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Green fluoropolymer tube and endovascular prosthesis formed using same

  • US 7,597,775 B2
  • Filed: 10/30/2001
  • Issued: 10/06/2009
  • Est. Priority Date: 10/30/2001
  • Status: Expired due to Fees
First Claim
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1. A process for forming an implantable prosthesis, comprising the steps of:

  • extruding an extrudate consisting on a lubricant and PTFE to form a tubular member having a wall with an inner surface and an outer surface, a thickness being defined between said inner and outer surfaces in the range of about 250 μ

    m or less at the exit of an extruder die used in the extruding, wherein said inner surface has a smooth inner surface having a single constant diameter;

    wherein a pressurized stable medium is injected into a lumen of said tubular member during extrusion to provide support thereof; and

    disposing a distensible member concentrically relative to said tubular member.

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