| 摘要 |
<p>An inflow cannula (16) for intraortic blood pump (10) has a curved, spring-loaded body (34) for blind retrograde insertion through the aortic arch (20), and a soft beveled collapsible but resilient tip (38) which centers the tip with respect to the aortic valve (18) prior to retrograde insertion of the distal end of the cannula (16) through the aortic valve (18). Auxiliary intake openings (48) are provided in the side walls of the cannula (16) adjacent its distal end to prevent suction from holding the tip (38) in its collapsed state after insertion through the aortic valve (18).</p> |
