The mechanism (14) supports the short length refractory outlet tube (16) and the long length refractory flow protection tube (18) side by side.

该机构（14）并排支撑短尺寸耐火出口管（16） 和长尺寸耐火流动保护管（18）。

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Objective: to summarize 10 cases of serious heart valve disease with refractory cardiac resuscitation and explore a new method of myocardial protection.

前言：目的：总结10例重症瓣膜置换患者心脏复苏困难的成功处理经验，尝试心肌保护新方法。

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