Active middle ear implant coupled bilaterally to the round window despite bilateral implanted stapes prostheses

Abstract

After stapes surgery, patients with mixed or moderate hearing loss have limited possibilities for hearing improvement. We are reporting on a patient who underwent stapedotomy bilaterally 20 years ago and had sensorineural and mixed hearing loss. Recurrent otitis externa prevented the use of hearing aids. This patient was treated bilaterally with the Vibrant Soundbridge (Med-El, Innsbruck, Austria) successively. The Schuknecht piston stapes prostheses remained in situ. The Floating Mass Transducer (FMT; Med-El) was coupled to the round window (RW) and provided good acoustic reinforcement bilaterally. In conclusion, for patients with otosclerosis and stapes surgery, the FMT-RW coupling (Bess AG, Berlin, DE) is a safe procedure with good acoustic amplification. Laryngoscope, 2016 127:500-503, 2017.

Modified-Power-Piston: Short-Incudial-Process-Vibroplasty and Simultaneous Stapedotomy in Otosclerosis

“…“Power-stapes”-surgery performed as SDT in conjunction with simultaneous or consecutive LP- or RW-vibroplasty for otosclerotic patients were previously reported in several case reports (4,14–17). All authors concluded the intervention to be safe (4,14–17).…”

“…“Power-stapes”-surgery performed as SDT in conjunction with simultaneous or consecutive LP- or RW-vibroplasty for otosclerotic patients were previously reported in several case reports (4,14–17). All authors concluded the intervention to be safe (4,14–17). However, no case series exploring the significance of “power-stapes”-surgery in otosclerotic patients are available (4,14–16).…”

“…Although VSB is considered safe and effective in patients with MHL caused by chronic-otitis-media (COM) (10,12,13), less data are available about its application in MHL caused by otosclerosis (4,14–16). Dumon first describe a VSB implantation together with SDT in one otosclerotic patient.…”

“…The mean postoperative AC-PTA was 27.5 and 38.8 dB-HL, respectively (16). Recently, Coordes et al (14) VSB-implanted one otosclerotic patient, who underwent bilateral conventional-stapedotomy (SDT) 20 years before. Here, a RW-vibroplasty was performed instead.…”

Middle ear vibrations with SMA prosthesis. Experimental research

“…All patients have underwent a pure-tone audiometry hearing test that has determined pure-tone thresholds in the frequency range from 250 to 4000 Hz by air and bone conduction. Pure tone audiograms have been also performed after surgery reconstruction made by classical titanium ⋆ e-mail: r.rusinek@pollub.pl ⋆⋆ e-mail: marcinszym@poczta.onet.pl ⋆⋆⋆ e-mail: grzegorz.teresinski@umlub.pl prosthesis in [8], to estimate effects of different ossiculoplasty materials in [14] and to test the active middle ear implant [15]. Bony ankylosis hydroxyapatite prostheses in the middle ear have been presented in [11] but without any experimental verification.…”