کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4106988 1605411 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cochlear anatomy study used to design surgical instruments for cochlear implants with two bundles of electrodes in ossified cochleas
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری های گوش و جراحی پلاستیک صورت
پیش نمایش صفحه اول مقاله
Cochlear anatomy study used to design surgical instruments for cochlear implants with two bundles of electrodes in ossified cochleas
چکیده انگلیسی

SummaryCochlear ossification, mainly secondary to meningitis, prevents the complete conventional cochlear implant insertion. Implants with two electrode bundles shorter than the conventional ones were specifically developed for ossified cochleas. However, during surgery there is a high risk of damaging the internal carotid artery (ICA). Therefore, measuring cochleostomy depth in order to insert the two electrode bundles would greatly increase the procedure's safety.Aims1) Find the distances between cochleostomies and ICA in cadaver temporal bones. 2) Design an instrument that can be used in cochlear implant surgery to introduce an implant with two bundles of electrodes.Study DesignExperimental prospective.Materials and MethodsIn 21 temporal bones from cadavers we performed: 1) canal wall down mastoidectomy; 2) cochleostomy in the cochlear basal and middle turns; 3) ICA identification; 4) Length determination between the cochleostomies and the artery.Resultsthe average distance ± standard deviation obtained for the upper tunnel was of 8.2 ± 1.1 mm and for the lower tunnel it was of 8.1± 1.3 mm. The shortest distance found was of 6.5 mm for the upper tunnel and 6.0 mm for the lower tunnel.ConclusionDespite the values calculated, we concluded that the best value to be considered in creating a surgical instrument are the minimum lengths obtained for each one of the cochlear turns, because this is the safest way to avoid damaging the ICA, that can be fatal.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brazilian Journal of Otorhinolaryngology - Volume 74, Issue 2, March–April 2008, Pages 194–199
نویسندگان
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