Implantable medical devices incorporating x-ray mirrors
AssigneeBoston Scientific Scimed, Inc.
InventorsJan Weber, Aiden Flanagan
Life of this patent
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Abstract
An implantable medical device includes a radiolucent member provided with an x-ray mirror that reflects incident x-ray radiation to enable visualization of the device. The x-ray mirror includes a multilayer nanolaminate having alternating layers of a first metal or ceramic layer deposited by atomic layer deposition having a first refractive index, and a second metal or ceramic layer deposited by atomic layer deposition having a second refractive index that is different from the first refractive index. The nanolaminate includes a total of at least four layers.
Claims32
An implantable medical device comprising a radiolucent member provided with an x-ray mirror that reflects incident x-ray radiation,
- wherein the x-ray mirror comprises a multilayer nanolaminate that includes alternating layers of a first metal or ceramic layer deposited by atomic layer deposition having a first refractive index and a second metal or ceramic layer deposited by atomic layer deposition having a second refractive index that is different from the first refractive index, and
- wherein the nanolaminate includes a total of at least four layers.
A stent comprising a radiolucent member selected from the group consisting of bands, connectors, and combinations that comprises a bioerodible metal or metal alloy selected from the group consisting of Mg, Mg alloys, Fe, Fe alloys, and combinations thereof, and is provided with an x-ray mirror that reflects incident x-ray radiation, wherein the x-ray mirror comprises a multilayer nanolaminate that includes alternating layers of a first layer comprising Al2O3 deposited by atomic layer deposition having a first refractive index, and a second metal or ceramic layer selected from the group consisting essentially of W, Ta2O5, TiO2, and combinations thereof deposited by atomic layer deposition having a second refractive index that is different from the first refractive index, and
- wherein the nanolaminate includes a total of at least 10 layers.
Dependencies are inferred from the claim text.