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;
annealing the thin film of material; and
forming the thin film of material into a medical device.
2. The method of claim 1 wherein:
the silicon is provided with a layer of silicon oxide, and the nitinol is deposited over the layer of silicon oxide; and
the releasing step comprises providing a substrate etchant to dissolve the layer of silicon oxide.
3. 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;
wherein the substrate is silicon; and
the thin film of material is nitinol.
4. A method for manufacturing a body implantable thin film medical device, said method comprising:
providing a substrate;
sputter depositing a thin film of material onto the substrate;
releasing the thin film of material from the substrate;
forming the thin film of material into a medical device
hipping the thin film of material; and
thereafter cold working the thin film of material.
5. The method of claim 4 wherein the step of cold working the thin film of material comprises pack rolling the thin film of material in at least one pass through a thin film roller.