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:
Nov. 22, 1994
Filed:
Feb. 25, 1993
Per Franberg, Stockholm, SE;
Anders Lindgren, Taeby, SE;
Siemens Elema AB, Solina, SE;
Abstract
In a dual chamber pacemaker capable of stimulating the atrium and ventricle in a heart, a stimulation pulse in the atrium could be sensed as a ventricular event which cannot be distinguished from a premature ventricular contraction, so the pacemaker institutes a blanking interval in which no sensing occurs and a crosstalk interval in which sensing occurs, detections in the crosstalk interval causing the emission of a ventricular stimulation pulse with a shortened A-V interval. A dual chamber pacemaker and a method for operating same are disclosed wherein the blanking interval is optimized so as to reduce the risk of a PVC being missed and so as also to minimize the number of detected events, caused by crosstalk from the atrium, in crosstalk intervals. This is accomplished by counting, for a number of cardiac cycles, the number of detections in crosstalk intervals and forming a relationship of the count to the number of cardiac cycles. This reduction is then used to determine the length of the blanking interval.