Active bending sheath-type urological flexible endoscope and Anti-clogging type urological rigid endoscope

Abstract

Disclosed is an active bending sheath-type urological flexible endoscope (1), comprising an active bending sheath (20), wherein the active bending sheath (20) comprises a bendable sheath main body (21) and a control handle (22) connected to the rear end of the bendable sheath main body (21) and is provided with a connecting channel (24); and a flexible endoscope main body (30), wherein the flexible endoscope main body (30) comprises a flexible endoscope inner core (31) and a flexible endoscope handle (32) connected to the rear end of the flexible endoscope inner core (31). The flexible endoscope inner core (31) is suitable for being inserted into the connecting channel (24). The active bending sheath (20) is sleeved on the outside of the flexible endoscope main body (30), the bendable sheath main body (21) is sleeved on the flexible endoscope inner core (31), and the control handle (22) is sleeved on the flexible endoscope handle (32). The bendable sheath main body (21) is suitable for bending to drive the flexible endoscope inner core (31) to bend.

Description

Active bending sheath type urinary soft mirror and anti-blocking urinary hard mirror TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an active bending sheath type urinary soft mirror and an anti-blocking urinary hard mirror. BACKGROUND

[0002] Urinary calculi is a common disease of the urinary system, with a global incidence of 1-20%, and an annual incidence of 150-200 / 100,000 people, of which 25% require hospitalization, of which urinary calculi are the most common.

[0003] In traditional treatment methods, ureteral soft mirror technology has gradually become the main method for treating upper urinary calculi, and due to the flexibility of the mirror, it can be inserted directly into the renal pelvis and calyx through the urethra, with the advantages of less trauma, fewer complications, shorter hospital stay, etc.

[0004] However, the traditional ureteral soft mirror has some shortcomings, the traditional ureteral soft mirror has low efficiency in lithotripsy during operation, and the stones need to be taken out one by one by the stone basket, and most of the stones need to be discharged by the patient, so the effect of stone discharge is not accurate. And the price of traditional ureteral soft mirror equipment and the price of possession are very expensive, which affects the popularization and use of ureteral soft mirror.

[0005] Ureteroscope is one of the most commonly used endoscopes in urology, which can be divided into two categories according to its own characteristics: rigid ureteroscope and soft ureteroscope, of which rigid ureteroscope can be divided into rigid ureteroscope and semi-rigid ureteroscope. The early ureteral hard mirror has a metal shell with a true space columnar lens arranged inside, and the mirror body is very rigid, and slight bending can easily cause the internal columnar lens to break, affecting the display effect. The current ureteral hard mirror uses optical fibers instead of columnar lenses, so that the stainless steel mirror body can have a certain elasticity, which is convenient for operation and not easy to damage, which is called semi-rigid ureteral hard mirror. Because the traditional ureteral hard mirror is thick and easy to damage, it has basically withdrawn from the market, and now "ureteral hard mirror" usually refers to semi-rigid ureteral hard mirror. In order to adapt to different diagnosis and treatment purposes, the length, diameter, structure and application of ureteral hard mirror are also characteristic.

[0006] The traditional ureteral hard mirror has many problems in the operation process as follows:

[0007] The traditional ureteral hard mirror has no hydrophilic coating on the surface, and the structure of the hard mirror is thin in front and thick at the back, while the structure of the ureter is thick at the top and thin at the bottom. In the process of inserting the ureteral hard mirror into the patient's ureter in reverse, the rear end of the ureteral hard mirror is easy to cause the ureter to break and tear, and the kidney needs to be removed.

[0008] The traditional ureteral hard mirror only has one working channel for perfusion liquid and stone crushing tool. In the process of stone crushing, the perfusion liquid is directly injected into the kidney through the ureter, and if the pressure in the kidney increases, the perfusion liquid can return through the gap between the ureteroscope and the ureter, and if the ureter is thin and there is no gap between the ureteroscope and the ureter, the perfusion liquid is completely injected into the kidney, returned into the blood through the kidney tubule and lymphatic vessel, and can cause water poisoning, and if there are bacteria in the urine, it is easy to cause bacteremia and septic shock, endangering life. Rapid pressure increase can even cause kidney rupture and bleeding. Because the liquid return speed is slow during the ureteral hard mirror stone crushing, the stone crushing powder accumulates to affect the operation field, and the stone crushing efficiency is low. At the same time, because the perfusion liquid flow per unit time is small, the heat of the laser stone crushing is easy to accumulate, the local water temperature increases to 650-80 degrees Celsius, and the "boiled ureter" is formed, causing long-term ureteral stenosis, which is extremely difficult to treat.

[0009] The traditional ureteral hard mirror cannot push away the polyp for crushing the stone, and the ureter is easy to be directly damaged in the process of hitting the polyp, causing ureteral perforation and stenosis.

[0010] SUMMARY

[0011] An advantage of the present application is that it provides an active bending sheath type urinary soft mirror, which can discharge the stones through an attraction channel after crushing the stones, and increase the stone discharge space of the attraction channel without affecting the stone crushing function, which is beneficial to the discharge of the stones.

[0012] Another advantage of the present application is that it provides an active bending sheath type urinary soft mirror, the active bending sheath of which can be actively bent, and the bending direction and angle can be adjusted, the active bending sheath drives the soft mirror body to bend, so that the stones in the dead angle can be found under the visual condition, and the stone crushing effect is better.

[0013] Another advantage of the present application is that it provides an active bending sheath type urinary soft mirror, the active bending sheath and the soft mirror body of which can be mutually rotated and fixed to control the length of the soft mirror body extending from the front end of the active bending sheath, and the mirror insertion and stone crushing operation is better.

[0014] Another advantage of the present application is that it provides an active bending sheath type urinary soft mirror, a guide sheath of which can be placed in the active bending sheath, the guide sheath includes a wedge-shaped head end and has a certain hardness, and is suitable for supporting the soft active bending sheath to enter the predetermined lesion.

[0015] Another advantage of the present application is to provide a self-bending sheath type urinary flexible scope, which can extract the scope body from the connecting channel of the self-bending sheath when blockage occurs, use the entire connecting channel for stone removal, and solve the blockage problem.

[0016] Another advantage of the present application is to provide a self-bending sheath type urinary flexible scope, which uses the scope body to inject liquid, uses the gap between the self-bending sheath and the scope body to discharge liquid and stones, and ensures low pressure in the renal pelvis while sucking out the stones.

[0017] According to another aspect of the present application, the present application further provides a self-bending sheath type urinary flexible scope, which comprises:

[0018] a self-bending sheath comprising a sheath body, a control handle connected to the rear end of the bendable sheath body, and an attracting channel and a connecting channel; and

[0019] a scope body comprising a scope inner core and a scope handle connected to the rear end of the scope inner core, the scope inner core being adapted to be placed in the connecting channel, the outer wall of the scope inner core and the inner wall of the bendable sheath body forming the attracting channel, and the bendable sheath body being adapted to bend to drive the scope inner core to bend.

[0020] The bendable sheath body, the self-bending sheath, the self-bending sheath type urinary flexible scope, and the self-bending sheath will be fully understood through the following description and drawings.

[0021] An advantage of the present application is to provide a blockage prevention type urinary rigid scope, which can achieve the joint operation of irrigation and stone removal during the stone crushing process, and ensure the reflux of the flushing liquid during the stone crushing process.

[0022] Another advantage of the present application is to provide a blockage prevention type urinary rigid scope, which is provided with a hydrophilic coating on the surface, which ensures smooth entry when the blockage prevention type urinary rigid scope is inserted into the ureter of a patient, and avoids the phenomenon of ureteral injury caused by the holding of the scope.

[0023] Another advantage of the present application is to provide a blockage prevention type urinary rigid scope, which achieves efficient discharge of the treated stones through a two-piece structure.

[0024] Another advantage of the present application is to provide a blockage prevention type urinary rigid scope, which can be operated and controlled by two pieces to facilitate the treatment of ureteral stones combined with polyps.

[0025] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0026] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0027] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0028] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0029] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0030] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0031] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0032] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0033] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0034] Another advantage of the present application is to provide an anti-blocking type of ureteroscope, which is made of two sets of materials with different properties, and the outer sheath is made of disposable material, thereby avoiding the inconvenience of cleaning the outer sheath and cross infection.

