Over-the-scope-grasper: A new tool for pancreatic necrosectomy and beyond - first multicenter experience

Table 1 Over-the-scope-grasper in endoscopic pancreatic necrosectomy - procedural parameters

Number of cases	37
Number of patients	31
Sedation	34× NAPS
	3× anesthesia
Mean time to first necrosectomy	35.7 d (14-90 d)
Mean dimension of won	10.1 cm × 6.5 cm × 4.8 cm
Estimated percentage of necrosis within each collection	57% (20%-90%)
Mean number of DEN session for WON resolution	4.5 (1-13)
Access route/mean duration	Total (n = 37/59 min)
	33× transgastric (58 min)
	4× transduodenal (65 min)
LAMS (type, diameter)	26× LAMS
	15× PlumberTM (16 mm)
	8× hot AxiosTM (15 mm)
	1× hot AxiosTM (20 mm)
	2× SpaxusTM (16 mm)
	11× double pigtail stents
Additional tool	37× irrigation pump
	8× snare
Handling	19× endoscope removed for cleaning
	18× removal of endoscope not necessary

NAPS: Nurse administrated propofol sedation; LAMS: Lumen apposing metal stent; WON: Walled-off necrosis; DEN: Direct endoscopic necrosectomy; Plumber^TM: M.I.Tech, Pyeongtaek, South Korea; Hot Axios^TM: Boston Scientific, Marlborough, United States; Spaxus^TM: Taewoong Medical, Gimpo, South Korea.

Table 2 Over-the-scope-grasper in other indications - procedural parameters

Foreign bodies
Number of cases	8
Number of patients	8
Sedation	7× NAPS
	1× anesthesia
Mean duration	31.5 min (15-60 min)
Location	5× esophagus
	3× stomach
Type of foreign body	5× meat bolus
	2× tablets (intoxication)
	1× button cell batteries
Additional tool	1× forceps
	1× net
Blood clots/bleeding:
Number of cases	6
Number of patients	6
Sedation	5× NAPS
	1× anesthesia
Mean duration	52.2 min (20-100 min)
Location	4× stomach
	2× duodenum
Additional treatment	3× OTSC
	1× TTS clip
	2× no treatment required
Prior to endoluminal vacuum therapy:
Number of cases	5
Number of patients	5
Sedation	5× NAPS
Mean duration	22 min (20-30 min)
Location	5× rectum
Additional tool	4× irrigation pump
	1× snare

NAPS: Nurse administrated propofol sedation; OTSC: Over-the-scope-clip; TTS: Through-the-scope.