EXPANDABLE MEDICAL DEVICE FOR DELIVERY OF BENEFICIAL AGENT
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Abstract
An expandable medical device having a plurality of elongated struts, the plurality of elongated struts being joined together to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter, and the plurality of struts each having a strut width in a circumferential direction. At least one of the plurality of struts includes at least one opening extending at least partially through a thickness of said strut. A beneficial agent may be loaded into the opening within the strut. The expandable medical device may further include a plurality of ductile hinges formed between the elongated struts, the ductile hinges allowing the cylindrical device to be expanded or compressed from the first diameter to the second diameter by deformation of the ductile hinges.
2 Citations
30 Claims
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1-20. -20. (canceled)
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21. An expandable medical device comprising:
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a network of elongated struts, each elongated strut having a neutral axis, inner and outer surfaces defining a thickness, and at least one substantially constant-cross-section through-opening in the thickness at intervals along the neutral axis; a hinge having a reduced section formed at either end of the elongated strut permitting the expandable medical device to expand from a first diameter to a second diameter by first elastically and then plastically deforming; and a beneficial agent contained primarily within the through-openings, wherein the inner and outer surfaces of the struts are substantially without beneficial agent thereon and the struts are configured to substantially not deform during the expansion from the first diameter to the second diameter. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification