Biological fluid constituent sampling and measurement...

G - Physics – 01 – N

Patent

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Details

G01N 33/50 (2006.01) A61B 5/00 (2006.01) A61B 5/15 (2006.01) C25B 9/00 (2006.01) C25B 15/00 (2006.01)

Patent

CA 2389829

A device for accessing biological fluid, sampling biological fluid constituents and determining the concentration of at least one target constituent within the accessed biological fluid is provided. The device has at least one micro-piercing member used to penetrate the skin to a selected depth and to access biological fluid, a constituent sampling means and a constituent measuring means. The constituent sampling means comprises a constituent transfer medium, such as a hydrophilic gel material, by which sampled constituents are transferred from the micro-piercing member to the measuring means. The measuring means includes an electrochemical cell having at least one porous electrode through which at least one sampled constituent is caused to enter into the electrochemical cell. Methods of sampling constituents within the skin and measuring the sampled constituents, as well as kits for practicing the invention are provided.

L'invention concerne un dispositif servant à accéder à un liquide biologique, à prélever des échantillons des constituants du liquide biologique et à déterminer la concentration d'au moins un des constituants cibles. Le dispositif comprend au moins une composante de microperçage, qui pénètre dans la peau jusqu'à une profondeur déterminée pour accéder au liquide biologique, une composante permettant de prélever les échantillons de constituants et une composante servant à mesurer les constituants. La composante utilisée pour prélever les échantillons comprend un milieu de transfert, par exemple un gel hydrophile, à l'aide duquel les échantillons prélevés sont transférés de la composante de microperçage à la composante de mesure. La composante de mesure renferme une cellule électrochimique possédant au moins une électrode poreuse par laquelle au moins un des constituants prélevés est amené à passer pour pénétrer dans la cellule électrochimique. Des méthodes de prélèvement des échantillons dans la peau et de mesure des constituants prélevés, ainsi que des trousses d'utilisation de l'invention, sont fournies.

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