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Power Management for Implantable Medical Components

IP.com Disclosure Number: IPCOM000169462D
Publication Date: 2008-Apr-17
Document File: 2 page(s) / 82K

Publishing Venue

The IP.com Prior Art Database

Abstract

This invention relates to a method where an increase of the energy delivered from an implantable capacitor to a medical device like an implantable defibrillator can be increased by a few percent at the expense of an increase charge time.

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Greatbatch Inc.

10,000 Wehrle Drive

Clarence

,

New York

14031

PATENT DISCLOSURE

Title of Patent:  

Power management for Implantable Medical Components

Name of Inventors:

Neal Nesselbeck / Wolfram Neff 

Page Nos.- Laboratory Notebook:     Page No.

Text

This invention relates to a method where an increase of the energy delivered from an implantable capacitor to a medical device like an implantable defibrillator can be increased by a few percent at the expense of an increase charge time.

The capacitor in an implantable cardiac defibrillator is typically not in electrochemical equilibrium during charging. This is caused by the requirement to charge the capacitor in the shortest possible amount of time to minimize the time between the detection of fibrillation and the time the therapy can be applied.

As a result of the non-equilibrium charge process, the capacitor is not everywhere at the same potential when the contact pin that is in electrical communication with the device charging the capacitor is at its charging voltage. More specifically, areas of the capacitor that are further away from this contact pin are lagging behind in their voltage. Consequently, the capacitor does not have the highest possible amount of charge stored when the charging process stops at the instant the charging electronics detects the device is at charging voltage.

A way to charge these outside areas of the capacitor to their fullest potential would be to change the charging protocol to...