| 主权项 |
1. A dosing unit for an ambulatory infusion system, the ambulatory infusion system designed for the infusion of a liquid drug into a patient's body over an extended time period, the dosing unit comprising:
an inlet port; an outlet port, the outlet port being configured to couple to the patient's body; and a pump kernel, the pump kernel comprising a kernel body, the kernel body forming a limiting surface of a stepwise or continuously variable dosing volume; a control valve, the control valve being configured to couple the variable dosing volume alternatively, in a filling state, to the inlet port for filling or refilling the dosing unit by increasing the dosing volume, or, in a infusing state, to the outlet port for dosing liquid drug out off the dosing unit by decreasing the dosing volume; wherein the inlet port is configured for being repeatedly manually attached to and detached from an external liquid drug container, thus enabling a repeated sequence of attaching the external liquid drug container to the inlet port, filling the dosing unit with the control valve being in the filling state, detaching the liquid drug container from the inlet port and infusing drug from the dosing unit with the control valve being in the infusing state. |
