Abstract: 【Objective】 To investigate the value of BARD gun with improved needle method in percutaneous transthoracic biopsy of pulmonary nodules (d ≤ 20 mm) under the shoulder blade area. 【Methods】 83 patients with solitary pulmonary nodules(d≤20 mm) from January 2011 to May 2015 in Guangdong No.2 provincial People’s Hospital wererecruited. The BARD gun with traditional recede needle method was implemented in 31 patients in traditional group

BARD gun with improved recede needle method was performed in52 patients in improved group.With 18 G BARD biopsy gun

2 or more tissue specimens were acquired for HE staining and immunohistochemical examination

some for further genetic testing.The statistics of two groups

including operation time

the success rate

the rate of positive diagnosis andcomplications

were recorded and analyzed. 【Result】 In the control group

the average operational duration was (63.6±7.6)min

the success rate of puncture 90.3%(28/31)

the positive diagnostic rate was 87.1%(27/31)

the incidences of complications was 22.6%(7/31)

in the experiment group

the average operational duration was (30.7 ± 4.5)min

the success rate of puncturewas 98.1%(51/52). The positivediagnostic rate was 96.2%(50/52). The incidences of complications was 3.8%(2/52).The differences in duration and rates had statistical significance(P < 0.05). 【Conclusion】 BARD gun with improved needle method have accuracy

less operational duration and less complications in percutaneous transthoracic biopsy of pulmonary nodules under the shoulder blade area

and it deserves to be further spread in the clinic.