Patent ID: 8522628

Claim:
A liquid sample introducing apparatus having a mobile phase flow passage for introducing a sample into a liquid sample analyzing apparatus, comprising: a sample storage loop; a needle for sucking and discharging a sample; a first flow passage exchanging means having a sample injection port into which said needle is inserted, said first flow passage exchanging means exchanging whether separating said sample storage loop from said mobile phase flow passage and connecting said sample storage loop to said sample injection port or separating said sample storage loop from said sample injection port and connecting said sample storage loop to said mobile phase flow passage; a syringe means for accounting a sample and to suck a sample from a sample container into the needle and to discharge a sample into said sample storage loop from the needle; a washing tank into which said needle is inserted; a washing pump for feeding a washing solution; a second flow passage exchanging means for exchanging a connection and a separation of said needle with said syringe means, a connection and a separation of said needle and said washing pump, and a connection and a separation of said washing tank and said washing pump; a needle moving mechanism for moving said needle between an inner of said sample container, said sample injection port, and said washing tank; and a control unit for controlling operations of said first flow passage exchanging means, said syringe means, said washing pump, said second flow passage exchanging means, and said needle moving mechanism, wherein said second flow passage exchanging means connects said washing tank to and said washing pump in condition that said needle and said syringe means are connected with each other, and said washing pump feeds a washing solution to the inner of said needle and said washing tank through said second flow passage exchanging means.