| 摘要 |
According to the present invention, a medical fluid injection method comprises: a step (S100) of inserting a discharge portion of a cartridge mounting portion into a patient; a step (S200) of pushing medical fluid filled in a cartridge by a pusher and injecting the medical fluid to an object; and a step (S300) of retracting the pusher by a predetermined distance in a direction opposite to the pushing direction when a certain amount of the medical fluid is injected. |
