Surface injection device

Details Surface injection device Surface injection device

A - Human Necessities

61

M

A61M 5/30 (2006.01)

Patent

CA 2597561

A needle-free transdermal transport device (100) for non-axially transferring a substance across a surface of a biological body includes a reservoir (110) for holding a substance being transferred. A piston (105) is positioned within the device in communication with the reservoir (110) . An actuator (105) drives the piston (105) to expel the substance from the reservoir (110) . The reservoir (110) is in fluid communication with a nozzle (115) which includes at least one lateral aperture (145) through which the substance is expelled. Multiple lateral apertures (145) can result in a needle-free transfer across a selectable surface area. The depth and direction of an injection can be controlled by the parameters of the nozzle (115) . By providing a selective depth and direction, it is possible to inject a substance into a targeted biological layer, such as a cleavage plane to further promote coverage. A control source can be used to activate the device (100) . The device (108) can also include an optional power source (125) .

L'invention porte sur un dispositif de transfert transdermique non axial sans aiguille de substances à travers la surface d'un corps biologique, comportant: un réservoir contenant la substance à transférer; un piston communiquant avec le réservoir; et un actionneur agissant sur le piston pour expulser la substance du réservoir. Le réservoir communique par ailleurs avec une buse comportant au moins une ouverture latérale d'expulsion de la substance, plusieurs de ces ouvertures latérales permettant un transfert sans aiguille à travers une surface donnée. On peut régler la profondeur et la direction de l'injection en agissant sur les paramètres de la buse, cette possibilité de réglage rend possible l'injection d'une substance sur une couche biologique ciblée telle qu'un plan de clivage, de manière à améliorer encore la couverture. On peut utiliser une commande pour activer le dispositif. Le dispositif peut en outre comporter une alimentation facultative.

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