Gomco Clamp
This devised was invented in 1935 by S. yellen and Aoron Goldstein, which then was marketed by the Goldstein Manufacturing Company (Gomco) – and patented it in 1940. It was claimed as able to provide bloodless circumcision of the newborn.

Method

"After properly cleansing the penis (E) and pubis, the dorsal aspect of the prepuce (A) is put on a stretch by grasping it on either side of the median line with a pair of hemostats. A flat probe, anointed with Vaseline, is then inserted between the prepuce and the glans to separate adherent mucous membrane. The prepuce is then gently drawn backward, exposing the entire glans penis. This is again cleaned. In case where the prepuce is drawn tightly over the glans, a partial dorsal slit will facilitate applying the cone of draw stud over the glans [?? sic]. (Note: If too long a slit is made, the cone has a tendency to slip of the glans. The slit should, therefore, be made only sufficiently long to enable the cone to be easily applied.)

After anointing the inside of the cone (B) , it is placed over the glans, allowing enough of the mucous membrane to fit below the cone so that too much is not removed. The prepuce is then pulled through and above the bevel hole in the platform (F), and clamped in place. In this way the prepuce is crushed against the cone, causing hemostasis. We allow this pressure to remain five minutes, and in older children slightly longer. The excess of the prepuce is then cut with a sharp knife without any danger of cutting the glans, which is always protected by the cone portion of the instrument, leaving a very fine one-thirty-second of an inch ribbon-like membrane formed between the new union of the skin and mucous membrane. The pressure is then released. The circumcision is completed and the penis covered with Vaseline gauze.

No anaesthesia is used.

On children older than twelve months, we find it advisable to insert a few sutures. At this date we have performed more than 500 circumcisions on the newborn and as yet have not encountered any infection or haemorrhage."

Hiram S. Yellen, "Bloodless circumcision of the newborn", American Journal of Obstetrics and Gynecology, Vol. 30, 1935, p. 1

A detailed procedure of how the Gomco clamp was applied can be found in

http://www.cirp.org/library/procedure/gomco/

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