| 摘要 |
A blood sample collection assembly operable in a normal mode and convertible to a retraction mode, comprising: a first chamber (302) forming a hollow nozzle (306) located at the distal end of said first chamber and opening into the interior of said first chamber; a vacuum tube chamber (304) connected to said first chamber (302) and positioned substantially orthogonal to said first chamber, said vacuum tube chamber having an open end for receiving a vacuum tube (340); a needle carrier (308) carrying a first hollow needle (310) on the distel end thereof and carrying a second hollow needle (312) substantially orthogonal to said first hollow needle, said second hollow needle being in fluid communication with said first hollow needle, said second hollow needle extending into said vacuum chamber (304), said needle carrier being slidably mounted in said first chamber (302), said needle carrier being detachably engaged to said first chamber with the distal portion of said needle carrier being disposed within said nozzle (306) of said first chamber during the normal mode; and retraction means (324,326) for disengaging said needle carrier (308) from said first chamber (302) to switch the assembly from the normal mode to the retraction mode and for retracting said needle carrier into the first chamber such that said first needle (310) is concealed within said first chamber. <IMAGE> |
