The medical puncturing device (10) includes a housing (12) having a proximal end (18) and a distal end (16) and a skin puncturing assembly (14) within the housing. The skin puncturing assembly includes a movable carrier (50) and a skin puncturing element (52). The skin puncturing element is adapted to puncture the skin of a patient. The carrier is movable from a retracted position wherein a distal tip of the skin puncturing element is disposed within the housing and to a puncturing position wherein the distal tip is exposed to puncture the skin of the patient. The carrier is moved from the retracted position to the puncturing position upon radial deformation of the housing. An internal guide (42) may be provided within the housing for guiding the movement of the carrier from the retracted position to the puncturing position.
