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Expandable medical device with beneficial agent delivery mechanism

  • US 7,819,912 B2
  • Filed: 03/04/2003
  • Issued: 10/26/2010
  • Est. Priority Date: 03/30/1998
  • Status: Expired due to Fees
First Claim
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1. An expandable medical device comprising:

  • a plurality of elongated struts joined together to form a substantially cylindrical tube which is expandable from a cylinder having a first diameter to a cylinder having a second diameter;

    a plurality of reduced area ductile hinges interconnecting the plurality of elongated struts, wherein the ductile hinges have a cross sectional area smaller than a cross sectional area of the elongated struts, and the ductile hinges deform upon expansion or compression of the cylindrical device while the struts are substantially undeformed; and

    a plurality of holes containing a beneficial agent formed in the elongated struts;

    wherein the ductile hinges have a substantially constant width in a circumferential dimension along a portion of a hinge length which is at least ⅓

    the total length of a hinge.

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