Patent ID: 8439851
Filing Date: 2013-05-14
Classification: A61B

Abstract:
1. A lumen passability checking device comprising: an expandable and shrinkable outer casing that contains a predetermined fluid, is expanded by a pressure of the contained fluid, and forms an external diameter equal to that of a capsule medical device to be inserted into a body of a subject; and a shape manipulating unit that flows out the fluid contained in the outer casing to shrink-deform the outer casing, the shape manipulating unit comprising: wherein: the structure is an elastic member arranged in the dissoluble unit and having a through hole through which the fluid is injected, the dissoluble unit closes the opening part of the outer casing, and releases closure of the opening part when the dissoluble unit is dissolved by the substance in the body, along with releasing of the closure of the opening part, the outer casing flows out the fluid via the opening part to be shrink-deformed, and the outer casing is shrink-deformed by flowing out the fluid, while maintaining a state of being integrated with the shape manipulating unit.