EXHIBIT 11.1 BIO-VASCULAR, INC. COMPUTATION OF INCOME (LOSS) PER SHARE (In thousands, except share data) Three Months Ended Six Months Ended April 30, April 30, (unaudited) (unaudited) ------------------ ------------------ 1997 1996 1997 1996 ---- ---- ---- ---- Net income (loss) data: Income from continuing operations........................................ $ 97 $ 263 $ 222 $ 787 Income from discontinued operations...................................... (920) (287) (920) (606) --------- --------- --------- --------- Net income............................................................... $ (823) $ (24) $ (698) $ 181 ========= ========= ========= ========= Net income (loss) per common and common equivalent share, primary: Continuing operations.................................................... $ .01 $ .03 $ .02 $ .08 Discontinued operations.................................................. (.10) (.03) (.10) (.06) --------- --------- --------- --------- Net income............................................................... $ (.09) $ .00 $ (.07) $ .02 ========= ========= ========= ========= Net income (loss) per common and common equivalent share, fully diluted: Continuing operations.................................................... $ .01 $ .03 $ .02 $ .08 Discontinued operations.................................................. (.10) (.03) (.10) (.06) --------- --------- --------- --------- Net income............................................................... $ (.09) $ .00 $ (.07) $ .02 ========= ========= ========= ========= WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES Primary: Weighted average number of common shares outstanding..................... 9,511,389 9,438,617 9,501,050 9,383,526 Common equivalent shares: Dilutive stock options and warrants, using Treasury Stock Method....... -- -- -- 515,321 --------- --------- --------- --------- 9,511,389 9,438,617 9,501,050 9,898,847 ========= ========= ========= ========= Fully diluted: Weighted average number of common shares outstanding..................... 9,511,389 9,438,617 9,501,050 9,383,526 Common equivalent shares: Dilutive stock options and warrants, using Treasury Stock Method....... -- -- -- 519,473 --------- --------- --------- --------- 9,511,389 9,438,617 9,501,050 9,902,999 ========= ========= ========= =========