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題 名 | Design Optimization of Cartilage Myringoplasty Using Finite Element Analysis=運用有限元素分析法進行生物力學模擬軟骨耳膜修補術最佳化設計 |
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作 者 | 溫羽軒; 徐莉萍; 陳培榕; 李家鳳; | 書刊名 | 慈濟醫學 |
卷 期 | 18:5 民95.10 |
頁 次 | 頁370-377+406 |
分類號 | 416.81 |
關鍵詞 | 軟骨耳膜修補術; 中耳生物力學; 多重身體動態分析; 數學上的模型; Cartilage myringoplasty; Middle ear biomechanics; Multi-body dynamic analysis; Mathematical model; |
語 文 | 英文(English) |
中文摘要 | 目的:本篇實驗的目的在研究軟骨的聲音傳導特性,以達到最近里想軟骨耳膜修補手術。材料與方法:我們發展一套合併軟骨跟耳膜的有限元素模型來模擬軟骨耳膜修補的特性,從大體上取得耳珠軟骨跟平均的耳膜膜型來實驗,耳珠軟骨的參數包括曲度跟交叉測量,軟骨被重建在立體中耳模型的耳膜破洞上,利用有限元素模型來計算最佳耳膜?補的軟骨厚度。結果:減少軟骨的厚度可以增加聲音傳導的品質,從聲音傳導來看,0.1到0.2公厘厚度的軟骨最適合耳膜的震動。結論:從聲音的觀點來看軟骨對於耳膜重建是相當有用的,聲音傳導損失可以利用較薄的軟骨來減少,0.2公厘的軟骨可以用在低頻、0.1公厘的軟骨可以用在高頻,一方面能達到力學上的穩定度並且減少聲音傳導的損失。 |
英文摘要 | Objective: The purpose of this study was to determine the acoustic transfer characteristics of cartilage for optimal cartilage myringoplasty. Material and Methods: We developed a cartilage plate-tympanic membrane coupled finite element model to investigate the transfer characteristics of cartilage myringoplasty. Cartilage specimens of the tragus were obtained from fresh human cadavers and were investigated by means of a tympanic membrane model. The parameters of tragus were determined by curve fitting and cross calibration. The cartilage plate was reconstructed based on an ear drum performation using our 3-dimensional middle ear biomechanical model. The optimal thickness of cartilage myringoplasty was calculated using finite element analysis. Result: Reducing cartilage thickness leads to an improvement into acoustic transfer qualities. From an acoustic point of view, 0.1-0.2mm thick cartilage plate seems to give the best results in term of tympanic membrane vibration. Conclusion: Tragal cartilage is useful for reconstruction of tympanic membrane from the perspective of acoustic properties. The acoustic transfer loss by the cartilage can be reduced by decreasing its thickness. A thickness of 0.2mm at lower frequency and 0.1mm at higher frequency are regarded as a good compromise between sufficient mechanical stability and low acoustic transfer loss. |
本系統中英文摘要資訊取自各篇刊載內容。