DRIVE MECHANISM FOR A NEEDLE INSERTION ARRANGEMENT

摘要

The invention relates to a drive mechanism (9) for a needle insertion arrangement (1), the drive mechanism (9) comprising a rotatable wheel (10) with a notch (12) having a closed curve geometry comprising a curved section (12.1) and a linear section (12.2), wherein at least one cross beam (15, 16) is movably arranged and engageable to an injection needle (2) to move it between a retracted position (RP) and an extended position (EP), wherein the cross beam (15, 6) comprises a cam (15.1, 16.1) adapted to engage the notch (12).