| 摘要 |
PROBLEM TO BE SOLVED: To prevent accidental pricking into a thumb by arranging an injection needle shield to rotate in the direction of separating from an injection needle cannula when a pressing force of a finger is applied to an actuator. SOLUTION: A shield actuator 60 which comprises opposed base end parts 62, a final end part 64 and a trigger 66 between both the end parts 62 and 64 is provided at a point away from the position of a shield support part 44. The final end part 64 is inclined to the trigger 66 and sticks out to the injection needle cannula 32 while being so formed in a shape of U preferably as to let the injection needle cannula 32 approach between the final end part and the trigger. The trigger 66 of the actuator 60 thus arranged is pressed with a finger and the rim part 92 of the injection needle shield 74 is done by the final end part 64, which allows the injection needle shield 74 to be moved to a preparation-application position. After use, the wall 82 of the base end part of the injection needle shield 74 is pushed to cover the injection needle cannula 32 thereby enabling holding of the injection needle separately from the finger. |
