A sealing structure for an electroresection mirror

Abstract

The present application discloses a sealing structure for a resectoscope, relating to the technical field of sealing structures, including a first sealing ring which is disposed around the outer wall of the inner sheath of the resectoscope, and the water inlet of the inner sheath of the resectoscope is located between the first sealing rings; a spring clip which includes a jacket, a first spring and a second spring; the jacket is slidably sleeved on the outer peripheral side wall of the inner sheath of the resectoscope, a first spring groove is formed at one end of the jacket facing the outer sheath of the resectoscope, the first spring is disposed in the first spring groove, and the first spring pushes the outer sheath of the resectoscope away from the jacket; a second spring groove is formed at one end of the jacket facing away from the outer sheath of the resectoscope, the second spring is installed in the second spring groove, and the second spring pushes the inner sheath of the resectoscope away from the jacket; a second sealing ring, a through hole for the electrode cutter head to pass through is formed in the operation handle of the resectoscope, the second sealing ring is located between the outer wall of the electrode cutter head and the hole wall of the through hole, and a locking conical surface is formed on the outer peripheral side wall of the second sealing ring. The present application can improve the sealing performance.

Description

Technical Field

[0001] This application relates to the technical field of sealing structures, and in particular to a sealing structure for an electroresection mirror. Background Art

[0002] In recent years, with the development of minimally invasive surgical techniques, the electroresection mirror, as an important medical device, has been widely used in multiple departments such as urology and gynecology.

[0003] When using an electroresection mirror, normal saline is usually injected into the body to expand the field of view and clear the blood, thereby improving the visibility and safety of the operation. However, one of the common problems encountered during the use of the electroresection mirror is the poor sealing between the inner sheath and the outer sheath, as well as the water leakage caused by the poor sealing between the operating handle and the electrode tip. This not only affects the surgical process but may also contaminate the surgical area and increase the risk of infection.

[0004] Currently, the common sealing measures for electroresection mirrors on the market often use rubber sealing rings. Such sealing rings are usually installed inside the operating handle of the electroresection mirror and achieve sealing through a pressing force. However, the rubber sealing ring is prone to aging and deformation during long-term use, resulting in a decline in sealing performance. Summary of the Invention

[0005] In order to improve the sealing performance, this application provides a sealing structure for an electroresection mirror.

[0006] This application provides a sealing structure for an electroresection mirror, adopting the following technical solution:

[0007] A sealing structure for an electroresection mirror,

[0008] including a first sealing ring, which is arranged around the outer wall of the inner sheath of the electroresection mirror. The first sealing ring is located between the inner wall of the outer sheath of the electroresection mirror and the outer wall of the inner sheath of the electroresection mirror. The first sealing ring is symmetrically arranged, and the water inlet of the inner sheath of the electroresection mirror is located between the first sealing rings;

[0009] a spring clip, including a jacket, a first spring, and a second spring;

[0010] The jacket is slidably sleeved on the outer peripheral side wall of the inner sheath of the electroresection mirror. One end of the jacket facing the outer sheath of the electroresection mirror forms a first spring groove, and the first spring is arranged in the first spring groove. The first spring pushes the outer sheath of the electroresection mirror away from the jacket;

[0011] One end of the jacket facing away from the outer sheath of the electroresection mirror forms a second spring groove, and the second spring is installed in the second spring groove. The second spring pushes the inner sheath of the electroresection mirror away from the jacket;

[0012] The second sealing ring is arranged on the operation handle of the electrocision mirror. The operation handle of the electrocision mirror is formed with a through hole for the electrode knife head to pass through. The second sealing ring is located between the outer wall of the electrode knife head and the hole wall of the through hole, and a locking conical surface is formed on the outer peripheral side wall of the second sealing ring.

[0013] By adopting the above technical solutions, the first sealing ring is embedded into the gap between the inner sheath and the outer sheath through the annular structure, achieving a preliminary sealing effect. Then, under the action of the first spring and the second spring, the inner sheath and the outer sheath of the electrocision mirror press against the first sealing ring in a direction away from each other. When the first sealing ring ages, the first sealing ring can maintain the pressing degree between the inner sheath of the electrocision mirror and the outer sheath of the electrocision mirror, further enhancing the sealing effect. The second sealing ring is tightly combined with the hole wall of the through hole through the locking conical surface, effectively reducing the leakage of liquid from the gap between the operation handle and the electrode knife head. When the second sealing ring ages, the second sealing ring can be adapted to maintain the sealing performance between the through hole and the electrode knife head of the electrocision mirror.

[0014] Optionally, a nano waterproof coating is provided on the outer walls of the first sealing ring and the second sealing ring.

