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. 05, 2007
Filed:
Dec. 13, 2003
Karin Järverud, Solna, SE;
Nils Holmström, Järfälla, SE;
Anders Björling, Järfälla, SE;
Asa Uhrenius, Stockholm, SE;
Sven-erik Hedberg, Kungsängen, SE;
Göran Budgifvars, Spanga, SE;
Hans Strandberg, Sundbyberg, SE;
Karin Järverud, Solna, SE;
Nils Holmström, Järfälla, SE;
Anders Björling, Järfälla, SE;
Asa Uhrenius, Stockholm, SE;
Sven-Erik Hedberg, Kungsängen, SE;
Göran Budgifvars, Spanga, SE;
Hans Strandberg, Sundbyberg, SE;
St. Jude Medical AB, Jarfalla, SE;
Abstract
An implantable bi-ventricular heart stimulating device and system, suitable for treating congestive heart failure, have a control circuit with first and second pacing circuits and first and second sensing circuits. The device operates with time cycles corresponding to normal heart cycles. The control circuit determines: (a) whether a signal typical of an evoked response to a pacing pulse delivered by the first pacing circuit is sensed within a first time interval and (b) whether a signal typical for an R-wave transferred from the second ventricle, or from some other part of the heart, to the first ventricle is detected within a first time window. The operation of the device depends on whether the conditions (a) and (b) are fulfilled.