Bi-directional disk removal and decortication tool
A cutting tool for surgical procedures suitable for bi-directional cutting and removal of soft and hard tissues. The cutting tool includes a substantially rigid shaft having a shaped end portion. The shaped end portion includes a plurality of shaped talons. Each talon has a body bent to retain tissue and has a cutter end. The cutter end has both acute and obtuse cutting surface relief angles for diverse cutting action with respect to hard and soft tissues.
1 . A bi-directional cutting tool for removal of hard and soft biological material comprising:
a shaped head portion;
a plurality of talons extending outwardly from the shaped head portion; and
a shank portion attached to the shaped head portion, each of the talons including a plurality of bends, wherein the plurality of bends are approximately ninety degrees, and each talon includes a first bend along its length in a first plane and a second bend along its length also in the first plane.
2 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 , wherein the plurality of bends extend along the length of each talon terminating in a generally flat cutting surface at the distal end of each talon, the cutting surface oriented to be substantially parallel with respect to the surface of the shaped head portion.
3 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 2 , wherein the bends are provided in proximity to an outer cutting surface so that the distal end of each talon is positioned at an angle with respect to a longitudinal centerline of the bi-directional cutting tool, so that various relief angles are provided all around the cutting surface.
4 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 3 wherein the talons are round in cross-section.
5 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 3 , wherein the bends are constructed and arranged to provide rigidity and controlled flex to the talon.
6 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 3 , wherein higher relief angles reduce load on the talon and allows higher material removal with the same load, while lower relief angles scrape and/or rub the surface to leave a relatively smooth surface finish.
7 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 3 , wherein the bends are axially aligned with respect to each other along the length of each talon.
8 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 3 , wherein the bends are rotated with respect to each other to provide for more or less flexion of one talon with respect to the next talon.
9 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 , wherein the shaped head portion is a flame shape.
10 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 wherein the shaped head portion is a tree shape.
11 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 , wherein a distal end of the shaped head portion includes a spherical radius devoid of talons.
12 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 , wherein a distal end includes talons or bi-directional cutting surfaces at the distal end for drilling and bone shaping.
13 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 , wherein the bi-directional cutting tool is constructed of printed titanium.
14 . The bi-directional cutting tool for removal of hard and soft biological material as claimed in claim 1 , wherein the shank portion includes a connector for quick connection to and release from a driving shaft.
15 . The bi-directional cutting tool of claim 1 , wherein each talon is a single integrally formed material.
16 . The bi-directional cutting tool of claim 15 , wherein each talon is made of titanium material.
17 . The bi-directional cutting tool of claim 1 , wherein the bends of each talon are axially aligned with each other along the length of the talon.
18 . The bi-directional cutting tool of claim 1 , wherein:
each talon is a single integrally formed material; and
the bends of each talon are axially aligned with each other along the length of the talon.
19 . The bi-directional cutting tool of claim 1 , wherein the plurality of talons are formed integral with the shaped head portion.