Bladder tumor resectoscope

Abstract

The invention belongs to the technical field of resectoscopes, and particularly relates to a bladder tumor resectoscope which comprises an endoscope and an operation assembly, the endoscope is connected with the operation assembly, the operation assembly comprises a sleeve, the sleeve is connected with a first connecting block, the first connecting block is connected with a second connecting block, and the second connecting block is connected with a third connecting block. The second connecting block is connected with the operator body, the pushing finger ring is installed at the bottom of the operator body, the electric knife can be installed below the endoscope through the limiting sleeve installed below the endoscope, the endoscope and the electric knife are directly installed in the inner sheath, compared with the prior art, the outer sheath part is removed, and the operation is convenient. The size of the resectoscope is reduced, surgical wounds are reduced, the guide pipe installed on the inner sheath can bear the flexible object taking clamping jaw, the tumor living body subjected to electric resection can be taken out of the body through the flexible object taking clamping jaw, human tissue can be clamped through the flexible object taking clamping jaw, and therefore the cutting accuracy of the electric resectoscope can be improved.

Description

Technical Field

[0001] This invention relates to the field of electroresection technology, specifically to an electroresection endoscope for bladder tumors. Background Technology

[0002] The electroresection endoscope (ERI) is a minimally invasive surgical instrument consisting of a rigid optical endoscope, a sheath, an electroresection ring, and a control system. It is primarily used for transurethral resection of bladder tumors and treatment of benign prostatic hyperplasia (BPH). Its core function is to simultaneously perform tissue cutting and coagulation using high-frequency current, and it is equipped with a cold light source system and a real-time image transmission device. As of 2025, the instrument has evolved into both monopolar and bipolar types, each using different distension fluid media to meet diverse clinical needs. In the field of urology, the ERI has become the gold standard for treating benign prostatic hyperplasia due to its advantages such as no external trauma, short operation time (average completion within 1 hour), and the ability to remove the catheter 3-4 days post-surgery.

[0003] An existing application (CN202411958864.4) describes an electrosurgical resectoscope. This resectoscope includes an inner sheath assembly, an outer sheath assembly, and an operating assembly. The outer sheath tube protrudes outward from the side furthest from the outer sheath body, forming a bulge, and has several evenly spaced through holes. The end of the inner sheath tube is connected to a tube head extending to the outside of the outer sheath tube. Furthermore, the outer sheath tube has corrugations, and the upper and lower sides of the outer sheath body have a first interface and a second interface, respectively. The inner and outer sheath bodies are connected by a first quick-release assembly. The operating assembly includes a first handle and a second handle, and is quickly assembled and disassembled using a second and a third quick-release assembly. This application achieves the effects of improving surgical flexibility, reducing tissue damage, and simplifying instrument cleaning and maintenance. However, the aforementioned electrosurgical resectoscope requires the electrosurgical blade to be fixed below the endoscope and connected to the operating device before being installed into the inner sheath. This structure suffers from inconvenient assembly and affects surgical efficiency. In addition, the manipulator controls the movement of both the endoscope and the electrosurgical blade simultaneously, which significantly interferes with the surgical procedure. To address these issues, a bladder tumor electrosurgical resection endoscope is needed. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the current electrosurgical resection instrument, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a bladder tumor electrosurgical resection endoscope. An electrosurgical blade can be installed below the endoscope via a limiting sheath, and the endoscope and electrosurgical blade are directly installed in the inner sheath. Compared to existing technologies, removing the outer sheath reduces the size of the electrosurgical resection endoscope, thereby reducing surgical trauma. A guide tube installed on the inner sheath can carry a flexible retrieval gripper, which can be used to remove the electrosurgically resected tumor live from the body. Furthermore, the flexible retrieval gripper can hold human tissue, thus improving the precision of the electrosurgical blade cutting.

[0007] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A bladder tumor electroresection endoscope includes an endoscope and an operating assembly; An operating component is connected to the endoscope. The operating component includes a cannula, a first connecting block connected to the cannula, a second connecting block connected to the first connecting block, and the second connecting block connected to the operator body. A push ring is installed at the bottom of the operator body. A fixing platform is provided on the side of the operator body away from the cannula. A fixing ring is installed at the bottom of the fixing platform. An inner sheath is installed on the fixing platform. A limiting sleeve is installed at the lower part between the inner sheath and the endoscope. An electric cutting knife is slidably connected inside the limiting sleeve. One end of the electric cutting knife is connected to the operator body. A guide tube is installed at the upper part between the inner sheath and the endoscope. A flexible retrieval gripper is installed inside the guide tube.

[0008] As a preferred embodiment of the bladder tumor electroresection endoscope of the present invention, the endoscope includes a guide wire and a lens, and a limiting groove is provided at the contact position between the endoscope and the cannula.

