Ureteral stent tube and removing device

Abstract

The utility model belongs to the technical field of medical instruments, in particular to a ureter stent tube and a pulling device, which comprises a stent tube, a guide wire, a pushing tube, a catheter and a catcher, a plurality of tail wires are arranged on the stent tube, a plurality of suckers are arranged on the tail wires at equal intervals, one end of the pushing tube wraps the tail wires and is sleeved at the outer end of the stent tube, and the other end of the pushing tube is sleeved at the outer end of the catheter. A first operation cavity, a second operation cavity, an air inflation cavity and a water injection cavity are formed in the catheter, the first operation cavity and the second operation cavity facilitate penetrating of the guide wire and the capturing device, the air inflation cavity facilitates air inflation into the air bag, the water injection cavity injects water into the bladder, a traction base, a mounting plate and a reset spring are arranged in the capturing device, and the traction base is connected with the mounting plate and a pull ring through a traction rope. By means of the device, a stent tube can be directly pulled out conveniently, pain and inconvenience caused by pulling out of special instruments such as a cystoscope and a ureteroscope can be avoided, and meanwhile the economic burden of a patient is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical appliances, and specifically relates to a ureteral stent tube and a removal device. Background Art

[0002] Ureteral stents are medical devices widely used in urological clinical practice for intracavitary surgical treatment of urinary system diseases, such as ureteroscopic lithotripsy, ureteroscopy, percutaneous nephrolithotomy, pyeloplasty, ureterocervical anastomosis, laparoscopic ureterolithotomy, and preoperative placement of ureteral stents with flexible endoscopes. Ureteral stents can effectively relieve obstruction, drain urine, dilate ureters, prevent stenosis, and accelerate the discharge of residual stones. At present, traditional ureteral stent placement can cause bladder irritation, hematuria, low back pain, and even urinary reflux infection, fever, and other symptoms of varying degrees, affecting the patient's quality of life to varying degrees. In addition, the removal of the ureteral stent requires the use of special instruments such as cystoscopes and ureteroscopes, and even requires entering the operating room for anesthesia, which adds pain and inconvenience to the patient, and is expensive, increasing the patient's financial burden. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a ureteral stent and a removal device to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model adopts the following technical solution: a ureteral stent tube and removal device, including a stent tube, a guide wire, a push tube, a catheter and a catcher, the stent tube is provided with a plurality of tail wires, and a plurality of suction cups are equidistantly provided on the plurality of tail wires, one end of the push tube is wrapped with the tail wire and sleeved on the outer end of the stent tube, the catheter is provided with an operation cavity 1 and an operation cavity 2 for facilitating the passage of the guide wire and the catcher, an inflation cavity for facilitating inflation of the airbag and a water injection cavity for injecting water into the bladder, a traction seat, a mounting plate and a reset spring are provided inside the catcher, the traction seat is connected to the mounting plate and the pull ring through a traction rope, a capture net is provided on the mounting plate, a spring clamping block 2 is provided on the traction seat, and the spring clamping block 2 is engaged with the clamping hole 2 provided on the catcher.

[0005] The beneficial effects of the utility model are as follows: the utility model facilitates direct removal of the stent tube, which can avoid the pain and inconvenience caused by the use of special instruments such as cystoscopes and ureteroscopes for removal, while reducing the economic burden on patients.

[0006] To facilitate the capture:

[0007] As a further improvement of the above technical solution: one end of the stent tube is a kidney end, and the other end is a bladder end, and the kidney end is in a pigtail shape, and each tail wire is equidistantly arranged at the bladder end of the stent tube.

[0008] The beneficial effects of the present improvement are as follows: after the stent tube is placed along the guide wire, the guide wire is withdrawn using the push tube, and the kidney end of the stent tube can form a pigtail shape after the guide wire is withdrawn, thereby playing a role in fixation and preventing slippage, while the bladder end is located in the bladder, and each tail wire is like an octopus tail, floating in the bladder with urine, which can not only play a role in anti-reflux and minimize the symptoms of LUTS, but also because of the establishment of several suction cups on it, the friction and resistance can be increased, which is conducive to capture, and the suction cup only has the shape of a suction cup but does not have suction. The tail wire and the connecting end of the stent tube gradually change from hard to soft, which can not only play a supporting role, but also the gradually soft design can reduce the stimulation to the bladder triangle.

