Passive fetal monitoring sensor
US5140992A · kind A · utility
67Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jul 16, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4362
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is an ambulatory, passive sensor for use in a fetal monitoring system. The invention incorporates piezoelectric polymer film combined with a metallic mounting plate fastened to a belt and electrically connected to a signal processing unit by means of a shielded cable. The purpose of the sensor is to receive pressure pulses emitted from a fetus inside an expectant mother and to provide means for filtering out pressure pulses arising from other sources, such as the maternal heart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.