Computer controlled drug delivery system with dynamic...

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/31 (2006.01) A61M 5/178 (2006.01) A61M 5/168 (2006.01)

Patent

CA 2673514

An apparatus and method for a controlled injection of a drug into a selected tissue of a subject by a practitioner, uses a drive unit for supplying the drug and a handpiece to be held and guided by the practitioner, connected to the drive unit for receiving the drug. The handpiece holds an injection needle to be inserted into the selected tissue by the practitioner for passing the drug to the selected tissue at an instantaneous and absolute pressure that varies as a function of the type of tissue and the placement of the needle. A pressure sensor senses this instantaneous pressure and a feedback mechanism supplies a perceptible audible, visual or other signal to the practitioner that indicates when the instantaneous pressure has reached a minimum desired pressure, the practitioner thus being informed that the correct placement and dosage has been attained.

Cette invention concerne un appareil et un procédé permettant à un praticien de contrôler l'injection d'un médicament dans un tissu donné chez un sujet. Ledit appareil utilise une unité de commande qui délivre le médicament et une pièce à main que le praticien saisit et guide, et qui est reliée à l'unité de commande de façon à recevoir le médicament. La pièce à main contient une aiguille à injection que le praticien insère dans le tissu donné pour injecter le médicament dans ledit tissu à une pression instantanée et absolue qui varie en fonction de la nature du tissu et de l'emplacement de l'aiguille. Un capteur de pression détecte cette pression instantanée et un mécanisme de rétroaction produit un signal sonore ou visuel, ou tout autre signal perceptible par le praticien qui indique à quel moment la pression instantanée atteint la valeur minimale souhaitée, ce qui informe le praticien de la mise en place correcte de l'aiguille et de l'obtention de la posologie voulue.

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