| abstract |
The invention concerns a base part for a medication delivery device. The base part is during use fastened to a patient's skin and connected to a cannula part which cannula part is positioned at least partly subcutaneous. The base part is also connected to a sensor unit which can detect one or more components e.g. glucose content in the patients blood. The base part comprises fastening means ( 15 ) which fastening means ( 15 ) releasably attach the reservoir/delivery part to the base part during use and a first fluid path or means corresponding to a first fluid path from a reservoir permitting a flow of fluid between the reservoir/delivery part and the base part when the reservoir/delivery part is attached to the base part, the first fluid path comprises means ( 17 ) for interrupting the fluid flow when the detachable reservoir/delivery part is not attached to the base part ( 1 ) and opening the fluid path ( 19 ) when the delivery part is attached to the base part ( 1 ). The base part ( 1 ) also comprises a lower mounting surface ( 2 ) and one or more openings ( 12 A, 12 C) through which two or more subcutaneous units ( 7,70 ) in the form of at least one cannula and at least one sensor part or at least two cannulas extend and it comprises a second fluid path permitting a flow of fluid from the outlet of the first fluid path to an inlet of a subcutaneously positioned cannula ( 22, 22 a, 22 b ) during use, and a signal path is provided from the reservoir/delivery part to a sensor contact part. The base part is characterized in that the second fluid path is in fluid connection with an end opening of a subcutaneously positioned cannula during use. |