Abstract: A rectal speculum for use in conjunction with a colon lavage apparatus has a pair of opposed lateral inlets disposed at the distal end for receiving fecal matter. An inlet tube includes a first annular barb at the terminal end for engagement by the end of a first length of tubing and a second annular barb for engagement by the end of a second length of tubing after severance of the first annular barb.

Abstract: A rectal speculum for use in conjunction with colonic lavage has an axially undulating exterior surface for defining an annular depression to receive and be gripped by the rectal sphincter muscle upon insertion of the speculum.

Abstract: A rectal speculum assembly for use with a colonic lavage machine includes a speculum and an obturator. The speculum includes an unobstructed main tube for directing fluids into and out of a patient's rectum, and an inlet tube for injecting treatment fluid into the main tube. The inlet tube intersects the main tube, forming an obtuse angle with respect to the proximal end of the main tube, so that inlet fluids are initially directed away from the patient's rectum, and thus do not interfere with fluided waste matter being discharged therefrom. In addition, a thumb rest is provided on the main body of the speculum for holding the speculum steady while the obturator is removed and a waste removal hose is connected.