An adjustable curved ureteral sheath
By designing an adjustable ureteral sheath and using a rotating mechanism to adjust the curvature of the guide sheath, the problem of inaccurate positioning of existing ureteral sheaths was solved, a stable channel was established, and surgical time and the risk of tissue abrasion were reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHENG (SHENZHEN) HOLDING TECHNOLOGY CO LTD
- Filing Date
- 2025-01-02
- Publication Date
- 2026-06-09
AI Technical Summary
Existing disposable ureteral guide sheaths do not have the function of bending and accurate positioning, which means that the endoscope needs to be repositioned every time it is withdrawn, increasing the operation time and making it easy to abrade the tissue.
An adjustable ureteral sheath was designed, comprising a support, a Y-shaped body, a rotating mechanism, a guide sheath, and a dilation mechanism. By rotating the handle, the cam ring is driven to retract and extend the steel wire, adjusting the curvature of the guide sheath to achieve accurate positioning and stable channel establishment.
It reduces surgical time, lowers the risk of tissue abrasion, and improves surgical efficiency and safety.
Smart Images
Figure CN224331333U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to an adjustable ureteral sheath. Background Technology
[0002] Ureteral sheaths are used in urological surgery to establish a passage for endoscopes and other instruments to enter the urinary tract.
[0003] During surgery, endoscopes and other surgical instruments often need to be repeatedly inserted into the tissue through the ureteral guide sheath. However, because the existing disposable ureteral guide sheaths do not have the function of bending and accurate positioning, each time the endoscope is withdrawn and re-entered, it is necessary to reposition it through the endoscope, which increases the operation time. Moreover, bending the sheath may easily abrade the tissue and cause damage to the human body. Utility Model Content
[0004] In view of the aforementioned problems, this application is made in order to provide an adjustable ureteral sheath that overcomes or at least partially solves the aforementioned problems.
[0005] This invention discloses an adjustable ureteral sheath, comprising:
[0006] Support components, Y-shaped main body, rotating mechanism, guide sheath and expansion mechanism;
[0007] The Y-shaped main body includes a first connection port and a second connection port, the second connection port being used to connect to a vacuum device; the expansion mechanism includes an expander seat and an expander tube, the expander seat being disposed at the first connection port, the support member enclosing the expander seat; the guide sheath enclosing the expander tube;
[0008] The rotating mechanism includes a rotating handle, a cam ring, and a steel wire. The rotating handle is disposed on the cam ring, one end of the steel wire is disposed on the cam ring, the other end of the steel wire is disposed on the guide sheath, and the cam ring is disposed on the support member.
[0009] When the rotating handle is rotated, the rotating handle causes the cam ring to rotate relative to the support member. The cam ring retracts or expands the steel wire, and the steel wire adjusts the curvature of the guide sheath.
[0010] Furthermore, the rotation range of the rotary handle is 0-180°, and the cam ring has a groove on one side for releasing and receiving the steel wire.
[0011] Furthermore, the second connection port is provided with a negative pressure hole, and a pressure relief sleeve is provided corresponding to the position of the negative pressure hole.
[0012] Furthermore, the support member includes an upper cover, a lower cover, and a fixing block; the upper cover and the lower cover are fitted together, and the fixing block is disposed between the upper cover and the lower cover, and the fixing block is used to fix the relative position of the guide sheath and the support member.
[0013] Furthermore, it also includes a damping washer disposed between the cam ring and the support member.
[0014] Furthermore, the Y-shaped body also includes a third connection port and a sealing cap corresponding to the third connection port, the third connection port being used to connect surgical instruments.
[0015] Furthermore, the third connection port is provided with a fixing groove for connecting auxiliary equipment.
[0016] Furthermore, the guide sheath also includes a guide sheath seat for connecting the guide sheath to the first connection port.
