Visual flexible ureteroscope sheath for urinary surgery

Abstract

The invention discloses a visual flexible ureteroscope sheath for urinary surgery, and relates to the technical field of flexible ureteroscope sheaths, the visual flexible ureteroscope sheath comprises an upper shell, the outer surface of the upper shell is movably provided with a lower shell, the inner side surface of the upper shell is fixedly provided with a positioning rod, and a limiting mechanism is arranged between the lower shell and the positioning rod; a sealing sheath is fixedly installed on the outer surface of the lower shell, and a guiding mechanism is arranged between the sealing sheath and the connecting piece. An outer sheath is fixedly installed on the inner side face of the lower shell, and a sealing mechanism is arranged between the outer sheath and the camera system connector. According to the visual flexible ureteroscope sheath for the urinary surgery, normal saline is conveyed to the injection channel through the gas-liquid backflow channel, the gas-liquid backflow channel is provided with an annular flow dividing channel, under the action of internal pressure, gas is exhausted through the exhaust assembly, the gas in the injection channel is further exhausted through the elastic gas-liquid bag, and the normal saline is injected into the injection channel through the elastic gas-liquid bag. The situation that the kidney pressure changes when normal saline is injected, and consequently the kidney pressure is too large and damaged is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible mirror sheaths, and particularly to a visible ureteral flexible mirror sheath for urology. Background Art

[0002] In urological surgeries, when a doctor needs to insert a flexible mirror into the ureter for detection and treatment, in order to protect the ureter and guide the flexible mirror, a flexible ureteral flexible mirror sheath tube is usually required. The ureteral flexible mirror sheath tube generally consists of three parts: an inner layer, a middle layer, and an outer layer.

[0003] However, during the insertion process of the existing flexible mirror sheath, the sheath tube will rub against the patient's ureter, causing damage to the patient's ureter.

[0004] To solve the above defects, in the prior art, a Chinese patent with the publication number CN212699099U discloses a visible ureteral flexible mirror sheath. Three channels are provided inside the inner core, namely a guide wire channel, a water injection channel, and a camera system channel; the outer sheath includes two parts: a sheath tube and the tail of the outer sheath. The camera system channel and the water injection channel are provided in the inner core; by connecting the camera system, the specific position of the head of the ureteral flexible mirror sheath and the internal environment of the ureter can be observed in real time; the water injection channel can ensure that the channel is flushed by injecting normal saline to avoid unclear vision caused by obstacles, and at the same time, it also plays a lubricating role, facilitating the placement of the ureteral flexible mirror sheath; operating in a visible environment is more convenient, ensuring that the placement position of the ureteral flexible mirror sheath is controllable, improving the accuracy and success rate of the surgery, reducing surgical complications, simplifying the surgical operation, and improving surgical safety.

[0005] Moreover, in the prior art, a Chinese patent with the publication number CN221130693U discloses a bendable, visible, and negative pressure suction ureteral sheath, including a sheath tube seat. One side of the sheath tube seat is provided with a sheath tube. An expansion tube is inserted into the sheath tube seat, and the expansion tube passes through the sheath tube and extends to the outside of the sheath tube. A deformable tube is provided at the end of the sheath tube. A bending part is provided at one end of the expansion tube extending to the outside of the sheath tube. One end of the expansion tube passing through the sheath tube seat is provided with an expansion tube seat. Utilizing the active bending performance of the ureteral flexible mirror, the operator can operate the handle of the ureteral flexible mirror to bend the combination of the ureteral flexible mirror and the ureteral sheath, and the combination of the ureteral flexible mirror and the expansion tube as a whole, which is beneficial for passing through the tortuous parts of the urethra and the ureter. Under visible conditions, the ureteral sheath can be indwelled. Under visible conditions, the ureteral sheath can be directly placed, and there is no need to place a guide wire with a rigid ureteral mirror in advance, saving the time of operating the rigid ureteral mirror and the consumable cost of the guide wire, improving the success rate of inserting the ureteral sheath, and improving the safety of the surgery.

