WO2021179775A1

WO2021179775A1 - Ureteral stent tube

Info

Publication number: WO2021179775A1
Application number: PCT/CN2021/000086
Authority: WO
Inventors: 郭振宇
Original assignee: 郭振宇
Priority date: 2020-03-11
Filing date: 2021-04-13
Publication date: 2021-09-16
Also published as: CN111346289A; CN212282496U

Abstract

A ureteral stent tube, comprising a body (10) having a tubular structure and a traction thread (20); the body (10) is provided with a first end (11) and a second end (12) which are provided oppositely, the first end (11) of the body (10) is bent into an arc shape, the second end (12) of the body (10) is bent into an arc shape, and the bending direction of the second end (12) of the body (10) is opposite to the bending direction of the first end (11) of the body (10); the traction thread (20) is fixed on the tube wall of the body (10) by means of a degradable fixing thread (30), one end of the traction thread (20) is a fixed end (21) and the other end of the traction thread is a free end (22), and the fixed end (21) of the traction thread (20) is fixed to the end portion of the first end (11) of the body (10). Compared with the prior art, the ureteral stent tube can automatically release the traction thread (20) after being placed in the body for a period of time, and the ureteral stent tube can be pulled out simply by pulling the traction thread (20) outside the body, relieving the pain caused to a patient due to a cystoscope operation and reducing the damage caused to a patient during pulling. The ureteral stent tube has the advantages of being controllable in a timely manner and convenient to pull out.

Description

Ureteral stent tube

Technical field

The invention relates to the technical field of medical devices, in particular to a ureteral stent tube.

Background technique

The ureteral stent tube is a long thin tube that leads from the kidney to the bladder. When the ureter is obstructed, the ureteral stent tube can support the ureter so that urine can drain from the kidney to the bladder.

Ureteral stent tubes are very commonly used in urological surgery. There is currently no ureteral stent tube that can be permanently indwelled in the body. The existing ureteral stent tube needs to be pulled out with the help of a rigid cystoscope, which is painful, damaged, takes a long time, and is inconvenient to pull out.

Summary of the invention

The technical problem to be solved by the present invention is to provide a ureteral stent tube that is time-controllable and easy to pull out.

The present invention provides a ureteral stent tube, which comprises a body with a tubular structure and a pulling wire. The body has a first end and a second end that are arranged oppositely. The first end of the body is bent into an arc shape, and the second end is bent The bending direction of the second end of the main body is opposite to the bending direction of the first end of the main body; One end of the pulling wire is a fixed end, and the other end is a free end. The fixed end of the pulling wire is fixed to the end of the first end of the body.

Further, the fixed end of the pulling wire is sutured and fixed to the end of the first end of the body.

Further, the free end of the pulling wire is folded toward the first end of the body.

Further, the fixing thread is sutured on the tube wall of the main body, and the pulling wire is fixed on the tube wall of the main body by tying two ends of the fixing thread.

Further, the length between the position where the fixing wire is connected to the pulling wire and the end of the first end of the body occupies one third of the total length of the body.

Further, the fixed line is a fast micro-Qiao line.

The present invention also provides another ureteral stent tube, which includes a body with a tubular structure and a pulling wire. The body has a first end and a second end that are arranged oppositely. The end is bent into an arc shape, and the bending direction of the second end of the body is opposite to the bending direction of the first end of the body; one end of the pulling wire is a fixed end, and the other end is a free end. A wire loop is connected to the fixed end of the wire, the pulling wire is sutured on the pipe wall of the body, the free end of the pulling wire passes through the wire loop on the fixed end of the pulling wire, and the body The free extension of the traction line on the tube wall is folded in multiple sections.

Further, the multi-segment folded pulling wire is tightly connected by a fixing wire.

Further, the fixed line is a fast micro-Qiao line.

Further, the traction line is folded in three sections.

Compared with the prior art, the ureteral stent tube provided by the present invention can automatically release the traction line after being placed in the body for a period of time. The ureteral stent tube can be removed by pulling the traction line outside the body, thereby avoiding recurrence. The removal of the cystoscope reduces the pain caused to the patient by the operation of the cystoscope and the damage caused to the patient during the removal, and has the advantages of controllable time and convenient removal.

Description of the drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the ureteral stent tube in embodiment 1 of the present invention;

Fig. 2 is a partial enlarged schematic diagram of A in Fig. 1.

