Low profile patient specific cutting blocks for a knee joint
First Claim
1. A patient specific guide block for a knee, comprising:
- a plurality of bone interfacing portions configured to overlie portions of an end of a bone, wherein a first of the bone interfacing portions extends in an anterior-posterior direction and is adapted to overlie an end portion of the bone, and wherein a second of the bone interfacing portions extends in a superior-inferior direction and is adapted to overlie a side portion of the bone;
an instrument guide extending in a medial-lateral direction and configured to guide a cutting instrument at a fixed angle relative to the bone interfacing portions; and
an exterior surface defining an index marking extending in the superior-inferior direction, the index marking having an orientation and a position based on patient specific imaging data.
1 Assignment
0 Petitions
Accused Products
Abstract
A patient specific guide block for a knee includes a plurality of bone interfacing portions and a cutting slot. The plurality of bone interfacing portions are configured to overlie portions of an end of a bone. The bone interfacing portions each have a surface that is generally a negative of the portion of the bone that the respective bone interfacing portion overlies. The bone interfacing portions are angularly offset from each other such that a first of the bone interfacing portions overlies an anterior portion of the bone, and a second of the bone interfacing portions overlies a portion of bone generally perpendicular to the anterior portion of bone. The cutting slot is oriented in a fixed position relative to the bone interfacing portions such that the cutting slot directs a cutting tool at a fixed angle and at a fixed depth relative to the bone interfacing portions.
22 Citations
20 Claims
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1. A patient specific guide block for a knee, comprising:
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a plurality of bone interfacing portions configured to overlie portions of an end of a bone, wherein a first of the bone interfacing portions extends in an anterior-posterior direction and is adapted to overlie an end portion of the bone, and wherein a second of the bone interfacing portions extends in a superior-inferior direction and is adapted to overlie a side portion of the bone; an instrument guide extending in a medial-lateral direction and configured to guide a cutting instrument at a fixed angle relative to the bone interfacing portions; and an exterior surface defining an index marking extending in the superior-inferior direction, the index marking having an orientation and a position based on patient specific imaging data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A patient specific guide block for a knee, comprising:
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a plurality of bone interfacing portions configured to overlie portions of an end of a bone, wherein a first of the bone interfacing portions extends in an anterior-posterior direction and is adapted to overlie an end portion of the bone, and wherein a second of the bone interfacing portions extends in a superior-inferior direction and is adapted to overlie a side portion of the bone; instrument guide surfaces extending in a medial-lateral direction and configured to guide a cutting tool at a fixed angle relative to the bone interfacing portions; and an exterior surface defining an index marking extending in the superior-inferior direction, the index marking having an orientation and a position based on patient specific imaging data. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A patient specific guide block for a knee, comprising:
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a plurality of bone interfacing portions configured to overlie portions of an end of a bone, the bone interfacing portions angularly offset from each other, wherein a first of the bone interfacing portions extends in an anterior-posterior direction and is adapted to overlie an end portion of the bone, and wherein a second of the bone interfacing portions extends in a superior-inferior direction and is adapted to overlie a side portion of the bone; an instrument guide oriented in a fixed position relative to the bone interfacing portions and configured to guide a cutting tool at a fixed angle relative to the bone interfacing portions; and an exterior surface defining an index marking extending in the superior-inferior direction, the index marking comprising a groove or score extending into the exterior surface and oriented and positioned on the cutting block based on patient specific data derived from imaging data.
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Specification