Navigated control: Ein neues konzept für die computer-assistierte-HNO- chirurgie

Translated title of the contribution: Navigated control: A new concept in computer assisted ENT-surgery

Gero Strauß, K. Koulechov, R. Richter, A. Dietz, J. Meixensberger, C. Trantakis, T. Lüth

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


This work conceived and evaluates a mechatronical system for ORL-surgery by example of a Shaver for Functional Endoscopic Sinus Surgery controled by navigation. The Shaver is automatically on/off-regulated depending on the current position in relation to the planned working space. This working space is defined on the basis of the individual CT data. Within this area the Shaver reacts to the signal of the surgeon (foot pedal). If the Shaver leaves the working space, an interruption of the drive regulation to the Shaver takes place. The evaluation of the planning software based on 32 patient CT-data sets. The registration accuracy in a anatomical model was examined on 451 measurements of endonasal attached titanium screws. The conversions of the working space were evaluated at 5 different technical models. The average time for segmenting the working space was found at 4.23 minutes per case. An average registration accuracy of the Shaver of 1.08 mm resulted. The pre-defined cavity was to be cleared away without restrictions. The preoperative determined workspace was converted by 3.1 mm over all levels. The study proves the feasibility of a mechatronical assistant system by the example of the navigate-controlled Shaver in paranasal sinus surgery. Contrary to conventional CAS solutions redundancy and cognitive discharge of the surgeon are considered in this conception. We see numerous applications according to the explained principle for power-control of instruments in ORL-surgery in the future such as drilling, high frequency surgery or laser.

Translated title of the contributionNavigated control: A new concept in computer assisted ENT-surgery
Original languageGerman
Pages (from-to)567-576
Number of pages10
JournalLaryngo- Rhino- Otologie
Issue number8
StatePublished - Aug 2005
Externally publishedYes


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