Bolivian Women Knit Heartplugs For Kids With Heart Defects

In Bolivia, highly skilled knitters have been enlisted to knit heart plugs for kids with holes in their hearts. At a clinic in La Paz, the women sit in a clean medical room and knit tiny, delicate occluders—medical devices for people who suffer from the congenital heart defect known as patent ductus arteriosis. These nimble-fingered women knit the occluders in under two hours with a single metal strand made of an alloy called nitinol.