Methods and apparatus for controlling heart assist devices

Details Methods and apparatus for controlling heart assist devices Methods and apparatus for controlling heart assist devices

2007-01-30

2007-01-30

Pezzuto, Robert E. (Department: 3766)

Surgery

Diagnostic testing

Cardiovascular

C600S016000, C600S017000, C600S018000, C623S003280, C623S003100

Reexamination Certificate

active

10297118

ABSTRACT:
An apparatus for a heart assist device, comprising a processing unit for computing the blood flow rate from the arterial pressure curve and for predicting at every heartbeat the closing time of the heart valve from the curve of the blood flow rate. The processing unit is adapted to deliver a signal for controlling a heart assist device at a point in time, a period ahead in time of the closing time of the heart valve, wherein the mechanical properties of the said heart assist device are taken into account in determining the period. The apparatus adapts itself to changes in a patient's heart frequency and aortic pressure.

REFERENCES:
patent: 3965339 (1976-06-01), Mount et al.
patent: 4692148 (1987-09-01), Kantrowitz et al.
patent: 4697574 (1987-10-01), Karcher et al.
patent: 4794910 (1989-01-01), Mushika
patent: 4809681 (1989-03-01), Kantrowitz et al.
patent: 5169379 (1992-12-01), Freed et al.
patent: 5178151 (1993-01-01), Sackner
patent: 5265011 (1993-11-01), O'Rouke
patent: 5365933 (1994-11-01), Elghazzawi
patent: 5390679 (1995-02-01), Martin
patent: 5713954 (1998-02-01), Rosenberg
patent: 5882311 (1999-03-01), Orouke
patent: 6010457 (2000-01-01), O'Rouke
patent: 6258035 (2001-07-01), Hoeksel et al.
patent: 6569103 (2003-05-01), Hoeksel et al.
patent: 6679829 (2004-01-01), Nigroni et al.
patent: 0 402 872 (1990-12-01), None
patent: 63-242267 (1988-10-01), None
patent: 01-297073 (1989-11-01), None
patent: WO 92/12669 (1992-08-01), None
patent: WO 97/24690 (1997-07-01), None
Eidenvall, Lars, et al., entitled “Information in the Aortic Blood Velocity Signal—A Simulation Study,” Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 13, No. 5, 1991, pp. 2248-2249.
Luisada, A.A. et al. On the function of the aortic valve and the mechanism of the first and second sounds. Japanese Heart Journal, vol. 18(1), Jan. 1977, pp. 81-91.
Portaluppi, F., et al., entitiled “Transmission Delays of Different Portions of the Aterial Pulse—A Comparison Between the Indirect Aortic and Carotid Pulse Tracings,” Acta Cardiologica, vol. 38, No. 1, 1983, pp. 49-59.

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