Dispensing syringe having multiple barrels for discharging a dental composition
US8052421B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2009 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Oct 7, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/0133
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A dispensing syringe for dispensing a multi-component dental composition, preferably a two component composition, is provided. The syringe includes a syringe body with multiple elongated barrels for storing the components of the composition; a threaded plunger rod assembly; and a rotatable, threaded connector knob. Preferably, the syringe body has a double-barrel structure and the plunger rod assembly includes two plunger rods that slide within the barrels. The threaded knob has a through-bore with a continuous internal thread for engaging the outer threads of the first and second plunger rods. A dental practitioner manually rotates the knob to displace the first and second plunger rods and discharge the components. The dispensing syringe may further include a dispensing tip containing a static mixing element for mixing the components and dispensing the mixed composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.