Screw device for orthodontic treatment - Pending Dental Patent Applications

Screw device for orthodontic treatment
United States Patent Application: 20050130093
Kind Code A1
Lin, Cheng-Yi
June 16, 2005
Inventors: Lin, Cheng-Yi; (Banchao, TW)
Correspondence Name and Address: BRUCE H. TROXELL
SUITE 1404
5205 LEESBURG PIKE
FALLS CHURCH
VA
22041
US
Serial No.: 885580
Series Code: 10
Filed: July 8, 2004
Abstract
A screw device for orthodontic treatment comprises a screw-body part, a platform part integrally formed with the screw-body part, and a head part. The head part is detachable from and exposed outside the screw-body part and is operatable to hook a spring (or rubber band) for orthodontic treatment. Since the head part is detachable, various types of head parts can be chosen to attach on the same platform part and screw-body part for performing different orthodontic treatments. Cost to manufacture the screw device is lower, and flexibility and convenience to use the screw device are higher. The threads of the screw-body part are divided into at least a first thread portion located near to the platform part and a second thread portion located away from the platform part. The threads of the first thread portion are designed to have relatively narrower width and smaller pitch, while the threads of the second thread portion have wider width and larger pitch.