Wearable device for limb of the human body for photobiomodulation therapy, and related system

Abstract

The present invention relates to a wearable device for photobiomodulation of a limb of the human body, comprising a lower flexible portion (1) and an upper flexible portion (2). The device includes light-emitting sources (6) arranged in circuits (7) along the inner surface of a flexible support layer (5). The light-emitting sources (6) are configured to emit light at a wavelength in the range of 660 to 810 nm and to have an irradiance in the range from 5 mW / cm2 to 100 mW / cm2. The wearable device is configured to fully surround a limb of the human body, for example, the shin and the thigh of the lower limb, as well as to provide a substantially constant power of the light emitted per area of the skin throughout the treatment.

Description

Wearable device for a human body part for photobiomodulation therapy and related system.

[0001] The present invention relates to a wearable device for a human limb with applications in photobiomodulation therapies.

[0002] Photobiomodulation, also known as low-level light therapy or low-power laser therapy, is a therapeutic process that uses low-intensity light to stimulate biological processes in the body's cells. This technique has been studied and applied in various areas of medicine and aesthetics due to its potential benefits.

[0003] During photobiomodulation, cells absorb light emitted by light-emitting sources, such as lasers or low-power light-emitting diodes (LEDs) at specific wavelengths. This light is then converted into energy that triggers a series of biochemical reactions within the cells. These reactions may include increased production of ATP (adenosine triphosphate), which is the main source of cellular energy, increased protein production, and modulation of inflammatory processes.

[0004] Photobiomodulation is particularly relevant in the treatment of sports injuries, as it can relieve pain associated with muscle injuries and chronic pain, aid in muscle recovery after intense exercise or injuries, and promote the reduction of inflammation.

[0005] In photobiomodulation, the power and wavelengths used in light-emitting sources can vary depending on the specific application and the conditions to be treated. The power of light-emitting sources used in photobiomodulation is generally low to moderate intensity. Commonly used power levels range from a few milliwatts to a few tens of watts, depending on the area to be treated and the desired depth of penetration.

[0006] The specific wavelengths used in photobiomodulation can have different biological effects. Wavelengths in the red region of the electromagnetic radiation spectrum (620 nm to 750 nm) are frequently used to promote wound healing, stimulate cell regeneration, reduce inflammation, and alleviate pain. Light with wavelengths in the near-infrared region of the electromagnetic radiation spectrum (700 nm to 1100 nm) is more penetrating into the tissue layers of the skin, and these wavelengths are frequently used to promote deeper wound healing, reduce muscle and joint pain, and stimulate tissue regeneration. The blue wavelength (400 nm to 570 nm) is frequently used to treat skin conditions such as acne due to its antibacterial and anti-inflammatory properties.Green wavelengths (500 nm to 570 nm) can be used to reduce skin hyperpigmentation and stimulate cell regeneration.

[0007] The power per area of ​​skin for wavelengths in the red region (620 nm to 750 nm) can vary depending on the type of device, including light sources used, the light intensity, and the area to be treated. Generally, power per area is expressed in units such as milliwatts per square centimeter (mW / cm²).

[0008] Power per area of ​​skin is an important factor to consider to ensure that the light dose is adequate for therapy, without causing damage or adverse effects. For therapies with red LEDs, the power per area generally ranges from about 5 mW / cm² to 100 mW / cm², depending on the specific treatment protocol and patient characteristics. Limitations of the Previous Technique

[0009] The state of the art presents several devices for therapeutic applications using photobiomodulation, for example, handheld devices with an attached light source, where an operator with physiotherapy knowledge or the injured athlete themselves holds the device and points it at the part of the body to be treated. This type of device has the disadvantages of being inconvenient due to the need for manual handling, requiring a third person to perform the treatment, and not freeing the athlete for other tasks while the treatment is being carried out.

