DEVICE VIEWABLE UNDER AN IMAGING BEAM
First Claim
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1. A stent, comprising:
- a material having structure to provide three-dimensional visualization of a surrounding tissue when said stent is inserted into said tissue and viewed under an imaging beam,said stent having;
a single coating layer selected from a group consisting of;
a hydrophilic polymer, a hydrophobic polymer, and a fatty acid polymer, anda density enhancing radiologic opacifier embedded into said single coating layer, said single coating layer and said embedded opacifier material together providing a first Hounsfield image density suitable for viewing under a first image modality used during device insertion into a patient, and wherein said density enhancing radiologic opacifier material is configured to elute from said single coating layer so as to provide a second Hounsfield image density suitable for viewing under a second image modality used for subsequent visualization of surrounding tissue,wherein said single coating layer includes a restenosis inhibiting drug.
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Abstract
The invention provides a stent made from a material operable to perform a stent'"'"'s desired therapeutic functions, and also made from a material that has a radiopacity that substantially preserves the appearance of the stent when the stent is viewed under a CT imaging beam. Such a stent can allow for follow-up of the stent and the surrounding blood-vessel on CT.
99 Citations
8 Claims
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1. A stent, comprising:
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a material having structure to provide three-dimensional visualization of a surrounding tissue when said stent is inserted into said tissue and viewed under an imaging beam, said stent having; a single coating layer selected from a group consisting of;
a hydrophilic polymer, a hydrophobic polymer, and a fatty acid polymer, anda density enhancing radiologic opacifier embedded into said single coating layer, said single coating layer and said embedded opacifier material together providing a first Hounsfield image density suitable for viewing under a first image modality used during device insertion into a patient, and wherein said density enhancing radiologic opacifier material is configured to elute from said single coating layer so as to provide a second Hounsfield image density suitable for viewing under a second image modality used for subsequent visualization of surrounding tissue, wherein said single coating layer includes a restenosis inhibiting drug. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification