Calvian Endo-pen [Neurosurgery Wiki]

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====== Calvian Endo-pen ======

Over the past few years [[bipolar]] [[electrocoagulation]] [[technique]]s in [[neurosurgery]] have been continually improving. However, limited access during [[endoscopic endonasal transsphenoidal surgery]] (EETS) for [[central skull base]] pathologies and the requirement of very precise [[coagulation]] in that dedicated anatomical area requires further refinement of bipolar coagulation instruments. 

Gerlach et al., describe the [[experience]] (effectiveness of coagulation, intraoperative handling, and the use as a dissecting tool) with a new type of coagulation forceps, the Calvian endo-pen ([[Sutter Medizintechnik]], [[Freiburg]], [[Germany]]) during EETS.

{{ ::calvian_endo-pen.jpg?400|}}

From June to August 2015, 12 patients with central skull base lesions (9 with a [[pituitary neuroendocrine tumor]] and 1 each with [[epidermoid]], [[hemangioma]], and [[juvenile angiofibroma]]) were operated on with the Calvian endo-pen.

The application of the Calvian endo-pen was feasible in all cases. The angled thin tips proved to be very effective and precise for [[soft tissue]] coagulation to achieve [[hemostasis]]. Even very small vessels could be occluded selectively. It was also helpful for outward dissection in separating normal from tumor tissue.

The use of the Calvian endo-pen is safe and effective during EETS for central skull base pathologies. Its ease in intraoperative handling (maneuverability, cleaning) and precise coagulation makes it a promising instrument for EETS
((Gerlach R, Rosahl S, Kellner G. Calvian Endo-pen: New Coagulation Forceps for 
Endoscopic Endonasal Transsphenoidal Surgery. J Neurol Surg A Cent Eur Neurosurg.
2018 Jul 6. doi: 10.1055/s-0038-1655731. [Epub ahead of print] PubMed PMID:
29980157.
)).

===== Videos =====

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