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Anti-reflux support tube of ureter

A ureteral stent and reflux technology, which is applied in the field of medical devices, can solve problems such as renal function damage, and achieve the effects of easy use, good anti-reflux effect, and simple structure

Inactive Publication Date: 2010-07-28
THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the currently used stent tubes have a bidirectional drainage effect, in actual clinical practice, urine reflux is common. For example, when the bladder pressure increases, urine can be drained to the kidney along the ureteral stent tube. Thus causing upper urinary tract infection and hydronephrosis and other lesions, leading to renal function damage

Method used

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  • Anti-reflux support tube of ureter

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Embodiment Construction

[0018] figure 1 It is a structural schematic diagram of the present invention, figure 2 It is a structural schematic diagram of the present invention when it is countercurrent, image 3 for figure 1 A-A sectional view, Figure 4 for figure 2 B-B direction sectional view; as shown in the figure: the direction from top to bottom in the figure is the downstream direction of urine, the anti-reflux ureteral stent tube of this embodiment includes a tube body 1, and the tube body is made of common materials such as polyurethane The formed single pigtail together with nephrostomy tube or double pigtail ureteral stent tube, the elastic valve is set in the tube body 1 to form a one-way flow valve structure, and the elastic valve should be as close as possible to the end connected to the bladder to improve the use effect. The elastic matrix can be made of polytetrafluoroethylene, polyurethane, medical silicone and other materials. It has good elasticity and good molding effect. Whe...

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Abstract

The invention discloses an anti-reflux support tube of a ureter. The anti-reflux support tube of the ureter comprises a tube body, wherein an elastic valve is arranged in the tube body to form a one-way flow valve structure; through the arrangement of the elastic valve in the tube body, when urine flows downstream, the elastic valve is opened; and when urine flows back, the elastic valve is closed so as to form the one-way flow valve structure. The anti-reflux support tube of the ureter has the advantages of no influence on drainage, good anti-reflux effect, simple structure and easy use.

Description

technical field [0001] The invention relates to a medical device, in particular to an anti-reflux ureteral stent tube. Background technique [0002] Ureteral stent is a catheter placed in the ureter for drainage of urine and prevention of ureteral stenosis, etc. Ureteral stents are generally made of polyurethane and other materials, which are particularly soft when indwelling, which can reduce irritation to the ureter and bladder, and can be indwelling for a long time, up to 12 months. Therefore, ureteral stents are widely used in the treatment of diseases of the urinary system. However, because the currently used stent tubes have a bidirectional drainage effect, in actual clinical practice, urine reflux is common. For example, when the bladder pressure increases, urine can be drained to the kidney along the ureteral stent tube. Thereby causing upper urinary tract infection and hydronephrosis and other lesions, resulting in renal function damage. [0003] If a structure s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/14A61L29/02A61F2/82
Inventor 鄢俊安李为兵沈文浩周远秀
Owner THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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