The discs are made of flexible nitinol metal and covered in polyester fabric that encourages heart tissue to grow over the discs, completely covering them during healing.

• 这些圆片被能变形的镍钛记忆合金制成，其上覆盖聚酯纤维，这能促进心脏组织在愈合期间沿圆片生长并完全覆盖它们。