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. 04, 1997
Filed:
Dec. 12, 1995
Pacesetter AB, Solna, SE;
Abstract
A heart stimulator for detecting atrial tachycardia, contains a control device to which are connected an atrial detector, having a blanking period, for detecting atrial events, a ventricular stimulation unit for delivering stimulation pulses in the ventricle, a counter for generating a variable PV interval between a detected atrial event and a stimulation pulse delivered in the ventricle, a time measurement unit for measuring time between two consecutive, detected atrial events and a calculation unit which, in a test mode for determining of whether atrial tachycardia is present, is arranged to cause the counter to generate a PV interval so the PV interval plus the atrial detector's blanking period is equal to half or less than half of an adjustable threshold level PP tachycardia. The time measurement unit sends a detection signal to the control device when a defined number of measured, consecutive PP intervals is less than a defined threshold value PP for the PP interval (threshold value PP tachycardia).