Intra-oral devices for craniofacial surgery
OwnerCyrus J. Amatoinventor
Life of this patent
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Abstract
Intra-oral devices for distraction osteogenesis are described. Utilizing a medical model, bone-traced fixation plates with undercut portions are custom-fitted to the skeleton of the patient. To these plates rigid distraction platforms are connected. In the pre-surgical stage, skeletal segments are placed in the post-operative position and occlusal splints are constructed. The occlusal splints are modified to interengage the distraction platforms and to provide docking therefor. One or more distractors are mounted on the rigid platform and, upon operation thereof, guide the segment to the distraction endpoint. Optionally, after distraction and during consolidation, the distractors may be removed.
Claims17
An intra-oral distraction device for distraction osteogenesis of the maxillary bone, said intra-oral distraction device for attachment to and disposition upon an anchoring bone or bones each having a contoured surface and contoured edges, said intra-oral distraction device comprising:
- a first fixation plate having an elongated body with an interior surface and an exterior surface, said interior surface being configured for anatomically mating with said contoured surface and for engaging with and about said contoured edges of said anchoring bone to secure the fixation plate to said anchoring bone;
- a docking structure rigidly attached to the first fixation plate for receiving an occlusal splint coupled to the maxillary bone to be distracted;
- and
- a distractor attached to said docking structure and coupled to the maxillary bone for distracting the maxilla bone of the patient relative to the anchoring bone the coupling of the docking structure and the distractor to the splint for providing omnidirectional control of said distraction.
An intra oral distraction device for maxillofacial distraction osteogenesis and for attachment to and disposition upon a malar bone of a patient, said malar bone having first and second segments each having a contoured surface, said intra-oral device comprising:
- a pair of fixation plates each corresponding to and for attachment to a different one of said first and second malar bone segments, each fixation plate having an elongated body with an interior surface and an exterior surface, each said distraction fixation plate interior surface having a contour configured to anatomically mate with said contoured surface of said corresponding first and second segments of the malar bone;
- a docking structure for coupling to the upper dentition of a patient including a docking bar and a distractor attached to the docking bar, the docking bar and distractor for receiving an occlusal splint coupled to the docking bar and to the upper dentition, the coupling of the distractor and docking bar to the occlusal splint for providing omnidirectional control of the positioning of the maxillary bone via the upper dentition;
- and
- an attachment arrangement for rigidly connecting said fixation plates to the docking structure;
- whereby distraction osteogenesis is enabled with full omnidirectional vector control of the positioning of the maxilla bone.
Dependencies are inferred from the claim text.