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Devices and methods for fracture reduction

  • US 9,192,397 B2
  • Filed: 06/17/2009
  • Issued: 11/24/2015
  • Est. Priority Date: 12/15/2006
  • Status: Active Grant
First Claim
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1. An apparatus for forming a curvilinear void in bony structure, comprising:

  • a curvilinear drilling device, wherein the drilling device includes a curved distal end that is induced to curve by a spring loaded pull wire, and wherein the drilling device includes an axial stiffening wire independent from the pull wire, wherein the drilling device further includes a feedscrew assembly including a feedscrew and a key component;

    a multi-lumen balloon assembly having a hollow shaft and an expandable balloon element mounted on a distal portion of the shaft; and

    a pull wire band, wherein the pull wire band provides an anchor for a distal end of the expandable balloon element,wherein the curvilinear drilling device is configured to be slidably inserted through the hollow shaft of the multi-lumen balloon assembly,wherein the curvilinear drilling device and the multi-lumen balloon assembly are configured to be positioned within a vertebral body,wherein the drilling device further comprises;

    a handle; and

    a flexible drill shaft assembly extending from a distal end of the handle, comprising;

    a cutting tip located at a distal end of the flexible drill shaft assembly;

    a flexible rotatable drive shaft coupled to the tip; and

    a flexible, moveable and non-rotatable housing.

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