From Boys Deserve Better:
the "mold" shown above is a Circumstraint(tm), a "neonatal restraint device" made by Olympic Medical. Here's a charming description of the Circumstraint and its uses from a medical equipment and supplies web site:
The new Olympic Circumstraint is even more versatile and functional than the popular model purchased by over 11,000 hospitals throughout the world. The new, more compact Circumstraint, always a fast, easy means of immobilizing newborns for circumcision, fits inside a standard incubator or bassinet and is useful for a variety of additional procedures. Now Circumstraint is valuable when used for minor surgery, blood exchanges, catheterization, transfusions or infusions (including scalp IV's), or whenever immobilization is required for a neonatal procedure.
In less than 30 seconds, a nurse can immobilize the struggling infant securely in the correct position with Circumstraint. The immobilizer works on a proven principle of positive 4-point restraint. Soft wide VelcroŽ brand fastener straps encircle the infant's elbows and knees, depriving him/her of leverage. The child is held safely and securely without danger of escape. Circumstraint's comfortable contoured shape positions the infant, hips elevated, perfectly presenting the genitalia. The platform between the infant's legs provides support for a circumcision clamp. Without pins, towels, plastic shells or the threat of strangulation, Circumstraint snugly and securely immobilizes the infant with their entire torso visible.
More lightweight and compact than before, the new Circumstraint is only 25 1/4 x 13 x 3 1/2 inches and weighs less than two pounds. Always ready for immediate use, the Circumstraint has a hole for hanging in the OR or nursery. Several Circumstraints neatly stack nested on a shelf.
Circumstraint fits infants from 1800 grams to 4500 grams. The straps slide longitudinally in slots to adapt to infant length. Generous VelcroŽ brand fastener closures adjust to extremity circumference easily, merely press to fasten - peel apart to open.
Circumstraint maintains the high standards of nursery asepsis with minimum effort. Smooth, without cracks or crevices, Circumstraint is made of dense, non-absorbent plastic and wipes clean with any liquid disinfectant. The nylon VelcroŽ brand fastener straps are quick drying and may be laundered, steam or gas autoclaved or pasteurized.
Hospitals find Circumstraint highly cost effective. The Circumstraint permits a nurse to quickly immobilize an infant in the proper position, speeding procedures and saving valuable time for doctors. Exceptionally durable, Circumstraint gives long service, even with the heaviest use. Proven over many years, Circumstraint has become the infant immobilization standard for modern nurseries.