Sample injection device for flow-type analyzer, flow-type analyzer, and the measurement method of the hemoglobin component

Comprising a tubular needle 27 which the upper and lower walls of the sample injection section 22 of the carrier liquid flow path penetrating through a ring-shaped seal members 25 and 26. The needle 27, within the bore 41 is opened as a lateral hole 42 on the outer circumferential surface closed by the lower end. By the needle moving unit 44, the lateral hole 42 by moving the needle 27 downwardly to face the container 40 of the sample, aspirating the sample into the needle 27. Thereafter, the lateral hole 42 by moving the needle 27 upward to face into the sample injection portion 22, injecting the sample in the needle 27. In the intermediate position, to eject the cleaning liquid from the lateral hole 42 of the needle 27, is recovered by drainage flow path 15.