No stick syringe

Details No stick syringe No stick syringe

1992-06-15

1993-09-07

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604218, 604241, A61M 532

Patent

active

052424197

ABSTRACT:
A no stick syringe is formed of a barrel having internal right hand threads at each end, a plunger which supports a piston near one end, and a tapered distal end provided with a left hand thread, and a needle having a cap with an internal left hand threaded and a flange configured to engage the internal threads of the barrel. The needle is connected to the tapered end of the plunger and the needle and plunger are threaded through the top internal threads of the barrel by rotating the plunger in the counterclockwise direction. At the base of the barrel the plunger is rotated clockwise to engage a needle flange with the bottom internal threads in the barrel to form a tight seal with a barrel opening and to subsequently disengage the plunger from the needle. After the syringe is used, the plunger is reconnected with the needle and released from the bottom internal by counterclockwise rotation of the plunger. The plunger is then retracted to the top of the barrel and rotated clockwise to connect the flange with the upper internal thread until stopped by internal projections, and thereafter the plunger is disconnected from the needle, whereby the syringe may be safely disposed of.

REFERENCES:
patent: 4026287 (1977-05-01), Haller
patent: 4675005 (1987-06-01), DeLuccia
patent: 4747830 (1988-05-01), Gloyer et al.
patent: 4919652 (1990-04-01), Alter et al.
patent: 4978340 (1990-12-01), Terrill et al.
patent: 4986813 (1991-01-01), Blake, III et al.
patent: 4995874 (1991-02-01), Strickland
patent: 5059179 (1991-10-01), Quatrochi et al.
patent: 5112318 (1992-05-01), Novacek et al.

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