3 is a schematic diagram of the connection between the pulling wire and the fixing wire of the ureteral stent tube in Embodiment 1 of the present invention;

4 is a schematic diagram of the three-dimensional structure of the ureteral stent tube in Embodiment 2 of the present invention;

5 is a schematic diagram of the connection between the pulling wire and the fixing wire of the ureteral stent tube in Embodiment 2 of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that, in the case of no conflict, the following embodiments and the features in the embodiments can be combined with each other.

Example 1

1 and 2, this embodiment provides a ureteral stent tube, including a tubular body 10 and a pull line 20. The body 10 is made of medical polymer materials, such as polyethylene, silicone, and silicone-based inserts. Segment copolymers and so on. The main body 10 has a first end 11 and a second end 12 opposite to each other. The first end 11 of the main body 10 is bent into an arc shape, the second end 12 is bent into an arc shape, and the direction in which the second end 12 of the main body 10 is bent The direction in which the first end 11 of the main body 10 is bent is opposite; the pulling wire 20 is fixed to the pipe wall of the main body 10 by a degradable fixing wire 30. One end of the pulling wire 20 is a fixed end 21 and the other end is a free end 22, The fixed end 21 of the wire 20 is fixed to the end of the first end 11 of the body 10. Several urinary holes 40 are provided on the wall of the main body 10.

Preferably, the fixed end 21 of the pulling wire 20 is sutured and fixed to the end of the first end 11 of the main body 10. In order to prevent the pulling wire 20 from causing allergies after the ureteral stent is implanted in the human body, the material of the pulling wire 20 in the present application is preferably a material with biocompatibility, such as silk thread. In addition, when used by men, the length of the pulling wire 20 is 22 cm; when used by women, the length of the pulling wire 20 is 12 cm. The material of the fixing thread 30 may be a degradable material, such as starch or polysaccharide. The fixed line 30 in this embodiment is a fast micro-Qiao line.

Preferably, the free end of the pulling wire 20 is folded toward the first end 11 of the body 10. The fixing wire 30 is sewn on the pipe wall of the main body 10, and the pulling wire 20 is fixed on the pipe wall of the main body 10 by tying the two ends of the fixing wire 30. As shown in FIG. 3, the specific operation is: connect a suture needle at one end of the fixing thread 30, and the suture needle penetrates into the tube wall of the body 10 and passes through the tube wall of the body 10 to sew the fixing thread 30 to the body 10 On the pipe wall, the other end of the fixing thread 30 and the end of the fixing thread 30 with the suture needle are tied to fix the pulling thread 20 on the pipe wall of the main body 10, and then the suture needles can be cut off.

The length between the connection position of the fixing wire 30 and the pulling wire 20 and the end of the first end 11 of the body 10 accounts for one third of the total length of the body 10.

In actual operation, after the ureteral stent tube is implanted in the ureter, the first end 11 of the main body 10 and the free end 22 of the pulling wire 20 are both located in the bladder, so that the pulling wire 20 is easily discharged into the body with urine after the pulling wire 20 falls off.

The function of the fixing wire 30 is to fix the traction wire 20 on the one hand to give a restraining effect to the traction wire 20; After 30 is hydrolyzed, the pulling wire 20 will gradually fall off and will be discharged into the body with urine, and the pulling wire 20 can be pulled outside the body to pull the ureteral stent tube out of the body.

It can be seen from the above technical solutions that using the ureteral stent provided by the embodiment of the present invention, after the ureteral stent is implanted in the human body, the urine can slowly hydrolyze the fixation thread 30, and it takes 4 weeks (ie, about 28 days) to pass. When the fixing thread 30 is hydrolyzed, the pulling thread 20 will gradually fall off and will be discharged out of the body with urine. At this time, if the time to pull out the ureteral stent tube is reached, the pulling thread 20 can be pulled from the urethral orifice. The ureteral stent tube implanted in the body is pulled out of the body.

It can be seen that the ureteral stent tube of this embodiment can automatically release the pulling wire 20 after being inserted into the body for a period of time, and the ureteral stent tube can be removed by pulling the pulling wire 20 outside the body, thereby avoiding performing cystoscopy. The removal reduces the pain caused to the patient by the operation of the cystoscope and the damage to the patient during the removal, and has the advantages of time controllable and convenient removal.

