Method and apparatus for bone removal
AssigneeCrosstrees Medical, Inc.
InventorsRichard W. Layne, Lawrence R. Jones, David T. Stinson
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for surgical treatment of vertebrae, comprising a brush-like tamp component for addressing cancellous bone and a slider component that may be distally advanced over the brush-like tamp component while both are (preferably) aligned within a working cannula providing access to a drill channel within the vertebrae. Distal advancement of the slider creates a combination of it and the brush-like component. A handle provides mechanical advantage.
Claims17
An apparatus for insertion into a void within cancellous bone interior to a vertebrae, comprising:
- a tamp including a distal end configured to be advanced into the void and an elongate shaft, at least a portion of the distal end of the tamp being configured to address a first portion of the cancellous bone surrounding the void when the tamp extends along a first longitudinal axis at a first position;
- and
- a slider configured to be distally advanced over at least a portion of the tamp such that the tamp moves from the first position to a second position along a second longitudinal axis parallel to the first longitudinal axis, the distal end of the tamp being radially extended when the slider is distally advanced over the portion of the tamp such that the portion of the distal end of the tamp addresses a second portion of the cancellous bone surrounding the void, the void being enlarged when the second portion of the cancellous bone surrounding the void is addressed by the portion of the distal end of the tamp.
An apparatus for advancement through a cannula, comprising:
- a tamp comprising a distal textured surface and an elongate shaft, the tamp having a cross-sectional profile, the tamp having a length disposed at a first position along a first longitudinal axis when the tamp is introduced into the cannula;
- a slider defining a channel configured to be slidably disposed on at least a portion of the tamp, at least a portion of the channel having a cross-sectional profile complementary to the cross-sectional profile of the tamp such that the slider is matingly engaged with the tamp when the channel of the slider is slidably disposed on the portion of the tamp, the length of the tamp being disposed at a second position along a second longitudinal axis different from and parallel to the first longitudinal axis when the channel of the slider is slidably disposed on the portion of the tamp;
- the slider and the tamp are configured, when the channel of the slider is slidably disposed on the portion of the tamp, to be at least partially and rotatably disposed within a lumen of a cannula, such that (1) a distal end of the tamp is extended from a distal end of the lumen of the cannula into a void within cancellous bone of a vertebrae, and (2) linear alignment of the slider and the tamp within the lumen of the cannula causes the distal end of the tamp to extend radially to address the cancellous bone.
Dependencies are inferred from the claim text.