Muscle stimulating device and method for diagnosing and...

A - Human Necessities – 61 – N

Patent

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A61N 1/378 (2006.01)

Patent

CA 2306918

This invention is a device (30), a method for magnetic stimulation of muscles for the diagnosis, and relief of a breathing disorder, such as obstructive sleep apnea. Magnetic stimulation is used to stimulate muscles which serve to stabilize the upper airway of an individual whose nocturnal apneic events are related to diminished muscle tone. A sensor (38) monitors a physiologic characteristic of the patient, a coil (56) is energized to stimulate the appropriate muscles associated with the upper airway, a power supply provides power for energizing the coil (56), and a control system (32) controls the application of power to the coil (56) based on the output of the sensor (38). Diagnosis of obstructive sleep apnea is accomplished by measuring the subject's compliance in the presence, and absence of the magnetic stimulation of the upper airway muscles. The smaller the difference between these two compliance levels, the more likely that patient suffers from obstructive sleep apnea.

Cette invention se rapporte à un dispositif (30) et à un procédé de stimulation magnétique des muscles, en vue de diagnostiquer et de soulager des troubles respiratoires, tels que l'apnée obstructive du sommeil. On utilise la stimulation magnétique pour stimuler des muscles qui servent à stabiliser les voies respiratoires supérieures d'un individu dont les évènements apnéiques nocturnes sont à mettre en relation avec une diminution du tonus musculaire. A cet effet, un capteur (38) surveille une caractéristique physiologique du patient, une bobine (56) est mise sous tension pour stimuler les muscles appropriés associés aux voies respiratoires supérieures, une source de courant fournit le courant de mise sous tension de la bobine (56), et un système de commande (32) commande l'application de courant à la bobine (56) sur la base de la sortie du capteur (38). Le diagnostic de l'apnée obstructive du sommeil est réalisé par mesure de la compliance du sujet en présence et en l'absence de stimulation magnétique des muscles des voies respiratoires supérieures. Plus la différence est petite entre ces deux niveaux de compliances, plus il est probable que le patient souffre d'apnée obstructive du sommeil.

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