| 摘要 |
DISPOSABLE BLOOD SAMPLING CARTRIDGE A blood sampling device having a housing, a needle unit attached to the housing for withdrawing blood from the patient into a blood reservoir in the housing, a piston unit disposed in the house for pumping the blood from the blood reservoir into a flow cell and a plurality of ampules containing analyzing fluids disposed in the housing for flushing the fluid through the analyzer during the analyzing procedure. The housing includes a front portion and a rear portion which are rotatably disposed with respect to one another, the rear face of the front portion mating with the front face of the rear portion. The front portion has a blood reservoir, a vent inlet and outlet ports and a waste chamber. The rear portion includes a groove in the front face thereof which , depending on the angular orientation of the rear portion with respect to the front portion, connects the blood reservoir to either the vent line or the outlet port. Additionally, the rear portion has a plurality of ampule receiving bores for storing the ampules. Correspondingly, the rear portion includes a plurality of fluid ports for respectively communicating the openings of ampules to the outer port depending on the angular position of the rear housing portion with respect to the front housing portion. |
