Advanced Methods, Techniques, Devices, and Systems for Cruciate Retaining Knee Implants
First Claim
Patent Images
1. A tibial implant for positioning on a proximal surface of a patient'"'"'s tibia, the tibial implant comprising:
- an inferior surface, a superior surface, and an outer perimeter edge extending between the inferior and superior surfaces;
a notch sized and shaped to accommodate one or more anatomical structures of the patient'"'"'s knee joint; and
a notch edge extending between the inferior and superior surfaces,wherein at least a portion of the outer perimeter edge is configured to substantially match at least a corresponding portion of a periphery of the proximal surface when the tibial tray is positioned on the proximal surface.
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Accused Products
Abstract
Improved implants, systems, tools and related methods for bi-cruciate retaining joint treatment are disclosed, including patient-adapted implants, systems, tools, and methods.
42 Citations
10 Claims
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1. A tibial implant for positioning on a proximal surface of a patient'"'"'s tibia, the tibial implant comprising:
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an inferior surface, a superior surface, and an outer perimeter edge extending between the inferior and superior surfaces; a notch sized and shaped to accommodate one or more anatomical structures of the patient'"'"'s knee joint; and a notch edge extending between the inferior and superior surfaces, wherein at least a portion of the outer perimeter edge is configured to substantially match at least a corresponding portion of a periphery of the proximal surface when the tibial tray is positioned on the proximal surface. - View Dependent Claims (5, 6, 7, 8, 10)
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2. A surgical tool for use in surgery on a tibia of a knee joint of a patient, comprising:
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a block having a patient-specific surface, the patient-specific surface having at least a portion that is substantially a negative shape of a corresponding portion of an anterior surface of the tibia; a guide configured to accommodate a cutting or drilling tool and having a predetermined position and orientation relative to the patient-specific surface such that, when the patient-specific surface is placed against and aligned with the corresponding portion of the anterior surface of the tibia, the guide defines a cutting or drilling trajectory extending through at least a portion of a proximal end of the tibia; and a stop configured to prevent the cutting or drilling tool from advancing along the cutting or drilling trajectory into one or more anatomical structures of the patient'"'"'s knee joint. - View Dependent Claims (9)
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3. A method of making a tibial implant for a tibia of a knee joint of a patient, the method comprising:
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obtaining imaging data of the knee joint, including at least a portion of the tibia of the knee joint; deriving an outer periphery of a simulated cut surface of the tibia based, at least in part, on the imaging data; deriving information regarding the location and/or size of one or more anatomical structures of the patient'"'"'s knee joint based, at least in part, on the imaging data; selecting a pre-manufactured blank having an exterior perimeter that is larger than the derived outer periphery and having a notch that can accommodate the location and/or size of the one or more anatomical structures; and adapting the exterior perimeter of the selected pre-manufactured blank based, at least in part, on the derived outer periphery.
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4. A method of making a surgical tool for use in surgery on a tibia of a knee joint of a patient, the method comprising:
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obtaining imaging data of the knee joint, including at least a portion of the tibia of the knee joint; deriving a shape of at least a portion of an anterior surface of the tibia based, at least in part, on the imaging data; deriving information regarding the location and/or size of one or more anatomical structures of the patient'"'"'s knee joint based, at least in part, on the imaging data; and designing the surgical tool to include; a block having a patient-specific surface, the patient-specific surface having at least a portion that is substantially a negative of the shape of at least a portion of the anterior surface of the tibia; a guide configured to accommodate a cutting or drilling tool and having a predetermined position and orientation relative to the patient-specific surface such that, when the patient-specific surface is placed against and aligned with the at least a portion of the anterior surface of the tibia, the guide defines a cutting or drilling trajectory extending through at least a portion of a proximal end of the tibia; and a stop configured to prevent the cutting or drilling tool from advancing along the cutting or drilling trajectory into the one or more anatomical structures of the patient'"'"'s knee joint.
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Specification