Stable aortic blood pump implant

摘要

An aortic blood pump is described that is secured to a patient aorta that can be inflated and deflated in response to selective communication with a source of pressurized fluid or air. An expanded stent creates an area in with the pump and inflate and deflate. A system is also detailed including the pump and an external air line external to a patient body.

主权项

1. An implantable aortic blood pump, comprising:
an elongate shell having a contoured concave inner surface terminating at a peripheral side edge tapering at both ends to approximate the geometrical intersection of the elongate shell with a substantially cylindrical native human aorta; a suture flange coupled to the elongate shell; at least one passage integral with and through the shell to define an opening in the inner surface, the at least one passage integral with the shell and having an angle relative to the inner surface of between 5 and 30 degrees; an elongate flexible membrane continuously bonded to said shell adjacent to the peripheral side edge, said flexible membrane in cooperation with said shell defining an enclosed inflatable chamber in fluid communication with the at least one passage and adapted to deflect outward from said elongate shell, the shell being more rigid than the membrane; a stent composed of a wire-mesh material disposed between the suture flange and the shell, the stent being attached at said shell and positioned to increase shell rigidity, the stent having an expanded state that defines a substantially open cylindrical area for expansion of said flexible membrane; and wherein the suture flange includes a piece of sheet material shaped to seal said shell to an incised wall of a native human aorta.