Auxiliary device used for cervical dilatation

Abstract

The invention discloses an auxiliary device used for cervical dilatation. The auxiliary device used for cervical dilatation comprises an inner guide pipe and an outer guide pipe which are nested, the position, close to the head end, of the outer side of the outer guide pipe is provided with a cervical dilatation balloon, the position, close to the tail end, of the outer side of the outer guide pipe is provided with a vulva limit balloon, two water injection channels are arranged in the pipe wall of the outer guide pipe and are communicated with the cervical dilatation balloon and the vulva limit balloon respectively, the pipe wall of the outer guide pipe is provided with a water filling nozzle I and a water filling nozzle II which are communicated with the two water injection channels respectively, the position, close to the head end, of the outer side of the inner guide pipe is provided with a uterus limit balloon, the tail end of the inner guide pipe is provided with a water filling nozzle III which is communicated with the uterus limit balloon through a water injection channel arranged in the pipe wall of the inner guide pipe, and the tail end of the inner guide pipe extends out of the outer guide pipe and is connected with a traction board. The auxiliary device used for cervical dilatation can limit the cervical dilatation balloon at the cervix uteri accurately, the cervical dilatation is promoted effectively, the inner opening of the cervix uteri can be expanded properly, the cervix uteri is not injured, and use is safe and convenient.

Description

technical field [0001] The invention relates to the technical field of medical auxiliary devices, in particular to an auxiliary device for dilating the cervix. Background technique [0002] Induction of labor refers to the termination of pregnancy by artificially inducing uterine contraction and cervical dilatation to expel the fetus and its appendages from the uterus due to reasons of the mother or the fetus. At present, the main methods of labor induction include rivanol induction and water bag induction. The success rate of induction of labor using rivanol is high, safe and reliable, but the disadvantage of this method is that a small number of pregnant women have fever during induction of labor; another disadvantage is the residual decidua, so that most pregnant women need curettage after induction of labor. The water bag induction method is used to inject normal saline into the water bag, and the uterus will automatically contract after the water bag is expanded by e...

AI Technical Summary

Problems solved by technology

The success rate of induction of labor using rivanol is high, safe and reliable, but the disadvantage of this method is that a small number of pregnant women have fever during induction of labor; another disadvantage is that decidua remains, so that most pregnant women need curettage after induction of labor

The water bag induction method is used to inject normal saline into the water bag, and the uterus will automatically contract after the water bag is expanded by external force. At the same time, the water bag can compress the lower uterine segment to stop bleeding, but it cannot provide the mechanical expansion of the cervix required for labor induction, and the expansion of the cervix Determining the time of labor induction

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