Flexible ureteroscope
By introducing adjustment devices for primary and secondary bends into the flexible ureteroscope, the problem that existing flexible ureteroscopes cannot fully observe all calyces of the kidney has been solved, enabling effective observation of cases with severe hydronephrosis or large spaces in the renal collecting system.
Patent Information
- Application Number
- CN202422659222.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing flexible ureteroscope tip can be bent 270° but still cannot see the bottom of each calyx of the kidney, which limits its applicability in cases of severe hydronephrosis or when the kidney collecting system has a large space.
A flexible ureteroscope was designed, comprising a primary bending section and a secondary bending section, and an adjustment device for the primary and secondary bending sections was provided at the operating end. The adjustment device for the secondary bending section includes a gear and an automatic locking component. Automatic locking is achieved by the engagement of the gear and the automatic locking component, thereby enhancing the observation range of the lens.
The addition of primary and secondary bends enhances the observation range of the ureteroscope, making it suitable for cases with severe hydronephrosis or large renal collecting system space, and enabling comprehensive observation of all calyces of the kidney.
Smart Images
Figure CN223930154U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a flexible ureteroscope. Background Technology
[0002] Ureteral stones are usually caused by kidney stones that are temporarily obstructed at the narrow part of the ureter during the expulsion process. If the ureteral stone is not expelled, it may gradually grow larger at the site of obstruction. Ureteral stones are usually accompanied by obvious symptoms and require emergency treatment. Ureteroscopic lithotripsy involves inserting a ureteroscope through the urethra and bladder into the ureter. The stone is then removed using a stone basket or forceps, or under ureteroscopic guidance, lithotripsy equipment such as pneumatic ballistic lithotripters or laser lithotripters can be used to precisely break the stone, allowing the fluid and stone fragments to be directly drained out of the ureteroscope.
[0003] Existing ureteroscopes are divided into rigid ureteroscopes and flexible ureteroscopes. Rigid ureteroscopes are easy to operate and can be easily passed through the ureter to reach the renal pelvis. However, because the tip of a rigid ureteroscope cannot be bent, it cannot be adjusted to enter the different groups of renal calyces for various diagnostic and treatment purposes after entering the renal pelvis. Flexible ureteroscopes can only bend at the tip. In cases of severe hydronephrosis or large renal collecting system space, although the tip can be bent 270°, it is still not possible to observe the bottom of each calyx of the kidney. This results in significant technical limitations of flexible ureteroscopes, reducing their applicability. Utility Model Content
[0004] The purpose of this invention is to provide a flexible ureteroscope to solve the aforementioned problems in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A flexible ureteroscope includes an operating end, a flexible sheath, and a flexible endoscope body that are interconnected. The operating end is used to adjust and control the bending angle of the flexible endoscope body. The flexible sheath is used to connect the operating end and the flexible endoscope body. The flexible endoscope body is used to observe the inside of the kidney. One side of the operating end is provided with an instrument operation channel communicating with the flexible sheath. The flexible endoscope body includes a primary bending section and a secondary bending section. A miniature camera is connected to the end of the primary bending section. The operating end is provided with a primary bending section adjustment device and a secondary bending section adjustment device that can respectively adjust and control the bending angles of the primary bending section and the secondary bending section.
[0007] This utility model of a flexible ureteroscope is provided with a primary bending section and a secondary bending section, and the operating end is provided with a primary bending section adjustment device and a secondary bending section adjustment device for adjusting the bending angle of the primary bending section and the secondary bending section, respectively; and the secondary bending section adjustment device includes a gear and an automatic locking component. Compared with the prior art, it has the following advantages:
[0008] 1. The addition of primary and secondary bends increases the observation range of the flexible ureteroscope, making it more suitable for cases with severe hydronephrosis or large renal collecting system space;
[0009] 2. Automatic locking can be achieved by interlocking the gears and automatic locking components in the secondary bending adjustment device, which frees up the hands to adjust the primary bending adjustment device.
[0010] Optionally, both the primary and secondary curved sections employ snake-bone hinges, with the snake-bone hinge of the primary curved section being thinner than that of the secondary curved section.
[0011] Optionally, the first-stage bending section can achieve a bidirectional 270-degree bending.
[0012] Optionally, the secondary bending section can achieve a unidirectional 90-degree bending.
[0013] Optionally, the secondary bending adjustment device includes a gear connected to one side of the operating end, a handle connected to the outside of the gear, and an automatic locking component connected to the handle by a spring; rotating the handle can drive the gear to rotate, and the automatic locking component is used to lock the gear.
[0014] Optionally, the automatic locking component is provided with a protruding end, and the protruding end is engaged with the gear to achieve automatic locking.
