Muscle and air powered LVAD

Details Muscle and air powered LVAD Muscle and air powered LVAD

1992-07-30

1995-03-14

Willse, David H.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Corporeal artificial heart, heart assist , control...

600 18, 600 16, 623 26, A61M 112

Patent

active

053973496

ABSTRACT:
A method for providing ventricular assist to a patient with a weak or nonfunctional heart includes attaching an artificial ventricle to a patient and pumping said artificial ventricle with a muscle powered hydraulic pump. This method is enhanced by supplementing said artificial ventricle as needed with a pneumatic pumping system which is hermetically sealed from the hydraulic fluid. The hydraulic pumping power is amplified by driving a first pumping member of larger dimension against a second pumping member of smaller dimension to thereby supply increased force to overcome existing blood pressure.

REFERENCES:
patent: 4453537 (1984-06-01), Spitzer
patent: 4652265 (1987-03-01), McDougall
patent: 4693714 (1987-09-01), Lundback
patent: 4968293 (1990-11-01), Nelson
patent: 4979936 (1990-12-01), Stephenson et al.
patent: 5273518 (1993-12-01), Lee et al.
Kusserow et al., "A Small Ventricle-Type Pump for Prolonged Perfusions", vol. X Trans. Amer. Soc. Artif. Int. Organs, 1964, pp. 74-78.
Ugolini, in Chiu, Biomedical Cardiac Assist, 1986, Ch. 14, pp. 193-210.
Muscle Powered Circulatory Assist Device for Diastolic Counterpulsator, Novoa, et al.

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