Surgical operation-free ureteral stent convenient to remove

Abstract

The utility model relates to technical field of ureteral stent solves the technical problem that ureteral stent still needs special operation to take out, especially to a kind of ureteral stent of operation-free convenient to take out, including as the support base ureteral stent body, the ureteral stent body outside is provided with the limiting component for increasing its limiting capacity, the ureteral stent body bottom end is provided with the convenient component for taking out from the patient's body, the convenient component includes the fixed seat fixedly connected in the bottom of ureteral stent body both sides, the utility model discloses because the setting of convenient component, the process of ureteral stent body can be taken out from human body inside more convenient, and will not hurt patient urethra, so that patient oneself can also take out, need not suffer the harm of secondary operation, can also alleviate the burden of doctor simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of ureteral stents, and in particular to a ureteral stent that is easy to remove without surgery. Background Technology

[0002] Ureteral stents are commonly used in urology to insert into the ureter. One end is placed in the renal pelvis, and the other end is placed in the bladder. They offer advantages such as relieving ureteral obstruction, dilating the ureter, preventing ureteral stricture, facilitating stone expulsion, and promoting postoperative recovery. However, current ureteral stent placement procedures require local anesthesia and cystoscopy to locate and remove the stent after placement. This not only prolongs the entire surgical period and increases the workload for doctors, but also forces patients to undergo a second surgery. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a non-surgical, easily removable ureteral stent, solving the technical problem of requiring specialized surgery for ureteral stent removal and thus reducing the number of surgeries required.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a non-surgical ureteral stent that is easy to remove, comprising a ureteral stent body as a supporting base, a limiting component for increasing its limiting ability is provided on the outer side of the ureteral stent body, and a convenient removal component for facilitating its removal from the patient's body is provided at the bottom end of the ureteral stent body.

[0005] The removable assembly includes a fixing seat fixedly connected to the bottom of both sides of the ureteral stent body. A correction rope is connected to the middle of the bottom end of the fixing seat. Pull-out ropes are fixedly connected to the bottom ends of the two correction ropes. A guide seat is fixedly connected to the bottom end of the pull-out rope. A flushing groove is opened on the guide seat near the end of the pull-out rope. A delay fixing seat is fixedly connected to the lower outer side of the ureteral stent body. A fixing capsule is fixedly connected to the lower outer side of the ureteral stent body.

[0006] Preferably, the fixing capsule is wrapped around the outside of the fixing seat, the correction rope, the pull rope, the guide seat, and the time-delay fixing seat.

[0007] Preferably, the delay fixing seat is wrapped around the outside of the guide seat, and the edges and corners of the fixing seat, guide seat, delay fixing seat and fixing capsule are all arc-shaped.

[0008] Preferably, the limiting component includes a plurality of pairs of perforations equidistantly formed on the ureteral stent body, and a return tube is fixedly connected to both the top and bottom ends of the ureteral stent body. A magnetic metal ring is fixedly connected to both the outer side of the ureteral stent body near the return tube and the fixed capsule end.

[0009] Preferably, the two bends of the two bends are in opposite directions, and the two correction ropes are of the same length.

[0010] Preferably, the outer side of the ureteral stent body is provided with a chitosan coating, and the outer side of the chitosan coating is provided with a biodegradable coating.

[0011] By employing the above technical solution, this utility model provides a non-surgical, easily removable ureteral stent, which has at least the following beneficial effects:

[0012] 1. Due to the design of the easy-to-remove component, this utility model makes the process of removing the ureteral stent body from the human body more convenient and will not damage the patient's urethra. It also allows the patient to remove it himself without suffering the harm of a second surgery, and at the same time reduces the burden on doctors.

[0013] 2. Due to the setting of the limiting component, the two bends in this utility model can limit the ureteral stent body relative to the inner wall of the human urethra, thereby preventing it from moving inside the urethra due to the flow of urine. The perforation can allow the urine flowing through the inner wall of the ureteral stent body to overflow into the urethra, avoiding the situation where the outer wall of the ureteral stent body is in contact with the urethral wall for a long time and thus causing adhesion.

