Orthognathic implant and methods of use
First Claim
Patent Images
1. An implant configured to fix at least a first mandibular bone part relative to a second mandibular bone part that is separated from the first mandibular bone part by a bone gap, the implant comprising:
- a plate member including a pre-operatively bent body having a shape corresponding to a post-operative shape of a mandible when aligned with the mandible, the plate member including a first surface configured to face at least one of the first and second mandibular bone parts, a second surface opposite the first surface, the plate member defining a plate fixation aperture that extends through the pre-operatively bent body from the first surface to the second surface along a central aperture axis, and is configured to receive a bone fixation element so as to secure the plate member to the mandible, the plate member further including an upper surface and a lower surface, the upper surface extends between the first and second surfaces, and the lower surface is opposite the upper surface and extends between the first and second surfaces; and
at least one guide including a guide body, the guide body including an alignment portion defining an inner bone contacting surface that is pre-shaped to correspond to the post-operative shape of the mandible, the guide body defining a guide fixation aperture, the at least one guide configured to be coupled to the plate member such that;
1) the at least one guide abuts each of the second surface, the upper surface, and the lower surface,
2) the guide fixation aperture is aligned with the plate fixation aperture, and
3) the central aperture axis does not intersect the at least one guide, the at least one guide pre-operatively configured to align the plate member with the mandible when the implant is positioned against the mandible after the mandible has been separated so as to define the bone gap.
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Abstract
An implant for use in orthognathic surgery of a mandible may include a longitudinal plate member and a plurality of pre-configured guides coupled to the plate member. The longitudinal plate member is pre-bent to correspond to the post-operative shape of the mandible; and the guides are pre-configured to align the plate member with the mandible when the implant is positioned against the mandible after the mandible has been separated.
61 Citations
18 Claims
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1. An implant configured to fix at least a first mandibular bone part relative to a second mandibular bone part that is separated from the first mandibular bone part by a bone gap, the implant comprising:
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a plate member including a pre-operatively bent body having a shape corresponding to a post-operative shape of a mandible when aligned with the mandible, the plate member including a first surface configured to face at least one of the first and second mandibular bone parts, a second surface opposite the first surface, the plate member defining a plate fixation aperture that extends through the pre-operatively bent body from the first surface to the second surface along a central aperture axis, and is configured to receive a bone fixation element so as to secure the plate member to the mandible, the plate member further including an upper surface and a lower surface, the upper surface extends between the first and second surfaces, and the lower surface is opposite the upper surface and extends between the first and second surfaces; and at least one guide including a guide body, the guide body including an alignment portion defining an inner bone contacting surface that is pre-shaped to correspond to the post-operative shape of the mandible, the guide body defining a guide fixation aperture, the at least one guide configured to be coupled to the plate member such that;
1) the at least one guide abuts each of the second surface, the upper surface, and the lower surface,
2) the guide fixation aperture is aligned with the plate fixation aperture, and
3) the central aperture axis does not intersect the at least one guide, the at least one guide pre-operatively configured to align the plate member with the mandible when the implant is positioned against the mandible after the mandible has been separated so as to define the bone gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implant configured to fix at least a first mandibular bone part relative to a second mandibular bone part that is separated from the first mandibular bone part by a bone gap, the implant comprising:
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a plate member including a pre-operatively bent body having a shape corresponding to a post-operative shape of a mandible when aligned with the mandible, the plate member defining a first plate fixation aperture, a second plate fixation aperture, and a third plate fixation aperture that each extend through the pre-operatively bent body and that each are configured to receive a bone fixation element so as to secure the plate member to the mandible; and a guide including a guide body having an inner surface, the inner surface defining a plurality of non-linear undulations, the inner surface configured to face the plate member when the guide is coupled to the plate member, the guide body further including an outer surface opposite the inner surface, the guide defining a first guide aperture that extends through the guide body between the inner surface and the outer surface along a first central axis, a second guide aperture that extends through the guide body between the inner surface and the outer surface along a second central axis, and a third guide aperture that extends through the guide body between the inner surface and the outer surface along a third central axis, the guide configured to be coupled to the plate member such that each of the first guide aperture, the second guide aperture, and the third guide aperture is aligned with a respective one of the first plate fixation aperture, the second plate fixation aperture, and third plate fixation aperture, wherein the guide is configured such that any straight line that intersects two of the first, second, and third central axes, does not intersect the remaining one of the first, second, and third central axes. - View Dependent Claims (14, 15)
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16. An implant configured to fix at least a first mandibular bone part relative to a second mandibular bone part that is separated from the first mandibular bone part by a bone gap, the implant comprising:
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a plate member including a pre-operatively bent body having a shape corresponding to a post-operative shape of a mandible when aligned with the mandible, the plate member defining a first plate fixation aperture, a second plate fixation aperture, and a third plate fixation aperture that each extend through the pre-operatively bent body and that each are configured to receive a bone fixation element so as to secure the plate member to the mandible; and a guide including a guide body having an inner surface configured to face the plate member when the guide is coupled to the plate member, the inner surface pre-operatively curved to correspond to a post-operative shape of the mandible, the guide body further including an outer surface opposite the inner surface, the guide defining a first guide aperture that extends through the guide body between the inner surface and the outer surface along a first central axis, a second guide aperture that extends through the guide body between the inner surface and the outer surface along a second central axis, and a third guide aperture that extends through the guide body between the inner surface and the outer surface along a third central axis, the guide configured to be coupled to the plate member such that each of the first guide aperture, the second guide aperture, and the third guide aperture is aligned with a respective one of the first plate fixation aperture, the second plate fixation aperture, and third plate fixation aperture, wherein the guide is configured such that any straight line that intersects two of the first, second, and third central axes, does not intersect the remaining one of the first, second, and third central axes. - View Dependent Claims (17, 18)
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Specification