[0009] To facilitate guidewire removal:

[0010] As a further improvement of the above technical solution: a clamping seat, a pushing spring and a pushing plate are arranged inside the push tube, and there are two clamping seats, which are relatively arranged at the rear ends of the push tube, and a spring clamping block 1 is arranged on each of the two clamping seats, and the spring clamping block 1 is clamped and connected with a clamping hole 1 opened inside the push tube, and the push spring is connected to a push plate movably arranged inside the push tube, and spring clamping blocks 3 are arranged on both sides of the push plate, and the spring clamping blocks 3 on both sides are respectively clamped and connected with the clamping holes 3 opened on the push tube.

[0011] The beneficial effect of this improvement is as follows: by pressing the clamping seats on both sides to move inward, when the spring clamping block 1 is clamped in the clamping hole 1 to fix the position of the clamping seats, the clamping seats on both sides can clamp and fix the guide wire inside the push tube, and by setting up the push plate, when the push tube pushes the support tube forward into place under the guidance of the guide wire, it is only necessary to press the spring clamping block 3 to separate it from the clamping hole 3 to release the fixed state of the push plate, and the push plate can move toward the support tube rack under the action of the push spring, so that the push support tube rack is separated from the push tube and the tail wire is released.

[0012] To facilitate inflation of the balloon and insufflation of the bladder with saline:

[0013] As a further improvement of the above technical solution: an air bag is arranged at one end of the catheter near the bladder, and an inflation joint and a water injection joint are respectively arranged on the branches on both sides of the tail end of the other end away from the bladder, and the inflation joint is connected to the inside of the air bag through the inflation cavity, and the water injection joint is connected to the water injection cavity.

[0014] The beneficial effect of this improvement is that after the catheter is placed in the patient's body, the balloon can be expanded by simply connecting the inflation connector and filling the balloon with gas through the inflation chamber, so as to fix the catheter to prevent the catheter from falling out during the indwelling process. By connecting the water injection connector and pouring about 250 ml of saline into the bladder through the water injection chamber, the bladder can be placed in a semi-filled state, so that the capture device can capture the floating tail thread.

[0015] To facilitate the penetration of guidewires and grabbers:

[0016] As a further improvement of the above technical solution: the operation chamber 1 and the operation chamber 2 are respectively opened on both sides of the middle part of the catheter, and the outlet ends of the operation chamber 1 and the operation chamber 2 are respectively located on both sides of the head end of the catheter.

[0017] The beneficial effect of this improvement is that the establishment of the operation cavity 1 and the operation cavity 2 can facilitate the penetration of the guide wire and the capture device.

[0018] In order to facilitate the capture of the tail wire:

[0019] As a further improvement of the above technical solution: the catching net is located inside the head end of the catcher, the bottom end of the catching net is connected to the top end of the mounting plate, the bottom end of the mounting plate is connected to the traction rope and one end of the reset spring, the other end of the traction rope is connected to the traction seat, and the other end of the reset spring is connected to the inner wall of the catcher.

[0020] The beneficial effect of this improvement is that when the mounting plate is pulled downward by the traction rope, the spring can be compressed so that the catching net is retracted into the head end of the catcher; when the traction of the traction rope is released, the mounting plate can push the catching net to pop outward under the rebound force of the reset spring, thereby catching the tail wire floating in the bladder.

[0021] To facilitate the positioning of the fifth wheel:

[0022] As a further improvement of the above technical solution: two spring blocks are provided on both sides of the traction seat, and the two spring blocks on both sides are respectively engaged with the two clamping holes opened on both sides of the tail end of the catcher, and the bottom end of the traction seat is also connected to a traction rope, and the other end of the traction rope is connected to a pull ring located outside.

[0023] The beneficial effect of this improvement is that after the spring clamping block 2 is clamped in the clamping hole 2, the traction seat can be fixed in position; when the spring clamping block 2 is pressed to move inward and separate from the clamping hole 2, the position fixing state of the traction seat can be released, so that the mounting plate drives the catching net to pop outward under the rebound force of the reset spring.

[0024] To facilitate removal of the stent:

[0025] As a further improvement of the above technical solution: the catching net is a fiber wire mesh structure.

