RU203697U1 - DEVICE FOR PHOTOTHERAPY OF A NEWBORN CHILD - Google Patents

Abstract

The utility model relates to medical technology. The technical result consists in increasing the simultaneously irradiated surface of the child's skin. The device for phototherapy of a newborn baby includes a part of the device surrounding the body of a newborn baby and containing a substrate, a light-emitting unit and a control unit. The light emitting unit consists of flexible printed circuit boards with light sources in the form of LEDs emitting blue light with a wavelength of 460-490 nanometers, while the flexible printed circuit boards are attached to the substrate and connected to the control unit, and the specified part of the device is a monolithic flexible and elastic structure , moreover, flexible printed circuit boards with light sources in the form of LEDs are made in the form of segments interconnected by jumpers to ensure a parallel electrical connection, and the jumpers are located along the edges of the substrate, the last segment of printed circuit boards with LEDs installed on it ends in a current-carrying cable through which the unit is connected management. 8 p.p. f-ly, 7 ill.

Description

The claimed utility model relates to devices for phototherapy in the treatment of jaundice in newborns, including the simultaneous irradiation of the entire body of the child and at home.

From the prior art, the opinions of specialists - pediatricians on this problem are known. So, for example, from a fragment of an article by a pediatrician (Levina N. Features of the treatment of jaundice in newborns with phototherapy - baby.ru/wiki/osobennosti ...):

Physiological jaundice of newborns is completely normal. It is associated with the active destruction of fetal hemoglobin, as a result of which a large amount of free (unbound bilirubin) appears in the baby's body at once. Clinically, this is manifested by the fact that on the 2nd or 3rd day of life in almost all newborns, the skin acquires a yellowish tint, and by the tenth day of life, if everything is in order, the yellowness completely disappears. But this is not always the case. In a number of cases (the reasons are disclosed in the article), processes are triggered in the baby's body, in which the destruction of red blood cells is more active than normal, which leads to a significant increase in the concentration of free bilirubin and an increase in jaundice.

Such an excessive increase in the concentration of this substance can be dangerous for the baby's body, in particular, for his brain. Bilirubin does not have time to be utilized and excreted by the body, therefore it (as a fat-soluble substance) is deposited first in the subcutaneous fatty tissue, and then, when there is not enough space, it begins to accumulate in the brain nuclei, irreversibly damaging them. This condition is called kernicterus, and it is directly dangerous for the life and health of the child.

In order to prevent such formidable complications, with an increase in the concentration of bilirubin above 256 μmol / L in term infants and above 171 μmol / L in premature infants, therapeutic measures are started.

The first on the list of such measures is phototherapy (ultraviolet treatment).

Phototherapy for neonatal jaundice is one of the most gentle and effective ways to deal with the problem. The process uses lamps, the ultraviolet waves of which convert bilirubin into a harmless soluble substance (lumirubin), which is then naturally excreted from the body. As a result, the concentration of the yellow pigment rapidly decreases, and its negative effect on the newborn is neutralized.

Features of phototherapy for neonatal jaundice:

- the harmless water-soluble isomer is excreted within 12 hours after the completion of the procedure, along with the feces;

- radiation in its characteristics is similar to natural sunlight, but has a blue tint. The phototherapy procedure is painless and does not cause discomfort to the child;

- the procedure is prohibited for children with obstructive jaundice, liver abnormalities, or the level of bilirubin is critically high. Under these conditions, other methods of therapy are selected.

How long does phototherapy last?

It is difficult to name the optimal duration of the procedure. It will depend on the condition of the newborn.

If the child is very overheated and / or his body turns red, the treatment must be stopped urgently.

The minimum duration of phototherapy is 2 hours. If the level of yellow pigment remains consistently high, then the child is left under the lamp for up to 4 days. The baby should be under it constantly for 96 hours with breaks only for feeding. In order not to reduce the effectiveness of the procedure, the mother should take the baby to the breast for a maximum of 2-3 hours. It happens that after light therapy, the child becomes drowsy, the stool is disturbed, or an allergic rash appears. Often, the skin of a small patient also acquires a bronze tint, begins to dry out. These side effects do not require special procedures and go away on their own in a few days.

Home phototherapy:

Most often, the procedure is carried out in a hospital setting, since it requires dynamic monitoring of the child and prompt updating of blood test data to the level of free bilirubin. However, there are cases when, for whatever reason, phototherapy is carried out at home (usually we are talking about "light" children with a slight excess of the concentration of free bilirubin in the blood). Parents can buy or rent a special lamp.

It is very important to carry out phototherapy for jaundice in newborns only after prior agreement with the pediatrician, strictly observing all his prescriptions. It is important that the specialist visits the newborn on a daily (and preferably repeatedly) visit to ensure that the treatment is proceeding as planned. It is also necessary to promptly provide blood tests for the level of free bilirubin at home.

