To validate the performance of the Poseidon System™ for fluid management during water-aided endoscopic procedures in the colon.

The Poseidon System is a fluid management system that is investigationally indicated to provide a pathway to control waste fluid during irrigation of the colon. The Poseidon device is a manually placed and controlled device that provides support and sealing on the perimeter of an endoscope while managing fluids naturally exiting the anus, during a colonoscopy procedure. The device consists of a introducer and hand piece that allows for passage of an endoscope with valves and a retention balloon that minimize fluid passage with a single-use waste bag for collecting fluid and debris. The Poseidon™ System is not yet FDA 510(k) cleared.

Inclusion Criteria:

1. Patients 18 years of age or greater.
2. Patients that have an indication to undergo water-aided colonoscopy.
3. Subjects with the ability to understand the requirements of the study, who have provided written informed consent, and who are willing and able to return for the required follow-up assessments.

Exclusion Criteria:

1. Subject unable or unwilling to provide informed consent.
2. Subjects with prolapsing hemorrhoids that require intervention or hemorrhoids that have been treated within last 3 months.
3. Prior TAMIS (Trans-anal minimally invasive surgery) or TEMS (Trans-anal micro endoscopic surgery).
4. Any condition that in the opinion of the Investigator would create an unsafe clinical situation that would not allow the patient to safely undergo an endoscopic procedure.
5. Pregnant or lactating women or women of childbearing potential who do not employ a reliable method of contraception as judged by the Investigator, and/or are not willing to use reliable contraception for the duration of study participation.
6. Patient is enrolled in another trial that could interfere with the endpoint analyses of this trial.

Not applicable to this trial. Trial and device validation will be used to commercially release product only.

Patients will be de identified and assigned a designated number for inclusion in case report forms. Source documents will contain patient information and assigned study participant number.