不同阻塞器修复后上呼吸道气流特点比较

›› 2015, Vol. 35 ›› Issue (2): 104-107.

不同阻塞器修复后上呼吸道气流特点比较

杜易敏¹,焦婷²,盖德倩³,⁴

1. 上海市第九人民医院
2. 上海交通大学医学院附属第九人民医院口腔医学院口腔修复科；上海市口腔医学重点实验室，上海（200011）
3.
4. 上海市第六人民医院

收稿日期:2014-09-22 修回日期:2014-10-25 出版日期:2015-02-28 发布日期:2015-03-03
通讯作者: 焦婷 E-mail:jiao_ting@hotmail.com
基金资助:
国家自然科学基金青年基金

Comparison of flow pattern in airway rehabilitated with different obturators

Received:2014-09-22 Revised:2014-10-25 Online:2015-02-28 Published:2015-03-03

摘要/Abstract

摘要： 目的　利用CFD数值模拟的方法研究不同阻塞器修复后上呼吸道气流动力学特征，为阻塞器外形的临床设计提供理论依据。方法　基于一例单侧上颌骨全切除术后患者的CT图像重建模拟阻塞器修复后上呼吸道的气道特征，采用计算流体力学方法对气流流动进行数值模拟。结果　获得患者高、中、低位的开放，闭合共6种阻塞器修复后吸气相和呼气相的气流流动趋势；健、患两侧在各截面处的面积以及各截面涡量云图，速度云图的比较。结论　阻塞器修复未能改变缺损腔气流流动模式，闭合式阻塞器能填塞缺损腔容积，改变空腔的长深比，改变空腔涡区范围大小。中位闭合式在吸气呼气相时均能显著减少涡区范围大小，是推荐的赝复体类型。

关键词: 上呼吸道, 气流运动, 数值模拟, 阻塞器

Abstract: Methods: The obturators rehabilitating the upper airway was reconstructed based on the CT graphs of a patient after unilateral complete resection of maxilla and the airflow was numerically simulated using the method of CFD. Results After restoration with high open, high closed, medium open, medium closed, low open, low closed obturators respectively, the airflow trends in both inspiration and expiration phases were obtained; the comparison of velocity contours, vorticity contours and area for each cross-section between the healthy side and the affected side was made. Conclusions Rehabilitation of various obturators cannot change the flow pattern of airflow in the cavity, and closed type can fill the defected cavity, thus changing the length-depth ratio and the low-velocity vortex area. Medium closed type ones are recommended as they can reduce the vorticity area substantially during both the inspiration and expiration phases.

Key words: the upper airway, air movement, numerical simulation, obturator prosthesis

中图分类号:

R318.01

杜易敏焦婷盖德倩. 不同阻塞器修复后上呼吸道气流特点比较[J]. 口腔医学, 2015, 35(2): 104-107.

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