Methods 260 patients with permanent central venous catheterization were devided into two groups randomly. 160 patients used CLAVE connector and 100 patients used heparin cap.

• 方法对260例深静脉置管成功的患者分别采用可来福接头及肝素帽封管,随机分为两组,160例采用可来福接头,100例采用肝素帽。