High-strength urethral stent easy to recycle

A high-strength and easy-to-recover technology, applied in the field of medical devices, can solve the problems of easy formation of stones, difficult positioning of stents, and easy reduction of support strength, and achieve the effect of ensuring positioning stability, bending resistance and telescopic extension ability.

Pending Publication Date: 2021-08-24
上海惠凯医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the stents in the prior art are single-wire braided stents or bare stents. The single-wire braided stent is prone to urinary incontinence and displacement after implantation, and the overall support strength is easy to decrease during use, and it needs to be recycled when it is recycled. The stent is drawn into filaments and recycled. It is difficult to recycle when the patient feels unwell or when the service life of the stent is reached, which increases the difficulty of the operation and is easy to form stones. Difficult positioning, not easy to recycle, etc.

Method used

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  • High-strength urethral stent easy to recycle
  • High-strength urethral stent easy to recycle
  • High-strength urethral stent easy to recycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The urethral stent in this example belongs to medical equipment, specifically a kind of easy-to-recover high-strength urethral stent, which is used to be placed in the patient’s urethra. The body is unobstructed, so that the patient can urinate smoothly. Among them, the definition of orientation in this application is specifically: the proximal end is the end of the bracket that is close to the operator when the operator places the bracket, and the far end is the end of the bracket that is far away from the operator when the operator places the bracket. figure 1 It can also be seen that specifically, the left end of the bracket in the figure is the proximal end, and the right end is the distal end.

[0035] Among them, specifically, see as Figure 1-6 As shown, the urethral stent delivery device of this embodiment specifically includes: a stent body, the stent body includes a guide section 1, a transition section 2 and an anchor section 3 arranged sequentially from the...

Embodiment 2

[0047] See attached Figure 1-5 , 7-8, are basically the same as the structure of the stent in Example 1, including a stent body, which includes a guide section 1, a transition section 2 and an anchor section 3 arranged sequentially from the proximal end to the distal end, and the outer diameter of the anchor section 3 greater than the outer diameter of the guide section 1, one end of the transition section 2 is connected to the guide section 1, and the other end is connected to the anchor section 3, and the outer diameter of the transition section 2 gradually increases from one end to the other end, and the outer diameter of the anchor section 3 is The proximal end gradually becomes smaller toward the distal end, and the main body of the stent is an integrally formed structure. The anchoring section 3 is composed of a plurality of irregular annular structures 31 , and two adjacent irregular annular structures 31 are connected by a bent connection section 32 . The distal end ...

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Abstract

The invention discloses a high-strength urethral stent easy to recycle, and the stent comprises a stent body; the stent body comprises a guiding section, a transition section and an anchoring section which are sequentially arranged from the near end to the far end; the outer diameter of the anchoring section is greater than that of the guiding section, one end of the transition section is connected with the guiding section, and the other end of the transition section is connected with the anchoring section; the outer diameter of the transition section is gradually increased from one end to the other end, the outer diameter of the anchoring section is gradually decreased from the near end to the far end, and the stent body is of an integrally-formed structure. When the stent changes from the guide section to the anchoring section through the transition section, the outer diameter of the stent is gradually increased, so that the anchoring section can be limited at a bladder neck opening after entering the bladder neck due to the size difference; due to the fact that the far end of the anchoring section of the support is in an inward-contracting shape, the sheath tube is arranged at the far end of the anchoring section of the support, the support can be smoothly contracted into the sheath tube, and guiding and recycling of the support are achieved.

Description

technical field [0001] The invention relates to medical equipment, in particular to an easy-to-recover high-strength urethral support. Background technique [0002] Urethral stenting has been greatly developed in my country in recent years. At present, the commonly used clinical method is to place a urethral stent at the stricture of the urethra to open the stricture or obstruction of the urethra. This stent is made of stainless steel, synthetic fiber silica gel or nickel-titanium alloy. It can be placed in the stricture of the urethra through the cystoscope to expand the narrow and closed posterior urethra. After recovery of voiding function. [0003] Most of the stents in the prior art are single-wire braided stents or bare stents. The single-wire braided stent is prone to urinary incontinence and displacement after implantation, and the overall support strength is easy to decrease during use, and it needs to be recycled when it is recycled. The stent is drawn into fila...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/04A61F2/90
CPCA61F2/04A61F2/90A61F2002/047A61F2002/8483
Inventor 周卫超程国政陈朝晖刘俊陆冬润孙高斌
Owner 上海惠凯医疗科技有限公司
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