Ureteral stent, traction mechanism, and ureteral stent system

Abstract

The present application provides a ureteral stent, a traction mechanism, and a ureteral stent system. The ureteral stent system comprises the ureteral stent and the traction mechanism. A urine guide channel is formed in the ureteral stent; the ureteral stent comprises a middle part, and a renal pelvis part and a bladder part which are arranged on the two opposite sides of the middle part; the renal pelvis part and the bladder part are both in a curved shape; the traction mechanism comprises a traction member and a sliding member; an accommodating recess is formed in the peripheral side wall of the traction member; at least part of the bladder part can be arranged in the accommodating recess; the traction member is further provided with a slide channel communicated with the accommodating recess; part of the sliding member is arranged in the slide channel; and the sliding member can slide relative to the traction member such that an opening of the accommodating recess can be closed or open. When at least part of the bladder part is arranged in the accommodating recess and the opening of the accommodating recess is closed, the ureteral stent is fixed to the traction member. Therefore, the ureteral stent can be pulled out of the body of a user along with the traction mechanism, such that the user does not need to have a cystoscopy operation for pulling out the ureteral stent, thereby enhancing the user experience.

Description

Ureteral stent, traction mechanism and ureteral stent system Technical Field

[0001] The present application belongs to the field of medical device technology, and specifically relates to a ureteral stent, a traction mechanism, and a ureteral stent system. Background Art

[0002] Before lithotripsy for kidney or ureteral stones, a ureteral stent is required. Typically, 2-4 weeks or longer after surgery, the doctor will perform another cystoscopy to remove the ureteral stent from the ureter and bladder. However, since cystoscopic removal is a second surgery, it increases the patient's physical and mental burden, occupies valuable medical resources, and increases medical insurance expenditures and the socioeconomic burden.

[0003] Summary of the Invention

[0004] In view of this, the first aspect of the present application provides a ureteral stent system, comprising:

[0005] A ureteral stent having a urine drainage channel therein, the ureteral stent comprising a middle portion, and a renal pelvis portion and a bladder portion disposed on opposite sides of the middle portion, the renal pelvis portion and the bladder portion both being curved;

[0006] A traction mechanism, the traction mechanism comprising a traction member and a sliding member, the traction member having an outer peripheral sidewall provided with a receiving groove, at least a portion of the bladder portion being capable of being disposed within the receiving groove, the traction member further having a sliding channel communicating with the receiving groove, a portion of the sliding member being disposed within the sliding channel, and the sliding member being capable of sliding relative to the traction member to close or open an opening of the receiving groove;

[0007] Wherein, when at least a portion of the bladder portion is disposed in the receiving groove and an opening of the receiving groove is closed, the ureteral stent is fixed to the traction member.

[0008] The ureteral stent system provided in the first aspect of the present application can securely connect the ureteral stent to the traction mechanism through the interaction of a traction member, a sliding member, and the ureteral stent. Specifically, a receiving groove for accommodating the bladder portion of the ureteral stent is provided on the outer peripheral sidewall of the traction member, and a sliding channel is provided that can communicate with the receiving groove. Furthermore, a sliding member is added, partially disposed within the sliding channel, so that the sliding member can slide relative to the traction member within the sliding channel. When the traction member is inserted into the user's urethra and the bladder portion of the ureteral stent is disposed within the receiving groove, the sliding member can be controlled to slide relative to the traction member to close the opening of the receiving groove, pressing the bladder portion within the receiving groove, thereby securely connecting the ureteral stent to the traction mechanism. Subsequently, the traction mechanism is simply removed, and the ureteral stent is removed from the user's body along with the traction mechanism, achieving the purpose of removing the ureteral stent. The user can avoid undergoing cystoscopy for removal, thereby improving the user experience.

[0009] The ureteral stent system satisfies one of the following conditions:

[0010] The sliding member can slide from the side wall of one side of the receiving groove to the side wall of the other side, so that the sliding member opens or closes the opening of the receiving groove;

[0011] The traction mechanism also includes a slide plate connected to the sliding member, and the slide plate can be arranged in the sliding channel. When the sliding member slides relative to the traction member, the slide plate is also driven to slide relative to the traction member, and slides from the side wall on one side of the receiving groove to the side wall on the other side, so that the slide plate opens or closes the opening of the receiving groove.

[0012] The traction mechanism further comprises a cover plate and a rotating member, the cover plate comprises a cover body and a rotating portion provided on one side of the cover body, the sliding member is connected to the rotating member, one end of the rotating member is rotatably connected to the cover body, and the other end is rotatably and slidably connected to the traction member, the rotating portion is rotatably and slidably connected to the traction member, and the cover body can cover the opening of the receiving groove;

[0013] When the sliding member slides relative to the pulling member, the rotating member rotates and slides relative to the pulling member, the rotating member rotates relative to the cover body, and the rotating portion rotates and slides relative to the pulling member, thereby causing the cover body to open or close the opening of the receiving groove.

[0014] When at least part of the bladder portion is located in the receiving groove and the opening of the receiving groove is closed, the traction mechanism has a traction direction for pulling the ureteral stent out of the user's body, and the end of the cover body away from the traction direction is inclined and protrudes from the outer peripheral side of the traction member.

[0015] Wherein, the traction mechanism further includes a cover plate connected to the sliding member, the receiving groove is provided with a step structure, and the cover plate is rotatably connected to the step surface of the step structure;

[0016] When the sliding member slides relative to the pulling member, the cover plate is driven to rotate relative to the pulling member, thereby closing the opening of the receiving groove.

[0017] Among them, the sliding part includes a sliding portion, a bending portion, and a connecting portion. Part of the sliding portion is arranged in the sliding channel, the connecting portion is connected to the cover plate, and the bending portion is bent to connect the sliding portion and the connecting portion so that the sliding direction of the sliding portion is opposite to the rotation direction of the cover plate.

[0018] The ureteral stent further comprises a first magnetic component provided on the bladder portion, and the traction mechanism further comprises a second magnetic component provided on the bottom wall of the receiving groove. The second magnetic component can attract the first magnetic component, thereby enabling the traction mechanism to magnetically connect the ureteral stent.

[0019] Wherein, the ureteral stent meets at least one of the following conditions:

[0020] The first magnetic member is provided at one end of the bladder portion away from the renal pelvis portion;

[0021] The bladder portion includes a connection end connected to the middle portion and a free end opposite to the connection end, and the first magnetic member is provided at the free end and located in the urine drainage channel;

[0022] The first magnetic member is coated on the outer peripheral side of the bladder portion.

[0023] Wherein, the ureteral stent meets at least one of the following conditions:

[0024] The first magnetic member is disposed in the urine drainage channel;

[0025] The first magnetic component and the bladder portion are an integrated structure.

[0026] In which, the traction mechanism also includes a cover plate, which includes a cover body capable of covering the opening of the receiving groove and a rotating part arranged on one side of the cover body. The traction mechanism also includes a third magnetic part arranged on the cover body. When the cover body closes the opening of the receiving groove, the third magnetic part and the second magnetic part attract each other.

[0027] Wherein, the traction mechanism further includes a detection module arranged on the bottom wall of the receiving groove, and the detection module is used to detect whether the bladder part is against the bottom wall of the receiving groove.

[0028] The ureteral stent further comprises a first magnetic member disposed on the bladder portion, the traction mechanism further comprises a second magnetic member disposed on the bottom wall of the receiving groove, the detection module comprises a pressure sensor and a prompter electrically connected to the pressure sensor, the pressure sensor is disposed on the bottom wall of the receiving groove, and the prompter is located outside the traction member;

[0029] When the first magnetic member and the second magnetic member are attracted to each other, the first magnetic member connects to the pressure sensor and causes the detection module to form a closed loop, thereby causing the pressure sensor to emit a holding signal, and the prompter can emit a prompt message according to the holding signal.

[0030] The traction member has a urinary catheterization channel running through one end of the traction member, and the other end of the traction member is provided with a urinary catheterization hole communicating with the urinary catheterization channel.

[0031] The pulling member includes a first portion and a second portion that are bent and connected along its axial direction, and the receiving groove is provided in the first portion.

[0032] A second aspect of the present application provides a ureteral stent having a urine drainage channel therein, comprising:

[0033] middle part;

[0034] a renal pelvis portion, disposed on one side of the middle portion, the renal pelvis portion being curved and used to transfer urine into the urine drainage channel;

[0035] a bladder portion, disposed on the other side of the middle portion, the bladder portion being curved and used to discharge the urine in the urine-guiding channel; and

[0036] The first magnetic component is arranged at the bladder part, and is used to attract the second magnetic component of the traction mechanism, so that the ureteral stent is magnetically connected to the traction mechanism.

