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US 10,869,705 B2Granted
Implant and guide
AssigneesObl, Universite Pierre Et Marie Curie (Paris 6), Assistance Publique—Hôpitaux de Paris (Paris)
InventorsGuillaume Dubois, Patrick Goudot, Thomas Schouman
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Abstract
An implant and guide are described, together with methods for configuring the same. The implant and guide are for maxillofacial osteosynthesis and may be provided as a kit. Three-dimensional models of the pre- and post-operative anatomy are used to define attachment points. These attachment points are used to define a structure for the implant and the guide.
Claims14
A kit for maxillofacial osteosynthesis comprising:
- 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;
- and
- 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, said osteotomy resulting in an absence of any bone coupling the first and second bone portions together,
- 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 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 plurality of apertures are defined on the implant based on at least one location of one or more anatomical features of the patient;
- and
- a maxillofacial surgical guide comprising:
- a third plurality of apertures for guiding a drilling operation with respect to the first maxillofacial bone portion of the patient;
- a fourth plurality of apertures for guiding the drilling operation with respect to the second maxillofacial bone portion of the patient;
- and
- a monolithic three-dimensional structure for the surgical guide that couples the third and fourth plurality of apertures,
- wherein the monolithic three-dimensional structure for the surgical guide defines an inner surface that varies in each of three dimensions,
- wherein the inner surface has a shape that aligns with an outer surface defined by the first maxillofacial bone portion and the second maxillofacial bone portion in a pre-operative state,
- wherein the monolithic three-dimensional structure for the surgical guide is configured such that the inner surface aligns with the outer surface in a single configuration in three-dimensional space,
- wherein said third and fourth plurality of apertures are defined on the surgical guide based on the at least one location of the one or more anatomical features of the patient;
- wherein locations of the third and fourth plurality of apertures in the maxillofacial surgical guide correspond to mapped locations of the first and second plurality of apertures in the maxillofacial implant;
- wherein the locations of the third and fourth plurality of apertures in the maxillofacial surgical guide correspond to a pre-operative maxillofacial anatomy;
- and
- wherein the locations of the first and second plurality of apertures in the maxillofacial implant correspond to a desired post-operative maxillofacial anatomy.
20 more elements
Dependencies are inferred from the claim text.