A Design of the Bone Conduction Ultrasonic Hearing Device

2014 ◽  
Vol 1030-1032 ◽  
pp. 2330-2333
Author(s):  
Hui Jun Wang ◽  
Guan Li
Keyword(s):  
Hearing Aids ◽  
Bone Conduction ◽  
Processing Unit ◽  
Ear Canal ◽  
Auditory Nerves ◽  
Hearing Devices ◽  
Hearing Device ◽  
Gas Conduction ◽  
The Voice ◽  
High Application

In view of the fact that the traditional gas conduction hearing AIDS does not function to the patients with ear canal jams, this paper introduces a kind of ultrasonic hearing devices. Through the ultrasonic voice signals sent by the bone conduction modulation, the hearing-impaired patients can get a certain degree of hearing. The device, with TM320VC5410 as signal processing unit, modulates the voice signals with ultrasonic and transmit the signals through the bone conduction headphone to human auditory nerves. The experimental results show that the hearing devices can help patients with severe deafness recognize sound and voice. As a result, it is of high application value.

scholarly journals Review of Bone Conduction Hearing Devices

2021 ◽  
Vol 11 (2) ◽  
pp. 207-219
Author(s):  
Susan E. Ellsperman ◽  
Emily M. Nairn ◽  
Emily Z. Stucken
Keyword(s):  
Hearing Aid ◽  
Bone Conduction ◽  
Sound Transmission ◽  
Ear Canal ◽  
Hearing Devices ◽  
Bone Conduction Hearing ◽  
Single Sided Deafness

Bone conduction is an efficient pathway of sound transmission which can be harnessed to provide hearing amplification. Bone conduction hearing devices may be indicated when ear canal pathology precludes the use of a conventional hearing aid, as well as in cases of single-sided deafness. Several different technologies exist which transmit sound via bone conduction. Here, we will review the physiology of bone conduction, the indications for bone conduction amplification, and the specifics of currently available devices.

The Bonebridge semi-implantable bone conduction hearing device: experience in an Asian patient

2013 ◽  
Vol 127 (12) ◽  
pp. 1214-1221 ◽  
Author(s):  
W S S Tsang ◽  
J K Y Yu ◽  
K S S Bhatia ◽  
T K C Wong ◽  
M C F Tong
Keyword(s):  
Wound Infection ◽  
Hearing Aids ◽  
Bone Conduction ◽  
Sound Quality ◽  
Asian Patient ◽  
Impaired Hearing ◽  
Hearing Device ◽  
Bone Conduction Hearing ◽  
Bone Conduction Device

AbstractFor over three decades, bone conduction hearing aids have been changing the lives of patients with impaired hearing. The size, appearance and fitting discomfort of early generations of bone conduction hearing aids made them unpopular. The advent of bone-anchored hearing aids in the 1970s offered patients improved sound quality and fitting comfort, due to the application of osseointegration. However, the issue of post-operative peri-abutment pin tract wound infection persisted. The Bonebridge system incorporates the first active bone conduction device, and aims to resolve peri-abutment issues. Implantation of this system in an Asian patient is presented.

scholarly journals A Tutorial on Implantable Hearing Amplification Options for Adults with Unilateral Microtia and Atresia

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Joannie Ka Yin Yu ◽  
Lena Lai Nar Wong ◽  
Willis Sung Shan Tsang ◽  
Michael Chi Fai Tong
Keyword(s):  
Bone Conduction ◽  
Clinical Decision ◽  
Radiological Findings ◽  
Middle Ear Implant ◽  
Speech Understanding In Noise ◽  
Hearing Devices ◽  
Bone Anchored Hearing Aid ◽  
Hearing Device ◽  
Selection Of

Background.Patients with unilateral atresia and microtia encounter problems in sound localization and speech understanding in noise. Although there are four implantable hearing devices available, there is little discussion and evidence on the application of these devices on patients with unilateral atresia and microtia problems.Objective.This paper will review the details of these four implantable hearing devices for the treatment of unilateral atresia. They are percuteaneous osseointegrated bone anchored hearing aid, Vibrant Soundbridge middle ear implant, Bonebridge bone conduction system, and Carina fully implantable hearing device.Methods.Four implantable hearing devices were reviewed and compared. The clinical decision process that led to the recommendation of a device was illustrated by using a case study.Conclusions.The selection of appropriate implantable hearing devices should be based on various factors, including radiological findings and patient preferences, possible surgical complications, whether the device is Food and Drug Administration- (FDA-)/CE-approved, and the finances. To ensure the accurate evaluation of candidacy and outcomes, the evaluation methods should be adapted to suite the type of hearing device.