[0006] During the use of the above device, the injection channel is utilized to facilitate the injection of normal saline for flushing the channel, thereby facilitating the cleaning of the inside of the channel. However, during the injection of normal saline in the above device, the injection channel is prone to leakage, thus affecting the use of the device. Therefore, in actual use, the injection channel is prone to leakage. Summary of the Invention

[0007] The purpose of the present invention is to provide a visible ureteral flexible sheath for urology to solve the problem of easy leakage of the injection channel proposed in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A visible ureteral flexible sheath for urology, including an upper housing, the outer surface of the upper housing is movably installed with a lower housing, the inner side surface of the upper housing is fixedly installed with a positioning rod, the inner side surface of the lower housing is fixedly installed with a clamping column, the inner side surface of the lower housing is fixedly installed with a positioning plate, the inner side surface of the lower housing is fixedly installed with a guiding column, and a limiting mechanism for auxiliary positioning is arranged between the lower housing and the positioning rod; the outer surface of the lower housing is fixedly installed with a sealing sheath, the inner side surface of the sealing sheath is threadedly installed with a connecting piece, and a guiding mechanism for negative pressure drainage is arranged between the sealing sheath and the connecting piece; the inner side surface of the lower housing is fixedly installed with an outer sheath, the inner side surface of the lower housing is fixedly installed with a camera system connector, and a sealing mechanism is arranged between the outer sheath and the camera system connector.

[0009] Furthermore, the outer surface of the lower housing is fixedly installed with a sheath pipe connector, the outer surface of the sheath pipe connector is fixedly installed with a hose, and the inner side surface of the hose is fixedly installed with a camera assembly.

[0010] Furthermore, the inner side surface of the upper housing is movably abutted with an adjusting disk, the outer surface of the adjusting disk is fixedly installed with a driving assembly, the outer surface of the driving assembly is fixedly installed with a collection chamber, and the outer surface of the collection chamber is fixedly installed with a reset assembly, and the adjusting disk and the driving assembly form a rotating structure.

[0011] Furthermore, a guide wire is movably installed on the inner side surface of the collection chamber, there are two groups of the guide wires, and the outer surfaces of the two groups of guide wires are movably abutted with the guiding column.

[0012] Furthermore, the limiting mechanism includes an elastic limiting sleeve, the elastic limiting sleeve is fixedly installed on the outer surface of the guide wire, and the outer surface of the guide wire is movably abutted with the positioning plate.

[0013] Furthermore, a gas-liquid return channel is fixedly installed on the outer surface of the outer sheath, an injection channel is fixedly installed on the outer surface of the gas-liquid return channel, the injection channel is movably abutted with the inner side surface of the positioning plate, and an elastic gas-liquid bag is fixedly installed on the outer surface of the injection channel.

[0014] Furthermore, the sealing mechanism includes a sealing sleeve fixedly installed on the inner side surface of the outer sheath, and an exhaust assembly is fixedly installed on the inner side surface of the outer sheath.

[0015] Furthermore, an optical fiber is fixedly installed on the outer surface of the camera system connector, and the optical fiber is fixedly installed on the inner side surface of the lower housing.

[0016] Furthermore, the guiding mechanism includes an annular channel, a connecting piece is fixedly installed on the outer surface of the annular channel, a first branch channel is fixedly installed on the outer surface of the annular channel, and a second branch channel is fixedly installed on the outer surface of the connecting piece.

[0017] Furthermore, a negative pressure assembly is fixedly installed on the outer surface of the sealing sheath, a pressure sensing channel is fixedly installed on the outer surface of the negative pressure assembly, and a pressure relief channel is fixedly installed on the outer surface of the negative pressure assembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) Normal saline is transmitted to the injection channel through the gas-liquid reflux channel, and then transmitted to the kidney through the elastic gas-liquid sac for injection. The gas-liquid reflux channel is provided with an annular diversion channel. Under the action of the internal pressure, the gas is discharged through the exhaust assembly. When injecting normal saline, it is necessary to ensure that the exhaust assembly is in the upper vertical plane to avoid liquid reflux through the exhaust assembly, which may affect gas discharge. The internal sealing performance is increased through the sealing sleeve, and the elastic gas-liquid sac is used to further discharge the gas inside the injection channel, avoiding the change of the pressure in the kidney when injecting normal saline, which may cause excessive pressure in the kidney and damage it.

