CPC Subgroup
A61M 16/0688 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 16/0688 Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators (iron lungs A61H31/02); Tracheal tubes > Respiratory or anaesthetic masks