[0037] The ureteral stent provided in the second aspect of the present application is configured by adding a first magnetic component to the bladder portion, which subsequently cooperates with the second magnetic component on the traction mechanism based on the principle of magnetic attraction. For example, when the traction mechanism is inserted into the bladder through the user's urethra and the second magnetic component of the traction mechanism and the first magnetic component of the bladder portion are close to each other, the first magnetic component and the second magnetic component will attract each other, causing the bladder portion of the ureteral stent to adhere to and magnetically connect to the traction mechanism, thereby firmly connecting the ureteral stent to the traction mechanism. Subsequently, the traction mechanism only needs to be removed, and the ureteral stent will be removed from the user's body along with the traction mechanism, thereby achieving the purpose of removing the ureteral stent.

[0038] In summary, the present application enables the ureteral stent to be removed from the user's body together with the traction mechanism through the provision of the first magnetic component, and the user can be exempted from undergoing cystoscopic examination and removal surgery, thereby improving the user experience.

[0039] Wherein, the ureteral stent meets at least one of the following conditions:

[0040] The first magnetic member is provided at one end of the bladder portion away from the renal pelvis portion;

[0041] The bladder portion includes a connection end connected to the middle portion and a free end opposite to the connection end, and the first magnetic member is provided at the free end and located in the urine drainage channel;

[0042] The first magnetic member is coated on the outer peripheral side of the bladder portion.

[0043] Wherein, the ureteral stent meets at least one of the following conditions:

[0044] The first magnetic member is disposed in the urine drainage channel;

[0045] The first magnetic component and the bladder portion are an integrated structure.

[0046] A third aspect of the present application provides a traction mechanism, comprising:

[0047] A traction member, wherein the outer peripheral side wall is provided with a receiving groove, and the traction member is further provided with a sliding channel connected to the receiving groove, and the receiving groove is used to receive at least part of the bladder portion of the ureteral stent;

[0048] A sliding member is partially disposed in the sliding channel, and the sliding member can slide relative to the traction member to close or open the opening of the receiving groove.

[0049] The traction mechanism provided in the third aspect of the present application is provided with a receiving groove for receiving the bladder portion of the ureteral stent on the outer peripheral side wall of the traction member, and a sliding channel that can be connected to the receiving groove is provided. And by adding a sliding member partially provided in the sliding channel, the sliding member can slide relative to the traction member in the sliding channel. When the traction member is inserted into the bladder from the user's urethra and the bladder portion of the ureteral stent is provided in the receiving groove, the sliding member can be controlled to slide relative to the traction member so that the opening of the receiving groove is closed, and the bladder portion is pressed in the receiving groove so that the ureteral stent is firmly connected to the traction mechanism. Then, it is only necessary to remove the traction mechanism, and the ureteral stent will be removed from the user's body together with the traction mechanism, thereby achieving the purpose of removing the ureteral stent.

[0050] In summary, the present application enables the ureteral stent to be removed from the user's body together with the traction mechanism through the mutual cooperation between the traction member and the sliding member, so that the ureteral stent can be automatically removed, and the user can be exempted from undergoing cystoscopic examination and removal surgery, thereby improving the user experience.

[0051] Wherein, the traction mechanism satisfies one of the following conditions:

[0052] The sliding member can slide from the side wall of one side of the receiving groove to the side wall of the other side, so that the sliding member opens or closes the opening of the receiving groove;

[0053] The traction mechanism also includes a slide plate connected to the sliding member, and the slide plate can be arranged in the sliding channel. When the sliding member slides relative to the traction member, the slide plate is also driven to slide relative to the traction member, and slides from the side wall on one side of the receiving groove to the side wall on the other side, so that the slide plate opens or closes the opening of the receiving groove.

[0054] The traction mechanism further comprises a cover plate and a rotating member, the cover plate comprises a cover body and a rotating portion provided on one side of the cover body, the sliding member is connected to the rotating member, one end of the rotating member is rotatably connected to the cover body, and the other end is rotatably and slidably connected to the traction member, the rotating portion is rotatably and slidably connected to the traction member, and the cover body can cover the opening of the receiving groove;

[0055] When the sliding member slides relative to the pulling member, the rotating member rotates and slides relative to the pulling member, the rotating member rotates relative to the cover body, and the rotating portion rotates and slides relative to the pulling member, thereby causing the cover body to open or close the opening of the receiving groove.

[0056] When at least part of the bladder portion is located in the receiving groove and the opening of the receiving groove is closed, the traction mechanism has a traction direction for pulling the ureteral stent out of the user's body, and the end of the cover body away from the traction direction is inclined and protrudes from the outer peripheral side of the traction member.

[0057] Wherein, the traction mechanism further includes a cover plate connected to the sliding member, the receiving groove is provided with a step structure, and the cover plate is rotatably connected to the step surface of the step structure;

[0058] When the sliding member slides relative to the pulling member, the cover plate is driven to rotate relative to the pulling member, thereby closing the opening of the receiving groove.

[0059] Among them, the sliding part includes a sliding portion, a bending portion, and a connecting portion. Part of the sliding portion is arranged in the sliding channel, the connecting portion is connected to the cover plate, and the bending portion is bent to connect the sliding portion and the connecting portion so that the sliding direction of the sliding portion is opposite to the rotation direction of the cover plate.

[0060] Wherein, the traction mechanism further includes a second magnetic component provided on the bottom wall of the receiving groove, and the second magnetic component is used to attract the first magnetic component on the bladder part, so that the traction mechanism is magnetically connected to the ureteral stent.

[0061] In which, the traction mechanism also includes a cover plate, which includes a cover body capable of covering the opening of the receiving groove, and the cover body can cover the opening of the receiving groove. The traction mechanism also includes a third magnetic part arranged on the cover body. When the cover body closes the opening of the receiving groove, the third magnetic part and the second magnetic part attract each other.

[0062] Wherein, the traction mechanism further includes a detection module arranged on the bottom wall of the receiving groove, and the detection module is used to detect whether the bladder part is against the bottom wall of the receiving groove.

[0063] The ureteral stent further comprises a first magnetic member disposed on the bladder portion, the traction mechanism further comprises a second magnetic member disposed on the bottom wall of the receiving groove, the detection module comprises a pressure sensor and a prompter electrically connected to the pressure sensor, the pressure sensor is disposed on the bottom wall of the receiving groove, and the prompter is located outside the traction member;

[0064] When the first magnetic member and the second magnetic member are attracted to each other, the first magnetic member connects to the pressure sensor and causes the detection module to form a closed loop, thereby causing the pressure sensor to emit a holding signal, and the prompter can emit a prompt message according to the holding signal.

[0065] The traction member has a urinary catheterization channel running through one end of the traction member, and the other end of the traction member is provided with a urinary catheterization hole communicating with the urinary catheterization channel.

[0066] The pulling member includes a first portion and a second portion that are bent and connected along its axial direction, and the receiving groove is provided in the first portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0068] FIG1 is a schematic structural diagram of a ureteral stent in one embodiment of the present application.

[0069] FIG2 is a schematic diagram of the cooperation between the ureteral stent and the traction mechanism shown in FIG1 .

[0070] FIG3 is a schematic structural diagram of a ureteral stent in another embodiment of the present application.

[0071] FIG4 is a schematic structural diagram of a ureteral stent 1 in another embodiment of the present application.

[0072] FIG5 is a schematic diagram of the three-dimensional structure of the traction mechanism in one embodiment of the present application.

[0073] FIG6 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving groove is opened in one embodiment of the present application.

[0074] FIG7 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving groove is closed in one embodiment of the present application.

[0075] FIG8 is a cross-sectional schematic diagram of the traction mechanism shown in FIG7 when it cooperates with the ureteral stent.

[0076] FIG9 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving groove is opened in another embodiment of the present application.

[0077] FIG10 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving groove is closed in another embodiment of the present application.

[0078] FIG11 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving groove is opened in another embodiment of the present application.

[0079] FIG12 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving groove is closed in another embodiment of the present application.

[0080] FIG13 is a cross-sectional schematic diagram of another embodiment of the present application showing the traction mechanism and the ureteral stent in cooperation.

[0081] FIG14 is a cross-sectional schematic diagram of another embodiment of the present application when the receiving slot opening of the traction mechanism is opened.

[0082] FIG15 is a cross-sectional schematic diagram of another embodiment of the present application when the receiving groove opening of the traction mechanism is closed.

[0083] FIG16 is a cross-sectional schematic diagram of a traction mechanism in one embodiment of the present application.

[0084] FIG17 is a cross-sectional schematic diagram of a traction mechanism in another embodiment of the present application.

[0085] FIG18 is a cross-sectional schematic diagram of a traction mechanism in another embodiment of the present application.

[0086] FIG19 is a cross-sectional schematic diagram of a traction mechanism in yet another embodiment of the present application.

[0087] FIG20 is a schematic structural diagram of a traction member in one embodiment of the present application.

