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. 20, 2015
Filed:
Oct. 31, 2008
Douglas A. Hettrick, Andover, MN (US);
Yong K. Cho, Maple Grove, MN (US);
Mattias Rouw, Arnhem, NL;
Shantanu Sarkar, Roseville, MN (US);
Todd M. Zielinski, Ham Lake, MN (US);
Douglas A. Hettrick, Andover, MN (US);
Yong K. Cho, Maple Grove, MN (US);
Mattias Rouw, Arnhem, NL;
Shantanu Sarkar, Roseville, MN (US);
Todd M. Zielinski, Ham Lake, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
Techniques for estimating a cardiac chamber or vascular pressure based upon impedance are described. A device or system may measure an impedance between at least two electrodes implanted within or proximate to a cardiovascular system. The device or system may estimate a pressure of an element of the cardiovascular system based on a relationship between impedance and volume of the element, and based on a empirical relationship between the volume and the pressure. The device or system may also estimate the dimension of the element based on the impedance-volume relationship, or other characteristics based on the impedance. Because the impedance measurements may be obtained, in some examples, by using electrodes and leads implanted within the cardiovascular system and coupled to an implantable medical device, a practical estimation of a cardiovascular pressure can be obtained on a chronic basis without requiring the use other invasive sensors, such as micronanometer transducers.