Blood sampling device for obtaining dual samples of venous blood

Details Blood sampling device for obtaining dual samples of venous blood Blood sampling device for obtaining dual samples of venous blood

1986-08-04

1987-11-03

Kamm, William E.

Surgery

Truss

Pad

128770, 604403, A61B 500

Patent

active

047037628

ABSTRACT:
This device is adapted for taking venous blood samples without the aid of any auxiliary negative pressure. Venous blood pressure is the sole force which fills the device with the blood sample. The device includes a flexible plastic tube formed from polyethylene or the like and further includes a blood drawing needle mounted on one end of the tube. A valved closure is disposed at the other end of the tube, the valve being operable to allow passage of air from the tube when the sample is drawn. The valve does not, however, allow the passage of blood from the tube. The tubes may be connected in tandem so as to allow the drawing of two samples with one venipuncture. The first tube can be devoid of an anti-coagulant coating while the second tube can include an anticoagulant coating. In this way, one drawn sample will be anti-coagulated and the other will not.

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