5 of 7
4th place: Ortholntrinsics
4th place: Ortholntrinsics
Robert Likamwa (left), Steve Xu
School: London School of Economics and Rice University
Business concept: Medical device that can assess and quantify hand strength, enabling physicians to make more accurate diagnoses and to track rehabilitation progress
Judge's comment: "Their device can provide much more -- and more accurate -- information about hand strength. The challenge is in marketing it: Is this a must-have or a nice-to-have?"

Perhaps because there are only two members of his team presenting at the contest -- and the other is an undergraduate -- Steve Xu felt the need to reassure judges that "we do have adult supervision." But Xu exudes maturity beyond his years, which he pinpoints at "22.5."

Xu worked with three others to build a tool to provide doctors with an accurate and quantifiable way to measure hand strength. Carpal tunnel syndrome alone costs $2 billion a year, and a quarter of the 500,000 surgeries fail. The technology may also be useful in assessing neuromuscular disorders like Parkinson's disease and ALS, and in rehabilitating stroke victims.

The team estimates their invention, called Prime, could grab sales of $14 million in year five. By then Xu hopes to be an MD. This fall he'll attend Harvard Medical School, so about 20% of the $500,000 the team wants to raise is earmarked for recruiting a fulltime CEO. Xu says he plans to stay involved -- just as he remains part of his first startup, which he co-founded when he was just 19.

NEXT: 5th place: Ambiq Micro

Last updated June 11 2010: 1:32 PM ET
More Galleries
50 years of the Ford Mustang Take a drive down memory lane with our favorite photos of the car through the years. More
8 CEOs who took a pay cut in 2013 Median CEO pay inched up 9% in 2013 to $13.9 million. But not everyone got a bump last year. Here are eight CEOs who missed out. More
10 best convertibles now that spring has sprung It's finally time to put the top down. Here are our 10 favorite rides for the warmer months to come. More
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.