×

Intravascular stent

  • US 6,152,957 A
  • Filed: 03/26/1997
  • Issued: 11/28/2000
  • Est. Priority Date: 04/26/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A stent in a non-expanded state, comprising:

  • a first expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a joining strut of the first expansion strut pair that couples the first and second expansion struts at a distal end of the first expansion strut pair, a plurality of the first expansion strut pair forming a first expansion column;

    a second expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a joining strut of the second expansion strut pair that couples the first and second expansion struts of the second expansion strut pair at a proximal end of the second expansion strut pair, a plurality of the second expansion strut pair forming a second expansion column;

    a first connecting strut including a first connecting strut proximal head section and first connecting strut distal tail section, the head section being coupled to the distal end of the first expansion strut pair in the first expansion column and the tail section being coupled to the proximal end of the second expansion strut pair of the second expansion column, a plurality of the first connecting strut forming a first connecting strut column that couples the first expansion column to the second expansion column, the tail section extending in a first lateral direction relative to a longitudinal axis of the head section to form a first slant angle;

    a third expansion strut pair including a first expansion strut positioned adjacent to a second expansion strut and a third joining strut of the third expansion strut pair that couples the first and second expansion struts at a proximal end of the third expansion strut pair, a plurality of the third expansion strut pair forming a third expansion column, the first expansion strut of the first expansion strut pair in the first expansion column having a longitudinal axis that is parallel to and offset from a longitudinal axis of the first expansion strut of the second expansion strut pair in the second expansion column, and the second expansion strut of the third expansion strut pair in the third expansion column having a longitudinal axis that is parallel to and offset from a longitudinal axis of the first expansion strut of the second expansion strut pair of the second expansion column;

    a second connecting strut including a proximal head section and a distal tail section, the head section being coupled to the distal end of the second expansion strut pair in the second expansion column and the tail section being coupled to the proximal end of the third expansion strut pair of the third expansion column, a plurality of the second connecting strut forming a second connecting strut column that couples the second expansion column to the third expansion column, wherein the tail section extends in a second lateral direction relative to a longitudinal axis of the head section to form a second slant angle that extends in an opposite direction from the first lateral direction; and

    wherein a ratio of a number of expansion struts in an expansion strut column to a number of connecting struts in a connecting strut column is 2 to 1 and the first slant angle reduces a fore shortening of the stent between the first and second expansion columns when the stent is in an expanded state.

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