US Patent 7850652 Insertion head for medical or pharmaceutical applications

An insertion head for medical use, including a housing formed by two housing parts, a puncture needle and a flexible cannula supported by the puncture needle, wherein before use the puncture needle and cannula are arranged in a protected position inside the housing and can be deployed by gripping the housing parts and moving at least one of the parts relative to the other, wherein upon deployment the puncture needle and cannula can be inserted into the body of a patient, and wherein after insertion the puncture needle can be removed from the cannula by moving the housing and puncture needle away from the body counter to the direction of insertion, the puncture needle being automatically pivoted into a protected position in the housing.