Right ventricular assist device

Details Right ventricular assist device Right ventricular assist device

1984-03-19

1986-03-04

Apley, Richard J.

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

Corporeal artificial heart, heart assist , control...

A61F 222

Patent

active

045739978

ABSTRACT:
A right ventricular assist device for assisting the circulation of the blood includes a smooth segmented polyurethane sac having a single valveless passageway to provide a single inlet and outlet. A rigid ellipsoidal shell surrounds the sac and has a first opening for the single valveless passageway and a second opening for pressurizing an interior portion of the shell. A flexible diaphragm extends across the interior of the shell and divides the interior into two unequal volumes; the sac and first opening in a first and larger volume, and a second opening and a pressurizing chamber in a second and smaller volume. The diaphragm is angled and dimensioned to expel up to 90% of the blood present in the sac by pressure supplied through the second opening. A vascular graft is attached between the valveless passageway and a pulmonary artery. Alternately, the sac may be formed with an elongate neck which is reinforced with a dacron graft anastomosed to the pulmonary artery.

REFERENCES:
patent: 4034742 (1977-07-01), Thoma
patent: 4222127 (1980-09-01), Donachy et al.
patent: 4240409 (1980-12-01), Robinson et al.

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