A device for treating biological tissue including a body having opposed proximal and distal end portions, a shroud extending from the distal end portion of the body, and a light source supported at a distal end of the body and connected to a power source for emitting therapeutic light to treat biological tissue proximate to the shroud, wherein the shroud is dimensioned and configured to establish an effective distance and area of therapeutic light treatment relative to the biological tissue to be treated.

An implantable phototherapy device includes a power receiver element configured to receive power from an external power transmitter, a light delivery element powered by the power receiver, and configured to deliver phototherapy to a target treatment area, and a tether element is coupled to the light delivery element and the power receiver element. The tether element is configured to deliver power between the power receiver element and the light delivery element.

Methods are disclosed for reduction of muscle fatigue, enhancement of wound healing and tissue repair and/or reduction of pain. The methods comprise irradiating a muscle or an injured tissue of a subject, as applicable, with pulsed blue and/or red light having an average irradiance that ranges from 0.1 mW/cm.sup.2 to 20 mW/cm.sup.2 at a radiant exposure that ranges from 0.5 J/cm.sup.2 to 60 J/cm.sup.2. The pulsed blue and/or red light is preferably applied with a flexible light source that includes a flexible light emitter positioned between a flexible anode and a flexible cathode. The flexible light emitter may comprise a printed LED film or OLEDs that emit blue and/or red light, or a printed LED film or OLEDs that emit blue light in combination with a quantum dot film that converts a portion of the blue light emission into red light.

Illumination devices for impinging light on tissue, for example within a body cavity of a patient, to induce various biological effects are disclosed. Biological effects may include at least one of inactivating and/or inhibiting growth of one or more pathogens, upregulating a local immune response, increasing endogenous stores of nitric oxide, releasing nitric oxide from endogenous stores, and inducing an anti-inflammatory effect. Wavelengths of light are selected based on intended biological effects for one or more of targeted tissue types and targeted pathogens. Light treatments may provide multiple pathogenic biological effects, either with light of a single wavelength or with light having multiple wavelengths. Devices for light treatments are disclosed that provide light doses for inducing biological effects on various targeted pathogens and tissues with increased efficacy and reduced cytotoxicity. Illumination devices may be configured to communicate with networks and/or servers to provide control and/or management of phototherapy treatments.

A light treatment system includes: a probe configured to be inserted into a body cavity, the probe including an optical fiber configured to propagate light, and a light emitter that is provided at a distal end of the optical fiber, the emitter being configured to emit the light; a balloon catheter into which the probe is inserted, the balloon catheter including a distal end portion that is to be inserted into the body cavity and that is to be dilated by being supplied with a liquid including air bubbles; and an air bubble generator configured to generate the air bubbles to be included in the liquid and change a property of the air bubbles.

A multifunctional skin patch can be used during a treatment procedure to achieve one or more safety factors, including skin cooling, pain management, laser plume control, and/or proper application of the treatment. The multifunctional skin patch includes a transparent hydrogel layer that can be applied to a patient's skin prior to application of the treatment procedure. The treatment procedure can be conducted through the transparent hydrogel layer, and the transparent hydrogel layer (with can be pre-cooled) can cool and/or control pain within the portion of the patient's skin during and/or after the treatment procedure. In some instances, the multifunctional skin patch can also include a transparent indicator layer (covering at least a portion of the transparent hydrogel layer) with dispersed indicator particles attached thereto and/or embedded within. The indicator particles are configured to change in appearance upon application of treatment procedure through the transparent indicator layer.

An optically stimulating module to be integrated into a probe is implantable into a living being with a view to locally illuminating a region of said living being. The module includes a casing, and a hermetic electronic unit housed in the casing. The hermetic electronic unit includes two luminous diodes connected back-to-back, and at least two electrical contacts for connecting the module to an electrical power source.

Methods are disclosed for reduction of muscle fatigue, enhancement of wound healing and tissue repair and/or reduction of pain. The methods comprise irradiating a muscle or an injured tissue of a subject, as applicable, with pulsed blue and/or red light having an average irradiance that ranges from 0.1 mW/cm.sup.2 to 20 mW/cm.sup.2 at a radiant exposure that ranges from 0.5 J/cm.sup.2 to 60 J/cm.sup.2. The pulsed blue and/or red light is preferably applied with a flexible light source that includes a flexible light emitter positioned between a flexible anode and a flexible cathode. The flexible light emitter may comprise a printed LED film or OLEDs that emit blue and/or red light, or a printed LED film or OLEDs that emit blue light in combination with a quantum dot film that converts a portion of the blue light emission into red light.

A skin care device according to an embodiment includes a main body and a head part connected to the main body, wherein the head part includes a housing in which an upper portion thereof is open, and including an accommodation space therein, an electrode part disposed in the housing, a plurality of light emitting elements disposed in the housing and spaced apart from the electrode part, and a cover part for shielding of the open upper region of the housing, wherein the cover part includes a hole corresponding to the electrode part, a part of the electrode part protrudes from an upper surface of the cover part via the hole, and an upper surface of the electrode part facing a skin of a user includes a convex curved surface toward the skin.

A burden on a patient in light irradiation therapy is reduced, and treatment that is safe and takes reduced effort is enabled. A hook surface fastener that holds a cooling material of a light irradiating module so that the cooling material is in contact with the light irradiating module is provided on a rear surface of a band and a device pocket that holds a device performing at least one of power supply to and control of the light irradiating module is provided on a front surface of the band so as not to overlap with the hook surface fastener.