Method for collecting blood samples

Details Method for collecting blood samples Method for collecting blood samples

1975-05-12

1976-03-16

Yasko, John D.

Surgery

Truss

Perineal

128DIG5, A61B 500

Patent

active

039439178

ABSTRACT:
The invention relates to a method for collecting a blood sample from a blood vessel, such as an artery, by means of a syringe, preferably of the type having a piston displaceably mounted within a cylinder which is provided with a hollow needle. Before the needle is inserted in the blood vessel from which the blood sample is to be collected the piston is displaced to a retracted position, and the cylinder space defined by the piston is vented to the atmosphere. The invention also relates to a blood sampling syringe having means for venting the cylinder space to the atmosphere in a retracted position of the syringe piston.

REFERENCES:
patent: 1272742 (1918-07-01), Weguelin et al.
patent: 1526595 (1925-02-01), Gillman
patent: 1557837 (1925-10-01), Hein
patent: 1643531 (1927-09-01), Wolf
patent: 1881415 (1932-10-01), Tingleff
patent: 2111985 (1938-03-01), Meyer
patent: 3016896 (1962-01-01), Van Sickle
patent: 3076456 (1963-02-01), Hunt, Sr.
patent: 3433216 (1969-03-01), Mattson
patent: 3623475 (1971-11-01), Sanz et al.

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