4.SUSTAINABLE PYROELECTRIC ENERGY AND POWER TRANSMISSION SYSTEM FOR MAINTENANCE-FREE HEART PACEMAKERS By SHUZA BINZAID

Abstract

A number of medical devices can be implanted inside the human body that has to be powered by battery, is the concern in this work. The medical costs become really high due to required maintenance after few years (about 7 years), associated with the battery replacement. A new solution is found where the pyroelectric materials can be used to recharge the battery of the implanted pacemakers that essentially increases the life of the battery beyond 10 times. So we create an ‘everlasting’ life of a pacemaker which can last for the lifetime and thus becomes maintenance-free without a need of surgery. This novel technique for an energy harvesting circuit is designed and results found to be very promising and applicable. The basic idea is to place cluster of pyroelectric materials over the skin of the patient, using specially fabricated clothes or body mask patches. These pyroelectric materials convert subtle differences in temperature across the span of the clothing into electricity and its voltage is boosted by a tiny electronic booster circuit. The interconnection is made to transmit electrical energy wirelessly to recharge the battery of implanted pacemaker by a coreless transformer. A relationship of power output and the distance of separation of the coils of coreless transformer are established and the data plot is presented in this paper. Also a set of data has been collected and plotted for both the generated power from the pyroelectric material and the voltage booster.
KEY WORD: Pyroelectric materials, Pacemaker, Integrated circuit,
Fabricated electric clothes, Voltage booster.