Tail thread ureteral stent

Abstract

The utility model relates to the technical field of medical instruments, and discloses a tail wire ureteral stent which comprises a main body mechanism and an accessory mechanism, the upper end of the main body mechanism is fixedly connected with a renal pelvis connecting mechanism, and the lower end of the main body mechanism is fixedly connected with a bladder connecting mechanism; the pelvis connecting mechanism comprises a pelvis connecting pipe, a first support is fixedly arranged at the upper end of the pelvis connecting pipe, the bladder connecting mechanism comprises a bladder connecting pipe, and an oblique incision is fixedly formed in the lower end of the bladder connecting pipe. According to the utility model, the double-polypropylene silk thread is used for replacing the far-end ureter stent, the urine passing ability in the middle of the far-end material of the ureter is changed, the backflow of the bladder ureter is reduced, the postoperative symptom of stent implantation is reduced, and the tail-end silk thread is used for replacing the far-end ureter stent, so that the length of the far-end ureter stent can be long or short and can be customized privately; and the overall application range of the device is enlarged, and the overall practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a tail wire ureteral stent. Background Art

[0002] The ureteral stent tube is one of the commonly used tools in urological surgery, and is often used in kidney stone and ureteral stone surgeries, as well as in ureteral plasty and repair surgeries. It can be used to drain hydronephrosis, especially infected hydronephrosis. After the ureteral stent tube is placed, it temporarily communicates the kidney and the bladder to ensure that the urine in the kidney smoothly drains into the bladder.

[0003] The existing patent (publication number: CN215192618U) discloses that "the utility model relates to a ureteral stent, which includes a stent body, a renal pelvis connecting body and a bladder connecting body connected to both ends of the stent body. The stent body is in the shape of a hollow spring. The two ends of the stent body are connected with inwardly curled parts in opposite directions to form a renal pelvis connecting body and a bladder connecting body. A positioning rod penetrating both ends of the stent body is arranged inside the stent body, and both ends of the positioning rod are respectively fixed to the renal pelvis connecting body and the bladder connecting body. The renal pelvis connecting body and the bladder connecting body are both curled from tubes with the same and uniform diameter. The two ends of the stent body are respectively fixed on the corresponding end faces of the renal pelvis connecting body and the bladder connecting body. The tubes where the renal pelvis connecting body is located and the tubes where the bladder connecting body is located are both made of plastic materials. The stent body of the utility model is in a hollow form, which provides stable support for the ureter and ensures that there is no absolute blockage at any contact part between the ureter and the stent body, thus ensuring the drainage effect."

[0004] The inventor found the following problems in the prior art during the implementation of the present utility model: After the existing ureteral stent is implanted, the symptoms of frequent urination, urgency, dysuria, and low back pain in patients are relatively obvious. Because it is in direct contact with the bladder mucosa and participates in the vesicoureteral reflux mechanism and lower urinary tract symptoms, it will cause irritation to the bladder mucosa, resulting in symptoms such as frequent urination, urgency, and vesicoureteral reflux, and postoperative discomfort symptoms.

[0005] Therefore, the present utility model provides a tail wire ureteral stent to solve the problems raised in the above background art. Summary of the Utility Model

[0006] The purpose of the present utility model is to solve the deficiencies existing in the prior art, and a tail - wire ureteral stent is proposed. By using double - polypropylene silk thread to replace the distal ureteral stent, the urine permeability in the middle of the material at the distal ureter is changed, reducing vesicoureteral reflux. By reducing the material in the bladder and reducing the contact with the trigone of the bladder, symptoms of frequent urination and urgency are reduced. At the same time, the end of the silk thread is designed as a circular ring, and shapes such as Y - type, T - type, and U - type that are beneficial for fixing the stent can be selected to prevent the silk thread from retracting into the ureter or slipping into the urethra. The part of the stent tube at the connection with the double - polypropylene silk thread is cut into an inclined plane to reduce the contact irritation with the ureteral wall and reduce the irritation to the ureteral mucosa. The length of the end silk thread replacing the distal ureteral stent can be long or short, and can be customized privately, increasing the overall applicable range of the device and enhancing the overall practicality of the device.

[0007] To achieve the above - mentioned purpose, the present utility model provides the following technical solutions:

[0008] A tail - wire ureteral stent includes a main body mechanism and an accessory mechanism. The upper end of the main body mechanism is fixedly connected with a renal pelvis connection mechanism, and the lower end of the main body mechanism is fixedly connected with a bladder connection mechanism;

[0009] The renal pelvis connection mechanism includes a renal pelvis connection tube, and a first stent is fixedly arranged at the upper end of the renal pelvis connection tube. The bladder connection mechanism includes a bladder connection tube, and an inclined incision is fixedly arranged at the lower end of the bladder connection tube;

[0010] Through the above - mentioned technical solutions, by setting the main body mechanism, it is beneficial to penetrate the device into the ureter of the patient during use, realizing the basic use function of the device. By setting the accessory mechanism, it is convenient for the user to place and use the device through the accessory mechanism. By setting the renal pelvis connection mechanism, it is beneficial to realize the function of fixedly arranging the upper end of the device in the renal pelvis during use. By setting the bladder connection mechanism, it is beneficial to realize the function of fixedly arranging the lower end of the device in the bladder during use. By setting the renal pelvis connection tube and the bladder connection tube, it is convenient for the user to insert and fix the upper and lower ends of the device into the renal pelvis and bladder of the patient respectively. By setting the inclined incision, it is beneficial to reduce the contact irritation with the ureteral wall and improve the use effect of the patient.

