Auxiliary uterine cervix dilator

Abstract

The invention discloses an auxiliary uterine cervix dilator. The auxiliary uterine cervix dilator comprises an inner guiding catheter and an outer guiding catheter. A cervix dilation balloon is arranged at the position, close to the head end of the outer guiding catheter, of the outer side of the outer guiding catheter, a vulva limiting balloon is arranged at the position, close to the tail end of the outer guiding catheter, of the outer side of the outer guiding catheter, two water injection channels are arranged in the wall of the outer guiding catheter and communicated with the cervix dilation balloon and the vulva limiting balloon respectively, and a water injection port I and a water injection port II which are communicated with the two water injection channels are formed in the wall of the outer guiding catheter. A uterus limiting balloon is arranged at the position, close to the head end of the inner guiding catheter, of the outer side of the inner guiding catheter, a water injection port III is formed in the tail end of the inner guiding catheter, the water injection port III is communicated with the uterus limiting balloon through a water injection channel formed in the wall of the inner guiding catheter, and the tail end of the inner guiding catheter stretches out of the outer guiding catheter and is connected with a drawing board. The outer guiding catheter is provided with a positioning clamping pin used for fixing the inner guiding catheter. According to the auxiliary uterine cervix dilator, the cervix dilation balloon can be accurately limited at the cervix, cervix dilation is facilitated effectively, the internal opening of the uterine cervix can also be dilated appropriately, the cervix cannot be injured, and the auxiliary uterine cervix dilator 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....

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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