Dentistry – Orthodontics – By device having means to apply outwardly directed force
Patent
1994-04-21
1995-08-08
Lucchesi, Nicholas D.
Dentistry
Orthodontics
By device having means to apply outwardly directed force
A61C 300
Patent
active
054393779
ABSTRACT:
In an orthodontic appliance, two halves of a jack body are connected by a screw and have parallel rods with tooth-encircling bands. Each half of the jack body includes an extension connected to the body by an adjustment mechanism for moving the extension perpendicularly to the jack screw. The extensions can be located on the same side of the jack body on opposite sides of the jack body, or on both sides of the jack body. The halves of the jack body are separated by rotating an adjuster connected to the jack screw. The extensions are moved by the respective adjustment mechanism. In an alternative embodiment of the invention, the jack screw is separated into opposed screws.
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patent: 4347054 (1982-08-01), Kraus et al.
patent: 4482318 (1984-11-01), Forster
patent: 4571177 (1986-02-01), Dahan
patent: 5002485 (1991-03-01), Aagesen
patent: 5133659 (1992-07-01), Shilliday
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