The present invention relates to a reinfusion tube system (10) comprising a reinfusion fluid tubing comprising a pre-pump loop section (20), a post-pump loop section (30), and a pump loop section (40)； and one of- a check valve (70) positioned at an end or between the ends of the reinfusion fluid tubing such that it is provided to block fluid flow through the check valve (70) in a direction from the post-pump loop section (30) to the pre-pump loop section (20), and- a check valve adapter (I, II, III) comprising a check valve (70), the check valve adapter (I, II, III) being configured to be connected to an end or to be positioned between the ends of the reinfusion fluid tubing such that the check valve (70) is provided to block fluid flow through the check valve (70) in a direction from the post-pump loop section (30) to the pre-pump loop section (20).