[0026] The beneficial effect of this improvement is that when the capture net is ejected into the bladder, the tail wire can be captured by hooking the suction cup on the tail wire and then retracting it. When capturing, it is not necessary to hook all the tail wires, and only hooking one can drive the stent tube to be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the internal structure of the pipe support rack and the push pipe of the utility model;

[0028] Figure 2 For the utility model Figure 1 Partial enlarged view of point A;

[0029] Figure 3 This is a schematic diagram of the guide wire withdrawal structure of the utility model;

[0030] Figure 4 For the utility model Figure 3 Partial enlarged view of point B;

[0031] Figure 5 This is a schematic diagram of the structure of the capture state of the utility model;

[0032] Figure 6 This is a schematic diagram of the internal structure of the catheter of the utility model;

[0033] Figure 7 For the utility model Figure 6 Partial enlargement of point C;

[0034] Figure 8 This is a schematic diagram of the internal structure of the catcher of the utility model;

[0035] In the figure: 1. support tube; 2. guide wire; 3. push tube; 4. catheter; 5. catcher; 6. tail wire; 7. suction cup; 8. clamping seat; 9. spring block 1; 10. clamping hole 1; 11. air bag; 12. inflation connector; 13. water injection connector; 14. operating chamber 1; 15. operating chamber 2; 16. inflation chamber; 17. water injection chamber; 18. traction seat; 19. mounting plate; 20. reset spring; 21. traction rope; 22. pull ring; 23. catching net; 24. spring block 2; 25. push spring; 26. push plate; 27. spring block 3. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0037] like Figure 1-8As shown, a ureteral stent tube and removal device, including a stent tube 1, a guide wire 2, a push tube 3, a catheter 4 and a catcher 5, the stent tube 1 is provided with a plurality of tail wires 6, and a plurality of suction cups 7 are equidistantly arranged on the plurality of tail wires 6, one end of the push tube 3 is wrapped with the tail wire 6 and sleeved on the outer end of the stent tube 1, the catheter 4 is provided with an operation cavity 14 and an operation cavity 2 15 for facilitating the penetration of the guide wire 2 and the catcher 5, an inflation cavity 16 for facilitating inflation of the air bag 11 and a water injection cavity 17 for injecting water into the bladder, a traction seat 18, a mounting plate 19 and a reset spring 20 are provided inside the catcher 5, the traction seat 18 is connected to the mounting plate 19 and the pull ring 22 through a traction rope 21, a capture net 23 is provided on the mounting plate 19, and the traction seat 1 A spring card block 24 is provided on 8, and the spring card block 24 is connected with the card hole 2 provided on the catcher 5. The utility model facilitates the direct removal of the stent tube 1, and can reduce the economic burden of the patient while avoiding the pain and inconvenience caused by the use of special instruments such as cystoscopes and ureteroscopes for removal. One end of the stent tube 1 is the kidney end, and the other end is the bladder end, and the kidney end is pigtail-shaped, and each tail wire 6 is equidistantly arranged at the bladder end of the stent tube 1. After the stent tube 1 is placed along the guide wire 2, the guide wire 2 is withdrawn by using the push tube 3. The kidney end of the stent tube 1 can form a pigtail shape after the guide wire 2 is withdrawn, thereby playing a role in fixing and preventing slippage, and the bladder end is located in the bladder, and each tail wire 6 is like an octopus tail, accompanying urine in the bladder. The inner floatation can not only play the role of anti-reflux and minimize the LUTS symptoms, but also increase the friction and resistance due to the establishment of several suction cups 7 on it, which is conducive to capture. The push tube 3 is provided with a clamping seat 8, a push spring 25 and a push plate 26, and the number of the clamping seats 8 is two. The two clamping seats 8 are relatively arranged at the rear ends of the push tube 3. The two clamping seats 8 are both provided with a spring block 9, and the spring block 9 is connected with the clamping hole 10 opened in the push tube 3. The push spring 25 is connected with the push plate 26 movably arranged in the push tube 3. The push plate 26 is provided with spring blocks 3 27 on both sides. The spring blocks 3 27 on both sides are respectively connected with the clamping holes 3 opened on the push tube 3. Then, by pressing the clamping seats 8 on both sides to move inward, when the spring clamping block 19 is clamped in the clamping hole 10 to fix the clamping seat 8 in position, the clamping seats 8 on both sides can clamp and fix the guide wire 2 located inside the push tube 3. Through the establishment of the push plate 26, when the push tube 3 pushes the support tube 1 forward under the guidance of the guide wire 2, it is only necessary to press the spring clamping block 3 27 to separate from the clamping hole 3 to release the fixed state of the push plate 26. The push plate 26 can move toward the branch tube frame 1 under the action of the push spring 25, so that the push branch tube frame 1 is separated from the push tube 3 to release the tail wire 6. The end of the catheter 4 close to the bladder is provided with an air bag 11, and the branches on both sides of the tail end of the other end away from the bladder are respectively provided with an inflation joint 12 and a water injection joint 13.The inflation connector 12 is connected to the inside of the airbag 11 through the inflation cavity 16, and the water injection connector 13 is connected to the water injection cavity 17. After the catheter 4 is placed in the patient's body, it is only necessary to connect the inflation connector 12 to fill the air into the airbag 11 through the inflation cavity 16 to expand the airbag 11, so as to fix the catheter 4 to prevent the catheter 4 from slipping out during the indwelling process. By connecting the water injection connector 13, about 250 ml of saline is poured into the bladder through the water injection cavity 17, so that the bladder can be in a semi-filled state, so that the catcher 5 can catch the floating tail wire 6. The operation cavity 14 and the operation cavity The two operating chambers 15 are respectively opened on both sides of the middle part of the catheter 4, and the outlet ends of the operating chamber 14 and the operating chamber 2 15 are respectively located on both sides of the head end of the catheter 4. Through the establishment of the operating chamber 14 and the operating chamber 2 15, it is convenient to use the guide wire 2 and the catcher 5 through. The catch net 23 is located inside the head end of the catcher 5. The bottom end of the catch net 23 is connected to the top of the mounting plate 19, and the bottom end of the mounting plate 19 is connected to the traction rope 21 and one end of the reset spring 20. The other end of the traction rope 21 is connected to the traction seat 18, and the other end of the reset spring 20 is connected to the inner wall of the catcher 5. The traction rope 21 pulls the mounting plate 19. When the traction seat 18 moves downward, the spring can be compressed so that the catching net 23 is stored inside the head end of the catcher 5. When the traction state of the traction rope 21 is released, the mounting plate 19 can push the catching net 23 to pop outward under the rebound force of the reset spring 20 to catch the tail wire 6 floating in the bladder. The traction seat 18 is provided with two spring blocks 24 on both sides. The two spring blocks 24 on both sides are respectively connected with the two card holes opened on both sides of the tail end of the catcher 5. The bottom end of the traction seat 18 is also connected to the traction rope 21. The other end of the traction rope 21 is connected to the pull ring 22 located outside. Through the spring block After the second spring block 24 is stuck in the second clamping hole, the position of the traction seat 18 can be fixed. When the spring clamping block 24 is pressed and moved inward and separated from the second clamping hole, the position fixing state of the traction seat 18 can be released, so that the mounting plate 19 drives the catching net 23 to pop outward under the rebound force of the reset spring 20. The catching net 23 is a fiber wire mesh structure. When the catching net 23 pops out into the bladder, the tail wire 6 can be caught by hooking the suction cup 7 on the tail wire 6. When catching, it is not necessary to hook all the tail wires 6. Only hooking one can drive the stent tube 1 to be removed.

