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:
May. 09, 2000
Filed:
May. 06, 1998
Indra B Nigam, Lake Oswego, OR (US);
Abstract
A device for detecting pathological tachycardia, in particular for use with an implantable device for terminating tachycardias, having a classifican device, responding to at least one electrical signal derived from the heart, which if the classification criterion is met outputs an output signal indicating pathological tachycardia, having a plurality of classification devices for checking various classification criteria within one heart interval or on the basis of the evaluation of preceding heart intervals; a controllable counter that is connected to the outputs of the classification devices via first logic means; means for incrementing the counter state of the counter by a predetermined counting amount each time, if during a heart interval at least one of the primary classification signals appears; means for keeping the counter state constant or decrementing it by a predetermined counting amount, if no primary classification signal appears within the heart interval; and discriminator means, which output the output signal indicating the occurrence of pathological tachycardia if the counter state of the counter exceeds a predetermined value.