Impact of Experience on Results With the Third Eye Retroscope

Colorectal Neoplasia Clinical Trial

Official title: Impact of Experience With the Third Eye Retroscope on Detection Rates and Withdrawal Times During Colonoscopy

Status Completed

Clinical Trial Summary

The Third Eye Retroscope is a device that can be used with a colonoscope to improve the ability of a physician to see areas of the colon that may be hidden from the view of the colonoscope.

Previous studies have shown that physicians are able to detect additional polyps when they use the device along with the colonoscope. The purpose of this study is to determine whether physicians can detect greater numbers of additional polyps as they gain in experience with the device.

Clinical Trial Description

Purpose: This study is intended to determine characteristics of the "learning curve" for use of the Third Eye Retroscope during colonoscopy, both in terms of efficacy for detection of abnormalities in the colon and time-efficiency for endoscopists

Device Description: The Third Eye Retroscope is an auxiliary imaging device that is designed to allow visualization of "hidden areas" during colonoscopy by providing an additional, retrograde view that complements the forward view of the colonoscope.

After a standard colonoscope has been advanced to the cecum, the Third Eye Retroscope is inserted through the instrument channel of the colonoscope. As it emerges from the distal tip of the colonoscope, the Third Eye Retroscope automatically bends 180 degrees to form a "J" shape. Its sensor then provides a continuous retrograde view of the colon throughout the process of withdrawal of the colonoscope.

The retrograde view assists the endoscopist in visualizing the proximal aspect of haustral folds and rectal valves, as well as the areas behind flexures and the ileocecal valve. With this additional point-of-view, the endoscopist may be able to detect lesions that can be missed by the forward-viewing colonoscope.

Study Design: Patients who are scheduled for colonoscopy will be recruited to the study and examined with the Third Eye Retroscope in conjunction with a standard colonoscope. For each polyp that is found, the endoscopist will indicate whether it could be seen with the colonoscope, or if it could be found with the colonoscope only because it was first detected with the Third Eye.

Each investigator will perform colonoscopies on 20 patients, who will be segmented into four quartiles according to the order of their procedures. Mean results for the quartiles will be compared in order to evaluate the learning curve for Third Eye colonoscopy. ;

Study Design

Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic

Related Conditions & MeSH terms

• Colorectal Neoplasia

• NCT number: NCT00969124
• Study type: Interventional
• Source: Avantis Medical Systems
• Status: Completed
• Phase: N/A
• Start date: January 2009
• Completion date: October 2009