[0020] (2) By connecting the injection assembly at the outer sheath, after the hose enters the patient's kidney through the ureter, by injecting normal saline, the risk of internal infection can be reduced, and it is convenient for the camera system to better observe the kidney, improving the comfort of the patient.

[0021] (3) The negative pressure assembly installed on the sealing sheath facilitates the adjustment of the pressure in the kidney. The pressure is discharged through the pressure relief channel, and the internal pressure is monitored through the pressure sensing channel, improving the safety of the patient.

[0022] (4) The sealing sheath is connected with a connecting piece. The first branch channel and the second branch channel provided are used to conveniently divert and discharge the internal liquid, improving the efficiency of the operation. Before the operation, it is necessary to perform a comprehensive disinfection treatment on medical components such as guide wires and hoses to avoid the risk of infection for the patient. By injecting perfusion fluid, the inside of the ureter is kept lubricated, thereby reducing the pain of the patient and reducing the friction of the hose on the ureter.

[0023] (5) Connect the lower housing and the hose through a sheath connector. There are multiple groups of channels inside the sheath connector and the hose, which facilitates the independent distribution of guide wires, injection channels, sealing sheaths, optical fibers, etc., avoiding internal damage caused by component disorder. The hose is made of medical-grade rubber material, with high elasticity and high bending degree, thus improving the safety of the operation.

[0024] (6) Connect to the imaging system through an imaging system connector and transmit through an optical fiber, which facilitates real-time observation of the internal situation of the kidney through the imaging system. And it is convenient to observe the patient's kidney through the imaging component, increasing the visibility of the patient's kidney for medical staff, facilitating medical staff to timely change the operation plan according to different patients, and improving the success rate of the operation.

[0025] (7) By rotating the adjustment disk, the adjustment disk drives the drive assembly to rotate, the drive assembly drives the collection chamber to rotate, and the collection chamber drives two groups of guide wires to pull the hose to bend, thus facilitating the control of the orientation of the hose and facilitating the monitoring of the patient's kidney. The lower housing is provided with multiple groups of guide posts, which are used to limit and adjust the guide wires, improving the flexibility of the hose bending and facilitating the increase of the bending degree of the hose, so that the hose can observe the kidney in all directions.

[0026] (8) Limit the guide wire through the cooperation of the elastic limit sleeve and the positioning plate, avoiding excessive bending of the hose, which may cause the hose to rupture. And when the hose bends and deflects in the kidney, the hose can be retracted and the kidney bending can be carried out again, avoiding damage to the kidney caused by forced bending and reducing the risk of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a three-dimensional structure schematic diagram of the sheath connector of the present invention;

[0029] Figure 3 It is a three-dimensional structure schematic diagram of the upper housing of the present invention;

[0030] Figure 4 It is a three-dimensional structure schematic diagram of the injection channel of the present invention;

[0031] Figure 5 It is a three-dimensional structure schematic diagram of the adjustment disk of the present invention;

[0032] Figure 6 It is a three-dimensional structure schematic diagram of the outer sheath of the present invention;

[0033] Figure 7 It is a three-dimensional structure schematic diagram of the annular channel of the present invention;

[0034] Figure 8Schematic cross-sectional structure diagram of the connector of the present invention;

[0035] Figure 9 Schematic three-dimensional structure diagram of the seal sleeve of the present invention;

[0036] Figure 10 Schematic three-dimensional structure diagram of the hose of the present invention.

