SAFETY FEATURES FOR USE IN MEDICAL DEVICES

SAFETY FEATURES FOR USE IN MEDICAL DEVICES

A therapy system for applying an electrical signal to an internal anatomical feature of a patient includes an implantable component and an external component. The medical device can be checked for safety issues by periodically initiating a sequence of tests of an H-bridge circuit, and, during each t...

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Bibliographische Detailangaben
Hauptverfasser: SPAR GREGORY PAT, MAAS RANDY, WEIJAND KOEN JACOB, ELLSWORTH STEVE, ALMENDINGER AL
Format: Patent
Sprache:eng
Schlagworte:
ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
ULTRASOUND THERAPY
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Beschreibung
Zusammenfassung:A therapy system for applying an electrical signal to an internal anatomical feature of a patient includes an implantable component and an external component. The medical device can be checked for safety issues by periodically initiating a sequence of tests of an H-bridge circuit, and, during each test, monitoring a current flow through a sensing resistor electrically connected between a sensing connection of the H-bridge circuit and a ground. Current flow through the sensing resistor indicates that both series electrical switches within at least one of the two pairs of series electrical switches are active during that test.