| 摘要 |
A retractor for surgical operations on the arteria haemorrhoidalis comprising a retractor tube (1) having a closed and rounded distal end (101), to be inserted in the anal cavity, a window (8) on the lateral surface, through wich the artery is ligated, and an open proximal end (201) to which is connected a gripping handle (M) which removably houses a light source (F). In the portion (601) connecting the handle to the distal end of the retractor tube a channel is provided housing a parabolic mirror which reflects the light supplied by the light source into the retractor tube to illuminate the lateral window. An ultrasonic probe for the detection of the artery is removably housed in a longitudinal chamber (10) provided at the interior of the retractor tube, extending from the proximal end of the retractor tube to a lateral opening (7). The ultrasonic probe is preferably protected in a thin, disposable and easily removable sterilised sheath to allow the hygienical reutilisation of the same probe. <IMAGE> |
