Additional working channel (AWC®) for flexible endoscopes for insertion of instruments or suction and flushing.

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Use of the AWC®

The AWC® (Additional Working Channel) is an endoscopic system for providing an additional working channel for flexible endoscopes.

The AWC® can be used for a variety of applications:

  • EMR+: Resection of lesions with a combination of snare and anchor/grasper
  • ESD+: Dissection of lesions with a combination of grasper and knife or Coag Dissector
  • Clip removal: facilitated removal of OTSC® clips with the help of grasper and DC Cutter
  • Bleedings (additional lumen for suction and flushing)
  • Helpful as an additional tool for a wide range of applications

Dimensions and specifications

Attachment (1) For endoscope diameter from 8.5 to 13.5 mm
Shaft (2) / (A) Shaft length:
122 cm (endoscope insertion length: 103 – 110 cm)
185 cm (endoscope insertion length: 160 – 170 cm)
Adaptor for fixation at endoscope handle with Luer-lock (3)
Valve (4)
Sleeve (5)
Silicone nozzle (6) Facilitates mounting in endoscope diameter ≤ 10 mm
Appropriate instrument diameter up to 2.8 mm
Items per package 2
Reference number 200.57.01 (122 cm)
200.57.04 (185 cm)

Application of the AWC®

Injection into the submucosa
Positioning of snare and OTSC® Anchor or FTRD® Grasper
Elevation of the lesion and snare closure
Push-back* of the OTSC® Anchor or FTRD® Grasper while snare stays closed and subsequent resection

* Note: Anchor needles must not be captured with the snare during the push-back move. If in doubt, the anchor needles can be closed to avoid a short circuit.

Example *:

* Source: Prof. K. Caca Dr. B. Meier, Hospital Ludwigsburg, Germany [In-vivo model]

Marking of the lesion with the snare tip
Injection of LiftUp® into the submucosa
Circumferential incision with the snare tip
Elevation of the lesion with FTRD® Grasper or OTSC® Anchor and snare closure
Push-back* of the OTSC® Anchor or FTRD® Grasper while snare stays closed and subsequent resection

* Note: Anchor needles must not be captured with the snare during the push-back move. If in doubt, the anchor needles can be closed to avoid a short circuit.

Marking
Injection with LiftUp®
Circumferential incision (with AqaNife® or snare tip)
Endoscopic submucosal dissection with AqaNife®
Resection in EMR+ technique (snare, grasper and AWC®)
Marking
Injection of LiftUp®
Incision of 4⁄5 of the total circumference
Endoscopic submucosa dissection with AqaNife® and additional grasper through the AWC®

Example *:

* Source Prof. Dr. A. Meining, University Hospital Ulm, Germany [ex-vivo model]

Clip removal with DC Cutter and an additional grasper through the AWC®

Example *:

* Source: Prof. Dr. Marc O. Schurr, Ovesco Endoscopy AG, Tuebingen, Germany [In-vivo model]

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