Orthodontic appliance
US5829975A · kind A · utility
Inventor
Key dates
| Filing date | Oct 1, 1997 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Oct 1, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C7/36
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A continuous force, replaceable spring appliance which connects to the orthodontic archwires of the upper and lower jaws and teeth. The replaceable spring fits into a hollow telescoping cylinder assembly by unscrewing end caps. The spring can be made to exert a pushing force, pushing the telescoping cylinders apart as it works, or it can exert a pulling force, pulling the ends of the telescoping cylinders together. The telescoping assembly has end caps that have bars with balls attached. The balls fit into a socket assembly that is screw locked to the archwires. The ball and socket assembly allows a free range of motion, and prevents the appliance from pinching the cheeks and gums or being chewed by the teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.