A high-efficiency ultrasonic power link for implantable medical devices

用于植入式医疗设备的高效超声波电源链路

• 批准号: 414283-2012
• 负责人: Adamson, Robert
• 金额: $ 9.49万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Health Research Projects
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=530863
• 关键词: efficiency; ultrasonic; power; link; implantable

We propose to develop a high-efficiency transcutaneous ultrasound link to provide power to implanted hearing devices. This requires a cohesive combination of engineering expertise to develop new technology, and clinical/physiological expertise to realise its potential in terms of new surgical options and to test its ability to deliver functionally. At present, implanted hearing devices are powered with a set of radiofrequency induction coils that transfer power through the magnetic field. Such systems have some serious and fundamental limitations: Induction coils trade off size and efficiency, with smaller devices being less efficient, and are quite sensitive to alignment and positioning errors. The high sensitivity to alignment error forces the use of alignment magnets which make it impossible to perform MRI scans on the implanted patient without either removing the magnet, or accepting large shadow areas in the images. MRI scanning is the definitive test for many disorders, and many

我们建议开发一种高效的经皮超声链路，为植入式听力设备提供电源。这需要工程专业知识的紧密结合来开发新技术，以及临床/生理专业知识，以实现其在新手术选择方面的潜力，并测试其提供功能的能力。目前，植入式助听器由一组射频感应线圈供电，通过磁场传输功率。这样的系统有一些严重和根本的限制：感应线圈权衡尺寸和效率，较小的设备效率较低，并且对对准和定位误差非常敏感。对对准误差的高敏感性迫使使用对准磁体，这使得在不移除磁体或接受图像中的大阴影区域的情况下不可能对植入的患者执行MRI扫描。MRI扫描是许多疾病的决定性测试，