Patent ID: 7963967

Claim:
A hand-actuated, bone preparation tool and bone access system for use in a percutaneous, extrapedicular approach to accessing the interior of a bone for the purpose of preparing a bone for treatment wherein the bone access system comprises: a cannula having a proximal base and a substantially round, tube-like, curved shaft with an interior lumen, the base having a substantially rectangular configuration, the curved shaft abutting and extending from the base, the base having a substantially round void adjoining with the lumen, the lumen extending the length of the curved shaft; a rigid, cannula introducer having a solid, elongated cylinder, the elongated cylinder having a diameter less than the diameter of the interior lumen of the cannula, the elongated cylinder terminating distally in a cutting surface, the cutting surface having a point and plurality of cutting faces for penetrating the soft tissues, muscles, and bone of a patient and allowing the physician to set the cannula, the cutting faces having a peripheral diameter less than but nearly equal to the diameter of the lumen such that it fills the lumen but may be retracted through the lumen, the elongated cylinder of introducer and cutting surface having a length longer than the cannula such that the cutting surface protrudes from the interior lumen of the cannula, wherein the introducer further comprises a top portion, the top portion being located on the proximal end of the cylinder, the top portion having a diameter larger than the elongated cylinder of the introducer, the top portion further having a diameter larger than the diameter of the cannula, the top portion has a substantially flat surface oriented perpendicularly to the cylinder of the introducer; and the bone preparation tool comprises: an ergonomic handle assembly, a flexible rod having a substantially cylindrical configuration with a curve complementary to the curved shaft of the cannula, the flexible rod further having a diameter smaller than the diameter of the lumen; the ergonomic handle assembly abutting the proximal end of the flexible rod; and the flexible rod terminating distally in a bone preparation tip, wherein the bone preparing tip further comprises: a flat bottom side substantially in the shape of a plane triangle, the flat bottom side shares a longitudinal axis with the rod, a leading edge is set at a substantially right angle intersecting the plane triangle, the leading edge forms a wedge axis for the bone preparing tip substantially shaped as a modified wedge having an off-set cutting blade, the cutting blades having a width less than the radius of the lumen, the rod having a radius less than the width of the cutting blades, the width of the blades and the radius of the rod set at two distinct points relative to and set apart from one another on a horizontal axis.