This project deals with implementing wireless power transfer for pacemakers to avoid risks of battery replacement surgery. The system uses electromagnetic induction with a transmitting coil powering a receiving coil inside the implanted medical device. It allows charging the pacemaker battery without wires, improving patient quality of life and reducing economic costs compared to periodic device replacement once batteries expire. Future applications of this wireless charging technology could benefit other implantable medical devices.

1. WIRELESS POWER TRANSFER FOR MEDICAL IMPLANTS
PROJECT GUIDE: PROF T.DINESHKUMAR
STUDENT’S NAME:
K.R.PAVITHRA(12BEE035)
M.S.SATHEES KUMAR(12BEE045)
P.SUPRIYA(12BEE052)
KUMARAGURU COLLEGE OF TECHNOLOGY
DEPARTMENT OF ELECTRICAL AND ELECTRONICS
ENGINEERING

2. CONTENTS
• INTRODUCTION
• EXISTING METHOD
• OBJECTIVE OF THE PROJECT
• BLOCK DIAGRAM
• CIRCUIT DIAGRAM
• METHODOLOGY
• HARDWARE COMPONENTS
• SNAP SHOT OF HARDWARE
• CONCLUSION AND FUTURE SCOPE
• REFERENCES

3. • Implantable medical devices help manage a broad range of medical
disorders through preventive and post-surgery monitoring.
• In order to avoid the risks associated with battery replacement and enable
miniaturization of the implant, wireless delivery of energy to these devices
is desirable.
• This project deals with the implementation of wireless power transfer
especially in case of pacemaker device used in heart problems.
INTRODUCTION

4. • In present day technology, the device named artificial pacemaker is used to
pump human heart when natural pumping cannot be done.
• But this device cannot be recharged .It can only be replaced after a specified
time.
• In the existing pace maker device the battery is not rechargeable .
• Lifetime of the battery is only for 3 years.
• It is uneconomical as the device has to be changed periodically.
EXISTING METHOD

5. OBJECTIVE OF THE PROJECT
• The design of a Wireless Power Transfer system based on magnetic
resonant coupling between two coils, whose secondary is located
inside the human body and connected to a battery recharge system of
an active implantable medical device.
• Since wireless power transfer technology gains its popularity, broad
range of application and research are performed in the field of medical
implantable applications.

6. BLOCK DIAGRAM
Power
supply
Battery Display
Signal
conditioning
unit
ADC
Embedded
system
Keypad
High
frequency
inverter
Transmitting
coil
Receiving
coil
Rectifier and
Filter
Battery Implant
Transmitting side
Biomedical implant receiving side

7. CIRCUIT DIAGRAM

8. BIOMEDICAL IMPLANT RECEIVING SIDE

9. METHODOLOGY
• Electromagnetic induction principle is used where there is a
transmitting and a receiving side.
• The dc power is given to various blocks for operation. Embedded
system is used for controlling the operation. The dc power is
converted to ac using high frequency inverter and is transmitted using
coils.
• The transmitted ac is rectified again to dc and stored in the battery
located in the pace maker.

10. •POWER SUPPLY
• TRANSFORMER
•BATTERY
•SIGNAL CONDITIONING UNIT
•EMBEDDED SYSTEM
•ADC
•KEYPAD
•HIGH FREQUENCY INVERTER
•RECTIFIER
•IMPLANT
HARDWARE COMPONENTS

11. SNAP SHOT OF HARDWARE

12. TRANSMISSION UNDER OFF CONDITION

13. TRANSMISSION OFF

14. TRANSMISSION UNDER ON CONDITION

15. TRANSMISSION ON

16. CONCLUSION AND FUTURE SCOPE
• This project results in efficient design of artificial pacemaker to enhance the
heart beat without using transmitting wires.Thus,it reduces the human
burden to a larger extent as the device need not be replaced once it is
embedded inside the human system.
• It is also very economical in the receiver point of view. So,this technology
has a best scope in the future which can be implemented in medical
technologies.

17. REFERENCES
• I. C. Forster, “Theoretical design and implementation of a
transcutaneous, multichannel stimulator for neural prosthesis
applications,” J.Biomed. Engng., vol. 3, pp. 107–120, Apr. 1981.
• N. N. Donaldson and T. Perkins, “Analysis of resonant coupled coils in
the design of radio frequency transcutaneous links,” Med. Biol. Eng.
Comput., vol. 21, pp. 612–627, Sep 1983.
• E. S. Hochmair, “System optimization for improved accuracy in
transcutaneous and power transmission,” IEEE Trans. Biomed. Eng.,
vol. 31, pp. 177-186,Feb 1984
• U. Jow and M. Ghovanloo, “Design and optimization of printed spiral
coils for efficient transcutaneous inductive power transmission,” IEEE
Trans. Biomed. Circuits Syst., vol. 1, pp. 193–202, Sep. 2007.

18. • A. S. Y. Poon, S. O’Driscoll, and T. H. Meng, “Optimal frequency for wireless power
transmission into dispersive tissue,” IEEE Trans.Antennas And Propagation, vol.
58, pp. 1739–1750, May 2010.
• S. Kim and A. S. Y. Poon, “Optimal transmit dimension for wireless powering of
miniature implants.” Antennas and Propagation Society International Symposium
(APSURSI), July 2011.
• R. F. Harrington, Time-Harmonic Electromagnetic Fields. IEEE Press,2001.
• W. C. Chew, Waves and Fields in Inhomogeneous Media. IEEE Press,
1995.
• S. Gabriel, R. W. Lau, and C. Gabriel, “The dielectric properties of biological
tissues: III. Parametric models for the dielectric spectrum of tissues,” Phys. Med.
Biol., vol. 41, pp. 2271–2293, Nov. 1996.
• “IEEE standard for safety with respect to human exposure to radiofrequency
electromagnetic fields, 3 kHz to 300 GHz.” IEEE Standard C95.1-1999, 1999.