Background: Non-implantable bone anchored hearing devices (BCHDs) are utilized for patients with conductive or mixed hearing loss who are unsuitable for conventional hearing aids or have unresolved middle ear issues. ...Background: Non-implantable bone anchored hearing devices (BCHDs) are utilized for patients with conductive or mixed hearing loss who are unsuitable for conventional hearing aids or have unresolved middle ear issues. These devices can be surgically implanted or attached using adhesive plates, dental sticks, elastic headbands, or bone conduction spectacles. Optimal fitting of bone conduction spectacles requires appropriate frame selection and contact pressure in the temporal and mastoid areas. The ANSI S3.6 and DIN EN ISO 389-3 standards recommend a contact area of approximately 1.75 cm2 and a maximum force of 5.4 N for effective sound transmission and comfort. Methods: This study aimed to evaluate the technical fit and mechanical stability of universal bone conduction hearing spectacles compared to established systems. A Sen-Pressure 02 thin-film sensor connected to an Arduino Uno R3 board measured contact force in the temporal and mastoid areas. Several BCHDs were tested, including the Bruckhoff la belle BC D50/70, Radioear B71 headset, Radioear B71 elastic headband, Cochlear Baha SoundArc M, and Cochlear Baha elastic headband, on a PVC artificial head, with data analyzed using ANOVA and LSD post hoc tests. Results: The la belle BC D50/70 spectacles showed comparable contact force to established BCHDs, ensuring adequate sound transmission and comfort. Significant differences were observed between the systems, with the Radioear B71 headset exhibiting the highest forces. The la belle BC D50/70 had similar forces to the Radioear B71 elastic headband. Conclusion: The la belle BC D50/70 universal bone conduction hearing spectacles are a technically equivalent alternative to established BCHDs, maintaining pressure below 5.4 N. Future research should explore the impact of different contact forces on performance and comfort, and the integration of force control in modified spectacles. This study indicates that the la belle BC D50/70 is a viable alternative that meets audiological practice requirements.展开更多
To overcome some of the problems inherent in conventional heating aids such as low gain at high fi＇equencies due to acoustic feedback, discomfort in occlusion of the extemal ear canal and so on, implantable middle ea...To overcome some of the problems inherent in conventional heating aids such as low gain at high fi＇equencies due to acoustic feedback, discomfort in occlusion of the extemal ear canal and so on, implantable middle ear hearing devices （IMEHDs） have been developed over the past two decades. For such kinds of IMEHDs, this paper presents the design of a floating mass piezoelectric actuator using a PMN-30%PT stack as a new type of vibrator. The proposed piezoelectric actuator consists of only three components of a piezoelectric stack, a metal case and a clamp. For the purpose of aiding the design of this actuator, a coupling biomechanics model of human middle ear and the piezoelectric actuator was constructed. This model was built based on a complete set of computerized tomography section images of a healthy volunteer＇s left ear by reverse engineering technology. The validity of this model was confirmed by comparing the motion of the tympanic membrane and stapes footplate obtained by this model with published experimental measurements on human temporal bones. It is shown that the designed actuator can be implanted on the incus long process by a simple surgical operation, and the stapes footplate displacement by its excitation at 10.5 V root-mean-square（RMS） voltage was equivalent to that from acoustic stimulation at 100 dB sound pressure level（SPL）, which is adequate stimulation to the ossicular chain. The corresponding power consumption is 0.04 mW per volt of excitation at 1 kHz, which is low enough for the transducer to be used in an implantable middle ear device.展开更多