[0088] Explanation of the reference numbers: Ureteral stent system-1', ureteral stent-1, traction mechanism-2, urine drainage channel-10, middle part-11, renal pelvis part-12, bladder part-13, connecting end-131, free end-132, first magnetic part-14, second magnetic part-20, traction part-30, first part-301, second part-302, receiving groove-31, sliding channel-32, urine catheter hole-33, urine catheter channel-34, step structure-35, step surface-350, sliding part-40, sliding part-401, bending part-402, connecting part-403, slide plate-41, cover plate-50, cover body-51, rotating part-52, rotating part-53, third magnetic part-60, detection module-70, pressure sensor-71, prompter-72. DETAILED DESCRIPTION

[0089] The following are preferred implementations of the present application. It should be noted that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

[0090] Before introducing the technical solutions of the present application, the technical problems in the related technologies are introduced in detail.

[0091] Kidney stones and ureteral stones are common and frequently occurring diseases in urology. When the stones are large, or larger than 1 cm, lithotripsy for kidney stones or ureteral stones is required. Lithotripsy for kidney stones or ureteral stones includes pyelolithotomy, kidney lithotomy, ureterolithotomy, percutaneous nephrolithotomy, flexible ureteroscopic pyelolithotomy, rigid ureteroscopic lithotripsy, etc. Before the lithotripsy for kidney stones or ureteral stones is completed, a ureteral stent needs to be inserted. Of course, in addition to kidney stone and ureteral stone surgery, hydronephrosis, ureteral stenosis, and extracorporeal shock wave lithotripsy sometimes also require the insertion of a ureteral stent. The implanted ureteral stent supports the ureteral wound, drains urine, prevents ureteral stenosis, and facilitates stone excretion. Typically, 2-4 weeks after surgery, the doctor will perform another cystoscopy to remove the ureteral stent from the ureter and bladder. However, cystoscopy is a second procedure, adding to the patient's physical and mental burden, using up valuable medical resources, and increasing medical insurance expenditures and socioeconomic burdens.

[0092] Currently, industry experts are exploring various approaches to address this problem. For example, a self-degradable ureteral stent has been developed, which theoretically degrades over a period of time. However, materials that can precisely control the degradation time have not yet been developed, so this solution has not yet entered clinical application. Therefore, the search for a new solution is urgent.

[0093] In view of this, in order to solve the above problems, the present application provides a ureteral stent. Please refer to Figures 1 and 2. Figure 1 is a schematic structural diagram of the ureteral stent in one embodiment of the present application. Figure 2 is a schematic diagram of the coordination between the ureteral stent and the traction mechanism shown in Figure 1. The ureteral stent 1 provided in this embodiment has a urine drainage channel 10. The ureteral stent 1 includes a middle part 11, a renal pelvis part 12, a bladder part 13, and a first magnetic part 14. Among them, the renal pelvis part 12 is provided on one side of the middle part 11, and the renal pelvis part 12 is curved and is used to transfer urine into the urine drainage channel 10. The bladder part 13 is provided on the other side of the middle part 11, and the bladder part 13 is curved and is used to discharge the urine in the urine drainage channel 10. The first magnetic part 14 is provided in the bladder part 13, and the first magnetic part 14 is used to attract each other with the second magnetic part 20 of the traction mechanism 2, so that the ureteral stent 1 is magnetically connected to the traction mechanism 2.

[0094] The ureteral stent 1 is a thin tube with looped bends at both ends. One end is positioned in the kidney, and the other in the bladder. The ureteral stent 1 is a hollow tube with a urinary drainage channel 10, which is used to drain urine from the kidney into the bladder, preventing hydronephrosis. Specifically, the ureteral stent 1 includes a central portion 11, and a renal pelvis portion 12 and a bladder portion 13 located on opposite sides of the central portion 11. The renal pelvis portion 12 is inserted into the kidney, and the bladder portion 13 is inserted into the bladder. The central portion 11 connects the renal pelvis 12 and bladder portions 13. Each of the central portion 11, the renal pelvis 12, and the bladder portion 13 contains urinary drainage channels 10. These channels are equipped with holes, allowing urine from the kidney to flow through the holes into the urinary drainage channels 10 in the renal pelvis 12 and then out into the bladder through the holes in the bladder portion 13. Because both the renal pelvis 12 and the bladder portion 13 are curved, the ureteral stent 1 is also known as a double-J stent or DJ stent. The material of the ureteral stent 1 includes but is not limited to plastic.

[0095] In addition to the above-mentioned components, the ureteral stent 1 may also include a first magnetic component 14. The first magnetic component 14 is a component that can be magnetically attracted and cooperated with other magnetic components, such as the second magnetic component 20. The first magnetic component 14 itself may not be magnetic, but after the first magnetic component 14 and the second magnetic component 20 are close to each other, the first magnetic component 14 can be magnetized by the second magnetic component 20 to generate magnetism, and finally the first magnetic component 14 and the second magnetic component 20 are magnetically attracted to each other. Optionally, the material of the first magnetic component 14 includes but is not limited to iron, cobalt, and nickel. Or in other embodiments, the first magnetic component 14 itself is magnetic and can be magnetically attracted to the second magnetic component 20. Optionally, the first magnetic component 14 includes but is not limited to a magnet. This embodiment is only schematically illustrated as the first magnetic component 14 itself is not magnetic.

[0096] In this embodiment, the first magnetic member 14 is arranged in the bladder portion 13, which can facilitate the subsequent removal of the ureteral stent 1 through the traction mechanism 2. As for the specific structure of the first magnetic member 14 and the bladder portion 13, this application will be introduced in detail later. As shown in Figure 2, when the traction mechanism 2 is inserted into the bladder from the user's urethra and the second magnetic member 20 of the traction mechanism 2 and the first magnetic member 14 of the bladder portion 13 are close to each other, the first magnetic member 14 and the second magnetic member 20 will attract each other, causing the bladder portion 13 of the ureteral stent 1 to adhere to and be magnetically connected to the traction mechanism 2, so that the ureteral stent 1 and the traction mechanism 2 are firmly connected together. Then, it is only necessary to remove the traction mechanism 2, and the ureteral stent 1 will be moved out of the user's body together with the traction mechanism 2, thereby achieving the purpose of removing the ureteral stent 1.

[0097] In summary, in this embodiment, the ureteral stent 1 can be removed from the user's body together with the traction mechanism 2 by setting the first magnetic member 14, so that the ureteral stent 1 can be automatically removed, and the user can be exempted from cystoscopic removal surgery, thereby improving the user experience.

[0098] Please refer to Figure 1 and Figure 3 together. Figure 3 is a schematic structural diagram of a ureteral stent in another embodiment of the present application. In this embodiment, the ureteral stent 1 satisfies at least one of the following conditions: the first magnetic member 14 is provided at one end of the bladder portion 13 away from the renal pelvis portion 12. And / or, the bladder portion 13 includes a connecting end 131 connected to the middle portion 11 and a free end 132 opposite to the connecting end 131, and the first magnetic member 14 is provided at the free end 132 and is located in the urine diversion channel 10. And / or, the first magnetic member 14 is coated on the outer peripheral side of the bladder portion 13.

[0099] This application provides multiple embodiments for the first magnetic member 14 and the bladder portion 13. As shown in FIG1 , in a first embodiment, the first magnetic member 14 can be disposed at the end of the bladder portion 13 away from the renal pelvis portion 12. In other words, the first magnetic member 14 is disposed at the lowest end of the bladder portion 13, that is, the first magnetic member 14 is disposed at the lowest end of the entire ureteral stent 1, facilitating magnetic connection between the first magnetic member 14 and the second magnetic member 20.

[0100] As shown in Figure 3, in the second embodiment, the bladder portion 13 includes two opposing ends: a connecting end 131 and a free end 132. The connecting end 131 is the end of the bladder portion 13 that connects to the middle portion 11, and the free end 132 is the end opposite the connecting end 131. In this embodiment, the first magnetic member 14 is positioned at the free end 132 within the urine drainage channel 10. This not only facilitates assembly of the first magnetic member 14 but also prevents it from damaging the user's body.

[0101] As shown in Figure 1, in the third embodiment, the first magnetic component 14 can be directly covered on the outer peripheral side of the bladder portion 13. For example, the first magnetic component 14 can be sleeved on the bladder portion 13 through the free end 132 of the bladder portion 13, or the first magnetic component 14 can be covered on the outer surface of the bladder portion 13 by coating or other methods, which can reduce the difficulty of assembling the first magnetic component 14 and better control the position of the first magnetic component 14 in the bladder portion 13.

[0102] It is worth noting that the ureteral stent 1 may only satisfy the first embodiment, or the second embodiment, or the third embodiment, or a combination of the first embodiment, the second embodiment, and the third embodiment, and the combined embodiments should also fall within the scope of protection of this application.

[0103] Please refer to Figures 3 and 4 . Figure 4 is a schematic diagram of the structure of a ureteral stent 1 in another embodiment of the present application. In this embodiment, the ureteral stent 1 satisfies at least one of the following conditions: the first magnetic member 14 is disposed within the urine drainage channel 10 . And / or the first magnetic member 14 and the bladder portion 13 are integrally formed.

