This 3D-printed plastic stethoscope costs less than $3 but performs as well as models costing almost $200

摘要

An emergency room physician who has worked in some of the poorest parts of the world has developed a plastic, 3D-printed stethoscope that performs on a par with conventional devices. It costs less than $3 to make, and can be produced by anyone with access to a 3D printer and ABS polymer. Traditional brand-name stethoscopes run between $150 and $190.