Comprehensive Study on the Impact of Sternotomy Wires on UWB WBAN Channel Characteristics on the Human Chest Area

This paper presents a comprehensive study on the impact of the sternotomy wires on the characteristics of ultra wideband (UWB) radio propagation channel in the human chest area. The study is conducted using two simulation models: a planar layer model and a three-dimensional elliptical layer model. The study includes antennas designed for on-body and in-body communications. Furthermore, the measured data and propagation path calculations are presented to verify the simulation results. The main purpose is to show how the steel wires affect the on-body channel characteristics and in-body propagation within the tissues when the monitoring antennas are located in close vicinity of the human body. The study is conducted by evaluating: 1) channel characteristics in both frequency and time domains; 2) 2D power flow figures; and 3) Poynting vector values. Furthermore, the impact of the fat layer thickness on the visibility of sternotomy wires is studied. Moreover, the impact of sternotomy wires is studied for the case of the recently operated patient, for which the sternotomy wires are on the sternum bone surface, as well as for the case where the sternotomy wires are embedded into the sternum bone. It is found that sternotomy wires have a clear impact on the channel. The strength of the impact depends on the antenna types used by the monitoring devices, the thickness of the fat layer in the sternum area, and whether the sternotomy wires are on the sternum surface or whether they have already been embedded on the sternum as it happens with time.

[1]  Rahul Krishnan Pathinarupothi,et al.  IoT-Based Smart Edge for Global Health: Remote Monitoring With Severity Detection and Alerts Transmission , 2019, IEEE Internet of Things Journal.

[2]  Jari Iinatti,et al.  Impact of an aortic valve implant on body surface UWB propagation: A preliminary study , 2011, 2011 5th International Symposium on Medical Information and Communication Technology.

[3]  Matti Hämäläinen,et al.  Preliminary UWB channel study for wireless body area networks in medical applications , 2011, Int. J. Ultra Wideband Commun. Syst..

[4]  Anna Elfström,et al.  Evaluation of Sternum Closure Techniques Using Finite Element Analysis , 2013 .

[5]  Carlos A. Pomalaza-Raez,et al.  Low-UWB Directive Antenna for Wireless Capsule Endoscopy Localization , 2018, BODYNETS.

[6]  I. Dove,et al.  Analysis of Radio Propagation Inside the HumanBody for in-Body Localization Purposes , 2014 .

[7]  Thiemo Voigt,et al.  Characterization of the Fat Channel for Intra-Body Communication at R-Band Frequencies , 2018, Sensors.

[8]  Attaphongse Taparugssanagorn,et al.  The UWB Channel in Medical Wireless Body Area Networks (WBANs) , 2012 .

[9]  Matti Hämäläinen,et al.  Categorized UWB On-Body Radio Channel Modeling for WBANs , 2016 .

[10]  Jari H. Iinatti,et al.  A Finite Integration Technique-Based Simulation Study on the Impact of the Sternotomy Wires on the UWB Channel Characteristics , 2018, BODYNETS.

[11]  Vitaly Kirillov,et al.  In-body and on-body wave propagation: Modeling and measurements , 2017, 2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT).

[12]  Matti Hämäläinen,et al.  Impact of the Sternotomy Wires and Aortic Valve Implant on the On-Body UWB Radio Channels , 2018, 2018 12th International Symposium on Medical Information and Communication Technology (ISMICT).

[13]  K. Jaya Sankar,et al.  Study of RF Signal Attenuation of Human Heart , 2015 .

[14]  Ilangko Balasingham,et al.  Computational study of ultra-wideband wave propagation into the human chest , 2011 .

[15]  Erchin Serpedin,et al.  In Vivo Communications: Steps Toward the Next Generation of Implantable Devices , 2016, IEEE Vehicular Technology Magazine.

[16]  Ilangko Balasingham,et al.  Experimental Evaluation of Implant UWB-IR Transmission With Living Animal for Body Area Networks , 2014, IEEE Transactions on Microwave Theory and Techniques.

[17]  Akram Alomainy,et al.  Channel Characteristics and Wireless Telemetry Performance of Transplanted Organ Monitoring System Using Ultrawideband Communication , 2018, IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology.

[18]  Matti Hämäläinen,et al.  Human Body Shadowing Effect on Dynamic UWB On-Body Radio Channels , 2017, IEEE Antennas and Wireless Propagation Letters.