[0104] The present application provides multiple embodiments for the first magnetic member 14 and the bladder portion 13. As shown in FIG3 , in the first embodiment, the first magnetic member 14 can be directly disposed inside the urine guide channel 10, thereby preventing the first magnetic member 14 from separating from the second magnetic member 20 and preventing the first magnetic member 14 from damaging the user's body.

[0105] As shown in FIG4 , in a second embodiment, the first magnetic member 14 can be an integral structure with the bladder portion 13. In other words, the first magnetic member 14 can be directly integrally formed on the bladder portion 13, or the first magnetic member 14 can be embedded in the bladder portion 13. It can also be understood that a portion of the bladder portion 13 is made of magnetic material, thereby simplifying the structure of the ureteral stent 1 and facilitating control of the position of the first magnetic member 14.

[0106] It is worth noting that the ureteral stent 1 may only satisfy the first embodiment, or the second embodiment, or a combination of the first embodiment and the second embodiment, and all of the above embodiments should fall within the scope of protection of this application.

[0107] In addition to the ureteral stent 1, the present application also provides a traction mechanism 2. Please refer to Figures 5 to 8. Figure 5 is a schematic diagram of the three-dimensional structure of the traction mechanism in one embodiment of the present application. Figure 6 is a schematic cross-sectional diagram of the traction mechanism when the opening of the receiving groove is opened in one embodiment of the present application. Figure 7 is a schematic cross-sectional diagram of the traction mechanism when the opening of the receiving groove is closed in one embodiment of the present application. Figure 8 is a schematic cross-sectional diagram of the traction mechanism shown in Figure 7 when it is matched with the ureteral stent. The traction mechanism 2 provided in this embodiment includes a traction member 30 and a sliding member 40. The outer peripheral side wall of the traction member 30 is provided with a receiving groove 31, and the traction member 30 is also provided with a sliding channel 32 connected to the receiving groove 31. The receiving groove 31 is used to accommodate at least a portion of the bladder portion 13 of the ureteral stent 1. Part of the sliding member 40 is provided in the sliding channel 32, and the sliding member 40 can slide relative to the traction member 30 to close or open the opening of the receiving groove 31.

[0108] The traction mechanism 2 is primarily used to secure the ureteral stent 1 and to pull and remove it. The traction mechanism 2 primarily comprises a traction member 30 and a sliding member 40. The traction member 30 can be a solid rod-like structure or a tubular structure with one end open and a hollow interior. For example, the traction member 30 includes a urinary catheterization channel 34 extending through one end of the traction member 30, and a urinary catheter hole 33 communicating with the urinary catheterization channel 34 at the other end. In this case, the traction member 30 can also be referred to as a urinary catheter. The end of the traction member 30 with the urinary catheter hole 33 is inserted into the bladder, while the open end of the traction member 30 is located outside the user's body. This allows excess urine in the user's bladder to be drained through the urinary catheter hole 33 and urinary catheterization channel 34, or fluid to be injected into the user's bladder to maintain a predetermined fluid content within the bladder. This allows the bladder portion 13 of the ureteral stent 1 to float within the bladder, effectively cooperating with the traction mechanism 2 and preventing excessive or insufficient fluid in the bladder, which could affect subsequent coordination between the traction mechanism 2 and the ureter. This embodiment is only schematically illustrated as the traction member 30 having the urinary catheter channel 34 and the urinary catheter hole 33. Optionally, one end of the traction member 30 is in an arc shape to facilitate insertion of the traction member 30 into the bladder.

[0109] A receiving groove 31 is provided on the outer peripheral side wall of the traction member 30. The receiving groove 31 is used to receive at least part of the bladder portion 13 of the ureteral stent 1, that is, the bladder portion 13 can be entirely located within the receiving groove 31, or part of the bladder portion 13 can be located within the receiving groove 31, and the remaining part can be located outside the receiving groove 31. In any case, the middle portion 11 and the renal pelvis portion 12 are located outside the receiving groove 31. It is worth noting that when the traction member 30 has a urinary catheterization channel 34, the receiving groove 31 is not connected to the urinary catheterization channel 34, that is, the receiving groove 31 has a bottom wall. In addition, when the circumferential shape of the traction member 30 is circular, elliptical or quasi-circular, the receiving groove 31 only has two side walls opposite to each other along the axial direction of the traction member 30, and may or may not have a side wall in the radial direction.

[0110] In addition to the receiving groove 31, the traction member 30 may also include a sliding channel 32 connected to the receiving groove 31. Specifically, the sliding channel 32 may connect to the receiving groove 31 by penetrating the bottom wall or side wall of the receiving groove 31. This embodiment is merely illustrated by the sliding channel 32 penetrating the side wall of the receiving groove 31. This embodiment does not limit which side wall the sliding channel 32 penetrates. Optionally, the other end of the sliding channel 32 penetrates the end wall of the traction member 30 where the urinary catheterization channel 34 is provided, facilitating the subsequent insertion and control of the sliding member 40.

[0111] The slider 40 is a component longer than the traction member 30. One end of the slider 40 can be inserted into the sliding channel 32 and slide relative to the traction member 30 to close or open the opening of the receiving groove 31. As to how the slider 40 closes or opens the opening of the receiving groove 31, this application will be described in detail later. Optionally, the slider 40 includes but is not limited to a guide wire. When the traction member 30 is inserted into the bladder of the user through the urethra and the bladder portion 13 of the ureteral stent 1 is located in the receiving groove 31, the slider 40 located outside the traction member 30 can be controlled to close the opening of the receiving groove 31. The bladder portion 13 is pressed into the receiving groove 31, that is, the lower end of the ureteral stent 1 is locked in the receiving groove 31 to form a tight connection, thereby firmly connecting the ureteral stent 1 to the traction mechanism 2. Subsequently, the traction mechanism 2 only needs to be removed, and the ureteral stent 1 will be removed from the user's body along with the traction mechanism 2, thereby achieving the purpose of removing the ureteral stent 1.

[0112] In summary, in this embodiment, the ureteral stent 1 can be removed from the user's body together with the traction mechanism 2 through the mutual cooperation of the traction member 30 and the sliding member 40, so that the ureteral stent 1 can be automatically removed, and the user can be exempted from cystoscopic examination and removal surgery, thereby improving the user experience.

[0113] Please refer to Figures 6-7 and 9-10. Figure 9 is a schematic cross-sectional view of the traction mechanism when the opening of the receiving slot is open, according to another embodiment of the present application. Figure 10 is a schematic cross-sectional view of the traction mechanism when the opening of the receiving slot is closed, according to another embodiment of the present application. In this embodiment, the traction mechanism 2 satisfies one of the following conditions: the sliding member 40 is capable of sliding from one sidewall of the receiving slot 31 to the other sidewall, thereby causing the sliding member 40 to open or close the opening of the receiving slot 31. And / or, the traction mechanism 2 further includes a slide plate 41 connected to the sliding member 40. The slide plate 41 can be disposed within the sliding channel 32. When the sliding member 40 slides relative to the traction member 30, the slide plate 41 also slides relative to the traction member 30 and slides from one sidewall of the receiving slot 31 to the other sidewall, thereby causing the slide plate 41 to open or close the opening of the receiving slot 31.

[0114] The present application provides a variety of embodiments for controlling the opening and closing of the receiving groove 31 by the sliding member 40. As shown in FIG6-FIG7, in the first embodiment, the opening of the receiving groove 31 can be closed or opened by the sliding member 40. For example, the sliding member 40 can also pass through the side wall of the receiving groove 31 on the basis of sliding relative to the traction member 30, and slide from the side wall on one side of the receiving groove 31 to the side wall on the other side. When the sliding member 40 abuts against the side wall on the other side, the sliding member 40 can close the opening of the receiving groove 31, thereby locking the bladder part 13 of the ureteral stent 1. When the sliding member 40 slides in the opposite direction, the opening of the receiving groove 31 can be opened, thereby allowing the bladder part 13 of the ureteral stent 1 to enter the receiving groove 31. The use of the sliding member 40 itself can simplify the structure of the traction mechanism 2 and reduce the difficulty of sliding control.

[0115] As shown in Figures 9 and 10, in a second embodiment, a slide plate 41 connected to the sliding member 40 can be added. The slide plate 41 is also positioned within the sliding channel 32. When the sliding member 40 slides relative to the pulling member 30, it drives the slide plate 41 to slide relative to the pulling member 30. The slide plate 41 can also slide from one sidewall of the receiving groove 31 to the other sidewall. When the slide plate 41 abuts against the other sidewall, it closes the opening of the receiving groove 31, thereby locking the bladder portion 13 of the ureteral stent 1. When the slide plate 41 slides in the opposite direction, it opens the opening of the receiving groove 31, allowing the bladder portion 13 of the ureteral stent 1 to enter the receiving groove 31. The slide plate 41 can further enhance the sealing effect. For example, by designing the size of the slide plate 41 so that its width is the same as that of the receiving groove 31, the opening of the receiving groove 31 is completely closed.

