When inserting a catheter into a vein, doctors can make mistakes that cause serious complications, such as punctured lungs. They often use ultrasound to visualize the body, but ultrasound can’t clearly pick up a needle. AxoTrack makes catheterization almost foolproof by enabling doctors to see both the vein (with ultrasound) and the needle’s location (with magnetic sensors) on one video screen. In tests, the device increased first-attempt success rates from 37 percent to 99 percent. Price not set