前言： 根据双腔中心静脉导管的特点，选择了合适的导管成型工艺，并设计了挤出机机头的芯模和口模。
Based on the characteristics of double cavity central venous catheters, Selected the suitable extruding process, and designed the extruding die.
所有患者均在有创动脉压监测下予麻醉诱导行双腔气管导管插管，并建立中心静脉压监测，以丙泊酚、芬太尼等维持麻醉。
All the patients were anesthetized with double lumen tube, artery and central vein catheterized for continuous invasive blood pressure and central venous pressure monitoring.
所述的导管为双腔中心静脉导管。
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