Damage-preventing flexible ureteroscope leading-in sheath
By designing the anti-damage ureteral soft lens introduction sheath, using the retraction mechanism of the inner core and spring, the problem of damage to the traditional ureteral sheath during the insertion process is solved, the protection of the ureter and renal pelvic mucosa is achieved, and the guide wire operation is facilitated.
Patent Information
- Application Number
- CN202421375725.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The lack of buffer structure of traditional ureter sheaths leads to excessive force during the insertion process, which leads to damage to the ureter and renal pelvic mucosa.
A soft-scope introduction sheath of anti-damage ureteral anti-damage ureteral soft lens is designed, including an outer sheath, an inner core, a connecting piece and a spring. The inner core is connected by a spring and can retract when it encounters resistance to avoid excessive force. The tip of the inner core shrinks into the outer sheath to protect the ureter and renal pelvic mucosa.
The retractable inner core structure avoids damage to the ureter and renal pelvic mucosa, provides protection, and facilitates the passage of the guide wire through a transparent connector and scale groove.
Smart Images
Figure CN223196058U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, in particular to a damage-resistant ureteroscope introduction sheath. Background Art
[0002] In clinical medicine, before performing retrograde ureteroscopy, a ureteral guide sheath is inserted into the ureter to guide the ureteroscope and direct the irrigation fluid in real time, maintaining a clear field of view and reducing intra-renal pelvic pressure. Traditional ureteral sheaths lack a cushioning structure, making them prone to injury due to excessive force during insertion. Utility Model Content
[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an anti-damage ureteroscope introduction sheath, which solves the problem that the traditional ureteral sheath does not have a buffer structure, which makes it easy to cause damage due to excessive force when inserting the ureter.
[0004] The technical solution of the present utility model is as follows: an anti-damage ureteroscope introduction sheath comprises an outer sheath, the inner wall of the outer sheath is movably connected to an inner core, the outer wall of the outer sheath is connected to the inner wall of the connector, the bottom of the inner wall of the connector is connected to the bottom end of a spring, the top of the spring is connected to the bottom of the inner core, a guide wire hole is provided on the inner wall of the inner core, a first funnel hole is provided at the bottom of the inner wall of the inner core, and the first funnel hole is communicated with the guide wire hole.
[0005] As a further solution of the present invention: the bottom of the connecting piece is connected to the top of the handle, and a second funnel hole is opened on the top of the inner wall of the handle, and the shape of the second funnel hole is adapted to the shape of the first funnel hole.
[0006] As a further solution of the present invention: the connecting piece is made of a transparent material, and a scale groove is provided on the outer wall of the connecting piece.
[0007] As a further solution of the present invention: the length from the top of the inner core to the top of the outer sheath is 1 cm, and the retractable length of the spring is 2 cm.
[0008] The working principle and beneficial effects of the utility model are as follows:
[0009] 1. The damage-resistant ureteroscope introduction sheath is provided with an outer sheath, an inner core, a connector and a spring. When in use, when inserting into the ureter, if resistance is encountered, the spring will be compressed, causing the inner core to retract relative to the outer sheath. When the resistance reaches a certain level, the tip of the inner core will retract into the outer sheath. The introduction sheath is retractable, which can avoid damage caused by excessive force when inserting into the ureter, thereby protecting the ureter and renal pelvic mucosa.
