Unit dose low viscosity material dispensing system

Abstract

An ampule having a body portion and a sealed end portion and a sealed delivery portion adapted for use in a delivery syringe system for controllably dispensing a low viscosity material, such as a liquid, gel, or paste. An ampule having sealed rear portions adapted to mate with a plunger of a syringe so as to facilitate controlled dispensing of a low viscosity material. The syringe has a plunger adapted to grasp the collapsed ampule, facilitating removal, as well as breach openings positioned to provide controlled initial flow of the dispensed low viscosity material. In one embodiment, a barrel having different internal diameters is used to improve dispensing of material within an ampule. Low viscosity materials such as liquids and gels are controllably dispensed in a measured unit dose quantity. The present invention has many applications, but is particularly applicable to dispensing low viscosity materials such as used in coatings and not injected parenterally, and is particularly applicable to dental applications.

Dependencies are inferred from the claim text.