Vijay Vaghani, ECE-Final Year, Poornima College of Engg. , Jaipur Vijay2vaghani@gmail.com
The invention of transistor enabled the first use of radiometry capsules, which used simple circuits for the internal study of the gastro-intestinal (GI) tract. They couldn't be used as they could transmit only from a single channel and also due to the size of the components. They also suffered from poor reliability, low sensitivity and short lifetimes of the devices. This led to the application of single-channel telemetry capsules for the detection of disease and abnormalities in the GI tract where restricted area prevented the use of traditional endoscopy. They were later modified as they had the disadvantage of using laboratory type sensors such as the glass pH electrodes, resistance thermometers, etc. They were also of very large size. The later modification is similar to the above instrument but is smaller in size due to the application of existing semiconductor fabrication technologies. These technologies led to the formation of "MICROELECTRONIC PILL". Microelectronic pill is basically a multichannel sensor used for remote biomedical measurements using micro technology. This is used for the real-time measurement parameters such as temperature, pH, conductivity and dissolved oxygen. The sensors are fabricated using electron beam and photolithographic pattern integration and were controlled by an application specific integrated circuit (ASIC). 2: INTRODUCTION
When Microelectronic pill is swallowed, then it will travel through the Gastro Intestinal Tract & simultaneously perform multi parameter in situ physiological analysis After completing its mission it will come out of the body by normal bowel movement The pill is 16mm in diameter & 55mm long weighing around 5 gram It records parameters like temperature, pH, Conductivity, & Dissolved Oxygen in real time. It measures the body core temperature. Also compensates...
References:  www.wikipedia.com
 Cane, C., I. Gracia, and A. Merlos, Microelectronics Journal.
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