Thin film piezoelectric polymer sensor
US6261237A · kind A · utility
63Cited by
98References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1998 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Aug 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A thin film piezoelectric polymer acoustic sensor for the passive detection of heart and blood flow sounds is described. Sensors may have initially slack film components which are tented by the mass of a housing when a sensor is positioned on acoustic medium. Enhanced sensor performance is provided by accommodation of the sensor spring constant to the spring constant of human flesh. Sensor performance may be enhanced by a combination of physical parameter ranges. A plurality of sensors may compose a linear array or an array aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.