[19]  P. K. Saha,et al.  Propagation characteristics of ultra-wideband pulse in multilayered human chest tissue , 2016, 2016 3rd International Conference on Electrical Engineering and Information Communication Technology (ICEEICT).

[20]  Tor Sverre Lande,et al.  Vital Sign Monitoring Through the Back Using an UWB Impulse Radar With Body Coupled Antennas , 2018, IEEE Transactions on Biomedical Circuits and Systems.

[21]  Ilangko Balasingham,et al.  In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals , 2015, IEEE Journal of Biomedical and Health Informatics.

[22]  Jing Wang,et al.  A Human Tracking and Physiological Monitoring FSK Technology for Single Senior at Home Care , 2018, 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

[23]  Simon L. Cotton,et al.  Radiowave propagation characteristics of the intra-body channel at 2.38 GHz , 2017, 2017 IEEE 14th International Conference on Wearable and Implantable Body Sensor Networks (BSN).

[24]  Akram Alomainy,et al.  Anatomical Region-Specific In Vivo Wireless Communication Channel Characterization , 2017, IEEE Journal of Biomedical and Health Informatics.

[25]  P. S. Hall,et al.  Antennas and Propagation for Body-Centric Wireless Communications at Millimeter-Wave Frequencies: A Review [Wireless Corner] , 2013, IEEE Antennas and Propagation Magazine.

[26]  Lei Wang,et al.  Characterization of In-Body Radio Channels for Wireless Implants , 2017, IEEE Sensors Journal.

[27]  Ilangko Balasingham,et al.  Ultra-wideband statistical propagation channel model for implant sensors in the human chest , 2011 .

[28]  Yang Hao,et al.  Reverse recognition of body postures using on-body radio channel characteristics , 2017 .

[29]  A. Alomainy,et al.  Modelling and Characterisation of Radio Propagation from Wireless Implants at Different Frequencies , 2006, 2006 European Conference on Wireless Technology.

[30]  Ilangko Balasingham,et al.  Experimental Path Loss Models for In-Body Communications Within 2.36-2.5 GHz , 2015, IEEE Journal of Biomedical and Health Informatics.

[31]  Marta Cavagnaro,et al.  Measurement of Breath Frequency by Body-Worn UWB Radars: A Comparison Among Different Signal Processing Techniques , 2017, IEEE Sensors Journal.

[32]  Jari Iinatti,et al.  Measurement Data-Based Study on the Intrabody Propagation in the Presence of the Sternotomy Wires and Aortic Valve Implant , 2019, IEEE Transactions on Antennas and Propagation.

[33]  Yang Hao,et al.  Numerical Characterization and Link Budget Evaluation of Wireless Implants Considering Different Digital Human Phantoms , 2009, IEEE Transactions on Microwave Theory and Techniques.

[34]  Peter M. Asbeck,et al.  COMPUTATIONALLY EFFICIENT MODEL FOR UWB SIGNAL ATTENUATION DUE TO PROPAGATION IN TISSUE FOR BIOMEDICAL IMPLANTS , 2012 .

[35]  Narcis Cardona,et al.  Ultrawideband Technology for Medical In-Body Sensor Networks: An Overview of the Human Body as a Propagation Medium, Phantoms, and Approaches for Propagation Analysis , 2018, IEEE Antennas and Propagation Magazine.

[36]  Y. Hao,et al.  Modeling and Characterization of Biotelemetric Radio Channel From Ingested Implants Considering Organ Contents , 2009, IEEE Transactions on Antennas and Propagation.

[37]  Matti Hämäläinen,et al.  An Overview of the Electromagnetic Simulation-Based Channel Modeling Techniques for Wireless Body Area Network Applications , 2017, IEEE Access.

[38]  J. Iinatti,et al.  Comparison of the performance of the two different UWB antennas for the use in WBAN on-body communication , 2012, 2012 6th European Conference on Antennas and Propagation (EUCAP).

[39]  Daniel T. H. Lai,et al.  Galvanically Coupled Intrabody Communications for Medical Implants: A Unified Analytic Model , 2016, IEEE Transactions on Antennas and Propagation.

[40]  Ilangko Balasingham,et al.  Experimental ultra wideband path loss models for implant communications , 2016, 2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC).