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Partial encapsulation of stents

  • US 8,617,337 B2
  • Filed: 02/08/2011
  • Issued: 12/31/2013
  • Est. Priority Date: 02/02/1999
  • Status: Expired due to Fees
First Claim
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1. A method of making an implantable medical device, comprising:

  • extruding a first expanded polytetrafluoroethylene tube at a first extruded diameter;

    extruding a second expanded polytetrafluoroethylene tube at a second extruded diameter;

    cutting a plurality of slits in the first expanded polytetrafluoroethylene tube at the first extruded diameter;

    subsequent to the cutting, positioning a radially expandable support layer between the first and second expanded polytetrafluoroethylene tubes so that the slits span portions of the support layer; and

    laminating the first expanded polytetrafluoroethylene tube to the second expanded polytetrafluoroethylene tube through openings in the support layer.

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