged view of section A;

[0029] Figure 10 This is a schematic diagram of the tool holder structure in Example 1;

[0030] Figure 11 This is a schematic diagram of the working principle of the electric cutter body in Example 1.

[0031] The attached figures are labeled as follows:

[0032] 100. Electric cutter body; 110. Blade holder; 120. Connector; 130. Water inlet fitting; 210. Outer sleeve; 220. Conductive post; 230. Ring electrode; 240. Conductive cylinder; 250. Water flow channel; 310. Conductive post mounting cavity; 320. Connecting sleeve; 330. Water outlet; 410. Conductive cylinder groove; 610. Adjustment part; 620. Adjustment post; 630. Arc-shaped groove; 640. Stop; 650. Adjustment button; 710. Mounting through hole; 720. Arc-shaped conductive sheet; 730. Electric control board mounting cavity; 740. Electronic control board; 750, second connecting cable; 810, adjusting column through hole; 820, adjusting handle; 830, limiting protrusion; 910, first magnetic block; 920, second magnetic block; 930, first metal conductive sheet; 940, second metal conductive sheet; 1010, conductive rod mounting cavity; 1020, conductive rod; 1030, threaded hole; 1040, adjusting screw; 1050, spring; 1060, first connecting cable; 1110, high-frequency electrosurgical unit; 1120, active wire; 1140, loop electrode; 1150, loop electrode wire. Detailed Implementation

[0033] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0034] Example 1, as Figure 1-4 As shown, this embodiment discloses an electrosurgical cutter for gynecological endoscopy, the core structure of which includes an electrosurgical cutter body 100. The electrosurgical cutter body 100 serves as the working electrode during surgery, used to achieve tissue cutting and coagulation functions.

[0035] The electrosurgical cutter body 100 includes a handle 110. An outer sleeve 210 is fitted to one end of the handle 110, and a connector 120 is connected to the end of the outer sleeve 210 furthest from the handle 110. A conductive post mounting cavity 310 is formed inside the connector 120, and a conductive post 220 is disposed within the conductive post mounting cavity 310. The conductive post 220 and the conductive post mounting cavity 310 are assembled using a transition fit. One end of the conductive post 220 extends out of the conductive post mounting cavity 310, and an annular electrode 230 is fixedly mounted on this extended end. The annular electrode 230 serves as a working component that directly acts on the lesion tissue, enabling precise cutting and simultaneous coagulation.

[0036] The connector 120 is provided with a connecting sleeve 320 at the end near the outer sleeve 210. The connecting sleeve 320 and the inner wall of the outer sleeve 210 are fitted with a transition fit, and the end of the connecting sleeve 320 extends into the inner wall of the outer sleeve 210, so as to achieve stable assembly of the connector 120 and the outer sleeve 210.

[0037] Combination Figure 5 As shown, a conductive cylinder 240 is installed inside the outer sleeve 210. A conductive cylinder groove 410 is formed at the end of the conductive cylinder 240 near the conductive post 220. The other end of the conductive post 220 away from the annular electrode 230 extends into the conductive cylinder groove 410 to form a conductive connection. One end of the conductive cylinder 240 is fixed to the tool holder 110 by a threaded connection, which facilitates assembly, disassembly and maintenance.

[0038] Combination Figures 6 to 8As shown, a water inlet fitting 130 is fitted to the other end of the scalpel handle 110, and one end of the water inlet fitting 130 is fixed to the scalpel handle 110 by a threaded connection. The connector 120, the conductive cylinder 240, and the interior of the scalpel handle 110 are all hollow structures. These hollow structures together form a water flow channel 250 for water supply. An outlet 330 is provided at the end of the connector 120, through which the rinsing fluid in the water flow channel 250 can flow out, achieving surgical field cleaning. An adjustment part 610 is provided in the middle of the water inlet fitting 130. An installation through hole 710 is provided in the adjustment part 610, penetrating the water flow channel 250 in the water inlet fitting 130. An adjustment component is fitted at the installation through hole 710. The adjustment component includes an adjustment column 620 rotatably disposed in the installation through hole 710. An adjustment column through hole 810 is provided in the adjustment column 620, which is used to control the flow of water in the water inlet fitting 130.