[0116] It is worth noting that in this embodiment, the traction mechanism 2 shell only satisfies the first embodiment, or only satisfies the second embodiment.

[0117] Please refer to Figures 11 and 12. Figure 11 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving slot is open, according to another embodiment of the present application. Figure 12 is a cross-sectional schematic diagram of the traction mechanism when the opening of the receiving slot is closed, according to another embodiment of the present application. In this embodiment, the traction mechanism 2 further includes a cover plate 50 and a rotating member 53. The cover plate 50 includes a cover body 51 and a rotating portion 52 provided on one side of the cover body 51. The sliding member 40 is connected to the rotating member 53. One end of the rotating member 53 is rotatably connected to the cover body 51, and the other end is rotatably and slidably connected to the traction member 30. The rotating portion 52 is rotatably and slidably connected to the traction member 30. The cover body 51 can cover the opening of the receiving slot 31. When the sliding member 40 slides relative to the traction member 30, the rotating member 53 rotates and slides relative to the traction member 30. The rotating member 53 rotates relative to the cover body 51, and the rotating portion 52 rotates and slides relative to the traction member 30, thereby causing the cover body 51 to open or close the opening of the receiving slot 31.

[0118] In addition to the above two embodiments, the present application also provides a third embodiment, by adding a cover plate 50 and a rotating member 53, wherein the cover plate 50 includes a cover body 51 and a rotating portion 52, the cover body 51 is mainly used to cover and close the opening of the receiving groove 31, and the rotating portion 52 is used to connect the cover plate 50 to other components. Specifically, the sliding member 40 is connected to the rotating member 53, one end of the rotating member 53 is rotated to connect to the cover body 51, and the other end is rotated and slidably connected to the traction member 30, that is, rolling connection to the traction member 30, and at the same time, the rotating portion 52 is also rolling connection to the traction member 30. For example, the other end of the rotating member 53 is rolling connected to the side wall of the receiving groove 31, and the rotating portion 52 is rolling connected to the bottom wall of the receiving groove 31.

[0119] When the sliding member 40 slides relative to the traction member 30, the rotating member 53 can rotate and slide relative to the traction member 30, and the rotating member 53 rotates relative to the cover body 51. The rotation of the cover body 51 causes the rotating portion 52 to rotate and slide relative to the traction member 30, thereby causing the cover body 51 to open or close the opening of the receiving groove 31. Specifically, as shown in Figures 11 and 12, when the sliding member 40 is pulled outward, it can drive the rotating member 53 to rotate counterclockwise, and one end of the rotating member 53 slides from right to left during the rotation process. The other end of the rotating member 53 pulls the cover body 51 to rotate counterclockwise while rotating relative to the cover body 51. The rotation of the cover body 51 drives the rotating portion 52 to rotate relative to the traction member 30 and slide from left to right, ultimately achieving the opening of the receiving groove 31. Conversely, by the same token, this embodiment will not be repeated here, and ultimately the opening of the receiving groove 31 can be closed.

[0120] In summary, the cover 50 , the rotating member 53 , and the sliding member 40 cooperate with each other to ultimately control the cover 51 to open or close the opening of the receiving groove 31 in the form of rotation.

[0121] Optionally, when the traction mechanism 2 has not yet been inserted into the user's body, the cover body 51 can be used to close the opening of the receiving groove 31. After the traction mechanism 2 is inserted into the bladder, the sliding member 40 is used to open the opening of the receiving groove 31. After approaching the ureteral stent 1, the sliding member 40 is used to close the opening of the receiving groove 31 and fix the ureteral stent 1, and finally the traction mechanism 2 is removed.

[0122] Optionally, when the cover body 51 closes the opening of the receiving groove 31, the top surface of the cover body 51 facing away from the bottom wall of the receiving groove 31 is flush with the outer peripheral side surface of the traction member 30, which not only improves the flatness of the surface of the traction mechanism 2, but also prevents the traction mechanism 2 from scratching the user inside the user's body.

[0123] Optionally, a gap is provided between the cover 51 and the sidewall of the receiving groove 31 to avoid interference between the cover plate 50 and the traction member 30. Further optionally, a rounded chamfer is provided at the corner between the cover 51 and the receiving groove 31 to further prevent scratching the user.

[0124] Optionally, whether it is the first embodiment, the second embodiment, or the third embodiment, when the opening of the receiving groove 31 is closed, the sliding member 40, the slide plate 41, or the cover body 51 can press the bladder part 13 or the middle part 11 of the ureteral stent 1 against the side wall of the receiving groove 31, further improving the fixing effect of the traction mechanism 2.

[0125] Please refer to Figure 13, which is a cross-sectional schematic diagram of the traction mechanism and ureteral stent in another embodiment of the present application. In this embodiment, when at least a portion of the bladder portion 13 is located within the receiving groove 31 and the opening of the receiving groove 31 is closed, the traction mechanism 2 has a traction direction to pull the ureteral stent 1 out of the user's body, and the end of the cover 51 facing away from the traction direction is inclined and protrudes from the outer peripheral side of the traction member 30.

[0126] When at least a portion of the bladder portion 13 is located in the receiving groove 31 and the opening of the receiving groove 31 is closed, the traction mechanism 2 can fix the ureteral stent 1. The traction mechanism 2 can then be moved out of the user's body, that is, the traction mechanism 2 can be pulled out. At this time, the outward direction can be understood as the traction direction (as shown in D in Figure 13). In addition, this embodiment can make the end of the cover body 51 away from the traction direction tilted and protruding from the outer peripheral side of the traction member 30, so that the cover body 51 covers the bladder portion 13 while its tilted and protruding end is located at the end away from the traction direction. In other words, the end of the cover body 51 away from the traction direction is close to the other end of the traction member 30. In this way, when the traction mechanism 2 is pulled out, the protrusion of the cover body 51 can be pulled out along the traction direction to prevent the protrusion of the cover body 51 from damaging the user's body.

[0127] Please refer to Figures 14 and 15. Figure 14 is a cross-sectional schematic diagram of another embodiment of the present application when the receiving slot opening of the traction mechanism is opened. Figure 15 is a cross-sectional schematic diagram of another embodiment of the present application when the receiving slot opening of the traction mechanism is closed. In this embodiment, the traction mechanism 2 also includes a cover plate 50 connected to the sliding member 40, the receiving slot 31 is provided with a step structure 35, and the cover plate 50 is rotatably connected to the step surface 350 of the step structure 35. When the sliding member 40 slides relative to the traction member 30, it drives the cover plate 50 to rotate relative to the traction member 30, thereby closing the opening of the receiving slot 31.

[0128] This embodiment also incorporates a stepped structure 35 within the receiving groove 31, and allows the cover plate 50 connected to the sliding member 40 to be rotatably connected to the stepped surface 350 of the stepped structure 35. This allows the sliding member 40 to directly control the cover plate 50, simplifying the structure of the traction mechanism 2. As the sliding member 40 slides relative to the traction member 30, the sliding member 40 drives the cover plate 50 to rotate relative to the traction member 30, thereby closing the opening of the receiving groove 31. In other words, the cover plate 50 rotates 180°, and the upper and lower surfaces are reversed, thereby closing the opening of the receiving groove 31.

[0129] In this embodiment, the sliding member 40 includes a sliding portion 401, a bent portion 402, and a connecting portion 403. The sliding portion 401 is partially disposed within the sliding channel 32. The connecting portion 403 connects to the cover plate 50. The bent portion 402 bends and connects the sliding portion 401 and the connecting portion 403, so that the sliding direction of the sliding portion 401 is opposite to the rotation direction of the cover plate 50. This embodiment utilizes a J-shaped sliding member 40 to ensure that the sliding portion 401 is pulled outward when the receiving slot 31 is closed, facilitating operation. Furthermore, when the receiving slot 31 is closed, the sliding portion 401 slides outward (i.e., leftward) relative to the pulling member 30, and the cover plate 50 rotates inward clockwise, i.e., rightward. Similarly, when the receiving slot 31 is opened, the sliding portion 401 slides inward (i.e., rightward) relative to the pulling member 30, and the cover plate 50 rotates outward counterclockwise, i.e., leftward. This can better capture and fix the internal ureteral stent 1, thereby improving traction efficiency.

[0130] Optionally, in this embodiment, the opening of the receiving groove 31 is in an open state before the traction mechanism 2 is inserted into the user's body, and the opening of the receiving groove 31 is closed after the traction mechanism 2 is inserted into the user's body and captures the ureteral stent 1.

[0131] Please refer to Figures 2 and 16 , which is a cross-sectional schematic diagram of a traction mechanism in one embodiment of the present application. In this embodiment, the traction mechanism 2 further includes a second magnetic member 20 disposed on the bottom wall of the receiving groove 31 . The second magnetic member 20 is configured to attract the first magnetic member 14 on the bladder portion 13 , thereby magnetically connecting the traction mechanism 2 to the ureteral stent 1 .

