[1]许银胜,李静.基于组织粘弹性的下肢静脉泵作用于下肢的仿真及测试[J].中国医学物理学杂志,2024,41(10):1289-1295.[doi:DOI:10.3969/j.issn.1005-202X.2024.10.014]
　XU Yinsheng,LI Jing.Simulation and testing of intermittent pneumatic compression device acting on lower extremities based on viscoelastic property of tissues[J].Chinese Journal of Medical Physics,2024,41(10):1289-1295.[doi:DOI:10.3969/j.issn.1005-202X.2024.10.014]
点击复制

基于组织粘弹性的下肢静脉泵作用于下肢的仿真及测试()
分享到：

《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
41卷
期数:
2024年第10期
页码:
1289-1295
栏目:
生物材料与力学
出版日期:
2024-10-25

文章信息/Info

Title:
Simulation and testing of intermittent pneumatic compression device acting on lower extremities based on viscoelastic property of tissues
文章编号:
1005-202X（2024）10-1289-07
作者:
许银胜; 李静
中国科学技术大学工程科学学院， 安徽 合肥 230027
Author(s):
XU Yinsheng;  LI Jing
School of Engineering Science, University of Science and Technology of China, Hefei 230027, China
关键词:
下肢静脉泵; 粘弹性; 双向流固耦合; 光电容积描记法; 静脉血液容积
Keywords:
Keywords: intermittent pneumatic compression device acting on lower extremities viscoelastic property bidirectional fluid-structure coupling photoplethysmography venous blood volume
分类号:
R318.01
DOI:
DOI:10.3969/j.issn.1005-202X.2024.10.014
文献标志码:
A
摘要:
目的：在课题组前期已经建立的下肢静脉泵作用于下肢的双向流固耦合模型基础上，提出针对人体组织采用粘弹特性，以更加符合人体生物力学特征。方法：使用Ansys Workbench软件构建下肢静脉泵对下肢作用的双向流固耦合模型，在仿真模型中将下肢脂肪、肌肉、血管壁赋予粘弹性性质，得到下肢静脉泵工作在加压-保压-释压阶段下肢静脉血液容积的变化。采用自行研制的下肢静脉泵对健康受试者小腿施加与仿真中相同的工况，并采用红外检测传感器基于光电容积描记法对大隐静脉血液容积进行监测。结果：仿真与实测的结果均显示：下肢静脉泵作用于下肢过程中，加压阶段下肢静脉血液容积减小，血液被排出；保压阶段血液容积也减小；释压阶段血液容积增大，静脉中血液再充盈，且再充盈时间长于释压时间。结论：由红外检测传感器测得的血液容积变化情况与仿真结果吻合，验证采用粘弹性材料模型的准确性和可靠性。
Abstract:
Abstract: Objective Based on the bidirectional fluid-structure coupling model of the intermittent pneumatic compression device acting on lower extremities established by the research group at the early stage, the study adopts viscoelastic properties for human tissues to better conform to human biomechanical characteristics. Methods The bidirectional fluid-structure coupling model of the intermittent pneumatic compression device acting on lower extremities was constructed with Ansys Workbench. In the simulation model, fat, muscles and venous walls were endowed with viscoelastic properties, and the change of lower extremity venous blood volume during inflation-holding-deflation operation of the intermittent pneumatic compression device was obtained. A self-developed intermittent pneumatic compression device was used to apply the same working conditions as in the simulation to the calf of the healthy subject, and the blood volume of the great saphenous vein was monitored using an infrared detection sensor based on photoplethysmography. Results The simulation and measurement results were consistent. With the intermittent pneumatic compression device acting on lower extremities, the blood volume in the lower extremity veins decreased in the inflation stage, and blood was discharged in the holding stage, the blood volume also decreased in the deflation stage, the blood volume increased, and the veins were refilled with blood, with the refilling time longer than the deflation duration. Conclusion The change of blood volume measured with the infrared detection sensor is consistent with the simulation results, verifying the accuracy and reliability of the proposed model of viscoelastic materials.

相似文献/References:

[1]瞿梓俊,李静.下肢静脉泵压力传递功能的双向流固耦合分析[J].中国医学物理学杂志,2024,41(1):109.[doi:DOI:10.3969/j.issn.1005-202X.2024.01.016]
　QU Zijun,LI Jing.Bidirectional fluid-structure interaction analysis on pressure transmission of the venaflow[J].Chinese Journal of Medical Physics,2024,41(10):109.[doi:DOI:10.3969/j.issn.1005-202X.2024.01.016]

备注/Memo

备注/Memo:
【收稿日期】2024-04-05 【基金项目】国家自然科学基金（91023049） 【作者简介】许银胜，硕士研究生，研究方向：生物材料与力学，E-mail: xys123@mail.ustc.edu.cn 【通信作者】李静，副教授，硕士生导师，研究方向：医学仪器、光机电仪器开发，E-mail: lijing@ustc.edu.cn
更新日期/Last Update: 2024-10-29