Eye-safe photocosmetic device

A - Human Necessities – 61 – B

Patent

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A61B 18/20 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2618126

Devices and methods for treating tissue with radiation, including light and other optical radiation, in a manner that is eye-safe are described. In one embodiment, a photocosmetic treatment device has a cavity into which tissue to be treated is drawn. The device determines whether the tissue is safe to treat and whether the tissue may be tissue associated with the eyes, such as an eyelid. In another embodiment, an eye-safe pulse of radiation is provided at a time interval prior to treatment of the tissue. The pulse is at a wavelength of radiation that the human eye perceives as particularly intense and uncomfortable, even though the pulse is not dangerous or destructive. If the device is oriented to treat eye tissue, directly or through the eyelid, the pulse will cause an aversive reaction in the subject being treated that inhibits the treatment.

L'invention concerne des dispositifs et des procédés servant à traiter un tissu au moyen d'un rayonnement, y compris un rayonnement lumineux ou optique, de manière à ne présenter aucun danger pour l'oeil. Dans un mode de réalisation, un dispositif de traitement photocosmétique présente une cavité dans laquelle on recueille le tissu à traiter. Ce dispositif détermine si ce tissu peut être traité sans danger et s'il est associé aux yeux, tel qu'une paupière. Dans un autre mode de réalisation, une impulsion de rayonnement sans danger pour l'oeil est produite pendant un intervalle temporaire préalable au traitement du tissu. Cette impulsion possède une longueur d'onde de rayonnement que l'oeil humain perçoit comme étant particulièrement intense et inconfortable, même si elle n'est pas dangereuse ni destructrice. Si ce dispositif est orienté de façon à traiter le tissu oculaire, directement ou à travers la paupière, l'impulsion provoquera une réaction défensive chez le sujet en cours de traitement, ce qui empêchera ce dernier.

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