[0010] In the state of the art, there are also known blankets and mats of substantially rectangular shape that are sized to cover a specific region of the human body limb, for example the knee, calves, or thigh. An example of this type of blanket is described in US patent application US2007129776A1, by Anthony J. Robins et al., published on June 7, 2007. These blankets and mats have a first limitation related to the fact that they are not suitable for the complete treatment of the human body limb. Additionally, they present a second limitation due to their reduced capacity to adequately envelop the region of the human body limb, causing the power of the emitted light not to reach the skin covered by the blankets and mats uniformly, which certainly compromises the effects of the photobiomodulation treatment.

[0011] Proper and rigorous control of the power of light emitted per area of ​​skin is a crucial factor for the efficiency of photobiomodulation treatment. It is essential that this parameter be as uniform as possible across the entire area of ​​the human body being treated. In this sense, handheld devices with attached light sources present an obvious disadvantage: it is practically impossible for the user to manually direct the light source towards the skin while strictly maintaining the distance between the light source and the skin. Blankets and mats with a substantially rectangular shape do not allow for adequate fixation to the contours of the human body, meaning that as the blankets are folded around the leg or arm, some light sources end up closer to the skin than others, significantly compromising the control of the power of light emitted per area of ​​skin.

[0012] In order to solve these state-of-the-art problems, the international patent application WO2019217458A1 by Daniel Gerard Schupp, published on November 14, 2019, discloses a wearable device including a plurality of light sources that can be used to cover all or part of a human body limb or the upper or back of the human body. The wearable device described in this patent application has the advantage that the light sources, for example, light-emitting diode (LED) strips, are arranged close to the user's skin. To this end, the said wearable device uses a support fabric for the LEDs with flexible, compressible, and elastic characteristics. Additionally, the LED sources themselves and the sensors must be elastic so that the wearable device can conform as a whole to the contours of the human body part.

[0013] While the wearable device disclosed in international patent application WO2019217458A1 has the advantage of high adaptability to the contours of the human body, considering its flexible, compressible, and elastic characteristics, this device presents a limitation linked to the elasticity of the LED support fabric itself. When worn by the user, the wearable device will naturally be stretched in some areas of the body and compressed in others, causing the original distance between the light sources to change. This will inevitably alter the power of the light emitted per area of ​​skin as originally measured, also compromising the control of this crucial parameter for photobiomodulation treatment.

[0014] Therefore, there is a need to develop a technical solution that allows for the establishment of usage conditions that do not alter the parameters designed for the power of light emitted per area of ​​skin, while enabling the complete coverage of a limb and being a comfortable solution for use by the person undergoing treatment. Solution to the Limitations of the State of the Art

[0015] The present invention solves the limitations of the prior art by developing a wearable device for a human body limb for photobiomodulation therapy that is configured to completely envelop a human body limb, for example the lower (leg) and upper (thigh) portions of a lower limb and the lower (arm) and upper (forearm) portions of an upper limb, including the respective joint regions. Photobiomodulation is performed by a plurality of light-emitting sources (6) arranged on a flexible support layer (5), this flexible support layer (5) having adequate flexibility to envelop the human body limb while maintaining regularity of the distance between the light-emitting sources (6) and the skin.On the other hand, the flexible support layer (5) does not exhibit elastic or compressible characteristics, so that as the flexible support layer (5) wraps around the human body limb, the light emission sources (6) are not subject to changes in their relative position. Therefore, the wearable device is configured to provide a substantially constant light emission power per skin area throughout the treatment.

[0016] In another particularly preferred embodiment, the wearable device has a layer including an inflatable air chamber (11), which can be pressurized and, given the positive pressure of the air chamber (11), creates pressure on the flexible support layer (5), which results in greater proximity between the light emission sources (6) and the skin, without compromising the standardization of the distances between the light emission sources (6), i.e., optimizing the ability to provide substantially constant light emitted power per skin area throughout the photobiomodulation treatment. Advantageous Effects of the Invention

[0017] The wearable device contributes to the technical effect of providing a substantially constant light intensity per area of ​​skin throughout the treatment, allowing photobiomodulation treatment to be more efficient and controllable, making its results more predictable. Proper control of the light intensity per area of ​​skin is crucial to avoid exposing a particular region of skin to higher irradiance than another, which could result in adverse effects in one area while rendering the treatment ineffective in others.

