Patent ID: 9636192
Date: 2017-05-02
CPC Classifications: A61C

Claim:
1. An orthodontic appliance comprising: a telescopic assembly comprising at least an end tube with a hollow interior and a telescopic member telescopically disposed within the end tube; a distal connector secured to the end tube, the distal connector comprising a first cup and a first screw comprising a ball movably secured in the first cup; a mesial connector secured to a mesial end of the telescopic assembly, the mesial connector comprising a second cup and a second screw comprising a ball movably secured in the second cup; a first archwire connector having a body with a threaded through-hole threadingly engaged to the first screw of the distal connector, and a first lip extending from the body of the first archwire connector to define a downwardly opening first wire slot between the body of the first archwire connector and the first lip; a second archwire connector having a body with a threaded through-hole threadingly engaged to the second screw of the mesial connector, and a second lip extending from the body of the second archwire connector to define a downwardly opening second wire slot between the body of the second archwire connector and the second lip; and a spring located coaxially within the end tube, the spring configured to impart a biasing force between the end tube and the telescopic member.