[0015] Optionally, the inner ring of the spring is provided with a column that is connected to the handle.
[0016] Optionally, an angle disc for observing the rotation angle of the handle is also provided on the outer side of the gear, and the angle disc is located between the handle and the gear.
[0017] Optionally, the end of the operating terminal is further provided with an imaging optical cable for connecting the imaging device.
[0018] Beneficial effects: The flexible ureteroscope of this invention is provided with a primary bending section and a secondary bending section, and the operating end is provided with a primary bending section adjustment device and a secondary bending section adjustment device to adjust the bending angle of the primary bending section and the secondary bending section respectively; and the secondary bending section adjustment device includes a gear and an automatic locking component. Compared with the prior art, it has the following advantages:
[0019] 1. The addition of primary and secondary bends increases the observation range of the flexible ureteroscope, making it more suitable for cases with severe hydronephrosis or large renal collecting system space;
[0020] 2. Automatic locking can be achieved by interlocking the gears and automatic locking components in the secondary bending adjustment device, which frees up the hands to adjust the primary bending adjustment device. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of the flexible ureteroscope in the embodiment;
[0022] Figure 2 This is a schematic diagram of the overall structure of the secondary bending adjustment device in the locked state in the embodiment;
[0023] Figure 3 This is a schematic diagram of the overall structure of the secondary bending adjustment device in the unlocked state in the embodiment.
[0024] In the diagram: 1. Operating end; 2. Flexible endoscope sheath; 3. Flexible endoscope body; 31. Primary bending section; 310. Miniature camera; 32. Secondary bending section; 4. Instrument operating channel; 5. Primary bending section adjustment device; 6. Secondary bending section adjustment device; 61. Gear; 62. Handle; 63. Spring; 64. Automatic locking component; 641. Protruding end; 65. Column; 7. Angle disc; 8. Imaging optical cable. Detailed Implementation
[0025] Example
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.
[0027] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0028] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.
[0029] like Figures 1-3 As shown, this embodiment provides a flexible ureteroscope, see [link to relevant documentation]. Figure 1 The device includes an operating end 1, a flexible endoscope sheath 2, and a flexible endoscope body 3, all interconnected. The operating end 1 is used to adjust and control the bending angle of the flexible endoscope body 3. The flexible endoscope sheath 2 connects the operating end 1 and the flexible endoscope body 3. The flexible endoscope body 3 is used to observe the internal condition of the kidney. An instrument operation channel 4 communicating with the flexible endoscope sheath 2 is provided on one side of the operating end 1. The flexible endoscope body 3 includes a primary bending section 31 and a secondary bending section 32. A miniature camera 310 is connected to the end of the primary bending section 31. Specifically, a connecting part is provided between the primary bending section 31 and the secondary bending section 32. The end of the primary bending section 31 has a tip, into which the miniature camera 310 is inserted. Both the connecting part and the tip are made of biocompatible rigid material. The columnar body can be made of stainless steel, with a connecting part length of 15-25mm and a tip length of 5-8mm. The operating end 1 is equipped with a primary bending adjustment device 5 and a secondary bending adjustment device 6, which can respectively adjust and control the bending angle of the primary bending part 31 and the secondary bending part 32. Specifically, the operating end 1 has a wire channel through which the wire passes. There are two wires, which are respectively connected between the primary bending part 31 and the primary bending adjustment device 5, and between the secondary bending part 32 and the secondary bending adjustment device 6. The angle of the primary bending part 31 and the secondary bending part 32 can be adjusted by pulling the wires. The two wires can share a wire channel or have separate wire channels.
[0030] In an optional embodiment, both the primary bending portion 31 and the secondary bending portion 32 employ snake-bone hinges, with the snake-bone hinge of the primary bending portion 31 being thinner than that of the secondary bending portion 32. Specifically, the snake-bone hinge of the primary bending portion 31 is thinner, has a greater degree of bending, and poorer support; while the snake-bone hinge of the secondary bending portion 32 is wider, has a smaller degree of bending, and better support.
[0031] In an optional embodiment, the primary bending section 31 is capable of bidirectional 270-degree bending.
[0032] In an optional embodiment, the secondary bending portion 32 is capable of unidirectional 90-degree bending.
[0033] In an optional implementation, see Figure 2 and Figure 3 The secondary bending adjustment device 6 includes a gear 61 connected to one side of the operating end 1, a handle 62 connected to the outside of the gear 61, and an automatic locking member 64 connected to the handle 62 by a spring 63; rotating the handle 62 can drive the gear 61 to rotate, and the automatic locking member 64 is used to lock the gear 61.
