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STENT, STENT DELIVERY DEVICE AND STENT DELIVERY METHOD

  • US 20090187239A1
  • Filed: 03/26/2009
  • Published: 07/23/2009
  • Est. Priority Date: 09/29/2006
  • Status: Active Grant
First Claim
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1. A stent possessing an axis and comprising:

  • a plurality of wavy annular members arranged axially adjacent one another along an axial extent of the stent to form a tubular-shaped stent;

    the stent being expandable from a first state of a first size permitting the stent to be positioned in a lumen of a living body to an expanded second state of a second size larger than the first size upon application of a radially outwardly directed expansion force from inside the stent;

    the wavy annular members comprising a first wavy annular member, a second wavy annular member axially adjacent the first wavy annular member without any other wavy annular member positioned between the first and second wavy annual members, and a third wavy annular member axially adjacent the second wavy annular member without any other wavy annular member positioned between the second and third wavy annual members;

    the first, second and third wavy annular members each comprising;

    a plurality of straight line portions positioned parallel to the axis of the stent when the stent is in both the first state and the expanded second state;

    a plurality of additional portions angled with respect to one another; and

    the plurality of straight line portions and the plurality of additional portions being interconnected so that each of the first, second and third wavy annular members is a continuous wavy annular member;

    a first connection portion connecting one of the straight line portions of the first wavy annular member to one of the straight line portions of the second wavy annular member, a second connection portion connecting another one of the straight line portions of the first wavy annular member to another one of the straight line portions of the second wavy annular member, a third connection portion connecting one of the straight line portions of the second wavy annular member to one of the straight line portions of the third wavy annular member, and a fourth connection portion connecting another one of the straight line portions of the second wavy annular member to another one of the straight line portions of the third wavy annular member;

    the first and second connection portions being circumferentially offset from one another, the third and fourth connection portions being circumferentially offset from one another; and

    the third and fourth connection portions not being aligned with the first and second connection portions in the axial direction of the stent.

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