[0132] In addition to the above-mentioned components, the traction mechanism 2 may also include a second magnetic component 20. The second magnetic component 20 is a component that can be magnetically attracted and cooperated with other magnetic components, such as the first magnetic component 14. The second magnetic component 20 itself may not be magnetic, but after the second magnetic component 20 is close to the first magnetic component 14, the second magnetic component 20 can be magnetized by the first magnetic component 14 to generate magnetism, and finally the first magnetic component 14 and the second magnetic component 20 are magnetically attracted to each other. Optionally, the material of the second magnetic component 20 includes but is not limited to iron, cobalt, and nickel. Or in other embodiments, the second magnetic component 20 itself is magnetic and can be magnetically attracted to the first magnetic component 14. Optionally, the second magnetic component 20 includes but is not limited to a permanent magnet or an electromagnet. When the second magnetic component 20 is an electromagnet, the size of the second magnetic component 20 can be reduced, making it easier to be set on the bottom wall of the receiving groove 31. This embodiment is only schematically illustrated by the second magnetic component 20 itself being magnetic. In this embodiment, the second magnetic member 20 is disposed on the bottom wall of the receiving groove 31 , which can facilitate magnetic connection of the bladder portion 13 of the ureteral stent 1 to the receiving groove 31 , thereby better fixing the ureteral stent 1 .

[0133] In summary, the present application can further improve the effect of the traction mechanism 2 in fixing the ureteral stent 1 by combining the magnetic connection with the closed opening of the receiving groove 31 .

[0134] Please refer to Figure 17, which is a cross-sectional schematic diagram of a traction mechanism in another embodiment of the present application. In this embodiment, the traction mechanism 2 further includes a cover plate 50, which includes a cover body 51 capable of covering the opening of the receiving slot 31. The cover body 51 is capable of covering the opening of the receiving slot 31. The traction mechanism 2 further includes a third magnetic member 60 disposed on the cover body 51. When the cover body 51 closes the opening of the receiving slot 31, the third magnetic member 60 and the second magnetic member 20 attract each other.

[0135] In addition to the second magnetic member 20, a third magnetic member 60 may be provided on the cover 51. The third magnetic member 60 is the same as the first magnetic member 14 and the second magnetic member 20, and may be non-magnetic or magnetic. This embodiment will not be described in detail here. In this embodiment, the third magnetic member 60 may be provided on the cover 51, for example, on a side of the cover 51 close to the bottom wall of the receiving groove 31. In this way, when the cover 51 closes the opening of the receiving groove 31, the second magnetic member 20 and the third magnetic member 60 can be brought close to each other, and the third magnetic member 60 and the second magnetic member 20 can be attracted to each other, thereby further improving the fixing effect of the traction mechanism 2.

[0136] Optionally, the first magnetic component 14 and the third magnetic component 60 are non-magnetic, and the second magnetic component 20 is magnetic.

[0137] Please refer to Figure 18, which is a cross-sectional view of a traction mechanism in another embodiment of the present application. In this embodiment, the traction mechanism 2 further includes a detection module 70 disposed on the bottom wall of the receiving groove 31. The detection module 70 is used to detect whether the bladder portion 13 is abutting against the bottom wall of the receiving groove 31.

[0138] In addition to the aforementioned components, the traction mechanism 2 may also include a detection module 70. By placing the detection module 70 on the bottom wall of the receiving groove 31, it can detect whether the bladder portion 13 is abutting against the bottom wall of the receiving groove 31, thereby determining whether the traction mechanism 2 has secured the ureteral stent 1. For example, the pressure of the bottom wall can be detected to determine whether the bladder portion 13 is abutting against the bottom wall of the receiving groove 31. When the bladder portion 13 abuts the bottom wall of the receiving groove 31, the bladder portion 13 exerts pressure on the bottom wall, and the detection module 70 can detect the corresponding pressure, thereby determining that the bladder portion 13 has abutted the bottom wall; otherwise, it has not. The provision of the detection module 70 allows the traction mechanism 2 to better secure the ureteral stent 1.

[0139] Of course, in other embodiments, the movement of the traction member 30 in the bladder can be controlled by guiding the visualization of the traction member 30 , for example, a camera can be added to the other end of the traction member 30 , so that the traction member 30 can be closer to and fix the ureteral stent 1 more easily.

[0140] Please refer to Figure 19, which is a cross-sectional schematic diagram of a traction mechanism in another embodiment of the present application. In this embodiment, the ureteral stent 1 also includes a first magnetic member 14 provided on the bladder portion 13, and the traction mechanism 2 also includes a second magnetic member 20 provided on the bottom wall of the receiving groove 31. The detection module 70 includes a pressure sensor 71 and a prompter 72 electrically connected to the pressure sensor 71. The pressure sensor 71 is provided on the bottom wall of the receiving groove 31, and the prompter 72 is located outside the traction member 30. When the first magnetic member 14 and the second magnetic member 20 are attracted to each other, the first magnetic member 14 connects to the pressure sensor 71 and forms a closed loop with the detection module 70, so that the pressure sensor 71 sends a resistance signal, and the prompter 72 can send a prompt message according to the resistance signal.

[0141] The detection module 70 of this embodiment can be set as a pressure sensor 71, which is set on the bottom wall of the receiving groove 31, and a prompter 72 electrically connected to the pressure sensor 71 is set outside the traction member 30. When the first magnetic member 14 does not abut the bottom wall of the receiving groove 31, the detection module 70 is in a disconnected state and the pressure sensor 71 cannot detect the pressure signal. Only when the first magnetic member 14 and the second magnetic member 20 are attracted to each other, the first magnetic member 14 abuts against the bottom wall of the receiving groove 31, so the first magnetic member 14 will apply pressure to the bottom wall of the receiving groove 31. At the same time, the first magnetic member 14 made of materials such as iron, cobalt and nickel has a conductive function, which can form a closed loop of the detection module 70 so that the pressure sensor 71 sends a holding signal. Finally, the prompter 72 can send prompt information in the form of sound, light, electricity, etc. according to the holding signal to remind the user that the traction mechanism has successfully captured the ureteral stent 1 and has been firmly connected.

[0142] In summary, the first magnetic part 14 is not only used for magnetic attraction cooperation with the second magnetic part 20, but also used to connect the detection module 70. Only the first magnetic part 14 can make the detection module 70 form a closed loop, and other components cannot form a closed loop, so that even if other components contact the bottom wall of the receiving groove 31, the detection module cannot form a closed loop, thereby preventing the problem of false triggering.

[0143] Please refer to Figure 20, which is a schematic diagram of the structure of the traction member in one embodiment of the present application. In this embodiment, the traction member 30 includes a first portion 301 and a second portion 302 that are bent and connected along its axial direction, and the receiving groove 31 is provided in the first portion 301. In other words, the first portion 301 is the portion used to be inserted into the user's bladder and to approach and fix the ureteral stent 1, and at least part of the second portion 302 can be located outside the user's body. When the first portion 301 is inserted into the user's bladder, the second portion 302 can be rotated to drive the first portion 301 to rotate, thereby increasing the rotation area of ​​the first portion 301, making it easier for the first portion 301 to approach and fix the ureteral stent 1.

[0144] Referring again to Figures 1-20, in addition to the ureteral stent 1 and the traction mechanism 2, the present application also provides a ureteral stent system 1' comprising the ureteral stent 1 and the traction mechanism 2. The ureteral stent system 1' provided in this embodiment includes the ureteral stent 1 and the traction mechanism 2. The ureteral stent 1 has a urine drainage channel 10 therein. The ureteral stent 1 includes a middle portion 11, and a renal pelvis portion 12 and a bladder portion 13 disposed on opposite sides of the middle portion 11. Both the renal pelvis portion 12 and the bladder portion 13 are curved. The traction mechanism 2 includes a traction member 30 and a sliding member 40. The outer sidewall of the traction member 30 is provided with a receiving groove 31. At least a portion of the bladder portion 13 can be disposed within the receiving groove 31. The traction member 30 also has a sliding channel 32 communicating with the receiving groove 31. A portion of the sliding member 40 is disposed within the sliding channel 32. The sliding member 40 can slide relative to the traction member 30 to close or open the opening of the receiving groove 31. When at least a portion of the bladder portion 13 is disposed in the receiving groove 31 and the opening of the receiving groove 31 is closed, the ureteral stent 1 is fixed to the traction member 30 .

[0145] This embodiment provides a ureteral stent system 1' comprising a ureteral stent 1 and a traction mechanism 2. The details of the ureteral stent 1 and traction mechanism 2, their coordination, and the accompanying drawings have been described in detail above in this application and will not be repeated in this embodiment. The coordination of the traction member 30, the sliding member 40, and the ureteral stent 1 securely connects the ureteral stent 1 and the traction mechanism 2. The ureteral stent 1 can be removed from the user's body along with the traction mechanism 2, eliminating the need for a cystoscopic removal procedure and improving the user experience.

