Fig. 2

Transthoracic intercostal nerve block and percutaneous intercostal nerve block. a disposable intravenous infusion needle; b transthoracic intercostal nerve block sketch map, black line indicates posterior median line, yellow line indicates connecting line at 2 cm outside the sympathetic chain; c thoracoscopic view, yellow line indicates connecting line at 2 cm outside the sympathetic chain; d disposable anesthesia needle; e percutaneous intercostal nerve block sketch map, black line indicates posterior median line, red line indicates parallel line at 2.5 cm outside the posterior median line, yellow line indicates parallel line at 5 cm outside the posterior median line; f thoracoscopic view