Ureteral sheath and ureteral device

Abstract

The utility model relates to medical instrument technical field, concretely relates to a ureter sheath and ureter device. The ureter sheath includes sheath and limit piece. Among them, the sheath includes inner tube body and outer tube body, and the inner tube body is located in the outer tube body, and the inside of inner tube body is used for inserting endoscope, and one end of outer tube body is equipped with installation space, and one end of inner tube body is equipped with clamping part, and clamping part is installed in installation space to be used for clamping endoscope, and limit piece is located in installation space, and is movably connected with clamping part. Thus when endoscope is inserted into the inside of inner tube body, the clamping force of clamping part to endoscope can be adjusted by adjusting the position of limit piece in clamping part, so that clamping part clamps endoscope, so that endoscope can be stably fixed in inner tube body, to ensure that endoscope can smoothly pass through sheath and enter ureter and kidney, and avoid endoscope from shifting when detecting ureter and kidney, thereby improving the safety and reliability of operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a ureteral sheath and ureteral device. Background Technology

[0002] A ureteral sheath is an indispensable medical device in urological surgery, especially in the treatment of urinary stones. The ureteral sheath allows endoscopes and lithotripsy instruments to enter the ureter and kidney, enabling detailed examination and necessary surgical procedures.

[0003] In existing technologies, endoscopes are typically inserted directly into the ureteral sheath so that they can enter the ureter and kidney along with the sheath. However, in this method, the endoscope is simply inserted into the ureteral sheath, and it cannot be stably fixed inside the sheath, causing the endoscope to easily shift and affecting the endoscope's ability to examine the ureter and kidney. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a ureteral sheath and ureteral device to solve the problem that the endoscope cannot be stably fixed in the sheath in the prior art.

[0005] The ureteral sheath provided in this embodiment of the utility model includes: a sheath comprising an inner tube body and an outer tube body, wherein the inner tube body is disposed within the outer tube body and the interior of the inner tube body is used for inserting an endoscope; one end of the outer tube body is provided with an installation space; one end of the inner tube body is provided with a clamping part, which is installed within the installation space for clamping the endoscope; and a limiting member disposed within the installation space and movably connected to the clamping part to adjust the clamping force of the clamping part on the endoscope.

[0006] Optionally, the clamping part includes a first clamping arm and a second clamping arm disposed opposite to each other, the first clamping arm and the second clamping arm being used to clamp the endoscope, and the limiting member being sleeved outside the first clamping arm and the second clamping arm to clamp the first clamping arm and the second clamping arm.

[0007] Optionally, the outer peripheral surfaces of the first clamping arm and the second clamping arm are respectively provided with a first half thread and a second half thread, and the inner wall of the limiting member is provided with a threaded groove. The first half thread and the second half thread cooperate with the threaded groove so that when the limiting member moves toward the other end of the inner tube, the first clamping arm and the second clamping arm are clamped.

[0008] Optionally, the limiting member is provided with a pull tab, which is located on the side of the limiting member away from the clamping portion.

[0009] Optionally, the pull tab is rotatably connected to the limiting member so that the pull tab can be stored in the installation space.

[0010] Optionally, on the side of the installation space near the other end of the inner tube, the limiting member and the outer tube define a suction cavity, and the inner tube wall is provided with a suction channel extending toward the other end of the inner tube, the suction channel communicating with the suction cavity.

[0011] Optionally, the outer tube body is provided with a connecting tube, one end of which is connected to the suction cavity, and the other end is used to connect to the negative pressure suction device.

[0012] Optionally, the end of the ureteral sheath away from the limiting member is provided with a curved section, and the curved section is provided with a traction wire, which is clamped between the inner tube body and the outer tube body so that the curved section can be bent.

[0013] Optionally, the ureteral sheath further includes a sheath, which is fitted onto the side of the outer tube body away from the limiting member.

[0014] This utility model also discloses a ureteral device, including an endoscope, a negative pressure suction device, and a ureteral sheath as described above.

[0015] Compared with the prior art, the beneficial effects of the ureteral sheath provided by this utility model are as follows: The ureteral sheath of this utility model includes a sheath and a limiting member. The sheath includes an inner tube body and an outer tube body, with the inner tube body disposed within the outer tube body. The inner tube body is used for inserting an endoscope. One end of the outer tube body has an installation space, and one end of the inner tube body has a clamping part, which is installed within the installation space to clamp the endoscope. The limiting member is disposed within the installation space and is movably connected to the clamping part. Therefore, when the endoscope is inserted into the inner tube body, the clamping force of the clamping part on the endoscope can be adjusted by adjusting the position of the limiting member at the clamping part, so that the clamping part firmly clamps the endoscope, thereby stably fixing the endoscope within the inner tube body. This ensures that the endoscope can smoothly pass through the sheath into the ureter and kidney, and prevents displacement of the endoscope during examination of the ureter and kidney, thus improving the safety and reliability of the surgery. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. In the accompanying drawings:

[0017] Figure 1 This is a three-dimensional schematic diagram of the ureteral device provided in an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0019] Figure 3 yes Figure 1 Enlarged view of a portion of position B in the middle;

[0020] Figure 4 This is a partial cross-sectional view of the ureteral device provided in this embodiment of the utility model;

[0021] Figure 5 This is a partial three-dimensional schematic diagram of the inner tube body provided in this embodiment of the utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of the limiting member provided in an embodiment of the present utility model from one perspective;

[0023] Figure 7 This is a three-dimensional schematic diagram of the limiting member provided in another embodiment of the present utility model;

[0024] Figure 8 This is an exploded view of the curved segment provided in an embodiment of the present invention;

[0025] Figure 9 This is an exploded view of the sheath and protective sleeve provided in this embodiment of the utility model.

[0026] The labels for the attached figures are as follows:

[0027] 1000. Ureteral devices;

[0028] 100. Ureteral sheath; 1. Sheath; 11. Inner tube body; 111. Clamping part; 1111. First clamping arm; 1111a. First semi-thread; 1112. Second clamping arm; 1112a. Second semi-thread; 112. Suction channel; 12. Outer tube body; 121. Installation space; 1211. Suction cavity; 122. Connecting tube; 13. Bending section; 131. Traction wire; 2. Limiting element; 21. Threaded groove; 22. Pull tab;

[0029] 200. Endoscope; 300. Negative pressure suction device; 301. Air pressure regulating component. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] This utility model embodiment provides a ureteral sheath 100, such as Figures 1 to 8As shown, the ureteral sheath 100 of this utility model includes a sheath 1 and a limiting member 2. The sheath 1 includes an inner tube 11 and an outer tube 12. The inner tube 11 is disposed within the outer tube 12 and is used for inserting an endoscope 200. One end of the outer tube 12 has an installation space 121, and one end of the inner tube 11 has a clamping part 111. The clamping part 111 is installed within the installation space 121 to clamp the endoscope 200. The limiting member 2 is disposed within the installation space 121 and is movably connected to the clamping part 111 to adjust the clamping force of the clamping part 111 on the endoscope 200.

[0032] Specifically, the sheath 1 includes an inner tube 11 and an outer tube 12. The inner tube 11 is located inside the outer tube 12. The inner tube 11 is used to insert an endoscope 200 so that the endoscope 200 can enter the ureter and kidney of the human body along with the sheath 1, thereby examining the ureter and kidney. One end of the outer tube 12 is provided with an installation space 121, and one end of the inner tube 11 is provided with a clamping part 111. The clamping part 111 is installed in the installation space 121. The limiting member 2 is provided in the installation space 121 and is movably connected to the clamping part 111. Thus, when the endoscope 200 is inserted into the inner tube 11, the clamping force of the clamping part 111 on the endoscope 200 can be adjusted by adjusting the position of the limiting member 2 in the clamping part 111, so that the clamping part 111 clamps the endoscope 200, thereby making the endoscope 200 stably fixed in the inner tube 11. This ensures that the endoscope 200 can smoothly pass through the sheath 1 into the ureter and kidney, and avoids displacement of the endoscope 200 when examining the ureter and kidney, thereby improving the safety and reliability of the operation.

[0033] It is worth mentioning that the endoscope 200 can be pre-installed in the ureteral sheath 100 by the limiting component 2, so that the endoscope 200 and the ureteral sheath 100 can be assembled as a whole. Thus, during the operation, the step of inserting the endoscope 200 into the ureteral sheath 100 can be saved, and the integrated endoscope 200 and ureteral sheath 100 can be directly inserted into the ureter and kidney of the human body, thereby quickly realizing the examination of the ureter and kidney.

[0034] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the clamping part 111 includes a first clamping arm 1111 and a second clamping arm 1112 disposed opposite to each other. The first clamping arm 1111 and the second clamping arm 1112 are used to clamp the endoscope 200. The limiting member 2 is sleeved outside the first clamping arm 1111 and the second clamping arm 1112 to clamp the first clamping arm 1111 and the second clamping arm 1112.

[0035] Specifically, the first clamping arm 1111 and the second clamping arm 1112 are arranged opposite to each other, so that the first clamping arm 1111 and the second clamping arm 1112 can form a clamping force on opposite sides of the endoscope 200 to clamp the endoscope 200. The limiting member 2 is sleeved on the first clamping arm 1111 and the second clamping arm 1112 and can move along the first clamping arm 1111 and the second clamping arm 1112. Thus, by adjusting the position of the limiting member 2 in the clamping part 111, the limiting member 2 can clamp or release the first clamping arm 1111 and the second clamping arm 1112, so that the first clamping arm 1111 and the second clamping arm 1112 can clamp or release the endoscope 200, thereby stably fixing the endoscope 200 in the inner tube body 11 or removing it from the inner tube body 11.

