Blood taking device

Details Blood taking device Blood taking device

1975-07-24

1976-12-14

Yasko, John D.

Surgery

Truss

Perineal

128DIG5, 128221, A61B 514

Patent

active

039969231

ABSTRACT:
An improved blood-taking device of the type wherein a hypodermic needle is inserted into a blood vessel and one or more evacuated containers in succession are connected to the needle for collecting blood samples has two valves therein. The first valve closes the proximal end of the needle section when a container is not connected thereto, and the second valve makes it possible to control the difference of pressure utilized for drawing blood from a subject. The second valve can be closed rapidly in the event it is discovered that the needle lies in tissue exterior to a blood vessel rather than in a blood vessel itself, thereby preventing extravasation and hematoma.

REFERENCES:
patent: 3143109 (1964-08-01), Gewertz
patent: 3181529 (1965-05-01), Wilburn
patent: 3416567 (1968-12-01), Von Dardel et al.
patent: 3460529 (1969-08-01), Leucci
patent: 3513829 (1970-05-01), Deuschle et al.
patent: 3585996 (1971-06-01), Reynolds et al.
patent: 3753432 (1973-08-01), Guerra
patent: 3906930 (1975-09-01), Guerra

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