Piezoelectric Round Window Osteoplasty for Vibrant Soundbridge Implant

Cuda, Domenico; Murri, Alessandra; Tinelli, Nicoletta

doi:10.1097/mao.0b013e3181b04d4d

Cited by 31 publications

(23 citation statements)

References 16 publications

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“…Generally, two curves in Figure 6(C) had the same shape and were parallel across frequencies, suggesting that the BM response to round window stimulation was essentially similar in nature to that of forward or acoustic stimulation in the ear canal. This finding supports the clinical outcomes reported in the literature (Colletti et al 2006;Cuda et al 2009;Martin et al 2009). …”

Section: Comparison Between Forward and Reverse Drivessupporting

confidence: 91%

“…According to their results, improvements in postoperative aided thresholds were achieved for all patients. Improved pure-tone threshold or speech recognition scores after FMT stimulation on the RWM have also been reported in other clinical studies (Cuda et al 2009;Linder et al 2009;Martin et al 2009;Streitberger et al 2009;Rajan et al 2011).…”

Section: Introductionsupporting

confidence: 66%

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Measurement of Basilar Membrane Motion During Round Window Stimulation in Guinea Pigs

Chen

Guan

Zhang

et al. 2014

JARO

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Driving the cochlea in reverse via the round window membrane (RWM) is an alternative treatment option for the hearing rehabilitation of a nonfunctional or malformed middle ear. However, cochlear stimulation from the RWM side is not a normal sound transmission pathway. The basilar membrane (BM) motion elicited by mechanical stimulation of the RWM is unknown. In this study, the BM movement at the basal turn was investigated in both reverse via RWM drive and acoustic stimulation in the ear canal or forward drive in postmortem isolated temporal bone preparations of guinea pigs. During reverse drive, a magnetcoil was coupled on RWM, and the BM vibration at the basal turn and the movement of the incus tip were measured with laser Doppler vibrometry. During forward drive, the vibration of the incus tip induced by sound pressure in the ear canal resulted in BM vibration and the BM movement at the same location as that in the reverse stimulation was measured. The displacement ratio of the BM to RWM in reverse drive and the ratio of the BM to incus in forward drive were compared. The results demonstrated that the BM response measured in both situations was similar in nature between forward and reverse drives. This study provides new knowledge for an understanding of BM movement induced by reverse drive via the RWM stimulation.

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Section: Comparison Between Forward and Reverse Drivessupporting

confidence: 91%

Section: Introductionsupporting

confidence: 66%

Measurement of Basilar Membrane Motion During Round Window Stimulation in Guinea Pigs

Chen

Guan

Zhang

et al. 2014

JARO

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“…Some authors have found variable increases in thresholds, from various settings of footplate fixation (experimental, otosclerosis, and congenital), on the order of 20 to 50 dB (45Y47). Clinical and experimental reports (20,22,25,29,30,48) have documented that RWM application of an AMEI can effectively drive the inner ear in the presence of stapes fixation, although the pathophysiology of sound transmission in such cases remains unclear (49,50).…”

Section: Rationale For Driving the Stapesmentioning

confidence: 98%

Active Middle Ear Implant Application in Case of Stapes Fixation

Devèze¹,

Koka²,

Tringali³

et al. 2010

Otology &Amp; Neurotology

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“…However, current publications [Baumgartner et al, 2010;Boeheim et al, 2010;Colletti et al, 2006;Colletti et al, 2009;Cuda et al, 2009;Frenzel et al, 2009;Kiefer and Staudenmaier, 2010;Linder et al, 2009;Streitberger et al, 2009;Wollenberg et al, 2007] reveal a considerable variability regarding the degree of hearing restoration. To approach this issue, different methods of coupling an actuator to the RW membrane have been investigated in human temporal bone experiments [Arnold et al, 2010;Nakajima et al, 2010].…”

Section: Introductionmentioning

confidence: 99%

Conditions for Highly Efficient and Reproducible Round-Window Stimulation in Humans

Schraven¹,

Hirt²,

Goll³

et al. 2011

Audiol Neurotol

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Round-window stimulation is a new clinical approach for the application of active middle-ear implants. To investigate factors influencing the efficiency of round-window stimulation, experiments in 6 human temporal bones were performed with different actuator geometries and coupling conditions. The experiments show that the amplitude ratio between stapes and round-window actuator vibration is most efficient when using a 1.0-mm diameter rod with a 30° inclined tip geometry and an attached silicone pad. In this case, the amplitude ratio is 0.34 for frequencies up to 1.5 kHz and 0.27 for frequencies up to 20 kHz, with a standard deviation of only 4–6 dB at most frequencies. The analysis of data presented here and in a companion paper suggests that control of proper round-window membrane pretension as well as the inclined tip geometry are the major requirements for maximal performance.

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Piezoelectric Round Window Osteoplasty for Vibrant Soundbridge Implant

Cited by 31 publications

References 16 publications

Measurement of Basilar Membrane Motion During Round Window Stimulation in Guinea Pigs

Measurement of Basilar Membrane Motion During Round Window Stimulation in Guinea Pigs

Active Middle Ear Implant Application in Case of Stapes Fixation

Conditions for Highly Efficient and Reproducible Round-Window Stimulation in Humans

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