Biodegradable supporting device
AssigneeQ3 Medical Devices Limited
InventorEric K. Mangiardi
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Abstract
A biodegradable in vivo supporting device is disclosed. In one embodiment, a coated stent device includes a biodegradable metal alloy scaffold made from a magnesium alloy, iron alloy, zinc alloy, or combination thereof, and the metal scaffold comprises a plurality of metal struts. The metal struts are at least partially covered with a biodegradable polymer coating. A method for making and a method for using a biodegradable in vivo supporting device are also disclosed.
Claims19
A biodegradable balloon-expandable in vivo supporting device, comprising:
- a biodegradable metal alloy scaffold made from an alloy comprising magnesium, manganese and at least one rare earth metal, the scaffold comprising a plurality of metal struts;
- and
- a biodegradable polymer coating at least partially covering the metal struts,
- wherein coated struts have a cross-sectional width between 100-600 μm, the polymer coating has a thickness between 10-100 μm,
- wherein the metal alloy scaffold includes at least one rare earth metal, and
- wherein the metal scaffold comprises a cylinder-shaped stent body consisting of a plurality of axially arranged rows of struts encircling a central lumen in a wave pattern, wherein each row is configured in a substantially antiparallel arrangement relative to its adjacent row(s), and wherein each row is solely connected to an adjacent row by a plurality of curved connectors.
A biodegradable balloon-expandable in vivo supporting device, comprising:
- a biodegradable metal alloy scaffold made from a magnesium alloy, an iron alloy, a zinc alloy, or combination thereof, the metal scaffold comprising a plurality of metal struts;
- a biodegradable polymer coating at least partially covering the metal struts,
- wherein the magnesium alloy, iron alloy, and/or zinc alloy has a manganese content of at least 1 wt. %, and
- wherein coated struts have a cross-sectional width between 100-600 μm, the polymer coating has a thickness between 10-100 μm, and
- wherein the metal scaffold comprises a cylinder-shaped stent body consisting of a plurality of axially arranged rows of struts encircling a central lumen in a wave pattern, wherein each row is configured in a substantially antiparallel arrangement relative to its adjacent row(s), and wherein each row is solely connected to an adjacent row by a plurality of curved connectors.
A biodegradable balloon-expandable in vivo supporting device, comprising:
- a biodegradable metal alloy scaffold made from a magnesium alloy including magnesium, manganese, and neodymium or cerium, the metal scaffold comprising a plurality of metal struts;
- and
- a biodegradable polymer coating at least partially covering the metal struts, coated struts have a cross-sectional width between 100-600 μm, the polymer coating has a thickness between 10-100 μm, and
- wherein the metal scaffold comprises a cylinder-shaped stent body consisting of a plurality of axially arranged rows of struts encircling a central lumen in a wave pattern, wherein each row is configured in a substantially antiparallel arrangement relative to its adjacent row(s), and wherein each row is solely connected to an adjacent row by a plurality of curved connectors.
Dependencies are inferred from the claim text.