Patent ID: 6722879
Filing Date: 2004-04-20
Classification: A61C

Abstract:
A screw device for orthodontic treatment to be used with a spring comprising:a) a screw-body part having a diameter with external threads extending along a length; b) a platform part axially aligned with the screw-body part, the platform part having: i) a flat bottom plane adjacent to one end of the screw-body part and perpendicular to the screw-body part; ii) a flat top plane perpendicular to the screw-body part; iii) a plurality of side faces extending between the flat top and bottom planes and forming a polygon shaped outer periphery, the outer periphery bounding a platform part width in a lateral direction; and iv) a binding area formed on one of the plurality of side faces for adjoining an orthodontic component; and c) a head part having a neck with a uniform width, axially aligned with the screw-body part and extending outwardly from the top plane of the platform part at a first end thereof, the neck being configured to removably hook one end of the spring, thickness of the platform part determining the distance between the spring and the bottom plane of the platform part; wherein the platform part width is larger than the width of the neck, and larger than the diameter of the screw-body part.