According to reports in the literature, the incidence of abdominal wall bleeding due to puncture during surgical laparoscopic surgery was 0.85%. Moreover, most of the vascular injury is related to the pneumoperitoneum and Trocar puncture, and the bleeding point mostly occurs at the 10mm puncture hole.

This may be because during laparoscopic surgery, the process of pneumoperitoneum needle puncture, pneumoperitoneum and the first puncture hole in the abdominal wall are not performed under direct vision. There is a certain degree of blindness during the operation, which is particularly easy to damage the abdominal wall blood vessels and cause bleeding.

Secondly, improper selection of the puncture position, and blind dilation or cutting with a sharp instrument when taking the specimen can also easily damage the abdominal wall blood vessels.

In addition, a lot of bleeding from poking holes occurs in the main operating hole. This may be due to the relatively large diameter of the Trocar, especially when passing through the abdominal artery behind the rectus abdominis muscle, which easily causes the vascular rupture. It may also be because the main operating hole is relatively close to the umbilicus, or it may be caused by repeated operation of the blood vessel tear during the operation.

Third, because the abdominal wall of obese patients is relatively thick, the cannula has a long sneak distance during puncture, which is easy to damage the blood vessels of the abdominal wall, especially when the puncture fails to enter vertically but enters diagonally, it is more likely to bleed.

Finally, the cause of bleeding is also related to the patient and the surgeon's own factors.

For example, the patient's own blood coagulation function is poor, easy to bleed, or intra-abdominal adhesions lead to abnormal anatomy, and it is easy to accidentally injure the internal organs and cause bleeding.

According to reports in the literature, a lot of bleeding from poking holes is caused by the operator's carelessness and omission during the operation.

A lot of bleeding from the poking hole was discovered after the operation, and this was "thanks" to the existence of Trocar. Because even if the puncture has damaged the blood vessels in the abdominal wall, the damaged blood vessels will be compressed without bleeding. At this time, the surgeon's attention is usually not drawn, but hemorrhage occurs after the Trocar is removed after the operation.