Genital tract dilating device for artificial abortion and induced labor

Abstract

The invention provides a genital tract dilating device for artificial abortion and induced labor. A cervical dilator is made from memory alloy wires. The cervical dilator is put in a cervix uteri of apatient at a low-temperature phase, liquid is injected in a rubber hose, the deformation of the memory ally wires is controlled, and the memory ally wires deform to be in the shape of a helical spring at a high-temperature phase, so that the cervix uteri is dilated. Due to the deformation characteristics of the memory alloy wires, the cervix uteri of the patient is slowly dilated in the deformation course, so that damage to the cervix uteri is avoided; and besides, a water sac at the end of the cervix uteri dilator is used for performing mechanical irritation, and uterine contraction is induced, so that the induced labor time is shortened, and the operation risk is reduced.

Description

technical field [0001] The invention relates to the field of auxiliary devices for early and mid-term pregnancy termination operations in obstetrics and gynecology, specifically a reproductive tract expansion device for artificial abortion and induction of labor, which is used for rapid non-invasive and painless expansion of the reproductive tract during abortion and mid-term pregnancy induction . Background technique [0002] Due to the increasing incidence of women's unwanted pregnancy, the rate of induced abortion and induced labor has also increased, and the proportion of primipara and unmarried women has increased year by year, which has a certain negative impact on women's physical and mental health. More and more studies have shown that taking appropriate measures to promote cervical softening, dilation and maturation during induced abortion or induction of mid-trimester pregnancy can effectively reduce the risk of complications such as abortion syndrome and cervical ...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing artificial abortion or mid-term pregnancy induction, primiparous women and unmarried women often need instruments or drugs to assist in dilating the cervix. Using different types of traditional cervical dilation rods to mechanically and passively dilate the cervix can easily damage the cervix and cause cervical fissure. Injuries, bleeding, cervical adhesions, rough and violent operations may even lead to uterine perforation, and multiple types of uterine expansion rods repeatedly entering the uterine cavity may cause intrauterine infection; the positioning of the cervical dilation balloon is not accurate, the operation is difficult, and the expansion effect is not good. Obviously; the disposable cervical dilator needs to indwell the device to the cervix for 4-12 hours, which increases the rate of female reproductive tract infection; prostaglandin drugs such as misoprostol tablets can stimulate cervical cells and increase the activity of collagenase and elastase , increase the rate of cervical collagen cleavage, thereby softening the cervix, enhancing uterine tension and intrauterine pressure, and achieving the effect of dilating the cervix, but it needs to be administered 2-24 hours before the operation, and it has a contraction effect on the pregnant uterus, and the intensity of uterine contraction cannot be controlled , causing significant pain to the patient

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