Example 2

4, this embodiment provides a ureteral stent tube, including a tubular body 10 and a pull line 20. The body 10 is made of medical polymer materials, such as polyethylene, silicone resin, and silicone-based block copolymers. Wait. The main body 10 has a first end 11 and a second end 12 opposite to each other. The first end 11 of the main body 10 is bent into an arc shape, the second end 12 is bent into an arc shape, and the direction in which the second end 12 of the main body 10 is bent The direction in which the first end 11 of the main body 10 is bent is opposite; compared with Embodiment 1, the difference is that one end of the pulling wire 20 is a fixed end 21, the other end is a free end 22, and the fixed end 21 of the pulling wire 20 is A wire loop 23 is connected, the pulling wire 20 is sewn on the tube wall of the main body 10, and the free end of the pulling wire 20 passes through the wire loop 23 on the fixed end 21 of the pulling wire 20. 5, the specific operation is: connect a suture needle at the free end of the pull line 20, the suture needle penetrates into the tube wall of the main body 10 and passes through the tube wall of the main body 10 to sew the pull line 20 to the tube wall of the main body 10 In the upper part, the sewing needle passes through the thread loop 23 on the fixed end 21 of the pulling thread 20, and then the sewing needle is cut off. At this time, the pulling thread 20 is fixed on the tube wall of the main body 1.

The traction line 20 that extends freely on the tube wall of the body 1 is folded in multiple sections, and the traction line 20 of the multi-segment folding is fastened and connected by a fixed line 30 (quick and micro-Qiao line in this embodiment). In this embodiment, the traction line 20 is divided into It is folded in three sections. When used by men, the length of the pulling line 20 is 29 cm; each section is about 8 cm; when used for women, the length of the pulling line 20 is 23 cm, and each section is about 6 cm.

The function of the fixing wire 30 in this embodiment is to prevent the traction wire 20 from being too long and affecting the implantation of the ureteral stent, which may cause inconvenience. After 30 is hydrolyzed, the pulling wire 20 will gradually fall off and will be discharged into the body with urine, and the pulling wire 20 can be pulled outside the body to pull the ureteral stent tube out of the body.

The above-mentioned embodiments only express the preferred embodiments of the present invention, and their descriptions are more specific and detailed, but they should not be understood as limiting the patent scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention.

Claims

A ureteral stent tube includes a body with a tubular structure and a traction line. The body has a first end and a second end that are arranged oppositely. The first end of the body is bent into an arc shape, and the second end is bent into an arc shape. The bending direction of the second end of the main body is opposite to the bending direction of the first end of the main body; it is characterized in that the pulling wire is fixed on the pipe wall of the main body by a degradable fixing wire, One end of the pulling wire is a fixed end, and the other end is a free end. The fixed end of the pulling wire is fixed to the end of the first end of the body.
The ureteral stent tube according to claim 1, wherein the fixed end of the pulling wire is sutured and fixed to the end of the first end of the body.
The ureteral stent tube according to claim 1 or 2, wherein the free end of the pulling wire is folded toward the first end of the body.
The ureteral stent tube according to claim 1, wherein the fixing thread is sutured on the wall of the main body, and the pulling wire is fixed on the wall of the main body by knotting both ends of the fixing wire .
The ureteral stent tube according to claim 1 or 2 or 4, wherein the length between the position where the fixing wire is connected to the pulling wire and the end of the first end of the body occupies the length of the body. One-third of the total length.
The ureteral stent tube according to claim 5, wherein the fixing wire is a quick micro-Qiao wire.
A ureteral stent tube includes a body with a tubular structure and a traction line. The body has a first end and a second end that are arranged oppositely. The first end of the body is bent into an arc shape, and the second end is bent into an arc shape. The bending direction of the second end of the body is opposite to the bending direction of the first end of the body; it is characterized in that one end of the pulling wire is a fixed end and the other end is a free end. A wire loop is connected to the fixed end of the pulling wire, the pulling wire is sutured on the tube wall of the body, the free end of the pulling wire passes through the wire loop on the fixed end of the pulling wire, and the pulling wire The freely extending traction line on the tube wall is folded in multiple sections.
8. The ureteral stent tube according to claim 7, wherein the multi-segment folded pulling wire is fastened and connected by a fixing wire.
8. The ureteral stent tube according to claim 8, wherein the fixing wire is a quick micro-Qiao wire.
The ureteral stent tube according to claim 7 or 8 or 9, wherein the traction line is folded into three sections.