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:
Nov. 25, 2014
Filed:
Jun. 26, 2012
Applicants:
Heinrich Schima, Vienna, AT;
Ing Francesco Moscato, Vienna, AT;
Marcus Granegger, Vienna, AT;
Inventors:
Assignee:
HeartWare, Inc., Miami Lakes, FL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61N 1/365 (2006.01); A61M 1/10 (2006.01); A61M 1/12 (2006.01);
U.S. Cl.
CPC ...
A61M 1/1086 (2013.01); A61M 1/1031 (2014.02); A61M 1/122 (2014.02); A61M 1/101 (2013.01); A61M 2205/3334 (2013.01);
Abstract
The flow rate of blood out of a blood pump is determined at least in part based on an acceleration of the pump's rotor and on the blood's viscosity. Considering the rotor acceleration when determining blood flow rate, increases the accuracy of the blood flow measurement thereby permitting the determination of a parameter related to the contractility of a patient's heart. The parameter may include a rate of pressure change of blood across the pump, a ratio of the rate of pressure change and a peak-to-peak value of the blood flow rate, or any other contractility index.