Sampling structure of sample analyzer, sample analyzer and sampling method

Abstract

The invention relates to a device for transferring a sample to an analysis instrument, in particular to a sample introduction structure of a sample analyzer, a sample analyzer and a sampling method. The invention provides a sample introduction structure of a sample analyzer, comprising: a sample container placement part, at least two sample placement positions are arranged on the sample container placement part, each sample placement position can accommodate a sample container, and the sample The sample introduction structure of the analyzer also includes a limiting device, the limiting device has at least two limiting stations, when the limiting device is in any of the limiting stations, only the sample container can be placed One of the sample placement positions in the component is in a state capable of accommodating a sample container, and when a sample container is placed in one of the sample placement positions, the sample container prevents the limiting device from switching the limiting station.

Description

technical field [0001] The invention relates to a device for transferring a sample to an analysis instrument, in particular to a sample introduction structure of a sample analyzer, a sample analyzer and a sampling method. Background technique [0002] There are usually three sample delivery methods for the analyzer to perform sample measurement: (1) The sample delivery method of placing multiple sample containers with sealing plugs on the sample rack for continuous measurement of multiple samples (usually called automatic sampling) ; (2) The method of delivering a single sample from the sample container with the open cover to the sample aspirator (usually called open sampling); (3) The instrument provides a sample container rack, and the single sample container is placed in the sample container rack, and the instrument Automatically control the sample feeding method of the single sample measurement of the sample suction device (usually called closed sampling). Among them, t...

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Problems solved by technology

[0006] Although the above two schemes for implementing the sample delivery method (3) can meet the test requirements of various sample containers with different outer diameters, different lengths, or different shapes, scheme A requires the user to turn the sample container first. The sample container rack, and the sample container rack with a rotating structure is usually not small in size, and the rotation is inconvenient, which brings a burden to the user. When the number of insertion holes of the sample container rack is ≥ 3, it is easy to cause the sample container to be placed Wrong hole position; and plan B is easy to lose because the sample container rack is not fixed in the instrument, and when the number of sample container racks is ≥ 3, it is easy to use the wrong sample container rack

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