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:
Jan. 16, 2007
Filed:
Jul. 14, 2003
Nils Holmström, Järfälla, SE;
Anders Björling, Järfälla, SE;
Kjell Norén, Solna, SE;
Karin Ljungström, Hässelby, SE;
Sven Kalling, Täby, SE;
Nils Holmström, Järfälla, SE;
Anders Björling, Järfälla, SE;
Kjell Norén, Solna, SE;
Karin Ljungström, Hässelby, SE;
Sven Kalling, Täby, SE;
St. Jude Medical AB, Jarfalla, SE;
Abstract
A heart stimulator for electric stimulation of a patient's heart has an impedance measuring unit that measures the impedance between at least two measurement electrodes implanted in a patient such that volume changes of at least one of the chambers of the left heart result in changes in the measured impedance. An analyzer analyzes the measured impedance for the control of the stimulation of the heart. A calculation unit calculates an average impedance morphology curve during a time interval of several cardiac cycles. The analyzer analyzes the average impedance morphology curve for use for the control of the stimulation to optimize the patient hemodynamics.