After the lung resection-related operations are completed, the chest cavity is properly hemostatic, and the incision protective cover of the relevant operation hole is removed. If there is bleeding in the incision, use electrocoagulation to fully stop the bleeding. After hemostasis is completed, use a ligature suture guide to clamp a 1-0 PDS absorbable suture and insert it into the upper intercostal space on the head side of the main operation port. In the secondary operation space, use a double-jointed separation forceps to grasp the suture in the chest cavity and then detach the suture from the ligature suture guide. At this time, insert the ligature suture guide into the lower intercostal space on the foot side of the main operation port. The suture is clamped by the separation forceps in the chest cavity and then pulled out of the chest cavity after being clamped by the claws of the ligature suture guide. In this way, continuous sutures are performed in sequence for a total of 5 s

After the lung resection operation is completed, the chest cavity is properly hemostatic, and the incision protective cover of the relevant operation hole is removed. If there is bleeding in the incision, electrocoagulation is used to fully stop the bleeding. After the hemostasis is completed, the chest wall muscle group and subcutaneous tissue layer are sutured once with a double-needle barbed suture made of 2-gauge PDO material. Finally, the skin is sutured with ordinary silk thread interrupted sutures or absorbable sutures are used to continuously suture the skin intradermally to complete the chest closure.

止血完成后使用结扎缝合引线器夹持1-0规格的PDS可吸收缝线在主操作口的头侧上一肋间穿入，于副操作空使用双关节分离钳在胸腔内抓持缝线后将缝线从结扎缝合引线器脱离，此时在主操作口足侧下一肋间穿入结扎缝合引线器，在胸腔内由分离钳夹持缝线经结扎缝合引线器钩爪夹持后将缝线牵拉出胸腔外，以此依次行连续缝合共5次缝合引线操作后拉拢缝线将主操作口闭合，打结结束缝合完成肋间肌及壁层胸膜的缝合。

Postoperative follow-up chest CT:If the CT indicates that the lung tissue at the main incision site has herniated through the intercostal space to the outside of the rib bony structure,it is considered positive;otherwise,it is negative.

Record the bleeding condition at the intercostal incision. If there is bleeding at the intercostal incision, record the hemostasis time in detail.

Record the volume of closed thoracic drainage every 24 hours,and document for 3 days postoperatively.