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Updated: May 22, 2026
07:50
An In vitro System to Gauge the Thrombolytic Efficacy of Histotripsy and a Lytic Drug
Published on: June 4, 2021
Computational analysis of blood clot dissolution using a vibrating catheter tip
Jeong Hyun Lee1, Jin Sun Oh, Bye Ri Yoon
1Department of Mechanical Engineering, Myongji University, Republic of Korea.
Summary
A novel vibrating actuator enhances endovascular thrombolysis by improving enzyme perfusion into blood clots. This study validates a computational model for predicting treatment efficacy in complex flow fields.
Area of Science:
- Biomedical Engineering
- Fluid Dynamics
- Biomaterials
Background:
- Endovascular thrombolysis is crucial for treating thrombotic diseases.
- Optimizing enzyme delivery to clots remains a challenge.
Purpose of the Study:
- To investigate a novel vibrating electroactive polymer actuator for enhanced endovascular thrombolysis.
- To develop and validate a computational model for predicting thrombolysis efficacy.
Main Methods:
- Computational fluid dynamics and species transport simulations incorporating fluid-structure interaction.
- In vitro thrombolysis experiments using a vibrating polymer actuator.
- Analysis of enzyme (plasminogen activator) perfusion into simulated clots.
Main Results:
- Actuator vibration at 1 and 5 Hz significantly enhanced plasminogen activator perfusion.
- Perfusion efficacy correlated with actuator oscillation frequency and amplitude.
- Computational predictions of perfused volume closely matched experimental data.
Conclusions:
- Vibrating electroactive polymer actuators show promise for improving endovascular thrombolysis.
- The developed computational model accurately predicts thrombolysis outcomes in complex flow conditions.
- Actuator oscillation is an effective strategy for enhancing enzyme delivery in clot lysis.
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