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Medical devices having multiple layers

  • US 8,293,262 B2
  • Filed: 07/13/2010
  • Issued: 10/23/2012
  • Est. Priority Date: 05/20/2004
  • Status: Expired due to Fees
First Claim
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1. An expandable medical balloon, the expandable medical balloon comprising:

  • (a) a polymer layer, the polymer layer defines a balloon wall comprising an inner surface and an outer surface, the inner surface defining a lumen;

    (b) a multilayer region comprising;

    (i) a charged nanoparticle layer; and

    (ii) a plurality of charged polyelectroyte layers comprising charged polyelectrolyte species; and

    (c) a therapeutic agent disposed on or within the multilayer region.

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