[0015] By adopting the above technical solutions, a nano waterproof coating is provided on the outer walls of the first sealing ring and the second sealing ring, which can significantly enhance the waterproof performance of the sealing ring, effectively reduce liquid penetration, further improve the overall sealing effect of the electrocision mirror, reduce the occurrence of water leakage, and ensure the safety and reliability of the surgical process.

[0016] Optionally, the sealing structure further includes a connecting seat, a sealing airbag, and an extrusion plate;

[0017] The connecting seat includes a first connecting seat and a second connecting seat. The first connecting seat is disposed around the outer wall of the inner sheath of the electrocision mirror, and a first connecting groove for the first sealing ring to be snapped into is formed on the outer peripheral side wall of the first connecting seat;

[0018] The second connecting seat is disposed around the inner peripheral side wall of the outer sheath of the electrocision mirror, and a second connecting groove for the first sealing ring to be snapped into is formed on the second connecting seat;

[0019] The sealing airbag is respectively disposed on the side wall of the first connecting groove away from the notch and the side wall of the second connecting groove away from the notch;

[0020] An air supply airbag is arranged inside the connecting seat, and a connecting pipe for connecting the air supply airbag and the sealing airbag is arranged on the connecting seat;

[0021] The extrusion plate includes a first extrusion plate and a second extrusion plate. The first extrusion plate is slidably disposed on the side wall of the first connecting groove away from the jacket;

[0022] The first sealing ring pushes the first pressing plate to press the corresponding air supply airbag. At this time, the sealing airbag expands into the first connecting groove and wraps the inner peripheral side wall of the first sealing ring.

[0023] The second pressing plate is slidably arranged on the groove wall of the second connecting groove close to the jacket side. The first sealing ring pushes the second pressing plate to press the corresponding air supply airbag. At this time, the corresponding sealing airbag expands into the second connecting groove and wraps the outer peripheral side wall of the first sealing ring.

[0024] By adopting the above technical solution, the combined design of the connecting seat, the sealing airbag and the pressing plate enables the first sealing ring to automatically expand when pressed, fit more closely to the inner first sealing ring, and further enhance the sealing performance.

[0025] Optionally, the pressing plate is inclined to form a guiding surface for guiding the first sealing ring into the first connecting groove and the second connecting groove.

[0026] By adopting the above technical solution, the design of the guiding surface enables the first sealing ring to enter the first connecting groove and the second connecting groove more smoothly, reduces the resistance during installation, and improves the assembly efficiency.

[0027] Optionally, a transmission seat is arranged in the connecting seat, and a transmission cavity is formed in the transmission seat;

[0028] The connecting pipe includes a first pipe body and a second pipe body. The first pipe body communicates the air supply airbag with the transmission cavity, and the second pipe body communicates the transmission cavity and the sealing airbag;

[0029] A blocking plate is hinged in the transmission seat, and the transmission seat is provided with a control component for controlling the blocking plate to block the pipe orifice of the first pipe body;

[0030] When the pressing plate presses the air supply airbag, the blocking plate flips away from the first pipe body.

[0031] By adopting the above technical solution, when the pressing plate presses the air supply airbag, the blocking plate flips away from the first pipe body, ensuring that the gas can smoothly be transmitted from the air supply airbag to the sealing airbag, thereby realizing the effective wrapping and sealing of the first sealing ring, and at the same time being able to restrict the air flow in the sealing airbag from flowing back into the air supply airbag.

[0032] Optionally, the control component includes a first magnet and a second magnet with opposite magnetic poles. The first magnet is arranged on the side of the blocking plate facing the first pipe body, and the second magnet is arranged on the transmission seat;

[0033] When the first magnet abuts against the second magnet, the blocking plate blocks the pipe orifice on the side of the first pipe body away from the air supply airbag.

[0034] By adopting the above technical solution, through the interaction between the first magnet and the second magnet with opposite magnetic poles, the automatic blocking of the first pipe body by the blocking plate is realized. Meanwhile, when gas flow is required, the blocking plate can quickly flip away from the first pipe body, ensuring smooth gas transmission and improving the overall performance and response speed of the sealing structure.

[0035] Optionally, the connecting seat is slidably provided with driving plates corresponding to and oppositely arranged with the pressing plates one by one, and the connecting seat is provided with a driving assembly;

[0036] When the first sealing ring disengages from the first connecting groove, the driving assembly drives the driving plate to slide into the first connecting groove, and at this time the driving assembly drives the blocking plate away from the first pipe body;

[0037] When the first sealing ring disengages from the second connecting groove, the driving assembly drives the driving plate to slide into the second connecting groove, and at this time the driving assembly drives the blocking plate away from the first pipe body.

