Cardiac assist device

Details Cardiac assist device Cardiac assist device

1997-07-22

1999-08-24

Getzow, Scott M.

Surgery

Cardiac augmentation

A61M 110

Patent

active

059418133

ABSTRACT:
In a cardiac assist device, a housing has an inlet and outlet connectable to a patient's cardiovascular system. A pump is located within the housing to force blood that has entered through the inlet out through the outlet. The pump is connectable between the patient's left atrium and the aorta so as to assist the function of the left ventricle. A motor unit is also disposed within the housing, hermetically sealed from the pump. The whole unit is wholly implantable in a patient's chest. Permanently sealable valves, disposed in the inlet and outlet, may be closed without any invasive procedure to isolate the device from the heart once cardiac function assist is no longer required. The device may remain implanted within the patient indefinitely after the valves have been closed, and there is no requirement for a surgical procedure to remove the device once it is de-activated.

REFERENCES:
patent: 4944748 (1990-07-01), Bramm et al.
patent: 4957504 (1990-09-01), Chardack
patent: 5578012 (1996-11-01), Kamen et al.
patent: 5613935 (1997-03-01), Jarvik
Harbott, et al., "Rotary blood pumps in circulatory assist," Perfusion, 10:153-158 (1995).
Mussivand, et al., "Totally Implantable Intrathoracic Ventricular Assist Device," Ann Thorac Surg, 61:444-447 (1996).
Guldner, et al., "First Clinical Application of the MEDOS-HIA Ventricular Support System: Monitoring of the Thrombotic Risk by means of the Biomarker Prothrombin Fragment F.sub.1+2 and Scanning Electron Microscopy Evaluation," J. Heart Lung Transplant., 15:291-296 (Mar. 1996).
Westaby, et al., "Less Invasive Coronary Surgery: Consensus From the Oxford Meeting," Ann Thorac Surg, 62:924-931 (1996).

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