MEDICAL PHOTOMETER AND MEDICAL PHOTOMETER CONTROL METHOD
First Claim
1. A medical photometer comprising:
- a first light emitter that emits a first light beam having a first wavelength;
a second light emitter that emits a second light beam having a second wavelength;
a detector that outputs a first intensity-signal corresponding to an intensity of the first light beam that is transmitted through or reflected from a tissue of a living body, and a second intensity signal corresponding to an intensity of the second light beam that is transmitted through or reflected from the tissue;
a processor; and
a memory that stores an instruction readable by a computer,wherein, when the instruction is executed by the processor, the medical photometeracquires an intensity of one of the first intensity signal and the second intensity signal,acquires an intensity ratio of the first intensity signal and the second intensity signal, anddetects an artifact of the living body based on the acquired intensity and the acquired intensity ratio,both the first light beam and the second light beam are infrared light beams or red light beams,a ratio of a first extinction of a first light absorber at the first wavelength and a second extinction of the first light absorber at the second wavelength is different from 1,a third extinction of a second light absorber at the first wavelength is higher than the first extinction,a fourth extinction of the second light absorber at the second wavelength is higher than the second extinction, anda ratio of the third extinction and the fourth extinction is approximable by 1.
1 Assignment
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Accused Products
Abstract
A medical photometer includes a processor and a memory that stores an instruction readable by a computer. When the instruction is executed by the processor, the medical photometer acquires an intensity of one of a first intensity signal and a second intensity signal, the first intensity signal corresponding to an intensity of a first light beam that has a first wavelength and that is transmitted through or reflected from a tissue of a living body, and a second intensity signal corresponding to an intensity of a second light beam that has a second wavelength and that is transmitted through or reflected from the tissue of the living body acquires an intensity ratio of the first intensity signal and the second intensity signal, and detects an artifact of the living body based on the acquired intensity and the acquired intensity ratio.
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Citations
7 Claims
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1. A medical photometer comprising:
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a first light emitter that emits a first light beam having a first wavelength; a second light emitter that emits a second light beam having a second wavelength; a detector that outputs a first intensity-signal corresponding to an intensity of the first light beam that is transmitted through or reflected from a tissue of a living body, and a second intensity signal corresponding to an intensity of the second light beam that is transmitted through or reflected from the tissue; a processor; and a memory that stores an instruction readable by a computer, wherein, when the instruction is executed by the processor, the medical photometer acquires an intensity of one of the first intensity signal and the second intensity signal, acquires an intensity ratio of the first intensity signal and the second intensity signal, and detects an artifact of the living body based on the acquired intensity and the acquired intensity ratio, both the first light beam and the second light beam are infrared light beams or red light beams, a ratio of a first extinction of a first light absorber at the first wavelength and a second extinction of the first light absorber at the second wavelength is different from 1, a third extinction of a second light absorber at the first wavelength is higher than the first extinction, a fourth extinction of the second light absorber at the second wavelength is higher than the second extinction, and a ratio of the third extinction and the fourth extinction is approximable by 1. - View Dependent Claims (2, 3, 4, 5)
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6. A medical photometer comprising:
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a processor; and a memory that stores an instruction readable by a computer, wherein, when the instruction is executed by the processor, the medical photometer acquires an intensity of one of a first intensity signal and a second intensity signal, the first intensity signal corresponding to an intensity of a first light beam that has a first wavelength and that is transmitted through or reflected from a tissue of a living body, and a second intensity signal corresponding to an intensity of a second light beam that has a second wavelength and that is transmitted through or reflected from the tissue of the living body, acquires an intensity ratio of the first intensity signal and the second intensity signal, and detects an artifact of the living body based on the acquired intensity and the acquired intensity ratio, a ratio of a first extinction of a first light absorber at the first wavelength and a second extinction of the first light absorber at the second wavelength is different from 1, a third extinction of a second light absorber at the first wavelength is higher than the first extinction, a fourth extinction of the second light absorber at the second wavelength is higher than the second extinction, and a ratio of the third extinction and the fourth extinction is approximable by 1.
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7. A method of controlling a medical photometer comprising:
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causing the medical photometer to acquire an intensity of one of a first intensity signal and a second intensity signal, the first intensity signal corresponding to an intensity of a first light beam that has a first wavelength and that is transmitted through or reflected from a tissue of a living body has a first wavelength and that is transmitted through or reflected from a tissue of a living body, and the second intensity signal corresponding to an intensity of a second light beam that has a second wavelength and that is transmitted through or reflected from the tissue of the living body; causing the medical photometer to acquire an intensity ratio of the first intensity signal and the second intensity signal; and causing the medical photometer to detect an artifact of the living body based on the acquired intensity and the acquired intensity ratio, wherein a ratio of a first extinction of a first light absorber at the first wavelength and a second extinction of the first light absorber at the second wavelength is different from 1, a third extinction of a second light absorber at the first wavelength is higher than the first extinction, a fourth extinction of the second light absorber at the second wavelength is higher than the second extinction, and a ratio of the third extinction and the fourth extinction is approximable by 1.
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Specification