Pumping system and method for assisting a patient's heart

摘要

A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.

主权项

1. A pumping system for assisting a human patient's heart, comprising:
a blood pump; a drainage cannula adapted for fluid communication with an inlet to the blood pump to provide blood to the blood pump; and a blood supply cannula adapted for fluid communication with an outlet of the blood pump to provide blood to the patient's heart arterial system, at least one of the drainage cannula and the blood supply cannula further comprising:
an elongated body defining a channel extending through the elongated body, the elongated body having a proximal end and a distal end having a distal tip, the distal end defusing at least one of a tip opening communicating with the channel and at least one side hole in proximity to the distal tip and communicating with the channel for outflow of blood at the distal end, wherein the drainage cannula has a length to extend from the patient's groin to the patient's right atrium and the blood supply cannula has a length to extend from the patient's groin to the patient's heart arterial system, whereby, when the blood pump operates, the patient's heart and lungs are essentially bypassed by draining the right atrium of blood and pumping blood into the patient's heart arterial system thereby allowing the patient's ventricles to rest and establishing ventricular support.