Thin film stent
View Patent ↗A method for fabricating a stent or other medical device by creating a free standing thin film of metal.
1. A method for manufacturing a body implantable thin film medical device, said method comprising:
providing a substrate;
depositing a thin film of material onto the substrate;
releasing the thin film of material from the substrate; and
forming the thin film of material into a medical device.
2. The method of claim 1 wherein:
the substrate comprises a material selected from the group consisting of highly polished metal, fluorite, silicon, glass, kapton film, a plastic, or a salt; and
the thin film of material comprises a material selected from the group consisting of a cobalt-chromium-nickel alloy, tantalum, stainless steel, a metal or a polymer.
3. The method of claim 1 wherein the step of forming the thin film of material into a medical device comprises forming the thin film of material into a stent.
4. The method of claim 3 comprising the further step of providing the stent with a plurality of perforations.
5. The method of claim 4 wherein the step of providing the stent with a plurality of perforations comprises providing a plurality of partially sinusoidally curved perforations.
6. The method of claim 4 wherein the step of providing the stent with a plurality of perforations comprises providing a plurality of crescent-shaped perforations.
7. The method of claim 4 wherein the step of providing the stent with a plurality of perforations comprises providing the stent with a plurality of arcuate-shaped perforations.
8. The method of claim 4 wherein the step of providing the stent with a plurality of perforations comprises providing the stent with a plurality of slots.
9. The method of claim 4 wherein the step of providing the stent with a plurality of perforations comprises providing the stent with a plurality of perforations that are about 0.03 inches to about 0.07 inches apart radially and about 0.02634 inches apart longitudinally, and each perforation is about 0.00625 inches wide and about 0.06102 inches long.
10. The method of claim 1 wherein the step of forming the thin film of material into a medical device comprises the step of forming the thin film of material into a stent having a wrap length of about 6 millimeters to about 75 millimeters and a bridge length of about 2 millimeters to about 20 millimeters.
11. The method of claim 1 wherein the step of forming the thin film of material into a medical device comprises the step of forming the thin film of material into a rolled stent that, when unrolled, has a diameter of about 1 millimeter to about 6 millimeters.