Mike Schaffner directs information technology for the Valve and Measurement Group of oil and gas products and services company Cameron in Houston.

FORBES: Ending Apple's AT&T Problem

However, 5% of patients who got the valve had strokes, compared to 1% in the control group, and 16% had vascular complications, compared to 1% in the control.

FORBES: Heart Valve Victory

It took Schuler's group one year and 80 computer simulations before they cut any plastic prototypes of the airflow valve.

FORBES: Innovation