Wound drainage apparatus; surgical apparatus and instruments for medical, dental or veterinary use; medical incision tool, namely, introducing stylet to prevent a catheter tip from bending and borehole lines to direct flow into a catheter and prevent drainage into the brain of a patient; implants consisting of artificial materials; cannulae; artificial limbs; artificial eyes; artificial teeth; medical tubing for drainage; medical devices, namely, infusion pumps for delivering measured amounts of solutions over time and infusion pumps for delivering measured amounts of solution into the bloodstream over time; medical devices, namely, connectors for: wound drainage apparatus, drainage tubes for medical purposes, medical tubing for drainage, infusion pumps for delivering measured amounts of solutions over time, cannulae, subcutaneous valves for implantation, and medical and surgical catheters; medical stopper plugs; surgical suture materials; orthopedic article and instruments for diagnostic and therapeutic use; pump chambers for medical pumps; reservoirs for medical instruments and valves; subcutaneous valves for implantation; valves for the treatment of hydrocephalus and accessories and parts therefor, namely, medical and surgical catheters, connectors, deflectors, pump chambers for medical pumps, reservoirs for medical instruments and valves, and medical stopper plugs; medical and surgical catheters; adjusting devices for medical purposes, namely, apparatus for treatment of hydrocephalus