Deformable slidable piston to provide self-aspiration in hypoder

Details Deformable slidable piston to provide self-aspiration in hypoder Deformable slidable piston to provide self-aspiration in hypoder

1981-07-16

1983-05-03

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604232, 604244, 604900, A61M 500

Patent

active

043817793

ABSTRACT:
The slidable piston closing the upper end of cartridge ampoules of the type used in hypodermic syringes is provided with a deformable section which, on forward and backward flexing, generates self-aspiration in the ampoule.

REFERENCES:
patent: 2526365 (1950-10-01), Jorgensen
patent: 3224445 (1965-12-01), Melott
patent: 3295525 (1967-01-01), Evers et al.
patent: 3340872 (1967-09-01), Cox
patent: 3583399 (1971-06-01), Ritsky
patent: 3656482 (1972-04-01), Sunnen
patent: 3662753 (1972-05-01), Tassell
patent: 3828778 (1974-08-01), Weinhart

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