Precision syringe-filling mechanism

Details Precision syringe-filling mechanism Precision syringe-filling mechanism

1991-08-07

1993-06-22

Rosenbaum, C. Fred

Fluent material handling, with receiver or receiver coacting mea

Filling or refilling of dispensers

By operation of means causing or controlling dispensing

141384, 604 90, 604210, 604211, 604416, 128919, B65B 104, A61M 500

Patent

active

052209482

ABSTRACT:
A dosing assembly (80) is used to controllably fill a syringe (4), held within a syringe holder (50), from a vial (2) of the type including a piston (18) mounted within a container (14). The syringe holder (50) is threadably mounted (52, 36) to the vial with the needle cannula (72) piercing the piston to permit the syringe holder to be driven against the piston in a controlled manner to accurately meter the pharmaceutical introduced into the syringe. The dosing assembly includes a rotary drive (82, 88, 110, 118, 126) which rotates the syringe holder about the syringe holder axis, thus driving the syringe against the piston, as the syringe holder and syringe therewith are rotated about an axis situated 90.degree. from the syringe axis. This causes the pharmaceutical within the vial to be forced through the needle cannula and into the syringe; the amount of the dose in the syringe depends upon how far the user rotates the syringe holder using the rotary drive.

REFERENCES:
patent: 3833030 (1974-09-01), Waldbauer, Jr. et al.
patent: 3844318 (1974-10-01), Raia et al.
patent: 3875979 (1975-04-01), Hults
patent: 3907009 (1975-09-01), Dobbins
patent: 4219055 (1980-08-01), Wright
patent: 4252159 (1981-02-01), Maki
patent: 4357971 (1982-11-01), Friedman
patent: 4668220 (1967-05-01), Hawrylenko
patent: 4778454 (1988-10-01), La Dow

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