A Study of a Novel Disposable Endoscopic Purse-String Suture Auxiliary Instrument for the Treatment of Full-Thickness...

In this study, we aimed to evaluate the effectiveness of a novel endoscopic purse-string suture auxiliary instrument compared with traditional methods for closure of a full-thickness defect of the stomach in an ex vivo model.

Twelve perforation sites (10-20 mm in diameter) were created in the ex vivo porcine stomach models. Two physicians (A and B had performed endoscopic surgery for 6 and 3 years) performed suturing using both the experimental and traditional (control) instruments. Operation time, success rate, and number of attempts for successful suture required were recorded.

For physician A, the median suturing time was 56.50 s (interquartile range [IQR] 40.50 s, 134.50 s) and 215.50 s (IQR 63.75 s, 254.75 s) in the experimental and control groups. For physician B, they were 53.00 s (IQR 38.50 s, 87.75 s) and 174.00 s (IQR 104.50 s, 279.25 s), respectively. The differences between experimental and control groups were statistically significant for both physicians A (p = 0.010) and B (p = 0.004). The median number of attempts required for successful suturing in the experimental and control groups was 1 (IQR 1, 2) and 2 (IQR 1, 3) for physician A, and 1 (IQR 1, 1) and 3 (IQR 2, 3) for physician B, which were statistically significant for both physicians (p = 0.026 and 0.006). The overall success rate was significantly higher in the experimental group (100% vs. 75.0%, p = 0.022).

This novel purse-string suture auxiliary instrument may assist in single-channel endoscopic suturing operations, improve the suture success rate, reduce the number of operations required, and shorten the operation time.