Adding air pressure within the annular space between the housing and sleeve can throttle, or close the valve.
在阀体外壳和套管之间的环形空间内施加气压，即可实现阀门的节流和关闭功能。
2
Objective to summarize the experience in treating mitral insufficiency (mi), due to secondary annular dilation in the posterior portion of the annulus with mitral valve reconstruction.
目的总结二尖瓣后环缝缩治疗二尖瓣关闭不全(MI)的临床经验。
3
Applying air pressure to the annular space between the sleeve and the body actuates the valve.