Trap in barrel one handed retracted blood sampling device

Details Trap in barrel one handed retracted blood sampling device Trap in barrel one handed retracted blood sampling device

1990-08-17

1992-06-30

Yasko, John D.

Surgery

Truss

Pad

604195, A61B 500

Patent

active

051254140

ABSTRACT:
A disposable blood sampling device having a needle cannula fixed to a slidable piston. The slidable piston assembly is held within the elongated hollow barrel of said blood sampling device by a compressed spring and a latch means. When said latch means is disengaged with said slidable piston and said needle cannula and said slidable piston is thrust into said elongated hollow barrel of said blood sampling device and holds said needle cannula fixed to said slidable piston within said elongated hollow barrel and is further prevented from being pushed out of said elongated hollow barrel by a rim in said elongated hollow barrel thus preventing any accidental injection of bacteria, virus or other undesirable material into others. The disengagement of said latch means with said piston assembly is accomplished with only one and the same hand that is used to inject the needle cannula into a body or into a vein inside of said body.

REFERENCES:
patent: 4747831 (1988-05-01), Kulli
patent: 4813940 (1989-03-01), Parry
patent: 4834718 (1989-05-01), McDonald

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