Circumcision surgical procedure
With all these devices (except for the Shang ring), the same basic procedure is followed. First, the amount of foreskin to be removed is estimated. The foreskin is opened via the preputial orifice to reveal the glans underneath and ensure it is normal. The inner lining of the foreskin (preputial epithelium) is bluntly separated from its attachment to the glans. The device is placed (this sometimes requires a dorsal slit) and remains there until blood flow has stopped. Finally, the foreskin is amputated. Sometimes, the frenulum band may need to be broken or crushed and cut from the corona near the urethra to ensure that the glans can be freely and completely exposed.
With the Circumplast, once the glans is freed, the Circumplast is placed over the glans, and the foreskin is placed over the Circumplast. A ligature is then tied firmly around the foreskin and tightened into a groove in the Circumplast to achieve hemostasis. Foreskin distal to the ligature is excised and the handle is snapped off the Circumplast device. The Circumplast falls from the penis after the wound has healed, typically in four to six days.
With a Gomco clamp, the foreskin is dorsally crushed with a hemostat and then slit with scissors from the tip to the coronal sulcus. The foreskin is drawn over the bell shaped portion of the clamp and inserted through a hole in the base of the clamp. The clamp is tightened, "crushing the foreskin between the bell and the base plate." The crushed blood vessels provide hemostasis. The flared bottom of the bell fits tightly against the hole of the base plate, so the foreskin may be cut away with a scalpel from above the base plate.
With the Plastibell, once the glans is freed, the Plastibell is placed over the glans, and the foreskin is placed over the Plastibell. A ligature is then tied firmly around the foreskin and tightened into a groove in the Plastibell to achieve hemostasis. Foreskin distal to the ligature is excised and the handle is snapped off the Plastibell device. The Plastibell falls from the penis after the wound has healed, typically in four to six days.
With a Mogen clamp, the foreskin is pulled dorsally with a straight hemostat, and lifted. The Mogen clamp is then slid between the glans and hemostat, following the angle of the corona to "avoid removing excess skin ventrally and to obtain a superior cosmetic result" to Gomco or Plastibell circumcisions. The clamp is locked, and a scalpel is used to cut the skin from the flat (upper) side of the clamp. The clamp can be safely used by non-physician healthcare workers in resource-limited settings 
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