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US 10,966,732 B2Granted
Tibial guides, tools and techniques for resecting the tibial plateau
AssigneeConforMIS, Inc.
InventorNam T. Chao
Life of this patent
Estimating the term…
Abstract
Various patient-specific tibial guide housings, patient-specific tibial guide boxes, and methods of resecting the tibial plateau are disclosed herein.
Claims16
A system for preparing a tibial plateau of a tibia of a patient, the system comprising:
- a tibial guide housing, the tibial guide housing comprising:
- a top side generally opposite a bottom side a front side generally opposite a back side, and a medial side generally opposite a lateral side;
- a first reference arm having a patient-specific contact surface configured to conform to a first tibial surface, the first tibial surface being a first portion of a superior surface of the tibia;
- a second reference arm having a patient-specific contact surface configured to conform to a second tibial surface, the second tibial surface being a second portion of the superior surface of the tibia,
- wherein the back side includes a patient-specific contact surface configured to conform to a third tibial surface, the third tibial surface being a portion of an anterior surface of the tibia,
- wherein the patient-specific contact surface of the back side has a medial-most edge and a lateral-most edge;
- wherein the tibial guide housing defines a void in at least a portion of the top side, the void sized and positioned such that when the tibial guide housing is positioned on the tibia and the patient-specific contact surfaces of each of the first reference arm, the second reference arm, and the back side are in conforming engagement with the first, second, and third tibial surfaces, respectively, a surgeon is able to view a portion of a peripheral edge of the anterior surface of the tibia, the portion of the peripheral edge of the anterior surface of the tibia having a medial-lateral position disposed between the medial-most edge and the lateral-most edge of the patient-specific surface of the back side;
- and
- one or more tibial cutting guide boxes, each of the one or more tibial cutting guide boxes comprising:
- a guide aperture configured to accommodate a surgical cutting tool and guide the cutting tool along a cutting plane having a predetermined cut depth and angle;
- and
- at least one pin hole configured to accommodate a pin passing into the tibia,
- wherein at least one of the one or more tibial cutting guide boxes is configured for releasable securement within the tibial guide housing.
10 more elements
A method of preparing a tibial plateau of a tibia of a knee joint of a patient for implantation of at least one prosthesis, the method comprising:
- providing a tibial guide housing, the tibial guide housing including:
- a top side generally opposite a bottom side a front side generally opposite a back side, and a medial side generally opposite a lateral side;
- a first reference arm having a patient-specific contact surface configured to conform to a first tibial surface, the first tibial surface being a first portion of a superior surface of the tibia;
- a second reference arm having a patient-specific contact surface configured to conform to a second tibial surface, the second tibial surface being a second portion of the superior surface of the tibia,
- wherein the back side includes a patient-specific contact surface configured to conform to a third tibial surface, the third tibial surface being a portion of an anterior surface of the tibia,
- wherein the patient-specific contact surface of the back side has a medial-most edge and a lateral-most edge;
- wherein the tibial guide housing defines a void in at least a portion of the top side, the void sized and positioned such that when the tibial guide housing is positioned on the tibia and the patient-specific contact surfaces of each of the first reference arm, the second reference arm, and the back side are in conforming engagement with the first, second, and third tibial surfaces, respectively, a surgeon is able to view a portion of a peripheral edge of the anterior surface of the tibia, the portion of the peripheral edge of the anterior surface of the tibia having a medial-lateral position disposed between the medial-most edge and the lateral-most edge of the patient-specific surface of the back side;
- providing a first tibial cutting guide box, the first tibial cutting guide box including:
- a guide aperture configured to accommodate a surgical cutting tool and guide the cutting tool along a cutting plane having a predetermined cut depth and angle;
- and
- at least one pin hole configured to accommodate a pin passing into the tibia;
- releasably securing the first tibial cutting guide box within an opening of the tibial guide housing;
- positioning the tibial guide housing on the tibia such that each of the patient-specific contact surfaces of the tibial guide housing achieves a conforming fit with the tibia;
- and
- inserting a cutting device through the guide aperture and cutting a portion of the tibia along the cutting plane.
12 more elements
Dependencies are inferred from the claim text.