[0039] Combination Figure 9 As shown, both ends of the adjusting column 620 extend out of the mounting through holes 710. One end extending out of the mounting through holes 710 is provided with an adjusting handle 820, and the other end is provided with a limiting protrusion 830. An arc-shaped groove 630 is provided at the adjusting part 610, and a stop block 640 is provided on the adjusting column 620 located in the arc-shaped groove 630. The stop block 640 is used to limit the rotation angle of the adjusting column 620 to 90°. A first magnetic block 910 is provided on both ends of the side wall of the stop block 640 along its rotation direction, and a second magnetic block 920 is provided on both ends of the side wall of the arc-shaped groove 630 that attracts the first magnetic block 910. The positioning of the adjusting column 620 in the "on" and "off" positions is achieved by the attraction of the magnetic blocks.

[0040] Combination Figure 10 As shown, a conductive rod mounting cavity 1010 communicating with the conductive cylinder 240 is provided at the handle 110. A conductive rod 1020 is provided inside the conductive rod mounting cavity 1010, and an elastic mechanism for pressing the conductive rod 1020 against the conductive cylinder 240 is assembled inside. A threaded hole 1030 is provided in the inner wall of the opening of the conductive rod mounting cavity 1010. The elastic mechanism includes an adjusting screw 1040 provided in the threaded hole 1030. A spring 1050 is provided between the adjusting screw 1040 and the conductive rod 1020. The elastic force of the spring 1050 can keep the conductive rod 1020 pressed against the conductive cylinder 240, ensuring the stability of the conductive contact.

[0041] A first connecting cable 1060 is threaded through the adjusting screw 1040. One end of the first connecting cable 1060 passes through the spring 1050 and is connected to the conductive rod 1020. An arc-shaped conductive plate 720 is provided in the adjusting part 610. The other end of the first connecting cable 1060 passes through the spring 1050 and is connected to the arc-shaped conductive plate 720. The other end of the arc-shaped conductive plate 720 is connected to a first metal conductive plate 930 located on the side wall of one end of the arc-shaped groove 630. An electric control board mounting cavity 730 is provided in the adjusting handle 820. An electric control board 740 is provided in the electric control board mounting cavity 730. A component is connected to the electric control board 740. An active wire 1120 is used to electrically connect with the high-frequency electrosurgical unit 1110; an adjustment button 650 electrically connected to the control board 740 is provided at the adjustment handle 820; a second connecting cable 750 is provided in the adjustment column 620; one end of the second connecting cable 750 is electrically connected to the control board 740; a second metal conductive sheet 940 is provided at the stop block 640; the other end of the second connecting cable 750 is electrically connected to the second metal conductive sheet 940; when the adjustment column 620 is rotated to the water flow cut-off position, the first metal conductive sheet 930 contacts the second metal conductive sheet 940.

[0042] Combination Figure 11 As shown, the working principle of the electrosurgical resection knife for gynecological endoscopy in this embodiment is as follows:

[0043] The control board 740 is connected to the high-frequency electrosurgical unit 1110 via an active wire 1120, forming the current input starting point. The current is transmitted through the control board 740 to the second connecting cable 750, and then through the contact structure between the second metal conductive sheet 940 and the first metal conductive sheet 930 (in the state of water flow interruption) to the arc-shaped conductive sheet 720, and then transmitted to the conductive rod 1020 via the first connecting cable 1060.

[0044] The continuous elastic force of the spring 1050 in the elastic mechanism ensures that the conductive rod 1020 is always tightly pressed against the conductive cylinder 240, avoiding poor contact due to vibration or assembly gaps; the structure of the conductive post 220 extending into the groove 410 of the conductive cylinder further extends the conductive path, and finally transmits the high-frequency current to the annular electrode 230.

