1. MEDICAL DEVICES. TOOLS FOR USE IN SURGERY. CANNULAS. - CANNULA FOR VISCOELASTIC VISITEC ™ VISCOFLOW 4 0.4 X 22 MM (27G X 7/8 INCH) (10PCS / PACK) CAT. ? 585026 - 10 PACK. USED TO APPLY VISCOELASTIC TO INTRAOCULAR LENSES BEFORE IMPLANTATION. MANUFACTURER: BEAVER-VISITEC INTERNATIONAL INC. USA.