[0038] The working principle of the utility model is as follows: during operation, the guide wire 2 is first inserted, and under the guidance of the guide wire 2, the push tube 3 pushes the support tube 1 forward to be in place, and then it is only necessary to press the spring clamp block 3 27 to separate from the clamp hole 3 to release the fixed state of the push plate 26, and the push plate 26 can move toward the support tube frame 1 under the action of the push spring 25, so that the push support tube frame 1 is separated from the push tube 3 to release the tail wire 6, and when the clamping seats 8 on both sides are pressed to move inward, when the spring clamp block 1 9 is clamped in the clamp hole 10 to fix the position of the clamping seat 8, the clamping seats 8 on both sides can clamp and fix the guide wire 2 located inside the push tube 3, and then the guide wire 2 can be withdrawn by using the push tube 3 , so that the kidney end of the stent tube 1 forms a pigtail shape after the guide wire 2 is withdrawn, thereby playing a role in fixing and preventing slippage, and the bladder end is located in the bladder, and each tail wire 6 is like an octopus tail, floating in the bladder with urine, which can not only play a role in anti-reflux and minimize the symptoms of LUTS, but also because of the establishment of a number of suction cups 7 on it, the friction and resistance can be increased, which is conducive to capture. After the catheter 4 is placed in the patient's body, it only needs to connect the inflation connector 12 to fill the air bag 11 through the inflation cavity 16 to expand the air bag 11, so as to fix the catheter 4 to prevent the catheter 4 from slipping out during the indwelling process. 13, about 250ml of saline is poured into the bladder through the water injection chamber 17, which can make the bladder half-filled so that the catcher 5 can catch the floating tail wire 6. The establishment of the operating chamber 14 and the operating chamber 2 15 can facilitate the penetration of the guide wire 2 and the catcher 5. When the traction rope 21 pulls the mounting plate 19 downward, the spring can be compressed to make the catch net 23 retracted inside the head end of the catcher 5. When the traction state of the traction rope 21 is released, the mounting plate 19 can push the catch net 23 outward under the rebound force of the reset spring 20 to catch the tail wire 6 floating in the bladder. After being stuck in the second clamping hole, the traction seat 18 can be fixed in position. When the spring clamping block 24 is pressed and moved inwardly and separated from the second clamping hole, the position fixing state of the traction seat 18 can be released, so that the mounting plate 19 drives the catching net 23 to pop outward under the rebound force of the reset spring 20. When the catching net 23 pops out into the bladder, the tail wire 6 can be caught by hooking the suction cup 7 on the tail wire 6. When catching, it is not necessary to hook all the tail wires 6. Only hooking one can drive the bracket tube 1 to be removed. By setting up the pull ring 22, the traction seat 18 and the mounting plate 19 can be pulled down through the traction rope 21.