[0018] The wearable device according to the invention can be used efficiently and practically in the treatment and physical recovery of athletes after sports practice. Considering its advantages in the precise control of irradiance that is effectively transmitted to the user's skin, the wearable device is particularly advantageous in the physical recovery of a high-performance or high-competition athlete.

[0019] The wearable device is especially indicated for the treatment and healing of wounds, stimulating cell regeneration, reducing inflammation, and relieving pain, particularly in the dermis layer, which are often invisible but affect an athlete's performance if timely treatment is not provided. Physical reconditioning of an athlete immediately after sports practice is a crucial step for recovery and maintaining their performance. In this way, the wearable device according to the invention contributes significantly to adequate photobiomodulation therapy.

[0020] The wearable device also provides comfort to the user while the photobiomodulation treatment is performed. Preferably, the photobiomodulation treatment using the wearable device according to the present invention is conducted while the user remains at rest. The technical effect related to the adequate control of the power of the light emitted per area of ​​skin is linked to the preservation of the distance between the light emission sources (6) and to the fact that the flexible support layer (5) is flexible, but not elastic or compressible, resulting in a substantially constant irradiance while the wearable device is used. Treatment performed with the user at rest also contributes to optimizing irradiance control, keeping it substantially constant along the human body limb.Thus, the wearable device according to the invention is not intended to be clothing, such as the device described in international patent application WO2019217458A1, which prioritizes user comfort, where the user undergoes photobiomodulation treatment while performing their daily activities normally. On the contrary, the wearable device according to the invention prioritizes the efficiency of the treatment, even if achieving this goal requires a reduction in the user's freedom of movement.

[0021] Typically, photobiomodulation treatment using the wearable device according to the present invention is performed one to three times throughout the day, maintaining a minimum interval between sessions of approximately five hours.

[0022] For the purpose of promoting an understanding of the principles in accordance with the embodiments of the present invention, reference will be made to the embodiments illustrated in the figures and to the language used to describe them. In any case, it should be understood that there is no intention to limit the scope of the present invention to the content of the figures. Any subsequent alterations or modifications of the inventive features illustrated herein, as well as any additional applications of the principles and embodiments of the invention illustrated, which would normally occur to a person skilled in the art possessing this description, are considered within the scope of the claimed invention. Fig. 1

[0023] [Fig. 1] illustrates a view of a wearable device for a human body limb for photobiomodulation therapy according to the invention; Fig. 2

[0024] [Fig. 2] illustrates a view of the interior of the wearable device in an open configuration with the light-emitting source circuits exposed; Fig. 3

[0025] [Fig. 3] illustrates an exterior view of the wearable device in an open configuration with the exposure of a power and operating time control device; Fig. 4

[0026] [Fig. 4] illustrates a view of the wearable device highlighting the multilayers comprised in the flexible lower and upper portions; Fig. 5

[0027] [Fig. 5] illustrates a schematic representation of a system for photobiomodulation therapy comprising a wearable device according to the invention; Fig. 6

[0028] [Fig. 6] illustrates a cross-sectional view of one embodiment of the wearable device with an air chamber to increase the contact capability between the wearable device and the skin; Fig. 7

[0029] [Fig. 7] illustrates a view of the interior of the wearable device in an open configuration with the light-emitting source circuits and air chamber exposed.

[0030] The present invention relates, in a first aspect, to a wearable device for a human limb for photobiomodulation therapy comprising:

[0031] a lower flexible portion (1), which is configured to enclose a lower portion of the human body limb and comprises a first terminal portion (3); and

[0032] a flexible upper portion (2), which is configured to enclose an upper portion of the human body limb and comprises a second terminal portion (4) defining an upper opening; and

[0033] a plurality of light emission sources (6); and in which

[0034] the lower flexible portion (1) is connected to the upper flexible portion (2); and wherein

[0035] each of the lower flexible portion (1) and the upper flexible portion (2) comprises a flexible support layer (5); and wherein

[0036] the flexible support layer (5) comprises an opaque outer surface; and wherein

[0037] the light emission sources (6) are arranged along the inner surface of the flexible support layer (5) of each of the lower flexible portion (1) and the upper flexible portion (2); and wherein

[0038] the light emitting sources (6) are configured to emit light at a wavelength in the range of 620 nm to 1100 nm; and wherein

[0039] the light emitting sources (6) have an irradiance in the range of 5 mW / cm² to 150 mW / cm².

