Resectoscope

Abstract

The invention relates to the field of medical instruments, in particular to a resectoscope. The resectoscope comprises an inner sheath assembly, an outer sheath assembly and an operation assembly, the side face of the end, away from an outer sheath body, of an outer sheath tube protrudes outwards to form a protruding belly, a plurality of through holes are evenly formed in the protruding belly, and the tail end of the inner sheath tube is connected with a tube head extending to the outer side of the outer sheath tube. Besides, corrugations are arranged on the outer sheath tube, a first connector and a second connector are arranged on the upper side and the lower side of the outer sheath body respectively, the inner sheath body and the outer sheath body are connected through a first quick release assembly, the operation assembly comprises a first grip and a second grip, and quick disassembly and assembly are achieved through the second quick release assembly and a third quick release assembly. The effects of improving surgical operation flexibility, reducing tissue damage and simplifying instrument cleaning and maintenance are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an electroresectoscope. Background Art

[0002] Transurethral resection of the prostate is a minimally invasive surgery that removes prostate hyperplasia tissue in the urethra and then flushes the broken tissue out of the body. Transurethral resection of the prostate has the advantages of less trauma and faster recovery. It is currently the main surgical method for treating prostate hyperplasia.

[0003] During transurethral resection of the prostate, the operation needs to be performed in an environment where the bladder is filled with water. First, it can be used to flush the bladder and reduce infection; second, if bleeding occurs, it can be seen more clearly through the plasma resectoscope. At this time, it is necessary to insert the resectoscope into the urethra, up to the bladder, and inject sterile water.

[0004] At present, in order to simplify the structure of the resectoscope used in surgery, the usual structure is: the bipolar working handpiece is inserted into the resectoscope sheath, and the two are connected, and sterile water is poured into the resectoscope through the perfusion interface on the resectoscope sheath, so that the sterile water can pass into the bladder.

[0005] The existing resectoscope sheath design still has many shortcomings in terms of functionality and safety, especially in long-term continuous surgery, which can easily cause inconvenience to both doctors and patients and even postoperative injuries. Summary of the invention

[0006] In order to solve the problems in the prior art that the existing electrosurgical resectoscopes are prone to cause peripheral tissue damage during surgery and uneven injection of physiological saline, affecting the surgical effect, the present application provides an electrosurgical resectoscope.

[0007] The present application provides an electrosurgical resectoscope adopts the following technical solution: an electrosurgical resectoscope, comprising an inner sheath assembly, an outer sheath assembly and an operating assembly, the inner sheath assembly comprising an inner sheath body, one end of the inner sheath body being connected to an inner sheath tube, the outer sheath assembly comprising an outer sheath body, one end of the outer sheath body being connected to an outer sheath tube, the outer sheath body and the outer sheath tube being sleeved on the outside of the inner sheath body and the inner sheath tube, the outer sheath tube protrudes outward from the side surface of one end of the outer sheath body to form a convex belly, a number of through holes are evenly opened on the convex belly and the surface of the end of the outer sheath tube, and the end of the inner sheath tube is connected to a tube head extending to the outside of the outer sheath tube.

[0008] By adopting the above technical scheme, the design of the convex-belly-shaped water-permeable part significantly improves the water return effect. The design of the convex-belly-shaped water-permeable part increases the gap between the inner sheath tube and the outer sheath tube, and the convex-belly-shaped water-permeable part has a wider coverage area, which increases the flow rate of water flow and strengthens the water return effect, thereby significantly improving the surgical field of view and reducing the surgical risk; at the same time, the convex-belly-shaped water-permeable part is designed to be close to the tube mouth, thereby solving the problem of normal drainage at ultra-short distances such as the cervical opening, thereby achieving safe surgery at ultra-short distances, thereby expanding the scope of application of the electrosurgical resectoscope and achieving protection of the cavity.

[0009] Optionally, a plurality of corrugations are evenly spaced along the circumferential direction of the outer sheath tube, and the corrugations extend along the axial direction of the outer sheath tube.

[0010] By adopting the above technical solution, the corrugated design on the outer sheath can effectively disperse the pressure when the sheath enters and exits the cavity, reduce friction and damage, and reduce the risk of iatrogenic urethral stenosis; and improve the blood circulation of the urethra during long operations.

[0011] Optionally, a first interface and a second interface are respectively provided on the upper and lower sides of the outer sheath body, the first interface is connected to the inner sheath body and the inner sheath tube, and the second interface is connected to the outer sheath tube.