[0035] According to an aspect of the present application, there is provided an anti-blocking type ureteroscope, comprising: an outer sheath assembly providing rigidity support; an inner core assembly comprising a scope, a visual unit, an illumination unit and an irrigation unit, the scope being adapted to be mounted inside the outer sheath assembly, the visual unit, the illumination unit and the irrigation unit being mounted on a front end face of the scope, the visual unit being adapted to acquire a front end visual field, the illumination unit providing illumination, and the irrigation unit providing irrigation suction; and a discharge channel being provided between the outer sheath assembly and the inner core assembly to provide a stone discharge path, the size of the discharge channel being changed by changing the positional relationship between the inner core assembly and the outer sheath assembly. BRIEF DESCRIPTION OF DRAWINGS

[0036] FIG. 1 is a schematic diagram of the overall structure of an active bending sheath type ureteroscope according to a first preferred embodiment of the present application.

[0037] FIG. 2 is an exploded schematic diagram of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0038] FIG. 3 is a partial cross-sectional view of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0039] FIG. 4 is a schematic diagram of the end portion of an active bending sheath and a soft scope body of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0040] FIG. 5 is a process diagram of the use of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0041] FIG. 6 is a process diagram of the use of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0042] FIG. 7 is a process diagram of the use of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0043] FIG. 8 is a process diagram of the use of an active bending sheath type ureteroscope according to the first preferred embodiment of the present application.

[0044] FIG. 9 is a partial enlarged view of an active bending sheath type ureteroscope according to a second preferred embodiment of the present application.

[0045] FIG. 10 is a partial enlarged view of an active bending sheath type ureteroscope according to a third preferred embodiment of the present application.

[0046] FIG. 11 is a schematic diagram of the overall structure of an anti-blocking type ureteroscope according to a preferred embodiment of the present application.

[0047] Fig. 12 is an overall exploded schematic view of the anti-blocking type of urethral endoscope according to the preferred embodiment of the present application.

[0048] Fig. 13 is a schematic view of the transition from the mounted state to the stone expelling state of the anti-blocking type of urethral endoscope according to the preferred embodiment of the present application.

[0049] Fig. 14 is a schematic view of the application scenario of the surgical procedure of the anti-blocking type of urethral endoscope according to the preferred embodiment of the present application.

[0050] Fig. 15 is a schematic view of the stone expelling procedure of the anti-blocking type of urethral endoscope according to the preferred embodiment of the present application.

[0051] Fig. 16 is a schematic view of the negative pressure suction procedure of the anti-blocking type of urethral endoscope according to the preferred embodiment of the present application.

[0052] Fig. 17 is a partial schematic view of an anti-blocking type of urethral endoscope according to a second preferred embodiment of the present application.

[0053] Fig. 18 is a schematic view of the end face of the anti-blocking type of urethral endoscope according to the preferred embodiment of the present application.

[0054] Fig. 19 is a partial sectional view of an anti-blocking type of urethral endoscope according to a third preferred embodiment of the present application. DETAILED DESCRIPTION

[0055] The following description is presented to enable any person skilled in the art to practice the present application as claimed. The preferred embodiments disclosed herein are merely examples of the present application and variations and modifications can be used as will occur to those skilled in the art. The present application as defined by the claims should overcome the problems of the prior art, and the embodiments defined below represent preferred implementations of the present application. The preferred embodiments defined below can be further modified than the other embodiments, and such modifications are intended to be within the concept of the present application. Those skilled in the art will readily recognize from the disclosure herein the various ways in which the principles of the present application can be employed. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It will be understood that the terms "a" or "an", as used herein, mean "at least one" or "one or more", unless the context clearly indicates otherwise. As used herein, the term "another" means at least one, and this definition can apply to other terms similarly defined herein such as "at least one", "one or more", and / or "additional".

[0056] Embodiment One:

[0057] Referring to FIG. 1 to FIG. 8, a self-bending sheath type urinary flexible scope according to a preferred embodiment of the present application is shown. The self-bending sheath type urinary flexible scope 1 is applied in the surgical procedure of urinary stone treatment. Specifically, the self-bending sheath type urinary flexible scope 1 is suitable for entering the ureter through the natural channel of the human body to treat the stone, and the broken stone can be discharged out of the body through the self-bending sheath type urinary flexible scope 1 after the stone is broken.

[0058] In the present embodiment, the self-bending sheath type urinary flexible scope 1 comprises a guide sheath 10, a self-bending sheath 20 and a flexible scope body 30. The guide sheath 10 can be inserted into the self-bending sheath 20. The head end of the guide sheath 10 is wedge-shaped and has a certain hardness, which is suitable for supporting the flexible self-bending sheath 20 to enter the predetermined lesion. The flexible scope body 30 is suitable for being inserted into the self-bending sheath 20. The self-bending sheath 20 can be actively bent, and the bending direction and angle can be adjusted. The self-bending sheath 20 bends to drive the flexible scope body 30 to bend, so that the stone in the dead angle can be found under the visual condition, and the stone breaking effect is better.

[0059] For the convenience of description, the end of the self-bending sheath type urinary flexible scope 1 inserted into the ureter of the patient is regarded as the front end of the self-bending sheath type urinary flexible scope 1, and the end of the self-bending sheath type urinary flexible scope 1 left in the patient's body is regarded as the rear end of the self-bending sheath type urinary flexible scope 1.

[0060] FIG. 1 is a schematic diagram of the overall structure of a self-bending sheath type urinary flexible scope according to a first preferred embodiment of the present application. The self-bending sheath 20 comprises a bendable sheath body 21 and a control handle 22. The bendable sheath body 21 is connected to the front end of the control handle 22. The flexible scope body 30 comprises a flexible scope inner core 31 and a flexible scope handle 32. The flexible scope handle 32 is arranged at the rear end of the flexible scope inner core 31 for medical staff to hold. The size of the control handle 22 and the flexible scope handle 32 is matched with each other, so that the control handle 22 and the flexible scope handle 32 can be detachably connected with each other, thereby making the self-bending sheath 20 and the flexible scope body 30 detachably connected with each other, that is, the flexible scope body 30 is suitable for being inserted into the inside of the self-bending sheath 20.

[0061] FIG. 2 is an exploded schematic diagram of the self-bending sheath type urinary flexible scope 1 according to the first preferred embodiment of the present application. The self-bending sheath 20 is sleeved on the outside of the flexible scope body 30. The bendable sheath body 21 and the flexible scope inner core 31 are sleeved. The control handle 22 and the flexible scope handle 32 are sleeved. An attraction channel 23 is formed between the outer wall of the flexible scope inner core 31 and the inner wall of the bendable sheath body 21. The bendable sheath body is suitable for bending to drive the flexible scope inner core to bend.

[0062] When the soft scope body 30 is inserted into the active bending sheath 20, a gap between the active bending sheath 20 and the soft scope body 30 is defined as the suction channel 23. The suction channel 23 extends longitudinally inside the active bending sheath 20, and extends from the front end of the bendable sheath body 21 to the side of the control handle 22, so as to penetrate the bendable sheath body 21 and the control handle 22. The active bending sheath 20 further has a connection channel 24 extending from the front end of the bendable sheath body 21 to the end of the control handle 22, so as to penetrate the bendable sheath body 21 and the control handle 22. In addition, the front part of the suction channel 23 and the connection channel 24 is one channel. That is, the suction channel 23 is part of the connection channel 24, that is, part of the connection channel 24 is occupied by the soft scope body 30, and the occupied part of the connection channel 24 by the soft scope body 30 forms the suction channel 23.

[0063] FIG. 3 is a partial cross-sectional view of the active bending sheath urinary soft scope 1 according to the first preferred embodiment of the present application. The bendable sheath body 21 includes a bending unit 211 and a connection unit 212, the bending unit 211 is arranged at the front part of the connection unit 212, in other words, the two ends of the connection unit 212 are connected to the bending unit 211 and the control handle 22. The bending unit 211 is adapted to bend at a predetermined angle, which is easy to find the dead angle part of the stone under the visualization condition, solves the problem that the stone can be seen but cannot be crushed, so that the stone crushing effect of the active bending sheath urinary soft scope 1 is better.

[0064] In addition, in the present embodiment, the bending unit 211 is preferably arranged in a spiral structure or a snake bone structure, etc., so that the bending unit 211 can bend at different nodes, and the angle and direction of bending can be controlled by medical staff. Specifically, the inside of the bending unit 211 preferably adopts a spiral structure or a snake bone structure, and the outside of the bending unit 211 and the connection unit 212 are preferably made of materials with lubricity and smoothness, so as to reduce the friction between the bending unit 211 and the connection unit 212 and the patient, and reduce the damage of the active bending sheath urinary soft scope 1 to the patient's tissue.

