Multi-center real world study on the prevention of early complications after inguinal hernia repair with new hernia wearable device        ZOU Zhen-yu*, LIU Yu-chen, ZHANG Ding-yuan, et al. *Department of Hernia and Abdominal Wall Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 10043, China 
Corresponding author: WANG Ming-gang, E-mail：wmgonly@126.com
Abstract    Objective    To investigate the safety and clinical value of using new hernia wearable device (HWD) in preventing early complications after inguinal hernia repair. Methods    From March 1, 2022 to August 31, 2022, a total of 497 patients who underwent inguinal hernia repair in 53 hospitals were prospectively enrolled in the study. All patients used HWD to compress the operative region after surgery. The incidence of seroma and postoperative pain scores were followed and analyzed. Quality of life was assessed using the Carolina Comfort Scale (CCS) and satisfaction with the use of the device was assessed. Results    Of 497 patients, laparoscopic inguinal hernia repair was the main surgical method, accounting for 91.3%. Lightweight polypropylene was the main type of mesh, accounting for 84.7%. The median operating time was 60 (49-80) min. Four hundred and eighty-nine cases were followed up one month after surgery, and the follow-up rate was 98.4%. The overall incidence of seroma was 7.2%, the seroma incidence after laparoscopic surgery was 7.4%, and the seroma incidence after open surgery was 4.7%. Before using HWD, on the day of using HWD, one week after surgery, and one month after surgery, overall VAS scores were (2.9 ± 1.9), (2.3 ± 1.9), (1.5 ± 1.6), and (1.0 ± 1.2), respectively. VAS scores on the day of using HWD were significantly lower than those before using HWD (P<0.001). Overall CCS scores were low one week and one month after surgery. The CCS score was positively correlated with the severity of pain (r=0.903). The overall satisfaction rate of HWD one week after surgery was 95.0%. Conclusion  HWD can, to a certain degree, reduce the incidence of seroma, relieve postoperative pain, and improve the quality of life after inguinal hernia repair. User satisfaction is high. The device can be popularized and applied in clinical practice.