A system for effecting ischemic necrosis in a foreskin of a penis includes an inner ring having an inner surface comprising an inner diameter and an outer surface comprising an outer diameter and at least one circumferential groove; and an outer ring configured to substantially fit around the circumferential groove of the inner ring, wherein the inner ring is configured to fit to a portion of a glans of the penis that lies between an inner surface of the foreskin and the glans of the penis and the at least one outer ring is configured to fit an outer surface of the foreskin, the inner ring and the outer ring thereby compressing the foreskin in the circumferential groove with a compression force, and wherein the compression force is sufficient to effect ischemic necrosis in the foreskin.
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