Ureteral stent capable of preventing pulling

Abstract

The utility model discloses a urinary ureteral stent capable of preventing pulling, and relates to the technical field of ureteral stents. An anti-pulling ureteral stent for urinary use comprises a lower stent body, a sleeve is slidably connected to the lower stent body, an upper stent body is slidably connected to the sleeve, the ends, away from each other, of the upper stent body and the lower stent body are each of a spiral curly structure, the upper stent body and the lower stent body are each of a hollow structure, and the ends, away from each other, of the upper stent body and the lower stent body are each provided with a plurality of liquid inlets. Elastic ropes distributed at equal intervals are connected between the upper support and the lower support. The device is arranged in the body of a patient so that urine can be guided, the air bag can be reinforced from the two ends of the device after being expanded, the device is prevented from being pulled and displaced, in the using process of the device, under the telescopic action of the elastic rope, the lower support or the upper support can slide in the sleeve, and then the pulling force is relieved; displacement of the device or discomfort to a patient caused by too large pulling force is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to ureteral stent technical field especially relates to a urinary ureteral stent of preventing to pull. BACKGROUND

[0002] Urological diseases are one of the common health problems in clinical practice, among which ureteral stricture, stones or tumors and other lesions may cause urine flow obstruction, seriously affecting the quality of life of patients. In order to solve these problems, the method of placing ureteral stent (also known as double J tube) is often used in clinical practice to maintain the patency of urinary tract, so as to relieve the symptoms of patients and prevent further complications. Ureteral stent is a slender and flexible tube, one end of which is placed in the kidney and the other end is located in the bladder, which helps urine flow smoothly from the kidney to the bladder through its internal channel.

[0003] However, in the actual application process, it is found that the traditional ureteral stent has some shortcomings, especially the challenges related to the stability of the stent, especially when the patient performs daily activities such as walking, running or even simple body position change, which may cause the ureteral stent to be subjected to different degrees of pressure and pulling force. If these external forces exceed the range that the stent itself can withstand, it may lead to changes in the position of the stent, and in severe cases, it may even completely detach from the original position. The occurrence of displacement or pulling phenomenon not only may cause the failure of the function of the stent, but also may cause discomfort to the patient and even damage the ureteral wall, increasing the risk of infection. In addition, frequent movement may also shorten the effective service life of the stent, increase the medical cost and the pain of the patient.

[0004] In order to solve the above problems, we propose a urinary ureteral stent that can prevent pulling, which can reduce the pulling force, the stability of the stent support and the probability of displacement. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome the displacement or pulling of the ureteral stent caused by external forces during use, which affects the functionality of the ureteral stent and may cause additional physical discomfort or even damage to the patient, the utility model provides a urinary ureteral stent that can prevent pulling, which can reduce the pulling force, the stability of the stent support and the probability of displacement.

[0006] The urinary ureteral stent can prevent being pulled, and the device comprises a lower stent, a sleeve pipe slidably connected to the lower stent, and an upper stent slidably connected to the sleeve pipe, the upper stent and the lower stent are both spiral curled at one end away from each other, the upper stent and the lower stent are both hollow and are provided with a plurality of liquid inlets at the one end away from each other, elastic ropes are connected between the upper stent and the lower stent and are equidistantly distributed, the elastic ropes are located in the sleeve pipe, reinforcing components are arranged on the upper stent and the lower stent for reinforcing and preventing displacement from both ends, and displacement preventing components are arranged on the sleeve pipe, the lower stent and the upper stent for reinforcing and preventing displacement from the middle.

[0007] As an improvement of the above scheme, the reinforcing components comprise air bags, the two air bags are fixedly connected to the one end away from each other of the upper stent and the lower stent respectively, an air pipe is communicated between the two air bags, the air pipe is located in the sleeve pipe, the lower stent and the upper stent, and the bottom end of the air pipe is communicated with an inflation interface.

[0008] As an improvement of the above scheme, the displacement preventing components comprise elastic pieces equidistantly distributed in a circle, the elastic pieces are fixedly connected to the sleeve pipe, the elastic pieces are connected to the sleeve pipe by the top end and the bottom end, the lower stent and the upper stent are both fixedly connected with connecting rods on the side close to each other, the connecting rods are fixedly connected with extrusion blocks on the side close to each other, the elastic pieces are fixedly connected with fixed blocks, and the fixed blocks are fixedly connected with vertically symmetrical extrusion rods.

[0009] As an improvement of the above scheme, the upper stent and the lower stent are both provided with sealing rings on the side close to each other.

[0010] As an improvement of the above scheme, the upper stent and the lower stent are provided with a plurality of protrusions at the spiral curling positions.

[0011] As an improvement of the above scheme, the extrusion blocks are conical, and the extrusion rods are extruded with the adjacent extrusion blocks.

