Disposable Cervical Dilation Balloon Catheter

Abstract

The invention relates to a disposable cervical dilatation balloon catheter, which effectively solves the problem of discomfort caused by existing cervical dilatation; the technical solution includes a catheter, the upper end of which is hemispherical, and the upper half of the catheter The outside of the catheter is arranged with a first balloon, a second balloon and a third balloon in sequence from top to bottom, a rotating shaft is arranged inside the catheter, and two sections of external thread are provided on the upper end of the rotating shaft, and each section of external thread is screwed with a first Piston, the first water injection pipe connected with the lower cavity and the second balloon is provided on the left tube wall of the catheter, and the first water injection tube connected with the first balloon, the upper chamber, and the third balloon is provided on the right tube wall of the catheter. The second water injection pipe connected with the lower end chamber, the lower end chamber is provided with a second piston set on the rotating shaft, the second piston is connected with the lower end of the guide tube through a compression spring, and the part of the rotating shaft placed outside the guide tube is provided with a winding wheel , the left and right sides of the reel respectively have a stay cord, and the other end of the stay cord is fixed on the second piston.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a disposable cervical dilation balloon catheter. Background technique [0002] Cervical dilatation balloon catheters are suitable for mechanical dilation of the cervix with poor maturity before labor induction. Cervical dilation balloon catheters usually need to be placed in the human body for a period of time. Gradually open to achieve the effect of induction of labor. The existing cervical dilatation balloon catheters all use one-time injection to prop up the balloon. This method directly opens the patient's cervix mechanically. Although the expansion speed is fast, However, this rigid expansion method will bring great discomfort to the patient. Therefore, a balloon catheter that can flexibly expand the patient's cervix is ​​urgently needed at this stage. Contents of the invention [0003] In view of the above situation, in order to overcome the defects of the prior art, the p...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a disposable cervical dilation balloon catheter, which effectively solves the problem that the existing cervical dilation will cause discomfort to the patient

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