[0038] By adopting the above technical solution, when the first sealing ring disengages from the first connecting groove or the second connecting groove, the driving assembly can automatically drive the driving plate to slide into the corresponding first connecting groove or second connecting groove, and at the same time drive the blocking plate away from the first pipe body, ensuring that the gas in the air supply airbag can be smoothly transmitted to the sealing airbag, enabling the sealing airbag to expand and wrap the first sealing ring, thereby effectively reducing the possibility of water leakage and improving the sealing performance of the first sealing ring.

[0039] Optionally, the driving assembly includes a driving spring and a driving rope;

[0040] The driving rope is slidably inserted into the connecting seat, one end of the driving rope is connected to the side of the blocking plate facing away from the first pipe body, and the other end is connected to the driving plate;

[0041] The driving spring is sleeved on the outer peripheral side of the driving rope and is located inside the connecting seat, one end of the driving spring abuts against the driving plate, and the other end abuts against the connecting seat.

[0042] By adopting the above technical solution, the driving assembly can effectively control the movement of the blocking plate, ensuring that when the first sealing ring disengages, the driving plate can drive the blocking plate away from the first pipe body through the driving rope, ensuring smooth gas flow, thereby enhancing the expansion effect of the sealing airbag and further improving the sealing performance.

[0043] Optionally, a connecting sealing ring is arranged on the outer peripheral side of the driving rope, and the connecting sealing ring is located inside the connecting seat.

[0044] By adopting the above technical solution, the setting of the connecting sealing ring effectively reduces the liquid leakage caused by the gap generated between the driving rope and the inner wall of the connecting seat during movement, and further improves the sealing performance of the entire sealing structure.

[0045] Optionally, the power plate is inclined with a sliding surface for the first sealing ring to slide.

[0046] By adopting the above technical solution, the sliding surface on the power plate can guide the first sealing ring to smoothly slide into or out of the first connection groove and the second connection groove, reduce the frictional resistance, ensure that the installation and disassembly of the sealing ring are more convenient, and at the same time reduce the damage of the first sealing ring caused by friction, further improving the reliability and service life of the sealing structure.

[0047] In summary, the present application includes at least one of the following beneficial effects:

[0048] 1. Through the action of the first spring and the second spring, the inner sheath of the electrocision mirror and the outer sheath of the electrocision mirror press against the first sealing ring in a direction away from each other, so that when the first sealing ring ages, the first sealing ring can maintain the pressing degree between the inner sheath of the electrocision mirror and the outer sheath of the electrocision mirror, further enhancing the sealing effect. The second sealing ring is tightly combined with the hole wall of the through hole through the locking conical surface, effectively reducing the seepage of liquid from the gap between the operating handle and the electrode tip, and when the second sealing ring ages, the second sealing ring can be adapted to maintain the sealing performance between the through hole and the electrode tip of the electrocision mirror;

[0049] 2. The combined design of the connecting seat, the sealing airbag and the pressing plate enables the first sealing ring to automatically expand when pressed, and fit more closely to the inner first sealing ring, further enhancing the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is the external structural schematic diagram of the first embodiment of the present application;

[0051] Figure 2 is the internal cross-sectional schematic diagram of the first embodiment of the present application;

[0052] Figure 3 is Figure 1 the enlarged schematic diagram of part A;

[0053] Figure 4 is Figure 1 the enlarged schematic diagram of part B;

[0054] Figure 5 is the internal cross-sectional schematic diagram of the second embodiment of the present application;

[0055] Figure 6 is Figure 5 the enlarged schematic diagram of part C.

[0056] Reference numerals: 1, first sealing ring; 2, spring clip; 21, jacket; 211, first spring groove; 212, second spring groove; 22, first spring; 23, second spring; 3, second sealing ring; 31, locking conical surface; 4, power plate; 41, sliding surface; 5, connecting seat; 51, first connecting seat; 511, first connecting groove; 52, second connecting seat; 521, second connecting groove; 53, transmission seat; 531, transmission cavity; 532, plugging plate; 54, air supply airbag; 55, connecting pipe; 551, first pipe body; 552, second pipe body; 6, sealing airbag; 7, extrusion plate; 71, first extrusion plate; 72, second extrusion plate; 73, guiding surface; 8, control assembly; 81, first magnet; 82, second magnet; 9, driving assembly; 91, driving spring; 92, driving rope; 921, connecting sealing ring. Detailed implementation manners

[0057] The following further describes the present application in detail with reference to the Figures 1-6 accompanying drawings.

[0058] An embodiment of the present application discloses a sealing structure for an electroresection mirror.