[0045] The annular electrode 230 serves as the active electrode, forming a complete circuit with the loop electrode 1140 on the patient's body surface. Utilizing the high-density heat generated at the electrode tip by the high-frequency current, it achieves tissue cutting (cell vaporization and rupture) and coagulation (cell drying) functions. Furthermore, the annular structure can form a regular cutting trajectory, adapting to the needs of delicate intrauterine operations.

[0046] External irrigation fluid (such as saline) enters the hollow water flow channel 250 of the scalpel handle 110, conductive cylinder 240, and connector 120 through the inlet pipe 130, and is finally precisely sprayed onto the surgical area through the outlet 330 to promptly remove blood and tissue debris, ensuring a clear surgical field. Rotating the adjustment handle 820 causes the adjustment column 620 to rotate within the mounting through hole 710. When the adjustment column through hole 810 is aligned with the water flow channel 250, the irrigation fluid flows normally; when the adjustment column rotates 90° (the stop block 640 abuts against the end of the arc-shaped groove 630), the solid part of the adjustment column blocks the water flow channel, achieving cutoff. The cooperation between the stop block 640 and the arc-shaped groove 630 limits the rotation angle, and the adsorption effect of the first magnetic block 910 and the second magnetic block 920 keeps the adjustment column stable in the "open" and "closed" positions, avoiding abnormal water flow caused by accidental contact during surgery.

[0047] The connector 120 is transitionally fitted to the outer sleeve 210 via the connecting sleeve 320, and the conductive post 220 is transitionally fitted to the conductive post mounting cavity 310, which not only ensures assembly stability but also provides operability for replacing the annular electrode 230. The threaded connection structure of the conductive cylinder 240, the water inlet pipe fitting 130, and the knife holder 110 realizes modular assembly of components, which is convenient for maintenance and replacement.

[0048] The gynecological endoscopic surgical electrosurgical knife of this embodiment achieves the following technical effects through the above technical solution:

[0049] In existing technologies, annular electrodes are mostly welded or press-fitted, which can easily damage components during replacement. This embodiment achieves convenient disassembly and assembly of the annular electrode 230 through the transition fit between the conductive post 220 and the conductive post mounting cavity 310, and between the connector 120 and the outer sleeve 210. Replacement only requires separating the connector 120 and the outer sleeve 210 and pulling out the conductive post 220; no special tools are needed. Furthermore, the transition fit balances connection stability and ease of disassembly, extending the overall service life of the electric cutting blade body 100.

[0050] To address the issue of poor surgical outcomes due to poor conductive contact in existing technologies, this embodiment employs a dual conductive protection structure: First, an elastic mechanism (including an adjusting screw 1040 and a spring 1050) uses the continuous elastic force of the spring 1050 to press the conductive rod 1020 against the conductive cylinder 240, adaptively compensating for component wear and ensuring continuous and tight contact in the current conduction path; second, a connecting structure where the conductive post 220 extends into the conductive cylinder groove 410 of the conductive cylinder 240 increases the conductive contact area and reduces contact resistance. This dual structure collectively prevents current fluctuations caused by intraoperative vibration or stress, ensuring the stability of the cutting and coagulation effects of the annular electrode 230 and reducing the risk of tissue burns.

[0051] Existing irrigation functions suffer from low control precision and poor integration with the conductive system. In this embodiment, the gynecological endoscopic surgical electrosurgical knife achieves deep integration of irrigation and electrosurgical functions through an integrated water flow channel 250 (through the handle 110, conductive cylinder 240, and connector 120), avoiding the inconvenience of frequent instrument replacements. The limiting adjustment column 620 and the magnetic block positioning structure (including a stop block 640, an arc-shaped groove 630, a first magnetic block 910, and a second magnetic block 920) enable precise on / off control of the irrigation fluid, providing clear operational feedback. Doctors can flexibly adjust the flow according to the surgical rhythm, solving the shortcomings of traditional irrigation functions such as "inconvenient adjustment" and "untimely cleaning of the surgical field," thus improving surgical efficiency.