[0065] The control handle 22 comprises a control part 221 and a bending handle 222, the control part 221 is connected to the rear end of the bendable sheath body 21, the bending handle 222 is arranged on the control part 221, and the bending handle 222 is suitable for controlling the bending of the bending unit 211. In other words, when the bending handle 222 pushes the bendable sheath body 21 from the control handle 22, the bending unit 211 is suitable for bending to the left, and when the bending handle 222 pushes the bendable sheath body 21 from the control handle 22, the bending unit 211 is suitable for bending to the right. The medical staff can change the distance of pushing the bending handle 222, thereby controlling the bending degree of the bending unit 222, so that the active bending sheath type urinary soft mirror 1 can see and crush the stones in the dead angle.

[0066] The control handle 22 further comprises a negative pressure adjusting port 223 and a suction port 224, the negative pressure adjusting port 223 is arranged on the surface of the control part 221, and the negative pressure adjusting port 223 is communicated with the suction channel 23 to control the suction force of the active bending sheath type urinary soft mirror 1. In this embodiment, the negative pressure adjusting port 224 is preferably arranged on the side of the control part 221, so that when the medical staff holds the control part 221, the fingers of the medical staff can cover the negative pressure adjusting port 223, without the need for the medical staff to rotate the hand to adjust, thereby increasing the convenience of the operation.

[0067] During the operation, the medical staff covers the negative pressure adjusting port 223 with the fingers, and changes the tightness between the fingers and the negative pressure adjusting port 223 to change the negative pressure of the suction channel 23, thereby adjusting the suction force of the drainage, stone removal or sewage removal, so as to better control the discharge of the stones.

[0068] The control handle 22 further comprises a sealing member 225, the sealing member 225 is arranged on the control part 221, and when the soft mirror body 30 is inserted into the connecting channel 24 of the active bending sheath 20, the sealing member 225 is suitable for sealing the connecting channel 24, so that the medical staff can better adjust the pressure in the suction channel 23 through the negative pressure adjusting port 223, and better control the discharge of the stones.

[0069] It is worth noting that the sealing member 225 is made of flexible material, such as rubber, etc. When the soft mirror body 30 is inserted into the active bending sheath 20, the sealing member 225 can always wrap the soft mirror body 30 when the soft mirror body 30 moves forward and backward relative to the position, so that the soft mirror body 30 and the active bending sheath 20 always maintain a sealed state, thereby facilitating the discharge of the stones.

[0070] More specifically, in the present embodiment, the sealing member 225 is arranged on the side wall of the connecting channel 24 and located behind the negative pressure adjusting port 223, that is, the axial position of the sealing member 225 is behind the negative pressure adjusting port 223, and when the soft mirror main body 30 is inserted into the connecting channel 24 of the active bending sheath 20, the sealing member 225 can be wrapped around the outside of the soft mirror main body 30 to seal the connecting channel 24, so as to avoid air leakage between the active bending sheath 20 and the soft mirror main body 30, which affects the discharge of the gravel.

[0071] In addition, in the present embodiment, the sealing member 225 has a through hole in the center, and the diameter of the through hole is smaller than the diameter of the sealing member 225 as a whole, that is, the soft mirror inner core 31 of the soft mirror main body 30 is adapted to be inserted into the through hole of the sealing member 225, and the sealing member 225 can always wrap the soft mirror main body 30, so as to facilitate the control of the medical staff on the discharge of gravel.

[0072] The soft mirror main body 30 further has a perfusion channel 33, an instrument channel 34 and a visual channel 35, which are arranged independently and longitudinally in the soft mirror main body 30. The perfusion channel 33 is a channel for the entry of perfusion liquid, which can keep the surgical field clear and the gravel can be flushed into the suction channel 23 by the perfusion liquid after being crushed. The instrument channel is a channel for the entry of external surgical instruments such as gravel laser, etc. More specifically, the perfusion channel 33, the instrument channel 24 and the visual channel 25 all extend from the front end of the soft mirror inner core 31 to the rear to penetrate the soft mirror inner core 31 and the soft mirror handle 32.

[0073] Among them, the front part of the perfusion channel 33 and the instrument channel 34 is the same channel, that is, in the present embodiment, the perfusion liquid and the surgical instruments enter the patient's body through the same channel. However, it is worth noting that the rear part of the perfusion channel 33 and the instrument channel 34 is two different channel ports, that is, the rear ports of the perfusion channel 33 and the instrument channel 34 are arranged at the end and the side of the soft mirror handle 32, respectively, and the front port of the perfusion channel 33 and the instrument channel 34 is one port, which is arranged at the front end face of the soft mirror inner core 31.

[0074] The soft mirror inner core 31 comprises an extension part 311 and a main core body 312, the extension part 311 is arranged at the front end of the main core body 312, after the soft mirror main body 30 is inserted into the connecting channel 24 of the active bending sheath 20, the extension part 311 is adapted to extend out of the connecting channel 24 when the active bending sheath type urinary soft mirror 1 is used to perform lithotripsy, and the main core body 312 is in the connecting channel 24. In this embodiment, the extension part 311 is arranged in a wedge-shaped tapered shape, and the main core body 312 is arranged in a cylindrical shape. That is, the thickness of the front end of the extension part 311 is smaller than the thickness of the rear end of the extension part 311, and the thickness of the front end is arranged to be the smallest, that is, the thickness of the extension part 311 gradually increases from the front end to the rear end.

[0075] The extension part 311 and the main core body 312 are both made of flexible material, and the bendable sheath body 21 of the active bending sheath 20 is adapted to drive the soft mirror inner core 31 to bend when bending, that is, the active bending sheath 20 actively bends to drive the soft mirror main body 30 to passively bend to better find and break stones.

[0076] The extension part 311 comprises an outer end face 3111, at least one visual unit 3112 and at least one illumination unit 3113, the visual unit 3112 and the illumination unit 3113 are arranged on the outer end face 3111, and the front port of the perfusion channel 33 and the instrument channel 34 is one port, based on this, the front port of the perfusion channel 33 and the instrument channel 34 is also arranged on the outer end face 3111.

[0077] In this embodiment, preferably, the number of visual units 3112 is arranged to be one, the number of illumination units 3113 is arranged to be two, and the illumination units 3113 are arranged on both sides of the visual unit 3112. Those skilled in the art should understand that the number of visual units 3112 and illumination units 3113 is not limited by the present application, as long as the surgical requirements are met. In addition, the power lines of the visual unit 3112 and the illumination unit 3113 can be connected outwardly through the visual channel 35 to meet the needs of the operation.

[0078] The soft mirror handle 32 has a perfusion port 321 and an instrument port 322, the perfusion port 321 extends inwardly from the surface of the soft mirror handle to communicate with the perfusion channel 33, and the instrument port 322 extends inwardly from the surface of the soft mirror handle to communicate with the instrument channel 34, the perfusion liquid is adapted to enter into the perfusion channel 33 from the perfusion port 321, and the external surgical instrument is adapted to enter into the instrument channel 34 through the instrument port 322.

[0079] The soft mirror inner core 31 further has at least one flow guide groove 313 arranged on the outer wall of the extension 311 and the main body 312. In other words, the flow guide groove 313 is recessed inwardly from the outer wall of the extension 311 and the main body 312 to increase the area for stone discharge and facilitate the discharge of the stone fragments. When the soft mirror body 30 is placed in the connection channel 24, the soft mirror inner core 31 occupies a part of the connection channel 24, and the part of the connection channel 24 not occupied by the soft mirror inner core 31 is the suction channel 23. The arrangement of the flow guide groove 313 makes the cross section of the soft mirror inner core 31 smaller, so that the space occupied by the soft mirror inner core 31 in the connection channel 24 is smaller, and thus the space of the suction channel 23 is larger, which is conducive to the discharge of the stone fragments.

[0080] In addition, in the present embodiment, the number of flow guide grooves 313 is preferably two, that is, the flow guide grooves 313 are arranged on both sides of the soft mirror inner core 31. The extension 311 of the soft mirror inner core 31 is arranged in a wedge-shaped tapered shape, so that the stone fragments are adapted to enter the suction channel 23 from the flow guide groove 313 and be discharged out of the patient's body.

[0081] In the present embodiment, the cross-sectional cut of the flow guide groove 313 is in a curved crescent shape to arrange the visual unit 3112, the illumination unit 3113, the irrigation channel 33 and the instrument channel 33 in the smallest possible area, that is, to maximize the volume of the flow guide groove 313, so that the volume occupied by the soft mirror inner core 31 in the connection channel 24 is reduced, and thus the volume of the suction channel 23 is increased, which is conducive to the discharge of the stone fragments and reduces the blockage.

