Rotational atherectomy (RA) utilizes a high-speed diamond grinding wheel to remove the calcified atherosclerotic plaque off the vessel wall via a catheter inside an artery for blood flow restoration and treatment of cardiovascular diseases. RA in angulated lesions is challenging due to the geometric constrains on the wheel motion, potentially leading to vessel dissection and perforation. To understand the grinding wheel motion and force during RA in curved arteries, experiments were conducted based on 3D printed anatomically accurate coronary artery phantoms with plaster coating as the plaque surrogate, a high-speed camera, and a multi-axis force transducer. Results showed that the grinding wheel did not orbit inside right coronary artery phantom which led to a highly biased ground region aligned with several contact points between the guidewire and the arterial wall. The grinding wheel orbital motion facilitated an even treatment of several segments in left anterior descending coronary artery phantom. The grinding force, ranging from 0.05 to 0.20 N, increased with the wheel rotational speed when the wheel orbited and was insensitive to the wheel speed without wheel orbital motion. This study explained the clinically observed guidewire bias from the engineering perspective and further revealed the RA mechanism of action in angulated artery, which may assist to improve the device design and the operating technique.
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ASME 2018 13th International Manufacturing Science and Engineering Conference
June 18–22, 2018
College Station, Texas, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5135-7
PROCEEDINGS PAPER
Grinding Wheel Motion and Force During Plaque Removal by Rotational Atherectomy in Angulated Coronary Artery Available to Purchase
Yihao Zheng,
Yihao Zheng
University of Michigan, Ann Arbor, MI
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Jingxuan Lyu,
Jingxuan Lyu
University of Michigan, Ann Arbor, MI
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Ata Susamaz,
Ata Susamaz
University of Michigan, Ann Arbor, MI
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Hitinder S. Gurm,
Hitinder S. Gurm
University of Michigan, Ann Arbor, MI
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Albert J. Shih
Albert J. Shih
University of Michigan, Ann Arbor, MI
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Yihao Zheng
University of Michigan, Ann Arbor, MI
Jingxuan Lyu
University of Michigan, Ann Arbor, MI
Yang Liu
University of Michigan, Ann Arbor, MI
Jason Lo
University of Michigan, Ann Arbor, MI
Ata Susamaz
University of Michigan, Ann Arbor, MI
Hitinder S. Gurm
University of Michigan, Ann Arbor, MI
Albert J. Shih
University of Michigan, Ann Arbor, MI
Paper No:
MSEC2018-6686, V001T05A010; 6 pages
Published Online:
September 24, 2018
Citation
Zheng, Y, Lyu, J, Liu, Y, Lo, J, Susamaz, A, Gurm, HS, & Shih, AJ. "Grinding Wheel Motion and Force During Plaque Removal by Rotational Atherectomy in Angulated Coronary Artery." Proceedings of the ASME 2018 13th International Manufacturing Science and Engineering Conference. Volume 1: Additive Manufacturing; Bio and Sustainable Manufacturing. College Station, Texas, USA. June 18–22, 2018. V001T05A010. ASME. https://doi.org/10.1115/MSEC2018-6686
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