[0014] 3. Due to the chitosan coating and biodegradable coating, this utility model can degrade along with the convenient component during degradation. Chitosan is a deacetylated product of chitin, which is natural, non-toxic, antibacterial, and anticancer. It is biocompatible and biodegradable, and can play an anti-inflammatory and antibacterial role during degradation. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the through-hole opening structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the magnetic metal ring mounting structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixed capsule installation structure of this utility model;

[0021] Figure 5 This utility model Figure 4A magnified structural diagram at point A;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the ureteral stent body of this utility model;

[0023] Figure 7 This is a schematic diagram of the installation structure of the time-delay fixing seat of this utility model;

[0024] Figure 8 This is a schematic diagram of the pull-out rope installation structure of this utility model;

[0025] Figure 9 This is a schematic diagram of the installation structure of the correction rope in this utility model.

[0026] Figure 10 This utility model Figure 9 A magnified structural diagram at point B.

[0027] In the diagram: 1. Ureteral stent body; 2. Chitosan coating; 3. Limiting component; 31. Through-hole; 32. Magnetic metal ring; 33. Backbend tube;

[0028] 4. Accessible component; 41. Fixing base; 42. Calibration rope; 43. Pull-out rope; 44. Guide seat; 45. Impact groove; 46. Delay fixing seat; 47. Fixing capsule; 5. Biodegradable coating. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Currently, after the ureteral stent is placed surgically, the patient needs local anesthesia, and the stent needs to be located and removed using a cystoscope. This not only prolongs the entire surgical period and increases the workload of the doctor, but also requires the patient to undergo another surgery. Please refer to [link / reference needed]. Figures 1-10This embodiment provides a non-surgical, easily removable ureteral stent, solving the technical problem of requiring specialized surgery for ureteral stent removal. The device includes a ureteral stent body 1 as a supporting base, a limiting component 3 on the outer side of the ureteral stent body 1 to increase its positioning ability, and a convenient removal component 4 at the bottom end of the ureteral stent body 1 to facilitate its removal from the patient's body. The limiting component 3 enhances the positioning ability of the ureteral stent body 1 within the urethra, while the convenient removal component 4 makes it easier to remove the ureteral stent body 1 from the urethra.

[0032] In the current use of urethral stents, the stent needs to be placed in the patient's body for a period of time. After the patient's condition recovers, the stent must be removed at the hospital. This not only increases the burden on doctors but also forces patients to undergo a second surgery. To solve this problem, a convenient removal component 4 is proposed. The convenient removal component 4 includes a fixing seat 41 fixedly connected to the bottom of both sides of the ureteral stent body 1. A correction rope 42 is connected to the middle of the bottom end of the fixing seat 41. The bottom ends of the two correction ropes 42 are fixedly connected to pull-out ropes 43. The correction ropes 42 ensure that the pull-out ropes 43 are centered at the end of the ureteral stent body 1 when straightened, thus preventing the end of the ureteral stent body 1 from being pulled outward at an angle due to uneven force during pulling, which would damage the inner wall of the urethra. The bottom ends of the pull-out ropes 43 are also fixedly connected to the correction ropes 42. A guide seat 44 is fixedly connected. The guide seat 44 has a flushing groove 45 at one end near the pull-out rope 43. In order to allow the pull-out rope 43 and the correction rope 4 to be smoothly discharged with urine after they are not restricted, a delay fixing seat 46 is fixedly connected to the lower outer side of the ureteral stent body 1. A fixing capsule 47 is fixedly connected to the lower outer side of the ureteral stent body 1. The fixing capsule 47 is wrapped around the outside of the fixing seat 41, the correction rope 42, the pull-out rope 43, the guide seat 44 and the delay fixing seat 46. During use, the fixation capsule 47 gradually degrades inside the urethra over time, while the slower-degrading delay fixation seat 46 degrades later. This prevents the pull-out rope 43 from tangling due to uneven degradation of the fixation capsule 47. After both the fixation capsule 47 and the delay fixation seat 46 have completely degraded, as the patient urinates, the flushing groove 45 on the guide seat 44 evenly receives the impact of urine from inside the urethra, causing the guide seat 44 to move outward from the urethra. Ultimately, this causes the pull-out rope 43 connected to it to move outward, allowing the end of the pull-out rope 43 to be expelled from the urethra first, facilitating subsequent removal. Figure 5 and Figure 6 These represent the states of the fixed capsule 47 and the time-degrading fixing seat 46 before and after degradation, respectively, and the states of the pulled-out rope 43 and the correction rope 42.

[0033] To avoid damage to the urethral wall during the operation of the convenient removal component 4, the delay fixation seat 46 is wrapped around the outside of the guide seat 44, and the edges and corners of the fixation seat 41, guide seat 44, delay fixation seat 46 and fixation capsule 47 are all rounded.

