| 摘要 |
A blood sampling device is provided for mounting on a patient's forearm or other suitable body location, which incorporates an admixture reservoir (42) and a closed blood sampling cavity (22) in a single housing (12), the functional elements of which are firmly mounted and easily accessible to the caregiver. The blood sampling cavity (22) is preferably accessed by a blunt cannula (14), which is readily retained in the sampling cavity (22) by virtue of the cavity's secured position and elevated location on the sampling device housing during the sampling procedure, without the need for a cannula locking device. The sampling device of the present invention incorporates an admixture reservoir (42) having a rotary actuator (46), through which the internal fluid volume of the admixture reservoir (42) is manipulated from nil to a volume which is sufficient to remove all admixture from the blood sampling cavity (22) during a sampling procedure, thus insuring that a clean blood sample may be withdrawn by an aspiration device attached to a sterile blunt cannula (14) which penetrates a split septum (24) of the blood sampling cavity (22). |
