Surgery – Truss – Pad
Patent
1991-03-11
1993-07-13
Cohen, Lee S.
Surgery
Truss
Pad
356 41, A61B 500
Patent
active
052264173
ABSTRACT:
An apparatus for detecting movement in patients coupled to pulse oximeters and a method for using the signal generated by the apparatus to filter out the effects of motion from the test results generated by the pulse oximeter are disclosed. In a preferred embodiment, a piezoelectric film located in close proximity to the pulse oximeter's sensor provides a voltage signal whenever movement occurs near the sensor. This voltage signal is processed and the resulting signal is used to correct the oximeter's measurements. In addition to piezoelectric film, accelerometers and strain gauges are also usable to provide a signal indicative of motion.
REFERENCES:
patent: B14653498 (1989-04-01), New, Jr.
patent: 4802486 (1989-02-01), Goodman
patent: 4830014 (1989-05-01), Goodman
patent: 4869254 (1989-09-01), Stone
patent: 4911167 (1990-03-01), Corenman
patent: 5025791 (1991-06-01), Niwa
patent: 5099702 (1992-03-01), French
Nellcor pamphlet "Nellcor redefines pulse oximetry. Introducing the Nellcor N-200 with ECG synchronization".
Nellcor pamphlet "N-200. Nellcor N-200 pulse oximeter with C-LOCK ECG synchronization".
"C-LOCK ECG Synchronization Principles of Operation", Pulse Oximetry Note Number 6, Reference Note, Nellcor Inc., 1988.
Briggs Deborah A.
Clark Robert L.
Merchant Adnan I.
Swedlow David B.
Warring Jessica A.
Cohen Lee S.
Nellcor, Inc.
Pontius Kevin
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