Tool and method for removing a parted endodontic file
US4746292A · kind A · utility
Inventor
Key dates
| Filing date | Apr 2, 1987 |
| Grant date | May 24, 1988 |
| Priority date | — |
| Expiry date | Apr 2, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/46
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tool for removing a parted endodontic file from the root canal of a tooth in which a portion of the length of the file is exposed, the tool being in the form of an elongated tubular shaft, the interior diameter of which is slightly greater than the exterior diameter of the file, the tubular shaft having an enlarged handle portion at the proximal end and a vent so that liquid adhesive may be applied to the distal end, the adhesive being drawn by capillary action into the tube adjacent the distal end. The shaft distal end may then be positioned over the exposed portion of a file and retained until the liquid adhesive solidifies. Thereafter, the shaft and parted file may be removed as a unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.