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Medical device including cylindrical micelles

  • US 7,758,635 B2
  • Filed: 02/13/2007
  • Issued: 07/20/2010
  • Est. Priority Date: 02/13/2007
  • Status: Expired due to Fees
First Claim
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1. A stent comprising:

  • an expandable framework having a first end, a second end, an outer diameter defining an outer surface, and an inner diameter defining an inner surface forming a lumen, the expandable framework including a plurality of interconnected segments; and

    a plurality of cylindrical micelles incorporated with the expandable framework, the cylindrical micelles formed of multi-block amphiphilic copolymers self-assembling in a solution such that the cylindrical micelles have an outer shell region including a first polymer block of the multi-block amphiphilic copolymer surrounding a core region including a second polymer block of the multi-block amphiphilic copolymer, wherein the first polymer block is more soluble in the solution than the second polymer block.

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