Computer-assisted surgery system and method for orienting a knee implant
AssigneeOrthosoft Inc.
InventorsCATHERINE LEVEILLE, BENOIT PELLETIER, BRUNO FALARDEAU, KARINE DUVAL
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Abstract
A reference jig comprises a base adapted to be secured to a distal end of a bone. An adjustment mechanism has a bracket, one or more rotational joints operatively mounting the bracket to the base, whereby the bracket is rotatable in two or more rotational degrees of freedom relative to the base, and one or more translational joints. A landmark alignment unit is operatively connectable to the bracket by the at least one translational joint, the landmark alignment unit having a bone alignment component configured to be aligned with at least one bone landmark.
Claims20
A reference jig comprising:
- a base adapted to be secured to a distal end of a bone;
- an adjustment mechanism having
- a bracket,
- at least one rotational joint operatively mounting the bracket to the base, whereby the bracket is rotatable in at least two rotational degrees of freedom relative to the base, and
- at least one translational joint;
- and
- a landmark alignment unit operatively connectable to the bracket by the at least one translational joint, the landmark alignment unit having a bone alignment component configured to be aligned with at least one bone landmark.
A cut guide comprising:
- a bone anchor adapted to be received in a bone and project beyond a resected bone plane;
- a base having defining an underside with a sliding plane adapted to be laid against the resected bone plane;
- at least one rotational joint operatively mounting the bone anchor to the base, whereby the bracket is rotatable in a rotational degree of freedom while sliding on the resected bone plane, and
- an inertial sensor unit mounted to the base for determining an orientation of the resected bone plane.
The cutting guide according to claim 17, further comprising at least one translational joint and a landmark alignment unit operatively connectable to the bracket by the at least one translational joint, the bone landmark alignment unit having a bone alignment component configured to be aligned with at least one bone landmark.
The cutting guide according to claim 18, wherein the bone alignment component is a posterior abutment adapted to abut posterior aspects of the bone.
The cutting guide according to claim 19, wherein the posterior abutment is a condylar abutment adapted to abut against posterior aspects of condyles.
Dependencies are inferred from the claim text.