Drug dosing control device that allows immediate feedback while using the dose dial

摘要

The drug injection control device according to the present invention includes: an injection amount setting module 100 configured to store a torsion moment in the torsion spring 140 disposed in the housing 10 to set the amount of the drug to be injected; and a drug dispensing module 200 for discharging from the cartridge built into the cartridge holder 30 to the outside by moving through the release of the torsional moment applied to the torsion spring 140; including, the housing 10 and A torsion spring 140 having both ends coupled to the ratchet tube 120 and an anchor 170 slidably coupled to the inside of the housing 10 in a state rotatably coupled to the ratchet tube 120 In a state including, the anchor 170 includes an anchor circumferential protrusion 171 protruding along the circumferential direction on the inner surface and a housing coupling protrusion 172 formed along the axial direction on the outer circumferential surface, the anchor 170 is Anchor circumferential protrusion 171 protruded along the circumferential direction on the inner surface, tube rotation preventing protrusion 173 formed to be stepped in the axial direction on the inner surface, and housing coupling protrusions 172 and 174 formed along the axial direction on the outer circumferential surface Including, the tube rotation prevention protrusion 173 is coupled to the rotation prevention sphere 124 constituting the ratchet tube 120, one-way rotation of the ratchet tube 120 rotatably coupled to the anchor 170 makes only possible