TY - GEN
T1 - Flexible Magnetoresistive Sensors for Guiding Cardiac Catheters
AU - Hawsawi, M.
AU - Amara, S.
AU - Mashraei, Y.
AU - Almansouri, A.
AU - Mohammad, H.
AU - Sevilla, G. Torres
AU - Jakob, G.
AU - Jaiswal, S.
AU - Kläui, M.
AU - Haneef, A.
AU - Saoudi, A.
AU - Hussain, M.
AU - Kosel, J.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/16
Y1 - 2018/8/16
N2 - 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 μm2, 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.
AB - 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 μm2, 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.
KW - Catheter
KW - Flexible Sensor
KW - Magnetic Tunnel Junctions
KW - Orientation
KW - Tunnel Magnetoresistive Sensor
UR - http://www.scopus.com/inward/record.url?scp=85053144743&partnerID=8YFLogxK
U2 - 10.1109/MeMeA.2018.8438796
DO - 10.1109/MeMeA.2018.8438796
M3 - Conference contribution
AN - SCOPUS:85053144743
SN - 9781538633915
T3 - MeMeA 2018 - 2018 IEEE International Symposium on Medical Measurements and Applications, Proceedings
BT - MeMeA 2018 - 2018 IEEE International Symposium on Medical Measurements and Applications, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE International Symposium on Medical Measurements and Applications, MeMeA 2018
Y2 - 11 June 2018 through 13 June 2018
ER -