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Journal of Medical Systems

, Volume 29, Issue 5, pp 501–512 | Cite as

A New Microcontroller-Based Human Brain Hypothermia System

  • Metin Kapıdere
  • Raşit Ahıska
  • İnan Güler
Article

Abstract

Many studies show that artificial hypothermia of brain in conditions of anesthesia with the rectal temperature lowered down to 33C produces pronounced prophylactic effect protecting the brain from anoxia. Out of the methods employed now in clinical practice for reducing the oxygen consumption by the cerebral tissue, the most efficacious is craniocerebral hypothermia (CCH). It is finding even more extensive application in cardiovascular surgery, neurosurgery, neurorenimatology and many other fields of medical practice. In this study, a microcontroller-based designed human brain hypothermia system (HBHS) is designed and constructed. The system is intended for cooling and heating the brain. HBHS consists of a thermoelectric hypothermic helmet, a control and a power unit. Helmet temperature is controlled by 8-bit PIC16F877 microcontroller which is programmed using MPLAB editor. Temperature is converted to 10-bit digital and is controlled automatically by the preset values which have been already entered in the microcontroller. Calibration is controlled and the working range is tested. Temperature of helmet is controlled between −5 and +46C by microcontroller, with the accuracy of ± 0.5C.

Keywords

microcontroller brain hypothermia thermoelectric cooler 

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Electronics and Computer Education DepartmentFaculty of Technical Education Gazi UniversityTeknikokullarAnkara-Turkey

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