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US 9,066,733 B2Granted
Orthognathic implant and methods of use
AssigneeDePuy Synthes Products, Inc.
InventorsAndre Furrer, Timo Zillig, Marc Christian Metzger
Life of this patent
Estimating the term…
Abstract
An implant for use in orthognathic surgery of a maxilla may include a longitudinal plate member and a plurality of pre-shaped fingers extending from an upper edge of the plate member. The longitudinal plate member is pre-shaped to correspond to the pre-operative shape of the maxilla; and the fingers are pre-shaped to correspond to the shape of the maxilla. The fingers may be pre-shaped to correspond to either the pre-operative shape or the post-operative shape of the maxilla.
Claims18
An osteotomy guiding implant comprising:
- a plate member that is pre-shaped to correspond to a pre-operative shape of a maxilla, the plate member, pre-operatively, defining non-linear undulations that match particular surface portions of the maxilla such that the non-linear undulations are configured as an alignment mechanism that aligns the plate member with the maxilla;
- a template portion extending from the plate member having an inner surface that is shaped pre-operatively to match the pre-operative shape of the maxilla, and an outer surface opposite the inner surface, the template portion defining at least four apertures that extend from the outer surface to the inner surface, are aligned along a single plane, and are arranged to provide a template for pre-osteotomy drilling holes that are aligned along a cutting guide path in the maxilla that extends along the single plane so as to define a boundary that separates a first portion of the maxilla from a second portion of the maxilla, whereby the first portion becomes segmented from the second portion after a cutting instrument has cut through the maxilla along the cutting guide path.
An orthognathic surgical kit comprising:
- an osteotomy guiding implant that is shaped pre-operatively, the osteotomy guiding implant comprising a plate member and defining a plurality of apertures, the apertures being arranged to provide a predetermined template for pre-osteotomy drilling holes that are aligned along a cutting guide path in a maxilla so as to define a boundary that separates a first portion of the maxilla from a second portion of the maxilla, the drilling holes being arranged along a single plane, whereby the first portion becomes segmented from the second portion after a cutting instrument has cut through the maxilla along the cutting guide path, wherein the plate member of the osteotomy guiding implant is shaped pre-operatively to correspond to the shape of the maxilla before the first portion has become segmented from the second portion;
- and
- a bone fixation implant comprising a plate member pre-shaped to correspond to the first portion of the maxilla after
- the first portion has become segmented from the second portion;
- at least one finger that extends from the plate member and is pre-shaped to correspond to the second portion of the maxilla after the first portion has become segmented from the second portion, and has moved with respect to the second portion.
2 more elements
A bone fixation implant configured to be separated into at least two separate bone implant segments, the bone fixation implant comprising:
- a plate member having a first curved portion and a second curved portion spaced from the first curved portion along a direction of elongation, the first curved portion defining at least one aperture that is configured to receive a fixation element so as to secure the first curved portion to bone, and the second curved portion defining at least one aperture that is configured to receive a fixation element so as to secure the second curved portion to bone, the plate member further including a bridge portion that includes a bridge plate, and first and second extensions that project from respective outer ends of the bridge plate so as to adjoin with the first and second curved portions at respective first and second junctions, wherein the bridge plate is offset from each of the first and second curved portions along a direction that is normal to the direction of elongation;
- and
- at least one finger extending from the first curved portion, and at least one finger extending from the first and second curved portion, each of the at least one fingers finger defining at least one aperture that is configured to receive a fixation element so as to secure the respective finger to bone,
- wherein the first and second junctions are weakened with respect to a remaining portion of the plate member, such that after the first and second curved portions have been secured to bone, the first and second junctions are breakable so that the bridge portion is removable from the first and second curved portions, thereby defining a gap that extends between the first curved portion of the plate member and the second curved portion of the plate member along the direction of elongation.
1 more element
Dependencies are inferred from the claim text.