Syringes

Details Syringes Syringes

1974-05-23

1977-01-25

Knowles, Allen N.

Dispensing

With discharge assistant

Container with follower

128218C, B67D 108

Patent

active

040047180

ABSTRACT:
A syringe, especially for measuring microliter amounts, which comprises a barrel having over at least a part of its length an inner liner composed of a resilient plastics material surrounding a bore and a piston slidable within the liner bore, the maximum cross-sectional area of the piston being slightly greater than the cross-sectional area of the undeformed bore. The liner is preferably made of a polytetrafluoroethylene and the piston comprises a wire with a bead at one end. A method of attaching a needle to the syringe is also disclosed.

REFERENCES:
patent: 2855927 (1958-10-01), Henderson
patent: 3101084 (1963-08-01), Hamilton
patent: 3393930 (1968-07-01), Ziherl et al.
patent: 3521795 (1970-07-01), Langhjelm et al.
patent: 3606086 (1971-09-01), Drummond et al.

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