Instrument Presentation for a good exposure rectosigmoid is designed to facilitate the double test security integrity of the rectal wall. 1 - Test the air. 2 - Test with colored liquid. The rectal tube VECTEC is for single use and features a cannula distal ovoid form to increase in the rectal cavity and sigmoid. Because of its shape rear deck, a deadlock on the sphincter to seal is necessary to carry out tests. A stainless steel rod of small diameter deformable to fit the patient's anatomy secures air adn liquid. Comes with an ergonomic handle. On one side, a thin tube with check valve Luer valve and air injection or liquid, located in sterile area. In another, a large diameter tube fitted a red clamp for the removal of wast in a jar retention.