[0146] In addition, the specific structure and related drawings of the ureteral stent 1 and the traction mechanism 2 have been described in detail above in this application, and will not be repeated here in this embodiment. For example:

[0147] In this embodiment, the ureteral stent system 1' satisfies one of the following conditions: the sliding member 40 can slide from one sidewall of the receiving groove 31 to the other sidewall, thereby causing the sliding member 40 to open or close the opening of the receiving groove 31. Alternatively, the traction mechanism 2 further includes a slide plate 41 connected to the sliding member 40. The slide plate 41 can be disposed within the sliding channel 32. When the sliding member 40 slides relative to the traction member 30, the slide plate 41 is also driven to slide relative to the traction member 30 and slide from one sidewall of the receiving groove 31 to the other sidewall, thereby causing the slide plate 41 to open or close the opening of the receiving groove 31.

[0148] In this embodiment, the traction mechanism 2 further includes a cover plate 50 and a rotating member 53. The cover plate 50 includes a cover body 51 and a rotating portion 52 provided on one side of the cover body 51. The sliding member 40 is connected to the rotating member 53. One end of the rotating member 53 is rotatably connected to the cover body 51, and the other end is rotatably and slidably connected to the traction member 30. The rotating portion 52 is rotatably and slidably connected to the traction member 30. The cover body 51 can cover the opening of the receiving groove 31.

[0149] When the sliding member 40 slides relative to the traction member 30, the rotating member 53 rotates and slides relative to the traction member 30, the rotating member 53 rotates relative to the cover body 51, and the rotating portion 52 rotates and slides relative to the traction member 30, thereby causing the cover body 51 to open or close the opening of the receiving groove 31.

[0150] In this embodiment, the traction mechanism 2 further includes a cover plate 50 connected to the sliding member 40. The receiving groove 31 is provided with a step structure 35, and the cover plate 50 is rotatably connected to the step surface 350 of the step structure 35. When the sliding member 40 slides relative to the traction member 30, the cover plate 50 is driven to rotate relative to the traction member 30, thereby closing the opening of the receiving groove 31.

[0151] In this embodiment, the sliding part 40 includes a sliding portion 401, a bending portion 402, and a connecting portion 403. Part of the sliding portion 401 is arranged in the sliding channel 32, the connecting portion 403 is connected to the cover plate 50, and the bending portion 402 is bent to connect the sliding portion 401 and the connecting portion 403, so that the sliding direction of the sliding portion 401 is opposite to the rotation direction of the cover plate 50.

[0152] In this embodiment, when at least a portion of the bladder portion 13 is disposed in the receiving groove 31 and the opening of the receiving groove 31 is closed, the traction mechanism 2 has a traction direction for pulling the ureteral stent 1 out of the user's body, and the end of the cover body 51 away from the traction direction is inclined and protrudes from the outer peripheral side surface of the traction member 30.

[0153] In this embodiment, the ureteral stent 1 also includes a first magnetic component 14 arranged on the bladder part 13, and the traction mechanism 2 also includes a second magnetic component 20 arranged on the bottom wall of the receiving groove 31. The second magnetic component 20 can attract the first magnetic component 14, so that the traction mechanism 2 is magnetically connected to the ureteral stent 1.

[0154] In this embodiment, the ureteral stent 1 satisfies at least one of the following conditions: the first magnetic member 14 is disposed at the end of the bladder portion 13 facing away from the renal pelvis portion 12. Furthermore, the bladder portion 13 includes a connecting end 131 connected to the middle portion 11 and a free end 132 opposite the connecting end 131, and the first magnetic member 14 is disposed at the free end 132 and located within the urine drainage channel 10. Furthermore, the first magnetic member 14 is coated on the outer periphery of the bladder portion 13.

[0155] In this embodiment, the ureteral stent 1 satisfies at least one of the following conditions: the first magnetic member 14 is disposed in the urine drainage channel 10 ; and / or the first magnetic member 14 and the bladder portion 13 are integrally formed.

[0156] In this embodiment, the traction mechanism 2 also includes a cover plate 50, which includes a cover body 51 capable of covering the opening of the receiving groove 31 and a rotating part 52 arranged on one side of the cover body 51. The traction mechanism 2 also includes a third magnetic member 60 arranged on the cover body 51. When the cover body 51 closes the opening of the receiving groove 31, the third magnetic member 60 and the second magnetic member 20 attract each other.

[0157] In this embodiment, the traction mechanism 2 further includes a detection module 70 disposed on the bottom wall of the receiving groove 31 . The detection module 70 is used to detect whether the bladder portion 13 is against the bottom wall of the receiving groove 31 .

[0158] In this embodiment, the ureteral stent 1 further includes a first magnetic member 14 disposed on the bladder portion 13, the traction mechanism 2 further includes a second magnetic member 20 disposed on the bottom wall of the receiving groove 31, and the detection module 70 includes a pressure sensor 71 and a prompter 72 electrically connected to the pressure sensor 71. The pressure sensor 71 is disposed on the bottom wall of the receiving groove 31, and the prompter 72 is located outside the traction member 30. When the first magnetic member 14 and the second magnetic member 20 are attracted to each other, the first magnetic member 14 connects to the pressure sensor 71 and forms a closed loop with the detection module 70, thereby causing the pressure sensor 71 to emit a holding signal, and the prompter 72 can emit a prompt message based on the holding signal.

[0159] In this embodiment, the traction member 30 has a urinary catheter channel 34 running through one end of the traction member 30 , and the other end of the traction member 30 is provided with a urinary catheter hole 33 communicating with the urinary catheter channel 34 .

[0160] In this embodiment, the pulling member 30 includes a first portion 301 and a second portion 302 that are bent and connected along the axial direction thereof, and the receiving groove 31 is provided in the first portion 301 .

[0161] It is worth noting that only part of the content is listed above. The specific structure of the ureteral stent 1 and the traction mechanism 2 and the mutual cooperation relationship between the ureteral stent 1 and the traction mechanism 2 that are not listed are also applicable to the ureteral stent system 1' and should also fall within the protection scope of the ureteral stent system 1'.

[0162] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0163] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0164] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to connection, detachable connection, or integration. They may refer to mechanical connection or electrical connection. They may refer to direct connection or indirect connection through an intermediary. They may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0165] The above details the contents provided in the embodiments of the present application, and illustrates and describes the principles and embodiments of the present application. These explanations are only intended to help understand the method and core concept of the present application. However, the contents of this specification should not be construed as limiting the present application. Those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents.

Claims

1. A ureteral stent system, characterized in that: include: A ureteral stent, wherein the ureteral stent has a urine-guiding channel therein, and the ureteral stent comprises a middle portion, and a renal pelvis portion and a bladder portion disposed on opposite sides of the middle portion, wherein the renal pelvis portion and the bladder portion are both curved; A traction mechanism, the traction mechanism comprising a traction member and a sliding member, the traction member having an outer peripheral side wall provided with a receiving groove, at least a portion of the bladder portion can be disposed in the receiving groove, the traction member further having a sliding channel connected to the receiving groove, a portion of the sliding member being disposed in the sliding channel, and the sliding member being able to slide relative to the traction member so that the opening of the receiving groove is closed or opened; Wherein, when at least a portion of the bladder portion is disposed in the receiving groove and an opening of the receiving groove is closed, the ureteral stent is fixed to the traction member.

2. The ureteral stent system according to claim 1, characterized in that: The ureteral stent system satisfies one of the following conditions: The sliding member can slide from the side wall of one side of the receiving groove to the side wall of the other side, so that the sliding member opens or closes the opening of the receiving groove; The traction mechanism also includes a slide plate connected to the sliding member, and the slide plate can be arranged in the sliding channel. When the sliding member slides relative to the traction member, the slide plate is also driven to slide relative to the traction member, and slides from the side wall on one side of the receiving groove to the side wall on the other side, so that the slide plate opens or closes the opening of the receiving groove.

3. The ureteral stent system according to claim 1, characterized in that: The traction mechanism further includes a cover plate and a rotating member, the cover plate includes a cover body and a rotating part provided on one side of the cover body, the sliding member is connected to the rotating member, one end of the rotating member is rotatably connected to the cover body, and the other end is rotatably and slidably connected to the traction member, the rotating part is rotatably and slidably connected to the traction member, and the cover body can cover the opening of the receiving groove; When the sliding member slides relative to the pulling member, the rotating member rotates and slides relative to the pulling member, the rotating member rotates relative to the cover body, and the rotating part rotates and slides relative to the pulling member, so that the cover body opens or closes the opening of the receiving groove.

4. The ureteral stent system according to claim 1, characterized in that: The traction mechanism further comprises a cover plate connected to the sliding member, the receiving groove is provided with a step structure, and the cover plate is rotatably connected to the step surface of the step structure; When the sliding member slides relative to the pulling member, the cover plate is driven to rotate relative to the pulling member, thereby closing the opening of the receiving groove.

