DIFF Subgroup Additional Only
A61M 2016/0661 Full Title
Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators (iron lungs A61H31/02); Tracheal tubes > Respiratory or anaesthetic masks
A61M 2016/0661 Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators (iron lungs A61H31/02); Tracheal tubes > Respiratory or anaesthetic masks