[0012] By adopting the above technical solution, the setting of the first interface and the second interface can realize liquid circulation between the inner sheath and the outer sheath, ensure the effective supply of physiological saline and the smooth discharge of waste liquid, further improve the cleaning effect, ensure a clear field of view during surgery, and reduce the risk of infection.

[0013] Optionally, the inner sheath body and the outer sheath body are connected via a first quick-release assembly.

[0014] By adopting the above technical solution, the quick disassembly and connection between the inner sheath body and the outer sheath body can be realized, which greatly shortens the preparation time before and after the operation and improves the efficiency of the operation. In addition, this design also facilitates the cleaning and disinfection of the instrument and reduces the risk of cross infection. Specifically, the use of the first quick-release component makes the connection between the inner sheath body and the outer sheath body more stable and reliable, and at the same time, it is easy to disassemble and assemble, which reduces the difficulty of operation for medical staff and further improves the safety and success rate of the operation.

[0015] Optionally, the first quick-release assembly includes a connecting seat connected to the outer sheath body, a sliding sleeve is provided along the axial sliding sleeve on the outer side of the connecting seat, a return spring is provided between the sliding sleeve and the connecting seat, at least three limiting holes are provided on the connecting seat, limiting balls are provided inside the limiting holes, and an annular groove is provided on the outer surface of the inner sheath body corresponding to the limiting balls.

[0016] By adopting the above technical solution, the design of the first quick-release assembly makes the connection between the inner sheath body and the outer sheath body more convenient and faster. Specifically, the use of the sliding sleeve and the reset spring on the outside of the connecting seat can be unlocked by a simple sliding action when disassembly is required, without the need for complicated tools or manual tightening devices. This design not only simplifies the operating process, but also improves work efficiency. In addition, the limiting ball inside the limiting hole cooperates with the annular groove on the inner sheath body to ensure the stability and reliability of the connection, prevent the inner sheath from separating from the outer sheath due to accidental vibration or improper operation during the operation, thereby improving the safety of the operation.

[0017] Optionally, an operating assembly is further included, which includes a first handle and a second handle, the first handle and the second handle are connected via a connecting tube, and the first handle and the inner sheath body are connected via a second quick-release assembly.

[0018] By adopting the above technical solution, the introduction of the operating component not only enhances the convenience of operating the resectoscope, but also improves the stability and safety during the operation.

[0019] Optionally, the second quick-release assembly includes a conical connecting portion connected to the first handle, a connecting ring is provided at the end of the inner sheath body, and bayonet pins are symmetrically provided on both sides of the inner wall of the connecting ring. The connecting portion is inserted into the connecting ring, and L-shaped grooves are provided on both sides of the connecting portion corresponding to the bayonet pins.

[0020] By adopting the above technical solution, the design of the second quick-release assembly makes the connection between the inner sheath body and the first handle more convenient and quick. Specifically, the use of the tapered connecting part and the connecting ring realizes the quick docking of the inner sheath body and the first handle. The bayonet pins arranged on both sides of the inner wall of the connecting ring cooperate with the L-shaped slots on both sides of the tapered connecting part to ensure the stability and reliability of the connection, while simplifying the assembly process and improving the efficiency of surgical preparation. This design not only improves the doctor's operating convenience, but also effectively shortens the preparation time before surgery, thereby further improving the overall efficiency and safety of the surgery.

[0021] Optionally, a positioning pin for limiting the connecting ring is provided above the connecting ring.

[0022] By adopting the above technical solution, the positioning pin arranged above the connecting ring can effectively prevent the connecting ring from loosening due to accidental collision or vibration during use, thereby ensuring a stable connection between the connecting ring and the first handle, and improving the reliability and safety of the electrosurgical resectoscope during surgery.

[0023] Optionally, an electrode mounting seat is provided in the middle of the connecting tube connecting the first handle and the second handle, and the electrode mounting seat and the second handle are connected via a spring frame.

[0024] By adopting the above technical solution, the electrode mounting seat is arranged in the middle of the connecting tube between the first handle and the second handle, so that the electrode can be easily installed, and the operability and stability of the electrode are improved. At the same time, the electrode mounting seat is connected to the second handle through a spring frame, so that the electrode can be flexibly adjusted during the operation to adapt to different surgical needs, thereby enhancing the flexibility and safety of the operation.