[0037] In the figure: 1. Upper housing; 2. Lower housing; 3. Sheath tube connector; 4. Hose; 5. Camera assembly; 6. Positioning rod; 7. Clamping post; 8. Adjusting disc; 9. Driving assembly; 10. Collection chamber; 11. Reset assembly; 12. Guide wire; 13. Guide post; 14. Elastic limit sleeve; 15. Positioning plate; 16. Injection channel; 17. Elastic gas-liquid bag; 18. Gas-liquid return channel; 19. Outer sheath; 20. Exhaust assembly; 21. Seal sleeve; 22. Camera system connector; 23. Optical fiber; 24. Seal sheath; 25. Negative pressure assembly; 26. Pressure sensing channel; 27. Pressure relief channel; 28. Annular channel; 29. First branch channel; 30. Connector; 31. Second branch channel. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiment 1: Please refer to Figure 1 - Figure 10 , the present invention provides the following technical solutions: A visible ureteral flexible endoscope sheath for urology includes an upper housing 1, a lower housing 2 is movably installed on the outer surface of the upper housing 1, a positioning rod 6 is fixedly installed on the inner side surface of the upper housing 1, a clamping post 7 is fixedly installed on the inner side surface of the lower housing 2, a positioning plate 15 is fixedly installed on the inner side surface of the lower housing 2, a guide post 13 is fixedly installed on the inner side surface of the lower housing 2, and a limiting mechanism for auxiliary positioning is provided between the lower housing 2 and the positioning rod 6; a seal sheath 24 is fixedly installed on the outer surface of the lower housing 2, a connector 30 is threadedly installed on the inner side surface of the seal sheath 24, and a guiding mechanism for negative pressure drainage is provided between the seal sheath 24 and the connector 30; an outer sheath 19 is fixedly installed on the inner side surface of the lower housing 2, a camera system connector 22 is fixedly installed on the inner side surface of the lower housing 2, and a sealing mechanism is provided between the outer sheath 19 and the camera system connector 22.

[0040] The limiting mechanism for auxiliary positioning provided between the lower housing 2 and the positioning rod 6 facilitates the limiting of the guide wire 12, thereby avoiding damage caused by excessive bending of the hose 4. And the guiding mechanism for negative pressure drainage provided between the sealing sheath 24 and the connecting piece 30 facilitates reducing the pressure in the kidney and avoiding damage to the kidney caused by excessive internal pressure during the operation. Also, the sealing mechanism provided between the outer sheath 19 and the camera system connector 22 improves the sealing performance of the outer sheath 19, thereby avoiding the phenomenon of liquid leakage when injecting physiological saline and improving the safety of the operation.

[0041] Embodiment 2: On the basis of Embodiment 1, please refer to Figure 1 - Figure 6 , a guide post 13 is also disclosed, and its specific structure is as follows: A sheath pipe connecting piece 3 is fixedly installed on the outer surface of the lower housing 2, a hose 4 is fixedly installed on the outer surface of the sheath pipe connecting piece 3, a camera assembly 5 is fixedly installed on the inner side surface of the hose 4, an adjusting disk 8 is movably abutted against the inner side surface of the upper housing 1, a driving assembly 9 is fixedly installed on the outer surface of the adjusting disk 8, a collection chamber 10 is fixedly installed on the outer surface of the driving assembly 9, and a reset assembly 11 is fixedly installed on the outer surface of the collection chamber 10. And the adjusting disk 8 and the driving assembly 9 form a rotating structure. A guide wire 12 is movably installed on the inner side surface of the collection chamber 10. There are two groups of guide wires 12. A guide post 13 is movably abutted against the outer surfaces of the two groups of guide wires 12. The limiting mechanism includes an elastic limiting sleeve 14 which is fixedly installed on the outer surface of the guide wire 12, and a positioning plate 15 is movably abutted against the outer surface of the guide wire 12.

[0042] The lower housing 2 and the flexible tube 4 are connected through a sheath connector 3, and multiple groups of channels are arranged inside the sheath connector 3 and the flexible tube 4, facilitating the independent distribution of the guide wire 12, the injection channel 16, the sealing sheath 24, the optical fiber 23, etc., avoiding internal damage caused by component disorder. The flexible tube 4 is made of medical-grade rubber material, having high elasticity and high bending degree, thereby improving the safety of the operation. It is connected to the imaging system through the imaging system connector 22 and transmitted through the optical fiber 23, facilitating the real-time observation of the internal situation of the kidney through the imaging system. And it is convenient to observe the patient's kidney through the imaging component 5, increasing the visibility of the patient's kidney for medical staff, facilitating medical staff to timely change the operation plan according to different patients, and improving the success rate of the operation. By rotating the adjustment disc 8, the adjustment disc 8 drives the drive assembly 9 to rotate, the drive assembly 9 drives the collection chamber 10 to rotate, and the collection chamber 10 drives the two guide wires 12 to pull the flexible tube 4 to bend, thereby facilitating the control of the orientation of the flexible tube 4 and facilitating the monitoring of the patient's kidney. The lower housing 2 is provided with multiple groups of guide posts 13, using the guide posts 13 to limit and adjust the guide wire 12, improving the flexibility of the bending of the flexible tube 4, facilitating the increase of the bending degree of the flexible tube 4, so that the flexible tube 4 can observe the kidney in all directions. And the guide wire 12 is limited by the cooperation of the elastic limit sleeve 14 and the positioning plate 15, avoiding excessive bending of the flexible tube 4, which may cause the flexible tube 4 to rupture. And when the flexible tube 4 bends and deflects in the kidney, the flexible tube 4 can be retracted and the kidney bending can be performed again, avoiding damage to the kidney caused by forced bending and reducing the risk of the operation.

