Technical design of a new bone conduction implant (BCI) system

Taghavi, Hamidreza; Hȧkansson, Bo; Reinfeldt, Sabine; Eeg-Olofsson, Måns; Jansson, Karl-Johan Fredén; Håkansson, Emil; Nasri, B.

doi:10.3109/14992027.2015.1051665

Cited by 22 publications

(21 citation statements)

References 39 publications

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“…No automatic features were activated but modest compression for high level sounds was used in some patients, decided in the interaction between the patient and the operator. A more detailed description of the digital signal processor used can be found in Taghavi et al (2015). All patients were provided with up to four programmes with different frequency characteristics to be tested in various listening situations.…”

Section: Fitting Of the Audio Processormentioning

confidence: 99%

“…However, the present BCI design is just the first generation of direct bone drive transcutaneous induction devices and future power models may be expected to offer additional maximum output and other prescription rules allowing for a more sophisticated use of compression. Theoretically, 6 dB increased maximum force level output may be achieved by using a full bridge instead of the present half bridge power stage as used today (Taghavi et al 2015).…”

Section: Effectivenessmentioning

confidence: 99%

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The bone conduction implant – a review and 1-year follow-up

Hȧkansson

Reinfeldt

Persson

et al. 2019

International Journal of Audiology

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Objective: The objective of this study is to evaluate its safety and effectiveness of the bone conduction implant (BCI) having an implanted transducer and to review similar bone conduction devices. Design: This is a consecutive prospective case series study where the patients were evaluated after 1, 3, 6 and 12 months. Outcome measures were focussed on intraoperative and postoperative safety, the effectiveness of the device in terms of audiological performance and patient's experience. Study sample: Sixteen patients with average age of 40.2 (range 18-74) years have been included. Thirteen patients were operated in Gothenburg and three in Stockholm. Results: It was found that the procedure for installing the BCI is safe and the transmission condition was stable over the follow-up time. No serious adverse events or severe adverse device effects occurred. The hearing sensitivity, speech in noise and the self-assessment as compared with the unaided condition improved significantly with the BCI. These patients also performed similar or better than with a conventional bone conduction reference device on a softband. Conclusions: In summary, it was found that the BCI can provide a safe and effective hearing rehabilitation alternative for patients with mild-to-moderate conductive or mixed hearing impairments.

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Section: Fitting Of the Audio Processormentioning

confidence: 99%

Section: Effectivenessmentioning

confidence: 99%

The bone conduction implant – a review and 1-year follow-up

Hȧkansson

Reinfeldt

Persson

et al. 2019

International Journal of Audiology

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“…The BCI Best Transducer (Oticon Company, Figure 17) consists of an external audio-processor and the implant called Bridging Bone Conductor, a magnet, the receiver coil, and the transducer. The units communicate via an inductive connection through the intact skin [128], [129]. Advantages: MRI compatible to 1.5 T.…”

Section: Active Transcutaneous Systems 4221 Oticon Bci Best Transdmentioning

confidence: 99%

Implantierbare Hörsysteme

Tisch

2017

Laryngo-Rhino-Otol

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Combined hearing loss is an essential indication for implantable hearing systems. Depending on the bone conduction threshold, various options are available: Patients with mild sensorineural deafness usually benefit from transcutaneous BCI, while percutaneous BCI systems are recommended also for moderate hearing loss. For combined hearing loss with moderate and high-grade cochlear hearing loss, active middle ear implants are recommended. For patients with incompatibilities or middle ear surgery, implants are a valuable and proven addition to the therapeutic options.

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“…The bone conduction implant (BCI) is an active transcutaneous BCD and consists of an implanted part including the receiver coil, the retention magnet and the transducer, and an audio processor, which is retained on the skin by magnetic force [Hakansson et al, 2010;Taghavi et al, 2015] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Three-Year Follow-Up with the Bone Conduction Implant

et al. 2020

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Background: The bone conduction implant (BCI) is an active transcutaneous bone conduction device where the transducer has direct contact to the bone, and the skin is intact. Sixteen patients have been implanted with the BCI with a planned follow-up of 5 years. This study reports on hearing, quality of life, and objective measures up to 36 months of follow-up in 10 patients. Method: Repeated measures were performed at fitting and after 1, 3, 6, 12, and 36 months including sound field warble tone thresholds, speech recognition thresholds in quiet, speech recognition score in noise, and speech-to-noise thresholds for 50% correct words with adaptive noise. Three quality of life questionnaires were used to capture the benefit from the intervention, appreciation from different listening situations, and the ability to interact with other people when using the BCI. The results were compared to the unaided situation and a Ponto Pro Power on a soft band. The implant functionality was measured by nasal sound pressure, and the retention force from the audio processor against the skin was measured using a specially designed audio processor and a force gauge. Results: Audiometry and quality of life questionnaires using the BCI or the Ponto Pro Power on a soft band were significantly improved compared to the unaided situation and the results were statistically supported. There was generally no significant difference between the two devices. The nasal sound pressure remained stable over the study period and the force on the skin from the audio processor was 0.71 ± 0.22 N (mean ± 1 SD). Conclusion: The BCI improves the hearing ability for tones and speech perception in quiet and in noise for the indicated patients. The results are stable over a 3-year period, and the patients subjectively report a beneficial experience from using the BCI. The transducer performance and contact to the bone is unchanged over time, and the skin area under the audio processor remains without complications during the 3-year follow-up.

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Technical design of a new bone conduction implant (BCI) system

Abstract: This study shows that the BCI is a robust design that gives a sufficiently high output and an excellent sound quality for the hearing rehabilitation of indicated patients.

Cited by 22 publications

References 39 publications

The bone conduction implant – a review and 1-year follow-up

The bone conduction implant – a review and 1-year follow-up

Implantierbare Hörsysteme

Three-Year Follow-Up with the Bone Conduction Implant

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