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- Title
Magneto-Elastic μ-Vibrator for Smashing Thrombus.
- Authors
Li, Wei; Xue, Cong; Li, Xinxin
- Abstract
A miniaturized thrombus dredger is proposed and developed in this study. The flexural resonance of the µ-resonator dredger is driven by a bulk-extensional magneto-elastic vibrator that is externally excited by alternating magnetic-field. With the fabricated prototype of the resonant dredger, a mice thrombus blocked in a simulated vessel is broken into micro-pieces, and the previously blocked vessel can recover to an unobstructed state within 1 h. A flow-rate ratio detection method is used to evaluate the thrombus-cleaning effectiveness. The comparison between the finite-element simulation and the experimental results validates the flow-rate ratio detection method. By optimally exciting the resonant dredger in its third resonant mode, the flow-rate ratio in the cleaned vessel increases by about 2.7 times compared with that in the partly blocked vessel, and the thrombus is smashed into micro-pieces.
- Subjects
MAGNETOSTRICTION; VIBRATORS; ACTUATORS
- Publication
Micromachines, 2019, Vol 10, Issue 1, p74
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi10010074