Anti-reflux ureteral stent
By designing anti-counterflux ureter stents for anti-counterflux and drainage bags, the problem that existing ureter stents are prone to cause urine reflux is solved, and effective urine drainage and kidney protection are achieved.
Patent Information
- Application Number
- CN202420632467.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-29
AI Technical Summary
Existing ureteral stents are prone to cause urine reflux, leading to retrograde kidney infection and other problems.
An anti-counterfluent ureteral stent is designed, including a ureteral stent tube, an anti-counterfluent bag opening and drainage bag opening. Both ends of the ureteral stent tube are curved, and one end of the anti-counterfluent bag opening is fixed at the end of the ureteral stent tube and connected to it. The other end is open, and the drainage bag opening is open, one end of the drainage bag away from the ureteral stent tube is open, and the two sides are connected together, and several flow guide holes are evenly opened.
Effectively prevent urine reflux, reduce the risk of retrograde infection in the kidneys, and ensure smooth urine drainage.
Smart Images
Figure CN222445128U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ureteral stents, and in particular relates to an anti-reflux ureteral stent. Background Art
[0002] The ureter is the channel for transporting urine between the kidney and the bladder. Ureteral stents are one of the most commonly used instruments by urologists. The two coiled ends are placed in the kidney and bladder respectively, and the slender tube in the middle is placed in the ureter. The main purpose of inserting a ureteral stent is to drain urine and effectively relieve upper urinary tract obstruction caused by upper urinary tract stones, tumors, etc.
[0003] At present, the existing ureteral stents are mainly curled into a ring shape and a double J tube at both ends. Such a structure can prevent slippage, but the double J tube has a bidirectional drainage function. After using the double J tube, the bladder and ureteral anti-reflux mechanism disappears. When the bladder pressure is greater than the renal pelvis pressure, it is easy to cause urine in the bladder to reflux into the ureter and renal pelvis, leading to retrograde infection of the kidney and causing multiple injuries to the kidney.
[0004] Therefore, how to provide an anti-reflux ureteral stent to prevent urine reflux is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content
[0005] The technical problem to be solved by the utility model is that the ureteral stent in the prior art is mainly curled into a ring shape and a double J tube at both ends, which is easy to cause urine reflux, leading to retrograde infection of the kidney and other technical problems.
[0006] In order to solve the above technical problems, the utility model provides an anti-backflow ureteral stent, comprising: a ureteral stent tube, both ends of which are curved structures; an anti-backflow bag opening, which is made of a flexible material, one end of which is fixed to the end of the ureteral stent tube and connected to the ureteral stent tube, and the other end of which is open; a drainage bag opening, wherein one end of the drainage bag opening away from the ureteral stent tube is open, one side of the drainage bag opening is fitted and connected to the side of the anti-backflow bag opening, and the other side of the drainage bag opening is evenly provided with a plurality of diversion holes.
[0007] As a further technical solution of the present utility model, the hardness of the drainage bag opening is greater than the hardness of the anti-backflow bag opening.
[0008] As a further technical solution of the utility model, the anti-backflow bag opening is in a trumpet-shaped structure.
[0009] As a further technical solution of the utility model, the ureteral stent tube includes: a liquid inlet portion, which is a curved structure; a liquid outlet portion, which is a curved structure, and one end of the anti-backflow bag is fixed to the liquid outlet portion and communicated with the liquid outlet portion; a supporting portion, which is fixed between the liquid inlet portion and the liquid outlet portion and is integrally formed with the liquid inlet portion and the liquid outlet portion.
[0010] As a further technical solution of the utility model, it also includes: a sleeve, which is detachably sleeved on the outer wall of the support part.
[0011] As a further technical solution of the present invention, the hardness of the sleeve is greater than the hardness of the support portion.
[0012] As a further technical solution of the utility model, the cross section of the sleeve is a C-shaped structure.
[0013] As a further technical solution of the utility model, there are a plurality of sleeves, and the plurality of sleeves are arranged adjacent to each other along the length direction of the support portion.