[0040]

[0041] As used in this description, the term "irradiance" or power density refers to the power of electromagnetic radiation per unit area irradiated.

[0042] In preferred embodiments of the present invention, as illustrated in Figure 2, the light-emitting sources (6) are comprised in at least one light-emitting source circuit (7).

[0043] Preferably, the light-emitting sources (6) are configured to emit light at a wavelength in the range of 620 nm to 810 nm. Even more preferably, the light-emitting sources (6) emit light in the red of the visible electromagnetic radiation spectrum, namely in the range of 620 to 750 nm. Preferably, the light-emitting sources (6) have irradiance in the range of 5 mW / cm² to 100 mW / cm².

[0044] Preferably, the light-emitting sources (6) are selected from the group consisting of a light-emitting diode, a laser, an intense pulsed light-emitting device or combinations thereof.

[0045] In embodiments where the light emitting sources (6) are lasers, preferably these can be of the Ruby, Alex, Diode, Alexandrite and Nd:YAG laser type.

[0046] In other particularly preferred embodiments, as illustrated in Figure 2, the light-emitting sources (6) are light-emitting diodes (LEDs) and are arranged in at least one light-emitting diode strip (8), which is connected to the flexible support layer (5). The wearable device may comprise a single circuit of light-emitting sources (7), for example an LED circuit, or a plurality of these may be connected to the inner surface of the flexible support layer (5). For example, a first circuit of light-emitting sources (7) may be arranged in the inner zone of the lower flexible portion (1) and connected to a first portion of the flexible support layer (5), and a second circuit of light-emitting sources (7) may be arranged in the inner zone of the upper flexible portion (2) and connected to a second portion of the flexible support layer (5).

[0047] Preferably, the flexible support layer (5) is made of a material selected from the group consisting of a woven and a non-woven fabric. The flexible support layer (5) must have flexible characteristics so as to conform adequately to the contours of the human body limb. On the other hand, the woven or non-woven fabric of the flexible support layer (5) must not have elastic or compressible characteristics, i.e., the fibers that make up these materials must not have the capacity to be significantly stretched or compressed along their length.

[0048] As used in this description, the term "nonwoven" refers to a material that, despite having a texture similar to that of a textile, does not result from a weaving process in which the filaments of the material are joined by other processes, such as chemical or thermal processes. Preferably, a nonwoven fabric may be a polyester, a polyamide, a polychloroprene, a polyvinyl chloride, a chloroprene rubber, ethylene vinyl acetate, polyurethane, silicone rubber and their composites or copolymers.

[0049] In particularly preferred embodiments, the lower flexible portion (1) and the upper flexible portion (2) comprise a flexible support layer (5), which may be made of a nonwoven fabric. As illustrated in Figure 4, a second flexible layer (5a) may be connected to the flexible support layer (5). Additionally, a third flexible layer (5b) may be connected to the second flexible layer (5a). The second flexible layer (5a) and the third flexible layer (5b) may be made of a woven fabric, a nonwoven fabric, or composite materials made of woven and nonwoven fabrics, for example, polyamide and polyvinyl chloride composites.

[0050] The flexible support layer (5) and, optionally, the second flexible layer (5a) and the third flexible layer (5b) contribute to increasing mechanical protection against impacts on the light emitting sources (6), such impacts being able to break the circuits of the light emitting sources (7). Additionally, these flexible layers also contribute to the thermal insulation of the wearable device, preventing energy losses that could compromise the efficiency of the photobiomodulation treatment.

