ADAPTERS, TIPS, AND DENTAL ASSEMBLIES

摘要

An adapter for coupling a compule with a dental handpiece including a piston. The compule contains a dental material. The adapter includes a coupling portion that defines openings for attaching the adapter to the compule and for attaching the adapter to the dental handpiece. A plunger portion extends through one opening and engages the piston. A breakable tab connects the coupling portion and the plunger portion and breaks during dispensing of the material. The plunger portion is then movable relative to the coupling portion. A tip for use with the dental handpiece includes a housing that defines a chamber. A needle extends from the housing and defines a lumen having an opening from which the dental material is dispensed. A plunger slides within the chamber to push the dental material through the lumen and includes a rib that seals the plunger against the chamber during sliding movement of the plunger.

主权项

1. An adapter for coupling a compule, which contains a dental material, with a dental handpiece including a piston, comprising:
a coupling portion including a sidewall defining a first opening for attaching the adapter to the compule and a second opening for attaching the adapter to the dental handpiece; a plunger portion extending through the second opening of the coupling portion, the plunger portion engaging the piston during dispensing of the dental material; and a breakable tab connecting the coupling portion and the plunger portion, the breakable tab being configured to break at a minimum predetermined load during dispensing of the dental material, wherein when the breakable tab breaks, the plunger portion is movable relative to the coupling portion.