Surgical knives used for endoscopic submucosal dissection; hoods attached to endoscopes used for endoscopic submucosal dissection; medical tubes through which the endoscope is inserted; endoscopic variceal ligation devices for medical purposes; medical endoscopes for diagnosis and treatment and parts and accessories thereof, namely, endoscopic equipment; catheters for use in arterial perfusion; steerable type of microcatheter for the embolization treatment; catheters and parts and fittings therefor; portable low-pressure aspirators for drainage control after surgery; drainage tubes, drainage bottles and drainage bags for medical purposes; capillary drainage tubes; medical intubation equipment, namely, flexible guide tubes intubated into gastrointestinal tract; medical tubes and structural parts and fittings therefor for drainage; surgical tool used in coronary artery bypass surgery, namely, a heart positioner; medical devices and surgical instruments for use in diagnosis and surgery of cardiovascular disease; percutaneous trans-esophageal gastro-tubing kits comprising medical intubation equipment, catheter, guidewire, and connecting tube; surgical instruments and apparatus