[0010] 2. The damage-resistant ureteroscope introduction sheath is provided with a first funnel hole, a second funnel hole, a handle and a scale groove. When in use, the damping scale can be intuitively seen through the transparent connector and the scale groove. At the same time, the inlet and outlet of the first funnel hole and the second funnel hole are larger than the guide wire hole, thereby facilitating the passage of the guide wire. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0012] Figure 1 It is a three-dimensional structural diagram of the utility model;
[0013] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the outer sheath of the utility model;
[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the outer sheath of the utility model when viewed from the front;
[0015] Figure 4 This is a schematic diagram of the structure of the inner core explosion of the utility model;
[0016] In the figure: 1 outer sheath, 2 inner core, 3 connecting piece, 4 spring, 5 guide wire hole, 6 first funnel hole, 7 second funnel hole, 8 handle, 9 scale groove. DETAILED DESCRIPTION
[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] like Figure 1-4As shown, the utility model provides a technical solution: an anti-damage ureteroscope introduction sheath, comprising an outer sheath 1, the inner wall of the outer sheath 1 is movably connected with an inner core 2, the outer wall of the outer sheath 1 is connected to the inner wall of the connector 3, the bottom of the inner wall of the connector 3 is connected to the bottom end of the spring 4, the top of the spring 4 is connected to the bottom of the inner core 2, the inner wall of the inner core 2 is provided with a guide wire hole 5, the bottom of the inner wall of the inner core 2 is provided with a first funnel hole 6, the first funnel hole 6 is connected to the guide wire hole 5, by arranging the outer sheath 1, the inner core 2, the connector 3 and the spring 4, when in use, when inserted into the ureter, if resistance is encountered, the spring 4 will be compressed, so that the inner core 2 will retract relative to the outer sheath 1, and when the resistance reaches a certain level, the tip of the inner core 2 will retract into the outer sheath 1, and the introduction sheath is retractable. , when inserting the ureter, it can avoid damage caused by excessive force, thereby protecting the ureter and renal pelvic mucosa. The bottom of the connector 3 is connected to the top of the handle 8, and the top of the inner wall of the handle 8 is provided with a second funnel hole 7. The shape of the second funnel hole 7 is adapted to the shape of the first funnel hole 6. The connector 3 is made of transparent material, and the outer wall of the connector 3 is provided with a scale groove 9. By setting the first funnel hole 6, the second funnel hole 7, the handle 8 and the scale groove 9, when in use, the transparent connector 3 and the scale groove 9 can intuitively see the damping scale. At the same time, the inlet and outlet of the first funnel hole 6 and the second funnel hole 7 are both larger than the guide wire hole 5, which facilitates the passage of the guide wire. The length extending from the top of the inner core 2 to the top of the outer sheath 1 is 1 cm, and the retractable length of the spring 4 is 2 cm.
[0019] The working principle of this utility model is:
[0020] When inserted into the ureter, if resistance is encountered, the spring 4 will be compressed, causing the inner core 2 to retract relative to the outer sheath 1. When the resistance reaches a certain level, the tip of the inner core 2 will retract into the outer sheath 1. At the same time, the transparent connector 3 and the scale groove 9 can intuitively see the damping scale. At the same time, the inlet and outlet of the first funnel hole 6 and the second funnel hole 7 are both larger than the guide wire hole 5, which facilitates the passage of the guide wire.
[0021] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A trauma-resistant ureteroscope introduction sheath, comprising an outer sheath (1), characterized in that: The inner wall of the outer sheath (1) is movably connected to the inner core (2), the outer wall of the outer sheath (1) is connected to the inner wall of the connector (3), the bottom of the inner wall of the connector (3) is connected to the bottom end of the spring (4), the top of the spring (4) is connected to the bottom of the inner core (2), the inner wall of the inner core (2) is provided with a guide wire hole (5), the bottom of the inner wall of the inner core (2) is provided with a first funnel hole (6), and the first funnel hole (6) is connected to the guide wire hole (5).
2. The atraumatic ureteroscope introduction sheath according to claim 1, characterized in that: The bottom of the connecting member (3) is connected to the top of the handle (8), and a second funnel hole (7) is provided at the top of the inner wall of the handle (8), and the shape of the second funnel hole (7) is adapted to the shape of the first funnel hole (6).
3. The atraumatic ureteroscope introduction sheath according to claim 1, characterized in that: The connecting piece (3) is made of a transparent material, and a scale groove (9) is provided on the outer wall of the connecting piece (3).
4. The atraumatic ureteroscope introduction sheath according to claim 1, characterized in that: The length from the top of the inner core (2) to the top of the outer sheath (1) is 1 cm, and the retractable length of the spring (4) is 2 cm.