Abstract: Objective To investigate the efficacy of the clinical application of silicone rubber negative pressure suction ball used in Type Ⅲ wounds in emergency laparotomy.Methods A total of 106 patients with in the infected laparotomy wounds，were treated with wound suture.The patients were radomly divided into observation group and control group，54 cases in observation group，52 cases in control group .The silicone rubber negative pressure suction balls were used in observation group，while the control group underwent conventional abdomen closure.Postoperative wound infection healing was observed in two groups of patients.Results The observation group had higher primary healing rate than in the control group，There were significant differences between the two groups，in the primary healing rate（90.7%，71.2%），the hospital stays of observation group and control group were（10.49±2.10）d and（16.26±5.48）d，respectively；the time of dressing change（3.62±1.72）and （8.23±4.99），respectively， and the postoperative incision pain（3.79±0.88）and（5.20±1.25），respectively（P＜0.05）.Conclusion The silicone rubber negative pressure suction ball used in the infected  laparotomy wounds can effectivly reduce the incidence of postoperative infection，the effct is significant.

Key words: acute abdomen, negative pressure suction ball, Type Ⅲ wounds, postoperative infection, wound suture