EXHIBIT 11.1 BIO-VASCULAR, INC. COMPUTATION OF INCOME (LOSS) PER SHARE (In thousands, except share data) Three Months Ended Nine Months Ended July 31, July 31, (unaudited) (unaudited) ------------- ---------- 1997 1996 1997 1996 ---- ---- ---- ---- Net income (loss) data: Income from continuing operations.................... $ (491) $ 111 $ (270) $ 898 Loss from discontinued operations.................... -- (288) (920) (894) ---------- ---------- ---------- ---------- Net income (loss).................................... $ (491) $ (177) $ (1,190) $ 4 ========== ========== ========== ========== Net income (loss) per common and common equivalent share, primary: Continuing operations................................ $ (.05) $ .01 $ (.03) $ (.09) Discontinued operations.............................. -- (.03) (.10) (.09) ---------- ---------- ---------- ---------- Net income (loss).................................... $ (.05) $ (.02) $ (.13) $ -- ========== ========== ========== ========== Net income (loss) per common and common equivalent share, fully diluted: Continuing operations................................ $ (.05) $ .01 $ (.03) $ .09 Discontinued operations.............................. -- (.03) (.10) (.09) ---------- ---------- ---------- ---------- Net income (loss).................................... $ (.05) $ (.02) $ (.13) $ -- ========== ========== ========== ========== WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES Primary: Weighted average number of common shares outstanding......................................... 9,544,748 9,439,783 9,511,990 9,386,040 Common equivalent shares: Dilutive stock options and warrants, using Treasury Stock Method............................. -- -- -- 473,869 ---------- ---------- ---------- ---------- 9,544,748 9,439,783 9,511,990 9,859,909 ========== ========== ========== ========== Fully diluted: Weighted average number of common shares outstanding......................................... 9,544,748 9,439,783 9,511,990 9,386,040 Common equivalent shares: Dilutive stock options and warrants, using Treasury Stock Method............................. -- -- -- 483,529 ---------- ---------- ---------- ---------- 9,544,748 9,439,783 9,511,990 9,869,569 ========== ========== ========== ==========