[0051] In other particularly preferred embodiments, as illustrated in Figures 6 and 7, the wearable device further comprises an air chamber (11), which is disposed over the flexible support layer (5), wherein the air chamber is configured to be pressurized and thus exert pressure on the flexible support layer (5). The air chamber (11) is configured to be inflated and acquire a positive pressure and exert pressure on the outer surface of the flexible support layer (5), increasing the proximity and contact between the light emission sources (6) and the skin. In this way, the air chamber (11) contributes to optimizing the ability to provide substantially constant light emitted power per skin area throughout the treatment. Preferably, the air chamber (11) is disposed over the flexible support layer (5), wherein the air chamber (11) is configured to be pressurized and thus exert pressure on the flexible support layer (5).

[0052] Even more preferably, as illustrated in Figures 6 and 7, the second flexible layer (5a) is connected to the outer surface of the flexible support layer (5) and the third flexible layer (5b) is connected to the outer surface of the second flexible layer (5a). In this configuration, the second flexible layer (5a) acts as an outer protective layer against impacts or other damage to the light-emitting source circuits (7), and may also contribute to the opacity of the outer surface of the flexible support layer (5). The third flexible layer (5b) and the fourth flexible layer (5c) act respectively as wrapping fabrics for the air chamber (11).

[0053] As illustrated in Figure 6, the air chamber (11) may include an air valve (12), which is configured to connect in a removable manner to a pressurized air supply device (13), which may be a manual inflation pump or an electric inflation pump. The air valve (12) has a first male / female connector (23) that is connectable to a second male / female connector (24), which is disposed in a terminal portion of the pressurized air supply device (13). Preferably, the pressurized air supply device (13) includes a pressure gauge (14) and a flexible hose, respectively to assist in controlling the inflation pressure of the air chamber (11) and to facilitate handling of the inflation pump.

[0054] Preferably, the air chamber (11) is inflated to a gauge pressure in the range of 10 mmHg to 75 mmHg (1300 Pa to 10000 Pa).

[0055] The opposite portions, which are arranged along the longitudinal direction of the flexible support layer (5), the second flexible layer (5a), the third flexible layer (5b) and the fourth flexible layer (5c), can be joined together respectively by means of a seam or heat-weld joint (10).

[0056] As illustrated in Figure 1, the wearable device comprises a fastening element (9) disposed along at least part of the upper flexible portion (1) and the upper flexible portion (2). Even more preferably, the fastening element (9) is disposed along at least part of the upper flexible portion (1) and the upper flexible portion (2). Thus, the opposite portions along the longitudinal direction of the flexible support layer (5), the second flexible layer (5a), the third flexible layer (5b) and the fourth flexible layer (5c) can also be respectively joined by means of a stitching or heat-welding joint (10) to the opposite ends of the fastening element (9) along its longitudinal direction.

[0057] The wearable device may comprise a plurality of fastening elements (9), which may be pairs of conventional male and female connectors, namely snap buttons, quick-release buttons or buttons with magnets, as will be assessed by an expert in the field. Alternatively, the fastening element (9) may be an adjustable hook and loop strap, for example, a Velcro™ strap.

[0058] As illustrated in Figure 1, the wearable device is a boot that covers a lower portion of the leg and an upper portion of the leg. Even more preferably, the first terminal portion (3) of the boot is closed in order to allow the user's foot to be completely covered. The joining between the upper, side and lower portions of the wearable device that enclose the user's foot can be done by stitching or by heat welding (10), the type of joining being selected according to the type of fabric or non-woven fabric comprised in the lower flexible portion (1).

[0059] The present invention relates, in a second aspect, to a system for photobiomodulation therapy comprising a wearable device, as defined in the first aspect of the invention, and further comprising:

[0060] a power and operating time control device (15), comprising a microcontroller (16), a power control circuit (17) and a timing circuit (18); and wherein

[0061] the microcontroller (16) is connected to the power control circuit (17) and the timing circuit (18) and is configured to issue commands to adjust the power and operating time of the light emitting sources (6); and wherein

[0062] the power and operating time control device (15) is connected to the wearable device.

[0063] As illustrated in Figures 1 and 3, the power and operating time control device (15) is electrically connected to the outer surface of the wearable device and features a user-input command interface with buttons for selecting the wearable device's usage parameters, namely usage time and irradiance.

