| Lowsley tractor | A slender curved instrument with flexible blades at its tip, which can be opened or closed by rotation at the proximal end of the tractor; it is passed per urethram into the bladder and used to retract the prostate gland downward into the operative field in the initial stages of perineal prostatectomy. (05 Mar 2000) |
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| Lowsley, Oswald | <person> U.S. Urologist, 1884-1955. See: Lowsley tractor. (05 Mar 2000) |