[0039] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0040] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A ureteral stent tube and removal device, comprising a stent tube (1), a guide wire (2), a push tube (3), a catheter (4) and a catcher (5), characterized in that: The stent tube (1) is provided with a plurality of tail wires (6), and a plurality of suction cups (7) are equidistantly provided on the plurality of tail wires (6). One end of the push tube (3) is wrapped with the tail wire (6) and sleeved on the outer end of the stent tube (1). The catheter (4) is provided with an operation cavity (14) and an operation cavity (15) for facilitating the penetration of the guide wire (2) and the catcher (5), an inflation cavity (16) for facilitating inflation of the air bag (11), and a water injection cavity (17) for injecting water into the bladder. 7), a traction seat (18), a mounting plate (19) and a reset spring (20) are arranged inside the catcher (5), the traction seat (18) is connected to the mounting plate (19) and the pull ring (22) through a traction rope (21), a catching net (23) is arranged on the mounting plate (19), a spring clamping block (24) is arranged on the traction seat (18), and the spring clamping block (24) is engaged with the clamping hole (2) provided on the catcher (5).

2. A ureteral stent and removal device according to claim 1, characterized in that: One end of the stent tube (1) is a kidney end, and the other end is a bladder end. The kidney end is in a pigtail shape, and each tail wire (6) is equidistantly arranged at the bladder end of the stent tube (1).

3. The ureteral stent and removal device according to claim 1, characterized in that: The push tube (3) is provided with a clamping seat (8), a push spring (25) and a push plate (26) inside. The number of the clamping seats (8) is two. The two clamping seats (8) are arranged at the rear ends of the push tube (3) opposite to each other. The two clamping seats (8) are both provided with a spring clamping block (9). The spring clamping block (9) is connected to a clamping hole (10) provided inside the push tube (3) by clamping. The push spring (25) is connected to a push plate (26) movably arranged inside the push tube (3). The push plate (26) is provided with a spring clamping block (27) on both sides. The spring clamping blocks (27) on both sides are respectively connected to the clamping holes (10) provided on the push tube (3) by clamping.

4. The ureteral stent and removal device according to claim 1, characterized in that: The end of the catheter (4) close to the bladder is provided with an air bag (11), and the branches on both sides of the tail end of the other end away from the bladder are respectively provided with an inflation joint (12) and a water injection joint (13), and the inflation joint (12) is connected to the inside of the air bag (11) through an inflation cavity (16), and the water injection joint (13) is connected to the water injection cavity (17).

5. The ureteral stent and removal device according to claim 1, characterized in that: The operation chamber 1 (14) and the operation chamber 2 (15) are respectively opened on both sides of the middle part of the catheter (4), and the outlet ends of the operation chamber 1 (14) and the operation chamber 2 (15) are respectively located on both sides of the head end of the catheter (4).

6. The ureteral stent and removal device according to claim 1, characterized in that: The catching net (23) is located inside the head end of the catcher (5), the bottom end of the catching net (23) is connected to the top end of the mounting plate (19), the bottom end of the mounting plate (19) is connected to a traction rope (21) and one end of a return spring (20), the other end of the traction rope (21) is connected to a traction seat (18), and the other end of the return spring (20) is connected to the inner wall of the catcher (5).

7. The ureteral stent and removal device according to claim 1, characterized in that: Two spring blocks (24) are arranged on both sides of the traction seat (18), and the two spring blocks (24) on both sides are respectively connected to the two clamping holes opened on both sides of the tail end of the catcher (5) by clamping, and the bottom end of the traction seat (18) is also connected to the traction rope (21), and the other end of the traction rope (21) is connected to the pull ring (22) located outside.

8. The ureteral stent and removal device according to claim 1, characterized in that: The catching net (23) is a fiber wire mesh structure.

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