Assignors: BONNET, LUDWIG Application granted granted Critical Publication of US5307804A publication Critical patent/US5307804A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links reassignment RICHARD WOLF GMBH A GERMAN CORP. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to DE4105326 priority Critical Priority to DE4105326A priority patent/DE4105326C2/de Application filed by Wolf Richard GmbH filed Critical Wolf Richard GmbH Assigned to RICHARD WOLF GMBH A GERMAN CORP. Original Assignee Wolf Richard GmbH Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US07/825,210 Inventor Ludwig Bonnet Current Assignee (The listed assignees may be inaccurate. Google Patents Endoscope having a camera coupled theretoĭownload PDF Info Publication number US5307804A US5307804A US07/825,210 US82521092A US5307804A US 5307804 A US5307804 A US 5307804A US 82521092 A US82521092 A US 82521092A US 5307804 A US5307804 A US 5307804A Authority US United States Prior art keywords endoscope objective camera rotation gravity Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5307804A - Endoscope having a camera coupled thereto Such efforts made development in medical practice, and the gastrocamera made contributions to early detection of stomach cancer.US5307804A - Endoscope having a camera coupled thereto The development and perfection of the gastrocamera progressed quickly, and the device became widely accept by many doctors. Olympus consistently worked on a camera that (1) presented no danger to the patient, (2) created minimal discomfort, (3) allowed photographing of any part of a stomach in a short amount of time, and (4) delivered crisp images for easier diagnosis. The development team at Olympus, and doctors at the University of Tokyo Medical Center, continued working to overcome many challenges and difficulties. This device, however, was still too primitive for adequate clinical use. The film had to be wound up by pulling a wire. Images were captured on monochrome film by photoflashing miniature light bulb in vitro, activated manually. The instrument was equipped with a photographic lens located at the tip of the flexible tube. In 1950, researchers, having gone through some tremendous ordeals, finally unveiled the first prototype. Researchers had to discover their own way and overcome obstacles through many futile trials and errors. There were many difficulties including: producing extremely small lenses, discovering strong sources of illumination, searching materials for flexible tubes and the most appropriate films, as well as water leakage prevention measures. Olympus undertook this difficult challenge, and the historic development of gastrocameras began. (currently Olympus Corporation) to develop a camera that could photograph and examine of the interior of a patient's stomach. In 1949, a doctor working at the University of Tokyo Medical Center requested Olympus Optical Co.,Ltd. The first attempts to develop a gastrocamera were made by Lange and Meltzing of Germany in 1898, but they fell short of developing a device for practical use.
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