| 摘要 |
A heart assistance pump system comprising a cannula having a distal end, an intake valve associated with the cannula, an outlet valve associated with the cannula, and an extensible protrusion, such as an inflatable balloon, adjacent the distal end of the cannula. Alternatively, a heart assist pump system comprising a cannula having a distal end and including an intake valve and an outlet valve and a guide, having a distal end, for guiding the cannula, the guide comprising an extensible protrusion, such as an inflatable balloon, adjacent the distal end of the guide. Alternatively or additionally, the pump is suitable for pumping blood directly from an atrium such as the right atrium or a vein associated with the atrium, such as the vena cava, to an artery associated with the same side of the heart as the atrium, such as the pulmonary artery. |
