A nonpowered neurosurgical instrument is a hand instrument or an accessory to a hand instrument used during neurosurgical procedures to cut, hold, or manipulate tissue. It includes specialized chisels, osteotomes, curettes, dissectors, elevators, forceps, gouges, hooks, surgical knives, rasps, scissors, separators, spatulas, spoons, blades, blade holders, blade breakers, probes, etc.
A hand-held manual surgical instrument designed to create a subcutaneous tunnel (artificial passageway) between percutaneous entry and exit incisions for the subcutaneous placement of a device (e.g., catheter for medication administration, shunt). It is available in a variety of forms and may be: 1) a luminal sheath with a removable inner obturator, intended for co-axial device introduction, followed by sheath removal; or 2) a non-luminal device intended to either lead or pull the device through subcutaneous tissue. It is not intended for tunnelling through deep tissues and is not a dedicated pacing or defibrillation lead tunneller. This is a single-use device.