[0011] Further, the main body mechanism includes a stent main body. A plurality of main body scales are fixedly arranged at equal intervals on the surface of the stent main body, and a plurality of through - holes are arranged at equal intervals on the surfaces of the stent main body and the renal pelvis connection tube;

[0012] Through the above - mentioned technical solutions, it is beneficial for the user to determine the length of the device extending into the patient's body, facilitating the user's use.

[0013] Further, the total length of the stent main body is 25 cm;

[0014] Through the above technical solution, it is beneficial to realize the basic use function of the device.

[0015] Furthermore, a second bracket is fixedly arranged on one side of the lower end of the inclined cut, and the second bracket is made of double polypropylene silk thread with a thickness of 5-0;

[0016] Through the above technical solution, when the device is in use, it is beneficial to realize the function of fixedly arranging its lower end inside the bladder of the patient.

[0017] Furthermore, a third bracket is fixedly arranged on the other side of the lower end of the inclined cut, and the third bracket is made of double polypropylene silk thread with a thickness of 5-0;

[0018] Through the above technical solution, the two ends of the upper end of the bracket can be circular, Y-shaped, T-shaped, U-shaped or other shapes beneficial to fixing the bracket, preventing the silk thread from retracting into the ureter, and improving the safety when the device is in use.

[0019] Furthermore, the accessory mechanism includes a push tube, and a through hole is provided in the middle position inside the push tube;

[0020] Through the above technical solution, it is convenient for the user to send the whole device into the patient's body for use.

[0021] Furthermore, the length of the push tube is 70-90 cm;

[0022] Through the above technical solution, it is beneficial to realize the basic use function of the push tube and is convenient for the user to use according to the actual use situation of the patient.

[0023] The utility model has the following beneficial effects:

[0024] 1. A tail silk ureteral stent proposed by the utility model, compared with the existing ureteral stent, this ureteral stent uses double polypropylene silk thread instead of the distal ureteral stent, changes the urine permeability in the middle of the distal ureteral material, reduces vesicoureteral reflux, reduces the symptoms after stent implantation. At the same time, the end of the silk thread adopts a closed ring design, and Y-shaped, T-shaped, U-shaped and other shapes beneficial to fixing the stent can be selected to prevent the silk thread from retracting into the ureter, avoiding the stent from retracting into the ureter or slipping into the urethra, and improving the safety when the whole device is in use.

[0025] 2. A tail-thread ureteral stent proposed by the present utility model. Compared with the existing ureteral stents, in this ureteral stent, the part of the stent tube at the connection with the double polypropylene silk thread is cut into an inclined plane to reduce the contact irritation with the ureteral wall, reduce the irritation to the bladder mucosa, reduce the symptoms of frequent urination and urgency, and reduce the material in the intramural segment to reduce urethral pain. The length of the terminal silk thread can replace that of the distal ureteral stent and can be customized in length, increasing the overall scope of application of the device and enhancing the overall practicality of the device. Description of the Drawings

[0026] Figure 1 An isometric schematic view of a tail-thread ureteral stent proposed by the present utility model;

[0027] Figure 2 An isometric schematic view of the stent body of a tail-thread ureteral stent proposed by the present utility model;

[0028] Figure 3 An isometric schematic view of the renal pelvis connection mechanism of a tail-thread ureteral stent proposed by the present utility model;

[0029] Figure 4 An isometric schematic view of the bladder connection mechanism of a tail-thread ureteral stent proposed by the present utility model;

[0030] Figure 5 An isometric schematic view of the accessory mechanism of a tail-thread ureteral stent proposed by the present utility model.

[0031] Legend Explanation:

[0032] 1. Renal pelvis connection mechanism; 2. Main body mechanism; 3. Bladder connection mechanism; 4. Accessory mechanism; 5. Through hole; 101. Renal pelvis connection tube; 102. First stent; 201. Stent body; 202. Main body scale; 301. Oblique incision; 302. Bladder connection tube; 303. Second stent; 304. Third stent; 401. Through hole; 402. Pushing tube. Detailed Embodiment

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] Refer to Figures 1-4 , an embodiment provided by the present utility model:

[0035] A tail - wire ureteral stent, comprising a main body mechanism 2 and an accessory mechanism 4. The upper end of the main body mechanism 2 is fixedly connected to a renal pelvis connection mechanism 1, and the lower end of the main body mechanism 2 is fixedly connected to a bladder connection mechanism 3;

[0036] The renal pelvis connection mechanism 1 includes a renal pelvis connecting tube 101. A first stent 102 is fixedly arranged at the upper end of the renal pelvis connecting tube 101. The main body mechanism 2 includes a stent main body 201. A plurality of main body scales 202 are fixedly arranged at equal intervals on the surface of the stent main body 201. The total length of the stent main body 201 is 25 cm.

