thoratec _025_thoratec _034_thoratec _019_thoratec _020_thoratec _030_thoratec _038_thoratec _040_thoratec _042_thoratec _042 _01thoratec _045_thoratec _046_thoratec _048_thoratec _054_thoratec _063_thoratec _066_thoratec _068_thoratec _072_thoratec _074_thoratec _076_