Surgery – Cardiac augmentation
Reexamination Certificate
2011-02-15
2011-02-15
Layno, Carl H (Department: 3766)
Surgery
Cardiac augmentation
C600S017000, C623S003100, C623S003130, C623S003140, C623S003150, C623S003240, C623S003280, C073S054280
Reexamination Certificate
active
07887479
ABSTRACT:
A method of estimating the blood flow rate of a heart ventricle assist device which is positioned externally of, or implanted in, a patient. The assist device comprises a blood pump having a rapidly rotating, electrically powered impeller, and comprises briefly interrupting power to the impeller to cause its rotation to slow. From this, blood viscosity can be estimated, which viscosity is used to obtain real time, estimated blood flow rates and pressure heads. Apparatus for accomplishing this is disclosed.
REFERENCES:
patent: 4781525 (1988-11-01), Hubbard et al.
patent: 5798454 (1998-08-01), Nakazeki et al.
patent: 6066086 (2000-05-01), Antaki et al.
patent: 6540658 (2003-04-01), Fasciano et al.
patent: 6623420 (2003-09-01), Reich et al.
patent: 6949066 (2005-09-01), Bearnson et al.
Docter, A., Lösch, H., Wagner, W. A New Apparatus for Combined Measurements of the Viscosity and Density of Fluids for Temperatures from 233 to 523 K at Pressures up to 30 MPa. International Journal of Thermophysics 20(2), 1999:485-505.
Evers, C., Lösch, H.W., Wagner, W. An Absolute Viscometer-Densimeter and Measurements of the Viscosity of Nitrogen, Methane, Helium, Neon, Argon and Krypton over a Wide Range of Density and Temperature. International Journal of Thermophysics 23(6), 2002:1411-1439.
International Preliminary Report on Patentability issued by the International Bureau of WIPO on Nov. 29, 2006 in connection with PCT International Application No. PCT/US2005/018333.
LaRose Jeffrey A.
Singh Udai
Cooper & Dunham LLP
Heartware, Inc.
Layno Carl H
Malamud Deborah
White John P.
LandOfFree
Sensorless flow estimation for implanted ventricle assist... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sensorless flow estimation for implanted ventricle assist..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sensorless flow estimation for implanted ventricle assist... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2627245