[0059] The inventors of the present application have found that in recent years, with the development of minimally invasive surgical techniques, electroresection mirrors, as an important medical device, have been widely used in multiple departments such as urology and gynecology. When an electroresection mirror is used, normal saline is usually injected into the body to expand the field of view and clear the blood, thereby improving the visibility and safety of the surgery. However, one of the common problems encountered during the use of an electroresection mirror is the water leakage phenomenon caused by poor sealing between the inner sheath and the outer sheath, as well as poor sealing between the operating handle and the electrode tip. This not only affects the surgical process but also may contaminate the surgical area and increase the risk of infection. For this reason, the present application mainly adopts a sealing structure for an electroresection mirror, achieving the effect of improving the sealing performance. The following is a further detailed description of the present application.

[0060] Embodiment 1

[0061] Referring to Figure 1 and Figure 2 the sealing structure for an electroresection mirror provided by the embodiment of the present application includes a first sealing ring 1, a spring clip 2, and a second sealing ring 3, achieving the effect of improving the sealing performance.

[0062] Referring to Figure 2 and Figure 3, specifically, the outer sheath of the resectoscope is sleeved outside the inner sheath of the resectoscope. A first sealing groove is formed circumferentially on the outer wall of the inner sheath of the resectoscope. The first sealing ring 1 surrounds the outer wall of the inner sheath of the resectoscope, and a part of the inner circumferential side is clamped and fixed in the first sealing groove. A second sealing groove extending circumferentially is formed on the inner wall of the outer sheath of the resectoscope. A part of the outer circumferential side of the first sealing ring 1 is clamped into the second sealing groove. At this time, the first sealing ring 1 is located between the inner wall of the outer sheath of the resectoscope and the outer wall of the inner sheath, realizing sealing.

[0063] At the same time, there are two first sealing rings 1 arranged symmetrically. A water inlet pipe is fixedly arranged on the outer wall of the top of the outer sheath of the resectoscope, and a water outlet pipe is fixedly arranged on the outer wall of the bottom of the outer sheath of the resectoscope; a water inlet is formed on the inner sheath of the resectoscope. The water inlet is aimed at the water inlet pipe and is misaligned with the water outlet pipe. The water inlet pipe and the water inlet are located between the two first sealing rings 1, and one of the first sealing rings 1 is located between the water inlet pipe and the water outlet pipe. At this time, the two first sealing rings 1 can form a water delivery cavity between the inner sheath of the resectoscope and the outer sheath of the resectoscope. The normal saline introduced into the water inlet pipe enters the water delivery cavity and then enters the water inlet, reducing the possibility of the introduced normal saline leaking directly out of the water delivery cavity.

[0064] The spring clip 2 is arranged between the outer sheath of the resectoscope and the inner sheath of the resectoscope, and is used to drive the outer sheath of the resectoscope and the inner sheath of the resectoscope to move away from each other, forming an axial cutting force, improving the pressing degree of the outer sheath of the resectoscope and the inner sheath of the resectoscope against the first sealing ring 1, and reducing the influence of the aging of the first sealing ring 1 on the sealing performance.

[0065] The spring clip 2 includes a jacket 21, a first spring 22 and a second spring 23. The jacket 21 is slidably sleeved on the outer wall of the inner sheath of the resectoscope. One end of the jacket 21 facing the outer sheath forms a first spring groove 211. The first spring 22 is installed in the first spring groove 211. One end of the first spring 22 abuts against the groove wall of the first spring groove 211 far from the notch side, and the other end abuts against the outer sheath of the resectoscope. When the first spring 22 elastically releases, it pushes the outer sheath of the resectoscope away from the jacket 21. At this time, the pressing degree of the side of the first sealing ring 1 close to the jacket 21 against the outer sheath of the resectoscope is improved.

[0066] One end of the jacket 21 facing away from the outer sheath of the resectoscope forms a second spring groove 212. The second spring 23 is installed in the second spring groove 212. One end of the second spring 23 abuts against the protruding part of the outer wall of the inner sheath of the resectoscope, and the other end of the second spring 23 abuts against the groove wall of the second spring groove 212 far from the notch side. When the second spring 23 elastically releases, it pushes the inner sheath of the resectoscope away from the jacket 21. At this time, the pressing degree of the side of the first sealing ring 1 far from the jacket 21 against the inner sheath of the resectoscope is improved.

[0067] The operating handle of the resectoscope is connected to the inner sheath of the resectoscope. Among them, the operating handle of the resectoscope is formed with a through hole, and the electrode cutter head of the resectoscope slides through the through hole. The second sealing ring 3 is snap-fitted and fixed on the wall of the through hole, and the electrode cutter of the resectoscope slides through the middle of the second sealing ring 3. At this time, the second sealing ring 3 realizes the seal between the electrode cutter of the resectoscope and the wall of the through hole, reducing the possibility of physiological saline leakage in the inner sheath of the resectoscope through the through hole.

