The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 1988
Filed:
May. 13, 1986
Mir Imran, San Francisco, CA (US);
Mieczyslaw Mirowski, Owings Mills, MD (US);
Abstract
An implantable cardioverting system wherein a cardioverting or defibrillating voltage is automatically applied across implantable electrodes associated with the heart of a patient. The cardioverting voltage is an exponentially-decaying voltage pulse that is chopped, or broken, at high frequencies to provide a voltage wave packet formed of a plurality of high-frequency cardioverting pulses. The voltage is provided by an internal storage capacitor coupled across implantable electrode leads that is charged to a predetermined voltage level. Upon discharge, an electronic switch is clocked at frequencies preferably in excess of 1 KHz to open and close the circuit formed of the storage capacitor and electrodes.