Cell detaching apparatus and cell detaching method

A cell detaching apparatus for detaching cells placed on a base material floating on an acoustic matching liquid, from the base material, the cell detaching apparatus comprising:

• a holding unit configured to hold the acoustic matching liquid;
• a detaching unit configured to detach the cells from the base material by applying an ultrasonic vibration to the cells through the acoustic matching liquid;
• a control unit configured to perform control to maintain a constant height of a fluid level of the acoustic matching liquid held by the holding unit with respect to the base material during application of the ultrasonic vibration;
• and
• a storage tub configured to store the acoustic matching liquid separately from the holding unit, wherein the acoustic matching liquid is flowably connected with the storage tub via a fluid path, and the storage tub including a sinking member is configured to control the height of the fluid level of the acoustic matching liquid.