[0017] This application has the following advantages:
[0018] In the embodiments of this application, addressing the shortcomings of existing technologies in urological surgery where repositioning is required after each endoscope withdrawal and re-entry, increasing surgical time and potentially causing abrasions to human tissue, this application proposes an adjustable ureteral sheath, comprising: a support member, a Y-shaped body, a rotating mechanism, a guide sheath, and a dilation mechanism; the Y-shaped body includes a first connection port and a second connection port, the second connection port being used to connect a vacuum device; the dilation mechanism includes a dilator seat and a dilator tube, the dilator seat being disposed at the first connection port, and the support member enclosing the dilator seat; the guide sheath enclosing the dilator tube; the rotating mechanism includes a rotating handle, a cam ring, and a steel wire, the rotating handle being disposed at the cam ring, one end of the steel wire being disposed at the cam ring, and the other end of the steel wire being disposed at the guide sheath, the cam ring being disposed at the support member; when the rotating handle is rotated, the rotating handle drives the cam ring to rotate relative to the support member, the cam ring retracts or expands the steel wire, and the steel wire adjusts the curvature of the guide sheath. The rotating mechanism allows for the bending and positioning of the ureteral sheath, establishing a stable channel that facilitates the entry and exit of endoscopes or surgical instruments to the lesion site without requiring angle adjustments each time, effectively reducing surgical time and minimizing the occurrence of unexpected situations. Attached Figure Description
[0019] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of an adjustable ureteral sheath provided in one embodiment of this application;
[0021] Figure 2 This is a schematic diagram of the structure of an adjustable ureteral sheath rotation mechanism according to an embodiment of this application;
[0022] Explanation of reference numerals in the attached drawings: 101, Y-shaped main body; 102, support component; 103, rotating handle; 104, first connection port; 105, second connection port; 106, third connection port; 107, pressure relief sleeve; 108, guide sheath; 109, expander tube; 110, sealing cap; 201, cam ring; 202, steel wire; 203, groove; 204, damping washer; 205, fixing block; 206, lower cover. Detailed Implementation
[0023] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0024] The inventors discovered through analysis of existing technologies that the existing disposable ureteral guide sheaths do not have the function of accurate bending and positioning. Therefore, each time the endoscope is withdrawn and re-entered, it is necessary to reposition it through the endoscope, which not only increases the operation time, but also makes it easy to abrade the tissue due to repeated bending, making the operation very inconvenient.
[0025] In the embodiments of this application, addressing the shortcomings of existing technologies in urological surgery where repositioning is required after each endoscope withdrawal and re-entry, increasing surgical time and potentially causing abrasions to human tissue, this application proposes an adjustable ureteral sheath, comprising: a support member, a Y-shaped body, a rotating mechanism, a guide sheath, and a dilation mechanism; the Y-shaped body includes a first connection port and a second connection port, the second connection port being used to connect a vacuum device; the dilation mechanism includes a dilator seat and a dilator tube, the dilator seat being disposed at the first connection port, and the support member enclosing the dilator seat; the guide sheath enclosing the dilator tube; the rotating mechanism includes a rotating handle, a cam ring, and a steel wire, the rotating handle being disposed at the cam ring, one end of the steel wire being disposed at the cam ring, and the other end of the steel wire being disposed at the guide sheath, the cam ring being disposed at the support member; when the rotating handle is rotated, the rotating handle drives the cam ring to rotate relative to the support member, the cam ring retracts or expands the steel wire, and the steel wire adjusts the curvature of the guide sheath. The rotating mechanism allows for the bending and positioning of the ureteral sheath, establishing a stable channel that facilitates the entry and exit of endoscopes or surgical instruments to the lesion site without requiring angle adjustments each time, effectively reducing surgical time and minimizing the occurrence of unexpected situations.
[0026] Reference Figure 1-2 The diagram illustrates the structure of an adjustable ureteral sheath, which may specifically include:
[0027] Support component 102, Y-shaped body 101, rotating mechanism, guide sheath 108 and expansion mechanism;
[0028] The Y-shaped main body 101 includes a first connection port 104 and a second connection port 105, the second connection port 105 being used to connect to a vacuum device; the expansion mechanism includes an expander seat and an expander tube 109, the expander seat being disposed at the first connection port 104, the support member 102 enclosing the expander seat; the guide sheath 108 enclosing the expander tube 109.
[0029] The rotating mechanism includes a rotating handle 103, a cam ring 201, and a steel wire 202. The rotating handle 103 is disposed on the cam ring 201. One end of the steel wire 202 is disposed on the cam ring 201, and the other end of the steel wire 202 is disposed on the guide sheath 108. The cam ring 201 is disposed on the support member 102.
[0030] When the rotating handle 103 is rotated, the rotating handle 103 drives the cam ring 201 to rotate relative to the support member 102. The cam ring 201 retracts and expands the steel wire 202, and the steel wire 202 adjusts the bending arc range of the guide sheath 108.
[0031] It should be noted that the rotating handle 103 drives the steel wire 202, thereby causing the guide sheath to bend, which facilitates lesion localization during surgery. Once the lesion is located and the angle of the lesion is determined, the angle can be locked. Each time, the endoscope and other surgical instruments only need to enter the tissue along the fixed angle to reach the lesion site, without the need for repeated localization, thus reducing the risk. The support member 102 can limit the rotation range of the rotating handle 103, thereby limiting the bending range of the guide sheath 108 and protecting the instruments from damaging the tissue during surgery.
[0032] The following will further describe an adjustable ureteral sheath in this exemplary embodiment.
[0033] Reference Figure 2 In one embodiment of this application, the rotation range of the rotating handle 103 is 0-180°, and the cam ring 201 has a groove 203 on one side for receiving and releasing the steel wire 202.
[0034] It should be noted that the rotation angle of the rotating handle 103 is limited by the shape of the support member 102 and the rotating handle 103. At the same time, the cam ring 201 is provided with a groove 203 to facilitate the positioning of the steel wire 202 and prevent the steel wire 202 from detaching or deflecting, which would result in inaccurate positioning angle.
