The invention discloses a low-temperature
plasma induced membrane-type
artificial lung graft modification method. The modification method includes the following steps that poly 4-methyl-1-amylene membrane materials for a membrane-type
artificial lung are placed into a cavity of a
plasma processing instrument, working gas is any one or two of pure
ammonia gas,
pure oxygen, pure
argon and pure
carbon dioxide, the pressure of the working gas is kept to be 20 Pa, the materials are processed for 1-5 min at the
discharge power of 30-300 W, the gas flow is 30 ml / min-120 ml / min,
phosphoryl choline compound steam is led into the cavity to induce
vapor phase grafting, the
steam pressure is stabilized to be 20 Pa, and the materials are processed for 1-5 min at the
discharge power of 30-300 W. According to the method, the
artificial lung membrane materials are modified through the low-temperature
plasma technology, the process is simple, consumed time is short, the efficiency is high, the
energy consumption is low, the
biocompatibility of a poly 4-methyl-1-amylene (PMP) membrane is obviously improved, and the
transmission performance of O2 and CO2 is slightly reduced compared with that before modification, however, the method still has wide medical application prospects.