Kinkless infusion set for medical use

An infusion set, comprising:

• a base constructed to be attached to a patient's skin;
• a body storing a curved or helical cannula;
• a control knob that is operably connected the curved or helical cannula;
• a rack that engages a first gear that is directly connected to the control knob, and where a second gear that is directly connected to the curved or helical cannula engages the rack;
• and
• wherein the control knob is engageable by the patient to simultaneously rotate the curved or helical cannula and move the curved or helical cannula from the body to the skin such that the cannula is substantially kink free as it rotates under the patient's skin.

An infusion set, comprising:

• a base constructed to be attached to a patient's skin;
• a body storing a curved or helical cannula;
• a control knob that is operably connected the curved or helical cannula;
• variable gearing constructed so that a constant motion applied to the control knob causes the curved or helical cannula to move and rotate more slowly as the patient continues to move the control knob and
• wherein the control knob is engageable by the patient to simultaneously rotate the curved or helical cannula and move the curved or helical cannula from the body to the skin such that the cannula is substantially kink free as it rotates under the patient's skin.