[0052] The water flow channel 250 and the conductive components (conductive rod 1020, conductive cylinder 240, conductive column 220) are independent of each other, avoiding contact between the irrigation fluid and the current, and reducing the risk of leakage or short circuit. Through the contact or separation state of the first metal conductive sheet 930 and the second metal conductive sheet 940, the circuit can be synchronously controlled (such as reducing standby power) when the water flow is cut off, further ensuring intraoperative safety and avoiding accidental energy output in non-operational states.

[0053] The threaded connection between the conductive tube 240, the water inlet fitting 130, and the handle 110 enables modular replacement of components. If a component (such as the water inlet fitting 130) is damaged, it is not necessary to replace the entire electrosurgical body 100, thus reducing clinical maintenance costs. The settings of the adjustment handle 820 and the adjustment button 650 conform to surgical operating habits. The stop block 640, the arc-shaped groove 630, the first magnetic block 910, and the second magnetic block 920 eliminate the need for visual confirmation of water flow adjustment, improving the efficiency of operation in minimally invasive procedures, especially suitable for the delicate surgical needs of the narrow space inside the uterine cavity.

[0054] The annular structure of the annular electrode 230 can form a regular cutting trajectory, reducing accidental damage to the normal endometrium; the moderate contact area between the annular electrode 230 and the tissue can achieve simultaneous cutting and coagulation, reducing the risk of intraoperative bleeding, and is suitable for the treatment of lesions in hidden locations such as the uterine cavity sidewall and uterine horn, further enhancing the precision of gynecological endoscopic surgery.

[0055] The specific workflow of the electrosurgical resuscitator used in gynecological endoscopy in this embodiment is as follows:

[0056] Take the annular electrode 230 and fix it to the protruding end of the conductive post 220; then assemble the conductive post 220 with the conductive post mounting cavity 310 of the connector 120 using a transition fit, so that the end of the conductive post 220 away from the annular electrode protrudes from the conductive post mounting cavity 310.

[0057] The connecting sleeve 320 of the connector 120 is fitted with the inner wall of the outer sleeve 210, so that the end of the connecting sleeve 320 extends into the outer sleeve 210, thus fixing the connector 120 and the outer sleeve 210; at the same time, it is ensured that the end of the conductive post 220 away from the annular electrode 230 extends into the conductive tube groove 410 of the conductive tube 240 inside the outer sleeve 210, forming a conductive path connection.

[0058] One end of the conductive cylinder 240 is assembled and fixed to the knife handle 110, and then one end of the water inlet pipe 130 is threaded to the end of the knife handle 110 away from the outer sleeve, thus completing the overall assembly of the electric cutter body 100.

[0059] Press the adjustment button 650 on the adjustment handle 820 to initially check whether the current transmission path is unobstructed through the electronic control board 740. At the same time, observe whether the spring 1050 of the elastic mechanism tightly presses the conductive rod 1020 against the conductive cylinder 240 to avoid poor contact.

[0060] Introduce a small amount of saline solution into the inlet pipe 130. Rotate the adjusting handle 820 to rotate the adjusting column 620. Observe whether the saline solution can pass through the hollow water flow channel 250 of the inlet pipe 130, knife handle 110, conductive cylinder 240, and connector 120 in sequence, and finally flow out smoothly from the outlet 330 when the through hole 810 of the adjusting column is aligned with the water flow channel 250, confirming that there is no blockage. Then rotate the adjusting column 620 to 90° (the stop block 640 abuts against the end of the arc-shaped groove 630, and the first magnetic block 910 and the second magnetic block 920 are attracted and positioned) to check whether the water flow is completely cut off and to ensure that the flushing control function is normal.

[0061] The active wire 1120 of the control board 740 is connected to the output terminal of the high-frequency electrosurgical unit 1110 to form a current input path; at the same time, the loop electrode 1140 of the high-frequency electrosurgical unit is attached to the patient's body surface (such as the inner thigh). The loop electrode 1140 is connected to the loop input terminal of the high-frequency electrosurgical unit 1110 through the loop electrode wire 1150, so that the ring electrode 230, the patient tissue, the loop electrode 1140, and the high-frequency electrosurgical unit 1110 constitute a complete high-frequency current loop.

