US Patent 7771651 Method for radiochemical sterilization

This invention deals with package components for radiochemical sterilization of medical or pharmaceutical products consisting of a hermetically sealed foil pack containing (1) a solid device, as in absorbable sutures and meshes, in a perforated holder or a liquid formulation in a sealed, flexible dispenser, as in absorbable cyanoacrylate-based tissue adhesive; (2) a microparticulate, unstabilized polyformaldehyde as a source of radiolytically generated formaldehyde encased in a sealed pouch comprising a porous, non-woven or woven fabric; and (3) a nitrogenous compound capable of reacting with residual formaldehyde, such as melamine or urea, that is encased in a sealed pouch comprising a porous, non-woven or woven fabric.