BUZZ-Neovasc Inc: Device shows benefit in chest pain patients
** Medical device maker's shares up 41.2 pct at $1.08
** Shares jump as much as 67.3 pct to $1.28, highest in more than a month
** Company's device to treat refractory angina showed benefits in patients enrolled in a small trial
** At 9 months it was found that 17 of 23 patients showed at least one improvement on the Canadian Cardiovascular Society score which measures severity of angina or chest pain
** Up to Friday's close, stock had lost 83 pct this year
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