ROLLING JOINT AND BLOOD CIRCUIT

摘要

PROBLEM TO BE SOLVED: To prevent the generation of blood coagulation in a passage communicating a blood channel and a fluid channel of a heparin tube, etc. SOLUTION: In this rolling joint, the connecting part A of a main tube is formed in front of a barrel part 2, the connecting part B of a pump tube is formed behind the barrel part 2 and a straight tube-like part C with an inner diameter formed nearly the same as the inner diameter of the main tube 11 is formed between the connecting parts A and B. Then, a branch line or the connecting tube 5 of a sampling port is formed at the side part of the straight tube-like part C and a passage 7 communicating a blood channel inside of the part 2 and a branch line or the fluid channel of a sampling port is not formed at the inner surface taper part 8 of the connecting part B of the pump tube but is formed only at the side wall of the straight tube-like part C.