Device for testing and rupturing amniotic membrane

Details Device for testing and rupturing amniotic membrane Device for testing and rupturing amniotic membrane

1981-06-01

1982-11-09

Howell, Kyle L.

Surgery

Truss

Pad

128303R_, 128307_, 128361, A61B 510, A61F 1300

Patent

active

043579450

ABSTRACT:
A medical testing device for determining whether the amniotic membrane has ruptured, and alternatively, for rupturing it. Finger-engaging means hold an elongated flexible member to the digits of a finger so as to be flexed when the finger is flexed. A lancet or hook is formed at one end of the flexible member, and projects angularly from it. The hook tip is engageable with a rupturable sac carried by the device. The sac contains a pH indicator which, when exposed to fluids in the cervix, changes color if the amniotic membrane has ruptured. The sac is ruptured by flexing the finger to tension the sac over the hook tip, so that the hook pierces the sac and exposes the pH indicator to the cervical fluid.

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patent: 3672351 (1972-06-01), Ubersax et al.
patent: 3867947 (1975-02-01), Schack
patent: 4199882 (1980-04-01), Clayman

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