An Exploratory Study on the Treatment of Chronic Obstructive Pulmonary Disease With Autologous Bronchial Basal Cell Transplantation

the investigators obtained extraction bronchial basal cells micro tissue from 3\~4 grade bronchus, then purified and selectively amplified bronchial basal cells to reserve . After a period of time, the basal lamina of the bronchial epithelial cells can be stored in the liquid nitrogen cell bank for a long time. Before applied to the patient, bronchial basal cells need to go through a series of strict examination. Then, bronchoscopy was performed again and the bronchial basal lamina suspension was injected directly into the lesion site .