Description
Toennis Knife
The Toennis knife is a fine neurosurgical knife for small, precise cuts. Surgeons reach for it when a scalpel handle feels too bulky, for example when starting a dural opening.
A knife for fine work
Neurosurgery often calls for a small incision that scissors can then extend. So the knife makes that first nick with control. Its slim profile also keeps the surgeon’s view of the tip clear.
Two lengths
We sell the knife in 13 cm and 18 cm. The 13 cm version suits surface work and shallow openings. Meanwhile, the 18 cm version reaches deeper when the target sits further down.
Where it fits in a set
A cranial tray pairs knives with dura hooks and scissors. First, the hook lifts the dura. Then the knife starts the cut, and finally scissors lengthen it. The knife fits neatly into that sequence.
Choosing a length
If you work mostly at the surface, the 13 cm knife is enough. However, many surgeons buy both, since deep and shallow cases come up in the same week. We can tell you more about the blade on request.
Caring for your Toennis knife
Handle the edge carefully while you clean it. Rinse it straight after surgery, then wipe it from the spine toward the edge. Dry it fully, then guard the Toennis tip in a padded tray for sterilizing.
Toennis knife specifications
- Toennis-pattern neurosurgical knife
- Length: 13 cm or 18 cm
- Stainless steel
Ordering from Intrace USA
Workmanship faults on the knife fall under our three-year warranty. Each knife gets a close look by hand at our Atlanta office before shipping. Read the FAQ collection for order tips. We also point to ASTM F899 as the steel standard behind surgical knives and other instruments. To lift the dura first, add a Toennis dura hook. The neurosurgery product line shows everything else.
Knives are for professional use. Our care and sterilization overview notes that photos can vary and explains nickel in steel; the shipping and delivery page lists options.






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