Syringe for withdrawing blood

Details Syringe for withdrawing blood Syringe for withdrawing blood

1988-04-11

1989-03-21

Coven, Edward M.

Surgery

Truss

Pad

128766, 604231, A61B 514

Patent

active

048134333

ABSTRACT:
A syringe for withdrawing fluids which consists of novel new one-handed operated syringe. Said one-handed or therapeutic syringe is described as a therapeutic syringe comprising a double compartmented housing, a piston disposed in one of said compartments, a piston rod connected to said piston controlling the movement of said piston in a barrel, vent means associated with said piston compartment, said other non-piston compartment being formed with needle hub for supporting a needle and having an opening in fluid communication with said piston compartment whereby when said piston is moved forward in said barrel in said piston compartment, air will be discharged therefrom while drawing liquid into said other compartment.

REFERENCES:
patent: 1704678 (1929-03-01), Brown
patent: 4257426 (1981-03-01), Bailey

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