[0014] As a further technical solution of the utility model, a plurality of first side holes are provided at intervals on the side wall of the liquid inlet portion along the length direction of the liquid inlet portion.
[0015] As a further technical solution of the utility model, a plurality of second side holes are provided at intervals on the side wall of the liquid outlet portion along the length direction of the liquid outlet portion.
[0016] Beneficial effects:
[0017] The utility model provides an anti-reflux ureteral stent, comprising a ureteral stent tube, an anti-reflux bag opening and a drainage bag opening. Both ends of the ureteral stent tube are in a curved structure, which can prevent the ureteral stent tube from falling off from the ureter; one end of the anti-reflux bag opening is fixed to the end of the ureteral stent tube and is connected to the ureteral stent tube, and the other end is open, so that urine at the end of the ureteral stent tube flows out from the open opening of the anti-reflux bag opening. When the pressure in the bladder is greater than that in the renal pelvis, and the urine in the bladder is too much to cause urine accumulation, the flexible material The open opening of the prepared anti-backflow bag mouth closes under the pressure of urine, thereby preventing urine from flowing back; the end of the drainage bag mouth away from the ureteral stent tube is open, one side of the drainage bag mouth is fitted and connected to the side of the anti-backflow bag mouth, and the other side is evenly provided with a plurality of diversion holes. When urine accumulates in the bladder, the urine that is about to flow back to the anti-backflow bag mouth can be drained from the open opening of the drainage bag mouth to the inside of the drainage bag mouth through the drainage bag mouth, and discharged through a plurality of diversion holes, thereby further preventing urine from flowing back into the ureteral stent tube.
[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the structure of an anti-reflux ureteral stent provided in an embodiment of the utility model;
[0021] Figure 2 A schematic diagram of a portion of the structure of an anti-reflux ureteral stent provided in an embodiment of the utility model;
[0022] Figure 3 A schematic diagram of the structure of the anti-backflow bag opening and the drainage bag opening provided in the embodiment of the utility model;
[0023] Figure 4 A schematic diagram of the structure of the sleeve provided in an embodiment of the utility model;
[0024] Figure 5 A cross-sectional view of a sleeve provided in an embodiment of the utility model.
[0025] Reference numerals:
[0026] 1. Ureteral stent; 11. Liquid inlet; 12. Liquid outlet; 13. Supporting part;
[0027] 2. Anti-reflux bag opening;
[0028] 3. Drainage bag opening;
[0029] 4. Diversion hole;
[0030] 5. Casing;
[0031] 6. First side hole;
[0032] 7. Second side hole. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] Embodiment 1
[0035] See also Figure 1-5 , this embodiment 1 provides an anti-reflux ureteral stent, including a ureteral stent tube 1, an anti-reflux bag port 2 and a drainage bag port 3, wherein both ends of the ureteral stent tube 1 are curved structures; the anti-reflux bag port 2 is made of a flexible material, one end of the anti-reflux bag port 2 is fixed to the end of the ureteral stent tube 1 and is connected to the ureteral stent tube 1, and the other end of the anti-reflux bag port 2 is open; the end of the drainage bag port 3 away from the ureteral stent tube 1 is open, one side of the drainage bag port 3 is fitted and connected to the side of the anti-reflux bag port 2, and the other side of the drainage bag port 3 is evenly provided with a plurality of diversion holes 4.
[0036] Specifically, the utility model provides an anti-reflux ureteral stent, comprising a ureteral stent tube 1, an anti-reflux bag port 2 and a drainage bag port 3. Both ends of the ureteral stent tube 1 are curved structures to prevent the ureteral stent tube 1 from falling off the ureter; one end of the anti-reflux bag port 2 is fixed to the end of the ureteral stent tube 1 and is connected to the ureteral stent tube 1, and the other end is open, so that urine at the end of the ureteral stent tube 1 flows out from the open opening of the anti-reflux bag port 2. When the pressure in the bladder is greater than that in the renal pelvis and the urine in the bladder is too much to cause urine accumulation, the flexible material The open end of the anti-backflow bag opening 2 made of the material is closed under the pressure of urine, thereby preventing urine from flowing back; the end of the drainage bag opening 3 away from the ureteral stent tube 1 is open, one side of the drainage bag opening 3 is fitted and connected to the side of the anti-backflow bag opening 2, and the other side is evenly provided with a plurality of diversion holes 4. When urine accumulates in the bladder, the urine that is about to flow back to the anti-backflow bag opening 2 can be drained from the open end of the drainage bag opening 3 to the inside of the drainage bag opening 3 through the drainage bag opening 3, and discharged through the plurality of diversion holes 4, further preventing urine from flowing back into the ureteral stent tube 1.
