FR3143373A1 - Phototherapy treatment device - Google Patents

Abstract

The phototherapy device (10) comprises a light emitting body (12) comprising a light source (30) comprising a plurality of light elements (32) emitting light towards a part of a user's body and a module for controlling the light source (30), characterized in that the light elements (32) are distributed by sets of light elements to form groups (A to D), each group (A to D) being associated with an addressing unit so that the control module can control at least one parameter of the sets of light elements (32) of each group (A to D) independently and individually by addressing control signals from the control module to the addressing units. Figure 2_

Description

Phototherapy treatment device.

The present invention relates to the general field of aesthetic treatment, in particular the treatment of a portion of the body of a user, in particular a face of a user.

It applies more particularly but not exclusively to the field of treatment of the skin of the body or face of a human being by phototherapy using, for example, light-emitting diodes.

Many treatments are known to improve the aesthetics and/or appearance of the human body and in particular its skin. It is therefore common to use these treatments to, for example, seek to obtain an anti-aging and/or anti-wrinkle effect, or to improve the aesthetic aspect of local lesions such as stretch marks, scars, bites, acne, etc.

To this end, it is possible to avoid resorting to invasive and/or chemical treatments, or to supplement the latter by using the beneficial effects of light on the human body and in particular of certain colors (or wavelengths). ) specific to the light, such as red light, yellow light or blue light. Indeed, it is known that these lights, due to the energy they transport and/or the cellular receptors that they specifically stimulate, can be beneficial for the skin, in particular for the aesthetic effects and treatments mentioned previously and/or or to provide a feeling of well-being and/or improve the recovery of the user subjected to the light in question.

Various treatment devices have therefore been developed which emit light intended to treat a portion of the skin of the human body. These treatment devices include a light source including a plurality of light-emitting diodes that enable treatment of the user's body part.

The present invention proposes to provide an improvement of existing treatment devices by offering a personalized treatment of the cosmetic care of the individual according to particularities and specificities linked to their age, their gender, and more generally their skin characteristics.

Description of the invention

The present invention aims in particular to offer a personalized phototherapy treatment using a method of characterizing the body surface.

For this purpose the subject of the invention is a device for phototherapy of a part of the body of an individual, comprising a light emitting body comprising a light source comprising a plurality of light elements emitting light in the direction of a part of the body of an individual, a module for controlling the light source, characterized in that the light elements are distributed by sets of light elements to form groups, each group being associated with an addressing unit of so that the control module can control at least one adjustment parameter of all the light elements of each group independently by addressing control signals from the control module to the addressing units and in that the control module control comprises means for generating control signals from a data frame of diagnostic results of a body surface of the individual.

The invention may further include one or more of the following features.

According to a preferred embodiment of the invention, the control module comprises a processor for executing software instructions for generating control signals for groups of light elements.

[According to a preferred embodiment of the invention, the control module comprises a memory for storing software instructions for execution by the processor.

According to a preferred embodiment of the invention, the data frame is generated from a user interface of the device allowing an operator to adjust the adjustment parameter for each group according to at least one diagnostic criterion observed visually on an individual.

According to a preferred embodiment of the invention, the device comprises a base for supporting the light body, the base comprising a display window forming the user interface.

According to a preferred embodiment of the invention, the user interface is supported in software on external electronic equipment which communicates with the device.

According to a preferred embodiment of the invention, the data frame of skin diagnosis results is calculated by processing a digital image of an area of interest of a body surface of the individual according to at least a predefined diagnostic criterion.

According to a preferred embodiment of the invention, the diagnostic criterion makes it possible to characterize a homogeneity of the skin, a depth of relief of imperfections, a color or shade of the skin, a luminosity of the skin.

According to a preferred embodiment of the invention, each group is located in a zone of interest of the user's face chosen from a peri-orbital zone (around the eye), a frontal zone, a maxillary zone ( of the cheek), a neck area, a chin area and a nasolabial fold area.

