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US 2015/0088142 A1Published application
Patient specific instrument
AssigneeSmith & Nephew, Inc.
InventorLuke Andrew Gibson
Life of this patent
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Abstract
A femoral cutting guide includes guide slots for guiding the movement of cutting tools relative to a distal portion of a femur, a surface feature adapted to at least partially conform to a resected surface of the distal portion of the femur, and either a posterior-facing surface adapted to conform to an anterior, unaltered surface of the distal portion of the femur or an anterior-facing surface adapted to conform to a posterior, unaltered surface of the distal portion of the femur.
Claims20
A femoral cutting guide comprising:
- a plurality of guide slots for guiding the movement of cutting tools relative to a distal portion of a femur;
- a surface feature adapted to at least partially conform to a resected surface of the distal portion of the femur;
- and
- a patient-specific surface comprising one of a posterior-facing surface adapted to conform to an anterior, unaltered surface of the distal portion of the femur and an anterior-facing surface adapted to conform to a posterior, unaltered surface of the distal portion of the femur;
- wherein the cutting guide is shaped to mate with the distal portion of the femur in a predetermined orientation when the surface feature engages the resected surface of the distal femur and the patient-specific surface simultaneously engages an unaltered surface of the distal femur.
2 more elements
A patient-specific femoral cutting guide, comprising:
- an anterior portion comprising one or more surfaces adapted to substantially conform to an unaltered, anterior portion of a distal portion of a femur and at least one guide slot for guiding the movement of a cutting tool relative to the unaltered, anterior portion of the distal portion of the femur;
- a posterior portion comprising one or more surfaces adapted to substantially conform to an unaltered, posterior portion of the distal portion of the femur and at least one guide slot for guiding the movement of a cutting tool relative to the unaltered, posterior portion of the distal portion of the femur;
- and
- a substantially planar surface feature extending between the anterior portion and the posterior portion and adapted to at least partially conform to a resected surface of the distal portion of the femur.
1 more element
A method of resectioning a distal femur, comprising:
- positioning a surface feature of a cutting guide against a first resected surface of the distal femur;
- positioning a posterior-facing surface of the cutting guide against an anterior, unaltered surface of the distal femur, the posterior-facing surface having a patient-specific contour shaped to conform to a portion of the anterior, unaltered surface of the distal femur;
- positioning an anterior-facing surface of the cutting guide against a posterior, unaltered surface of the distal femur, the anterior-facing surface having a patient-specific contour shaped to conform to a portion of the posterior, unaltered surface of the distal femur;
- and
- while the surface feature is positioned against the first resected surface of the distal femur, the posterior-facing surface is positioned against the anterior, unaltered surface of the distal femur, and the anterior-facing surface is positioned against the posterior, unaltered surface of the distal femur, using the cutting guide to guide one or more cutting tools relative to the distal femur to form one or more resections of the distal femur.
2 more elements
Dependencies are inferred from the claim text.