[0068] See Figure 3 And Figure 4 , meanwhile, a locking conical surface 31 is formed by inclining the outer peripheral side wall of the second sealing ring 3, and a corresponding abutting surface is formed on the wall of the through hole. When the second sealing ring 3 is installed, the locking conical surface 31 abuts against the abutting surface, further enhancing the sealing performance between the second sealing ring 3 and the wall of the through hole and the electrode cutter of the resectoscope.

[0069] Meanwhile, in order to further improve the sealing performance of the first sealing ring 1 and the second sealing ring 3, a layer of nano waterproof coating can be coated on the outer surfaces of the first sealing ring 1 and the second sealing ring 3, further improving the anti-permeability ability and self-cleaning function of the first sealing ring 1 and the second sealing ring 3, and reducing the growth of bacteria.

[0070] The implementation principle of a sealing structure for a resectoscope in the first embodiment of the present application is as follows:

[0071] The first sealing ring 1 is embedded into the gap between the inner sheath and the outer sheath through an annular structure, achieving a preliminary sealing effect. Meanwhile, the symmetrically arranged first sealing rings 1 can form a double seal at the water inlet of the inner sheath, reducing the possibility of physiological saline leakage. Then, through the action of the first spring 22 and the second spring 23, the inner sheath and the outer sheath of the resectoscope are tightened against the first sealing ring 1 in a mutually separated direction, so that when the first sealing ring 1 ages, the first sealing ring 1 can maintain the degree of tightness with the inner sheath and the outer sheath of the resectoscope, further enhancing the sealing effect. The second sealing ring 3 is tightly combined with the wall of the through hole through the locking conical surface 31, effectively reducing the leakage of liquid from the gap between the operating handle and the electrode cutter head. And when the second sealing ring 3 ages, the second sealing ring 3 can be adapted to maintain the sealing performance between the through hole and the electrode cutter head of the resectoscope.

[0072] Embodiment Two

[0073] See Figure 5 And Figure 6 , the difference between the second embodiment of the present application and the first embodiment is that: the sealing structure further includes a connecting seat 5, a sealing airbag 6 and a pressing plate 7.

[0074] Among them, the connecting seat 5 includes a first connecting seat 51 and a second connecting seat 52. The first connecting seat 51 is arranged around the outer wall of the inner sheath of the electrocision mirror, and the first connecting seat 51 is fixedly installed in the first sealing groove; the second connecting seat 52 is arranged around the inner wall of the outer sheath of the electrocision mirror, and the second connecting seat 52 is fixedly installed in the second sealing groove.

[0075] A first connecting groove 511 is formed on the outer peripheral side wall of the first connecting seat 51, and a part of the inner peripheral side of the first sealing ring 1 is snap-fitted and installed in the first connecting groove 511; a second connecting groove 521 is formed on the inner peripheral side wall of the second connecting seat 52, and a part of the outer peripheral side of the first sealing ring 1 is snap-fitted and installed in the second connecting groove 521.

[0076] There are multiple sealing air bags 6, which correspond to the first connecting seat 51 and the second connecting seat 52 one by one, and the sealing air bags 6 are respectively embedded and fixed on the side wall of the first connecting groove 511 far from the notch side and the side wall of the second connecting groove 521 far from the notch side. The sealing air bags 6 are made of materials such as rubber and silica gel with elastic deformation ability. When air is supplied into the sealing air bags 6, the sealing air bags 6 expand into the corresponding first connecting groove 511 and the second connecting groove 521 respectively.

[0077] Air supply air bags 54 are fixedly installed in the first connecting seat 51 and the second connecting seat 52 respectively, and the air supply air bags 54 correspond to the sealing air bags 6 one by one. Connecting pipes 55 are fixedly connected in the first connecting seat 51 and the second connecting seat 52 respectively, and both ends of the connecting pipes 55 are communicated and fixed to the air supply air bags 54 and the sealing air bags 6 respectively.

[0078] The pressing plate 7 is in an annular plate structure. The pressing plate 7 includes a first pressing plate 71 and a second pressing plate 72. The first pressing plate 71 is slidably installed on the side wall of the first connecting groove 511 far from the side of the jacket 21. The first sealing ring 1 pushes the first pressing plate 71 to slide into the first connecting seat 51. At this time, the first pressing plate 71 presses the corresponding air supply air bag 54, so that the gas in the air supply air bag 54 flows into the corresponding sealing air bag 6. At this time, the sealing air bag 6 expands into the first connecting groove 511 and wraps the inner peripheral side wall of the first sealing ring 1, filling the gap between the part of the inner peripheral side wall of the first sealing ring 1 and the groove wall of the first connecting groove 511. And the sealing air bag 6 has a certain elastic deformation ability. When the first sealing ring 1 shrinks and deforms due to aging, the over-expanded sealing air bag 6 can quickly fill the gap that appears between the inner peripheral wall part of the first sealing ring 1 and the groove wall of the first connecting groove 511.

