Development of Minimally Invasive Medical Device

Abstract

The endoscope is one of the most important procedure in cancer cell detection. The development of exible or rigid endoscopic technology has allowed the procedure to be performed using exible instrumentation, which can detect the pre-cancer cell. A exible or rigid endoscope is inserted into the human body. The endoscope is able to bend up to +and - 180 degree in X and Y axis. A distal end of the scope consists of a camera, LED light source and surgical ports. A camera module consisting of the camera sensor is utilized to get a clear picture of elements inside a human body structure. The conventional endoscope is used in a white light source for diagnosing cancer. Alternative or supplements of white light, the NBI light source is used. NBI provides improved visualization and detect the pre and post cancer.In this thesis work, experimentation setup of luminance and wavelength variation measurement with respect to distance is proposed and it is found form the experimentation obser- vation data that the luminance of all the three LEDs gives the su cient Lux for the endoscope application. For the NBI prospective, all the three LED are unable to give wavelength variation in NBI band which is required to diagnose cancel cells. so it is recommended to the company to explore more new LED source from the market which will suitable for NBI aspect. PWM based brightness control of LED using stmF732 microcontroller design also proposed and implemented in this project. Im- age processing algorithm is applied to detect the cervical cancer cell form the open source dataset and also real time endoscopic image.