Insertion device and photoacoustic measurement apparatus
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United States of America Patent
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Nov 26, 2019
Grant Date -
Jan 11, 2018
app pub date -
Sep 21, 2017
filing date -
Mar 31, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
The length of an optical fiber from a portion aligned with the rear end of an insertion needle to a fixing portion is a length obtained by adding a predetermined extra length to a linear distance between the rear end of the insertion needle in a case where the insertion needle is located at a protruding position (insertion position) and an optical fiber fixing position of a grip portion. There is provided a fiber feeding adjustment mechanism that suspends the optical fiber with a first suspension portion and a second suspension portion so as to make a detour in a state in which there is no slack, and changes the detour length continuously according to the movement of the insertion needle in a case where the insertion needle moves between the retracted position and the protruding position, thereby maintaining a state in which the optical fiber is suspended without slack.
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