Mechanics of stretchable electronics on balloon catheter under extreme deformation |
| |
| Institution: | 1. Center for Mechanics and Materials, Tsinghua University, Beijing 100084, China;2. Department of Civil Engineering and Mechanical Engineering, Northwestern University, Evanston, IL 60208, USA;4. Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801, USA;5. MC10 Inc., Cambridge, MA 02140, USA;6. Center for Nanoparticle Research of Institute for Basic Science, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Republic of Korea;7. AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China |
| |
| Abstract: | Stretchable electronics has been applied to balloon catheters for high-efficacy ablation, with tactile sensing integrated on the surface, to establish full and conformal contact with the endocardial surface for elimination of the heart sink caused by blood flow around their surfaces. The balloon of the catheter folds into uniform ‘clover’ patterns driven by the pressure mismatch inside (～vacuum) and outside of the balloon (pressure ～1 atm). The balloon catheter, on which microelectrodes and interconnects are printed, undergoes extreme mechanical deformation during its inflation and deflation. An analytic solution is obtained for balloon catheter inflation and deflation, which gives analytically the distribution of curvatures and the maximum strain in the microelectrodes and interconnects. The analytic solution is validated by the finite element analysis. It also accounts for the effect of inflated radius, and is very useful to the optimal design of balloon catheter. |
| |
| Keywords: | Stretchable electronics Balloon catheter Finite deformation Analytic model |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
