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New Developments in Bone-conduction Hearing Implants a Review

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Review

doi: 10.2147/MDER.S39691. eCollection 2015.

New developments in bone-conduction hearing implants: a review

Affiliations

  • PMID: 25653565
  • PMCID: PMC4303401
  • DOI: 10.2147/MDER.S39691

Gratuitous PMC article

Review

New developments in os-conduction hearing implants: a review

Sabine Reinfeldt  et al. Med Devices (Auckl). .

Complimentary PMC commodity

Abstruse

The different kinds of os-conduction devices (BCDs) available for hearing rehabilitation are growing. In this paper, all BCDs currently available or in clinical trials volition be described in categories according to their principles. BCDs that vibrate the bone via the pare are referred to as skin-drive devices, and are divided into conventional devices, which are attached with softbands, for example, and passive transcutaneous devices, which accept implanted magnets. BCDs that directly stimulate the bone are referred to every bit direct-bulldoze devices, and are farther divided into percutaneous and agile transcutaneous devices; the latter have implanted transducers straight stimulating the bone nether intact skin. The percutaneous directly-drive device is known equally a bone-anchored hearing aid, which is the BCD that has the largest part of the market today. Because of some issues associated with the percutaneous implant, and to some extent because of esthetics, more transcutaneous solutions with intact skin are being developed today, both in the skin-drive and in the directly-drive category. Challenges in developing transcutaneous BCDs are mostly to do with ability, attachment, invasiveness, and magnetic resonance imaging compatibility. In the time to come, the authors assume that the existing percutaneous directly-bulldoze BCD volition be retained equally an important rehabilitation alternative, while the transcutaneous solutions will increment their part of the market, specially for patients with os-conduction thresholds amend than 35 dB HL (hearing level). Furthermore, the active transcutaneous direct-bulldoze BCDs appear to be the near promising systems, just to found more detailed inclusion criteria, and potential benefits and drawbacks, more all-encompassing clinical studies are needed.

Keywords: active; os-conduction device; implantable; passive; percutaneous; transcutaneous.

Figures

Figure 1
Figure 1

Categorization of os-conduction devices. Abbreviations: BAHA, bone-anchored hearing assist; BCI, bone-conduction implant.

Figure 2
Figure 2

Conventional skin-drive bone-conduction devices, attached with (A) a steel spring headband, and (B) with frames for spectacles. Notation: Images provided courtesy of (A) Starkey Hearing Technologies, (B) bruckhoff hannover gmbh.

Figure 3
Figure 3

Sophono®, a passive transcutaneous skin-drive bone-conduction device. Note: Image provided courtesy of Sophono®.

Figure 4
Figure 4

Baha® Attract, a passive transcutaneous skin-drive bone-conduction device. Notation: Image provided courtesy of Cochlear Bone Anchored Solutions AB.

Figure 5
Figure five

Bone-anchored hearing aid, a percutaneous direct-drive bone-conduction device. Notes: (A) Ponto (Oticon Medical, Askim, Sweden); and (B) Baha® BP100 (Cochlear Os Anchored Solutions AB, Mölnlycke, Sweden). Images provided courtesy of Oticon Medical (A) and Cochlear Bone Anchored Solutions AB (B).

Figure 6
Figure 6

Bone-conduction implant, an active transcutaneous direct-drive bone-conduction device.

Figure 7
Effigy 7

Bonebridge™, an active transcutaneous straight-bulldoze bone-conduction device. Annotation: Image provided courtesy of MED-EL.

Figure 8
Figure 8

SoundBite™, an in-the-mouth bone-conduction device with implant for tooth zipper and behind-the-ear sound processor. Notation: Epitome provided courtesy of Sonitus Medical.

Figure 9
Figure 9

Estimated maximum recommended preoperative bone-conduction thresholds, which include a "grayness" zone depending on if an aided PTA of at least 30 or 35 dB HL is met. Abbreviations: BCI, os-conduction implant; HL, hearing level; max, maximum; preop, preoperative; PTA, pure-tone average; PTAiv, four-frequency averages of PTA; PTAbc, pure-tone average for bone-conduction.

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Source: https://pubmed.ncbi.nlm.nih.gov/25653565/

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