Surgery – Cardiac augmentation – With condition responsive means
Reexamination Certificate
2006-07-11
2006-07-11
Pezzuto, Robert E. (Department: 3766)
Surgery
Cardiac augmentation
With condition responsive means
C623S003110
Reexamination Certificate
active
07074176
ABSTRACT:
A driver for a pneumatic ventricular assist device (VAD) is powered by pressurized air, oxygen or any other gas commonly available in hospital rooms, intensive care units and operating rooms. The driver can provide both blood-ejecting pressure (systole) and blood-filling vacuum (diastole) to the VAD. The driver is controlled by a computer/digital controller by means of pressure and volume sensors, and electromechanical valves. Ventricular pumping is performed by a single spring-loaded piston or bellows. The computer can actively regulate maximum systolic ventricular pressure, maximum diastolic vacuum, cycling rate and/or ejection volume (depending on the operating mode). The driver is also capable of automatically and periodically venting the drive line to eliminate condensation and foul air. The absence of a motor or electrical pump make the device small, reliable, easy to handle, and less expensive.
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Holland & Bonzagni, P.C.
Holland, Esq. Donald S.
Innovamedica S.A. de C.V.
Pezzuto Robert E.
Reidel Jessica L.
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