Hearing plays a vital role in the performance of a soldier and is important for speech processing. Noise-induced hearing loss is a significant impairment in the military and can affect combat performance. Military per...Hearing plays a vital role in the performance of a soldier and is important for speech processing. Noise-induced hearing loss is a significant impairment in the military and can affect combat performance. Military personnel are constantly exposed to high levels of noise and it is not surprising that noise induced hearing loss and tinnitus remain the second most prevalent service-connected disabilities. Unfortunately, unlike civilian personnel, military personnel have little option but to remain in noisy environments in order to complete specific tasks and missions. Use of hearing protection devices and follow-up audiological tests have become the mainstay of prevention of noise-induced hearing loss. This review focuses on sources of noise within the military, pathophysiology and management of patients with noise induced hearing loss.展开更多
目的系统评价单侧聋不同干预措施的效果。方法检索中国知网、万方、Web of science、PubMed、Cochrance Library等数据库及中国临床试验注册中心,搜索有关单侧聋分别采用信号对侧传输系统(CROS)、骨传导装置(BCD)、人工耳蜗植入(CI)干...目的系统评价单侧聋不同干预措施的效果。方法检索中国知网、万方、Web of science、PubMed、Cochrance Library等数据库及中国临床试验注册中心,搜索有关单侧聋分别采用信号对侧传输系统(CROS)、骨传导装置(BCD)、人工耳蜗植入(CI)干预方式效果的临床试验研究,检索时限为各数据库建库以来至2022年10月,由2名评价员独立筛选文献、提取资料和文献质量评估后,采用Rev Man 5.3软件进行Meta分析。结果共纳入14篇研究547例单侧聋患者,Meta分析结果示:①噪声下言语:三种干预方式在SssdNnh(目标信号位于患侧、噪声位于正常侧)方位下结果与未干预组有统计学差异,其余方位没有统计学差异;②声源定位:CI干预组优于未干预组,有统计学差异,BCD干预组与对照组没有统计学差异,CROS干预组比未干预组差,有统计学差异;③耳鸣量表得分:CI和BCD干预与对照组有统计学差异,CROS干预没有统计学差异;④SSQ得分:三种干预方式均优于对照组,有统计学差异。结论人工耳蜗植入对单侧聋患者在噪声下言语识别、声源定位、耳鸣缓解及日常听能改善均有明显的改善作用,BCD和CROS干预在特定的生活场景下也有一定的改善作用。展开更多
单侧聋(single-sideddeafness,SSD)或不对称性听力损失(asymmetrichearingloss,AHL)患者由于双耳总和效应及静噪效应缺失、出现头影效应并影响声源定位能力,在复杂交流场合面临着常人无法体会的听觉功能障碍。近年来,随着信号对传式(con...单侧聋(single-sideddeafness,SSD)或不对称性听力损失(asymmetrichearingloss,AHL)患者由于双耳总和效应及静噪效应缺失、出现头影效应并影响声源定位能力,在复杂交流场合面临着常人无法体会的听觉功能障碍。近年来,随着信号对传式(contralateral routing of signal,CROS)助听器、骨传导装置(bone-conductive devices,BCDs)及人工耳蜗(CI)技术领域的进步,使得单侧聋患者看到了曙光。不同装置应用不同的评估方法,结论均支持对单侧聋的干预。临床上很重要的工作是要对使用不同装置(包括不采取任何处置)后的收益(甚至是潜在的负面收益)做出预期,彼此间应是可以比较的。为此需对相关适应证指标、测试方法及成效评估框架达成共识。展开更多
文摘Background: Non-implantable bone anchored hearing devices (BCHDs) are utilized for patients with conductive or mixed hearing loss who are unsuitable for conventional hearing aids or have unresolved middle ear issues. These devices can be surgically implanted or attached using adhesive plates, dental sticks, elastic headbands, or bone conduction spectacles. Optimal fitting of bone conduction spectacles requires appropriate frame selection and contact pressure in the temporal and mastoid areas. The ANSI S3.6 and DIN EN ISO 389-3 standards recommend a contact area of approximately 1.75 cm2 and a maximum force of 5.4 N for effective sound transmission and comfort. Methods: This study aimed to evaluate the technical fit and mechanical stability of universal bone conduction hearing spectacles compared to established systems. A Sen-Pressure 02 thin-film sensor connected to an Arduino Uno R3 board measured contact force in the temporal and mastoid areas. Several BCHDs were tested, including the Bruckhoff la belle BC D50/70, Radioear B71 headset, Radioear B71 elastic headband, Cochlear Baha SoundArc M, and Cochlear Baha elastic headband, on a PVC artificial head, with data analyzed using ANOVA and LSD post hoc tests. Results: The la belle BC D50/70 spectacles showed comparable contact force to established BCHDs, ensuring adequate sound transmission and comfort. Significant differences were observed between the systems, with the Radioear B71 headset exhibiting the highest forces. The la belle BC D50/70 had similar forces to the Radioear B71 elastic headband. Conclusion: The la belle BC D50/70 universal bone conduction hearing spectacles are a technically equivalent alternative to established BCHDs, maintaining pressure below 5.4 N. Future research should explore the impact of different contact forces on performance and comfort, and the integration of force control in modified spectacles. This study indicates that the la belle BC D50/70 is a viable alternative that meets audiological practice requirements.
