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Flexible expandable sheet stent and technology of its manufacturing

  • US 6,629,993 B2
  • Filed: 04/04/2001
  • Issued: 10/07/2003
  • Est. Priority Date: 10/04/1998
  • Status: Expired due to Fees
First Claim
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1. A flexible expandable sheet stent for insertion into the lumen of a vessel of a patient, comprising:

  • constructive elements forming branches, preliminarily formed in a shape of a stencil on a thin sheet metallic blank surface, which shape comprises one relatively rigid band, consisting of consecutively united pockets, the branches of which form periodically repeating twisting closed outlines having longer and shorter sides, whereas the longer side components of each outline are oppositively located in a shape of a relatively free loop, the shape of which is approaching to a circular shape, forming an independent ring with a fastening point on said relatively rigid band, wherein in said preliminarily formed stencil the constructive elements occupy a primary part of the surface area, excluding that which falls at the stencil openings, radii of formed pockets round-offs and radii of closed free loops short sides round-offs, whereas the width of the openings is executed minimally possible technologically.

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