Endodontic instruments and methods of manufacturing thereof
US10351934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2014 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Aug 17, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C2201/007
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing a nonlinear superelastic file comprising the steps of: providing a superelastic file having a shaft and a file axis; providing a fixture including a file groove being defined by one or more displacement members, the file groove configured for receiving the shaft; inserting at least a portion of the shaft into the fixture along the file groove, the portion of the shaft including a first portion of the shaft; contacting the first portion of the shaft with a first displacement member of the one or more displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft; heating the portion of the shaft while inserted in the fixture to a temperature of at least about 300° C. for a time period of at least about 1 minute to shape-set the portion of the shaft thereby forming a shape-set nonlinear file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.