A mandibular fixation device overcomes the low operability of the conventional mandibular fixation device. The mandibular fixation device includes a sleeve, a first screw rod, a second screw rod and two positioning members. The sleeve includes two ends respectively provided with first and second screw holes. The first and second screw holes have opposite spiral directions. The first screw rod has a first threaded portion and a first assembly portion. The first threaded portion is threadedly engaged with the first screw hole, and the first assembly portion is located outside of the sleeve. The second screw rod has a second threaded portion and a second assembly portion. The second threaded portion is threadedly engaged with the second screw hole, and the second assembly portion is located outside of the sleeve. The two positioning members are coupled with the first and second assembly portions, respectively.

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 distractor, such as a pediatric mandibular distractor, includes a housing member elongated along a longitudinal axis. At least one distal footplate is attached to the housing member. A drive rod and at least one proximal footplate configured to be driven by the drive rod are provided. A housing engaging member is configured to engage a drive rod engaging member to prevent the housing from being rotated in either a first or second direction of rotation relative to the drive rod when a rotational force less than a predetermined force is applied to the housing or drive rod. The drive rod can be rotated relative to the housing in either the first or second rotational direction when a force greater than the predetermined force is applied to the drive rod or the housing.

The invention relates to a plate distractor, particularly a maxillofacial plate distractor, comprising a first (12) and a second (14) fixing plate, a threaded pin (24) mounted in a freely rotatable and translatably fixed manner in relation to the first fixing plate (14), a screwed tube (26) fixed to the second fixing plate (12), a permanent magnet (20) extending in a main direction, which is magnetised transversely to the main direction and mounted in the plate distractor (10) such that the rotation of the magnet (20) on itself, about an axis of rotation (D) parallel to the main axis, causes a relative rotation of the threaded pin (24) in relation to the screwed tube (26), the magnet (20) being arranged close to one of the ends of the plate distractor (10).

A maxillomandibular fixation (MMF) device having an arch bar with a plurality of spaced tabs and gaps, and further having apertured mounting plate members mounted onto the arch bar, each mounting plate member having a slot to receive a tab on the arch bar, whereby the mounting plate members may be repositioned laterally along the arch bar from one tab to another prior to affixing the MMF device to the maxilla or mandible of a patient in order to position the mounting plate members at locations where the underlying tooth root will not be damaged by insertion of a bone screw.

A detachable actuator arm as part of or in combination with an osteogenesis distractor device, the actuator arm being detachable from the distraction mechanism of the distractor device by manipulation of a proximally disposed release mechanism.

A medical device and method of expanding the maxilla of a patient via application of intra-orally generated forces and/or applying externally generated protraction forces to the maxilla of the patient is provided. The medical device can embody multiple configurations device that include skeletal anchorage device alone or in combination with a fixed aligner or an adjustable aligner.

A mandibular fixation device is provided to overcome the low operability of the conventional mandibular fixation device. The mandibular fixation device includes a sleeve, a first screw rod, a second screw rod and two positioning members. The sleeve includes two ends respectively provided with first and second screw holes. The first and second screw holes have opposite spiral directions. The first screw rod has a first threaded portion and a first assembly portion. The first threaded portion is threadedly engaged with the first screw hole, and the first assembly portion is located outside of the sleeve. The second screw rod has a second threaded portion and a second assembly portion. The second threaded portion is threadedly engaged with the second screw hole, and the second assembly portion is located outside of the sleeve. The two positioning members are coupled with the first and second assembly portions, respectively.

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.

The disclosure is directed to a device and method of treating bone formation disorders or conditions by bioengineering a targeted bone tissue and modulating the homeostasis of osteogenesis and bone resorption by a localized delivery of peripheral blood mononuclear cells and/or hematopoietic stem cells, and/or cells, such as osteoclasts, obtained by the ex vivo differentiation of these cells. A therapeutic strategy, as well as a device to deliver the therapeutic strategy, is described herein.