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US 2011/0300035 A1Published application
Autoanalyzer and pipetting nozzle for autoanalyzer
AssigneeHitachi High-Technologies Corporation
InventorsShinichi Taniguchi, Akihiro Nojima, Takashi Inoue, Hiroaki Ishizawa
Life of this patent
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Abstract
There is provided a highly reliable autoanalyzer less liable to sample and reagent carry-over and capable of preventing contamination and precisely pipetting samples and reagents. Using a sample pipetting nozzle 27 having water-repellent surfaces, a sample is pipetted from a sample cell 25 to a reaction cell 4 having a hydrophilic bottom face.
Claims9
1-8. (canceled)
An autoanalyzer comprising:
- a sample cell to put a sample in;
- a reagent container to put a reagent in;
- a reaction cell for the sample and the reagent to be injected into;
- a sample pipetting mechanism for pipetting the sample in the sample cell into the reaction cell;
- a reagent pipetting mechanism for pipetting the reagent in the reagent container into the reaction cell;
- wherein the sample pipetting mechanism includes a sample pipetting nozzle, and
- the sample pipetting nozzle includes a metal nozzle forming a surface of an inner wall of the sample pipetting nozzle and a water-repellent layer covering an outer wall and a tip of the metal nozzle, having electrical conductivity, and higher in water repellency than the inner wall.
4 more elements
A sample pipetting nozzle used in a sample pipetting mechanism of an autoanalyzer for pipetting a sample in a sample cell into a reaction cell,
- the sample pipetting nozzle comprising:
- a metal nozzle forming a surface of an inner wall of the sample pipetting nozzle;
- and a water-repellent layer covering an outer wall and a tip of the metal nozzle, having electrical conductivity, and higher in water repellency than the inner wall.
Dependencies are inferred from the claim text.