Functional Results of Vibrant Soundbridge Middle Ear Implants in Conductive and Mixed Hearing Losses

2011 ◽  
Vol 16 (6) ◽  
pp. 381-387 ◽  
Author(s):  
Daniele Bernardeschi ◽  
Caroline Hoffman ◽  
Tarek Benchaa ◽  
Samia Labassi ◽  
Michel Beliaeff ◽  
...  
Keyword(s):  
Middle Ear ◽  
Functional Results ◽  
Vibrant Soundbridge ◽  
Middle Ear Implants

scholarly journals Gain and Maximum Output of Two Electromagnetic Middle Ear Implants: Are Real Ear Measurements Helpful?

2004 ◽  
Vol 15 (03) ◽  
pp. 249-257 ◽  
Author(s):  
Ad Snik ◽  
John Noten ◽  
Cor Cremers
Keyword(s):  
Middle Ear ◽  
Maximum Output ◽  
Input Output ◽  
Vibrant Soundbridge ◽  
Ear Canal ◽  
Target Values ◽  
Middle Ear Implants ◽  
The Mean ◽  
Output Characteristics ◽  
Functional Gain

We compared the output of two electronic middle ear implants: the Otologics MET™ device and the Vibrant Soundbridge™ device. Both devices were programmed in the linear amplification mode. Aided minus unaided sound pressure levels recorded in the ear canal (objective gain) were compared to unaided minus aided soundfield thresholds (functional gain) in 13 patients with severe sensorineural hearing loss. In addition, input/output characteristics were studied with the help of ear canal measurements. Objective gain was consistently lower than functional gain, with wide variation between patients and frequencies. Using input/output data measured in the ear canal in combination with functional gain data, the mean maximum output of the two devices was estimated, expressed in dB SPL. In comparison to NAL-R target values, (functional) gain was adequate; however, the maximum output was low, especially for the Vibrant Soundbridge device.

scholarly journals Design Study of a Round Window Piezoelectric Transducer for Active Middle Ear Implants

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 946
Author(s):  
Dong Ho Shin
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Middle Ear ◽  
Piezoelectric Transducer ◽  
Round Window ◽  
Piezoelectric Element ◽  
Sensorineural Hearing ◽  
Flat Band ◽  
Middle Ear Implants ◽  
Output Characteristics

This report describes the design of a new piezoelectric transducer for round window (RW)-driven middle ear implants. The transducer consists of a piezoelectric element, gold-coated copper bellows, silicone elastomer (polydimethylsiloxane, PDMS), metal cylinder (tungsten), and titanium housing. The piezoelectric element is fixed to the titanium housing and mechanical resonance is generated by the interaction of the bellows, PDMS, and tungsten cylinder. The dimensions of PDMS and the tungsten cylinder with output characteristics suitable for compensation of sensorineural hearing loss were derived by mechanical vibrational analysis (equivalent mechanical model and finite element analysis (FEA)). Based on the results of FEA, the RW piezoelectric transducer was implemented, and bench tests were performed under no-load conditions to confirm the output characteristics. The transducer generates an average displacement of 219.6 nm in the flat band (0.1–1 kHz); the resonance frequency is 2.3 kHz. To evaluate the output characteristics, the response was compared to that of an earlier transducer. When driven by the same voltage (6 Vp), the flat band displacement averaged 30 nm larger than that of the other transducer, and no anti-resonance was noted. Therefore, we expect that the new transducer can serve as an output device for hearing aids, and that it will improve speech recognition and treat high-frequency sensorineural hearing loss more effectively.

Bone Resorption Induced by Middle-Ear Implants

1986 ◽  
Vol 112 (6) ◽  
pp. 635-641 ◽  
Author(s):  
M. D. McGinn ◽  
R. A. Chole ◽  
S. P. Tinling
Keyword(s):  
Bone Resorption ◽  
Middle Ear ◽  
Middle Ear Implants

Hydroxylapatite Ossicular Replacement Prostheses: A Four-Year Experience

1992 ◽  
Vol 106 (3) ◽  
pp. 261-269 ◽  
Author(s):  
Robert A. Goldenberg
Keyword(s):  
Surgical Technique ◽  
Middle Ear ◽  
Control Group ◽  
Hearing Results ◽  
Extrusion Rate ◽  
Hearing Result ◽  
Ossicular Replacement ◽  
Middle Ear Implants

Between 1987 and 1991, I have used 215 hydroxylapatite middle ear implants, in various styles, for hearing reconstruction. The first such implants were composed entirely of hydroxylapatite. Because of intraoperative difficulties in shaping and trimming these prostheses, hybrid prostheses using Plasti-Pore were developed. For each of four implant designs (incus, incus-stapes, PORP, and TORP), the head is constructed from hydroxylapatite and the shaft from Plasti-Pore. Extrusion rate for the hybrid prostheses is low (4.3%). Hearing results from 47 patients with the hybrid hydroxylapatite prostheses, 140 patients with total hydroxylapatite prostheses, and 75 control group patients with homograft bone or Plasti-Pore prostheses were compared. A “successful” hearing result was achieved in 51.1%, 51.4%, and 60.0% of the three groups, respectively. Surgical technique for use of the new hybrid hydroxylapatite prostheses is described.

Middle Ear Implants

Hearing ◽  
2015 ◽  
pp. 107-112
Author(s):  
Neil Donnelly
Keyword(s):  
Middle Ear ◽  
Middle Ear Implants
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