[0062] Connect the output end of the external sterile irrigation solution (such as saline) supply device to the end of the water inlet fitting 130 away from the handle to ensure that the irrigation solution can be stably input into the water flow channel 250 to prepare for intraoperative cleaning of the surgical field.

[0063] According to the surgical requirements (such as cutting endometrial polyps or separating intrauterine adhesions), the control board 740 sends a command to the control button 650 on the control handle 820, and the control board 740 controls the high-frequency electrosurgical unit 1110 to output a high-frequency current of corresponding intensity.

[0064] The high-frequency current is transmitted to the control board 740 via the active wire 1120, and then to the second metal conductive plate 940 on the stop block 640 via the second connecting cable 750. If the water flow is cut off at this time (the adjusting column 620 rotates 90°), the second metal conductive plate 940 contacts the first metal conductive plate 930 on the side wall of the arc groove 630, and the current is further transmitted to the conductive rod 1020 via the arc conductive plate 720 and the first connecting cable 1060.

[0065] Under the action of the spring 1050 of the elastic mechanism, the conductive rod 1020 closely abuts against the conductive cylinder 240, and the current is transmitted through the conductive cylinder 240 to the conductive post 220 extending into the groove 410 of the conductive cylinder, and finally reaches the annular electrode 230.

[0066] When the ring electrode 230 contacts the lesion tissue, the high-frequency current generates high-density heat at the contact point between the electrode and the tissue, achieving tissue cutting (cell vaporization and rupture) or coagulation (cell drying and hemostasis); its ring structure can form a regular cutting trajectory, which is suitable for operation in the narrow space of the uterine cavity and reduces accidental damage to the normal endometrium.

[0067] When blood or tissue debris obstructs the view in the surgical area, the doctor turns the adjustment handle 820 with one hand, causing the adjustment column 620 to rotate within the mounting through hole 710 (the stop block 640 slides along the arc-shaped groove 630, and the first magnetic block 910 separates from the originally adsorbed second magnetic block 920), until the adjustment column through hole 810 is completely aligned with the water flow channel 250 (the stop block 640 abuts against the other end of the arc-shaped groove 630, and the first magnetic block 910 and the second magnetic block 920 are adsorbed and positioned in the new position), and the irrigation fluid is sprayed from the outlet 330 along the water flow channel 250 to the surgical area to clean the surgical field in a timely manner.

[0068] Once the field of vision is clear, rotate the adjusting handle 820 in the opposite direction until the adjusting column 620 rotates 90°. The solid part of the adjusting column blocks the water flow channel 250, and the flushing fluid stops flowing out. At the same time, the second metal conductive sheet 940 comes into contact with the first metal conductive sheet 930 again to ensure the stability of the current path for the electrocautery coagulation function.

[0069] After the surgery, first turn off the high-frequency electrosurgical unit 1110 and the irrigation fluid supply device, disconnect the active wire 1120 of the control board 740 and the irrigation fluid supply line, and remove the circuit electrode 1140 from the patient's body surface.

[0070] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. An electrosurgical resectoscope for gynecological endoscopy, characterized in that: The device includes an electric cutting knife body (100), which includes a handle (110). One end of the handle (110) is provided with an outer sleeve (210). The end of the outer sleeve (210) away from the handle (110) is provided with a connector (120). The connector (120) is provided with a conductive post mounting cavity (310). The conductive post mounting cavity (310) is provided with a conductive post (220) that transitionally fits with the conductive post mounting cavity (310). One end of the conductive post (220) extends out of the conductive post mounting cavity (310). The end of the conductive post (220) extending out of the conductive post mounting cavity (310) is provided with an annular electrode (230). The outer sleeve (210) is provided with a conductive cylinder (240). The end of the conductive cylinder (240) near the conductive post (220) is provided with a conductive cylinder groove (410). The other end of the conductive post (220) extends into the conductive cylinder groove (410). The connector (120) has a connecting sleeve (320) at the end near the outer sleeve (210) that transitions with the inner wall of the outer sleeve (210), and the end of the connecting sleeve (320) extends into the outer sleeve (210); The other end of the handle (110) is provided with a water inlet pipe (130), a connector (120), a conductive cylinder (240), and the inside of the handle (110) is hollow to form a water flow channel (250) for water to flow. The end of the connector (120) is provided with a water outlet (330) for water to flow out of the water flow channel. The water inlet pipe fitting (130) is provided with an adjustment section (610) in the middle. The adjustment section (610) is provided with an installation through hole (710) that penetrates the water flow channel (250) in the water inlet pipe fitting (130). An adjustment component is provided at the installation through hole (710). The adjustment component includes an adjustment column (620) that is rotatably disposed in the installation through hole (710). The adjustment column (620) is provided with an adjustment column through hole (810) for controlling the water flow interruption in the water inlet pipe fitting (130).

