High-strength urethral stent easy to recycle

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...

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.

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