| 摘要 |
A photographic capsule for diagnostic use in photographing a walled organ of the body such as a portion of the alimentary canal or the like includes a frame with a photographic unit and a balloon surrounding the photographic unit for expansion in place in the alimentary canal to smooth and space to a focal plane the walls of the portion to be photographed; the photographic unit making exposures through the balloon, illuminated by light relayed from outside the subject against a conical mirror through a fibre optics bundle within a shielding tube which also serves for retrieval, for holding signal leads, and as conduit for gas in inflating and deflating the balloon; in a preferred embodiment an electro-optical shutter is employed and a 360 DEG view is provided by means of annular coaxial structure of photographic lens, shutter, film and balloon.
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