Multicenter Prospective Randomized Trial about Clinical Effect of Absorbable Suture Materials against Surgical Site Infection in Digestive Surgery

Interventions: Use of silk sutures in peritoneal cavity Use of absorbable sutures in peritoneal cavity Primary outcome(s): Rate of surgical site infection occurrence Study Design: Parallel Randomized干预措施：腹腔内使用丝线缝合线（silk sutures） 腹腔内使用可吸收缝合线（absorbable sutures） 主要结局指标：手术部位感染（surgical site infection）发生率 研究设计：平行随机设计（Parallel Randomized）