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US 9,433,715 B2Granted
Stable aortic blood pump implant
AssigneeL. Vad Technology, Inc.
InventorsAdrian Kantrowitz, Robert Merrill Smith
Life of this patent
Estimating the term…
Abstract
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.
Claims13
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.
4 more elements
A cardiac assist system comprising an aortic blood pump implantable in a patient aorta internal to a patient body, the 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 and where the elongate shell is adapted to be joined to an interior incised wall of the patient aorta;
- 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 passage and adapted to deflect outward. from said elongate shell;
- a suture flange;
- a stent composed of a wire-mesh material disposed between the suture flange and the shell and having an expanded state defining a substantially open cylindrical area for expansion of said flexible membrane;
- the suture flange including a piece of sheet material attached to the shell and shaped to seal said shell to the incised wall of the native human aorta;
- and
- a gas tube adapted to afford fluid communication between the aortic blood pump and a region external to the patient body.
5 more elements
Dependencies are inferred from the claim text.