Radiant energy – Calibration or standardization methods
Patent
1998-10-14
2000-03-21
Porta, David P.
Radiant energy
Calibration or standardization methods
G01L 2500
Patent
active
RE036620&
ABSTRACT:
A method and apparatus for testing a pulse oximeter which is based on the concept of an electrical interface between the testing instrument and the oximeter rather than an optical interface. The pulse oximeter signal processor is tested separately from the probe, and still further, the optical elements, that is, the LEDs and the photodiode, of the probe are tested separately from the probe cable. With the probe disconnected from the oximeter, a modulated electrical test signal representative of SpO.sub.2 values and other parameters is generated in response to an electrical signal from the oximeter, and the test signal is applied to the oximeter signal processor, whereby the display of the oximeter shows a value of SpO.sub.2 which is compared with the SpO.sub.2 value represented by the test signal. Independently, the probe including the probe cable, the LEDs and the photodiode are respectively and separately subjected to continuity and optical sensitivity tests. Each of the main components of the oximeter is thereby separately analyzed, and the source of a defect is isolated.
REFERENCES:
patent: 4700708 (1987-10-01), New, Jr. et al.
patent: 4831626 (1989-05-01), Watanabe et al.
patent: 4834532 (1989-05-01), Yount
patent: 4968137 (1990-11-01), Yount
patent: 5134284 (1992-07-01), Volgyesi
patent: 5136280 (1992-08-01), Heggli
patent: 5166517 (1992-11-01), Volgyesi
patent: 5278627 (1994-01-01), Aoyagi et al.
patent: 5348005 (1994-09-01), Merrick et al.
"Technical Manual Nellcor Puritan Bennett TM Pulse Oximeter Tester Model SRC-2", 1996.
Criticare--Oxygen Saturation Simulator, Special Offer Sheet plus pp. 2-1, 2-2, 2-3, and 2-4 plus Circuit Diagram Sheet 1/1 titled SpO2/ECG Simulator (Eprom Version) Oct. 6, 1991.
Novametrix TB500B Front Panel, Service Manual, p. 3, Nov. 11, 1992.
Clinical Dynamics Corporation
Costello Leo F.
Porta David P.
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