Multi-piston syringe device

Details Multi-piston syringe device Multi-piston syringe device

1975-06-04

1976-10-12

Yasko, John D.

Surgery

Truss

Perineal

128218M, 128218P, A61B 500

Patent

active

039851222

ABSTRACT:
A syringe device having smaller and larger, coaxially aligned cylinder bores each provided with respective pistons. The larger rearmost piston is in slidable sealing engagement with its bore but is free-floating on the syringe plunger shaft so that as the forward piston is withdrawn the plunger shaft slips centrally through the rear piston. Thus, fluid drawn in by the forward piston is ultimately mixed with any contents of the large cylinder or bore associated with the larger piston. The rearward piston is free to adjust its disposition on the plunger shaft in response to positive fluid pressure existing forwardly thereof. At a predetermined point in the rearward travel of the plunger, during withdrawal strokes, the pistons are linked together by provided structure for enabling simultaneous, corresponding forward travel to eject the combined substances from the over-all syringe construction. The structure also admits of anerobic culture usage and, further, permits the subsequent selected mixing of independent chemical solutions which are pre-filled in the syringe. Many uses, advantages and design advances are present herein, which will be hereinafter discussed in detail.

REFERENCES:
patent: 3016896 (1962-01-01), Van Sickle
patent: 3477431 (1969-11-01), Walecka
patent: 3511239 (1970-05-01), Tuschnoff
patent: 3749084 (1973-07-01), Cucchiara
patent: 3766917 (1973-10-01), Wimmer
patent: 3881484 (1975-05-01), Gidcumb, Jr.

Affiliated with

Also associated with

Rating

Multi-piston syringe device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-piston syringe device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-piston syringe device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-936085