Syringe delivery system for dispensing a dental composite or other highly viscous material
US7261559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Oct 1, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3121
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A syringe delivery system for dispensing a highly viscous material through a syringe delivery opening. The system includes a syringe barrel having a delivery opening, a plunger including a threaded shaft that threadably engages the syringe barrel for selectively dispensing a viscous material through the delivery opening, and a plunger gripping member in gripping communication with the plunger that includes means for sealing the threaded shaft of the plunger so as to prevent contamination by foreign matter. According to one embodiment, a sheath may be included that covers the threaded shaft of the plunger so as to hide the plunger beneath the sheath. The sheath provides a sealed environment for the threaded shaft so as to prevent entrance or contamination by foreign matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.