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

Claim 1:
2. The medical liquid injection device of claim 1, wherein the control module is further configured to:
determine that a current contact pattern for the encoder unit is the first contact pattern or the second contact pattern based on the detection of the rotation of the driving unit by the encoder unit;
calculate a number of confirmations by checking whether the current contact pattern is maintained as the first contact pattern or the second contact pattern;
store the number of confirmations of the contact pattern before the change in a buffer, in response to the change of the current contact pattern from the first contact pattern to the second contact pattern or from the second contact pattern to the first contact pattern;
accumulate and store the number of confirmations of the contact pattern before changing in the buffer until the number of changes of the contact pattern becomes equal to or greater than a preset number; and
determine the over-injection or under-injection of the medical liquid based on the accumulated number of confirmations stored in the buffer in response to the number of changes of the contact pattern being equal to or greater than the preset number.