A Shape Memory Alloy-Based Miniaturized Actuator for Catheter Interventions

Yueh Hsun Lu, Karthick Mani, Bivas Panigrahi, Saurabh Hajari, Chia-Yuan Chen

Research output: Contribution to journalArticle

Abstract

In the current scenario of endovascular intervention, surgeons have to manually navigate the catheter within the complex vasculature of the human body under the guidance of X-ray. This manual intervention upsurges the possibilities of vessel damage due to frequent contact between the catheter and vasculature wall. In this context, a shape memory alloy-based miniaturized actuator was proposed in this study with a specific aim to reduce vessel wall related damage by improving the bending motions of the guidewire tip in a semi-automatic fashion. The miniaturized actuator was integrated with a FDA-approved guidewire and tested within a patient-specific vascular network model to realize its feasibility in the real surgical environment. The results illustrate that the miniaturized actuator gives a bending angle over 23° and lateral displacement over 900 µm to the guide wire tip by which the guidewire can be navigated with precision and possible vessel damage during the catheter intervention can certainly be minimized. In addition to it, the dynamic responses of the presented actuator were further investigated through numerical simulation in conjunction with the analytic analysis.

Original languageEnglish
Pages (from-to)405-413
Number of pages9
JournalCardiovascular Engineering and Technology
Volume9
Issue number3
DOIs
Publication statusPublished - 2018 Sep 15

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Catheters
Shape memory effect
Actuators
Human Body
Blood Vessels
X-Rays
Dynamic response
Wire
X rays
Computer simulation

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Cardiology and Cardiovascular Medicine

Cite this

Lu, Yueh Hsun ; Mani, Karthick ; Panigrahi, Bivas ; Hajari, Saurabh ; Chen, Chia-Yuan. / A Shape Memory Alloy-Based Miniaturized Actuator for Catheter Interventions. In: Cardiovascular Engineering and Technology. 2018 ; Vol. 9, No. 3. pp. 405-413.
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A Shape Memory Alloy-Based Miniaturized Actuator for Catheter Interventions. / Lu, Yueh Hsun; Mani, Karthick; Panigrahi, Bivas; Hajari, Saurabh; Chen, Chia-Yuan.

In: Cardiovascular Engineering and Technology, Vol. 9, No. 3, 15.09.2018, p. 405-413.

Research output: Contribution to journalArticle

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