Flexible Magnetoresistive Sensors for Guiding Cardiac Catheters

Files
08438796.pdf (2.39 MB)

Type
Conference Paper

Authors
Hawsawi, M.
Amara, Selma
Mashraei, Yousof
Almansouri, Abdullah Saud Mohammed
Mohammad, H.
Sevilla, G. Torres
Jakob, G.
Jaiswal, S.
Klaui, M.
Haneef, A.
Saoudi, A.
Hussain, M.
Kosel, Jürgen

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program

Online Publication Date
2018-08-20

Print Publication Date
2018-06

Date
2018-08-20

Abstract
Cardiac catheterization is a procedure, in which a long thin tube that is called a “catheter” is inserted into the heart for diagnosis or treatment. Due to the excessive use of x-ray doses and contrast agents for orientation detection during the surgery, there is a need to find a better alternative. This paper presents magnetic tunnel junction sensors on flexible Si attached to the catheter tip for orientation detection during minimally invasive surgeries. Due to the small size of catheters, extreme minimization in terms of size, weight, thickness and power consumption is needed for any device implemented on it. The fabricated flexible magnetic tunnel junctions fulfill those requirements with size, thickness, weight and power consumption of 150 μm 2 , 12 μm, 8 μg and 0.15 μW, respectively, while still providing a high sensitivity of 4.93 %/Oe. The sensors can be bent with up to 500 μm in diameter, which is more than needed for even the smallest catheters of size 1 mm (3 Fr) in diameter. This result is a stepping-stone towards the development of a versatile and low-cost smart catheter system that can help surgeons navigate inside the heart while minimizing the side effects.

Citation
Hawsawi M, Amara S, Mashraei Y, Almansouri A, Mohammad H, et al. (2018) Flexible Magnetoresistive Sensors for Guiding Cardiac Catheters. 2018 IEEE International Symposium on Medical Measurements and Applications (MeMeA). Available: http://dx.doi.org/10.1109/memea.2018.8438796.

Acknowledgements
Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
2018 IEEE International Symposium on Medical Measurements and Applications (MeMeA)

DOI
10.1109/memea.2018.8438796

Additional Links
https://ieeexplore.ieee.org/document/8438796/

Permanent link to this record
http://hdl.handle.net/10754/628469
Collections
Conference Papers
Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Electrical and Computer Engineering Program