Phase 1 Clinical Trial Results of the Envoy System: A Totally Implantable Middle Ear Device for Sensorineural Hearing Loss

Chen, Douglas A.; Backous, Douglas D.; Arriaga, Moisés A.; Garvin, Renee M.; Kobylek, Deborah; Littman, Thomas; Walgren, Sue; Lura, David

doi:10.1016/j.otohns.2004.05.027

Cited by 79 publications

(100 citation statements)

References 9 publications

(12 reference statements)

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“…Modern ossicular reconstruction techniques may effectively restore hearing to within 10 dB. Speech discrimination was markedly improved over hearingaid by 17% as per the Phase One trial of Envoy Implantable System from St. Croix Medical Inc. 4 Functional gain and speech reception thresholds were similar for the Envoy device and for the hearing aids. The technology platform of the TIHD is different from all other microphone-based hearing devices (hearing aids, other middle ear implants or cochlear implants).…”

Section: Discussionmentioning

confidence: 93%

Totally Implantable Hearing Devices

Kameswaran¹,

Raghunandhan²

2010

An International Journal of Otorhinolaryngology Clinics

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Hearing aids are the principal means of auditory rehabilitation for patients with moderate to severe sensori-neural hearing loss. Although technical improvements and modifications have improved the fidelity of conventional aids, hearing aids still have many limitations including the inherent self consciousness and social stigma attached to visible hearing aids. The recently introduced totally implantable hearing aids offer patients with hearing loss several potential advantages over conventional hearing aids. This article reviews the indications, surgical procedure, advantages and the current status of totally implantable hearing devices.

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Section: Discussionmentioning

confidence: 93%

Totally Implantable Hearing Devices

Kameswaran¹,

Raghunandhan²

2010

An International Journal of Otorhinolaryngology Clinics

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“…Modern ossicular reconstruction techniques may effectively restore hearing to within 10 dB. Speech discrimination was markedly improved over hearing-aid by 17% as per the Phase One trial of Envoy Implantable System from St. Croix Medical Inc [4]. Functional gain and speech reception thresholds were similar for the Envoy device and for the hearing aids.…”

Section: Discussionmentioning

confidence: 95%

Totally implantable hearing aid surgical technique and the first Indian experience with Envoy esteem

Murali

Krishnan

Bansal

et al. 2009

Indian J Otolaryngol Head Neck Surg

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Hearing aids are the principal means of auditory rehabilitation for patients with moderate to severe sensorineural hearing loss. Although technical improvements and modifi cations have improved the fi delity of conventional aids, hearing aids still have many limitations. Implantable hearing aids offer patients with hearing loss several potential advantages over conventional hearing aids. This presentation will highlight our fi rst experience, the indications, the procedure, the advantages and the current status of totally implantable hearing aids. . The piezoelectric implantable hearing aid functions by connecting the ossicles to an amplifi er using a piezoelectric crystal vibrator. Piezoelectric materials are bioelectric materials with coupled electrical and mechanical properties. Applying a voltage across an appropriately designed piezoelectric rod cause it to bend or lengthen, with a predictable change in defl ection based on the voltage applied. As this rod vibrates in response to the converted auditory signals, it lies in direct contact with the ossicles, thus the sound waves are transferred directly to the ossicles, which then travel along the normal auditory pathway [3]. This is the basic principle involved in the functioning of totally implantable hearing aid (TIHA). Keywords Case history Case 1A 22-year-old lady presented with a history of progressive hearing loss following an attack of chicken pox and

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“…Outro modelo de IOM totalmente implantável é o Esteem  (Envoy), no qual a captação do sinal acústico dá-se por um sensor piezoelétrico conectado diretamente à bigorna, e a estimulação é feita por um atuador também piezoelétrico ligado ao estribo. Neste caso, o papel do microfone é desempenhado pelo conjunto formado pela membrana timpânica e o transdutor piezoelétrico, o que proporciona um sinal acústico de maior qualidade devido às propriedades naturais da orelha externa e média (Barbara et al, 2009;Chen et al, 2004). No caso do Esteem, o sistema é alimentado por baterias cuja reposição deve ser feita a cada 5 a 9 anos, dependendo do modelo e variando de um paciente para outro, através de cirurgia ambulatorial (Green, 2011).…”

Section: Implantes De Orelha Médiaunclassified

Implantes cocleares: aspectos tecnológicos e papel socioeconômico

Tefili

Barrault

Ferreira³

et al. 2013

RBEB

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Resumo Introdução: O grande número de defi cientes auditivos faz da perda auditiva um sério problema social, econômico e de saúde pública. Próteses auditivas e implantes cocleares representam os principais dispositivos utilizados como paliativos por pessoas com defi ciência auditiva, sendo que os implantes cocleares são muitas vezes a única opção nos casos de defi ciência auditiva severa e profunda. Nesse artigo discute-se de maneira geral os diferentes aspectos envolvendo implantes cocleares, tanto de âmbito tecnológico como seu papel socioeconômico. Métodos: Baseado em dados do SUS, IBGE e outras fontes, um levantamento qualitativo e quantitativo é feito pela primeira vez especifi camente para a população brasileira. O artigo discute ainda o estado da arte das tecnologias envolvidas no implante coclear, com base em literatura científi ca e informações de fabricantes, bem como as perspectivas para as próximas gerações de implantes cocleares. Conclusão: Há potencial e demanda para evoluções nos implantes atuais. A implantação precoce é benéfi ca para pacientes e sociedade, compensando os custos econômica e socialmente. No entanto, as políticas públicas de reabilitação necessitam se adequar para atender com efi cácia à crescente população afetada pela defi ciência auditiva.Palavras-chave Implante coclear, Processamento de sinais, Defi ciência auditiva severa e profunda, Impacto socioeconômico. Cochlear implants: technological aspects and socioeconomic role

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Phase 1 Clinical Trial Results of the Envoy System: A Totally Implantable Middle Ear Device for Sensorineural Hearing Loss

Abstract: B-2.

Cited by 79 publications

References 9 publications

Totally Implantable Hearing Devices

Totally Implantable Hearing Devices

Totally implantable hearing aid surgical technique and the first Indian experience with Envoy esteem

Implantes cocleares: aspectos tecnológicos e papel socioeconômico

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