The reason why the pig fiber adhesive in the hospital cannot be used is that, according to the headline search query, it is known that the pig-derived fibrin adhesive (traditional animal-derived collagen) contains fibrinogen and coagulation factor XIII, and the catalyst contains coagulation The enzyme, after mixing, simulates the final stage of blood coagulation, converts fibrinogen into fibrin monomers, and catalyzes the formation of fibrin polymers under the action of activated factor XIII and Ca2+, forming a layer of translucent milky white gel. Because this adhesive is made from traditional animal-derived collagen, it can cause allergic reactions. A hospital refers to a medical institution that provides patients with necessary medical examinations, treatment measures, nursing techniques, consultation services, rehabilitation equipment, treatment and transportation and other services in accordance with laws, regulations and industry standards, with the main purpose of saving lives and healing the wounded.