基金supported by National Natural Science Foundation of China (Grant No. 10772121)
文摘To overcome some of the problems inherent in conventional heating aids such as low gain at high fi＇equencies due to acoustic feedback, discomfort in occlusion of the extemal ear canal and so on, implantable middle ear hearing devices （IMEHDs） have been developed over the past two decades. For such kinds of IMEHDs, this paper presents the design of a floating mass piezoelectric actuator using a PMN-30%PT stack as a new type of vibrator. The proposed piezoelectric actuator consists of only three components of a piezoelectric stack, a metal case and a clamp. For the purpose of aiding the design of this actuator, a coupling biomechanics model of human middle ear and the piezoelectric actuator was constructed. This model was built based on a complete set of computerized tomography section images of a healthy volunteer＇s left ear by reverse engineering technology. The validity of this model was confirmed by comparing the motion of the tympanic membrane and stapes footplate obtained by this model with published experimental measurements on human temporal bones. It is shown that the designed actuator can be implanted on the incus long process by a simple surgical operation, and the stapes footplate displacement by its excitation at 10.5 V root-mean-square（RMS） voltage was equivalent to that from acoustic stimulation at 100 dB sound pressure level（SPL）, which is adequate stimulation to the ossicular chain. The corresponding power consumption is 0.04 mW per volt of excitation at 1 kHz, which is low enough for the transducer to be used in an implantable middle ear device.
文摘Hearing plays a vital role in the performance of a soldier and is important for speech processing. Noise-induced hearing loss is a significant impairment in the military and can affect combat performance. Military personnel are constantly exposed to high levels of noise and it is not surprising that noise induced hearing loss and tinnitus remain the second most prevalent service-connected disabilities. Unfortunately, unlike civilian personnel, military personnel have little option but to remain in noisy environments in order to complete specific tasks and missions. Use of hearing protection devices and follow-up audiological tests have become the mainstay of prevention of noise-induced hearing loss. This review focuses on sources of noise within the military, pathophysiology and management of patients with noise induced hearing loss.
文摘目的系统评价单侧聋不同干预措施的效果。方法检索中国知网、万方、Web of science、PubMed、Cochrance Library等数据库及中国临床试验注册中心,搜索有关单侧聋分别采用信号对侧传输系统(CROS)、骨传导装置(BCD)、人工耳蜗植入(CI)干预方式效果的临床试验研究,检索时限为各数据库建库以来至2022年10月,由2名评价员独立筛选文献、提取资料和文献质量评估后,采用Rev Man 5.3软件进行Meta分析。结果共纳入14篇研究547例单侧聋患者,Meta分析结果示:①噪声下言语:三种干预方式在SssdNnh(目标信号位于患侧、噪声位于正常侧)方位下结果与未干预组有统计学差异,其余方位没有统计学差异;②声源定位:CI干预组优于未干预组,有统计学差异,BCD干预组与对照组没有统计学差异,CROS干预组比未干预组差,有统计学差异;③耳鸣量表得分:CI和BCD干预与对照组有统计学差异,CROS干预没有统计学差异;④SSQ得分:三种干预方式均优于对照组,有统计学差异。结论人工耳蜗植入对单侧聋患者在噪声下言语识别、声源定位、耳鸣缓解及日常听能改善均有明显的改善作用,BCD和CROS干预在特定的生活场景下也有一定的改善作用。
文摘单侧聋(single-sideddeafness,SSD)或不对称性听力损失(asymmetrichearingloss,AHL)患者由于双耳总和效应及静噪效应缺失、出现头影效应并影响声源定位能力,在复杂交流场合面临着常人无法体会的听觉功能障碍。近年来,随着信号对传式(contralateral routing of signal,CROS)助听器、骨传导装置(bone-conductive devices,BCDs)及人工耳蜗(CI)技术领域的进步,使得单侧聋患者看到了曙光。不同装置应用不同的评估方法,结论均支持对单侧聋的干预。临床上很重要的工作是要对使用不同装置(包括不采取任何处置)后的收益(甚至是潜在的负面收益)做出预期,彼此间应是可以比较的。为此需对相关适应证指标、测试方法及成效评估框架达成共识。
