1. A suture technique evaluation apparatus that evaluates a suture technique performed on a simulated body simulating a part of a human body and including a plurality of layers, the suture technique evaluation apparatus comprising: a pressurizing mechanism that pressurizes at least a suture region of the simulated body with gas, the pressurizing mechanism including: a pressurizing source, and a pressurizing chamber that is communicatively connected to the pressurizing source and has an attachment port to be attached with the simulated body; a pressure sensor that is provided so as to measure a pressure inside the pressurizing chamber; and a control mechanism including a processor configured to: evaluate a value related to a leak pressure from the suture region on a basis of the pressure measured with the pressure sensor, evaluate a user input indicating a number of suture threads that penetrate through all the layers compared to a user input indicating a number of stitches actually made, and output a comprehensive evaluation result of the suture technique on a basis of a result of the evaluation of the leak pressure and a result of the evaluation of the user input indicating the number of suture threads that penetrate through all the layers compared to the user input indicating the number of stitches actually made.