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US 12,256,966 B2Granted
Implant and guide
AssigneeMaterialise N.V.
InventorsGuillaume Dubois, Patrick Goudot, Thomas Schouman
Life of this patent
Estimating the term…
Abstract
A method for configuring a surgical guide and an associated implant. The implant and surgical guide are for maxillofacial osteosynthesis. Three-dimensional models of the pre- and post-operative anatomy are used to define attachment points. These attachment points are used to determine a structure for the implant and surgical guide.
Claims13
A method for configuring a maxillofacial implant for osteosynthesis, the method comprising:
- generating, using a computer, a three-dimensional model of a desired post-operative maxillofacial anatomy of a patient, the three-dimensional model indicating at least a simulated osteotomy that defines at least one cut that results in a second bone portion that is separated from a first bone portion within the three-dimensional model, the desired postoperative maxillofacial anatomy corresponding to a selected arrangement of the second bone portion in relation to the first bone portion, said arrangement comprising at least one or more of a translation and a rotation of the second bone portion in relation to the first bone portion;
- defining, using a computer, on the three-dimensional model a first plurality of attachment points for the implant on the first bone portion and a second plurality of attachment points for the implant on the second bone portion,
- wherein said first and second plurality of attachment points are defined on the three-dimensional model based on at least one of a thickness of a bone part and at least one location of one or more anatomical features of the patient;
- and
- determining, using a computer, based on the first and second pluralities of attachment points, a monolithic three-dimensional structure for the implant that couples the first and second pluralities of attachment points in the three-dimensional model, wherein the monolithic three-dimensional structure for the implant has a shape that varies in each of three dimensions to arrange the second bone portion relative to the first bone portion in accordance with the desired post-operative orientation, each of at least one of the attachment points corresponding to an aperture for a bone fixation device in said structure.
2 more elements
A maxillofacial implant for osteosynthesis comprising:
- a first plurality of apertures for coupling the implant to a first maxillofacial bone portion of a patient;
- a second plurality of apertures for coupling the implant to a second maxillofacial bone portion of the patient;
- a monolithic three-dimensional structure that couples the first and second plurality of apertures,
- wherein the three-dimensional structure has a shape that varies in each of three dimensions to arrange the second maxillofacial bone portion relative to the first maxillofacial bone portion in accordance with a desired post-operative orientation,
- wherein the implant is arranged to arrange the second maxillofacial bone portion relative to the first maxillofacial bone portion following an osteotomy that defines at least one cut that results in the second maxillofacial bone portion being separated from the first maxillofacial bone portion,
- wherein the desired post-operative orientation corresponds to a selected arrangement of the second maxillofacial bone portion in relation to the first maxillofacial bone portion, said arrangement comprising at least one or more of a translation and a rotation of the second maxillofacial bone portion in relation to the first maxillofacial bone portion,
- wherein said first and second pluralities of apertures are defined on the implant based on at least one of a thickness of a bone part and at least one location of one or more anatomical features of a patient such that at least a coupling length of the structure between a first set of adjacent apertures is different from a coupling length of the structure between a second set of adjacent apertures,
- wherein the first and second sets of adjacent apertures comprise two sets of apertures with each set comprising adjacent apertures on the same maxillofacial bone portion, or two sets of apertures with each set comprising a first aperture on the first maxillofacial bone portion and a second, adjacent aperture on the second maxillofacial bone portion.
5 more elements
Dependencies are inferred from the claim text.