×

Stent fabrication via tubular casting processes

  • US 9,908,143 B2
  • Filed: 05/21/2012
  • Issued: 03/06/2018
  • Est. Priority Date: 06/20/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method of forming a polymeric stent, comprising:

  • repeatedly immersing a mandrel in a solution comprising a bioabsorbable polymer and a solvent,wherein the bioabsorbable polymer is a polylactide having a weight average molecular weight at or greater than about 9.80×

    105 g/mol,wherein a polymeric substrate is formed on the mandrel from repeatedly immersing the mandrel in the solution,wherein the polymeric substrate is a tubular member formed as multiple dip-coated layers of the polymeric solution on the mandrel;

    drying and heating the polymeric substrate in order to remove residual amounts of the solvent from the multiple dip-coated layers of the polymeric solution; and

    forming the polymeric stent by further processing the tubular member, wherein the polymeric stent comprises at least one dip-coated layer of the polylactide having a thickness and wherein a degree of crystallinity of the at least one dip-coated layer is between about 20% and 40%.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×