Auditory Outcomes with Hearing Rehabilitation in Children with Unilateral Hearing Loss: A Systematic Review

2017 ◽  
Vol 157 (4) ◽  
pp. 565-571 ◽  
Author(s):  
Swathi Appachi ◽  
Jessica. L. Specht ◽  
Nikhila Raol ◽  
Judith E. C. Lieu ◽  
Michael S. Cohen ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Speech Recognition ◽  
Sound Localization ◽  
Hearing Aids ◽  
Bone Conduction ◽  
Unilateral Hearing Loss ◽  
Hearing Rehabilitation ◽  
Hearing Devices ◽  
Bone Conduction Hearing ◽  
Speech Recognition In Noise

Objective Options for management of unilateral hearing loss (UHL) in children include conventional hearing aids, bone-conduction hearing devices, contralateral routing of signal (CROS) aids, and frequency-modulating (FM) systems. The objective of this study was to systematically review the current literature to characterize auditory outcomes of hearing rehabilitation options in UHL. Data Sources PubMed, EMBASE, Medline, CINAHL, and Cochrane Library were searched from inception to January 2016. Manual searches of bibliographies were also performed. Review Methods Studies analyzing auditory outcomes of hearing amplification in children with UHL were included. Outcome measures included functional and objective auditory results. Two independent reviewers evaluated each abstract and article. Results Of the 249 articles identified, 12 met inclusion criteria. Seven articles solely focused on outcomes with bone-conduction hearing devices. Outcomes favored improved pure-tone averages, speech recognition thresholds, and sound localization in implanted patients. Five studies focused on FM systems, conventional hearing aids, or CROS hearing aids. Limited data are available but suggest a trend toward improvement in speech perception with hearing aids. FM systems were shown to have the most benefit for speech recognition in noise. Studies evaluating CROS hearing aids demonstrated variable outcomes. Conclusions Data evaluating functional and objective auditory measures following hearing amplification in children with UHL are limited. Most studies do suggest improvement in speech perception, speech recognition in noise, and sound localization with a hearing rehabilitation device.

Experiences with Implantable Hearing Devices and a Presentation of a New Device

1986 ◽  
Vol 95 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Jack Hough ◽  
Jack Vernon ◽  
Kenneth Dormer ◽  
Bob Johnson ◽  
Tom Himelick
Keyword(s):  
Middle Ear ◽  
Hearing Aids ◽  
Animal Experiments ◽  
Hearing Impairments ◽  
New Device ◽  
Hearing Devices ◽  
Bone Stimulator ◽  
External Canal ◽  
Potential Benefits ◽  
Hearing Device

Following animal experiments, anatomic examinations, and histologic studies, an implantable hearing device was developed. This device, the temporal bone stimulator (TBS), uses an inductive coil without percutaneous connection that transmits bone-conducted vibrations to the inner ear. Ten patients have been implanted and followed by the Central Ear Research Institute. The TBS is effective and may have wide application in producing amplification in good sound fidelity when used in patients who have external canal, middle ear, or eustachian tube disease that is poorly corrected by surgery or conventional hearing aids. The utilization of similar principles of electromagnetic transfer of energy directly to the ossicles appears reasonable and is potentially highly rewarding for those who have sensorineural hearing impairments with thresholds greater than 40 dB. The enormous potential benefits derived from the application of these implantable hearing devices is worthy of the greatest effort in future otologic investigation.

scholarly journals EAR CANAL INSERTION-TYPE PIEZOELECTRIC BONE CONDUCTION ACTUATOR OF BRIDGE STRUCTURE

2020 ◽  
Vol 20 (10) ◽  
pp. 2040026
Author(s):  
DO YEON KIM ◽  
SUNG DAE NA ◽  
KI WOONG SEONG ◽  
MYOUNG NAM KIM
Keyword(s):  
Piezoelectric Actuator ◽  
Hearing Aids ◽  
Bone Conduction ◽  
Electrical Energy ◽  
Bridge Structure ◽  
Ear Canal ◽  
Element Analysis ◽  
External Interference ◽  
Amplification Ratio ◽  
Bridge Type

