Non-contaminating renewable syringe

Details Non-contaminating renewable syringe Non-contaminating renewable syringe

1988-01-13

1989-04-11

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604230, 92248, A61M 5315

Patent

active

048202789

ABSTRACT:
A syringe which has a barrel, an annular elongate liner that is constrained by the barrel and a plunger head. The liner and the plunger head are made of a fluorinated polymer material, such as Teflon. The plunger head has first and second sealing surfaces and a portion of reduced diameter between them. The first sealing surface provides a fluid seal whereby fluid is drawn into and forced out of the syringe. The second sealing surface forms a particle trap with the inner bore of the liner to keep any fluorinated polymer particles from escaping from the portion of reduced diameter between the first and second sealing surfaces.

REFERENCES:
patent: 2607342 (1952-08-01), Abel
patent: 2735735 (1956-02-01), Abel
patent: 2812763 (1957-11-01), Ferguson
patent: 2856923 (1958-10-01), Roger et al.
patent: 3811441 (1974-05-01), Sarnoff
patent: 3884229 (1975-05-01), Raines et al.
patent: 3895633 (1975-07-01), Bartner et al.
patent: 3941131 (1976-03-01), Ogle
patent: 4074715 (1978-02-01), Geiger
patent: 4089335 (1978-05-01), Harris
patent: 4500310 (1985-02-01), Christinger
patent: 4501192 (1985-02-01), Knodel

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