A device for measuring cervical dilation

Abstract

A device for measuring cervical dilation, comprising an airway, a waterway and a scale, the airway is used for vacuuming to absorb on the surface of the internal os of the cervix, the waterway is set in the airway for providing buffering and indicating pressure changes, the scale The scale is sleeved outside the airway, and the outer wall of the airway is provided with a scale, and the end edge of the scale cooperates with the scale to indicate the degree of dilatation of the cervix. It can be used to measure cervical dilation, is convenient to use, can replace digital examination and avoid individual deviation and inconsistency of digital examination, and does not need to adopt complicated mechanical / electronic system.

Description

technical field

[0001] The invention relates to a device for measuring cervical dilation. Background technique

[0002] Cervical dilation refers to the regular uterine contractions of pregnant women during labor, pulling the uterine muscles and surrounding fibers of the cervix, and the amniotic sac in front of the fetal presentation is wedge-shaped, resulting in the upward and outward expansion of the cervix. The tube gradually shortens until it disappears. The external os of the cervix is ​​usually only the size of a fingertip. As the labor progresses, the external os of the cervix expands to a diameter of 10 cm, which can allow the full-term fetal head to pass through. This process is also known as opening the cervix.

[0003] The dilation process of the cervix is ​​relatively slow. It takes an average of 8 hours from labor to dilation of the cervix, and an average of 4 hours from dilation of the cervix to 6 cm to 10 cm. Under normal circumstances, some drugs for pain w...

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