The present application is directed to devices, assemblies, systems and methods for targeting one or more sites with electromagnetic radiation. The devices, assemblies and systems are operationally configured to transform and convey electromagnetic radiation to one or more targeted sites. The devices, assemblies and systems may also convey one or more fluids or fluid solutions to the one or more targeted sites.

Described herein are light therapy devices for treating pain. The devices generally include a plurality of light sources configured to stimulate photobiomodulation in tissue, and may be equipped with a safety mechanism configured to stabilize power and current distribution. Methods for treating pain using the light therapy devices are also described herein.

Methods and therapeutic devices with noninvasive means for improving brain function including memory and sleep, improving eye health, improving digestive system health and improving immune functions are described. The non-invasive means is selected from electrical stimulation, heat stimulation, IR (infrared) radiation, mechanical stimulation or their combinations. In some embodiments, the method and device utilize stimulation to selected skin area on human body to achieve desired therapeutical effects.

An electronic device includes a light emitting layer, a light conversion layer and an adjustable structure. The light emitting layer has a plurality of light emitting units for emitting light. The light conversion layer converts the wavelength of the light emitted by at least one light emitting unit to provide converted light. The adjustable structure is controlled to adjust a light penetrating area to correspond to the affected part to be treated, wherein at least one of the light and the converted light passes through the light penetrating area to irradiate the affected part.

In some implementations, a PDT system may include a probe assembly having an elongated cylinder having a probe inner diameter and a probe outer diameter optical surface and a probe tip positioned on a distal end, a therapy window positioned proximal the probe tip, a door positioned inside of the elongated cylinder and configured to move between an open position to expose the therapy window and a closed position to seal the therapy window, a balloon positioned within the inner probe diameter, a cylindrical light diffuser position inside of the balloon, and a detector fiber positioned proximate the cylindrical light diffuser.

In some implementations, a PDT system may include a probe assembly having an elongated cylinder having a probe inner diameter and a probe outer diameter optical surface and a probe tip positioned on a distal end, a therapy window positioned proximal the probe tip, a door positioned inside of the elongated cylinder and configured to move between an open position to expose the therapy window and a closed position to seal the therapy window, a balloon positioned within the inner probe diameter, a cylindrical light diffuser position inside of the balloon, and a detector fiber positioned proximate the cylindrical light diffuser.

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.

An attachment apparatus for use in combination with a known low-level laser therapy device. The apparatus is attachable to the front portion of, and operable with, a low-level laser therapy device for passing coherent light past the fur of an animal patient. The apparatus has a body with a plurality of pins that can be pushed through the fur, and which transmit a low-level laser therapy light to skin of the animal. The pins are composed of material that transmits the required light wavelength to the animal's skin.

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.