[0034] In an optional implementation, see Figure 2 and Figure 3 The automatic locking component 64 is provided with a protruding end 641, which is engaged with the gear 61 to achieve automatic locking. Specifically, the protruding end 641 is crescent-shaped. When locking, the automatic locking component 64 needs to be pulled out so that the protruding end 641 engages with the gear 61. When unlocking, the automatic locking component 64 is pressed to disengage the protruding end 641 from the gear 61 to achieve unlocking.
[0035] In an optional embodiment, the inner ring of the spring 63 is provided with a post 65 connected to the handle 62; the setting of the post 65 limits the range of motion of the spring 63.
[0036] In an optional implementation, see Figure 1 An angle disk 7 for observing the rotation angle of the handle 62 is also provided on the outer side of the gear 61. The angle disk 7 is located between the handle 62 and the gear 61. The angle disk 7 facilitates the observation of the rotation angle of the handle 62.
[0037] In an optional implementation, see Figure 1 The end of the operating end 1 is also provided with an imaging optical cable 8 for connecting the imaging device; specifically, the operating end 1 is provided with an optical fiber channel running through it along the axial direction; the imaging optical cable 8 passes through the optical fiber channel and is connected to the miniature camera 310 at the end of the flexible endoscope body 3, so that the condition inside the kidney can be observed through the imaging device, which facilitates the operation of the instrument.
[0038] Working principle: When using this flexible ureteroscope, in cases with mild hydronephrosis and limited intrarenal space, only the primary bending section 31 needs to be used. The adjustment method of the primary bending section 31 is the existing adjustment method. In cases with severe hydronephrosis and a larger intrarenal space, the secondary bending section 32 can be used first. Push the handle 62 backward and press down the automatic locking member 64 to achieve automatic unlocking. Then rotate the handle 62 to achieve the required secondary bending angle, and then pull out the automatic locking member 64 to engage with the gear 61 to achieve automatic locking. When rotating the handle 62, the angle disc 7 can also be observed to make the secondary bending section 32 bend to the required bending angle. It can also be used in conjunction with the existing primary bending section to observe positions that cannot be observed with existing flexible ureteroscopes.
[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A flexible ureteroscope, comprising an operating end (1), a flexible endoscope sheath (2), and a flexible endoscope body (3) communicating with each other, wherein the operating end (1) is used to adjust and control the bending angle of the flexible endoscope body (3), the flexible endoscope sheath (2) is used to connect the operating end (1) and the flexible endoscope body (3), and the flexible endoscope body (3) is used to observe the internal condition of the kidney; one side of the operating end (1) is provided with an instrument operation channel (4) communicating with the flexible endoscope sheath (2), characterized in that, The soft lens body (3) includes a primary bending section (31) and a secondary bending section (32). The end of the primary bending section (31) is connected to a miniature camera (310). The operating end (1) is provided with a primary bending section adjustment device (5) and a secondary bending section adjustment device (6) that can respectively adjust and control the bending angle of the primary bending section (31) and the secondary bending section (32).
2. The flexible ureteroscope according to claim 1, characterized in that, Both the primary bending section (31) and the secondary bending section (32) employ snake-bone hinges, with the snake-bone hinge of the primary bending section (31) being thinner than that of the secondary bending section (32).
3. The flexible ureteroscope according to claim 1, characterized in that, The first-level bending section (31) can achieve a bidirectional 270-degree bending.
4. The flexible ureteroscope according to claim 1, characterized in that, The secondary bending section (32) can achieve a unidirectional 90-degree bend.
5. The flexible ureteroscope according to claim 1, characterized in that, The secondary bending adjustment device (6) includes a gear (61) connected to one side of the operating end (1), a handle (62) connected to the outside of the gear (61), and an automatic locking member (64) connected to the handle (62) by a spring (63); rotating the handle (62) can drive the gear (61) to rotate, and the automatic locking member (64) is used to lock the gear (61).
6. The flexible ureteroscope according to claim 5, characterized in that, The automatic locking component (64) is provided with a protruding end (641), which is engaged with the gear (61) to achieve automatic locking.
7. The flexible ureteroscope according to claim 5, characterized in that, The inner ring of the spring (63) is provided with a column (65) that is connected to the handle (62).
8. The flexible ureteroscope according to claim 5, characterized in that, An angle disc (7) for observing the rotation angle of the handle (62) is also provided on the outside of the gear (61), and the angle disc (7) is located between the handle (62) and the gear (61).
9. The flexible ureteroscope according to claim 1, characterized in that, The end of the operating terminal (1) is also provided with an imaging optical cable (8) for connecting the imaging device.