Positive rate of biopsy, mean puncture time, incidence of intrapulmonary hemorrhage and incidence of pneumothorax were also calculated.

The utility model has the advantages of simple operation process, short puncture time, and less incidence of intraoperative and postoperative thoracic infections.

Mean puncture time, positive rate of biopsy, incidence of intrapulmonary hemorrhage and incidence of pneumothorax had no significant difference between two groups.