The Lunar Ball Segmentvalve has a full-bore opening where material cannot build up, accumulate, or be captured within the valve body.
采用全径开口设计，这样，材料不会堆积或粘连在阀体上。
2
In this paper, we try to segment region of interest of human heart that in the contrast medium and segment mitral valve. At last achieve virtual endoscopy through the segmented images.
本文研究心脏在造影剂下的分割和心脏二尖瓣的分割，最后采用两次分割所得到的图像来实现虚拟内窥镜。
3
The valve seal material can be Perfluoroelastomer or Viton, and it is designed to inflate after the valvesegment is closed.