5. The ureteral stent system according to claim 3, characterized in that: The sliding member includes a sliding portion, a bending portion, and a connecting portion. Part of the sliding portion is arranged in the sliding channel, the connecting portion is connected to the cover plate, and the bending portion is bent to connect the sliding portion and the connecting portion so that the sliding direction of the sliding portion is opposite to the rotation direction of the cover plate.

6. The ureteral stent system according to claim 3 or 4, characterized in that: When at least part of the bladder portion is disposed in the receiving groove and the opening of the receiving groove is closed, the traction mechanism has a traction direction for traction of the ureteral stent out of the user's body, and one end of the cover body away from the traction direction is inclined and protrudes from the outer peripheral side of the traction member.

7. The ureteral stent system according to claim 3 or 4, characterized in that: The ureteral stent also includes a first magnetic component arranged on the bladder part, and the traction mechanism also includes a second magnetic component arranged on the bottom wall of the receiving groove. The second magnetic component can attract the first magnetic component to each other, so that the traction mechanism is magnetically connected to the ureteral stent.

8. The ureteral stent system according to claim 7, characterized in that: The ureteral stent meets at least one of the following conditions: The first magnetic member is disposed at one end of the bladder portion away from the renal pelvis portion; The bladder portion includes a connection end connected to the middle portion and a free end opposite to the connection end, and the first magnetic member is disposed at the free end and located in the urine drainage channel; The first magnetic member is coated on the outer peripheral side of the bladder portion.

9. The ureteral stent system according to claim 7, characterized in that: The ureteral stent meets at least one of the following conditions: The first magnetic member is disposed in the urine-guiding channel; The first magnetic component and the bladder portion are an integrated structure.

10. The ureteral stent system according to claim 7, characterized in that: The traction mechanism also includes a cover plate, which includes a cover body capable of covering the opening of the receiving groove and a rotating part arranged on one side of the cover body. The traction mechanism also includes a third magnetic part arranged on the cover body. When the cover body closes the opening of the receiving groove, the third magnetic part and the second magnetic part attract each other.

11. The ureteral stent system according to claim 1, characterized in that: The traction mechanism further comprises a detection module arranged on the bottom wall of the receiving groove, and the detection module is used to detect whether the bladder part is against the bottom wall of the receiving groove.

12. The ureteral stent system according to claim 11, characterized in that: The ureteral stent further includes a first magnetic member disposed on the bladder portion, the traction mechanism further includes a second magnetic member disposed on the bottom wall of the receiving groove, the detection module includes a pressure sensor and a prompter electrically connected to the pressure sensor, the pressure sensor is disposed on the bottom wall of the receiving groove, and the prompter is located outside the traction member; When the first magnetic member is attracted to the second magnetic member, the first magnetic member connects to the pressure sensor and causes the detection module to form a closed loop, so that the pressure sensor sends a holding signal, and the prompter can send a prompt message according to the holding signal.

13. The ureteral stent system according to claim 1, characterized in that: The traction member is provided with a urinary catheterization channel penetrating one end of the traction member, and the other end of the traction member is provided with a urinary catheterization hole communicating with the urinary catheterization channel.

14. The ureteral stent system according to claim 1, characterized in that: The traction member comprises a first portion and a second portion which are bent and connected along the axial direction thereof, and the receiving groove is arranged in the first portion.

15. A ureteral stent, characterized in that: The ureteral stent has a urine drainage channel, including: middle part; A renal pelvis portion, disposed on one side of the middle portion, the renal pelvis portion is curved and is used to transfer urine into the urine-guiding channel; a bladder portion, disposed on the other side of the middle portion, the bladder portion being curved and used to discharge the urine in the urine-guiding channel; and The first magnetic component is arranged at the bladder part, and is used to attract the second magnetic component of the traction mechanism, so that the ureteral stent is magnetically connected to the traction mechanism.

16. The ureteral stent according to claim 15, characterized in that: The ureteral stent meets at least one of the following conditions: The first magnetic member is disposed at one end of the bladder portion away from the renal pelvis portion; The bladder portion includes a connection end connected to the middle portion and a free end opposite to the connection end, and the first magnetic member is disposed at the free end and located in the urine drainage channel; The first magnetic member is coated on the outer peripheral side of the bladder portion.

17. The ureteral stent according to claim 15, characterized in that: The ureteral stent meets at least one of the following conditions: The first magnetic member is disposed in the urine-guiding channel; The first magnetic component and the bladder portion are an integrated structure.

18. A traction mechanism, characterized in that: include: A traction member, the outer peripheral side wall of which is provided with a receiving groove, the traction member is further provided with a sliding channel connected to the receiving groove, and the receiving groove is used to receive at least part of the bladder part of the ureteral stent; A sliding member is partially disposed in the sliding channel, and the sliding member can slide relative to the traction member so that the opening of the receiving groove is closed or opened.

19. The traction mechanism according to claim 18, characterized in that: The traction mechanism satisfies one of the following conditions: The sliding member can slide from the side wall of one side of the receiving groove to the side wall of the other side, so that the sliding member opens or closes the opening of the receiving groove; The traction mechanism also includes a slide plate connected to the sliding member, and the slide plate can be arranged in the sliding channel. When the sliding member slides relative to the traction member, the slide plate is also driven to slide relative to the traction member, and slides from the side wall on one side of the receiving groove to the side wall on the other side, so that the slide plate opens or closes the opening of the receiving groove.

20. The traction mechanism according to claim 18, characterized in that: The traction mechanism further includes a cover plate and a rotating member, the cover plate includes a cover body and a rotating part provided on one side of the cover body, the sliding member is connected to the rotating member, one end of the rotating member is rotatably connected to the cover body, and the other end is rotatably and slidably connected to the traction member, the rotating part is rotatably and slidably connected to the traction member, and the cover body can cover the opening of the receiving groove; When the sliding member slides relative to the pulling member, the rotating member rotates and slides relative to the pulling member, the rotating member rotates relative to the cover body, and the rotating part rotates and slides relative to the pulling member, so that the cover body opens or closes the opening of the receiving groove.

21. The traction mechanism according to claim 18, characterized in that: The traction mechanism further comprises a cover plate connected to the sliding member, the receiving groove is provided with a step structure, and the cover plate is rotatably connected to the step surface of the step structure; When the sliding member slides relative to the pulling member, the cover plate is driven to rotate relative to the pulling member, thereby closing the opening of the receiving groove.

22. The traction mechanism according to claim 21, characterized in that: The sliding member includes a sliding portion, a bending portion, and a connecting portion. Part of the sliding portion is arranged in the sliding channel, the connecting portion is connected to the cover plate, and the bending portion is bent to connect the sliding portion and the connecting portion so that the sliding direction of the sliding portion is opposite to the rotation direction of the cover plate.

23. The traction mechanism according to claim 20 or 21, characterized in that: When at least part of the bladder portion is disposed in the receiving groove and the opening of the receiving groove is closed, the traction mechanism has a traction direction for traction of the ureteral stent out of the user's body, and one end of the cover body away from the traction direction is inclined and protrudes from the outer peripheral side of the traction member.

24. The traction mechanism according to claim 20 or 21, characterized in that: The traction mechanism further comprises a second magnetic member arranged on the bottom wall of the receiving groove, and the second magnetic member is used to attract the first magnetic member on the bladder part, so that the traction mechanism is magnetically connected to the ureteral stent.

25. The traction mechanism according to claim 24, characterized in that: The traction mechanism also includes a cover plate, which includes a cover body capable of covering the opening of the receiving groove, and the cover body is capable of covering the opening of the receiving groove. The traction mechanism also includes a third magnetic member arranged on the cover body, and when the cover body closes the opening of the receiving groove, the third magnetic member and the second magnetic member attract each other.

26. The traction mechanism according to claim 18, characterized in that: The traction mechanism further comprises a detection module arranged on the bottom wall of the receiving groove, and the detection module is used to detect whether the bladder part is against the bottom wall of the receiving groove.

27. The traction mechanism according to claim 26, characterized in that: The ureteral stent further includes a first magnetic member disposed on the bladder portion, the traction mechanism further includes a second magnetic member disposed on the bottom wall of the receiving groove, the detection module includes a pressure sensor and a prompter electrically connected to the pressure sensor, the pressure sensor is disposed on the bottom wall of the receiving groove, and the prompter is located outside the traction member; When the first magnetic member is attracted to the second magnetic member, the first magnetic member connects to the pressure sensor and causes the detection module to form a closed loop, so that the pressure sensor sends a holding signal, and the prompter can send a prompt message according to the holding signal.

28. The traction mechanism according to claim 18, characterized in that: The traction member is provided with a urinary catheterization channel penetrating one end of the traction member, and the other end of the traction member is provided with a urinary catheterization hole communicating with the urinary catheterization channel.

29. The traction mechanism according to claim 18, characterized in that: The traction member comprises a first portion and a second portion which are bent and connected along the axial direction thereof, and the receiving groove is arranged in the first portion.

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