[0037] By providing the renal pelvis connecting tube 101 and the first stent 102, it is convenient to realize the function of fixing above the renal pelvis when the device is used. By providing the stent main body 201 and the main body scales 202, it is beneficial to realize the basic use function of the device, and it is convenient for the user to determine the length of the device inserted into the patient's body. A plurality of through - holes 5 are arranged at equal intervals on the surfaces of the stent main body 201 and the renal pelvis connecting tube 101, which is convenient for drainage.

[0038] The bladder connection mechanism 3 includes a bladder connecting tube 302. An inclined incision 301 is fixedly arranged at the lower end of the bladder connecting tube 302. A second stent 303 is fixedly arranged on one side of the lower end of the inclined incision 301. The second stent 303 is made of 5 - 0 double - polypropylene silk thread. A third stent 304 is fixedly arranged on the other side of the lower end of the inclined incision 301. The third stent 304 is made of 5 - 0 double - polypropylene silk thread.

[0039] By using double - polypropylene silk thread to make the second stent 303 and the third stent 304, it changes the urine permeability in the middle of the material at the distal end of the ureter, reduces the irritation to the bladder mucosa, reduces symptoms such as frequent urination and urgency, reduces the material in the intramural segment to reduce dysuria, and avoids vesicoureteral reflux. At the same time, by using double - polypropylene silk thread to make both ends of the device, it is convenient for the user to change the overall length of the device according to the actual situation of the patient, improving the practicability of the device. By providing the bladder connecting tube 302, it is beneficial to realize the function of fixing the upper end of the device inside the patient's bladder when the device is used. By providing the inclined incision 301, it is beneficial to reduce the contact area between the device and the surface of the patient's ureter when the device is used, reducing the occurrence of complications when the patient uses the device, and improving the comfort of the device during overall use.

[0040] The accessory mechanism 4 includes a push tube 402. A through - hole 401 is arranged in the middle position inside the push tube 402. The length of the push tube 402 is 70 - 90 cm.

[0041] By providing the push tube 402 and arranging the through - hole 401 inside the push tube 402, it is convenient for the user to push the whole device to the required position in the patient's body, improving the convenience of the device during use.

[0042] Working principle: When the device is in use, the renal pelvis connecting mechanism 1 is pushed and placed into the patient's renal pelvis through the push tube 402, and the bladder connecting mechanism 3 is placed into the patient's bladder through the push tube 402, ensuring that the main body mechanism 2 of the device penetrates inside the patient's ureter. The second stent 303 and the third stent 304 made of double polypropylene silk threads are used to replace the distal end of the traditional stent tube, improving the patient's tolerance to stent placement. The distal ends of the second stent 303 and the third stent 304 adopt circular rings to prevent the stent from retracting into the ureter or slipping into the urethra. The bladder connecting tube 302 and the bevel incision 301 at the connection with the second stent 303 and the third stent 304 are beveled to reduce the contact irritation with the ureteral wall. The uppermost end and the lowermost end of the bevel extend respectively with the second stent 303 and the third stent 304 to achieve the fixing function.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tail wire ureteral stent, comprising a main body mechanism (2) and an accessory mechanism (4), characterized in that: The upper end of the main body mechanism (2) is fixedly connected to a renal pelvis connection mechanism (1), and the lower end of the main body mechanism (2) is fixedly connected to a bladder connection mechanism (3); The renal pelvis connection mechanism (1) includes a renal pelvis connection tube (101). A first bracket (102) is fixedly arranged at the upper end of the renal pelvis connection tube (101). The bladder connection mechanism (3) includes a bladder connection tube (302). An inclined incision (301) is fixedly arranged at the lower end of the bladder connection tube (302). A second bracket (303) is fixedly arranged on one side at the lower end of the inclined incision (301). The second bracket (303) is made of double polypropylene silk thread with a thickness of 5-0. A third bracket (304) is fixedly arranged on the other side at the lower end of the inclined incision (301). The third bracket (304) is made of double polypropylene silk thread with a thickness of 5-0.

2. The tail wire ureteral stent according to claim 1, characterized in that: The main body mechanism (2) includes a bracket main body (201). A plurality of main body scales (202) are fixedly arranged on the surface of the bracket main body (201) at equal intervals. A plurality of through holes (5) are arranged on the surfaces of the bracket main body (201) and the renal pelvis connection tube (101) at equal intervals.

3. The tail wire ureteral stent according to claim 2, characterized in that: The total length of the bracket main body (201) is 25 cm.

4. A tail wire ureteral stent according to claim 1, characterized in that: The accessory mechanism (4) includes a push tube (402). A through hole (401) is arranged in the middle of the interior of the push tube (402).

5. The tail wire ureteral stent according to claim 4, characterized in that: The length of the push tube (402) is 70-90 cm.

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