Failsafe method and apparatus for a modular multi-parameter pati

Details Failsafe method and apparatus for a modular multi-parameter pati Failsafe method and apparatus for a modular multi-parameter pati

1998-03-04

1999-09-07

Getzow, Scott M.

Surgery

Diagnostic testing

Cardiovascular

A61B 50205

Patent

active

059479078

ABSTRACT:
A failsafe supervisor system for a processing module of a modular multi-parameter patient monitor which detects a module error or malfunction, places such module in a safe state, and alerts the operator to improper operation of the patient monitor module processor hardware or software. Upon detection of a hardware or software error, an inconsistent system/module time-base check, or other malfunctions during module operation, the impaired parameter module and its associated parameter data gathering apparatuses are powered down and the patient monitor system electrically isolates the impaired module in a failsafe manner to a safe state while permitting other parameter modules to continue with their normal operation. The failsafe supervisor system preferably includes a watchdog timer and discrete logic incorporated with the parameter module's microprocessor control system.

REFERENCES:
patent: 5375604 (1994-12-01), Kelly et al.
patent: 5590648 (1997-01-01), Mitchell et al.
patent: 5682902 (1997-11-01), Herleikson

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