Syringe adapted to prevent needle sticks

Details Syringe adapted to prevent needle sticks Syringe adapted to prevent needle sticks

1988-11-22

1991-04-16

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604110, 604220, 604196, A61M 532

Patent

active

050079034

ABSTRACT:
The syringe includes a barrel (12) and first and second piston-like elements (16,18) which are adapted for fluid tight movement therein, wherein the first and second pistons (16,18) are connected by a flexible, thin cord (36). A hollow needle (28) is mounted on and extends from the front surface (24) of the first piston (16). The needle (28) communicates with the space between the first and second pistons (16,18). A plunger (32) is attached to the rear surface (31) of the second piston (18) and extends from the rear of the syringe in conventional fashion. In the forwardmost position of the first piston (16), the needle (28) extends outwardly from the front end of the syringe barrel (12) but in the rearmost position, the needle (28) is within the barrel (12).

REFERENCES:
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patent: 4492576 (1985-01-01), Dragan
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patent: 4713056 (1987-12-01), Butterfield
patent: 4715854 (1987-12-01), Vaillancourt
patent: 4747829 (1988-05-01), Jacob et al.
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patent: 4955869 (1990-09-01), Bin

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