Shape memory contraceptive device on oviduct for realizing contraception

Abstract

The invention discloses a shape memory oviduct contraception device for realizing contraception. The device comprises a contraceptive suppository and a placer, wherein the contraceptive suppository is made of a macromolecular polymer material with shape memory effect; the shape memory polymer material is a polymer material of multistage polyurethane based on lactide and 1,4-p-dioxanone; the contraceptive suppository comprises a front section, a middle section and a tail section; the front section comprises a front part and a middle rear part, wherein the front part is of shuttle shape with smooth surface, and the middle rear part is a cylinder of which the surface is provided with a plurality of undulations; and the placer comprises an outer sleeve and an inner sheath. The device places the contraceptive suppository which maintains small diameter before placing in a perfect position inside the oviduct through a hysteroscope, and the contraceptive suppository is gradually deformed by the action of human body temperature and is restored to the initial shape of the contraceptive suppository, thereby completely blocking the oviduct to achieve the aim of contraception. The device has the advantages of convenience, high efficiency, safety, reliable contraception effect, non toxic or side effect and the like, and is applicable to popularization and application on a large scale.

Description

technical field [0001] The invention relates to an intra-fallopian tube contraceptive device for women, in particular to a shape-memory fallopian tube contraceptive device for realizing contraception. Background technique [0002] Fertility regulation is the core and important content of reproductive health. Statistics show that more than 500,000 women die each year from pregnancy and childbirth complications worldwide, and 25-30% of maternal deaths are caused by abortion of unwanted pregnancy. On the other hand, overpopulation is also a serious global problem, and how to control population growth is worrying. Because taking contraceptive measures can effectively control population growth, research and development of safe, effective, minimally invasive or non-invasive and convenient contraceptive devices and methods are of great significance to human reproductive health and population control. [0003] At present, although a variety of contraceptive drugs and contraceptive ...

AI Technical Summary

Problems solved by technology

However, tubal sterilization surgery is prone to some complications and sequelae. In addition, the operation will always cause fear for the recipient

In the 1980s and 1990s, the less invasive fallopian tube embolization and embolization were also widely used in the country, but the polymer materials used in this method were not standardized, and the effect after injection or embolization was difficult to judge. It is easy to flow out or fall off after being blocked, and the contraceptive effect is poor, so the clinical application is discontinued

Images