2. The electrosurgical resection knife for gynecological endoscopy according to claim 1, characterized in that: One end of the conductive tube (240) is threaded to the knife handle (110).

3. The electrosurgical resection knife for gynecological endoscopy according to claim 1, characterized in that: One end of the water inlet fitting (130) is threaded to the knife holder (110).

4. The electrosurgical resection knife for gynecological endoscopy according to claim 1, characterized in that: The two ends of the adjusting column (620) extend out of the mounting through hole (710). One end of the adjusting column (620) extending out of the mounting through hole (710) is provided with an adjusting handle (820), and the other end of the adjusting column (620) extending out of the mounting through hole (710) is provided with a limiting protrusion (830).

5. The electrosurgical resection knife for gynecological endoscopy according to claim 4, characterized in that: An arc-shaped groove (630) is provided at the adjustment part (610), and a stop block (640) located in the arc-shaped groove (630) is provided at the adjustment column (620). The stop block (640) is used to limit the rotation angle of the adjustment column (620) to 90°. A first magnetic block (910) is provided at both ends of the stop block (640) along its rotation direction, and a second magnetic block (920) that attracts the first magnetic block (910) is provided at both ends of the arc-shaped groove (630).

6. The electrosurgical resection knife for gynecological endoscopy according to claim 5, characterized in that: The handle (110) is provided with a conductive rod mounting cavity (1010) that communicates with the conductive cylinder (240) in the handle (110). The conductive rod mounting cavity (1010) is provided with a conductive rod (1020). The conductive rod mounting cavity (1010) is provided with an elastic mechanism for abutting the conductive rod (1020) against the conductive cylinder (240). The inner wall of the opening of the conductive rod mounting cavity (1010) is provided with a threaded hole (1030). The elastic mechanism includes an adjusting screw (1040) provided at the threaded hole (1030). A spring (1050) is provided between the adjusting screw (1040) and the conductive rod (1020) for abutting the conductive rod (1020) against the conductive cylinder (240).

7. The electrosurgical resection knife for gynecological endoscopy according to claim 6, characterized in that: The adjusting screw (1040) is provided with a first connecting cable (1060), and the adjusting part (610) is provided with an arc-shaped conductive sheet (720). One end of the first connecting cable (1060) passes through the spring (1050) and is connected to the conductive rod (1020). The other end of the first connecting cable (1060) passes through the adjusting screw (1040) and is connected to one end of the arc-shaped conductive sheet (720). The other end of the arc-shaped conductive sheet (720) is connected to a first metal conductive sheet (930) located on the side wall of one end of the arc-shaped groove (630). The adjusting handle (820) is provided with an electric control board mounting cavity (730). An electrical control board (740) is provided in the mounting cavity (730). An adjustment button (650) electrically connected to the electrical control board (740) is provided at the adjustment handle (820). A second connecting cable (750) is provided in the adjustment column (620). One end of the second connecting cable (750) is electrically connected to the electrical control board (740). A second metal conductive sheet (940) is provided at the stop block (640). The other end of the second connecting cable (750) is electrically connected to the second metal conductive sheet (940). When the adjustment column (620) is rotated to the point where the water flow is cut off, the first metal conductive sheet (930) and the second metal conductive sheet (940) come into contact.

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