Table 5 Clinical outcomes of gastric ESD using Multi-loop traction device in Clinical feasibility evaluation

The M-ESD (10 patients 11 lesions)

Year (y); median (range)

74 (66–87)

Gender (male: female)

9:1

Location (U/M/L)

5/5/1

Lesion position (Greater curvature/Lesser curvature/Anterior wall/Posterior wall)

4/1/2/4

Morphology (Depressed/Flat/Protruded)

5/0/6

Lesion size (mm) (longer axis); median (IQR)

12.0 (10.0–27.5)

Lesion size (mm) (shorter axis); median (IQR)

10.0 (8.0–24.0)

Submucosal dissection speed (mm²/min); median (IQR)

37.2 (29.7–59.8)

Rate of en bloc resection (%)

100 (11/11)

Rate of R0 resection (%)

100 (11/11)

Rate of accidental complications (perforation) during ESD (%)

0 (0/11)

Overall procedure time (min); median (IQR)

38.0 (27.0–63.5)

MLTD attachment time (min); median (IQR)

2 (1–2)

MLTD retrieving time (min); median (IQR)

1 (0–1)

Total local injection volume (mL); median (IQR)

21.5 (16.5–43.5)

Specimen area (mm²); median (IQR)

706.5 (580.1–1420.1)

Presence of ulceration (%)

18.2 (2/11)

successful MLTD attachment rate (number of successful MLTD attachment/number of attempts for MLTD attachment) (%)

91.7 (11/12)

Finally successful MLTD attachment rate (%)

100 (11/11)

Rate of MLTD retrieval (%)

100 (11/11)

MLTD attachment time (min); median (IQR)

2 (1–2)

MLTD extraction time (min); median (IQR)

1 (0–1)