Medtronic Inc., Fridley, said results from a study of its minimally invasive CoreValve System for treatment of aortic valve disease were published Friday in the journal Circulation. The study traced 663 patients treated at 14 hospitals in Italy since 2007. The article claims that patients with the CoreValve product had a 98 percent rate of procedural success, a 2.1 percent rate of adverse events, and "substantial improvements" of cardiac function. Medtronic is being evaluated in a U.S. clinical trial, which is needed before getting regulatory approval.


Graco Inc., Minneapolis, declared a regular quarterly dividend of 21 cents per common share, payable May 4 to shareholders of record on April 18. The company has about 60.1 million shares outstanding.

Mocon Inc., Brooklyn Park, declared a quarterly cash dividend of 10 cents per share, an increase from 9.5 cents, payable May 20 to shareholders of record on May 6.


SurModics Inc., Eden Prairie, said Eugene Rusch, vice president of manufacturing, has left the company. According to his separation agreement, Rusch will receive six months' base salary, a payment of $100,000, COBRA health care benefits for six months, and reimbursement of "other expenses," including temporary living arrangements.