[0025] Optionally, a third quick-release assembly is provided at one end of the second handle, and the third quick-release assembly includes a fixed seat connected to the connecting tube, a rotating sleeve is provided on the outer side of the fixed seat, a guide pin is fixedly connected to the rotating ring, a spiral guide groove is provided on the surface of the fixed seat, the guide pin passes through the rotating ring and extends into the guide groove, and a block with an elliptical groove in the middle is provided inside the end of the rotating ring.

[0026] By adopting the above technical solution, the third quick-release component is used to install other equipment such as an endoscope. The setting of the third quick-release component realizes the rapid disassembly and assembly of other equipment, improves efficiency, and reduces the risk of surgical infection.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Improve the water return effect: The design of the convex permeable part increases the gap between the inner sheath and the outer sheath, and the convex permeable part covers a wider area, which increases the flow rate of water and strengthens the water return effect, thereby significantly improving the surgical field of view and cleaning effect, and reducing the surgical risk and infection risk; 2. Expand the scope of application: The design of the convex permeable part increases the reflux area, so that it can still drain water normally at ultra-short distances such as the cervical opening, expanding the scope of application of the resectoscope and realizing the protection of the cavity at the same time; 3. Reduce damage to the surgical channel: The corrugated design of the outer sheath can effectively disperse the pressure when the sheath enters and exits the cavity, reduce friction and damage, reduce the risk of iatrogenic urethral stricture, and improve urethral blood circulation during long-term surgery; 4. Improve the safety and success rate of surgery: The synergistic effect of the convex permeable part and the corrugated design of the outer sheath not only improves the cleaning effect, but also reduces the damage to the surgical channel, thereby improving the safety and success rate of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an electric resectoscope in an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the internal structure of an electric resectoscope in an embodiment of the present application.

[0030] Figure 3 It is an electric resectoscope in the embodiment of the present application Figure 2 Schematic diagram of the enlarged local A.

[0031] Figure 4 It is a schematic diagram of an outer sheath of an electrosurgical resectoscope in an embodiment of the present application.

[0032] Figure 5 It is an electric resectoscope in the embodiment of the present application. Figure 2 A magnified schematic diagram of local B.

[0033] Figure 6 It is a schematic diagram of the connection structure between the inner sheath body and the outer sheath body of an electrosurgical resectoscope in an embodiment of the present application.

[0034] Figure 7 It is an electric resectoscope in the embodiment of the present application. Figure 2 Schematic diagram of the enlarged cross section of the local C.

[0035] Figure 8 It is a schematic diagram of the cross-sectional structure of an electric resectoscope in an embodiment of the present application.

[0036] Description of the reference numerals: 1. inner sheath assembly; 11. inner sheath tube; 12. inner sheath body; 121. annular groove; 13. tube head; 14. second quick-release assembly; 141. connecting ring; 142. positioning pin; 143. bayonet; 2. outer sheath assembly; 21. outer sheath tube; 211. through hole; 212. convex belly; 213. corrugated; 22. outer sheath body; 23. first interface; 24. second interface; 25. first quick release assembly Disassembly assembly; 251, sliding sleeve; 252, return spring; 253, connecting seat; 254, limiting hole; 255, limiting ball; 3, operating assembly; 31, first grip; 32, second grip; 33, third quick release assembly; 331, fixed seat; 332, rotating ring; 333, guide pin; 334, guide groove; 34, electrode mounting seat; 35, spring frame; 36, connecting part; 361, slot. DETAILED DESCRIPTION

[0037] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0038] See also Figure 1-8. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0039] The following is combined with Figure 1-8 This application is described in further detail.

[0040] This embodiment discloses a resectoscope.

[0041] Reference Figure 1 and Figure 2 A resectoscope comprises an inner sheath assembly 1, an outer sheath assembly 2 and an operating assembly 3, wherein the inner sheath assembly 1 comprises an inner sheath body 12, the inner sheath body 12 is conical and one end of which is connected to an inner sheath tube 11, the outer sheath assembly 2 comprises an outer sheath body 22, one end of the outer sheath body 22 is connected to an outer sheath tube 21, the upper and lower sides of the outer sheath body 22 are respectively connected to a first interface 23 and a second interface 24, the outer sheath body 22 and the outer sheath tube 21 are sleeved on the outer side of the inner sheath body 12 and the inner sheath tube 11, the first interface 23 is connected to the inner sheath tube 11, the second interface 24 is connected to the outer sheath tube 21, and the outer sheath The main body 22 is connected to the inner sheath body 12 through a first quick-release assembly 25, and the operating assembly 3 includes a first handle 31 and a second handle 32. The upper end of the first handle 31 is connected to a fixing seat 331, and the first handle 31 and the second handle 32 are connected through a connecting tube. The fixing seat 331 is connected to the inner sheath body 12 through a second quick-release assembly 14. A third quick-release assembly 33 for connecting other equipment is provided at the upper end of the second handle 32, and an electrode mounting seat 34 is provided in the middle of the connecting tube. The electrode mounting seat 34 is connected to the second handle 32 through a spring frame 35.

