X-ray based cutblock positioning jig
AssigneeBiomet Manufacturing, LLC
InventorsBrian A. Uthgenannt, Robert Metzger
Life of this patent
Estimating the term…
Abstract
A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.
Claims19
A system for positioning a guide relative to a knee bone of a patient, the system comprising:
- a base having a knee bone-facing surface and an opposing second surface;
- and
- at least one alignment member configured to be moveably received by the base so as to be moveable towards and away from the knee bone to adjust a spacing of the base relative to the knee bone to achieve a desired positioning for the base relative to the knee bone, wherein the at least one alignment member is configured to be set at a predetermined alignment member setting corresponding to the desired positioning for the base with position indicia indicating such setting and optional variations of such setting, wherein the desired positioning is based on one or more x-rays of the patient that identify patient specific characteristics of the knee bone including one or more of the anterior cortex of the diaphysis of a femur, a flexion/extension gap, and a desired varus/valgus alignment.
A system for positioning a guide relative to a knee bone of a patient, the system comprising:
- a base having a knee bone-facing surface and an opposing second surface;
- and
- at least one alignment member configured to be moveably received by the base so as to be moveable towards and away from the knee bone to adjust a spacing of the base relative to the knee bone to achieve a desired positioning for the base relative to the knee bone, wherein the at least one alignment member is configured as a dial including a position indicator that identifies a rotational position of the at least one alignment member, wherein the position indicator has a neutral position that corresponds to the desired positioning for the base, wherein the desired positioning is based on one or more x-rays of the patient that identify patient specific characteristics of the knee bone including one or more of the anterior cortex of the diaphysis of a femur, a flexion/extension gap, and a desired varus/valgus alignment, and wherein the at least one alignment member defines a guide member configured to direct the fixation pin to the knee bone in a patient-specific location as determined by the x-rays of the patient.
A system for positioning a guide relative to a knee bone of a patient, the system comprising:
- a base having a knee bone-facing surface and an opposing second surface;
- and
- at least one alignment member configured to be moveably received by the base so as to be moveable towards and away from the knee bone to adjust a spacing of the base relative to the knee bone to achieve a desired positioning for the base relative to the knee bone, wherein the at least one alignment member is configured to be set at a predetermined alignment member setting corresponding to the desired positioning for the base with position indicia indicating such setting and optional variations of such setting, wherein the desired positioning is based on one or more x-rays of the patient that identify patient specific characteristics of the knee bone including one or more of the anterior cortex of the diaphysis of a femur, a flexion/extension gap, and a desired varus/valgus alignment, and wherein the base includes a first part configured to face a distal portion of the knee bone and a second part configured to face a posterior portion of the knee bone.
Dependencies are inferred from the claim text.