A cervical auxiliary dilator

Abstract

The invention discloses an auxiliary cervical dilator, which comprises an inner guiding tube and an outer guiding tube. A cervical dilation balloon is arranged on the outer side of the outer guiding tube near its head end, and a vulva limiting balloon is arranged near the tail end. The outer guiding tube There are two water injection channels connected to the cervical dilation balloon and the vulva limit balloon in the tube wall of the outer guide tube, and the water injection port I and the water injection port II connected with the two water injection channels are provided on the tube wall of the outer guide tube. A uterine-limiting balloon is provided on the outside of the inner guide tube close to its head end, and a water injection port III connected with the uterine-limiting balloon is provided at the tail end of the inner guide tube through the water injection channel set in the tube wall. The tail end protrudes from the outer guide tube and is connected to the drawing plate; the guide tube is provided with a positioning pin for fixing the position of the inner guide tube. The invention can accurately restrict the cervical dilatation balloon to the cervix, effectively promote the dilation of the cervix, and can properly dilate the internal os of the cervix without damaging the cervix, and is safe and convenient to use.

Description

technical field [0001] The invention relates to the technical field of medical auxiliary devices, in particular to an auxiliary cervical dilator. 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 external force. A...

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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