PROSTHETIC IMPLANT REVISION TOOLS
A tool for removal of a tibial implant a proximal end, and a distal end having an elongated cutting portion, wherein the elongated cutting portion has an edge sharpened for cutting extending a predetermined distance on a first side of the tool, around the distal end, and extending the predetermined distance on a second side of the tool. The tool is configured to release an implanted prosthesis by closely following the bone/implant interface. For example, the tools are used to cut around, dislodge, and remove a tibial component of a prosthetic knee. The edge is situated to be able to cut in many directions while inserted in the knee.
1 . A tool for removal of a tibial implant, comprising:
a proximal end; and
a distal end having an elongated cutting portion, wherein the elongated cutting portion has an edge sharpened for cutting extending a predetermined distance on a first side of the tool, around the distal end, and extending the predetermined distance on a second side of the tool.
2 . The tool of claim 1 , wherein the edge is a radial blade.
3 . The tool of claim 1 , wherein the elongated cutting portion has a first flat surface on a first side of the tool, a second flat surface on a second side of the tool, wherein the second side is opposite of the first side.
4 . The tool of claim 3 , wherein the first flat surface tapers to the second flat surface.
5 . The tool of claim 1 , wherein, while the tool is inserted in a knee for removing the tibial implant, in response to movement in a forward-backward direction, the edge cuts in a corresponding direction.
6 . The tool of claim 1 , wherein, while the tool is inserted in a knee for removing the tibial implant, in response to movement in a left-right direction, the edge cuts in a corresponding direction.
7 . The tool of claim 1 , wherein, while the tool is inserted in a knee for removing the tibial implant, in response to movement in a rotational direction, the edge cuts in a corresponding direction.
8 . The tool of claim 1 , wherein the proximal end includes a connection interface.
9 . The tool of claim 8 , further comprising:
a shaft between the distal end and the connection interface.
10 . The tool of claim 9 , wherein a height of the elongated cutting portion is shorter than a height of the shaft.
11 . A tool for removal of a tibial implant, comprising:
a proximal end;
a distal end having an elongated cutting portion, wherein the elongated cutting portion has an edge sharpened for cutting extending a predetermined distance on a first side of the tool, around the distal end, and extending the predetermined distance on a second side of the tool; and
a shaft between the proximal end and the distal end,
wherein the elongated cutting portion is offset by an offset angle relative to the shaft.
12 . The tool of claim 11 , wherein the offset angle ranges from 35 degrees to 45 degrees.
13 . The tool of claim 11 , wherein the edge is a radial blade.
14 . The tool of claim 11 , wherein the elongated cutting portion has a first flat surface on a first side of the tool, a second flat surface on a second side of the tool, wherein the second side is opposite of the first side.
15 . The tool of claim 14 , wherein the first flat surface tapers to the second flat surface.
16 . The tool of claim 11 , wherein, while the tool is inserted in a knee for removing the tibial implant, in response to movement in a forward-backward direction, the edge cuts in a corresponding direction.
17 . The tool of claim 11 , wherein, while the tool is inserted in a knee for removing the tibial implant, in response to movement in a left-right direction, the edge cuts in a corresponding direction.
18 . The tool of claim 11 , wherein, while the tool is inserted in a knee for removing the tibial implant, in response to movement in a rotational direction, the edge cuts in a corresponding direction.
19 . The tool of claim 11 , wherein the proximal end includes a connection interface.
20 . The tool of claim 11 , wherein a height of the elongated cutting portion is shorter than a height of the shaft.