共振频率分析识别了与骨式听力植入物稳定性相关的植入物和宿主相关因素
Aren Bezdjian, Nicholas Mikolajewicz, Carolyn Denton
1School of Mechanical and Manufacturing Engineering, University of New South Wales Sydney, Australia.
概括
共振频率分析 (RFA) 可靠地测量了骨式听力植入器 (BAHI) 的稳定性. 诸如手术方法,持续时间,年龄和支柱长度等因素影响稳定性,引导更好的结果.
科学领域:
- 生物医学工程 生物医学工程
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 植入物学 植入物学
背景情况:
- 骨式听力植入物 (BAHI) 对于听力恢复至关重要.
- 由于植入物和宿主相关因素导致的早期植入物挤出是一个临床挑战.
- 需要使用非侵入性方法来评估植入物稳定性并了解失效机制.
研究的目的:
- 评估共振频率分析 (RFA) 的实用性,以量化骨式听力植入器的稳定性.
- 在各种环境中确定影响植入物稳定性的因素.
- 为了验证RFA作为机械推出强度的可靠预测器.
主要方法:
- 使用RFA来评估在骨,人体尸体样本和潜在患者队列中的植入物稳定性.
- 植入物稳定系数 (ISQ) 值与机械推出负荷相关.
- 在尸体和患者样本中确定了与植入物稳定性相关的因素.
主要成果:
- ISQ证明了与峰值机械负荷的显著相关性,可靠地预测到1kN的稳定性.
- 在尸体样本中,支柱长度,骨量和供体年龄与稳定性有关.
- 最少侵入性的Ponto手术,更长的植入时间,年龄较大,以及较短的支柱长度与患者的稳定性改善相关.
结论:
- 植入物稳定系数 (ISQ) 是评估骨式听力植入物稳定性的有效指标.
- 手术技术,植入时间,患者年龄和支柱长度是影响植入物稳定的关键因素.
- 这些发现支持RFA在管理BAHI中的临床应用.
相关概念视频
01:14Sound Waves: Resonance
2.6K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
2.6K
01:13The Cochlea
44.7K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
44.7K
01:17Series Resonance
174
The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
174
01:23Parallel Resonance
205
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
205
01:19Concept of Resonance and its Characteristics
5.0K
If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not...
5.0K
01:11The Auditory Ossicles
1.6K
The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
1.6K