A new cochlear implant electrode design for preservation of residual hearing: a temporal bone study

2009 ◽  
Vol 130 (4) ◽  
pp. 435-442 ◽  
Author(s):  
Henryk Skarzynski ◽  
Robert Podskarbi-Fayette
Keyword(s):  
Cochlear Implant ◽  
Temporal Bone ◽  
Electrode Design ◽  
Residual Hearing

scholarly journals In Situ 3D-Imaging of the Inner Ear Synapses with a Cochlear Implant

Life ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 301
Author(s):  
Kathrin Malfeld ◽  
Nina Armbrecht ◽  
Holger A. Volk ◽  
Thomas Lenarz ◽  
Verena Scheper
Keyword(s):  
Cochlear Implant ◽  
Inner Ear ◽  
Laser Scanning ◽  
3D Imaging ◽  
Laser Scanning Microscopy ◽  
Confocal Laser ◽  
Sensory Cells ◽  
Residual Hearing ◽  
Preparation Methods

In recent years sensorineural hearing loss was found to affect not exclusively, nor at first, the sensory cells of the inner ear. The sensory cells’ synapses and subsequent neurites are initially damaged. Auditory synaptopathies also play an important role in cochlear implant (CI) care, as they can lead to a loss of physiological hearing in patients with residual hearing. These auditory synaptopathies and in general the cascades of hearing pathologies have been in the focus of research in recent years with the aim to develop more targeted and individually tailored therapeutics. In the current study, a method to examine implanted inner ears of guinea pigs was developed to examine the synapse level. For this purpose, the cochlea is made transparent and scanned with the implant in situ using confocal laser scanning microscopy. Three different preparation methods were compared to enable both an overview image of the cochlea for assessing the CI position and images of the synapses on the same specimen. The best results were achieved by dissection of the bony capsule of the cochlea.

scholarly journals The Effect of Pulling Out Cochlear Implant Electrodes on Inner Ear Microstructures: A Temporal Bone Study

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Ingo Todt ◽  
Rainer O. Seidl ◽  
Arne Ernst
Keyword(s):  
Cochlear Implant ◽  
Inner Ear ◽  
Temporal Bone ◽  
Basilar Membrane ◽  
Temporal Sequence ◽  
Pull Out ◽  
Temporal Bones

The exchange of an cochlear implant or the re-positioning of an electrode have become more frequently required than a decade ago. The consequences of such procedures at a microstructural level within the cochlea are not known. It was the aim of the present study to further investigate the effects of an CI electrode pull-out. Therefore 10 freshly harvested temporal bones (TB) were histologically evaluated after a cochlear implant electrode pull-out of a perimodiolar electrode. In additional 9 TB the intrascalar movements of the CI electrode while being pulled-out were digitally analysed by video- capturing. Histologically, a disruption of the modiolar wall or the spiral osseous lamina were not observed. In one TB, a basilar membrane lifting up was found, but it could not be undoubtedly attributed to the pull-out of the electrode. When analyzing the temporal sequence of the electrode movement during the pull-out, the electrode turned in one case so that the tip elevates the basilar membrane. The pull- out of perimodiolarly placed CI electrodes does not damage the modiolar wall at a microstructural level and should be guided (e.g., forceps) to prevent a 90 o turning of the electrode tip into the direction of the basilar membrane.

Electrocochleography in Cochlear Implant Recipients With Residual Hearing

2017 ◽  
Vol 38 (3) ◽  
pp. e161-e167 ◽  
Author(s):  
Kanthaiah Koka ◽  
Aniket A. Saoji ◽  
Leonid M. Litvak
Keyword(s):  
Cochlear Implant ◽  
Residual Hearing

scholarly journals Impact of Intrascalar Electrode Location, Electrode Type, and Angular Insertion Depth on Residual Hearing in Cochlear Implant Patients

2015 ◽  
Vol 36 (8) ◽  
pp. 1343-1348 ◽  
Author(s):  
George B. Wanna ◽  
Jack H. Noble ◽  
Rene H. Gifford ◽  
Mary S. Dietrich ◽  
Alex D. Sweeney ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Residual Hearing ◽  
Insertion Depth ◽  
Electrode Location

Preservation of Residual Hearing After Cochlear Implant Surgery With Deep Insertion Electrode Arrays

2019 ◽  
Vol 40 (4) ◽  
pp. e373-e380 ◽  
Author(s):  
Cristina Sierra ◽  
Manuela Calderón ◽  
Eduardo Bárcena ◽  
Alexandra Tisaire ◽  
Eduardo Raboso
Keyword(s):  
Cochlear Implant ◽  
Residual Hearing ◽  
Electrode Arrays ◽  
Implant Surgery ◽  
Deep Insertion ◽  
Cochlear Implant Surgery

scholarly journals Acoustic to Electric Pitch Comparisons in Cochlear Implant Subjects with Residual Hearing

2006 ◽  
Vol 7 (2) ◽  
pp. 110-124 ◽  
Author(s):  
Colette Boëx ◽  
Lionel Baud ◽  
Grégoire Cosendai ◽  
Alain Sigrist ◽  
Maria-Izabel Kós ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Residual Hearing
Sign in / Sign up

Export Citation Format

Share Document