Impedance sensor

Details Impedance sensor Impedance sensor

A - Human Necessities

61

M

A61M 5/142 (2006.01) A61M 37/00 (2006.01) A61M 5/158 (2006.01)

Patent

CA 2464673

A transdermal transport device includes a reservoir for holding a formulation of an active principle, a needle (14) with a bore through which the formulation is transported between the reservoir and a target area of a biological body, and an impedance sensor(32). The impedance sensor has an electrode positioned to measure the impedance of a portion of the target area between the needle and the electrode to indicate the depth of penetration of the needle into the target area.

Un dispositif de transport transdermique comprend un réservoir prévu pour contenir une formulation d'un principe actif, une aiguille (14) présentant un trou par lequel la formulation peut passer du réservoir à une zone cible d'un corps biologique et un capteur d'impédance (32). Le capteur d'impédance comporte une électrode qui est positionnée pour mesurer l'impédance d'une partie de la zone cible, entre l'aiguille et l'électrode, afin d'indiquer la profondeur de pénétration de l'aiguille dans la zone cible.

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