经皮胸膜活检对原因不明的胸腔积液很有诊断价值。但现有的胸膜活检针尚不理想。新研制出的Raja 胸膜活检针由两个同心针管组成,其外径为3mm。用钛合金制作的活检勾安置在内管上,外管上有一活检孔的开口。本文比较了 Raja 针和 Abrams针作胸膜活检时的诊断率与安全性。方法与结果通过胸膜腔内滴入盐酸四环素溶液 Percutaneous pleural biopsy of the unexplained pleural effusion is very diagnostic value. However, the existing pleural biopsy needle is not ideal. The newly developed Raja pleural biopsy needle consists of two concentric needle tubes with an outer diameter of 3 mm. A biopsy hook made of a titanium alloy is placed on the inner tube with an opening for a biopsy hole. This article compares the diagnostic rates and safety of Raja’s needle and Abrams needle for pleural biopsy. Methods and Results Intracranial infusion of tetracycline hydrochloride solution through the pleural cavity