[0037] In some possible implementations, the hardness of the drainage bag opening 3 is greater than the hardness of the anti-backflow bag opening 2 .
[0038] This is because the hardness of the drainage bag opening 3 is greater than that of the anti-backflow bag opening 2, so that when there is too much urine in the bladder causing urine accumulation, the degree of closure of the open end of the drainage bag opening 3 is less than the degree of closure of the open end of the anti-backflow bag opening 2 under the pressure of urine, so that the urine that is about to flow back will first enter the drainage bag opening 3 and be discharged from the diversion hole 4, avoiding the urine from flowing back into the ureteral stent tube 1; and after the urine enters the drainage bag opening 3, the urine in the drainage bag opening 3 is easy to squeeze the side wall of the drainage bag 3, and then squeeze the side wall of the anti-backflow bag opening 2, further enhancing the degree of closure of the open end of the anti-backflow bag opening 2, and further preventing the urine from flowing back from the anti-backflow bag opening 2 to the ureteral stent tube 1.
[0039] In some possible implementations, the anti-backflow bag opening 2 is a trumpet-shaped structure.
[0040] This is because the anti-backflow bag opening 2 has a trumpet-shaped structure, which can increase the flow rate of urine and prevent stone debris from gathering and clogging. In addition, one end of the trumpet-shaped structure is narrow and the other end is wide, so that under the pressure of urine, the wide end (that is, the open end of the anti-backflow bag opening 2 in the present application) is easier to fit together.
[0041] In some possible embodiments, the ureteral stent tube 1 includes: a liquid inlet portion 11, which is a curved structure; a liquid outlet portion 12, which is a curved structure, and one end of the anti-backflow bag port 2 is fixed to the liquid outlet portion 12 and is connected to the liquid outlet portion 12; a support portion 13, which is fixed between the liquid inlet portion 11 and the liquid outlet portion 12 and is integrally formed with the liquid inlet portion 11 and the liquid outlet portion 12.
[0042] Those skilled in the art can understand that, during clinical use, when the ureteral stent tube 1 is placed in the patient's ureter, at this time, the liquid inlet portion 11 is located in the renal pelvis, and the liquid outlet portion 12 is located in the bladder, so that urine flows from the liquid inlet portion 11 through the supporting portion 13 between the liquid inlet portion 11 and the liquid outlet portion 12 in sequence, and flows out from the liquid outlet portion 12, thereby draining urine and effectively relieving upper urinary tract obstruction caused by upper urinary tract stones, tumors, etc.; the ureteral stent tube 1 can be prevented from falling off from the ureter by the curved structure of the liquid inlet portion 11 and the liquid outlet portion 12.
[0043] In some possible implementations, the further comprising: a sleeve 5 , wherein the sleeve 5 is detachably sleeved on the outer wall of the support portion 13 .
[0044] In some possible implementations, the hardness of the sleeve 5 is greater than the hardness of the support portion 13 .
[0045] This is because the sleeve 5 is detachably mounted on the outer wall of the support portion 13, and the hardness of the sleeve 5 is greater than that of the support portion 13. The support portion 13 can be supported by the sleeve 5 to enhance the hardness of the support portion 13, making it easier for the ureteral stent tube 1 to be inserted into the patient's ureter.
[0046] In some possible implementations, the cross-section of the sleeve 5 is a C-shaped structure.
