Patient-specific-bone-cutting guidance instruments and methods
First Claim
Patent Images
1. A method for cutting or resurfacing an outer bone surface of a bone of a patient comprising:
- mating a patient-specific surface of a patient-specific alignment guide on the outer bone surface, the patient-specific surface preoperatively configured as a negative surface of the outer bone surface;
inserting a reference pin into the bone through a guiding aperture of the patient-specific alignment guide;
removing the patient-specific alignment guide without removing the reference pin;
coupling a resurfacing instrument to the reference pin to register the resurfacing instrument relative to the outer bone surface; and
operating a cutting effector coupled to the resurfacing instrument to resurface the outer bone surface,wherein operating the cutting effector further includes operating the cutting effector having a patient-specific cutting surface to form a patient-specific cutting surface mirroring the outer bone surface to remove cartilage.
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Abstract
An orthopedic device for cutting or resurfacing an outer bone surface of a bone of a patient includes first and second guides. Each guide has a patient-specific surface preoperatively configured as a negative surface of a portion of the outer bone surface of the bone and a plurality of elongated slots. The elongated slots of the second guide are offset relative to the elongated slots of the first guide and configured for guiding a tool to resurface the outer bone surface.
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Citations
19 Claims
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1. A method for cutting or resurfacing an outer bone surface of a bone of a patient comprising:
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mating a patient-specific surface of a patient-specific alignment guide on the outer bone surface, the patient-specific surface preoperatively configured as a negative surface of the outer bone surface; inserting a reference pin into the bone through a guiding aperture of the patient-specific alignment guide; removing the patient-specific alignment guide without removing the reference pin; coupling a resurfacing instrument to the reference pin to register the resurfacing instrument relative to the outer bone surface; and operating a cutting effector coupled to the resurfacing instrument to resurface the outer bone surface, wherein operating the cutting effector further includes operating the cutting effector having a patient-specific cutting surface to form a patient-specific cutting surface mirroring the outer bone surface to remove cartilage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for cutting and resurfacing an outer bone surface of a bone of a patient, comprising:
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positioning a reference pin in a preoperatively determined alignment direction relative to the outer bone surface; coupling a first portion of a resurfacing instrument to the alignment pin in a position configured to be aligned along the alignment direction; coupling a second portion of the resurfacing instrument to the first portion of the resurfacing instrument to position a cutting effector carried by the second portion in a preoperatively determined position relative to the outer bone surface; and operating the cutting effector coupled to the second portion of the resurfacing instrument to resurface the outer bone surface, wherein operating the cutting effector further includes operating the cutting effector having a patient-specific cutting surface to form a patient-specific cutting surface mirroring the outer bone surface to remove cartilage. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for cutting or resurfacing an outer bone surface of a bone of a patient, comprising:
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mating a patient-specific surface of a patient-specific alignment guide on the outer bone surface, the patient-specific surface preoperatively configured as a negative surface of the outer bone surface; inserting a reference pin into the bone through a guiding aperture of the patient-specific alignment guide; removing the patient-specific alignment guide without removing the reference pin; coupling a guiding member to the reference pin; coupling a guide tube carrying a cutting effector over the guiding member to position the cutting effector at a preoperatively determined patient-specific position; and operating the cutting effector to resurface the outer bone surface, wherein operating the cutting effector further includes operating the cutting effector having a patient-specific cutting surface to form a patient-specific cutting surface mirroring the outer bone surface to remove cartilage. - View Dependent Claims (19)
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Specification