According to a preferred embodiment of the invention, the addressing unit comprises an integrated circuit or a microcontroller connected to the light elements of the same group.

According to a preferred embodiment of the invention, the adjustment parameter is chosen from a range of emission wavelengths, a light intensity, an on or off duration, an on/off frequency .

The invention will be well understood and its advantages will appear better, on reading the detailed description which follows, of embodiments represented by way of non-limiting examples. The description refers to the attached drawings in which:

There is a perspective view of a phototherapy treatment device according to a preferred embodiment of the invention;

There is a front view of an interior face of the device of the illustrating a distribution of the light elements of a light source of the device;

There is a schematic view of a system for controlling the light elements of the according to the invention;

There represents a diagnostic facility for a part of a user's body;

There illustrates a step of implementing the invention.

Detailed description of the invention

We have shown schematically on the a phototherapy treatment device. In the remainder of the description, the phototherapy treatment device is designated by the general reference 10.

In the preferred embodiment of the invention and in a non-limiting manner, the phototherapy device 10 comprises a light emitting body 12, for example in the form of a facial mask and a support 20. The body of the mask 12 has for example a external face 22 (visible on the ) and an opposite internal face 24 (visible on the ) for emitting light towards the face of a user of the device 10. In the example described, the support 20 comprises a support base 16 and a rod 14 for connecting the base 16 to the mask 12.

In the example illustrated on the , the luminous body 12 is in the form of a wall shaped with a concavity and of general ovoid shape such that the wall of the body can match the natural curvature of a human face.

According to the invention, the light emitting body 12 comprises a light source 30 comprising a plurality of light elements 32 each emitting a unitary luminous flux towards a part of the body of a user. For example, each light element is a light-emitting diode.

Preferably, the light source 30 of the luminous body 12 emits quasi-monochromatic red light in the wavelength range 620-640 nanometers, preferably centered around 630 nanometers. However, the light source 30 can emit several light beams in distinct predefined wavelength ranges. For example, the light source 30 can emit light in several wavelength ranges of the visible spectrum located in particular in the red, in the blue and in the yellow, the wavelengths of these ranges having demonstrated an effectiveness particularly for the aesthetic treatment of the skin or scalp for example. In this case, the light source 30 may comprise several types of light elements 32 emitting for each type in a predefined wavelength range with a distribution in the light body 12 that is homogeneous or not.

The phototherapy device 10 conventionally comprises a module 100 for controlling the emission of light generated by the light source 30 of the luminous body 12. The device 10 also preferably comprises an electrical power supply module (not shown on the figures) of the luminous body 12.

In addition, the device 10 also comprises a module 100 for controlling the light source 30 and more particularly at least one adjustment parameter of an emission characteristic of the light elements 32. The adjustment parameter can be chosen from in a non-limiting manner, for example among a range of emission wavelengths, a light intensity, an on or off duration, an on/off frequency.

In accordance with the invention, the light elements 32 are distributed in the form of groups A to D of light elements 32, each group A to D being associated with an addressing unit 110A to 110D, with a unique address, static or dynamic , so that the control module 100 can control a light parameter of the plurality of light elements 32 of each group A to D independently and individually from one group to another. This makes it possible to adapt the phototherapy treatment according to group A to D by addressing the control signals from the module 100 to the addressing units 110A to 110D.

Each addressing unit is connected to a set of light elements 32 forming a group and each group includes a unique address which can be static or dynamic. The control signal comprises for example a data structure comprising control instructions, an address and useful data.

Preferably, each addressing unit 110A to 110D comprises an integrated circuit or a microcontroller connected to the light elements 32 of the same group. In the same group A to D, preferably, the plurality of light elements 32 may include different types of light elements 32 emitting in distinct length ranges. Furthermore, the addressing unit 110A to 110D may include one or more electrical energy distribution buses between each of the light elements 32 in order to allow control of the luminous flux of each of the light elements 32 corresponding to the adjustment parameters.

