Apparatus and method for non-contacting detection of respiration
US5509414A · kind A · utility
47Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1994 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Sep 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/105
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for detecting air flow at the mouth and nose of a subject, including a transducer for converting electrical signals into ultrasound waves and vice versa, means for directing the ultrasound waves toward the mouth and nose of the subject and receiving return waves, and a detector to analyze electrical signals converted by the transducer from the return ultrasound waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.