Blood extraction device with one-way piston movement

Details Blood extraction device with one-way piston movement Blood extraction device with one-way piston movement

1990-09-25

1992-03-17

Hindenburg, Max

Surgery

Truss

Pad

604220, A61B 500

Patent

active

050959140

ABSTRACT:
A blood extraction device features an extraction cylinder (11) having a forward end for attaching a needle (12) and a rear end having an opening (13) for a piston rod (14) together with a piston (15) secured to the forward end of the piston rod (14) arranged to slide axially in the extraction cylinder (11). The piston (15) can essentially be moved only in the direction away from the forward end of the extraction cylinder (11) and practically incapable of being moved when subjected to a force in the direction of the forward end due to one-way coacting means of prevention (17, 18).

REFERENCES:
patent: 201443 (1878-03-01), Parker
patent: 2369304 (1945-02-01), Lewis
patent: 4246898 (1981-01-01), Travalent et al.
patent: 4333457 (1982-06-01), Marqulies
patent: 4370987 (1983-02-01), Bazell et al.
patent: 4459997 (1984-07-01), Sarstedt
patent: 4642102 (1987-02-01), Ohmori
patent: 4832696 (1989-05-01), Luther et al.
patent: 4840616 (1989-06-01), Banks
patent: 4906231 (1990-03-01), Young
patent: 4978339 (1990-12-01), Labouze et al.

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