Specimen analysis disk and specimen analysis device

A disk and analysis area technology, applied in the field of sample analysis disks and sample analysis devices, can solve problems such as liquid leakage, seepage, and meeting hygiene requirements

Inactive Publication Date: 2008-06-25
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned conventional disk for sample analysis, the dispersion flow path must be configured in the direction of gravity, and the thickness of the disk must be set thick so that the sample reaching the dispersion flow path does not flow back into the guide flow path.
In addition, since the sample such as blood that reaches the dispersion flow path remains in a liquid state, it may splash from the opening of the injection part and ooze or leak from the connection part of the disk. It cannot be said that it meets the hygienic requirements.

Method used

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  • Specimen analysis disk and specimen analysis device
  • Specimen analysis disk and specimen analysis device
  • Specimen analysis disk and specimen analysis device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is a cross-sectional view of the disk for sample analysis in Example 1 of the present invention.

[0029] Such as figure 1 As shown, the disk 1 for sample analysis (hereinafter referred to as disk 1) is a disk-shaped substrate 2 and substrate 3 made of polycarbonate, etc. (not shown) and combined, the center has a shaft hole 4.

[0030] A reflective film 2a made of materials such as gold, silver, or aluminum is vapor-deposited on the surface of the lower substrate 2; the injection holes 5 arranged on the upper substrate 3 are separated by a certain interval in the circumferential direction near the shaft hole 4 It is provided through the substrate 3 in the thickness direction, and a groove open to the substrate 2 is formed between each injection hole 5 and the vicinity of the outer edge, and a flow path 6 along the radial direction is formed between the substrate 2 and the substrate 2 . These flow paths 6 are preferably provided at equal positions with re...

Embodiment 2

[0046] image 3 It is a front view of the disc for sample analysis in Example 2 of the present invention.

[0047] The disc 1 differs from the disc of the above-mentioned embodiment 1 in that each channel 6 is configured such that the channel width B at the outer peripheral end 6a is larger than the channel width A at the injection hole 5 side, and the channel width is A water absorbing member 8 is provided at the wider outer peripheral end portion 6a of B. In the outer peripheral end portion 6a having such a flow path width B, the water absorbing member 8 can be easily positioned and fixed.

Embodiment 3

[0049] Figure 4 It is a front view of the disc for sample analysis according to Example 3 of the present invention.

[0050] The disc 1 differs from the disc of the first embodiment above in that a narrow portion 18 is provided between the reagent portion 7 and the outer peripheral end portion 6 a in each channel 6 . Due to the presence of the narrow portion 18, the water absorbing member 8 can be easily and reliably positioned and fixed on the outer peripheral end portion 6a.

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Abstract

A specimen analysis disk ( 1 ) includes a channel ( 6 ) provided therein as extending from an injection hole ( 5 ) toward an outer periphery thereof, and is rotatable about an axis thereof by external rotation means to cause a liquid specimen injected into the channel ( 6 ) from the injection port ( 5 ) to flow through a reagent portion ( 7 ) in an analysis area provided midway in the channel toward the outer periphery, wherein a water absorbing member ( 8 ) is provided in an outer end portion ( 6 a) of the channel ( 6 ). Thus, the liquid specimen caused to reach the outer end portion ( 6 a) by a centrifugal force generated by the rotation is absorbed by the water absorbing member ( 8 ), so that the possibility of the back flow and scattering of the liquid specimen can be eliminated and the thickness of the disk can be reduced without the need for the provision of a sump extending in the direction of gravity.

Description

technical field [0001] The present invention relates to a disk for sample analysis and a sample analysis device. More specifically, the present invention relates to a disk for sample analysis and a sample analysis device for analyzing liquid samples such as blood and urine. Background technique [0002] A disk for sample analysis and a sample analyzer for analyzing liquid samples such as blood and urine are described in, for example, Japanese Patent Laid-Open No. 2001-124690. The disk for sample analysis described in this document is constituted by having an injection part, a guide flow path, and a dispersion flow path inside, and the disk with the sample injected into the injection part is mounted on the device and rotated around the axis. The sample in the injection part is introduced into the dispersion flow path at the periphery of the disk through the guide flow path under the action of centrifugal force, and the particle components in the dispersed sample are optically...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01N33/52G01N33/543G01N35/00G01N33/48B01D17/038B01L3/00G01N33/483G01N35/02G01N35/04
CPCG01N2035/00504B01L2400/0409B01L2200/082B01L2300/069G01N2035/0449G01N35/00069B01L2300/0803B01L2400/0688B01L2200/141B01L3/50273B01L2400/0633B01L3/5027
Inventor冈田谦二村上健二
OwnerPANASONIC CORP