Safety and Efficacy of the Sterile Single-use Circular Stapling Device CIRCCURER II (Jiangxi Langhe Medical Instrument Co., Ltd., Guangzhou, China)

Bleeding

Number of gauzes used intraoperatively

Time frame: Intraoperatively

Postoperative hematoma

Measurement defined as follows: mild=1, moderate=2 and large=3, according to the surgeon's estimation

Time frame: First postoperative day

Postoperative hematoma

Measurement defined as follows: mild=1, moderate=2 and large=3, according to the surgeon's estimation

Time frame: Seventh postoperative day

Postoperative oedema

Measurement defined as follows: mild=1, moderate=2 and large=3, according to the surgeon's estimation

Time frame: Twenty first postoperative day

Duration of procedure

Minutes

Time frame: Intraoperative (Measurement begins at the time of the beginning of the sterilisation of the surgical field and ends at the time of the completion of the bandeage of the wound)