[0064] Preferably, the power and operating time control device (15) is electrically connected to the wearable device by means of a connection cable (19), which connects to at least one light emitting source circuit (7) included in the wearable device, wherein the connection cable (19) passes through the flexible support layer (5) in order to establish the electrical connection between the light emitting source circuits (7) and the power and operating time control device (15).

[0065] As illustrated in Figure 5, the power and operating time control device (15) includes a power source (20), which may be a rechargeable battery (e.g. a lithium-ion or lithium-polymer battery), a primary battery (e.g. an alkaline or silver oxide battery), a solar cell, a piezoelectric generator, an electromagnetic generator, a supercapacitor, an inductively charged battery, a resonantly inductively coupled battery, or a flexible battery.

[0066] In other preferred embodiments according to the present invention, the system further comprises a data communication unit (21) with a computing device (22), which includes a user interface.

[0067] The computing device (22) can be any type of computing device (22) configured for communication with the power and operating time control device (15), such as a computer, a smartphone, a tablet, or a smartwatch. In this way, the user interface on the computing device (22) can be configured so that the user can view data or reports about the operation of the power and operating time control device (15), for example, data related to treatment time and irradiance of the light emitting sources (6). The user can also send commands to the power and operating time control device (15) through the user interface of the computing device (22).

[0068] As will be understood by an expert in the field, a communication channel is established between the data communication unit (21) and the computing device (22), and said communication channel may be a communication network, which includes at least one network selected from the group consisting of a public network, an interconnected set of public and / or private networks, such as the internet, and a private network. Additionally, the communication network may be implemented via wires or via wireless communication means. The wireless communication channel may be established by protocols known to an expert in the field, namely a Bluetooth or Wi-Fi protocol.

[0069] As used in this description, the expressions "about" and "approximately" refer to a range of values ​​of plus or minus 10% of the specified number.

[0070] As used throughout this patent application, the term “or” is used in an inclusive sense rather than an exclusive sense, unless the exclusive sense is clearly defined in a specific situation. In this context, a sentence of the type “X uses A or B” should be interpreted as including all pertinent inclusive combinations, for example “X uses A”, “X uses B”, and “X uses A and B”.

[0071] As used throughout this patent application, the indefinite articles “a” or “an” should generally be interpreted as “one or more” and “an or more,” unless the meaning of a singular modality is clearly defined in a specific situation.

[0072] As presented in this description, terms related to examples should be interpreted as illustrating an example of something and not as indicating a preference.

[0073] As used in this description, the expression "substantially" means that the actual value is within approximately 10% of the desired value, variable, or related limit, particularly within approximately 5% of the desired value, variable, or related limit, or especially within approximately 1% of the desired value, variable, or related limit.

[0074] The subject matter described above is provided as an illustration of the present invention and should not be interpreted as limiting it. The terminology used to describe specific embodiments according to the present invention should not be interpreted as limiting the invention. As used in the description, definite and indefinite articles, in their singular form, are intended to include plural forms as well, unless the context of the description explicitly indicates otherwise. It will be understood that the terms "comprise" and "include," when used in this description, specify the presence of the related features, elements, components, steps, and operations, but do not exclude the possibility of other features, elements, components, steps, and operations also being contemplated.

[0075] All modifications, provided they do not alter the essential characteristics of the following claims, shall be considered within the scope of protection of the present invention.

[0076] 1. A flexible lower portion

[0077] 2. A flexible upper portion

[0078] 3. A first terminal portion

[0079] 4. A second terminal portion

[0080] 5. A flexible support layer

[0081] 5a. A second flexible layer

[0082] 5b. A third flexible layer

[0083] 5c. A fourth flexible layer

[0084] 6. A light-emitting source

[0085] 7. A circuit of light-emitting sources

[0086] 8. A strip of light-emitting diodes

[0087] 9. A closing element

[0088] 10. A seam or heat-welded joint

[0089] 11. An inner tube

[0090] 12. An air valve

[0091] 13. A pressurized air supply device

[0092] 14. A pressure gauge

[0093] 15. A power and operating time control device

[0094] 16. A microcontroller

[0095] 17. A power control circuit

[0096] 18. A timing circuit

[0097] 19. A connecting cable

[0098] 20. A source of energy

[0099] 21. A data communication unit

[0100] 22. A computing device

[0101] 23. A first male / female connector

[0102] 24. A second male / female connector

[0103] Patent documents

[0104] US patent application US2007129776A1, by Anthony J. Robins et al., published on June 7, 2007;

[0105] International patent application WO2019217458A1 by Daniel Gerard Schupp, published on November 14, 2019.