[0042] Reference Figure 3 and Figure 4 The outer sheath tube 21 protrudes outward from the side of one end of the outer sheath body 22 to form a convex belly 212, and a plurality of through holes 211 are evenly opened on the convex belly 212 and the end surface of the outer sheath tube 21. The end of the inner sheath tube 11 is connected to a tube head 13 extending to the outside of the outer sheath tube 21. A plurality of corrugations 213 are evenly spaced along the circumferential direction on the outer sheath tube 21, and the corrugations 213 extend along the axial direction of the outer sheath tube 21.

[0043] Reference Figure 5 and Figure 6 The first quick-release assembly 25 includes a connecting seat 253 connected to the outer sheath body 22, a sliding sleeve 251 is axially slidably sleeved on the outer side of the connecting seat 253, a return spring 252 is arranged between the sliding sleeve 251 and the connecting seat 253, at least three limiting holes 254 are opened on the connecting seat 253, and limiting balls 255 are arranged inside the limiting holes 254, and an annular groove 121 is arranged on the outer surface of the inner sheath body 12 corresponding to the limiting balls 255; The second quick-release assembly 14 includes a conical connecting portion 36 connected to the first handle 31, a connecting ring 141 is sleeved on the end of the inner sheath body 12, and symmetrically arranged bayonet pins 143 are arranged on both sides of the inner wall of the connecting ring 141, the connecting portion 36 is inserted into the connecting ring 141, and L-shaped slots 361 are arranged on both sides of the connecting portion 36 corresponding to the bayonet pins 143, and a positioning pin 142 for limiting the connecting ring 141 is arranged above the connecting ring 141.

[0044] Reference Figure 7 and Figure 8 The third quick-release assembly 33 includes a fixed seat 331 connected to the connecting pipe, a rotating ring 332 is rotatably sleeved on the outer side of the fixed seat 331, a guide pin 333 is fixedly connected to the rotating ring 332, a spiral guide groove 334 is opened on the surface of the fixed seat 331, the guide pin 333 passes through the rotating ring 332 and extends to the inside of the guide groove 334, and a block with an elliptical groove in the middle is arranged inside the end of the rotating ring 332.

[0045] The working principle of an electric resectoscope is as follows: a first interface 23 is connected to a water inlet pipe, and a second interface 24 is connected to a drain pipe. During surgery, the portion of the end of the outer sheath tube 21 with a through hole 211 is inserted into the surgical site, and physiological saline is injected into the surgical site through the first interface 23 to clean the surgical site. Since the surgical site has a certain pressure, the physiological saline enters the gap between the outer sheath tube 21 and the inner sheath tube 11 through the through hole 211 under the action of the pressure, and is then discharged through the second interface 24. The convex belly 212 arranged at the end of the outer sheath tube 21 increases the gap between the outer sheath tube 21 and the inner sheath tube 11, so that more physiological saline can enter the gap between the outer sheath tube 21 and the inner sheath tube 11 and then be discharged, thereby improving the drainage efficiency. At the same time, when the surgical site can accommodate a small distance for the insertion of the outer sheath tube 21, the arrangement of the convex belly 212 not only ensures that the physiological saline can be discharged, but also increases the area of ​​the through hole 211, thereby improving the discharge efficiency.

[0046] In summary, the design of the convex belly-shaped water-permeable part in the present application increases the gap between the inner sheath and the outer sheath, and the coverage of the convex belly-shaped water-permeable part is wider, which increases the circulation rate of the water flow and strengthens the water return effect, thereby significantly improving the cleaning effect and reducing the risk of infection; at the same time, the design of the convex belly-shaped water-permeable part increases the return area, so that the water can still be drained normally at ultra-short distances such as the cervical opening, expanding the scope of application of the electrosurgical resectoscope and realizing the protection of the cavity; the corrugated design of the outer sheath can effectively disperse the pressure when the sheath enters and exits the cavity, reduces friction and damage, reduces the risk of iatrogenic urethral stenosis, and improves the blood circulation of the urethra during long-term surgery; the synergistic effect of the convex belly-shaped water-permeable part and the corrugated design of the outer sheath not only improves the cleaning effect, but also reduces the damage to the surgical channel, and improves the safety and success rate of the operation. Therefore, the present application effectively overcomes the various shortcomings in the prior art and has a high industrial utilization value.