[0079] The second pressing plate 72 is slidably mounted on the groove wall of the first connection groove 511 close to the side of the jacket 21. The first sealing ring 1 pushes the second pressing plate 72 to slide into the second connection seat 52. At this time, the second pressing plate 72 presses the corresponding air supply airbag 54, so that the gas in the air supply airbag 54 flows into the corresponding sealing airbag 6. At this time, the sealing airbag 6 expands into the second connection groove 521 and wraps the outer peripheral side wall of the first sealing ring 1, filling the gap between the part of the outer peripheral side wall of the first sealing ring 1 and the groove wall of the second connection groove 521. And the sealing airbag 6 has a certain elastic deformation ability. When the first sealing ring 1 shrinks and deforms due to aging, the over-expanded sealing airbag 6 can quickly fill the gap that appears between the outer peripheral wall part of the first sealing ring 1 and the groove wall of the second connection groove 521.

[0080] Meanwhile, in order to facilitate the first sealing ring 1 to slide into the first connection groove 511 and the second connection groove 521, the pressing plate 7 is inclined to form a guiding surface 73. The first sealing ring 1 slides on the guiding surface 73, reducing the resistance encountered when the first sealing ring 1 enters the first connection groove 511 and the second connection groove 521.

[0081] Transfer seats 53 are respectively installed and fixed in the first connection seat 51 and the second connection seat 52. The transfer seats 53 correspond to the connecting pipes 55 one by one. A transfer cavity 531 is formed in the transfer seat 53. The connecting pipe 55 includes a first pipe body 551 and a second pipe body 552. The two ends of the first pipe body 551 are respectively connected and fixed to the air supply airbag 54 and the transfer seat 53. During use, the air supply airbag 54 and the transfer cavity 531 are communicated through the first pipe body 551. The two ends of the second pipe body 552 are respectively fixedly connected to the transfer seat 53 and the sealing airbag 6. During use, the transfer cavity 531 and the sealing airbag 6 are communicated through the second pipe body 552.

[0082] A sealing plate 532 is hinged inside the transfer base 53, and the area of the sealing plate 532 is smaller than the wall area of the transfer cavity 531 where the pipe orifice of the first pipe body 551 is provided. The transfer base 53 is provided with a control assembly 8 for controlling the sealing plate 532 to block the pipe orifice of the first pipe body 551. The control assembly 8 includes a first magnet 81 and a second magnet 82, and the magnetic properties of the first magnet 81 and the second magnet 82 are opposite. Among them, the first magnet 81 is embedded and fixed on the side wall of the sealing plate 532 facing the pipe orifice of the first pipe body 551, and the second magnet 82 is embedded and fixed on the wall of the transfer cavity 531 and adjacent to the pipe orifice of the first pipe body 551. When the first magnet 81 abuts against the second magnet 82, the sealing plate 532 blocks the pipe orifice of the first pipe body 551 on the side away from the air supply airbag 54, and the sealing plate 532 does not flip under the action of gravity, restricting the air flow in the sealing airbag 6 from flowing back to the air supply airbag 54. When the pressing plate 7 presses the air supply airbag 54, the air flow in the air supply airbag 54 pushes the sealing plate 532 to flip away from the first pipe body 551 until it abuts against the side wall of the transfer cavity 531 facing the pipe orifice of the first pipe body 551, so that the air flow can flow into the sealing airbag 6. After the air flow in the air supply airbag 54 stops flowing into the transfer cavity 531, the first magnet 81 and the second magnet 82 attract each other magnetically to control the sealing plate 532 to block the pipe orifice of the first pipe body 551.

[0083] Power plates 4 are slidably arranged on the groove walls on the side of the first connection groove 511 facing the first pressing plate 71 and on the side of the second connection groove 521 facing the second pressing plate 72 respectively. The power plates 4 are in an annular plate structure, and the power plates 4 can approach or move away from the pressing plate 7. The power plates 4 are inclined with sliding surfaces 41, and the first sealing rings 1 slide on the sliding surfaces 41 to reduce the resistance encountered when the first sealing rings 1 enter the first connection groove 511 and the second connection groove 521.

