US 12,121,298 B2
Abnormality detection system, laser treatment device, and laser treatment system
Yoshiteru Tamura, Kyoto (JP); Yoshihide Okagami, Kyoto (JP); Akihito Hongo, Kyoto (JP); Katsumi Hiyoshi, Kyoto (JP); and Haruhiko Murakami, Kyoto (JP)
Assigned to J. MORITA MFG. CORP., Kyoto (JP)
Filed by J. MORITA MFG. CORP., Kyoto (JP)
Filed on Jul. 30, 2020, as Appl. No. 16/943,206.
Application 16/943,206 is a continuation of application No. PCT/JP2019/003096, filed on Jan. 30, 2019.
Claims priority of application No. 2018-013864 (JP), filed on Jan. 30, 2018.
Prior Publication US 2020/0352648 A1, Nov. 12, 2020
Int. Cl. A61B 18/20 (2006.01); A61B 1/12 (2006.01); G02B 23/24 (2006.01); A61B 18/00 (2006.01); A61B 18/22 (2006.01); A61B 90/00 (2016.01)
CPC A61B 18/201 (2013.01) [A61B 1/12 (2013.01); G02B 23/2476 (2013.01); A61B 2018/00011 (2013.01); A61B 2018/00023 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00863 (2013.01); A61B 2018/00982 (2013.01); A61B 18/22 (2013.01); A61B 2018/2247 (2017.05); A61B 2090/064 (2016.02)] 17 Claims
OG exemplary drawing
 
1. An abnormality detection system, comprising:
a laser transmission tube coupled with a laser treatment unit, oscillating laser light, to transmit the laser light, and a gas supply tube; and
a cooling portion fluid change detection portion detecting a change in a pressure of a cooling fluid flowing through a cooling space in the laser transmission tube,
the laser transmission tube including:
a lightguide tube having a lightguide space formed therein, through which the laser light is guided, the lightguide space being formed in a longitudinal direction,
the lightguide tube coupled to the gas supply tube to supply gas which flows through the lightguide space, and
an outer case enclosing an outer circumferential surface of the lightguide tube and extending in the longitudinal direction,
the cooling space being formed in the longitudinal direction between the lightguide tube and the outer case,
the cooling space including:
a forward-direction space causing the cooling fluid to flow in the longitudinal direction in a forward direction from a base end toward a tip end,
a backward-direction space causing the cooling fluid, after the cooling fluid flows through the forward-direction space, to flow in the longitudinal direction in a backward direction from the tip end toward the base end, and
a communication space communicating the forward-direction space and the backward-direction space to each other at the tip end, and
the cooling portion fluid change detection portion detecting the change in the pressure of the cooling fluid flowing in the backward-direction space to detect an abnormality.