Patent · US Expired

Apparatus and method for monitoring respiration

US5273036A · kind A · utility

307Cited by

9References

19Claims

0Family size

Assignee

PPG Industries, Inc. · US

Inventors

Harald Kronberg · Staufen, DE
Helmut Leist · Freiburg im Breisgau, DE

Key dates

Filing date	Apr 20, 1993
Grant date	Dec 28, 1993
Priority date	—
Expiry date	Apr 20, 2013

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B5/1491
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The apparatus for monitoring respiration comprises a photoplethysmographic sensor whose LED transmitter element(s) is/(are) excited by a monitoring unit with a specified control power and/or control signal sequence or frequency. By means of a signal processing unit, both the frequency and depth of respiration can be measured, as can the pulse frequency or oxygen saturation of the peripheral blood. The use of such an apparatus guarantees significantly more reliable monitoring of respiration than the impedance pneumographic methods of the prior art.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.