Medical apparatus and instruments, namely, port access needle, port access infusion instruments for administering drugs, multiple blood luer adapter, intermittent injection site, needles for medical purposes, solution administration instruments, blood collection bag for medical waste for medical purposes, surgical knives used for endoscopic submucosal dissection, protector 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 in the nature of endoscopic equipment for medical purposes, catheters for use in arterial perfusion, central venous catheters, 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 tubes used for retrograde transhepatic biliary drainage, medical intubation equipment in the nature of 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 in the nature of a heart positioner, medical devices and surgical instruments for use in diagnosis and surgery of cardiovascular disease, urinals for medical purposes being vessels; medical apparatus and instruments, namely, percutaneous trans esophageal gastro-tubing kits comprising medical intubation equipment, catheter, medical guidewire, and connecting medical tube; medical apparatus and instruments, namely, steerable type of microcatheter for the embolization treatment, surgical instruments and apparatus