Variable permeability layered structure and method
AssigneeMedtronic Vascular, Inc.
InventorsZachary Borglin, Keith Perkins, Julie Benton
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Abstract
The techniques of this disclosure generally relate to a variable permeability layered prosthesis including an impermeable outer layer and a permeable inner layer. The impermeable outer layer is well suited to seal a dissection opening of a dissection. The permeable inner layer allows fluid to enter into a dead space between the impermeable outer layer and the permeable inner layer. The fluid in the dead space coagulates in the dead space providing a media for tissue growth into the prosthesis. The ability of tissue to integrate into the prosthesis provides biological fixation of the prosthesis in vessels and prevents endoleaks and migration of the prosthesis.
Claims25
A prosthesis comprising:
- a variable permeability layered graft material comprising:
- a permeable inner layer;
- an impermeable outer layer;
- and
- crosslink yarns attaching the permeable inner layer to the impermeable outer layer.
A prosthesis comprising:
- a variable permeability layered graft material comprising:
- a permeable inner layer comprising an inner surface and an outer surface;
- and
- an impermeable outer layer comprising an inner surface and an outer surface,
- wherein a dead space exists between the outer surface of the permeable inner layer and the inner surface of the impermeable outer layer when the prosthesis is in a deployed configuration.
A method comprising:
- deploying a prosthesis within a vessel, the prosthesis comprising a permeable inner layer and an impermeable outer layer;
- wherein fluid passes through the permeable inner layer and into a dead space between the permeable inner layer and an impermeable outer layer, the fluid coagulating in the dead space.
A prosthesis comprising:
- a proximal seal zone;
- an exclusion zone;
- a variable permeability layered graft material comprising:
- a permeable inner layer;
- an outer layer;
- and
- crosslink yarns attaching the permeable inner layer to the outer layer,
- wherein the outer layer comprises a permeable outer layer in the proximal seal zone and an impermeable outer layer in the exclusion zone.
Dependencies are inferred from the claim text.