Syringe assembly with contained pop-out elastic plug seal

Details Syringe assembly with contained pop-out elastic plug seal Syringe assembly with contained pop-out elastic plug seal

1974-03-18

1976-07-06

Tollberg, Stanley H.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With common discharge

128218M, 222386, B65D 3700

Patent

active

039677591

ABSTRACT:
A prefillable or prefilled syringe having a liquid-containment glass tube body section with thermoplastic resin finger-grip sleeve and noseforming sleeve fit thereon in an interference fit, and with the ends of the glass tube being sealed after filling and preferably prior to assembly of one or both the finger-grip sleeve and the nose-forming sleeve, and a method of assembly thereof, the finger-grip sleeve and the nose-forming sleeve being cam-stretched onto and frictionally retained on and along a glass tube, in the form of a section of die-formed glass tubing. Increase in latitude of operable interference fit and stretch is effected by assembling the finger-grip sleeve and the noseforming sleeve in a heated condition, without requiring heating of the glass tube and its prefilled contents. A preferred embodiment utilizes a pop-out valve plug seal in the nose end of the glass tube, with a plunger piston at the opposite end, for sealed prefilled containment of a liquid drug or other chemical agent in the glass tube.

REFERENCES:
patent: 2607341 (1952-08-01), Brown
patent: 3110309 (1963-11-01), Higgins
patent: 3345986 (1967-10-01), Roberts et al.
patent: 3366286 (1968-01-01), Kloehn
patent: 3417904 (1968-12-01), McLay

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