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Related Concept Videos

Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Updated: Apr 23, 2026

Robotic Cochlear Implantation for Direct Cochlear Access
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The Envoy Esteem implantable hearing system.

Sam J Marzo1, Joshua M Sappington1, Jack A Shohet2

  • 1Department of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, 2160 South First Avenue, Maywood, IL 60153, USA.

Otolaryngologic Clinics of North America
|September 27, 2014
PubMed
Summary
This summary is machine-generated.

The Envoy Esteem is a fully implantable hearing device for adults with sensorineural hearing loss. This system offers a long-lasting solution, with the sound processor replaceable via an outpatient procedure.

Keywords:
Envoy EsteemImplantable hearing aidMiddle ear implantationSensorineural hearing loss

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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Neuroscience

Background:

  • Sensorineural hearing loss affects millions, with traditional hearing aids not always suitable.
  • Implantable hearing systems offer an alternative for specific patient profiles.
  • The Envoy Esteem represents a fully implantable option for hearing restoration.

Purpose of the Study:

  • To describe the Envoy Esteem, a completely implantable hearing system.
  • To outline the indications, surgical approach, and management of this device.

Main Methods:

  • Surgical placement via intact canal wall tympanomastoidectomy with a wide facial recess approach.
  • Postoperative activation at 6-8 weeks, followed by adjustments for optimal performance.
  • Assessment of device longevity and replacement procedures.

Main Results:

  • The device is indicated for adults (18+ years) with stable moderate to severe sensorineural hearing loss and good speech discrimination.
  • Surgical approach detailed, with typical activation and adjustment periods noted.
  • Sound processor/battery lifespan of 4.5 to 9.0 years, replaceable in an outpatient setting.

Conclusions:

  • The Envoy Esteem provides a fully implantable hearing solution for selected patients.
  • The surgical technique and postoperative management are crucial for optimal outcomes.
  • The device offers a durable and manageable long-term hearing restoration option.