Biopsy using a magnetic capsule endoscope carrying, releasing, and retrieving untethered microgrippers.
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This paper proposes a new wireless biopsy method where a magnetically actuated untethered soft capsule endoscope carries and releases a large number of thermo-sensitive, untethered microgrippers (mu-grippers) at a desired location inside the stomach and retrieves them after they self-fold and grab tissue samples. We describe the working principles and analytical models for the mu-gripper release and retrieval mechanisms, and evaluate the proposed biopsy method in ex vivo experiments. This hierarchical approach combining the advanced navigation skills of centimeter-scaled untethered magnetic capsule endoscopes with highly parallel, autonomous, submillimeter scale tissue sampling mu-grippers offers a multifunctional strategy for gastrointestinal capsule biopsy. (+info)
Capsule-odometer: a concept to improve accurate lesion localisation.
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Role of colon capsule Pillcam 2 in obscure gastrointestinal bleeding - case report.
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INTRODUCTION: The diagnosis and management of gastrointestinal bleeding have always been a challenge to clinicians. In most patients, the source of bleeding is easily identified during conventional upper and/or lower gastrointestinal endoscopies. A significant progress in the evaluation of patients with obscure gastrointestinal bleeding was brought by the advent of capsule endoscopy. Since colonoscopy is not always technically feasible, colon VCE might be useful where the conventional procedure poses substantial risks to patients or it is refused by them. CASE-REPORT: We present the case of a 58-year-old patient, with severe anemia caused by bleeding from a gastrointestinal source. The patient was diabetic, hypertensive and with impaired heart function, aggravated by anemia. We used the Pillcam Colon 2 capsule to investigate the colon and we found 2 tumors in the cecum and transverse colon. CONCLUSION: Pillcam Colon 2 capsule turned out to be an additional patient-friendly method to complement colonoscopy for colon visualization and colorectal cancer screening. (+info)
Safety and utility of capsule endoscopy for infants and young children.
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Medical devices; gastroenterology-urology devices; classification of the colon capsule imaging system. Final order.
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The Food and Drug Administration (FDA) is classifying the colon capsule imaging system into class II (special controls). The special controls that will apply to the device are identified in this order and will be part of the codified language for the colon capsule imaging system's classification. The Agency is classifying the device into class II (special controls) in order to provide a reasonable assurance of safety and effectiveness of the device. (+info)