CRUSH RECOVERABLE POLYMER SCAFFOLDS
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Accused Products
Abstract
A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold, after being deployed by the balloon, provides a crush recovery of about 90% after the diameter of the scaffold has been pinched or crushed by 50%. The scaffold has a pattern including an asymmetric closed cell connecting links connecting the closed cells.
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Citations
56 Claims
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1-22. -22. (canceled)
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23. An implantable medical device, comprising:
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a scaffold formed from a polymer tube configured for being crimped to a balloon catheter, the scaffold having a pattern of interconnected elements, and the scaffold having an expanded diameter when plastically deformed from a crimped state by the balloon of the catheter, wherein the scaffold attains greater than 90% of the expanded diameter after being crushed by an amount equal to at least 33% of the expanded diameter. - View Dependent Claims (24, 26, 27, 28, 34, 35, 37)
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25. (canceled)
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29-33. -33. (canceled)
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36. (canceled)
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38. A medical device, comprising:
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a scaffold crimped to a balloon catheter, the scaffold having a pre-crimp diameter 300-400% greater than a crimped diameter, having an expanded diameter between 6 mm and 12 mm, and adapted for being plastically deformed by a balloon of the catheter, whereby the scaffold attains the expanded diameter, and wherein the plastically deformed scaffold is capable of regaining more than 90% of a plastically deformed scaffold diameter after being crushed to at least 75% of the plastically deformed scaffold diameter. - View Dependent Claims (39, 40, 45, 46, 47, 51, 52)
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41-44. -44. (canceled)
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48-50. -50. (canceled)
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53. An implantable medical device, comprising:
a crimped scaffold that when plastically deformed by a balloon forms a scaffold having an expanded diameter, wherein the scaffold regains more than 80% of the expanded diameter after being crushed by an amount equal to 30% of the expanded diameter, the scaffold has a pre-crimp diameter of between 6 and 12 mm, the scaffold has struts and links, wherein a strut and/or link has a width to thickness ratio of between 0.8 and 1.4 or 0.4 to 0.9, and wherein a ratio of a pre-crimp diameter of the scaffold to a scaffold wall thickness is between 30 and 60 or between 20 and 45. - View Dependent Claims (54, 55, 56)
Specification