Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2011-04-12
2011-04-12
Layno, Carl H (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
Reexamination Certificate
active
07925335
ABSTRACT:
An apparatus for determining cardiac performance in the patient involving a conductance catheter (12) for measuring conductance and blood volume in a heart chamber of the patient. The apparatus includes a processor (14) for determining instantaneous volume of the ventricle by applying a non-linear relationship between the measured conductance and the volume of blood in the heart chamber to identify mechanical strength of the chamber. The processor (14) is in communication with the conductance catheter (12).
REFERENCES:
patent: 4854327 (1989-08-01), Kunig
patent: 5370122 (1994-12-01), Kunig et al.
patent: 5450850 (1995-09-01), Iinuma
patent: 5842998 (1998-12-01), Gopakumaran et al.
patent: 5882312 (1999-03-01), Gopakumaran et al.
patent: 6112115 (2000-08-01), Feldman et al.
patent: 6494832 (2002-12-01), Feldman et al.
patent: 6545678 (2003-04-01), Ohazama
Marc D. Feldman, Yi Mao, Jonathan W. Valvano, John A. Pearce, Gregory L. Freeman “Development of a Multifrequency Conductance Catheter-Based System to Determine LV Function in Mice,” Am J Physiol Heart Circ Physiol, The American Physiological Society, p. H1411-H1420, (Feb. 11, 2000).
Timothy J. Gawne, Kristen S. Gray, Robert E. Goldstein, “Estimating Left Ventricular Offset Volume Using Dual-Frequency Conductance Catheters,” J. Appl. Physiology, p. 872-876, (1987).
Salo RW, “Intraventricular Admittance as a Tool in Cardiovascular Physiology,” Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 13 (No. 2), p. 0728-0729, (1991).
Baan J., Van Der Velde ET, De Bruin HG, Smeenk GJ, Koops J, Van Dijk AD, Temmerman D, Senden J., Buis B., “Continuous Measurement of Left Ventricular Volume in Animals and Humans by Conductance Catheter,” Circulation, p. 812-823, (1984).
Feldman Marc D.
Pearce John A.
Valvano Jonathan W.
Wei Chia-Ling
Board of Regents , The University of Texas System
Gedeon Brian T
Layno Carl H
Schwartz Ansel M.
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