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:
Jun. 03, 1997
Filed:
Oct. 25, 1995
Applicant:
Inventors:
David K Swanson, Roseville, MN (US);
James P Nelson, Shoreview, MN (US);
Douglas J Lang, Arden Hills, MN (US);
Assignee:
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N / ;
U.S. Cl.
CPC ...
607-5 ; 607-7 ; 607 74 ;
Abstract
An implantable defibrillator/cardioverter which generates a biphasic waveform having a duration of at least 15-80 msec and a small 'tilt' between the leading edge and trailing edge voltages of each phase. In one embodiment, two capacitors are connected in parallel to create an effectively large capacitance to generate a slowly decaying waveform. In another embodiment, a high capacitance bipolar capacitor is used, which capacitance is at least 200 microFarads.