[0035] In one embodiment of this application, the second connection port 105 is provided with a negative pressure hole, and a pressure relief sleeve 107 is provided corresponding to the position of the negative pressure hole.
[0036] It should be noted that conventional equipment typically requires operators to cover the negative pressure port with their hands for adjustment, which is inconvenient as the operators cannot leave the equipment. The pressure relief sleeve 107 covers the negative pressure port, allowing pressure adjustment without the need for hand coverage, ensuring stable pressure, and facilitating operator operation.
[0037] In one embodiment of this application, the support member 102 includes an upper cover, a lower cover 206, and a fixing block 205; the upper cover and the lower cover 206 are closed together, and the fixing block 205 is disposed between the upper cover and the lower cover 206, and the fixing block 205 is used to fix the relative position of the guide sheath 108 and the support member 102.
[0038] It should be noted that, referring to Figure 2 The fixing block 205 can fix the relative position of the guide sheath 108 and the steel wire 202, fix the guide sheath 108 inside the support member 102, fix the relative position of the steel wire 202, determine the path of the steel wire 202, and ensure the stability of the overall device.
[0039] In one embodiment of this application, a damping washer 204 is further included, which is disposed between the cam ring 201 and the support member 102.
[0040] It should be noted that the damping effect of the damping washer 204 is used to fix the rotation angle of the rotating handle 103, so that the rotating handle 103 can be automatically fixed when it is not subjected to external force after rotating a certain angle, which facilitates angle adjustment.
[0041] In one embodiment of this application, the Y-shaped body 101 further includes a third connection port 106 and a sealing cap 110 corresponding to the third connection port 106, wherein the third connection port 106 is used to connect surgical instruments.
[0042] It should be noted that the third connection port 106 is the entrance to the channel established by the ureteral sheath, which can be adapted to surgical instruments and connected to the base of the expander tube. The sealing cap 110 is provided so that the third connection port can be sealed when the third connection port 106 is not in use.
[0043] In one embodiment of this application, the third connection port 106 is provided with a fixing groove for connecting auxiliary equipment.
[0044] It should be noted that the corresponding fixing slot is designed so that the devices to be connected can be connected through the slot. The connection between the two is more compact and stable, and it is also easy to disassemble. Disassembly can be achieved without other auxiliary tools, which is convenient for operation.
[0045] In one embodiment of this application, the guide sheath 108 further includes a guide sheath seat for connecting the guide sheath to the first connection port 104.
[0046] It should be noted that the guide sheath seat is used to fix the guide sheath tube 108, and the first connection port 104 further fixes the guide sheath tube 108 by fixing the guide sheath seat.
[0047] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.
[0048] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.
[0049] The above provides a detailed description of an adjustable ureteral sheath provided by this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. An adjustable curved ureteral sheath, comprising: The device comprises a support, a Y-shaped main body, a rotating mechanism, a guide sheath and a dilating mechanism. The Y-shaped main body comprises a first connecting port and a second connecting port, the second connecting port is used for connecting a vacuum device; the dilating mechanism comprises a dilator seat and a dilator tube body, the dilator seat is arranged at the first connecting port, and the support wraps the dilator seat; the guide sheath wraps the dilator tube body. The rotating mechanism comprises a rotating handle, a cam ring and a steel wire, the rotating handle is arranged at the cam ring, one end of the steel wire is arranged at the cam ring, and the other end of the steel wire is arranged at the guide sheath; the cam ring is arranged at the support. When the rotating handle is rotated, the rotating handle drives the cam ring to rotate relative to the support, the cam ring retracts and releases the steel wire, and the steel wire adjusts the curvature of the guide sheath.
2. The ureteral sheath of claim 1, wherein, The rotating range of the rotating handle is 0-180°, and one side of the cam ring that retracts and releases the steel wire is provided with a groove.
3. The ureteral sheath of claim 1, wherein, The second connecting port is provided with a negative pressure hole, and a pressure relief sheath is arranged at the position corresponding to the negative pressure hole.
4. The ureteral sheath of claim 1, wherein, The support comprises an upper cover, a lower cover and a fixing block, the upper cover and the lower cover are arranged in a covering mode, and the fixing block is arranged between the upper cover and the lower cover and is used for fixing the relative position of the guide sheath and the support.
5. The ureteral sheath of claim 1, wherein, A damping washer is further arranged between the cam ring and the support.
6. The ureteral sheath of claim 1, wherein, The Y-shaped main body further comprises a third connecting port and a sealing cap corresponding to the third connecting port, and the third connecting port is used for connecting a surgical instrument.
7. The ureteral sheath of claim 6, wherein, The third connecting port is provided with a fixing groove used for connecting an auxiliary device.
8. The ureteral sheath of claim 1, wherein, The guide sheath further comprises a guide sheath seat used for connecting the guide sheath to the first connecting port.