Claims

A wearable device for a human body limb for photobiomodulation therapy comprising: a lower flexible portion (1), which is configured to enclose a lower portion of the human body limb and comprises a first terminal portion (3); and an upper flexible portion (2), which is configured to enclose an upper portion of the human body limb and comprises a second terminal portion (4) defining an upper opening; and a plurality of light emission sources (6); and wherein the lower flexible portion (1) is connected to the upper flexible portion (2); and wherein each of the lower flexible portion (1) and the upper flexible portion (2) comprises a flexible support layer (5); characterized in that the flexible support layer (5) comprises an opaque outer surface;eporas light emitting sources (6) are arranged along the inner surface of the flexible support layer (5) of each of the lower flexible portion (1) and the upper flexible portion (2); eporas light emitting sources (6) are configured to emit light at a wavelength in the range of 620 nm to 1100 nm; eporas light emitting sources (6) have irradiance in the range of 5 mW / cm² to 150 mW / cm². The wearable device, according to the preceding claim, characterized in that the light-emitting sources (6) are comprised in at least one light-emitting source circuit (7). The wearable device, according to any of the preceding claims, characterized in that the light emitting sources (6) are selected from the group consisting of a light-emitting diode, a laser, an intense pulsed light emitting device or combinations thereof. The wearable device, according to the previous claim, characterized in that the light emitting sources (6) are light-emitting diodes and are arranged in at least one strip of light-emitting diodes (8), which is connected to the flexible support layer (5). The wearable device, according to any of the preceding claims, characterized by the flexible support layer (5) being made of a material selected from the group consisting of a woven fabric and a flexible nonwoven fabric. The wearable device, according to any of the preceding claims, further characterized by comprising an air chamber (11) disposed on the flexible support layer (5), wherein the air chamber (11) is configured to be pressurized and thus exert pressure on the flexible support layer (5). The wearable device, according to the previous claim, characterized by the air chamber (11) being delimited by a third flexible layer (5b) and by a fourth flexible layer (5c), wherein the air chamber (11) includes an air valve (12). The wearable device, according to the previous claim, characterized by a second flexible layer (5a) being connected to the outer surface of the flexible support layer (5) and a third flexible layer (5b) being connected to the outer surface of the second flexible layer (5a). The wearable device, according to any of the preceding claims, characterized by comprising a fastening element (9) disposed along at least part of the upper flexible portion (1) and the upper flexible portion (2). The wearable device, according to any of the preceding claims, is characterized by being for use in photobiomodulation treatment of a human body part. The wearable device, according to any of the preceding claims, characterized in that the wearable device is a boot that covers a lower portion of the leg and an upper portion of the leg. The wearable device, according to the previous claim, characterized by the first terminal portion (3) of the boot being closed. A system for photobiomodulation therapy characterized by comprising a wearable device, as defined in any of the preceding claims, and further comprising: a power and operating time control device (15), which comprises a microcontroller (16), a power control circuit (17) and a timing circuit (18); and wherein the microcontroller (16) is connected to the power control circuit (17) and the timing circuit (18) and is configured to issue commands to adjust the power and operating time of the light emitting sources (6); and wherein the power and operating time control device (15) is connected to the wearable device. The system, according to the previous claim, characterized by the power and operating time control device (15) being connected to the wearable device by means of a connection cable (19), which connects to at least one light emission source circuit (7) comprised in the wearable device. The system, according to either of claims 13 and 14, characterized by further comprising a data communication unit (21) with a computing device (22), which includes a user interface.

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