A device for resealing a simulated medical fluid bag includes: a first hollow section having a first end and a second end, where the first end of the first hollow section terminates in a point； a second hollow section having a first end and a second end, where the first end of the second hollow section is connected to the second end of the first hollow section； and a fluid-tight seal disposed between the first hollow section and the second hollow section. A simulated medical fluid bag and a method of resealing a medical fluid bag are also disclosed.
