System for identifying premature rupture of membrane during preg

Details System for identifying premature rupture of membrane during preg System for identifying premature rupture of membrane during preg

1999-07-13

2000-11-21

O'Connor, Cary

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

600573, 600584, A61B 500

Patent

active

061495905

ABSTRACT:
An article for the identification of the premature rupture of a membrane during pregnancy is disclosed. In its preferred embodiment, the article comprises a pad having an upper outer layer, a lower outer layer, and an intermediate pH-responsive component. A double-sided adhesive strip is attached to the lower outer layer. The upper outer layer is composed of a liquid permeable material. Intermediate of the upper out layer and the inner outer layer is a pH-sensitive component. This intermediate layer is a pH-sensitive material and may be one of a variety of such materials, although a preferred material is nitrazine paper. In the presence of an alkaline fluid, such as amniotic fluid, the pH-sensitive material responds by turning to a purple-blue color. The change in color acts as a visual indicator to the wearer of the possible presence of amniotic fluid outside of the amniotic sac. As an alternate embodiment, the article may be fitted with a slide for gathering amniotic fluid, thus allowing the examining physician to make a visual evaluation.

REFERENCES:
patent: 5063930 (1991-11-01), Nucci
patent: 5823953 (1998-10-01), Roskin et al.
patent: 5823954 (1998-10-01), Chaffringeon
patent: 6042543 (2000-03-01), Warwick et al.

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