左心室辅助装置的无线电源系统:线圈设计和组织行为对效率的影响
Hawraa A Almorshidi1, Ali Jafer Mahdi1,2, Manal Hussain Nawir1
1Department of Electrical and Electronic Engineering, University of Kerbala, 56001 Karbala, Iraq.
Journal of electrical bioimpedance
|July 10, 2025
概括
本研究介绍了用于植入心脏的高效无线电力传输 (WPT) 系统. 这种新的设计实现了91%的效率,为关键医疗器械提供了切实可行的解决方案.
科学领域:
- 生物医学工程 生物医学工程
- 电气工程 电气工程
- 无线电力传输是无线电力传输.
背景情况:
- 现有的无线电力传输 (WPT) 系统通常专注于内部医疗器械的低功耗应用.
- 需要强大的,高功率的WPT解决方案来支持关键的植入式设备,如心脏.
- 高频电力传输面临的挑战是效率和透到生物组织的深度.
研究的目的:
- 提出和验证一个紧的无线电力传输 (WPT) 系统,用于为植入心脏提供能量.
- 为了在可植入医疗器械的显著距离上实现高功率传输效率.
- 通过针对更高功率要求来解决现有WPT系统的局限性.
主要方法:
- 设计了一个WPT系统,集成了一个buck-boost转换器,H桥逆变器,低通波器和共振感应合器.
- 使用Litz线和多层传输线圈来提高效率和领域透.
- 采用精确的WPT系统和生物组织的数学建模用于电磁场模拟.
主要成果:
- 在60毫米的隔离距离上,实现了91%的功率传输效率.
- 为了安全和透,在工业,科学和医疗 (ISM) 频段内以 6.78 MHz 运行系统.
- 模拟证实了有效的电磁场行为和组织层的影响.
结论:
- 开发的紧型WPT系统是一个实用和高效的解决方案,满足植入心脏的高功率需求.
- 该设计克服了与生物环境中高频电力传输相关的挑战.
- 这项研究推动了WPT技术的发展,用于关键的医疗应用,需要可靠,高功率的能量传输.
相关概念视频
Node Analysis for AC Circuits
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
Power Distribution in Three-phase and Single Phase Circuits
Power distribution within electrical circuits is a foundational aspect of residential and industrial energy systems. While single-phase power is common in residential settings, three-phase power is the standard for industrial environments with heavy machinery. Each system is different and has advantages, and it's crucial to understand the underlying principles of power distribution and material efficiency.
Single-Phase Power Distribution:
Single-phase circuits are typical in household settings;...
Single-Phase Power Distribution:
Single-phase circuits are typical in household settings;...
Line Loss
The different configurations of source-load connections include wye (star) and delta connections. The relationship between line and phase voltages and currents varies depending on the configuration. When the source is supplying power, it is transmitted through the wires to the load, and during this transmission, some power is absorbed by the wires, leading to line loss.
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
Reducing Line Loss
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
Conduction System of the Heart
Autorhythmicity is a term that refers to the heart's inherent ability to generate electrical signals and instigate muscle contractions. This self-regulating conduction system within the heart consists of two key components: the pacemaker cells and specialized conducting cells.
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
The pacemaker cells are located in two primary nodes: the sinoatrial (SA) node and the atrioventricular (AV) node. The SA node pacemaker cells can autonomously depolarize, triggering an action potential that leads to the...
Conduction System of the Heart
The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
This system relies on the unique properties of nodal and Purkinje cells:...


