| 摘要 |
<p>A device for assisting the dilated left ventricle in a patient with severe heart failure. Extra-cardiac compression of the left ventricle is achieved by a simple, implantable device consisting of metal flanges (2) that are passively flexed at springed-hinges (5) by a vertically moving metal cup (1) . The vertical movements of the metal cup are achieved by means, such as a motor driven rack-and-pinion mechanism, or, a linear induction motor system. The motor is controlled by a micro-controller (16) that is external to the patient's body and worn, preferably on a waist belt along with the external battery system. The device can be synchronized to the patient's cardiac cycle by using commercially available standard three-lead surface electrocardiogram (11) . The flanges (2) are connected to each other by a high-tensile, elastic polymer membrane (3). The phosphorylcholine-containing polymer membrane may be used as a carrier of drugs or other agents to be delivered locally directly onto the myocardium.</p> |