[0084] The connection base 5 is provided with a driving assembly 9, and the driving assembly 9 includes a driving spring 91 and a driving rope 92. The driving rope 92 can be made of nylon material, so that the surface of the driving rope 92 is smooth. There are two driving ropes 92, which respectively correspond to the two sealing plates 532 one by one. The two sealing plates 532 respectively slide through the first connection base 51 and the second connection base 52. One end of the driving rope 92 is fixedly connected to the side of the sealing plate 532 facing away from the first pipe body 551, and the other end is fixedly connected to the side of the power plate 4 facing away from the first sealing ring 1. The driving spring 91 is sleeved on the outer peripheral side of the driving rope 92 and corresponds one by one. The driving spring 91 is located inside the connection base 5. One end of the driving spring 91 abuts against the side of the power plate 4 facing away from the first sealing ring 1, and the other end abuts against the connection base 5.

[0085] When the first sealing ring 1 disengages from the first connection groove 511, the driving spring 91 drives the corresponding power plate 4 to slide into the first connection groove 511. At this time, the driving rope 92 pulls the corresponding blocking plate 532 away from the nozzle of the first pipe body 551, so that the corresponding sealing airbag 6 can deform and recover, and squeeze the air flow back into the air supply airbag 54. Similarly, when the first sealing ring 1 disengages from the second connection groove 521, the driving spring 91 drives the corresponding power plate 4 to slide into the second connection groove 521. At this time, the driving rope 92 pulls the corresponding blocking plate 532 away from the nozzle of the first pipe body 551, so that the corresponding sealing airbag 6 can deform and recover, and squeeze the air flow back into the air supply airbag 54. When the first sealing ring 1 is clamped into the first connection groove 511 or the second connection groove 521, the corresponding driving rope 92 is in a loose state.

[0086] Meanwhile, a connection sealing ring 921 is slidably sleeved on the outer peripheral side of the driving rope 92. The connection sealing ring 921 is located in the connection seat 5 and fixedly connected, which is beneficial to reducing the possibility of air leakage, and at the same time can prevent external pollutants from entering the inside of the connection seat 5, ensuring the cleanliness and sealing effect of the sealing system.

[0087] The implementation principle of a sealing structure for an electroresection mirror in the second embodiment of the present application is as follows:

[0088] When the first sealing ring 1 is respectively clamped into the first connection groove 511 and the second connection groove 521, the first sealing ring 1 pushes the extrusion plate 7 to extrude the air supply airbag 54, so that the corresponding sealing airbags 6 respectively expand into the first connection groove 511 and the second connection groove 521. At this time, the sealing airbags 6 wrap part of the outer peripheral sidewall and the inner peripheral sidewall of the first sealing ring 1, improving the sealing effect of the first sealing ring 1. And the sealing airbag 6 has a certain elastic deformation ability. When the first sealing ring 1 deforms due to aging and shrinking, the over-expanded sealing airbag 6 can quickly fill the gap that appears between the first sealing ring 1 and the groove walls of the first connection groove 511 and the second connection groove 521.

[0089] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sealing structure for an electroresection mirror, characterized in that: It includes a first sealing ring (1) which is arranged around the outer wall of the inner sheath of the electroresection mirror. The first sealing ring (1) is located between the inner wall of the outer sheath of the electroresection mirror and the outer wall of the inner sheath of the electroresection mirror. The first sealing ring (1) is symmetrically arranged, and the water inlet of the inner sheath of the electroresection mirror is located between the first sealing rings (1); A spring clip (2), which includes a jacket (21), a first spring (22) and a second spring (23); The jacket (21) is slidably sleeved on the outer peripheral side wall of the inner sheath of the electroresection mirror. One end of the jacket (21) facing the outer sheath of the electroresection mirror forms a first spring groove (211). The first spring (22) is arranged in the first spring groove (211), and the first spring (22) pushes the outer sheath of the electroresection mirror away from the jacket (21); One end of the jacket (21) facing away from the outer sheath of the electroresection mirror forms a second spring groove (212). The second spring (23) is installed in the second spring groove (212), and the second spring (23) pushes the inner sheath of the electroresection mirror away from the jacket (21); A second sealing ring (3) is arranged on the operation handle of the electroresection mirror. The operation handle of the electroresection mirror forms a through hole for the electrode cutter head to pass through. The second sealing ring (3) is located between the outer wall of the electrode cutter head and the hole wall of the through hole. The outer peripheral side wall of the second sealing ring (3) forms a locking conical surface (31); The sealing structure further includes a connecting seat (5), a sealing airbag (6) and a pressing plate (7); The connecting seat (5) includes a first connecting seat (51) and a second connecting seat (52). The first connecting seat (51) is arranged around the outer wall of the inner sheath of the electroresection mirror. The outer peripheral side wall of the first connecting seat (51) forms a first connecting groove (511) for the first sealing ring (1) to be inserted into; The second connecting seat (52) is arranged around the inner peripheral side wall of the outer sheath of the electroresection mirror. The second connecting seat (52) forms a second connecting groove (521) for the first sealing ring (1) to be inserted into; The sealing airbag (6) is respectively arranged on the side wall of the first connecting groove (511) far from the notch and the side wall of the second connecting groove (521) far from the notch; An air supply airbag (54) is arranged in the connecting seat (5), and the connecting seat (5) is provided with a connecting pipe (55) connecting the air supply airbag (54) and the sealing airbag (6); The pressing plate (7) includes a first pressing plate (71) and a second pressing plate (72). The first pressing plate (71) is slidably arranged on the side wall of the first connecting groove (511) far from the jacket (21); The first sealing ring (1) pushes the first pressing plate (71) to squeeze the corresponding air supply airbag (54). At this time, the sealing airbag (6) expands into the first connecting groove (511) and wraps the inner peripheral side wall of the first sealing ring (1); The second pressing plate (72) is slidably arranged on the groove wall of the second connecting groove (521) close to the side of the jacket (21). The first sealing ring (1) pushes the second pressing plate (72) to press the corresponding air supply airbag (54). At this time, the corresponding sealing airbag (6) expands into the second connecting groove (521) and wraps the outer peripheral side wall of the first sealing ring (1).

