There are several kinds of puncture needle in the chest cavity

Pleural cavity puncture. Puncture the pleural cavity with a chest piercing needle. The puncture sites were subscapular 7 ~ 9 intercostal or midaxillary line equivalent to 6 ~ 7 intercostal. After puncturing the pleural cavity, gas can be withdrawn to treat pneumothorax, or inflammatory exudate can be extracted from the pleural cavity, or drugs can be injected to treat pleurisy and relieve symptoms of respiratory distress. The liquid can be extracted for assay and bacterial culture. Diagnostic fluid can be extracted from 50 to 100ml. Pneumothorax caused by trauma should not be more than 600ml for the first time. A continuous closed thoracic drainage can also be done to extract fluid and gas. If the patient shows symptoms of collapse, such as pallor, sweating, palpitation, and local severe pain, stop the drainage immediately and inject 0.3 ~ 0.5ml of 1:1000 adrenal gland, and make the patient lie flat. Pericardium biopsy. The pericardium was punctured outside the boundary of heart voiced sound from the 5th to 6th intercostal line of the left clavicle with a chest piercing needle. Drain the inflammatory fluid and release the pressure on the heart. The first suction should not exceed 300ml. When replacing the needle during operation, clamp the nozzle to avoid air entry. Antibiotics can also be injected into the pericardium for treatment.