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Expandable medical device with beneficial agent delivery mechanism

  • US 20030167085A1
  • Filed: 03/04/2003
  • Published: 09/04/2003
  • Est. Priority Date: 03/30/1998
  • Status: Active Grant
First Claim
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1. An expandable medical device comprising:

  • a plurality of elongated beams, the plurality of elongated beams joined together to form a substantially cylindrical device which is expandable from a cylinder having a first diameter to a cylinder having a second diameter, the plurality of elongated beams each having a beam width in a circumferential direction; and

    a plurality of ductile hinges connecting the plurality of beams together in the substantially cylindrical device, the ductile hinges having a substantially constant width in a circumferential dimension along a portion of a hinge length which is at least ⅓

    a total hinge length, wherein the hinge width is smaller than the beam width such that as the device is expanded from the first diameter to the second diameter the ductile hinges experience plastic deformation while the beams are not plastically deformed.

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