Patent ID: 7695432

Claim:
An instrument for use in the treatment of a prolapsed hemorrhoid, comprising: a tube having: a distal end to be inserted into the rectum of a patient; an open proximal end; and a shell wall encompassing an inner hollow space, said shell wall having an elongated opening extending in an axial direction of said tube, a ligature opening at said distal end of said tube, and a cylindrical section located between said distal end and said proximal end, said cylindrical section forming the largest portion of a longitudinal extent of said tube, said ligature opening being connected to a distal end of said elongated opening and extending laterally from said distal end of said elongated opening such that said ligature opening and said elongated opening form an L-shaped opening; a closure device for closing and opening said elongated opening of said tube, said closure device comprising a closure part formed of a hollow cylinder shell portion, said closure part being rotatable with respect to said tube about a longitudinal axis of said tube, said closure part being arranged within said tube or such that said tube is arranged within said closure part, so as to continuously and successively expose said elongated opening in a direction from said distal end of said tube to said proximal end of said tube as said closure part is rotated with respect to said tube to thereby receive the prolapsed hemorrhoid within said tube; and an ultrasonic sensor on said tube located adjacent to said ligature opening and at a side of said ligature opening closest to said proximal end of said tube, and spaced apart from a lateral side of said elongated opening.