A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
A61N 1/30 (2006.01) A61N 1/32 (2006.01)
Patent
CA 2084734
An iontophoresis drug delivery system includes a device which is attachable to the skin of an animal and having a drug reservoir, an electrolyte reservoir, and electrodes electrically communicating with the reservoirs and with the skin of the animal, An electronic circuit for controlling the rate or amount of current or voltage applied to the electrodes of the device includes a constant voltage and current generator, and a switching circuit for switching between applying either a constant current to the electrodes or a constant voltage. Current and voltage sensors are attached to the electrodes and provide feedback signals which are compared with predetermined threshold signals to control through feedback the amount of constant voltage and constant current applied to the electrodes.
Cette invention concerne un système d'administration de médicaments par ionophorèse qui comprend un dispositif à fixer sur la peau d'un animal et comportant un réservoir de médicament, un réservoir d'électrolyte et des électrodes en contact électrique avec lesdits réservoirs et la peau de l'animal. Un circuit électronique de régulation de la quantité de courant ou de la tension appliquée aux électrodes comprend un générateur de courant et de tension constants et un commutateur permettant d'appliquer aux électrodes soit un courant constant soit une tension constante. Les électrodes sont munies de capteurs de courant et de tension qui renvoient des signaux de rétroaction servant à réguler par comparaison à des valeurs de consigne la tension et le courant constants appliqués auxdites électrodes.
Haynes John L.
Sage Burton H. Jr.
Becton Dickinson And Company
Gowling Lafleur Henderson Llp
LandOfFree
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