Surgical implants comprising artificial material; [ surgical implants comprising artificial material for orthopedic surgery and spinal surgery and associated surgical instruments therefor; ] tissue regeneration matrices comprising artificial material, namely, dermal, dura mater, and neural [, orthopedic, and bone ] regeneration matrices; artificial skin for medical purposes; surgical devices for cranial treatment; patient biological parameter sensors and monitors, namely, apparatus for measuring, determining, and/or displaying the oxygen level, fluid pressure, and/or temperature in the living human body for medical purposes; hydrocephalus valves; external cerebrospinal fluid drainage devices; catheters; ultrasound surgical apparatus; radio-surgical treatment apparatus, namely, stereotactic apparatus and integrated stereotactic surgical treatment planning apparatus; patient positioning and stabilizing apparatus, neurosurgical operating table attachments and adaptors for brain surgeries, epilepsy electrodes; cortical stimulators; surgical illumination and recording devices, namely, surgical headlights and video camera for surgeries; light sources for surgical headlights; xenon light sources for surgical headlights; surgical apparatus and instruments for use in general surgery, neurosurgery, orthopedic surgery, spinal surgery, microsurgery, thoracic surgery, cardiovascular surgery, dermatological surgery, oral surgery, podiatric surgery, obstetrical and gynecological surgery, plastic surgery, gastrointestinal surgery, reconstructive surgery, endoscopic surgery, ophthalmic surgery, ear and nasal surgery, throat and laryngeal surgery, and rectal and genitor-urinary surgery; hand held power surgical instruments and hand held non-power surgical instruments; medical instruments for dental use; pain management trays, namely, trays specially designed for transporting and holding pharmaceuticals