[0043] Embodiment 3: On the basis of Embodiment 1, please refer to Figure 4 - Figure 9 , and the injection channel 16 is also disclosed, and its specific structure is as follows: The outer surface of the outer sheath 19 is fixedly installed with a gas-liquid return channel 18, the outer surface of the gas-liquid return channel 18 is fixedly installed with the injection channel 16, the injection channel 16 is movably abutted against the inner side surface of the positioning plate 15, the outer surface of the injection channel 16 is fixedly installed with an elastic gas-liquid capsule 17, the sealing mechanism includes a sealing sleeve 21, the sealing sleeve 21 is fixedly installed on the inner side surface of the outer sheath 19, the inner side surface of the outer sheath 19 is fixedly installed with an exhaust assembly 20, the outer surface of the imaging system connector 22 is fixedly installed with an optical fiber 23, the optical fiber 23 is fixedly installed on the inner side surface of the lower housing 2, the guiding mechanism includes an annular channel 28, the outer surface of the annular channel 28 is fixedly installed with a connector 30, the outer surface of the annular channel 28 is fixedly installed with a first branch channel 29, the outer surface of the connector 30 is fixedly installed with a second branch channel 31, the outer surface of the sealing sheath 24 is fixedly installed with a negative pressure assembly 25, the outer surface of the negative pressure assembly 25 is fixedly installed with a pressure sensing channel 26, and the outer surface of the negative pressure assembly 25 is fixedly installed with a pressure relief channel 27.

[0044] Connect the injection component at the outer sheath 19. After the flexible tube 4 enters the patient's kidney through the ureter, inject normal saline to reduce the risk of internal infection, facilitate better observation of the kidney by the imaging system, improve the patient's comfort. The normal saline is transmitted to the injection channel 16 through the gas-liquid reflux channel 18, and then transmitted to the kidney through the elastic gas-liquid bladder 17 for injection. The gas-liquid reflux channel 18 is provided with an annular diversion channel. Under the action of the internal pressure, the gas is discharged through the exhaust component 20. When injecting normal saline, it is necessary to ensure that the exhaust component 20 is in the upper vertical plane to avoid the backflow of liquid through the exhaust component 20, which may affect gas discharge. The internal seal is increased by the sealing sleeve 21, and the elastic gas-liquid bladder 17 is used to further discharge the gas inside the injection channel 16 to avoid changes in the pressure of the kidney during the injection of normal saline, which may cause excessive pressure in the kidney and damage it. The negative pressure component 25 installed through the sealing sheath 24 facilitates the adjustment of the pressure in the kidney, and the pressure is discharged through the pressure relief channel 27. The internal pressure is monitored through the pressure sensing channel 26 to improve the patient's safety. The sealing sheath 24 is connected to the connector 30, and the first branch channel 29 and the second branch channel 31 are used to facilitate the diversion and discharge of the internal liquid, improving the efficiency of the operation. Before the operation, it is necessary to perform a comprehensive disinfection treatment on medical components such as the guide wire 12 and the flexible tube 4 to avoid the risk of patient infection. Injecting perfusion fluid keeps the inside of the ureter lubricated, thereby reducing the patient's pain and reducing the friction of the flexible tube 4 against the ureter.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A visible ureteral flexible scope sheath for urology, including an upper housing (1), wherein the lower housing (2) is movably installed on the outer surface of the upper housing (1), and it is characterized in that: A positioning rod (6) is fixedly installed on the inner side surface of the upper housing (1), a clamping column (7) is fixedly installed on the inner side surface of the lower housing (2), a positioning plate (15) is fixedly installed on the inner side surface of the lower housing (2), a guiding column (13) is fixedly installed on the inner side surface of the lower housing (2), and a limiting mechanism for auxiliary positioning is arranged between the lower housing (2) and the positioning rod (6); A sealing sheath (24) is fixedly installed on the outer surface of the lower housing (2), a connecting piece (30) is threadedly installed on the inner side surface of the sealing sheath (24), and a guiding mechanism for negative pressure drainage is arranged between the sealing sheath (24) and the connecting piece (30); An outer sheath (19) is fixedly installed on the inner side surface of the lower housing (2), a camera system connector (22) is fixedly installed on the inner side surface of the lower housing (2), and a sealing mechanism is arranged between the outer sheath (19) and the camera system connector (22).

