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US 5,509,906 AGranted
Plungerless syringe
AssigneeHealthStar Pharmaceutical Services, Inc.
InventorRichard Q. Poynter
Life of this patent
Estimating the term…
Abstract
A plungerless syringe which comprises a collapsible body having a sealed dispensing tip at one end and an actuating tab at the other end. The collapsible body is characterized by a plurality of rings concentrically arrayed on the surface of the body wall. When the actuating tab is depressed the body commences to collapse and a first ring is received within and frictionally engages a second succeeding ring and remains secured thereto.
Claims3
A plungerless syringe which comprises:
- a collapsible body having a wall containing fluid to be dispensed, a sealed dispensing tip secured to the body, means secured to the body to apply pressure to the body and means to control the collapse of the body which means comprises a plurality of rings, the rings concentrically arrayed on the surface of the body wall, a first ring adapted to be received within and frictionally secured to a second succeeding ring when the body is collapsed and to remain releasably secured thereto.
Dependencies are inferred from the claim text.