Patent ID: 11918784
Assignee: EOFLOW CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 3:
4. The medical liquid injection device of claim 1, wherein the encoder unit comprises:
a base cover mounted on the end of the driving unit and rotating together with the driving unit;
a first contact end connected to contact one side of the base cover; and
a second contact end disposed on the other side of the base cover and selectively contacting the base cover according to rotation of the driving unit,
wherein the current contact pattern for the encoder unit is determined as the first contact pattern when the second contact end contacts the base cover by rotation of the driving unit, and the current contact pattern for the encoder unit is determined as the second contact pattern when the second contact end is released from the contact with the base cover by rotation of the driving unit.