Furthermore, although not shown, the device 10 may comprise a plurality of electrically conductive plates, each plate supporting the light elements 32 of the same group A to D as well as the associated addressing unit 110A to 110D in order to electrically connect them together. The electrically conductive base board may be flexible or rigid, and is manufactured, without limitation, in the form of a printed circuit film.

The module 100 is intended to transmit control signals comprising control information of the light parameter of the plurality of light elements from group A to D to the corresponding addressing unit 110A to 110D, for example according to a communication protocol predefined known to those skilled in the art.

Preferably, the module 100 further comprises a processor for executing software instructions for controlling the parameters of the sets of light elements 32 of each group A to D. For example, the module 100 comprises a memory for storing the software instructions with a view to their execution by the processor.

For example, each group A to D is located in a zone of interest of the user's face chosen in a non-limiting manner from a peri-orbital zone "B" (around the eye), a frontal zone "C" , a maxillary area (of the cheek), a neck area, a nasolabial fold area “A”, a perioral area “D”.

In a first embodiment of the invention, at least one skin characteristic of the body surface of the individual defined according to a predefined diagnostic criterion is analyzed by means mainly relating to optics and image processing.

In the example illustrated on the , in order to establish a skin diagnosis of the individual, an acquisition of one or more digital photographic images, for example in three dimensions or in two dimensions, is carried out from an image acquisition device 210.

Advantageously, the area of interest of the image can be delimited and detected in a way that can be transposed from one individual to another by applying a reference model. The reference model can for example be constructed from an identification of anatomical elements characteristic of a human face such as the eyes, the nose, the mouth or even the chin.

For example, the diagnostic criterion makes it possible to characterize the homogeneity of the skin, the depth of the relief of imperfections, the color of the skin, the luminosity of the skin. The skin characteristics are calculated according to diagnostic criteria from the digital image defined by a multiplicity of digital pixels and in which a characterization of the body surface of the individual is carried out.

Imperfections may be, for example, a skin imperfection such as wrinkles, fine lines, dark circles, a lesion resulting from irritation or a skin condition such as for example eczema, age spots, acne. , a scar, a stretch mark line, etc.

For example, the control module 100 includes means for generating software instructions for controlling the light source 30 from a data frame of skin diagnosis results according to the predefined diagnostic criterion(s). In the first embodiment, the result data frames are calculated from the processing of a digital image of an area of interest (A to D) of the skin of the user's body part.

Advantageously, on the acquired digital images, a zone of interest of the face is delimited and the calculation of the skin characteristic(s) according to diagnostic criteria is carried out on the zone of interest. For example, an image is acquired of the entire face of the individual or only of an area of interest which may be a peri-orbital area, a perioral area, an area around the nose, a maxillary area, a frontal area, an area located on the top of the chin. On the For example, the image acquisition apparatus 200 is set to acquire an image of an area of the nasolabial fold of the individual.

The image(s) are then processed for example by a calculation computer 220 so that the diagnostic result data established according to predefined diagnostic criteria are extracted and are transferred in the form of a data frame readable by the control module 100. The processor of the control module 100 comprises, for example, a matrix for converting the data frame into software instructions, the execution of which by the processor makes it possible to generate the control signals for the light elements of the group(s) A to D corresponding to the zones of interest to be processed. The digital image processing calculations are carried out in a conventional manner by image processing methods well known to those skilled in the art which will not be detailed below.

In a second embodiment of the invention, as illustrated in the , the software instructions are generated from a user interface 300 of the device 10 allowing an operator to adjust the adjustment parameters of the light elements 32 of groups A to D according to diagnostic criteria visually observed on an individual.

In the example of the , the user interface 300 is supported in software on a tablet 310. The tablet 310 communicates for example with the device 10 and therefore with the control module 100 by a wired or wireless connection (for example by Bluetooth® or by WiFi ).