[0047] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application shall still be included in the protection scope of the present application.

Claims

1. An electroresectoscope, comprising an inner sheath assembly (1), an outer sheath assembly (2) and an operating assembly (3), wherein the inner sheath assembly (1) comprises an inner sheath body (12), one end of which is connected to an inner sheath tube (11), and the outer sheath assembly (2) comprises an outer sheath body (22), one end of which is connected to an outer sheath tube (21), the outer sheath body (22) and the outer sheath tube (21) being sleeved on the outer sides of the inner sheath body (12) and the inner sheath tube (11), characterized in that: The outer sheath tube (21) protrudes outwardly from one end of the outer sheath body (22) to form a convex belly (212), and a plurality of through holes (211) are evenly formed on the convex belly (212) and the end surface of the outer sheath tube (21), and the end of the inner sheath tube (11) is connected to a tube head (13) extending to the outside of the outer sheath tube (21).

2. The resectoscope according to claim 1, characterized in that: A plurality of corrugations (213) are evenly spaced along the circumferential direction on the outer sheath tube (21), and the corrugations (213) extend along the axial direction of the outer sheath tube (21).

3. The resectoscope according to claim 1, characterized in that: The outer sheath body (1) is provided with a first interface (23) and a second interface (24) at the upper and lower sides respectively; the first interface (23) is connected to the inner sheath body (12) and the inner sheath tube (11); and the second interface (24) is connected to the outer sheath tube (21).

4. The resectoscope according to claim 1, characterized in that: The inner sheath body (12) and the outer sheath body (22) are connected via a first quick-release assembly (25).

5. The resectoscope according to claim 4, characterized in that: The first quick-release assembly (25) comprises a connecting seat (253) connected to the outer sheath body (22); a sliding sleeve (251) is provided on the outer side of the connecting seat (253) along an axial sliding sleeve; a return spring (252) is provided between the sliding sleeve (251) and the connecting seat (253); at least three limiting holes (254) are provided on the connecting seat (253); limiting balls (255) are provided inside the limiting holes (254); and an annular groove (121) is provided on the outer surface of the inner sheath body (12) corresponding to the limiting balls (255).

6. The resectoscope according to claim 1, characterized in that: The operating assembly (3) further comprises a first grip (31) and a second grip (32), wherein the first grip (31) and the second grip (32) are connected via a connecting tube, and the first grip (31) and the inner sheath body (12) are connected via a second quick-release assembly (14).

7. The resectoscope according to claim 6, characterized in that: The second quick-release assembly (14) comprises a conical connecting portion (36) connected to the first handle (31); a connecting ring (141) is sleeved on the end of the inner sheath body (12); bayonet pins (143) are symmetrically arranged on both sides of the inner wall of the connecting ring (141); the connecting portion (36) is inserted into the connecting ring (141), and L-shaped slots (361) are arranged on both sides of the connecting portion (36) corresponding to the bayonet pins (143).

8. The resectoscope according to claim 7, characterized in that: A positioning pin (142) for limiting the position of the connecting ring (141) is provided above the connecting ring (141).

9. The resectoscope according to claim 6, characterized in that: An electrode mounting seat (34) is provided in the middle of a connecting tube connecting the first handle (31) and the second handle (32); the electrode mounting seat (34) and the second handle (32) are connected via a spring frame (35).

10. The resectoscope according to claim 6, characterized in that: A third quick-release assembly (33) is provided at one end of the second handle (32), and the third quick-release assembly (33) comprises a fixed seat (331) connected to the connecting tube, a rotating sleeve (332) is rotatably sleeved on the outer side of the fixed seat (331), a guide pin (333) is fixedly connected to the rotating sleeve (332), a spiral guide groove (334) is provided on the surface of the fixed seat (331), the guide pin (333) passes through the rotating sleeve (332) and extends into the guide groove (334), and a block with an elliptical groove in the middle is provided inside the end of the rotating sleeve (332).

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