A probe device (10, 100, 200, 300, 400, 500) for use in the treatment of tissues that cover a body cavity by administering light of multiple wavelengths produced by a unit (18A) for emission of light in the body cavity, the probe device comprising a probe member (12) having a part thereof carrying a plurality of light sources (18), said part of the probe member (12) having a type configuration buffer with dimensions and shape suitable for insertion into the vagina, in which the probe member (12) is adapted for the treatment of the wall of the vagina comprising mucous membrane and submucosal layer； the light sources (18) being arranged in a three-dimensional series within said part of the probe member (12) and being constituted by optical windows coupled to the light emitting unit (18A)； the light emitting unit (18A) being configured and operable to produce light components that include yellow, to radiate said light components through said optical windows outward from said part of the probe member (12) towards the wall of the vagina of the body cavity to have an effect on vaginal tissue rejuvenation or bacterial vaginosis, characterized in that the light emitting unit (18A) is located outside said part of the probe member (12).Un dispositivo (10, 100, 200, 300, 400, 500) de sonda para su uso en el tratamiento de tejidos que revisten una cavidad corporal mediante la administración de luz de múltiples longitudes de onda producida por una unidad (18A) de emisión de luz en la cavidad corporal, comprendiendo el dispositivo de sonda un miembro (12) de sonda que tiene una parte del mismo que porta una pluralidad de fuentes de luz (18), teniendo dicha parte del miembro (12) de sonda una configuración de tipo tampón con dimensiones y forma adecuados para su inserción en la vagina, en el que el miembro (12) de sonda está adaptado para el tratamiento de la pared de la vagina que comprende membrana mucosa y capa submucosa； estando dispuestas las fuentes de luz (18) en una serie
