Multi-channel sample adding arm

Abstract

The invention relates to the technical field of pipetting arms, and discloses a multi-channel sample adding arm. The sample adding arm comprises a frame, a sample adding module guide rail and a synchronous belt; the sample adding module guide rail and the synchronous belt are installed on the inner wall of the frame in parallel, a sample adding module is installed on the sample adding module guide rail and the synchronous belt and comprises a sample adding module support, one side of the sample adding module support is fixed to a sliding block of the sample adding module guide rail, a sample adding module Z-direction driving motor and a Y-direction driving module are installed on the fixed side of the sample adding module support, a sample adding module Z-direction sliding mechanism is installed on the other side of the sample adding module support, the Y-direction driving module is connected to a synchronous belt, the sample adding module Z-direction driving motor is connected to the sample adding module Z-direction sliding mechanism through a transmission mechanism, and a sample adding pump is installed on the sample adding module Z-direction sliding mechanism; and a capacitance detection sheet and a pressure sensor are mounted on the sample adding pump. The multi-channel sample adding arm provided by the invention can realize non-equidistant sample adding of experimental samples and reagents, and has capacitive sensing and pressure sensing liquid level detection functions, so the universality is enhanced.

Description

technical field [0001] The invention relates to the technical field of a multi-channel sample loading arm, in particular to a multi-channel sample loading arm. Background technique [0002] In the field of in vitro diagnostic medical devices, the distribution of samples or reagents requires the use of multi-channel sample loading arms. In the existing multi-channel sample loading arms, the spacing between the sample loading channels is fixed or adjustable. and generally work at the same time, its flexibility is not high, especially for the distribution of reagents, due to the different sizes of reagent bottles of different types and different manufacturers, it is difficult to meet the needs of fixed-spaced and adjustable equal-spaced sampling channels. sample needs. [0003] In addition, pressure surface detection is required before sample or reagent distribution. The existing sample loading arm generally only has a single pressure-sensing liquid level detection function or...

AI Technical Summary

Problems solved by technology

[0002] In the field of in vitro diagnostic medical devices, the distribution of samples or reagents requires the use of multi-channel sample loading arms. In the existing multi-channel sample loading arms, the spacing between the sample loading channels is fixed or adjustable. and generally work at the same time, its flexibility is not high, especially for the distribution of reagents, due to the different sizes of reagent bottles of different types and different manufacturers, it is difficult to meet the needs of fixed-spaced and adjustable equal-spaced sampling channels. sample demand

[0003] In addition, pressure surface detection is required before sample or reagent distribution. The existing sample loading arm generally only has a single pressure-sensing liquid level detection function or a single capacitive detection liquid level detection function. Due to the pressure-sensing liquid level detection Bubbles are easy to be generated during the process, and the explosion of bubbles will cause pollution to experiments such as nucleic acid detection, so it cannot be used for experiments such as nucleic acid detection, while capacitance detection can only be used for the test of target liquid conductivity, and its use has certain limitations

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