[0047] Those skilled in the art can understand that the cross-section of the sleeve 5 is a C-shaped structure, that is, the side wall of the sleeve 5 is provided with an opening along the length direction of the sleeve 5, and the sleeve 5 can be sleeved on the outer wall of the support portion 13 through the opening, and the sleeve 5 can be peeled off from the support portion 13 by pushing the opening in the opposite direction of the opening, so that installation and disassembly are convenient.
[0048] In some possible implementations, there are multiple sleeves 5 , and the multiple sleeves 5 are adjacently arranged along the length direction of the support portion 13 .
[0049] Those skilled in the art can understand that a plurality of sleeves 5 are arranged adjacent to each other along the length direction of the support portion 13 , and the support portion 13 within a certain length range can be supported by the plurality of sleeves 5 .
[0050] In some possible implementations, a side wall of the liquid inlet portion 11 is provided with a plurality of first side holes 6 spaced apart along the length direction of the liquid inlet portion 11 .
[0051] Those skilled in the art will appreciate that a plurality of first side holes 6 are spaced apart on the side wall of the liquid inlet 11 along the length direction of the liquid inlet 11 , and the first side holes 6 can be used to increase the inflow of urine and prevent accumulation and blockage of stone debris.
[0052] In some possible implementations, a side wall of the liquid outlet portion 12 is provided with a plurality of second side holes 7 spaced apart along the length direction of the liquid outlet portion 12 .
[0053] Those skilled in the art will appreciate that a plurality of second side holes 7 are spaced apart on the side wall of the liquid outlet 12 along the length direction of the liquid outlet 12, and the second side holes 7 can be used to increase the outflow of urine and prevent stone fragments from clogging the urine.
[0054] Finally, it should be noted that the above embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiment of the utility model. They should all be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.
[0055] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A ureteral stent for preventing reflux, characterized in that: include: A ureteral stent tube, both ends of which are curved structures; An anti-backflow bag opening, wherein the anti-backflow bag opening is made of a flexible material, one end of the anti-backflow bag opening is fixed to the end of the ureteral stent tube and is connected to the ureteral stent tube, and the other end of the anti-backflow bag opening is open; A drainage bag opening, wherein one end of the drainage bag opening away from the ureteral stent tube is open, one side of the drainage bag opening is fitted and connected to the side of the anti-backflow bag opening, and the other side of the drainage bag opening is evenly provided with a plurality of diversion holes.
2. The anti-reflux ureteral stent according to claim 1, characterized in that: The hardness of the drainage bag opening is greater than the hardness of the anti-backflow bag opening.
3. The anti-reflux ureteral stent according to claim 2, characterized in that: The anti-backflow bag opening is in a trumpet-shaped structure.
4. The anti-reflux ureteral stent according to claim 3, characterized in that: The ureteral stent tube comprises: A liquid inlet portion, wherein the liquid inlet portion is a curved structure; A liquid outlet portion, wherein the liquid outlet portion is in a curved structure, and one end of the anti-backflow bag opening is fixed to the liquid outlet portion and communicated with the liquid outlet portion; A support portion is fixed between the liquid inlet portion and the liquid outlet portion and is integrally formed with the liquid inlet portion and the liquid outlet portion.
5. The anti-reflux ureteral stent according to claim 4, characterized in that: Also includes: A sleeve is detachably sleeved on the outer wall of the support portion.
6. The anti-reflux ureteral stent according to claim 5, characterized in that: The hardness of the sleeve is greater than the hardness of the support portion.
7. The anti-reflux ureteral stent according to claim 6, characterized in that: The cross section of the sleeve is a C-shaped structure.
8. The anti-reflux ureteral stent according to claim 7, characterized in that: The number of the sleeves is several, and the sleeves are arranged adjacent to each other along the length direction of the support portion.
9. The anti-reflux ureteral stent according to claim 8, characterized in that: A plurality of first side holes are provided at intervals on the side wall of the liquid inlet portion along the length direction of the liquid inlet portion.
10. The anti-reflux ureteral stent according to claim 9, characterized in that: A plurality of second side holes are provided at intervals on the side wall of the liquid outlet portion along the length direction of the liquid outlet portion.