[0009] In a preferred embodiment of the bladder tumor electroresection endoscope described in this invention, a limiter is provided at the position where the cannula contacts the endoscope, and the limiter is engaged with a limiting groove.

[0010] In a preferred embodiment of the bladder tumor electroresection endoscope of the present invention, the cannula is rotatably connected to the first connecting block, the first connecting block is rotatably connected to the second connecting block, and the second connecting block is rotatably connected to the manipulator body.

[0011] In a preferred embodiment of the bladder tumor electroresection endoscope of the present invention, the endoscope passes through the manipulator body and the fixing stage, the manipulator body is slidably connected to the endoscope, and the fixing stage is fixedly connected to the endoscope.

[0012] In a preferred embodiment of the bladder tumor electroresection endoscope described in this invention, the limiting sleeve is fixedly connected to the endoscope, and the guide tube is fixedly connected to the inner sheath and extends to the outside of the inner sheath.

[0013] As a preferred embodiment of the bladder tumor electroresection endoscope of the present invention, the flexible retrieval gripper includes a flexible outer tube, a flexible inner tube is disposed inside the flexible outer tube, a gripper is disposed at the front end of the flexible inner tube, and an operating handle is disposed at the rear end of the flexible inner tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the electrosurgical knife can be installed below the endoscope through the limiting sleeve installed below the endoscope, and the endoscope and electrosurgical knife are directly installed in the inner sheath. Compared with the prior art, the outer sheath is removed, thereby reducing the size of the electrosurgical knife and thus reducing surgical trauma. The guide tube installed on the inner sheath can carry the flexible retrieval claw, which can be used to remove the electrosurgically cut tumor from the body. The flexible retrieval claw can also hold human tissue, thereby helping to improve the accuracy of electrosurgical knife cutting. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the limiting sleeve of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the limiting electric cutter of the present invention.

[0016] In the diagram: 100 Endoscope, 110 Lead wire, 120 Lens, 200 Operating component, 210 Sleeve, 220 First connecting block, 230 Second connecting block, 240 Operating body, 250 Push ring, 260 Fixing platform, 270 Fixing ring, 300 Inner sheath, 310 Limiting sleeve, 320 Electric cutter, 330 Guide tube, 340 Flexible retrieval gripper. Detailed Implementation

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] This invention provides the following technical solution: a bladder tumor electrosurgical resection endoscope. During use, the electrosurgical knife can be installed below the endoscope through a limiting sleeve installed below the endoscope, and the endoscope and electrosurgical knife are directly installed in the inner sheath. Compared with the prior art, the outer sheath is removed, thereby reducing the size of the electrosurgical resection endoscope and thus reducing surgical trauma. A guide tube installed on the inner sheath can carry a flexible retrieval claw. The flexible retrieval claw can remove the electrosurgically resected tumor from the body, and the flexible retrieval claw can hold human tissue, thereby helping to improve the accuracy of the electrosurgical knife cutting. Figures 1-3 The diagram shown is a structural schematic of a first embodiment of a bladder tumor electroresection endoscope according to the present invention. Please refer to [link / reference]. Figures 1-3 The bladder tumor electroresection endoscope of this embodiment includes an endoscope 100 and an operation component 200 as its main body. An operating component 200 is connected to the endoscope 100. The operating component 200 includes a cannula 210, a first connecting block 220 connected to the cannula 210, a second connecting block 230 connected to the first connecting block 220, and the second connecting block 230 connected to the operator body 240. A push ring 250 is installed at the bottom of the operator body 240. A fixed platform 260 is provided on the side of the operator body 240 away from the cannula 210. A fixed ring 270 is installed at the bottom of the fixed platform 260. An inner sheath 300 is installed on the fixed platform 260. A limiting cannula 310 is installed at the lower part between the inner sheath 300 and the endoscope 100. An electric cutting knife 320 is slidably connected inside the limiting cannula 310. One end of the electric cutting knife 320 is connected to the operator body 240. A guide tube 330 is installed at the upper part between the inner sheath 300 and the endoscope 100. A flexible retrieval gripper 340 is installed inside the guide tube 330.