[0034] Example 2

[0035] Based on Example 1, which solved the technical problem of requiring a special surgery to remove the ureteral stent, Example 1 still has the problem of the ureteral stent easily moving inside the urethra due to the impact of urine. Combined with... Figures 1-10 As shown, the specific implementation process is as follows: In order to improve the limiting ability of the ureteral stent body 1 relative to the urethra and prevent it from moving due to urine impact during use, the limiting component 3 includes several pairs of perforations 31 equidistantly opened on the ureteral stent body 1. The top and bottom ends of the ureteral stent body 1 are fixedly connected with bends 33. Magnetic metal rings 32 are fixedly connected to the outer side of the ureteral stent body 1 near the bends 33 and the fixed capsule 47. The two bends 33 have opposite bending directions, and the two correction ropes 42 have the same length. In order to ensure that the direction of the correction ropes 42 being pulled is parallel to the ureteral stent body 1, a chitosan coating 2 is provided on the outer side of the ureteral stent body 1. A biodegradable coating 5 is provided on the outer side of the chitosan coating 2. The biodegradable coating 5 can protect the chitosan coating 2 from damage caused by external factors before it is degraded. Chitosan is a deacetylated product of chitin, which is natural, non-toxic, antibacterial, and anticancer. It has biocompatibility and biodegradability and is widely used in cosmetics, textiles, food industry and biomedicine. However, chitosan also has drawbacks, such as good antibacterial properties in acidic solutions and lower antibacterial activity compared to commonly used antibacterial materials. Quaternized chitosan is a chemically modified form of chitosan, with quaternary ammonium salt groups introduced into its molecular side chains, further enhancing its functionality. It exhibits strong antimicrobial activity against viruses, Gram-negative bacteria, Gram-positive bacteria, fungi, as well as drug-resistant Escherichia coli, drug-resistant Staphylococcus aureus, drug-resistant Pseudomonas aeruginosa, and drug-resistant Acinetobacter baumannii, and is safe, environmentally friendly, and has no toxic side effects.

[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-surgical, easily removable ureteral stent, comprising a ureteral stent body (1) as a supporting base, characterized in that: The ureteral stent body (1) is provided with a limiting component (3) on the outside to increase its limiting ability, and the ureteral stent body (1) is provided with a convenient removal component (4) at the bottom end to facilitate its removal from the patient's body. The removable assembly (4) includes a fixing seat (41) fixedly connected to the bottom of both sides of the ureteral stent body (1). A correction rope (42) is connected to the middle of the bottom end of the fixing seat (41). Pull-out ropes (43) are fixedly connected to the bottom ends of the two correction ropes (42). A guide seat (44) is fixedly connected to the bottom end of the pull-out rope (43). A flushing groove (45) is provided on the guide seat (44) near the end of the pull-out rope (43). A delay fixing seat (46) is fixedly connected to the lower outer side of the ureteral stent body (1). A fixing capsule (47) is fixedly connected to the lower outer side of the ureteral stent body (1).

2. The non-surgical, easily removable ureteral stent according to claim 1, characterized in that: The fixing capsule (47) is wrapped around the outside of the fixing seat (41), the correction rope (42), the pull rope (43), the guide seat (44), and the delay fixing seat (46).

3. The non-surgical, easily removable ureteral stent according to claim 1, characterized in that: The delay fixing seat (46) is wrapped around the outside of the guide seat (44), and the edges and corners of the fixing seat (41), guide seat (44), delay fixing seat (46) and fixing capsule (47) are all arc-shaped.

4. The non-surgical, easily removable ureteral stent according to claim 1, characterized in that: The limiting component (3) includes several pairs of perforations (31) equally spaced on the ureteral stent body (1). The top and bottom ends of the ureteral stent body (1) are fixedly connected with a return tube (33). The outer side of the ureteral stent body (1) near the return tube (33) and the fixed capsule (47) is fixedly connected with a magnetic metal ring (32).

5. A non-surgical, easily removable ureteral stent according to claim 4, characterized in that: The two bends (33) are bent in opposite directions, and the two correction ropes (42) are of the same length.

6. The non-surgical, easily removable ureteral stent according to claim 1, characterized in that: The ureteral stent body (1) is provided with a chitosan coating (2) on the outside, and a biodegradable coating (5) is provided on the outside of the chitosan coating (2).

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