[0082] It is worth noting that in other implementable ways, the flow guide groove 313 can also not be arranged, that is, the active bending sheath type urinary soft mirror 1 can be discharged through the suction channel 23 after the stone is crushed. Based on this, those skilled in the art should understand that whether the active bending sheath type urinary soft mirror 1 is provided with the flow guide groove 313 is not a limitation of the present application.

[0083] Figure 4 is a schematic view of the active bending sheath and the end of the soft scope body of the active bending sheath urinary soft scope 1 according to the first preferred embodiment of the present application. In addition, the active bending sheath 20 further comprises a first adjusting part 25, the soft scope body 30 further comprises a second adjusting part 36, the first adjusting part 25 is arranged on the control handle 22, and the second adjusting part 36 is arranged on the soft scope handle 32. When the soft scope body 30 is inserted into the connecting channel 24 of the active bending sheath 20, the control handle 22 and the soft scope handle 32 are adapted to be adjusted and fixed to each other through the first adjusting part 25 and the second adjusting part 36.

[0084] Specifically, in the present embodiment, the first adjusting part 25 and the second adjusting part 36 are adjusted and fixed by means of snap connection, that is, the first adjusting part 25 is arranged as a snap groove, the first adjusting part 25 is arranged on the inner wall of the control handle 22, that is, the inner wall where the connecting channel 24 is located, and the second adjusting part 36 is arranged as a snap buckle, the second adjusting part 36 is arranged on the outside of the soft scope handle 32. The second adjusting part 36 is adapted to be snap-connected from the first adjusting part 25 to control the length of the extension part 311 extending out of the connecting channel 24.

[0085] When the soft scope body 30 is inserted into the connecting channel 24, the second adjusting part 36 is adapted to be screwed from the first adjusting part 25. When the first adjusting part 25 and the second adjusting part 36 are screwed to the maximum extent, the extension part 311 extends out of the connecting channel 24 to the farthest distance. When the first adjusting part 25 and the second adjusting part 36 are screwed to the minimum extent, the soft scope body 30 is adapted to be withdrawn from the active bending sheath 20.

[0086] In addition, in the present embodiment, the first adjusting part 25 and the second adjusting part 36 are adjusted and fixed by means of snap connection. In other specific embodiments, the first adjusting part 25 and the second adjusting part 36 can also be adjusted and fixed by means of screwing or magnetic attraction, etc. to adjust the length of the soft scope inner core 31 extending out of the connecting channel 23, and further make the active bending sheath urinary soft scope 1 discharge the stones.

[0087] The guide sheath 10 comprises a wedge-shaped head end 11, a guide sheath body 12 and a guide wire channel 13, the wedge-shaped head end 11 is arranged at the front end of the guide sheath body 12, so as to pick up the tissue of the patient, so that the active bending sheath 20 can be placed in the predetermined lesion, reduce the damage to the patient's tissue. The guide wire channel 13 extends from the wedge-shaped head end 11 to the rear, so as to pass through the wedge-shaped head end 11 and the guide sheath body 12. A guide wire is suitable for being inserted into the guide wire channel 13.

[0088] Figs. 5 to 8 are process diagrams of the use of the active bending sheath type urological flexible scope according to the first preferred embodiment of the present application. The use method of the active bending sheath type urological flexible scope 1 is exemplarily introduced as follows. As shown in the figures, the use method of the active bending sheath type urological flexible scope 1 according to the embodiment of the present application is illustrated. The use method comprises: a: a guide sheath is inserted into an active bending sheath and reaches a predetermined lesion; b: the guide sheath is withdrawn from the active bending sheath, and a flexible scope body is inserted into the active bending sheath; c: the active bending sheath actively bends to drive the flexible scope body to bend and reach a stone; d: the flexible scope body performs perfusion and stone crushing, and the active bending sheath sucks the crushed stone.

[0089] In step a, a guide sheath is inserted into an active bending sheath and reaches a predetermined lesion. Specifically, the guide sheath 10 is inserted into the connecting channel 23 of the active bending sheath 20, the wedge-shaped head end 11 of the guide sheath 10 protrudes from the connecting channel 24, under the guidance of a guide wire, the tissue in the patient's body is picked up, and the predetermined lesion is entered. The wedge-shaped head end 11 can reduce the damage to the patient's tissue, and more easily make the active bending sheath 20 enter through the urethra, bladder and ureter to reach the renal pelvis for stone crushing and other operations.

[0090] In step b, the guide sheath is withdrawn from the active bending sheath, and a flexible scope body is inserted into the active bending sheath. Specifically, after reaching the predetermined lesion, the guide sheath 10 is withdrawn from the connecting channel 24 of the active bending sheath 20, and the flexible scope body 30 is placed in the connecting channel 24.

[0091] In step c, the active bending sheath actively bends to drive the flexible scope body to bend and reach a stone. Specifically, the bending unit 211 of the active bending sheath 20 is suitable for being controlled to bend through the bending handle 222, and the flexible scope body 30 is passively bent under the driving of the bending unit 211, so that the flexible scope body 30 can reach the stone. The flexible scope body 30 is provided with at least one viewing unit 3112 and at least one illumination unit 3113, so that the operation process is performed under the condition of being visible, greatly increasing the safety of the operation.

[0092] In step d, the soft scope body perfuses and lithotripsies, the active bending sheath sucks the crushed stones, specifically, the perfusion fluid and the surgical lithotripsy instrument enter through the perfusion channel 33 and the instrument channel 34, the lithotripsy operation is performed, the entry of the perfusion fluid makes the surgical field clear and the lithotripsy is carried out, and the crushed stones are discharged through the suction channel 23. The soft scope inner core 31 is provided with at least one flow guide groove 313, so that the volume of the soft scope inner core 31 occupying the connecting channel 24 is reduced, and the volume of the suction channel 23 is increased, which is beneficial to the discharge of the crushed stones and reduces the blockage.

[0093] When the blockage occurs, the soft scope body 30 is withdrawn backward, so that the entire connecting channel 24 is used for discharging the fluid and the stones, that is, the suction channel 23 is the connecting channel 24, which greatly increases the stone discharge volume of the suction channel 24.

[0094] As shown in FIG. 9, the second preferred embodiment of the present application provides an active bending sheath type urinary soft scope 1A. The active bending sheath type urinary soft scope 1A in the present preferred embodiment is a variant of the first preferred embodiment described above. Compared with the first preferred embodiment described above, in the present embodiment, the flow guide groove 313A is changed.

[0095] In the present embodiment, the guide sheath 10 and the active bending sheath 20 are similar to those in the above-mentioned embodiments, and therefore, in the present embodiment, they will not be described again.

[0096] Specifically, in the present embodiment, the flow guide groove 313A is arranged in a crescent shape, compared with the flow guide groove 313 in the above-mentioned embodiment, in the present embodiment, the flow guide groove 313A is more recessed inward from the soft scope inner core 31A, that is, the flow guide groove 313A is more recessed in the longitudinal direction of the soft scope inner core 31A, and the visual unit 3112A and the illumination unit 3113A are arranged on both sides of the outer end surface 3111A, so as to better utilize the space of the outer end surface 3111A, so that the space of the flow guide groove 3131A is maximized without affecting the operation of the visual unit 3112A and the illumination unit 3113A, so that the volume of the soft scope inner core 31A is reduced, which is more beneficial to the discharge of the crushed stones.

[0097] In other implementable manners, the flow guide groove 313 can also not be provided, that is, the end of the soft scope body 30 can be arranged in a circular or elliptical shape. Based on this, those skilled in the art should understand that whether the active bending sheath type urinary soft scope 1 is provided with the flow guide groove 313 is not a limitation of the present application

[0098] A third preferred embodiment of the present application is illustrated in FIG. 10, which provides a flexible ureteroscope 1B with an active bending sheath. The flexible ureteroscope 1B in this preferred embodiment is a variant of the first preferred embodiment described above. Compared with the first preferred embodiment, the flow guide groove 313B is changed in this embodiment.

[0099] In this embodiment, the guide sheath 10 and the active bending sheath 20 are similar to those in the above embodiments, and thus are not described in detail in this embodiment.

[0100] Specifically, in this embodiment, the flow guide groove 313B is linear, and compared with the flow guide groove 313B in the above embodiments, the flow guide groove 313B is more deeply recessed laterally from the inner core 31B, and the visual unit 3112B and the illumination unit 3113B are arranged on both sides of the outer end surface 3111B to better utilize the space of the outer end surface 3111B, so that the space of the flow guide groove 3131B is maximized without affecting the operation of the visual unit 3112B and the illumination unit 3113B, so that the volume of the inner core 31B is reduced, which is more conducive to the discharge of the stone fragments.

