| 摘要 |
<p>A syringe for dispensing a viscous settable material such as dental impression material has a tubular body (1 ) with an internal chamber (4), a plunger (2) movable through an open distal inlet end (5) along the chamber (4), and a nozzle (3) connected to an open proximal outlet end (6) of the chamber. The outlet end (6) is wide relative to the chamber cross- section and the nozzle can be detached to facilitate cleaning after use. The nozzle (3) when detached, may be displaceable from the outlet end (6) to the inlet end (5) to remove residual material due to a close scraping action between a rim (13a) on the nozzle (3) and the interior surface of the chamber (4). The nozzle may also be non-removable so that cleaning can be readily effected due to the relatively wide outlet (6) using a pull-through.</p> |