Hearing loss in people is increasing because of a rise in the usage of wireless audio multimedia devices. Hearing aids are used as representative hearing rehabilitation devices. Bone conduction hearing aids are recommended for problems in the eardrum and middle ear. Bone conduction is classified according to the driving method into two types, electromagnetic and piezoelectric. Electromagnetic bone conduction causes skin disease and aesthetic problems due to transplantation, high power consumption, and external interference. Piezoelectric bone conduction converts electrical energy into mechanical vibrations, and the characteristics change linearly with size. However, the driving force of ear canal insertion of the piezoelectric body is limited because of the ear canal anatomy. In this paper, a piezoelectric actuator with a bridge structure inserted into the ear canal is proposed. The proposed method is that the displacement amplification ratio was derived using the formula of a bridge-type structure, and the displacement and resonance frequency were derived by finite element analysis (FEA) using different variables. The piezoelectric actuator was fabricated on the basis of FEA simulation results and verified through an artificial mastoid for stimulation in the ear canal. It is expected that the proposed piezoelectric actuator can be used in the various fields for sound and precision control.

scholarly journals Cartilage Conduction Hearing and Its Clinical Application

2021 ◽  
Vol 11 (2) ◽  
pp. 254-262
Author(s):  
Tadashi Nishimura ◽  
Hiroshi Hosoi ◽  
Ryota Shimokura ◽  
Chihiro Morimoto ◽  
Tadashi Kitahara
Keyword(s):  
Hearing Aids ◽  
Sound Pressure ◽  
Signal Transmission ◽  
Bone Conduction ◽  
Transmission Mechanism ◽  
Ear Canal ◽  
Stable Fixation ◽  
Loud Sound ◽  
Aural Atresia ◽  
Air Conduction

Cartilage conduction (CC) is a form of conduction that allows a relatively loud sound to be audible when a transducer is placed on the aural cartilage. The CC transmission mechanism has gradually been elucidated, allowing for the development of CC hearing aids (CC-HAs), which are clinically available in Japan. However, CC is still not fully understood. This review summarizes previous CC reports to facilitate its understanding. Concerning the transmission mechanism, the sound pressure level in the ear canal was found to increase when the transducer was attached to the aural cartilage, compared to an unattached condition. Further, inserting an earplug and injecting water into the ear canal shifted the CC threshold, indicating the considerable influence of cartilage–air conduction on the transmission. In CC, the aural cartilage resembles the movable plate of a vibration speaker. This unique transduction mechanism is responsible for the CC characteristics. In terms of clinical applications, CC-HAs are a good option for patients with aural atresia, despite inferior signal transmission compared to bone conduction in bony atretic ears. The advantages of CC, namely comfort, stable fixation, esthetics, and non-invasiveness, facilitate its clinical use.

FPGA Based Vehicle to Vehicle Communication in Spartan 3E

2020 ◽  
Vol 8 ◽  
pp. 14-21
Author(s):  
Surya Man Koju ◽  
Nikil Thapa
Keyword(s):  
Signal Processing ◽  
Autonomous Vehicle ◽  
Processing Unit ◽  
Warning Signals ◽  
Vehicle Communication ◽  
Digital Vlsi ◽  
Vehicle To Vehicle ◽  
Vehicle Operation ◽  
Vehicle Technology ◽  
The Voice

This paper presents economic and reconfigurable RF based wireless communication at 2.4 GHz between two vehicles. It implements digital VLSI using two Spartan 3E FPGAs, where one vehicle receives the information of another vehicle and shares its own information to another vehicle. The information includes vehicle’s speed, location, heading and its operation, such as braking status and turning status. It implements autonomous vehicle technology. In this work, FPGA is used as central signal processing unit which is interfaced with two microcontrollers (ATmega328P). Microcontroller-1 is interfaced with compass module, GPS module, DF Player mini and nRF24L01 module. This microcontroller determines the relative position and the relative heading as seen from one vehicle to another. Microcontroller-2 is used to measure the speed of vehicle digitally. The resulting data from these microcontrollers are transmitted separately and serially through UART interface to FPGA. At FPGA, different signal processing such as speed comparison, turn comparison, distance range measurement and vehicle operation processing, are carried out to generate the voice announcement command, warning signals, event signals, and such outputs are utilized to warn drivers about potential accidents and prevent crashes before event happens.

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