[0101] As shown in FIGS. 11 to 16, a clogging prevention ureteroscope 61 according to a preferred embodiment of the present application is shown. The clogging prevention ureteroscope 61 is used for treating ureteral stones or kidney stones. The surgical steps of the clogging prevention ureteroscope 61 are as follows: a guide wire is extended to the ureter of a patient, the clogging prevention ureteroscope 61 is inserted along the guide wire, the stones are crushed, sucked and discharged, the clogging prevention ureteroscope 61 is withdrawn, a ureteral stent is left in place along the guide wire, and the guide wire is withdrawn.

[0102] For ease of description, the direction of the clogging prevention ureteroscope 61 into the patient's body is defined as front, and vice versa. The surgical position of the front end of the clogging prevention ureteroscope 61 in the patient's body is defined as the inner side, and vice versa, which is close to the urethra of the patient. The clogging prevention ureteroscope 61 is defined as having two states, an installation state and a stone discharge state. When the clogging prevention ureteroscope 61 is in the installation state, the clogging prevention ureteroscope 61 is placed at the predetermined surgical position for stone crushing work, and irrigation and suction are performed at the same time. When large stones or polyp-enclosed stones are encountered, the clogging prevention ureteroscope 61 is controlled for processing.

[0103] The anti-blocking type ureteroscope 61 comprises an outer sheath assembly 610 and an inner core assembly 620. The outer sheath assembly 610 and the inner core assembly 620 are adapted to be fitted to each other. The outer sheath assembly 610 and the inner core assembly 620 together form the anti-blocking type ureteroscope 61. The outer sheath assembly 610 is adapted to be fitted to the outside of the inner core assembly 620. In other words, the outer sheath assembly 610 is adapted to be fitted to the outside of the inner core assembly 620. When the anti-blocking type ureteroscope 61 is in the installed state, the outer sheath assembly 610 and the inner core assembly 620 are relatively fixedly inserted and extended into the ureter of the patient. When the anti-blocking type ureteroscope 61 is in the lithotripsy state, the outer sheath assembly 610 is movably fitted to the inner core assembly 620. In this embodiment, the front ends of the outer sheath assembly 610 and the inner core assembly 620 are extended into the ureter of the patient to define the predetermined position of the surgery for treating the stones in the ureter of the patient.

[0104] The anti-blocking type ureteroscope 61 has an exhaust passage 650 which is provided between the outer sheath assembly 610 and the inner core assembly 620. In other words, the exhaust passage 650 is formed by the gap between the outer sheath assembly 610 and the inner core assembly 620. The stones to be treated are exhausted to the outside of the body by the exhaust passage 650. In particular, the exhaust passage 650 of the anti-blocking type ureteroscope 61 in the installed state is smaller than the exhaust passage 650 of the anti-blocking type ureteroscope 61 in the lithotripsy state. The medical personnel can change the size of the exhaust passage 650 by controlling the relative positional relationship between the outer sheath assembly 610 and the inner core assembly 620.

[0105] It is worth mentioning that for larger stones to be treated, the stones can be exhausted by withdrawing the inner core assembly 620 from the outer sheath assembly 610. Specifically, the inside of the outer sheath assembly 610 forms the exhaust passage 650 to maximize the use of the exhaust space of the anti-blocking type ureteroscope 61. By withdrawing the inner core assembly 620 to the rear end of the outer sheath assembly 610, the outer sheath assembly 610 is maintained as the exhaust passage 650 to maximize the exhaust of the stones to be treated.

[0106] The anti-blocking type ureteroscope 61 has an extension region 630 and an operation region 640. The anti-blocking type ureteroscope 61 is inserted into the patient's body, and the front end of the inner core assembly 620 is extended to the predetermined position of the surgery in the ureter of the patient. The region inside the patient's body is defined as the extension region 630, and the region outside the patient's body is defined as the operation region 640. The medical personnel can operate the components of the operation region 640. In other words, the medical personnel can control the components of the operation region 640 to operate the components of the extension region 630.

[0107] The outer sheath assembly 610 includes a sheath body 611, an adjusting unit 613, a holding unit 614 and a suction unit 615. The sheath body 611 provides a mounting space, and the adjusting unit 613, the holding unit 614 and the suction unit 615 are mounted in the sheath body 611. The adjusting unit 613 and the holding unit 614 are located in the operation area 640. The suction unit 615 is located in the operation area 640. The suction unit 615 is communicated with the discharge channel 650. The discharge channel 650 is located in the extension area 630.

[0108] The suction unit 615 provides the function of negative pressure suction. The treated stones are discharged to the suction unit 615 through the discharge channel 650 and finally discharged to the outside of the patient's body. The adjusting unit 613 provides the control function of the suction unit 615. That is, the adjusting unit 613 is adapted to adjust the discharge efficiency of the treated stones. In other words, the medical staff can achieve controllable stone discharge through the adjusting unit 613. The holding unit 6144 provides a holding space to facilitate the holding of medical staff.

[0109] When the anti-blocking type urinary rigid endoscope 61 is in the stone discharge state, the medical staff holds the holding unit 614 with one finger and presses the adjusting unit 613 with the other finger to achieve efficiency control of the suction unit 615. In other words, the medical staff can control the anti-blocking type urinary rigid endoscope 61 with one hand.

[0110] The sheath body 611 has a containing cavity 6111 located in the interior of the sheath body 611. The inner core assembly 620 is adapted to be received in the containing cavity 6111. When the anti-blocking type urinary rigid endoscope 61 is in the mounted state, the inner core assembly 620 is arranged in the containing cavity 6111. When the anti-blocking type urinary rigid endoscope 61 is in the stone discharge state, the inner core assembly 620 is movably located in the containing cavity 6111. In detail, the inner core assembly 620 moves from front to back in the containing cavity 6111 to meet the requirements of the surgical purpose.

[0111] The adjusting unit 613 has an adjusting hole 6131, and the suction unit 615 has a suction hole 6151. The adjusting hole 6131 communicates the outside with the accommodating cavity 6111, and the suction hole 6151 communicates the outside with the accommodating cavity 6111. In the embodiment, the suction hole 6151 and the adjusting hole 6131 are disposed at opposite sides of each other. The suction hole 6151 is adapted to discharge the stones, and the adjusting hole 6131 is adapted to change the flow control of the liquid discharged by the suction hole 6151 by pressing the space size of the adjusting hole 6131 by the medical staff. In other words, the medical staff changes the pressure size of the discharge channel 650 by changing the tightness between the finger and the adjusting hole 6131, adjusts the suction and discharge force size of the drainage, stone discharge or contaminant, and can also adjust the pressure size in the renal pelvis, avoids the overlarge pressure in the renal pelvis from affecting the water flushing, and even causes the damage to the kidney of the patient and generates the serious complications.

[0112] The inner core assembly 620 includes a mirror body 621, a visual unit 623, an illumination unit 624 and a perfusion unit 625. The mirror body 621 provides a mounting space. The visual unit 623, the illumination unit 624 and the perfusion unit 625 are disposed in the mirror body 621. The visual unit 623 extends from the rear end side of the mirror body 621 to the front end, and the illumination unit 624 extends from the rear end side of the mirror body 621 to the front end. The perfusion unit 625 extends through the mirror body 621 from the rear end to the front end. The visual unit 623 provides the visual function, the illumination unit 624 provides the illumination function, and the perfusion unit 625 provides the perfusion flushing function.

[0113] The medical staff can obtain the visual field of the front end of the mirror body 621 through the visual unit 623. The visual field of the front end of the mirror body 621 can be provided with the illumination basis through the illumination unit 624. In other words, the illumination unit 624 provides the illumination necessary for the visual unit 623 to obtain the visual field. The medical staff can perform the perfusion flushing in the ureter of the patient through the perfusion unit 625.

[0114] It is worth mentioning that the irrigation unit 625 has an irrigation channel 6251 which penetrates the front and back end surfaces of the scope 621. A working instrument is adapted to extend in the irrigation channel 6251. In the present embodiment, the working instrument is implemented as a laser instrument with a front end. Also, an irrigation instrument is adapted to be introduced into the irrigation channel 6251. The irrigation instrument is adapted to perform irrigation flushing through the irrigation channel 6251. When the anti-blocking urological rigid scope 61 is installed, the front end of the anti-blocking urological rigid scope 61 extends to the ureter of the patient, the working instrument is introduced into the irrigation channel 6251 to perform laser lithotripsy, and the irrigation instrument is introduced into the irrigation channel 6251 to perform irrigation from the outside to the inside of the irrigation channel 6251. The working instrument is kept working, and the phenomenon of ureteral injury of the patient caused by overheating of the working environment is prevented.

