Capacitor for an implantable cardiac defibrillator
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United States of America Patent
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-
Jun 1, 1999
Issued Date -
N/A
app pub date -
Sep 29, 1997
filing date -
Jun 3, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A capacitor and a method for making the capacitor using ultrasonic welding to join the cathode layers together are provided. The capacitor includes a housing defining a chamber with a step provided at an inner portion of the housing. A plurality of capacitor layers each including a cathode foil, a separator and an anode foil, each having alignment holes therein to precisely fit with alignment elements housing, is positioned within the chamber, with the alignment holes mating with the alignment elements. The housing is electrically conductive for connection to the cathode foils. Each cathode foil includes a cathode tab which extends away from the foil. The cathode tabs are pressed together and ultrasonically welded to the housing step abutting the periphery of the interior of the housing.
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