Medical tubing needs to meet the conditions

(1) the chemically inert ª¤ will not react with body fluid contact;

(2) on the human organism does not cause inflammation and foreign body reaction;

(3) does not cause cancer

(4) Allergic allergic reaction will not occur;

(5) have good blood compatibility, no hemolysis without coagulation;

(6) long-term implanted ª¤ nor loss of tensile strength and elasticity, physical and mechanical properties;

(7) can withstand necessary disinfection measures without distortion;

(8) easy to process into the needs of complex shapes.