[0115] In the present embodiment, the arrangement of the visual unit 623, the illumination unit 624 and the irrigation unit 625 is not limited by the present application. In the present embodiment, as viewed from the front end surface of the scope 621, the visual unit 623 and the irrigation unit 625 are distributed on both sides of the scope 621. The illumination unit 624 is distributed on both sides of the visual unit 623 and the irrigation unit 625. The front ends of the visual unit 623 and the illumination unit 624 are kept on the same plane, so that the visual unit 623 can obtain a clear field of view. The irrigation unit 625 and the visual unit 623 are located on the same plane, and the purpose is that when the working instrument extends from the back to the front of the irrigation channel 6251, the front end of the working instrument is located within the field of view of the visual unit 623, so that the working of the working instrument is always controllable within the range of medical personnel.

[0116] The scope 621 also has at least one pair of grooves 6211 which are arranged on both sides of the scope 621. The grooves 6211 are located in the extension area 630, and the grooves 6211 extend from the front end to the back end to the junction of the operation area 640 and the extension area 630. As viewed from the front end surface of the scope 621, the grooves 6211 are arranged on both sides of the visual unit 623 and the irrigation channel 6251.

[0117] It is worth mentioning that the grooves 6211 are arranged on the scope 621, and when the anti-blocking urological rigid scope 61 is not used, the outer sheath assembly 610 is removed from the inner core assembly 620. Medical personnel can directly clean the grooves 6211 on the scope 621 for cleaning work.

[0118] More noteworthy, in the present embodiment, the material of the outer sheath assembly 610 is optionally implemented as plastic material for one-time use. The material of the inner core assembly 620 is optionally implemented as metal material for repeated use. When the anti-blocking type urethral hard mirror 61 completes the operation, the medical staff discards the outer sheath assembly 610 which is directly in contact with the patient's body. The inner core assembly 620 inside the outer sheath assembly 610 is cleaned and disinfected. To ensure that the next operation can optionally use a new one-time outer sheath assembly 610 and the inner core assembly 620 which has been cleaned and disinfected. If the outer sheath assembly 610 is disinfected, the accommodating cavity 6111 of the sheath body 611 is located on the inner surface, and the anti-blocking type urethral hard mirror 61 is usually elongated to adapt to the natural channel of the human body. The inner surface of the sheath body 611 cannot be completely disinfected or increase the cost of additional disinfection. Compared with the inner core assembly 620, the groove 6211 on the outer surface of the mirror body 621 is easier to clean. There is no need to increase the cost of additional disinfection and ensure that disinfection is in place and no secondary infection occurs.

[0119] The outer sheath assembly 610 further comprises a mounting receiving unit 612, and the inner core assembly 620 further comprises a mounting insertion unit 622, and the mounting insertion unit 622 is adapted to be arranged in the mounting receiving unit 612. The inner core assembly 620 is adapted to be connected to the mounting receiving unit 612 through the mounting insertion unit 622 to realize the mounting of the outer sheath assembly 610 to achieve the mounting state of the anti-blocking type urethral hard mirror 61. That is, the outer sheath assembly 610 is assembled with the inner core assembly 620 through the mounting receiving unit 612 and the mounting insertion unit 622.

[0120] In the present embodiment, the mounting receiving unit 612 is implemented as an adjusting ring with internal threads, and the mounting insertion unit 622 is implemented as a mounting portion with external threads. The mounting insertion unit 622 is mounted with the mounting receiving unit 612 through the mutual assembly of external threads and internal threads.

[0121] In particular, the mounting receiving unit 612 and the mounting insertion unit 622 can be adjusted in real time during the mounting process according to the specific operation of the front end of the anti-blocking type urethral hard mirror 61. In detail, the medical staff can adjust the mounting insertion unit 622 to be connected to the mounting receiving unit 612 outside the patient's body. The mirror body 621 and the sheath body 611 are kept in relative position movement at the front end of the anti-blocking type urethral hard mirror 61.

[0122] Specifically, when the stone in the ureter of the patient is too large, the medical staff can change the positional relationship between the front end of the mirror body 621 and the front end of the sheath body 611 by adjusting the relative positional relationship between the installation receiving unit 612 and the installation insertion unit 622. The front end of the sheath body 611 is annular, and the front end of the mirror body 621 is frustoconical. That is, except for the front end face of the mirror body 621, the side part extends in a wedge shape. When the anti-blocking type urological rigid endoscope 61 is in the installation state, the front end face of the mirror body 621 protrudes from the front end face of the sheath body 611, and the front end face of the mirror body 621 is located in front of the front end face of the sheath body 611. When the anti-blocking type urological rigid endoscope 61 is in the lithotripsy state, the installation insertion unit 622 is shifted backward to move the mirror body 621 as a whole backward. The front end face of the mirror body 621 gradually approaches the front end face of the sheath body 611, and as the lithotripsy operation continues, the front end face of the mirror body 621 is located behind the front end face of the sheath body 611. When the anti-blocking type urological rigid endoscope 61 is in the installation state, the discharge channel 650 is the gap between the groove 6211 and the sheath body 611. When the anti-blocking type urological rigid endoscope 61 is in the lithotripsy state, the cross-sectional area of the discharge channel 650 is the cross-sectional area of the front end face of the sheath body 611.

[0123] An example of the surgical steps of the anti-blocking type urological rigid endoscope 61 is as follows: a guide wire is inserted into the urethra of a patient, the front end of the guide wire is kept inside the renal pelvis of the patient, and the rear end of the guide wire extends backward along the urethra of the patient. The anti-blocking type urological rigid endoscope 61 is assembled on the guide wire. The irrigation channel 6251 is sleeved on the guide wire from back to front, and the anti-blocking type urological rigid endoscope 61 is inserted along the guide wire. The anti-blocking type urological rigid endoscope 61 passes through the urethra, the bladder, and finally enters the ureter of the patient in sequence. Stones are found in the ureter of the patient through the visual unit 623. The guide wire is withdrawn from the front end to the rear end along the irrigation channel 6251 until it is outside the patient's body. The working instrument is inserted into the irrigation channel 6251 from back to front, and the front end of the working instrument extends to the front end of the sheath body 611. The visual unit 623 provides a real-time operating field of view of the working environment. The illumination unit 624 provides the necessary illumination for the visual unit 623. The working instrument in the patient's body is operated through the control outside the patient's body, and the lithotripsy operation is performed. The front end of the working instrument is perfused and flushed from back to front through the irrigation channel 6251, which plays a certain role in cooling and reflux to keep the operating field of view clear at all times.

[0124] Meanwhile, the medical staff controls the adjusting hole 6131 to perform negative pressure suction on the exhaust passage 650. The front end of the working instrument is ensured to be in a working environment under perfusion and suction, so as to avoid excessive pressure in the patient's kidney due to perfusion, and thus avoid damage to the patient's kidney. When a large stone or a polyp is encountered, the scope 621 is retracted backward, so as to expand the exhaust passage 650. The medical staff controls the adjusting hole 6131 to achieve the result of discharging the stone from the suction hole 6151.

[0125] Until the stone in the patient's ureter is crushed, the working instrument is withdrawn from the front to the rear along the perfusion passage 6251 to the outside of the patient's body. The guide wire is inserted along the perfusion passage 6251 from the rear to the front until it extends to the patient's renal pelvis. The anti-blocking type of urinary hard scope 61 is withdrawn from the front to the rear to the outside of the patient's body. A ureteral stent is inserted along the guide wire, and the front end of the ureteral stent is located at the patient's renal pelvis, and the rear end is located at the patient's bladder. The guide wire is withdrawn from the front to the rear to the outside of the patient's body. The front and rear ends of the ureteral stent are respectively clamped at the junctions of the patient's renal pelvis and ureter and the bladder and ureter, and thus the surgical process is completed.

[0126] It is worth mentioning that when a large stone or a polyp is encountered, the inner core assembly 620 is retracted along the outer sheath assembly 610, and the front end of the inner core assembly 620 is kept behind the front end of the outer sheath assembly 610. The exhaust passage 650 is changed from the previous groove 6211 to a passage with the cross section of the containing cavity 6111 as the outlet, so as to ensure the maximum discharge area.

[0127] In particular, the application also provides a head assembly, which comprises a sheath front segment and a scope front segment, and has a stone discharge passage. The sheath front segment is suitable for providing hardness support, and the scope front segment is suitable for providing perfusion and visual operation. The scope front segment is suitable for being surrounded by the sheath front segment, that is, when the head assembly is in an installed state, the scope front segment is suitable for being installed inside the sheath front end. When the head assembly is in a working state, the scope front segment provides visual, perfusion, and stone crushing functions, and the sheath front segment provides hardness support.