The user interface 300 includes for example cursors 302 and adjustment wheels 304 for each zone of interest implemented in software on the interface 300. In the example illustrated in the , the operator is adjusting a light parameter of the light elements 32 of the frontal zone of interest of the individual by means of a cursor 302.

In a variant not illustrated, the base 16 of the support 20 of the light body 12 includes a display window forming the user interface. In this case, the user interface is supported materially directly on the base 16 of the device 10 for example by tactile display means (not visible in the figures) of cursors and adjustment wheels or by buttons implemented hardware on the base 16.

We will now describe the main operating aspects of a processing device according to the invention.

An individual wishes to receive treatment by the treatment device 10. This individual is of any age and gender. In this case, the phototherapy treatment is carried out on the face.

First, the individual undergoes a diagnostic analysis of the skin on their face. This diagnostic analysis can be carried out either by computer and mathematical processing of a digital image acquired by an image acquisition device according to predefined diagnostic criteria or directly after visual observation by an operator of the individual's skin.

In both cases, this diagnostic analysis has the effect of producing a data frame convertible into software instructions that are executable and readable by the control module 100. These software instructions allow the generation of control signals addressed to each of the addressing units. 110A to 110D.

Thanks to the invention, the device allows precise mapping of the part of the body to be treated by areas of interest associated with unique addresses so as to allow the routing of light control signals individually by group in each of the areas of interest. This allows personalized treatment of the user's face or any other part of the user's body.

Of course, other embodiments are possible without departing from the scope of the invention. Thus, various modifications can be made by those skilled in the art to the invention which has just been described by way of example.

Claims (11)

Device (10) for phototherapy of a part of the body of an individual, comprising:

• a light emitting body (12) comprising a light source (30) comprising a plurality of light elements (32) emitting light towards a part of the body of an individual,
• a module (100) for controlling the light source (30),

characterized in that the light elements (32) are distributed by sets of light elements to form groups (A to D), each group (A to D) being associated with an addressing unit (110A to 110D) so that the control module (100) can control at least one adjustment parameter of all the light elements (32) of each group (A to D) independently by addressing control signals from the control module (100) towards the addressing units (110A to 110D) and in that the control module (100) comprises means for generating control signals from a data frame of diagnostic results of a body surface of the 'individual. Device (10) according to the preceding claim, in which the control module (100) comprises a processor for executing software instructions for the generation of control signals for the groups (A to D) of light elements (32). Device (10) according to the preceding claim, in which the control module (100) comprises a memory for storing the software instructions for their execution by the processor. Device (10) according to any one of claims 2 to 3, wherein the data frame is generated from a user interface (300) of the device (10) allowing an operator to adjust the adjustment parameter for each group (A to D) according to at least one diagnostic criterion visually observed on an individual. Device (10) according to the preceding claim, comprising a base (16) for supporting the luminous body (12), the base (16) comprising a display window forming the user interface. Device (10) according to the preceding claim, wherein the user interface (300) is supported in software on external electronic equipment (310) which communicates with the device (10). Device (10) according to any one of claims 2 or 3, wherein the data frame of skin diagnostic results is calculated by processing a digital image of an area of interest of a body surface of the individual according to at least one predefined diagnostic criterion. Device (10) according to the preceding claim, in which the diagnostic criterion makes it possible to characterize a homogeneity of the skin, a depth of relief of imperfections, a color or shade of the skin, a luminosity of the skin. Device (10) according to any one of the preceding claims, in which each group (A to D) is located in a zone of interest of the user's face chosen from a peri-orbital zone (around the eye) , a frontal area, a maxillary (cheek) area, a neck area, a chin area and a nasolabial fold area. Device (10) according to any one of the preceding claims, in which the addressing unit (110A to 110D) comprises an integrated circuit or a microcontroller connected to the light elements (32) of the same group (A to D) . Device (10) according to any one of the preceding claims, in which the adjustment parameter is chosen from a range of emission wavelengths, a light intensity, an on or off duration, a frequency of switching on/off.