[0012] The device has the following advantages: the device is installed in the patient's body, the upper end of the upper stent is located in the kidney, the lower end of the lower stent is located in the bladder, the urine is guided, the air bags are inflated to make the lower stent and the upper stent more closely contact the kidney and the bladder, the device is reinforced from both ends to prevent displacement caused by pulling, the lower stent or the upper stent can slide in the sleeve pipe under the action of the elastic rope during use, the pulling force is reduced, the displacement of the device or the discomfort of the patient caused by the excessive pulling force is avoided, the middle part of the elastic piece is also arched outward to contact the inner wall of the ureter when the lower stent or the upper stent slides, the device is reinforced from the middle part, and the displacement of the device caused by pulling is further prevented. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the device.

[0014] Figure 2 This is a schematic diagram of the covering structure of the lower support, sleeve, upper support, and elastic rope of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the trachea, airbag, and upper support components of this utility model.

[0016] Figure 4 This is a schematic diagram of the covering structure for the lower support, airbag, and inflation interface of this utility model.

[0017] Figure 5 This is a schematic diagram of the covering structure for the trachea, airbag, and inflation interface of this utility model.

[0018] Figure 6 This is a three-dimensional structural diagram of the connecting rod, extrusion block, and fixing block of this utility model.

[0019] Figure 7 This is a three-dimensional structural diagram of the components of this utility model, such as the spring sheet, fixing block, and compression rod.

[0020] The labels in the diagram are as follows: 1. Lower support, 2. Sleeve, 3. Upper support, 4. Elastic rope, 5. Air tube, 51. Airbag, 6. Inflation interface, 7. Spring, 8. Connecting rod, 9. Compression block, 10. Fixing block, 11. Compression rod. Detailed Implementation

[0021] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0022] Example 1: A ureteral stent for urinary use that is resistant to pulling, such as Figures 1-7 As shown, the device includes a lower support 1, a sleeve 2, an upper support 3, an elastic rope 4, a reinforcement component, and an anti-displacement component. The sleeve 2 is slidably connected to the upper part of the lower support 1, and the upper support 3 is slidably connected to the upper part of the sleeve 2. The ends of the upper support 3 and the lower support 1 that are far apart from each other are both spirally coiled structures. Both the upper support 3 and the lower support 1 are hollow structures, and multiple liquid inlets are opened at the ends that are far apart from each other. A sealing ring is provided on the side of the upper support 3 and the lower support 1 that is close to each other. The sealing ring is in contact with the inner wall of the sleeve 2. Multiple protrusions are provided at the spirally coiled positions of the upper support 3 and the lower support 1. Elastic ropes 4 are equidistantly distributed between the upper support 3 and the lower support 1. The elastic ropes 4 are located inside the sleeve 2. The lower support 1 and the upper support 3 are provided with reinforcement components for reinforcing from both ends to prevent displacement. The sleeve 2, the lower support 1, and the upper support 3 are provided with anti-displacement components for reinforcing from the middle section to prevent displacement.

[0023] In use of the device, the staff installs the device into the patient's body, so that the upper end of the upper bracket 3 is placed in the kidney, the lower end of the lower bracket 1 is located in the bladder, the spiral curl structure at the tail end of the lower bracket 1 and the upper bracket 3 serves as a limiting structure, and the protrusions provided at the spiral curl positions also provide friction for the brackets, avoiding disengagement of the lower bracket 1 and the upper bracket 3 from the bladder and the kidney. When installing the device, the reinforcing assembly can be reinforced from both ends of the device to prevent displacement of the device. After the device is installed, the urine of the kidney can enter the upper bracket 3 through the liquid inlet, and the urine is guided through the channel formed by the upper bracket 3, the sleeve 2 and the lower bracket 1. During use of the device, if the patient moves greatly to cause the device to be pulled, the lower bracket 1 or the upper bracket 3 can slide in the sleeve 2 under the action of the elastic rope 4, thereby slowing down the pulling force and avoiding that the pulling force is too large to cause displacement of the device or discomfort to the patient. When the lower bracket 1 or the upper bracket 3 slides to buffer the pulling force, the anti-displacement assembly can also be reinforced from the tail end of the middle section of the device, further avoiding displacement of the device due to pulling.

[0024] In example 2, as shown in Figure 3 , Figure 4 and Figure 5 , the reinforcing assembly comprises a trachea 5, an air bag 51 and an inflation interface 6, the air bag 51 is fixedly connected to the end of the upper bracket 3 and the lower bracket 1 away from each other, the air tube 5 is connected between the two air bags 51, the air tube 5 is located in the sleeve 2, the lower bracket 1 and the upper bracket 3, and the lower end of the air tube 5 is connected with the inflation interface 6.

