1. Wireless ECG Monitoring System Adviser: Hung-Chi Yang Speaker: Yu-Ming Chen Dina Simunic, Slaven Tomac, Ivan Vrdoljak University of Zagreb, Faculty of Electrical Engineering and Computing Unska 3, 10000 Zagreb, Croatia * Centar za telemedicinu d.o.o. Prilaz Gj. Dezelica 59, 10000 Zagreb, Croatia 2010/9/30 1

2. Outline IntroductionProductsConclusion 2

3. Introduction Telemedicine ： Communications and information technologies Basis of two concepts ： 1.Real time (synchronous) 2.Store-and-forward (asynchronous) 2.Store-and-forward (asynchronous) Telehealth ： 1.Preventive 2.Promotive 2.Promotive 3.Curative aspects 3.Curative aspects 3

4. Introduction StoreForward

5. Purpose 5 ● The wireless cardiac monitoring system allows patients to be monitored continuously for an extended, unlimited period and has been effective in the diagnosis of clinically significant, symptomatic, and asymptomatic cardiac arrhythmias. Furthermore, the technology has the potential to reduce patient error, enhance diagnostic accuracy, decrease time to diagnosis, and improve patient care.

6. Products Typical cardiac pacemaker battery pack size (in millimeters). 6 1. Classical Ambulatory Cardiac Monitoring System 2. Wireless Cardiac Monitoring System

7. Classical Ambulatory ※ Holter monitoring ※ Cardiac event monitor ※ Continuous loop recorder

8. EFFECTIVE ELECTRICAL PARAMETERS OF DIFFERENT SUBSTRATES ANDSUPERSTRATES( POWER IS GIVEN AT 1 m WHEN MAX 1-g SAR = 1.6W/kg 8 ※ Holter monitoring

9. 9 ※ Cardiac event monitor

10. 10 ※ Continuous loop recorder

11. 11 Wireless Cardiac Monitoring System

12. (a)(b) 12 1.Lightweight, 2.High mobility 3.Wireless transmission 4.Low power Properties

13. (a) (b) 13

14. (a) 14 Application 1.At home 2. In hospital

15. 15 1.600 Hz, with A/D 12 bit resolution 2.Frequency range 0.05-100 Hz (-3dB) 3.Dynamic range 16 Mv 4.DC offset tolerance +/- 300 Mv 5.Input impedance 100 MOhm 6.Storage frequency 600 Hz, 300 Hz or 150 Hz 7.Memory capacity from 8to 60 minutes 8.Up to 3 independent bipolar or 5 independent unipolar ECG channels. Bluetooth ECG samples data

16. 16 The protocol consists of three phases 1. The Bluetooth connects the ECG-monitor and the computer, whereas the ECG-monitor sends confirmation of the realized connection with a dedicated frame. 2. Real-time monitoring mode 3. Take out of the total data (including sync) the «useful» data

17. 17 SyncLengthCommandData to trasmitCheksum Framework Structure

18. PERMITTIVITIES AND CONDUCTIVITIES FOR TISSUES OF THE REALISTIC SHOULDER AT 433 MHz FROM 18 Data Sets IDDescription 0 System information System information 1 Schedule Schedule 2 ECG data ECG data 222 Index file Index file 255 Real time data Real time data

19. Bluetooth Connection EventPossible Bluetooth RetrievalActive Bluetooth mode

20. Wireless ECG Technology Interface

22. Wireless ECG Technology Security 1. 1. Every Bluetooth device has unique IEEE MAC address (48bits) 2. Frequency Hopping Spread Spectrum is being applied with low transmitter power 3. Bluetooth security protocol requires 2 secret keys: a. authentication key (128-bits) b. encription key (8-128-bits)

23. Conclusion 在日常生活中，無線心電監護系統，不僅可以用在家裡， 也可以用在臨床監測或救護車。因此，在運送病人時它也 無需分離或重新附加導線。這真是一個方便的 ECG 監測儀 器。 在日常生活中，無線心電監護系統，不僅可以用在家裡， 也可以用在臨床監測或救護車。因此，在運送病人時它也 無需分離或重新附加導線。這真是一個方便的 ECG 監測儀 器。 23

24. Thank you For your attention 24