Shape memory contraceptive device on oviduct for realizing contraception

A fallopian tube and memory technology, applied in the field of female intrafallopian contraceptives, can solve the problems of easy outflow or fall off, fear of recipients, poor contraceptive effect, etc., achieves high flexibility, reduces economic burden and psychological pressure, and high mechanics the effect of strength

CN101496758AInactive Publication Date: 2009-08-05ARMY MEDICAL UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-08-05
Estimated Expiration
Not applicable · inactive patent

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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.
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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 ...

Examples

Embodiment Construction

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0034] The shape-memory fallopian tube contraceptive device for realizing contraception of the present invention includes a contraceptive suppository and an inserter, and the contraceptive suppository is made of a high-molecular polymer material with a shape-memory effect.

[0035] There are many kinds of polymer materials with shape memory effect, and the representative materials are:

[0036] 1. Polylactic acid polymer: In the invention patent of application number 200710071678.9, "The processing method of polylactic acid polymer to obtain shape memory effect of cold deformation molding", a kind of polylactic acid polymer with shape memory effect is disclosed. A met...