[0025] In use of the device, when the device is installed in the patient's body, the staff inflates the inflation interface 6, the inflation interface 6 introduces air into the air tube 5, the air is filled into the air bag 51 through the air tube 5 to make the air bag 51 expand, and the air bag 51 expands to make the lower bracket 1 and the upper bracket 3 more closely fit the bladder and the kidney at the part of the bladder and the kidney, thereby reinforcing from both ends of the device to prevent displacement of the device due to pulling.

[0026] As shown in Figure 6 and Figure 7 , the anti-displacement assembly comprises a spring 7, a connecting rod 8, a pressing block 9, a fixed block 10 and a pressing rod 11, the spring 7 is fixedly connected to the sleeve 2 in a circumferential equidistant manner, the spring 7 is connected to the sleeve 2 at both ends, the connecting rod 8 is fixedly connected to the side of the lower bracket 1 and the upper bracket 3 close to each other, the pressing block 9 is fixedly connected to the end of the connecting rod 8 close to each other, the fixed block 10 is fixedly connected to the middle of the spring 7, the pressing rod 11 is symmetrically fixedly connected to the fixed block 10, the pressing block 9 is conical, and the pressing rod 11 is in pressing cooperation with the adjacent pressing block 9.

[0027] In use of the device, when the lower support 1 or the upper support 3 slides in the sleeve 2, the extrusion block 9 is also driven to move by the connecting rod 8, the extrusion block 9 moves upward or downward to push the extrusion rod 11 to move outward, the extrusion rod 11 moves outward to push the elastic sheet 7 to deform through the fixed block 10, the middle part of the elastic sheet 7 arches outward to contact the inner wall of the ureter, and then the device is reinforced from the middle part, and further displacement of the device is prevented.

[0028] The above embodiment is only a preferred embodiment of the present application, and is not used to limit the scope of the present application, so equivalent changes made according to the content of the present application claims shall be included in the scope of the present application claims.

Claims

1. A urinary ureteral stent which is resistant to pulling, characterized in that, The utility model provides a kind of support, including lower support (1), lower support (1) is slidably connected with sleeve pipe (2), sleeve pipe (2) is slidably connected with upper support (3), and the end of upper support (3) and lower support (1) away from each other is spiral crimp structure, upper support (3) and lower support (1) are hollow structure, and the end away from each other is opened multiple liquid inlets, and upper support (3) is connected with the equidistant distribution elastic rope (4) between lower support (1), and elastic rope (4) is located in sleeve pipe (2), and lower support (1) and upper support (3) are equipped with the reinforcing assembly for reinforcing from both ends to prevent displacement, sleeve pipe (2), lower support (1) and upper support (3) are equipped with the anti-shift component for reinforcing from middle section to prevent displacement.

2. The pull-resistant urinary ureteral stent according to claim 1, wherein, The reinforcing assembly includes air bag (51), two air bags (51) are fixedly connected to the end of upper support (3) and lower support (1) away from each other, and air pipe (5) is located in sleeve pipe (2), lower support (1) and upper support (3) between two air bags (51) are communicated, and the bottom end of air pipe (5) is communicated with inflating interface (6).

3. The pull-resistant urinary ureteral stent according to claim 2, wherein the stent is configured to be inserted into the urinary tract of a patient in a straightened configuration and to expand to the expanded configuration when the stent is in the urinary tract of the patient. The anti-shift component includes circumferentially equidistant distribution spring (7), circumferentially equidistant distribution spring (7) is fixedly connected to sleeve pipe (2), spring (7) is connected with sleeve pipe (2) by top end and bottom end, and the side of lower support (1) and upper support (3) close to each other is fixedly connected with connecting rod (8), the end of connecting rod (8) close to each other is fixedly connected with extrusion block (9), spring (7) is fixedly connected with fixed block (10), and fixed block (10) is fixedly connected with vertical symmetry extrusion rod (11).

4. The pull-resistant urinary ureteral stent according to claim 3, wherein the stent is configured to be inserted into the urinary tract of a patient in a straightened configuration and to expand to the expanded configuration when the stent is in the urinary tract of the patient. The side of upper support (3) and lower support (1) close to each other is equipped with sealing ring, and sealing ring is attached with sleeve pipe (2) inner wall.

5. The pull-resistant urinary ureteral stent according to claim 4, wherein the stent is configured to be inserted into the urinary tract of a patient in a straightened configuration and to expand to the expanded configuration when the stent is in the urinary tract of the patient. The spiral crimp position of upper support (3) and lower support (1) is equipped with multiple protrusions.

6. The pull-resistant urinary ureteral stent according to claim 5, wherein the stent is configured to be inserted into the urinary tract of a patient in a straightened configuration and to expand to the expanded configuration when the stent is in the urinary tract of the patient. Extrusion block (9) is conical, and extrusion rod (11) is extruded with adjacent extrusion block (9).

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