Background
Megachannel is a newly developed colonic access system allowing rapid and multiple
passes of the colonoscope to the right side of the colon.
Objective
The aim of this study was to evaluate the safety and clinical feasibility of placing
a 100 cm Megachannel prototype in the right side of the colon.
Setting
Six centers, international, both surgeons and gastroenterologists performing endoscopy.
Design and Intervention
Patients scheduled for colonoscopy with suspected right-side colonic polypoid lesions
were included. The prototype was loaded onto a 160 cm lower GI endoscope and introduced
via colonoscopic guidance.
Main Outcome Measurement
The ability to place this device in the right side of the colon.
Results
The Megachannel prototype was introduced in 41 patients (19 female, mean age 54 years)
undergoing colonoscopy. The cecum was reached in 27 cases (66%) within 18 minutes
(range, 3-35 minutes) and with 73 cm (range, 40-100 cm) of the device being inserted
into the colon. Mild tissue bruises and mild pain were observed in 5 and 3 patients,
respectively. In 14 patients, the device assisted the removal of multiple polyps (2-12)
as tissue was repeatedly retrieved through the channel. The device also allowed delivery
of an endoscopic US scope or suction caps to the right side of the colon.
Limitations
Prototype performance may differ from the actual product (80 cm in length, redesigned
introducer plugs). Small number of patients, difficult in diverticular disease.
Conclusions
This newly developed colonic access system can be safely placed in the right side
of the colon and is useful for a variety of advanced procedures that require repeated
insertion of the colonoscope or delivery of bulky instruments. (Clinical trial registration
number: NCT00987896.)
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References
- Design and instrumentation of new devices for performing appendectomy at colonoscopy (with video).Gastrointest Endosc. 2008; 68: 139-145
- Unsedated colonoscopy: patient characteristics and satisfaction in a community-based endoscopy unit.Gastrointest Endosc. 2009; 69: 567-572
Article info
Publication history
Accepted:
December 23,
2009
Received:
October 6,
2009
Footnotes
DISCLOSURE: All authors disclosed no financial relationships relevant to this publication.
Identification
Copyright
© 2010 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights reserved.