| 摘要 |
A new improved blood withdrawal apparatus and method for using same wherein the apparatus includes a test tube housing for receiving a blood sample test tube, a test tube penetration assembly with the test tube housing for penetrating the blood sample test tube, a valve mechanism in flow communication with the test tube penetration assembly and the test tube housing for regulating the flow of blood to the test tube penetration assembly, and a connection assembly with the valve mechanism for connecting the valve mechanism in flow communication with an intravenous catheter positioned in the vein of the subject.
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