Patent ID: 8953031
Filing Date: 2015-02-10
Classification: A61B,G02B

Abstract:
1. A medical device comprising: an observation section that observes a field of view; a field-of-view switching mechanism that moves an area of the field of view observed by the observation section within a predetermined range by pivoting the observation section in accordance with movement operation by an operation portion; an illumination section that illuminates illumination light guided from outside of the operation portion, in a predetermined direction including the range through an illumination port; an illumination-light switching mechanism comprising a light outlet surface that emits the illumination light guided from the outside, and a light inlet surface that is opposed to the light outlet surface and allows the illumination light emitted from the light outlet surface and guided to the illumination port to enter therethrough, wherein the light outlet surface moves in relation to the light inlet surface, in accordance with the movement operation by the operating portion, and the illumination-light switching mechanism is provided inside the operation portion on a light guide path which guides the illumination light from the outside from the light outlet surface to the light inlet surface to selectively guide the illumination light to a part of the illumination port in accordance with movement operation of pivoting the operation portion; and a synchronous section provided inside the operation portion and comprising a mechanism that makes the illumination port that emits the illumination light to the field of view observed by the observation section selectively emit the illumination light, in synchronism with operation of the field-of-view switching mechanism that pivots the observation section by the movement operation by the operation portion, the synchronous section performing switching to make the illumination-light switching mechanism operate so as to selectively emit the illumination light to the light inlet surface, in synchronism with the operation of the field-of-view switching mechanism of moving the observation section to the range of the field of view, by pivoting the operation portion.