Patent ID: 8517917
Filing Date: 2013-08-27
Classification: A61B,A61M

Abstract:
1. A capsule medical apparatus, comprising: a needle driving unit that punctures an internal region of interest in a subject with an injection needle and pulls out the injection needle from the internal region of interest; a liquid injection unit that injects a liquid into the internal region of interest through the injection needle that punctures the internal region of interest; and a leak prevention unit that prevents the liquid injected into the internal region of interest from leaking from the internal region of interest; wherein the leak prevention unit comprises a pressure suppressing unit that suppresses an increase in pressure of the liquid remaining inside the internal region of interest; wherein the pressure suppressing unit comprises: a suction unit that sucks a backflow liquid that is the liquid injected into the internal region of interest and that then flows back from the internal region of interest through the injection needle, a path for injecting the liquid into the internal region of interest being the same as a path for sucking the backflow liquid; and a communicated-state switching unit that switches its state from a communicated state between the injection needle and the liquid injection unit to a communicated state between the injection needle and the suction unit and vice versa.