2. The visible ureteral flexible scope sheath for urology according to claim 1, characterized in that: A sheath pipe connector (3) is fixedly installed on the outer surface of the lower housing (2), a hose (4) is fixedly installed on the outer surface of the sheath pipe connector (3), and a camera assembly (5) is fixedly installed on the inner side surface of the hose (4).

3. The visible ureteral flexible scope sheath for urology according to claim 1, wherein: An adjusting disc (8) is movably abutted against the inner side surface of the upper housing (1), a driving assembly (9) is fixedly installed on the outer surface of the adjusting disc (8), a collection chamber (10) is fixedly installed on the outer surface of the driving assembly (9), and a reset assembly (11) is fixedly installed on the outer surface of the collection chamber (10), and the adjusting disc (8) and the driving assembly (9) form a rotating structure.

4. The visual ureteral flexible sheath for urology according to claim 3, characterized in that: A guide wire (12) is movably installed on the inner side surface of the collection chamber (10), there are two groups of the guide wires (12), and the outer surfaces of the two groups of guide wires (12) are movably abutted against the guiding column (13).

5. The visible ureteral flexible ureteroscope sheath for urology according to claim 1, wherein: The limiting mechanism includes an elastic limiting sleeve (14), the elastic limiting sleeve (14) is fixedly installed on the outer surface of the guide wire (12), and the outer surface of the guide wire (12) is movably abutted against the positioning plate (15).

6. The visible ureteral flexible ureteroscope sheath for urology according to claim 1, characterized in that: A gas-liquid return channel (18) is fixedly installed on the outer surface of the outer sheath (19), an injection channel (16) is fixedly installed on the outer surface of the gas-liquid return channel (18), the injection channel (16) is movably abutted against the inner side surface of the positioning plate (15), and an elastic gas-liquid bag (17) is fixedly installed on the outer surface of the injection channel (16).

7. A visible ureteral flexible scope sheath for urology according to claim 1, characterized in that: The sealing mechanism includes a sealing sleeve (21), the sealing sleeve (21) is fixedly installed on the inner side surface of the outer sheath (19), and an exhaust assembly (20) is fixedly installed on the inner side surface of the outer sheath (19).

8. The visual ureteral flexible ureteroscope sheath for urology according to claim 1, characterized in that: An optical fiber (23) is fixedly installed on the outer surface of the camera system connector (22), and the optical fiber (23) is fixedly installed on the inner side surface of the lower housing (2).

9. The visible ureteral flexible ureteroscope sheath for urology according to claim 1, wherein: The guiding mechanism includes an annular channel (28), a connecting member (30) is fixedly installed on the outer surface of the annular channel (28), a first branch channel (29) is fixedly installed on the outer surface of the annular channel (28), and a second branch channel (31) is fixedly installed on the outer surface of the connecting member (30).

10. A visible ureteral flexible scope sheath for urology according to claim 1, characterized in that: A negative pressure assembly (25) is fixedly installed on the outer surface of the sealing sheath (24), a pressure sensing channel (26) is fixedly installed on the outer surface of the negative pressure assembly (25), and a pressure relief channel (27) is fixedly installed on the outer surface of the negative pressure assembly (25).

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