[0128] When the head assembly is in an installed state, the sheath front segment and the scope front segment form the stone discharge passage, which is suitable for discharging the stone treated by the scope front end. That is, the stone is discharged to the outside of the patient's body through the stone discharge passage.

[0129] It is worth mentioning that when the head assembly is installed, the sheath front section is clamped to the mirror front section from back to front, and the stone discharge channel is located inside the sheath front section and the mirror front section. In other words, the stone discharge channel is not connected to the inside and outside of the patient's body. When the head assembly is in operation, the mirror front section retreats from the sheath front section, and the stone discharge channel is exposed between the sheath front section and the mirror front section. That is, the stone discharge channel is connected to the inside and outside of the patient's body at this time. The cleaned stones in the patient's body can be discharged through the stone discharge channel.

[0130] More importantly, the head assembly is suitable for being installed on a rigid mirror or a flexible mirror, and is not limited by the present application. The head assembly can be designed to have at least one recess arranged on the circumferential side of the mirror front section. The recess can also be implemented as a strip arranged on the circumferential side of the mirror front section, so as to increase the gap between the mirror front section and the sheath front section, increase the space of the stone discharge channel, and facilitate stone discharge.

[0131] In addition, the recess can be implemented as a plurality of grooves with different lengths from the mirror front section, irregularly arranged on the mirror front section, that is, the gap of the stone discharge channel is increased, and the strength of the mirror front section is not affected.

[0132] In another embodiment, the stone discharge channel can be implemented as a gap formed between the planar structure or micro-protrusion structure of the mirror front section and the sheath front section, so as to allow the passage of crushed stones and perfusion liquid.

[0133] In another embodiment, when the head assembly is installed, the sheath front section is clamped to the mirror front section from back to front. The mirror front section has a recess, and the gap between the sheath front section and the mirror front section forms the recess, which allows the passage of crushed stones and perfusion liquid. When the head assembly is in the stone discharge state, the mirror front section moves from front to back, and moves to the opposite position with the sheath front section, so as to increase the passage area of the stone discharge channel, and thus realize efficient stone discharge.

[0134] As shown in FIGS. 17 and 18, the anti-blocking urinary rigid mirror 61A provided by the present application is a schematic diagram of a second preferred embodiment. The anti-blocking urinary rigid mirror 61A is used for treating ureteral calculi. The surgical steps of the anti-blocking urinary rigid mirror 61A are as follows: a guide wire is extended to the patient's renal pelvis, the anti-blocking urinary rigid mirror 61A is entered along the guide wire, the stones are crushed, the stones are discharged, the anti-blocking urinary rigid mirror 61A is withdrawn, a ureteral stent is left along the guide wire, and the guide wire is withdrawn.

[0135] The anti-blocking type ureteroscope 61 A includes an outer sheath assembly 610A and an inner core assembly 620A. The outer sheath assembly 610A and the inner core assembly 620A are adapted to be fitted to each other. The outer sheath assembly 610A and the inner core assembly 620A together constitute the anti-blocking type ureteroscope 61 A. The outer sheath assembly 610A is adapted to be mounted outside the inner core assembly 620A. In other words, the outer sheath assembly 610A is adapted to be fitted outside the inner core assembly 620A. When the anti-blocking type ureteroscope 61 A is in the installed state, the outer sheath assembly 610A and the inner core assembly 620A are relatively fixedly inserted and extended into the ureter of a patient. When the anti-blocking type ureteroscope 61 A is in the lithotripsy state, the outer sheath assembly 610A is movably mounted to the inner core assembly 620A. In this embodiment, the front ends of the outer sheath assembly 610A and the inner core assembly 620A are extended to a predetermined position of the surgery in the ureter of the patient to treat the stones in the ureter of the patient. In this embodiment, the main difference between the anti-blocking type ureteroscope 61 A and the above-mentioned embodiments is that the front end of the inner core assembly 620A is changed.

[0136] The anti-blocking type ureteroscope 61 A has an exhaust passage 650A which is provided between the outer sheath assembly 610A and the inner core assembly 620A. In other words, the exhaust passage 650A is formed by the gap between the outer sheath assembly 610A and the inner core assembly 620A. The treated stones are exhausted to the outside of the body by the exhaust passage 650A. In particular, the exhaust passage 650A of the anti-blocking type ureteroscope 61 A in the installed state is smaller than the exhaust passage 650A of the anti-blocking type ureteroscope 61 A in the lithotripsy state. The medical personnel can change the size of the exhaust passage 650A by controlling the relative positional relationship between the outer sheath assembly 610A and the inner core assembly 620A.

[0137] In the case of larger treated stones, the stones can be removed by the method of withdrawing the inner core assembly 620A from the outer sheath assembly 610A. Specifically, the inner portion of the outer sheath assembly 610A forms the exhaust passage 650A to maximize the use of the exhaust space of the anti-blocking type ureteroscope 61 A. By withdrawing the inner core assembly 620A to the rear end of the outer sheath assembly 610A, the outer sheath assembly 610A is maintained as the exhaust passage 650A, which maximizes the removal of the treated stones.

[0138] The inner core assembly 620A includes a scope 621A, a visual unit 623A, an illumination unit 624A, and an irrigation unit 625A. The scope 621A provides a mounting space. The visual unit 623A, the illumination unit 624A, and the irrigation unit 625A are arranged in the scope 621A. The visual unit 623A extends from the rear end side of the scope 621A to the front end, and the illumination unit 624A extends from the rear end side of the scope 621A to the front end. The irrigation unit 625A extends through the scope 621A from the rear end to the front end. The visual unit 623A provides a visual function, the illumination unit 624A provides an illumination function, and the irrigation unit 625A provides an irrigation function.

[0139] A medical practitioner can obtain a visual field of view of the front end of the scope 621A through the visual unit 623A. The visual field of view of the front end of the scope 621A can be provided with an illumination basis through the illumination unit 624A. In other words, the illumination unit 624A provides the necessary light for the visual unit 623A to obtain a visual field of view. The medical practitioner can perform an irrigation procedure on the ureter of a patient through the irrigation unit 625A.

[0140] It is worth mentioning that the irrigation unit 625A has an irrigation channel 6251A extending through the front and rear end faces of the scope 621A. The irrigation channel 6251A is adapted to extend a working instrument. In this embodiment, the working instrument is implemented as a laser instrument. Furthermore, the irrigation channel 6251A is also adapted to extend an irrigation instrument. The irrigation instrument is adapted to perform an irrigation procedure through the irrigation channel 6251A. When the anti-blocking urological rigid scope 61A is in the installed state, the front end of the anti-blocking urological rigid scope 61A extends to the ureter of a patient, the working instrument is extended into the irrigation channel 6251A to perform a laser lithotripsy procedure, and the irrigation instrument is extended into the irrigation channel 6251A to perform an irrigation procedure from the outside to the inside of the irrigation channel 6251A. This prevents the working instrument from being damaged due to overheating of the working environment while the working instrument is working.

[0141] In the present embodiment, the visual unit 623A and the perfusion unit 625A are distributed on both sides of the mirror body 621A as viewed from the front end surface of the mirror body 621A. The illumination unit 624A is distributed on both sides of the visual unit 623A and the perfusion unit 625A. The front ends of the visual unit 623A and the illumination unit 624A are kept on the same plane so that the visual unit 623A can acquire a clear field of view. The perfusion unit 625A and the visual unit 623A are located on the same plane, and the purpose is that when the working instrument extends from the rear to the front of the perfusion channel 6251A, the front end of the working instrument is located within the field of view of the visual unit 623A, so as to keep the work of the working instrument within the controllable range of medical staff at all times.

[0142] The mirror body 621A also has at least one groove 6211A arranged on the circumferential side of the mirror body 621A. In the present embodiment, the groove 6211A is semicircular. The groove 6211 extends from the front end to the rear end of the mirror body 621A. Until it extends to the junction of the inner core assembly 620A and the outer sheath assembly 610A. Compared with the above-mentioned embodiment, the gap formed between the groove 6211A and the outer sheath assembly 610A is larger, which is beneficial for the discharge of larger volume of calculi to the outside of the patient's body.

[0143] In another embodiment of the present application, as shown in FIG. 619, a pair of grooves 6211B do not penetrate a mirror body 621B. The grooves 6211B are arranged on both sides of the mirror body 621B from front to back in a tapered manner, so as to facilitate the discharge of larger calculi from the gap between the grooves 6211B and a sheath body 611B to the outside of the patient's body. The shape of the groove 6211B is not limited by the present application. The discharge channel 650 is located between the mirror body 621B and the sheath body 611B, and when the mirror body 621B retreats in the sheath body 611B, the discharge channel 650 is increased compared with the space before, so as to facilitate efficient discharge of gravel and perfusion fluid.

