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. 28, 2011
Filed:
May. 29, 2007
Sharon Lefkov, Portland, OR (US);
David F. Hastings, Lake Oswego, OR (US);
Christopher S. DE Voir, Tigard, OR (US);
Garth Garner, Tigard, OR (US);
Dirk Muessig, West Linn, OR (US);
Hannes Kraetschmer, West Linn, OR (US);
Sharon Lefkov, Portland, OR (US);
David F. Hastings, Lake Oswego, OR (US);
Christopher S. de Voir, Tigard, OR (US);
Garth Garner, Tigard, OR (US);
Dirk Muessig, West Linn, OR (US);
Hannes Kraetschmer, West Linn, OR (US);
Biotronik CRM Patent AG, Baar, CH;
Abstract
Implantable medical device with an impedance determination unit with constant current/voltage source having current feed terminals connected to electrodes for intracorporal placement which generates measuring current pulses having constant current/voltage, for causing a current through a body via intracorporally placed electrodes, a measuring unit for measuring voltage/current strength of voltage/current fed through body, an impedance value determination unit connected to the current/voltage source and adapted to determine an impedance value for each measuring current pulse, and an impedance measuring control and evaluation unit connected to the impedance determination unit which controls the unit and evaluates a sequence of consecutive impedance values, the impedance determination unit further adapted to determine at least intrathoracic and intracardiac impedance values for same period of time, the intrathoracic values sampled with a lower sampling rate than the intracardiac values.