Reliability systems for implantable cardiac defibrillator batteries

The reliability of the power sources used in implantable cardiac defibrillators is critical due to the life-saving nature of the device. Achieving a high reliability power source depends on several systems functioning together. Appropriate cell design is the first step in assuring a reliable product...

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Bibliographic Details
Published in:Journal of power sources 1995-03, Vol.54 (1), p.115-119
Main Author: Takeuchi, Esther S.
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Implantable medical applications
Medical sciences
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Reliability
Technology. Biomaterials. Equipments. Material. Instrumentation
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Summary:The reliability of the power sources used in implantable cardiac defibrillators is critical due to the life-saving nature of the device. Achieving a high reliability power source depends on several systems functioning together. Appropriate cell design is the first step in assuring a reliable product. Qualification of critical components and of the cells using those components is done prior to their designation as implantable grade. Product consistency is assured by control of manufacturing practices and verified by sampling plans using both accelerated and real-time testing. Results to date show that lithium/silver vanadium oxide cells used for implantable cardiac defibrillators have a calculated maximum random failure rate of 0.005% per test month.
ISSN:0378-7753
1873-2755
DOI:10.1016/0378-7753(94)02050-D