[0036] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the outer peripheral surfaces of the first clamping arm 1111 and the second clamping arm 1112 are respectively provided with a first semi-thread 1111a and a second semi-thread 1112a. The inner wall of the limiting member 2 is provided with a threaded groove 21. The first semi-thread 1111a and the second semi-thread 1112a cooperate with the threaded groove 21 so that when the limiting member 2 moves toward the other end of the inner tube 11, the first clamping arm 1111 and the second clamping arm 1112 are clamped.

[0037] Specifically, the outer peripheral surfaces of the first clamping arm 1111 and the second clamping arm 1112 are respectively provided with a first semi-thread 1111a and a second semi-thread 1112a. The inner wall of the limiting member 2 is provided with a threaded groove 21. Thus, through the cooperation of the first semi-thread 1111a, the second semi-thread 1112a and the threaded groove 21, the limiting member 2 can rotate along the first clamping arm 1111 and the second clamping arm 1112 to adjust the distance between the clamping arms, thereby adjusting the clamping force between the first clamping arm 1111 and the second clamping arm 1112. Specifically, when the limiting member 2 moves toward the other end of the inner tube 11, the limiting member 2 can tighten the first clamping arm 1111 and the second clamping arm 1112 so that the first clamping arm 1111 and the second clamping arm 1112 come closer to each other, thereby clamping the endoscope 200; when the limiting member 2 moves in the opposite direction, the limiting member 2 gradually loosens the first clamping arm 1111 and the second clamping arm 1112 so that the first clamping arm 1111 and the second clamping arm 1112 move away from each other, thereby releasing the endoscope 200.

[0038] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the limiting member 2 is provided with a pull tab 22, which is located on the side of the limiting member 2 away from the clamping part 111.

[0039] Specifically, the limiting member 2 is provided with a pull tab 22, and the pull tab 22 is located on the side of the limiting member 2 away from the clamping part 111. The pull tab 22 allows medical personnel to easily adjust the limiting member 2, thereby adjusting the clamping force of the clamping part 111 on the endoscope 200. Preferably, the pull tab 22 is at least partially exposed outside the installation space 121, thereby making it easier for medical personnel to use the pull tab 22 and improving the convenience of operation.

[0040] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the pull tab 22 is rotatably connected to the limiting member 2 so that the pull tab 22 can be stored in the installation space 121.

[0041] Specifically, the pull tab 22 is rotatably connected to the limiting member 2. Thus, when the limiting member 2 needs to be adjusted, the pull tab 22 can be rotated so that at least part of the pull tab 22 is exposed outside the installation space 121, thereby facilitating the adjustment of the limiting member 2 by medical personnel. When the endoscope 200 is fixed in the inner tube body 11, the pull tab 22 can be rotated back into the installation space 121 for easy storage.

[0042] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, on the side of the installation space 121 near the other end of the inner tube 11, the limiting member 2 and the outer tube 12 define a suction cavity 1211. The inner tube 11 has a suction channel 112 extending toward the other end of the inner tube 11 inside the tube wall, and the suction channel 112 communicates with the suction cavity 1211.

[0043] Specifically, the limiting member 2 can separate the installation space 121. On the side of the installation space 121 near the other end of the inner tube 11, the limiting member 2 and the outer tube 12 can define the suction cavity 1211. The inner tube 11 has a suction channel 112 extending towards the other end of the inner tube 11. The suction channel 112 communicates with the suction cavity 1211. Thus, when a negative pressure is formed in the suction cavity 1211, the fluid in the kidney and the stone fragments formed after lithotripsy can be sucked into the suction cavity 1211 through the suction channel 112. In addition, the suction channel 112 is located inside the inner tube 11, which can avoid mutual interference between the suction channel 112 and the channel for inserting the endoscope 200 inside the inner tube 11.

[0044] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figures 3 to 5 As shown, the outer tube 12 has a connecting tube 122 on its wall. One end of the connecting tube 122 is connected to the suction cavity 1211, and the other end is used to connect to the negative pressure suction device 300.

[0045] Specifically, the outer tube 12 is provided with a connecting tube 122 on its wall. One end of the connecting tube 122 is connected to the suction chamber 1211, and the other end is used to connect to the negative pressure suction device 300. The negative pressure suction device 300 can generate negative pressure suction in the suction chamber 1211, thereby sucking the accumulated fluid in the kidney and the stone fragments formed after lithotripsy into the negative pressure suction device 300 through the suction channel 112, the suction chamber 1211 and the connecting tube 122.

