| 摘要 |
IMPROVED BLOOD SAMPLING DEVICE An improved blood sampling device is disclosed which includes a coupling device connected to a needle for receiving blood withdrawn from a patient. The coupling device includes first and second ports in flow communication with the needle and is adapted to conduct blood to either the first or second port. The first port includes an adapter sleeve which is adapted to receive a vacutainer-type blood storage device for storing blood samples taken from the patient. A microporous hydrophobic plug is positioned within the coupling device intermediate the first port and the needle for venting air which is trapped within the coupling device during the initial stages of the sampling operation. The second port is connected to the coupling device intermediate the plug and the needle and is adapted to receive a syringe for temporarily storing a first portion of blood withdrawn from the patient thereby to ensure that blood subsequently delivered to the vacutainer contains gases having relative partial pressures and activities of ionic species substantially equal to those of the patient's in vivo conditions. WD80-3V3 |
