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:
Mar. 22, 2005
Filed:
Feb. 26, 2003
Randal C. Schulhauser, Phoenix, AZ (US);
Gary Stefanov, Mississauga, CA;
Jon S. Tracy, Orangeville, CA;
Eric M. Rieder, Georgetown, CA;
Mark Son, Etobicoke, CA;
Brian B. Lee, Golden Valley, MN (US);
Nicole M. Haupt, Etobicoke, CA;
Randal C. Schulhauser, Phoenix, AZ (US);
Gary Stefanov, Mississauga, CA;
Jon S. Tracy, Orangeville, CA;
Eric M. Rieder, Georgetown, CA;
Mark Son, Etobicoke, CA;
Brian B. Lee, Golden Valley, MN (US);
Nicole M. Haupt, Etobicoke, CA;
Medtronic, Inc., Minneapolis, MN (US);
Abstract
A minimally invasive, implantable heart sound and ECG monitor and associated method for deriving blood pressure from heart sound data. The device is equipped with an acoustical sensor for detecting first and second heart sounds which are sampled and stored during sensing windows following R-wave and T-wave detections, respectively. ECG and heart sound data are stored in a continuous, looping memory, and segments of data are stored in long-term memory upon an automatic or manual data storage triggering event. Estimated blood pressure is calculated based on custom spectral analysis and processing of the first and second heart sounds. A calibration method includes measuring a patient's blood pressure using a standard clinical method and performing regression analysis on multiple spectral variables to identify a set of best fit weighted equations for predicting blood pressure. Concurrent ECG and estimated blood pressure may be displayed for review by a physician.