| 摘要 |
A counting device is disclosed for collecting a predetermined number of microspheres of a drug from a canister. The device has a head to be placed in use above the microspheres canister. The head comprises a plurality of flow channels each selectively connectable to a low pressure source by means of a valve and being connected to a predetermined number of ports, each port being operative to collect a single microsphere of the drug from the canister when the associated channel is connected to the low pressure source. Figure 3 |
