Micromachined fragment capturer for biomedical applications
Young-Soo Choi1, Dong-Weon Lee
1MEMS and Nanotechnology Laboratory, School of Mechanical Systems Engineering, Chonnam National University, 300 Yongbong, Buk, Gwangju 500-757, South Korea.
The Review of Scientific Instruments
|December 2, 2011
Summary
A novel micromachined device effectively captures plaque fragments during surgery for chronic total occlusion, a serious heart condition. This innovation enhances surgical safety by preventing fragment embolism, improving patient outcomes.
Area of Science:
- Biomedical Engineering
- Materials Science
- Cardiovascular Surgery
Background:
- Chronic total occlusion (CTO) is a serious heart disease exacerbated by modern dietary habits, necessitating emergency treatment.
- Plaque fragmentation during CTO intervention poses risks of distal embolization and adverse events.
Purpose of the Study:
- To design and fabricate a micromachined capturer for effectively collecting plaque fragments during CTO surgery.
- To optimize the capturer's performance using integrated micro-electro-mechanical systems (MEMS) and ionic polymer metal composite (IPMC) actuators.
Main Methods:
- Fabrication of a plastic body using rapid prototyping.
- Integration of SU-8 mesh structures and an array of IPMC actuators.
- Application of SU-8 and polydimethylsiloxane thin film coating to enhance IPMC actuator operating time by preventing solvent evaporation.
Main Results:
- The optimized SU-8 net and IPMC actuator array demonstrated effective collection of plaque fragments.
- The protective coating significantly improved the operational lifespan of the IPMC actuators by mitigating solvent loss.
- Preliminary results confirm the capturer's viability for biomedical applications.
Conclusions:
- The developed micromachined capturer shows promise for enhancing the safety and efficacy of chronic total occlusion interventions.
- This technology offers a potential solution for managing embolic debris during cardiovascular procedures.
- Further development could lead to improved clinical outcomes for patients with CTO.
