Methods, systems and devices for optical stimulation of...

A - Human Necessities – 61 – N

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A61N 5/06 (2006.01)

Patent

CA 2728238

Stimulation of target cells using light, e.g., in vivo, is implemented using a variety of methods and devices. In one such device, target cells are stimulated using an implantable device. The device includes a light source for producing light from electrical power. An optical transmission element is made from a material that is substantially transparent to the light from the light source. This transmission element substantially encases the light source at a proximal end. The transmission element delivers light from the light source to a distal end. The shape and size of the transmission element facilitates implanting of the element within a patient. A fixation portion physically couples to the optical transmission element and secures the device to the patient. A heat dissipation portion removes heat from the near optical transmission element and the light source and dissipates the removed heat through the fixation portion.

Selon l'invention, la stimulation de cellules cibles par de la lumière, par exemple, in vivo, est effectuée au moyen de divers procédés et dispositifs. Dans un desdits dispositifs, les cellules cibles sont stimulées au moyen d'un dispositif implantable. Le dispositif comprend une source lumineuse pour produire de la lumière à partir d'un courant électrique. Un élément de transmission optique est composé d'un matériau qui est sensiblement transparent à la lumière émise par la source lumineuse. Cet élément de transmission renferme sensiblement la source lumineuse au niveau d'une extrémité proximale. L'élément de transmission distribue la lumière de la source lumineuse à une extrémité distale. La forme et la taille de l'élément de transmission facilitent l'implantation de l'élément dans le corps d'un patient. Une partie de fixation est physiquement raccordée à l'élément de transmission optique et fixe le dispositif au patient. Une partie de dissipation de chaleur élimine la chaleur à proximité de l'élément de transmission optique et de la source lumineuse et dissipe la chaleur éliminée par la partie de fixation.

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