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MULTISTATE-CURVATURE DEVICE AND METHOD FOR DELIVERING A CURABLE MATERIAL INTO BONE

  • US 20120239050A1
  • Filed: 05/30/2012
  • Published: 09/20/2012
  • Est. Priority Date: 11/18/2005
  • Status: Active Grant
First Claim
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1. A system for injecting curable material to a delivery site within a bone structure, the system comprising:

  • a guide cannula including a generally straight body longitudinally encompassing and defining a guide cannula lumen; and

    a delivery cannula with a longitudinal tubular body dimensioned to be disposed through, and to extend beyond a distal end of the guide cannula lumen, the delivery cannula including;

    an open, proximal end,a deflectable distal segment, opposite the proximal end, including a distal tip,a delivery cannula lumen extending from the proximal end;

    where the delivery cannula body comprises a memory metal material such that the delivery cannula body includesa first state at a first temperature where the delivery cannula body is generally longitudinally straight, substantially defining a longitudinal axis;

    a second state at a second temperature, greater than the first temperature, where the memory metal is configured such that the distal segment forms a first curved shape having a first degree of curvature away from the longitudinal axis; and

    a third state at a third temperature, greater than the second temperature, where the memory metal is configured such that the distal segment forms a second curved shape having a second degree of curvature away from the longitudinal axis.

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