Surgery – Cardiac augmentation
Patent
1997-07-11
1998-10-13
Jastrzab, Jeffrey R.
Surgery
Cardiac augmentation
A61B 1900
Patent
active
058205420
ABSTRACT:
A circulatory assist device, having a housing and a pumping membrane, with a control chamber and a pumping chamber. The device is mounted on a catheter, collapsed to a sufficiently small diameter to allow insertion into the vascular system of a patient. An expansion mechanism in the device, such as a stent, can be expanded to hold the housing in an expanded substantially rigid state, while control fluid is pumped into and evacuated from the control chamber to repeatedly deflect the pumping membrane. At least one opening is formed in the device, to allow vascular fluid to enter and exit the pumping chamber as the pumping membrane deflects. Introduction and evacuation of control fluid can be synchronized with the heart cycle of the patient. After use, the housing is contracted to a smaller diameter to allow withdrawal from the vascular system.
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Dobak III John D.
Ghaerzadeh Kambiz
Jastrzab Jeffrey R.
Momentum Medical, Inc.
Spinks Gerald W.
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