US 10,327,786 B2 · Patient-specific instrumentation and method for articular joint repair

Abstract

Patient-specific instrumentation for use when performing articular joint repair is provided. A patient-specific jig is adapted to be positioned over a bone at an articular surface thereof for assisting in preparing the bone surface for reception of a prosthesis. The jig comprises a bone contacting portion adapted to matingly contact a portion of the articular surface of the bone and a cutting slot adapted to receive therein a saw blade for resecting the articular surface of the bone. The cutting slot may be press-fitted into the opening of a cut guide. A patient-specific plate and a patient-specific rotational guide are also provided for guiding a positioning of the prosthesis over the resected surface of the bone. A method for manufacturing the patient-specific jig is further provided.

Claims20

Dependent claims

An assembly of a tool and of a patient-specific rotational guide for guiding a positioning of the tool on a planar resected surface of a bone in an articular joint repair procedure, the assembly comprising:

the tool having a planned position relative to the planar resected surface of the bone and having a plate portion with a flat surface adapted to be placed against the planar resected surface such that the plate portion with the flat surface moves along the planar resected surface;
the rotational guide including a body, a tool attachment member attached to the tool, and a bone contacting member having a bone contacting surface adapted to contact a bone and shaped using patient-specific modeling to conform to a shape of a bone surface adjacent to the planar resected surface, a patient-specific arrangement between the rotational guide, the tool and the bone corresponding to a pre-operative planning defined by a mating contact between said bone surface and the bone contacting surface when the tool is positioned in the planned position on the planar resected surface.

A system of a patient-specific jig and patient-specific model for preparing an articular surface of a bone in an articular joint repair procedure, the system comprising:

the patient-specific model including a geometry of the patient-specific jig relative to the bone and including a bone contacting member and a cutting guide corresponding to a planned mating contact between the patient-specific jig and to a planned planar resected surface aligned with the cutting guide;
the patient specific jig including at least one bone contacting member adapted to contact a bone and having at least two mating surfaces shaped using patient-specific modeling to conform to a shape of the articular surface, the mating surfaces adapted to matingly contact a portion of the articular surface, and a cutting guide adjacent to the at least one bone contacting member and having an elongated slot defined by a pair of parallel surfaces defining an aperture adapted to receive therein a saw blade for resecting the articular surface into a resected surface parallel to the aperture, the elongated slot being in a portion of the bone contacting member between the two mating surfaces.

Dependencies are inferred from the claim text.

Patient-specific instrumentation and method for articular joint repair

Life of this patent

Patient-specific instrumentation and method for articular joint repair

Life of this patent

Abstract

Claims20