Catheter for measuring intrauterine

Details Catheter for measuring intrauterine Catheter for measuring intrauterine

A - Human Necessities

61

M

128/127, 128/2

A61M 25/00 (2006.01)

Patent

CA 1134704

CATHETER FOR MEASURING INTRAUTERINE PRESSURE Abstract of the Disclosure A catheter is disclosed for measuring the intra- uterine pressure of a woman in labor. It comprises an elongated flexible tube which is inserted into the uterus through a curved guide tube adapted to be inserted through the vagina and cervix of a woman in labor. The catheter tube contains a sterile liquid and is closed at both ends by a seal which is capable of transmitting pressure from the liquid within the catheter to an external liquid. In a pre- ferred embodiment, a limp balloon is used to couple the catheter tube to a strain gauge or the like for measuring pressure. The catheter end within the uterus includes a number of small holes and a capillary material within the tube to prevent loss of the catheter liquid. Alternatively, and particularly where it is desired not to rupture the amniotic membrane, a second limp balloon may be used as the means for coupling between the catheter liquid and the uterus. Where the uterine end of the catheter includes a series of small holes, the guide tube is sealed and the catheter tube is packaged with its uterine end in a sterile liquid inside the guide tube.

316411

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