Rectal Specula & Retractors
Rectal specula and retractors have been developed for a variety of purposes. Simple designs for general examination and perhaps simple surgery, more complicated/special designs for more special examination, surgery, deep surgery and special surgery. The specula usually retract the sphincter by expansion in 1, 2 or 3 dimensions and most (except Czerny and Killian) can be fixed at any stage of expansion. The Killian, a multipurpose item originally developed as nazal speculum, is very narrow and suitable for children.

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