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Video cameras designed as a tiny, disposable-image pill that is swallowed by the patient and transmits endoscopic images from various locations along the gastrointestinal tract. These devices include a number of components, such as a color video camera, lights, a transmitter, an antenna, and appropriate batteries; the camera pills/capsules are usually part of a system that includes a recorder worn by the patient and a computerized unit to process and display the images. The patient swallows the pill/capsule, which then travels along the gastrointestinal tract by natural movement (i.e., peristalsis) and is eventually excreted. Endoscopic camera pills/capsules are used to detect abnormalities in the gastrointestinal tract (e.g., cancer lesions, telangiectasia), especially in areas of the small intestine that are difficult or impossible to view using endoscopes. They are also used to view the esophagus in the diagnosis and evaluation of esophageal diseases (e.g., gastroesophageal reflux disease, esophagitis, Barrett\'s esophagus, esophageal ulcer, esophageal varices).
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Video systems designed to examine various points along the intestinal tract using images captured with a tiny ingestible video camera. These systems typically consist of three components: a disposable ingestible camera pill/capsule that is swallowed by the patient and that transmits video images as it passes through the gastrointestinal tract, a recorder used by the patient (e.g., worn on a belt around the waist) that receives the signals transmitted by the camera, and a workstation appropriate for processing, displaying, and recording the images from the recorder. Ingestible camera endoscopic video systems are used to detect abnormalities in the gastrointestinal tract (e.g., cancer lesions, telangiectasias), especially in areas of the small intestine that are difficult or impossible to reach using endoscopes. They are also used for imaging of the esophagus to diagnose and evaluate esophageal diseases (e.g., gastroesophageal reflux disease, esophagitis, Barrett\'s esophagus, esophageal ulcers, esophageal varices).
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