Shares of I-Flow Corp., a Lake Forest medical device maker, rose some 15% after it said a clinical study of its lead device showed positive results.
I-Flow said its On-Q device reduced the rate of surgical site infections and the length of hospital stays in a study of 120 colorectal surgery patients.
On-Q is a device that uses non-narcotic pain relief medication.
Shares closed up about 13% to $16.50 on Thursday.
Earlier on Thursday, I-Flow traded as high as $17.47, surpassing a previous 52-week high of $16.92.
