Abstract: A clotting serum production device including a main chamber, an inlet housing, and an outlet port. The main chamber is defined by a first end wall, a second end wall opposite to the first end wall, and a side wall extending between the first end wall and the second end wall. The inlet housing extends from the first end wall. The inlet housing includes a first inlet port, a second inlet port, and a first conduit extending between the first inlet port and a second conduit. The second conduit extends between the second inlet port and the main chamber. The inlet housing is configured to provide one-way fluid flow from the first inlet port to the second inlet port and to provide one-way fluid flow from the second inlet port to the main chamber. An outlet port is in fluid communication with the main chamber and provides fluid communication with an exterior of the clotting serum production device.

Abstract: Methods, apparatus, and compositions related to generating and using thrombin. Methods include preparing a solution comprising thrombin by precipitating fibrinogen from a liquid comprising whole blood or a blood fraction. Precipitated fibrinogen is removed from the liquid to form a post-precipitation liquid that is incubated with calcium and a plurality of beads to form a clot. A solution comprising thrombin is separated from the clot. Thrombin prepared thereby can be used as a tissue sealant and in methods of applying a tissue sealant to subject, including application of an autologous tissue sealant.