[0046] It is worth mentioning that, such as Figure 1 As shown, the negative pressure suction device 300 is equipped with an air pressure regulator 301. Through the air pressure regulator 301, medical staff can flexibly adjust the amount of negative pressure suction generated by the negative pressure suction device 300 on the connecting tube 122 according to the actual situation and needs. This effectively avoids damage to the patient caused by excessive negative pressure suction, as well as poor cleaning effect of fluid accumulation and stone debris caused by insufficient negative pressure suction, thereby ensuring that the negative pressure suction effect is maintained at the best during the operation.

[0047] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 3 and Figure 8 As shown, the end of the ureteral sheath 100 away from the limiting member 2 is provided with a curved section 13, and the curved section 13 is provided with a traction wire 131. The traction wire 131 is clamped between the inner tube body 11 and the outer tube body 12 so that the curved section 13 can be bent.

[0048] Specifically, the end of the ureteral sheath 100 away from the limiting member 2 is provided with a curved section 13, and the curved section 13 is provided with a traction wire 131. The traction wire 131 is sandwiched between the inner tube body 11 and the outer tube body 12. The curved section 13 of the traction wire 131 can be bent so that the ureteral sheath 100 and the endoscope 200 can bend smoothly into the various renal calyces of the kidney.

[0049] Furthermore, as one specific implementation method in some embodiments of this utility model, such as Figure 9 As shown, the ureteral sheath 100 also includes a sheath 3, which is fitted onto the side of the outer tube body 12 away from the limiting member 2.

[0050] Specifically, the side of the sheath 1 closest to the limiting member 2 is the operating part of the ureteral sheath 100, which will not enter the ureter. The side of the sheath 1 furthest from the limiting member 2 is the part of the ureteral sheath 100 that is inserted into the ureter and kidney. The sheath 3 is fitted onto the side of the outer tube 12 furthest from the limiting member 2. Thus, before the ureteral sheath 100 is used, the sheath 3 can protect the part of the ureteral sheath 100 that is inserted into the ureter and kidney, preventing it from being affected or contaminated by the external environment, thereby avoiding infection of the ureter and kidney.

[0051] like Figure 1 As shown, this utility model also discloses a ureteral device 1000, which includes an endoscope 200, a negative pressure suction device 300, and a ureteral sheath 100 as described above. The beneficial effects of using the ureteral sheath 100 in the ureteral device 1000 have been described above when discussing the ureteral sheath 100, and will not be repeated here.

[0052] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A ureteral sheath, comprising: include: The sheath includes an inner tube and an outer tube, the inner tube being disposed within the outer tube and the interior of the inner tube being used for inserting an endoscope. One end of the outer tube is provided with an installation space, and one end of the inner tube is provided with a clamping part, which is installed within the installation space for clamping the endoscope. A limiting member is provided within the installation space and is movably connected to the clamping part to adjust the clamping force of the clamping part on the endoscope.

2. The ureteral sheath of claim 1, wherein, The clamping part includes a first clamping arm and a second clamping arm disposed opposite to each other. The first clamping arm and the second clamping arm are used to clamp the endoscope. The limiting member is sleeved outside the first clamping arm and the second clamping arm to clamp the first clamping arm and the second clamping arm.

3. The ureteral sheath of claim 2, wherein, The outer peripheral surfaces of the first clamping arm and the second clamping arm are respectively provided with a first half thread and a second half thread. The inner wall of the limiting member is provided with a threaded groove. The first half thread and the second half thread cooperate with the threaded groove so that when the limiting member moves toward the other end of the inner tube, the first clamping arm and the second clamping arm are clamped.

4. The ureteral sheath of claim 1, wherein, The limiting member is provided with a pull tab, which is located on the side of the limiting member away from the clamping part.

5. The ureteral sheath of claim 4, wherein, The pull tab is rotatably connected to the limiting member so that the pull tab can be stored in the installation space.

6. The ureteral sheath of any one of claims 1-5, wherein, On the side of the installation space near the other end of the inner tube, the limiting member and the outer tube define a suction cavity, and the inner tube wall is provided with a suction channel extending toward the other end of the inner tube, the suction channel communicating with the suction cavity.

7. The ureteral sheath of claim 6, wherein, The outer tube is provided with a connecting tube, one end of which is connected to the suction cavity, and the other end is used to connect to the negative pressure suction device.

8. The ureteral sheath of claim 6, wherein, The ureteral sheath has a curved section at the end away from the limiting member. The curved section is provided with a traction wire, which is clamped between the inner tube body and the outer tube body so that the curved section can be bent.

9. The ureteral sheath of claim 6, wherein, The ureteral sheath also includes a sheath, which is fitted onto the side of the outer tube body away from the limiting member.

10. A ureteral device, characterized by It includes an endoscope, a negative pressure suction device, and the ureteral sheath as described in any one of claims 1-9.

Images