Implanting device of prostate wallstent

Abstract

The invention discloses an implanting device of a prostate wallstent. The prostate wallstent and the implanting device are both made of a shape memory alloy material. The implanting device comprises afirst stent base. The implanting device conveys the prostate wallstent through an endoscope. When the prostate wallstent is conveyed, the first stent base and the prostate wallstent sleeve the endoscope side by side, and the near end of the prostate wallstent abuts against the far end of the first stent base. When the temperature is lower than the phase change point of the prostate wallstent, theprostate wallstent can be closely fixed to the endoscope; when the temperature is higher than the phase change point of the prostate wallstent, the prostate wallstent can expand to be disengaged fromthe endoscope; when the temperature is higher than the phase change point of the first stent base, the first stent base can be closely fixed to the endoscope; when the temperature is lower than the phase change point of the first stent base, the first stent base can expand to be disengaged from the endoscope. A long sheath pipe which probably gets stuck in the endoscope completely does not exist,and use is safe.

Description

technical field [0001] The invention relates to the technical field of urological medical instruments, in particular to a device for placing a prostate stent. Background technique [0002] Prostatic hyperplasia is a common disease in elderly men. It is a progressive disease that can cause urethral stricture, poor urination, or even complete occlusion. With the aging of the population, the incidence rate increases year by year. According to relevant domestic statistics, among men over 50 years old About 35-50% of people have different degrees of benign prostatic hyperplasia. At present, transurethral resection of the prostate is mainly used for benign prostatic hyperplasia. Because of the characteristics of no trauma on the body surface and quick recovery, the treatment rate of benign prostatic hyperplasia in developed countries is 60-90%, and it is the most important treatment method. However, this method It is still a traumatic operation, which is highly affected by the pr...

AI Technical Summary

Problems solved by technology

[0006] At present, the composition of nickel-titanium memory alloy prostate stents in the market is to install the memory alloy stent on the delivery system, and the delivery system is used on the endoscope. The advantage is that the existing endoscope system is used, which is convenient for matching. The disadvantage is that when it is used on a rigid endoscope, the hard endoscope itself will cause greater damage to the tissue, and when it is matched with a soft endoscope, the sheath of the delivery system itself will increase the endoscope The rigidity increases the risk of tissue damage. Secondly, the diameter of the flexible lens is generally large, and the outer skin of the flexible lens is made of a relatively soft material, which leads to a large friction coefficient between the flexible lens and the sheath. , it is necessary to apply lubricating oil such as silicone oil to put the delivery system on the soft mirror, and once there is a missing part, it is easy to cause the delivery system and the soft mirror to be stuck, which will bring great trouble to the removal of the delivery system , and even damage to the endoscope occurred

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