| abstract |
(57) [Abstract] [Purpose] To provide a peripheral circulation state detection device capable of accurately detecting a shock state of a living body. [Structure] Light emitting chip 1 in reflection type pulse wave sensor 10 6 and light receiving chip 20, light emitting chip 16 and light receiving chip 22 The light receiving chip 20 and the light receiving chip 22 receive reflected light from two points B and C having different depth positions from the surface of the skin 12, respectively. The intensity I of the reflected light is determined in step S2. The damping ratio K 2 / K 3 is calculated based on R2 and I R3 , and the variation ΔR of the damping ratio is calculated in step S4. The peripheral circulation state is determined based on the above, and the determination result is displayed in the abnormality display location 60. Further, in step S5, the change width W of the damping ratio K 2 / K 3 by the damping ratio K 2 / K 3 is displayed trend, that is, the change amount from the starting point of the change is displayed. |