Surgery – Diagnostic testing – Measuring or detecting nonradioactive constituent of body...
Patent
1996-09-09
1999-10-05
Nasser, Robert L.
Surgery
Diagnostic testing
Measuring or detecting nonradioactive constituent of body...
600323, 600324, 600336, 600310, 356 41, A61B 500
Patent
active
059614501
ABSTRACT:
The present invention provides a medical sensor for detecting a blood characteristic. The sensor includes a transducer for producing an analog signal related to the blood characteristic. The analog signal is converted into a transmission signal which is in amplitude-independent form for transmission to a remote analyzer. In one embodiment, a current-to-frequency converter converts a signal from a pulse oximeter sensor into a frequency signal which can be transmitted over a transmission line to a remote pulse oximeter.
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Bernstein Michael
Merchant Adnan I.
Nasser Robert L.
Nellcor Puritan Bennett Incorporated
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