2. The sealing structure for a resectoscope according to claim 1, characterized in that: The outer walls of the first sealing ring (1) and the second sealing ring (3) are provided with nano waterproof coatings.

3. The sealing structure for an electroresection mirror according to claim 1, characterized in that: The pressing plate (7) is inclined to form a guiding surface (73) for guiding the first sealing ring (1) into the first connecting groove (511) and the second connecting groove (521).

4. A sealing structure for an electroresection mirror according to claim 1, characterized in that: A transmission seat (53) is arranged in the connecting seat (5), and a transmission cavity (531) is formed in the transmission seat (53). The connecting pipe (55) includes a first pipe body (551) and a second pipe body (552). The first pipe body (551) communicates the air supply airbag (54) with the transmission cavity (531), and the second pipe body (552) communicates the transmission cavity (531) and the sealing airbag (6). A blocking plate (532) is hinged in the transmission seat (53), and the transmission seat (53) is provided with a control assembly (8) for controlling the blocking plate (532) to block the pipe orifice of the first pipe body (551). When the pressing plate (7) presses the air supply airbag (54), the blocking plate (532) flips away from the first pipe body (551).

5. The sealing structure for an electroresection mirror according to claim 4, characterized in that: The control assembly (8) includes a first magnet (81) and a second magnet (82) with opposite magnetic polarities. The first magnet (81) is arranged on the side of the blocking plate (532) facing the first pipe body (551), and the second magnet (82) is arranged in the transmission seat (53). When the first magnet (81) abuts against the second magnet (82), the blocking plate (532) blocks the pipe orifice of the first pipe body (551) on the side far from the air supply airbag (54).

6. The sealing structure for an electroresection mirror according to claim 5, characterized in that: The connecting seat (5) is slidably provided with a power plate (4) corresponding to and oppositely arranged with the pressing plate (7), and the connecting seat (5) is provided with a driving assembly (9). When the first sealing ring (1) disengages from the first connecting groove (511), the driving assembly (9) drives the power plate (4) to slide into the first connecting groove (511). At this time, the driving assembly (9) drives the blocking plate (532) away from the first pipe body (551). When the first sealing ring (1) disengages from the second connecting groove (521), the driving assembly (9) drives the power plate (4) to slide into the second connecting groove (521). At this time, the driving assembly (9) drives the blocking plate (532) away from the first pipe body (551).

7. A sealing structure for an electroresection mirror according to claim 6, characterized in that: The driving assembly (9) includes a driving spring (91) and a driving rope (92). The driving rope (92) is slidably disposed through the connecting seat (5). One end of the driving rope (92) is connected to the side of the blocking plate (532) facing away from the first pipe body (551), and the other end is connected to the power plate (4). The driving spring (91) is sleeved on the outer peripheral side of the driving rope (92) and is located within the connecting seat (5). One end of the driving spring (91) abuts against the power plate (4), and the other end abuts against the connecting seat (5).

8. A sealing structure for an electroresection mirror according to claim 7, characterized in that: A connecting sealing ring (921) is disposed on the outer peripheral side of the driving rope (92), and the connecting sealing ring (921) is located within the connecting seat (5).

9. The sealing structure for an electro-resectoscope according to claim 6, characterized in that: The power plate (4) is inclined with a sliding surface (41) for the sliding of the first sealing ring (1).

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