A force adjustable spring distractor device having an elongated, relatively thin guide plate, a force adjusting rod member having first and second oppositely threaded portions, first and second anchor bodies mounted on the guide plate and the threaded portions of the rod, first and second distractor bodies mounted on the guide plate and the rod, and first and second distraction springs connecting the anchor bodies to the distractor bodies, whereby rotation of the force adjusting rod results in separation of the anchor bodies and elongation of the distraction springs, thereby imparting a separation force to the distractor bodies.

The present invention relates to a jawbone distraction system and control method thereof, including a jawbone extension apparatus, a remote controller and a monitor, the jawbone distractor being configured to allow a horizontal shift of alveolar bone as well as performing vertical jawbone distraction, being precisely controlled in a wireless mode and configured to control a drive of the jawbone distractor through the remote controller while ascertaining a driving state by the monitor.

An orthodontic/orthognathic device for correcting and changing tooth placements and bone structure, and a method of using orthodontic/orthognathic device for tooth movement, correcting syndromic conditions of the mouth and osteogenetic correction. The device may be used for maxillary distraction and expansion as well as mandibular separation and expansion. The device can be controlled by computer to direct tooth and bone placement.

Transport distraction apparatus for performing transport distraction osteogenesis is provided which includes a track capable of being formed into a curvilinear shape with a carriage movable longitudinally along the track. The carriage has a fixation plate secured or securable to it and at least one gear for moving the carriage along the track in order to adjust its position relative to the length of the track. The track has a series of formations extending along one edge of the track and engaged by the gear which is at least partially accommodated within a space between a plane including the front face of the track and a plane including the rear face of the track. Preferably, the apparatus creates a gap between a central region of the track and a patient's bone in use. A fixation plate is also provided.

A mandibular repositioning apparatus may include anchoring devices shaped for positioning in an intraoral cavity of a patient. Each of the anchoring devices may be configured to be positioned in a respective bone of a respective jaw of the patients. The mandibular repositioning apparatus may include one or more connecting structures configured to displace a lower jaw in an anterior-posterior direction relative to an upper jaw. The one or more connecting structures and the anchoring devices may be configured to be arranged to produce an anterior-posterior force component to move the lower jaw that is greater than a vertical force component.

An external distraction apparatus for performing a craniofacial distraction is disclosed. The external distraction apparatus may comprise a stationary member. The stationary member may be configured to be affixed to a head of a patient. The external distraction apparatus may also comprise laterally disposed distractors. The laterally disposed distractors may extend inferiorly from the stationary member and be moveable relative to the stationary member. The external distraction apparatus may comprise a motor and controller. The motor may be powered with the controller to perform a craniofacial distraction in an automated fashion.

A pediatric mandibular distractor comprising a housing member elongating along a longitudinal axis, the housing member having at least one elongated slot elongating along at least a portion of the longitudinal axis and opening laterally through at least a side portion of the housing member; at least one fixed footplate attached to the housing member; a drive rod; and at least one moveable footplate engageable with the drive rod through the elongated slot by a connector. Wherein, when the fixed and moveable footplates are attached to the respective first and second bone surfaces, a bottom portion of the housing member is proximate to the first and second bone surfaces, and the side portion is further from the bone surfaces than the bottom portion in a direction transverse to the longitudinal axis. Methods of assembling and installing the exemplary pediatric mandibular distractor summarized above are also disclosed.

An implantable device comprising a driving unit and a kinematic assembly joined together: the driving includes, in an hermetic capsule, electromechanical component, like an electric motor and, the battery pack, and electronic elements, while the kinematic assembly includes a reducer and an actuator, for example a lead-screw distractor, and is lubricated by body fluids. Mechanical energy is transmitted without contact from the former to the latter by a magnetic transmission.

A maxilla holder includes a base plate and a connecting member. One end of the connecting member is connected with the base plate which extends along a pre-designed occlusal plane while the other end of the connecting member includes at least two supporting portions. With the supporting portions abutting against the cranium, the base plate is positioned so that the maxilla is located in a pre-planned position once it is moved onto the base plate.

A control system for use with an adjustable bone fixation device including a first fixation element and a second fixation element connectable to bone tissue portions on either side of a treatment site, the control system including: one or more actuators configured to controllably adjust lengths of a plurality of adjustable length struts of the bone fixation device, the plurality of adjustable length struts connecting the first and the second fixation elements of the bone fixation device, length adjustment thereof changing a spatial relationship between the first and the second fixation elements; and circuitry configured to control the one or more actuators to cause the first and second fixation elements to perform an accordion maneuver by performing a plurality of actuations to adjust lengths of the plurality of adjustable length struts to create a reciprocal movement of the first and second fixation elements relative to each other.