Special-shaped anti-dropping seminiferous duct sterilization apparatus

Abstract

The invention discloses a special-shaped anti-dropping seminiferous duct sterilization apparatus. The sterilization apparatus is made of a macromolecule polymer material with the thermosensitivity shape memory effect, wherein the shape memory temperature is in the range from 20 to 55 DEG C; and the sterilization apparatus is of a special-shaped structure which can not freely slide along a seminiferous duct after being implanted in a seminiferous duct. The sterilization apparatus is endowed with a shape memory function by fully using the memory property of the macromolecule polymer material with the thermosensitivity shape memory effect in the manufacturing process of the sterilization apparatus; the vitrification conversion temperature of the sterilization apparatus is set at a temperature range appropriate for a human body; before implanted in the human body, the diameter of the sterilization apparatus is maintained to be matched with the inner diameter of the seminiferous duct so that the sterilization apparatus is of a linear type; and after the sterilization apparatus is implanted in the human body, the thermosensitivity memory property of the shape memory polymer material is fully exerted so that the original special-shaped structure is restored, and the seminiferous duct can better adapt to the deformation of the sterilization apparatus and correspondingly changes in shape, thus the sterilization apparatus is stably implanted in the seminiferous duct and blocks the cavity of the seminiferous duct and good contraception effect is achieved.

Description

technical field [0001] The invention relates to a male sterilizer, in particular to an S-shaped anti-falling shape memory polymer vas deferens sterilizer used in male vas deferens. Background technique [0002] Existing male contraceptives are limited, including only male condoms, hormonal contraceptives, and vasectomy. Vasectomy is a permanent contraceptive measure for men. The vas deferens is cut off and ligated, or the lumen of the vas deferens is blocked by electrocoagulation, embolism, or chemical drugs, thereby blocking the output of sperm and achieving the purpose of contraception. It is suitable for married men who require sterilization and those who are infertile due to certain genetic diseases. Conventional vasectomy has surgical complications such as bleeding, infection, painful nodules, and epididymis stasis. While electrocoagulation and chemical drugs block the lumen of the vas deferens, they often damage the tissues around the vas deferens. The current techn...

AI Technical Summary

Problems solved by technology

Conventional vasectomy has surgical complications such as bleeding, infection, painful nodules, and epididymal stasis

While electrocoagulation and chemical drugs block the lumen of the vas deferens, they often damage the tissues around the vas deferens.

The current technology of vas deferens birth control through mechanical embolization has the following defects: 1. The mechanical properties of the embolization material do not match the vas deferens tissue, the material is too soft, resulting in insufficient supporting force, and the material is too hard, resulting in local foreign body sensation and pain; 2. The diameter of the embolization device does not match the inner diameter of the vas deferens. If the diameter is too small, it will be difficult to fix and cause slippage. If the diameter is too large, it will be difficult to place and cause compression on the wall of the vas deferens. Existing in the lumen of the vas deferens can easily cause ischemia, hypoxia, and even necrosis of the wall tissue of the vas deferens

[0004] However, due to the differences in the anatomical structure and tissue mechanical properties of the male vas deferens and female fallopian tubes, and the fallopian tube IUD is usually implanted in the interstitial part of the fallopian tube where the fallopian tube meets the uterus, the muscular layer of this section is thicker, and the principle of expansion plug can be used To achieve the purpose of contraception; while the muscular layer of the vas deferens is thin, it is easy to cause severe pain through the expansion plug, and even cause the rupture of the vas deferens in severe cases, because the contraceptive safety of male vas deferens is blocked by the principle of expansion plug. Difference

Images