[0022] The endoscope 100 includes a guide wire 110 and a lens 120. A limiting groove is provided at the contact point between the endoscope 100 and the cannula 210. A limiting device is provided at the contact point between the cannula 210 and the endoscope 100, and the limiting device engages with the limiting groove. The cannula 210 is rotatably connected to the first connecting block 220, the first connecting block 220 is rotatably connected to the second connecting block 230, and the second connecting block 230 is rotatably connected to the operator body 240. The endoscope 100 passes through the operator. The main body 240 and the fixed stage 260 are slidably connected to the endoscope 100, the fixed stage 260 is fixedly connected to the endoscope 100, the limiting sleeve 310 is fixedly connected to the endoscope 100, the guide tube 330 is fixedly connected to the inner sheath 300 and extends to the outside of the inner sheath 300, and the flexible retrieval gripper 340 includes a flexible outer tube, a flexible inner tube is provided inside the flexible outer tube, a gripper is provided at the front end of the flexible inner tube, and an operating handle is provided at the rear end; Endoscope 100 is used in conjunction with electrosurgical cutter 320 to cut tumors in patients. Wire 110 is used to connect electrosurgical cutter 320 and power supply. Lens 120 is used to connect to display device to capture images of the internal environment. Operating component 200 is used to drive electrosurgical cutter 320 to move. Sleeve 210 is used to support the rotation of first connecting block 220. First connecting block 220 is used to support the rotation of second connecting block 230. Second rotating block is used to connect to operator body 240 and is rotatably connected to operator body 240. Push ring 250 is connected to operator body 240 through connecting frame. Push ring 250 is used in conjunction with fixed ring 270 to drive operator body 240 to move. Fixed platform 260 is used to support fixed ring 270. Fixed ring 270 facilitates driving push ring 250 to move. The inner sheath 300 is used to support the limiting sleeve 310, the limiting sleeve 310 is used to support the electrosurgical cutter 320, the electrosurgical cutter 320 is used to cut tumor tissue after being energized, the guide tube 330 is used to support the flexible retrieval gripper 340, the flexible retrieval gripper 340 is used to grasp the cut tumor tissue, and to hold and pull the tumor tissue, thereby facilitating precise cutting of the tumor tissue; The electrosurgical blade 320 can be installed below the endoscope 100 via the limiting sleeve 310, and the endoscope 100 and electrosurgical blade 320 can be directly installed in the inner sheath 300. Compared with the prior art, the outer sheath is removed, thereby reducing the size of the electrosurgical blade and thus reducing surgical trauma. The guide tube 330 installed on the inner sheath 300 can carry the flexible retrieval claw 340. The flexible retrieval claw 340 can be used to remove the electrosurgically cut tumor from the body, and can also hold human tissue, thereby helping to improve the cutting accuracy of the electrosurgical blade 320.

[0023] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bladder tumor electroresection endoscope, characterized in that: Includes an endoscope (100) and an operating assembly (200); An operating component (200) is connected to the endoscope (100). The operating component (200) includes a cannula (210), a first connecting block (220) is connected to the cannula (210), a second connecting block (230) is connected to the first connecting block (220), and the second connecting block (230) is connected to the operator body (240). A push ring (250) is installed at the bottom of the operator body (240), and a fixing platform (260) is provided on the side of the operator body (240) away from the cannula (210). (260) A fixing ring (270) is installed at the bottom. An inner sheath (300) is installed on the fixing platform (260). A limiting sleeve (310) is installed at the lower part between the inner sheath (300) and the endoscope (100). An electric cutting knife (320) is slidably connected inside the limiting sleeve (310). One end of the electric cutting knife (320) is connected to the operator body (240). A guide tube (330) is installed at the upper part between the inner sheath (300) and the endoscope (100). A flexible retrieval gripper (340) is installed inside the guide tube (330).

2. The bladder tumor electroresection endoscope according to claim 1, characterized in that: The endoscope (100) includes a wire (110) and a lens (120), and a limiting groove is provided at the contact position between the endoscope (100) and the sleeve (210).

3. The bladder tumor electroresection endoscope according to claim 1, characterized in that: A limiter is provided at the position where the sleeve (210) contacts the endoscope (100), and the limiter is engaged with the limiting groove.

4. The bladder tumor electroresection endoscope according to claim 1, characterized in that: The sleeve (210) is rotatably connected to the first connecting block (220), the first connecting block (220) is rotatably connected to the second connecting block (230), and the second connecting block (230) is rotatably connected to the operator body (240).

5. The bladder tumor electroresection endoscope according to claim 1, characterized in that: The endoscope (100) passes through the manipulator body (240) and the fixed stage (260), the manipulator body (240) is slidably connected to the endoscope (100), and the fixed stage (260) is fixedly connected to the endoscope (100).

6. The bladder tumor electroresection endoscope according to claim 1, characterized in that: The limiting sleeve (310) is fixedly connected to the endoscope (100), and the guide tube (330) is fixedly connected to the inner sheath (300) and extends to the outside of the inner sheath (300).

7. The bladder tumor electroresection endoscope according to claim 1, characterized in that: The flexible object-grabbing gripper (340) includes a flexible outer tube, a flexible inner tube inside the flexible outer tube, a gripper at the front end of the flexible inner tube, and an operating handle at the rear end.

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