[0144] Those skilled in the art should understand that the embodiments of the present application described above and shown in the drawings are only examples and do not limit the present application. The purpose of the present application has been completely and effectively achieved. The function and structural principle of the present application has been shown and explained in the embodiments, and the implementation of the present application can be any modification or modification without departing from the principle.

Claims

1. An actively curved sheath flexible ureteroscope characterized in that, It comprises: a bending sheath, which comprises a bending sheath body, a control handle connected to the rear end of the bending sheath body, and a connecting channel; and a soft mirror body, which comprises a soft mirror inner core and a soft mirror handle connected to the rear end of the soft mirror inner core, the soft mirror inner core is adapted to be put into the connecting channel, the bending sheath is sleeved on the outside of the soft mirror body, the bending sheath body and the soft mirror inner core are sleeved, the control handle and the soft mirror handle are sleeved, an attraction channel is formed between the outer wall of the soft mirror inner core and the inner wall of the bending sheath body, and the bending sheath body is adapted to bend to drive the soft mirror inner core to bend.

2. The bending sheath type urinary soft mirror according to claim 1, wherein the bending sheath body comprises a bending unit and a connecting unit, the two ends of the connecting unit are connected to the bending unit and the control handle respectively, the control handle comprises a control part and a bending handle arranged on the control part, and the bending handle is adapted to control the bending unit to bend.

3. The bending sheath type urinary soft mirror according to claim 2, wherein the control handle further comprises a negative pressure adjusting port and an attraction port, the attraction port extends inward from the surface of the control handle to communicate with the attraction channel, and the negative pressure adjusting port communicates with the attraction channel to control the attraction force of the attraction port.

4. The bending sheath type urinary soft mirror according to claim 3, wherein the control handle further comprises a sealing piece arranged on the inner wall of the rear part of the control handle and located between the negative pressure adjusting port and the terminal port of the connecting channel.

5. The bending sheath type urinary soft mirror according to claim 4, wherein the soft mirror inner core further comprises an extension part and a main core body, the two ends of the main core body are connected to the extension part and the soft mirror handle respectively, and the extension part is adapted to extend out of the connecting channel.

6. The bending sheath type urinary soft mirror according to claim 5, wherein the extension part comprises an outer end face, a visual unit and at least one illumination unit, and the visual unit and the illumination unit are arranged on the outer end face.

7. The bending sheath type urinary soft mirror according to claim 6, wherein the soft mirror body further comprises an irrigation channel, an instrument channel and a visual channel, the front part of the irrigation channel and the instrument channel are the same channel, and the visual channel is independently and longitudinally arranged in the soft mirror body.

8. The bending sheath type urinary soft mirror according to claim 7, wherein the soft mirror handle comprises an irrigation port and an instrument port, and the irrigation port and the instrument port extend inward from the surface of the soft mirror handle to respectively communicate with the irrigation channel and the instrument channel.

9. The active bending sheath ureteroscope according to claim 8, wherein the active bending sheath further comprises a first adjusting portion arranged on the control handle, the soft scope body further comprises a second adjusting portion arranged on the soft scope handle, the first adjusting portion and the second adjusting portion are adapted to be connected and fixed to each other to connect the soft scope handle and the control handle to each other.

10. The active bending sheath ureteroscope according to claim 9, wherein the first adjusting portion and the second adjusting portion are connected and fixed to each other by screwing, clamping, buckling or magnetic attraction.

11. The active bending sheath ureteroscope according to any one of claims 1 to 10, wherein the active bending sheath ureteroscope further comprises a guide sheath adapted to be inserted into the connecting channel of the active bending sheath, the guide sheath has a guide wire channel, a guide wire is adapted to be inserted into the guide wire channel, and the guide sheath is adapted to enter a predetermined lesion through the guide wire.

12. The active bending sheath ureteroscope according to claim 11, wherein the guide sheath further comprises a wedge-shaped head arranged at the front end of the guide sheath body, and the wedge-shaped head is arranged in a tapered shape to push away the human tissue of the patient.

13. The active bending sheath ureteroscope according to claim 12, wherein the bending unit is arranged in a snake bone or spiral structure, the soft scope inner core is made of flexible material, and the bending of the bending sheath body drives the bending of the soft scope inner core.

14. A blockage resistant urological scope, characterized in that, including: an outer sheath assembly; an inner core assembly, the inner core assembly comprising a scope, a visual unit, an illumination unit and an irrigation unit, the scope being adapted to be mounted inside the outer sheath assembly, the visual unit, the illumination unit and the irrigation unit being mounted on the front end surface of the scope, the visual unit being adapted to acquire the front end visual field, the illumination unit providing illumination, and the irrigation unit providing irrigation suction; and an exhaust channel, the outer sheath assembly being sleeved outside the inner core assembly, the gap between the outer sheath assembly and the inner core assembly forming the exhaust channel to provide a stone removal path, and the size of the exhaust channel being changed by changing the positional relationship between the inner core assembly and the outer sheath assembly.

15. The anti-blocking ureteroscope according to claim 14, wherein the scope has at least one groove arranged on the circumferential side of the scope, and the groove is located on the circumferential side of the visual unit, the illumination unit and the irrigation unit.

16. The anti-blocking ureteroscope according to claim 15, wherein the outer sheath assembly comprises a sheath body, an adjusting unit, a holding unit and a suction unit, the adjusting unit, the holding unit and the suction unit being mounted on the sheath body, the suction unit being controlled by the adjusting unit, and the medical staff being adapted to control the holding unit and the adjusting unit with one hand.

17. The anti-blocking type urethral scope according to claim 16, wherein said suction unit has a suction hole, said suction hole being in communication with said discharge channel.

18. The anti-blocking type urethral scope according to claim 14, wherein said anti-blocking type urethral scope has an extended region and an operating region, said extended region being located in a patient's body when said anti-blocking type urethral scope is in use, said operating region being located outside a patient's body when said anti-blocking type urethral scope is in use.

19. The anti-blocking type urethral scope according to any one of claims 17 to 18, wherein said adjusting unit has an adjusting hole, a gap of said adjusting hole controlling an outflow efficiency of said suction hole.

20. The anti-blocking type urethral scope according to claim 19, wherein said sheath assembly comprises a mounting receiving unit, said inner core assembly comprises a mounting inserting unit, said mounting receiving unit being arranged at a rear end of said sheath body, said mounting inserting unit being arranged at a front end of said scope body, said sheath assembly being adapted to be mounted by a mutual cooperation of said mounting inserting unit and said mounting receiving unit.

21. The anti-blocking type urethral scope according to claim 20, wherein said mounting inserting unit is adapted to be movably connected to said mounting receiving unit, so as to control a positional relationship between said front end of said scope body and said front end of said sheath body.

22. The anti-blocking type urethral scope according to claim 21, wherein said sheath body has a receiving cavity, said scope body being adapted to be placed in said receiving cavity, said scope body being clamped in said receiving cavity from rear to front, so as to reach a mounted state of said anti-blocking type urethral scope.

23. The anti-blocking type urethral scope according to any one of claims 14 to 18, wherein an outer surface of said sheath assembly has a hydrophilic coating, and said sheath assembly is disposable.

24. An anti-blockable urological scope, characterized in that, comprising: a sheath body; a mounting receiving unit, said mounting receiving unit being arranged at a rear end of said sheath body; a scope body, said scope body being adapted to be mounted in an interior of said sheath body; a mounting inserting unit, said mounting inserting unit being arranged at a middle portion of said scope body, said mounting inserting unit being movably fitted to said mounting receiving unit; a visual unit; an illumination unit; an irrigation unit; and a discharge channel, wherein said visual unit, said illumination unit and said irrigation unit are arranged at a front end surface of said scope body, said discharge channel being located at a side portion of said visual unit, said illumination unit and said irrigation unit, said visual unit acquiring a front end visual field of said scope body, said illumination unit providing light to said visual unit, said irrigation unit and said discharge channel forming a backflow of an irrigation fluid.

25. The anti-blocking type urethral scope according to claim 11, wherein a surgical instrument and a guide wire are adapted to be inserted into said irrigation channel, said irrigation channel being through said front end surface and said rear end surface of said scope body.

26. The anti-blocking type urethral scope according to claim 12, wherein said scope body has a groove, said groove extending from said front end of said scope body to rear, said discharge channel having a larger area in a stone-removing state of said anti-blocking type urethral scope than in a mounted state of said anti-blocking type urethral scope. ​

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