Sample tray that supports barcode scanning on inner and outer rings

Abstract

The invention discloses a sample tray supporting bar code scanning of the inner and outer rings, which comprises a circular tray, an inner ring of reagent bottle holders and an outer ring of test tube holders distributed along the circumference of the tray, an inner ring of reagent bottle holders and an outer ring The test tube holders are staggered, and the inner optical path groove is formed between the adjacent outer ring test tube holders. Each outer ring test tube holder has a base and four claws extending upward from the upper surface of the base in a cantilever shape. The claws are arranged on the same circumference as a rectangle, and a front slot, a back slot and two side slots are formed between the four claws, and the width of the side slot is greater than the width of the front slot and the back slot. Since the width of the side groove is greater than the width of the front groove and the back groove, when the pitch of the outer ring test tube holder is constant, the width of the inner ring optical path groove through which the inner ring barcode scanning light passes reaches the maximum effective value, that is, Under the condition that the width of the optical path groove of the inner ring is constant, the pitch of the test tube holders of the adjacent outer ring reaches the minimum.

Description

technical field [0001] The invention relates to a sample tray capable of supporting barcode scanning of inner and outer rings. Background technique [0002] In the automatic biochemical analyzer, the sample tray is used to carry various test tubes containing samples or reagent bottles containing reagents, and performs intermittent rotating motions according to a certain program, and sends the sample test tubes or reagent bottles to extract samples or reagents. position for the sampling needle to extract samples or reagents. During the rotation of the sample disk, the program controls the light of the barcode scanner to accurately read the outer ring sample and the inner ring reagent or sample information at a certain incident angle. [0003] see figure 1 , the existing sample tray has a tray 7 and a test tube clamp 8 and a test tube holder 9 for clamping and positioning the outer ring test tube 5 . Since the test tube clamp 8 and the test tube holder 9 are two independent...

AI Technical Summary

Problems solved by technology

The sample tray has the following disadvantages: 1) Since the four claws are evenly distributed in the circumferential direction relative to the center of rotation, the optical path of the inner ring scanning light cannot reach the maximum effective width, and does not support the scanning of barcodes on the inner and outer rings with small pitches; The cross-sectional size is large, and the effective optical path cannot reach the widest; 3) The structure is only positioned through a positioning column, so the circumferential positioning of the structure relative to its center of rotation is not accurate, resulting in a large angular error in the optical path of the inner and outer rings

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