| 摘要 |
PROBLEM TO BE SOLVED: To provide a medication delivery pen which can eliminate the need of an interlock mechanism for preventing excessive medication and, at the same time, can completely and surely send out a dosage of medication. SOLUTION: A medication delivery pen has an actuator disposed in the proximal end of a housing for setting and administering a dosage of medication and a medication-containing cartridge assembly has a pierceably sealed distal end, an open proximal end attachable to the distal end of the housing, and a piston slidably engaged in a cartridge in a fluid-tight state. cartridge. A drive mechanism is coupled between the actuator and cartridge to exert an axial force on the piston to inject the set dosage of medication. The actuator triggers the drive mechanism to administer the injection of medication held in the cartridge and a processor is connected to the actuator to determine a value equal to the dosage set by the actuator. |
