Compound introduction apparatus and compound introduction method

A compound introduction apparatus for introducing a compound into a cell, comprising:

• a processing chamber;
• an introduction unit configured to introduce the compound into the cell inside the processing chamber;
• a supply flow channel for supplying a cell suspension containing the cell and the compound to the processing chamber;
• a discharge flow channel for discharging the cell suspension from the processing chamber;
• a backflow preventing unit configured to prevent backflow of the cell suspension from the processing chamber into the supply flow channel;
• and
• a pressurization unit configured to pressurize the discharge flow channel,
• wherein the backflow preventing unit, the introduction unit, and the pressurization unit are arranged in this order from a supply side of the cell suspension,
• wherein the introduction unit has a first energy generation element that generates energy,
• wherein the backflow preventing unit has at least one selected from the group consisting of a second energy generation element that generates energy, a liquid feed mechanism that supplies the cell suspension, and a check valve, and
• wherein the pressurization unit has a third energy generation element that generates energy.