Non-invasive method for monitoring cardiopulmonary parameters
US4452252A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1981 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | May 26, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for monitoring cardiopulmonary events is disclosed. The basic method comprises looping an extensible conductor (14) in close encircling relation about the neck (12) of the subject (10), providing a signal indicative of the inductance of the loop, and monitoring the signal. This signal contains both qualitative and quantitative cardiopulmonary information. In accordance with another aspect of the method, an extensible conductive loop (14) is disposed in close encircling relation about the head such that the plane defined by the loop extends through the mouth. By providing a signal indicative of changes in the inductance of the loop, qualitative and quantitative information for mouth volume may be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.