For home treatment, a special lamp is attached to the side of the crib. It is permissible to turn it on at a distance of at least 50 cm from the newborn. It is imperative to close the eyes and genitals of the child with a dense, clean cloth folded in 4-5 layers, and also take care of heating if the room is cool. Parents should carefully monitor the baby's condition when using a special ultraviolet lamp at home.

To avoid burns, do not leave the newborn alone with the device turned on. It is necessary to monitor the child's body temperature during therapy and make sure that redness does not appear on his skin.

With home phototherapy, the baby should be regularly turned over and taken out to feed. Under the influence of ultraviolet radiation, the baby's body quickly loses moisture, and breast milk not only avoids dehydration, but also accelerates the excretion of bilirubin.

If, despite the treatment, jaundice continues to grow and / or unwanted symptoms appear (given in the article), then urgent hospitalization is required and, most likely, exchange transfusion.

Phototherapy is an effective procedure for treating neonatal jaundice. It is safe if you carefully follow all the doctor's instructions and carefully look after the baby during the treatment.

From the video clip for the article:

- phototherapy is a phototherapy procedure using ultraviolet rays with a wavelength of 400-500 nm (nanometers);

- a special lamp is used. The service life of the lamp is 3 months, so if the lamp is overdue, then it will not give the desired effect (i.e., a used lamp is not recommended;

- for uniform irradiation of the child's body, it must be turned over every half hour, then on the tummy, then on the back;

- the child's body temperature is measured every 2-3 hours;

- the course of treatment is controlled not by the color of the child's skin, but by the content of bilirubin in the blood.

The above excerpts from the article deal with the most important practical aspects of this problem. Conclusions on the article:

- the current most common practice of treating newborn children from jaundice is presented;

- the problem concerns almost all newborn children;

- the baby must be under the lamp constantly for 96 hours;

- the child's body must be turned over under the lamp every half hour;

- The child's body temperature should be checked every 2-3 hours.

Thus, the child's stay in hospital (in maternity hospitals, neonatal intensive care units, etc.) is limited in time and treatment is often continued at home as directed by a doctor. Moms find themselves in a difficult situation, since there is no proper medical equipment at home or it is not affordable or does not solve the problems of home treatment described above, and it is only needed for a certain period after inpatient treatment. Using the recommended lamps is inconvenient and the mother is forced to sit with the child for a long time (including turning it over every half hour) and monitor such treatment. The materials below provide solutions to specific aspects of the treatment of neonatal jaundice.

Medical studies have confirmed that the effectiveness of phototherapy in neonatal jaundice of newborns increases with bilateral therapy (Panina O.S., Chernenkov Yu.V., Amirova I.A., Raigorodsky Yu.M. "The effectiveness of bilateral phototherapy in neonatal jaundice and factors, affecting its severity ", j-l" Physiotherapy, balneology and rehabilitation ", No. 6, 2014, https://www.elibrary.ru/item.asp?id=22780225). The study involved term infants with conjugational jaundice. All children were divided into 2 groups. The main group consisted of 125 newborns who received bilateral phototherapy with the ATP-Svetonyanya apparatus (registration certificate of the Ministry of Health of the Russian Federation No. FSR 2010/07820 dated 05/18/2010, manufacturer - OOO TRIMA Saratov). LED lamps-irradiators were located above and below the child. The control group consisted of 50 newborns who received phototherapy using the same device using only the upper plafond - the standard phototherapy technique.

The AFT device - "Svetoonyanya" is a mobile stand with two irradiator shades, allowing the phototherapy procedure to be carried out with one irradiator (upper or lower), or both at once. The size of the effective irradiation zone from the upper feed is at least 450 × 250 mm. The size of the effective irradiation zone from the lower feed is not less than 350 × 200 mm. The exposure is carried out in the wavelength range of 470 nm (blue region of the spectrum) under the control of the level of bilirubin in the child's blood.

Phototherapy for all children was carried out around the clock, at intervals for feeding the child for 2-5 days. The upper cover during phototherapy was placed at a distance of 100-120 cm from the child. The lower plafond (in the case of bilateral irradiation) is not less than 5 cm from the bottom of the incubator. The indication for the appointment of phototherapy was a bilirubin concentration of more than 250 μmol / L. The criterion for discontinuation of phototherapy was a decrease in the level of indirect bilirubin in the blood below the level of penetration through the blood-brain barrier. The control of bilirubin was carried out daily, the level of decrease in bilirubin in the two groups was compared, control of the general blood test was carried out upon admission to and discharge from the hospital. To determine the differences between the groups of subjects, the methods of variation statistics (XLStatistica program) were used: Student's t-test and Fisher's and Spearman's exact test. Differences were considered significant at p <0.05.

Conclusions of the study: bilateral phototherapy increases the rate of decrease in indirect bilirubin and can be recommended for prescription in newborns, especially those at risk of developing severe jaundice.

A device for phototherapy of newborns is known, comprising a stand with upper and lower phototherapeutic irradiators placed on it, the emitting surfaces of which are facing each other, a transparent incubator located on the support, and an equipment connection unit, characterized in that it is additionally equipped with a folding stop made with the possibility of placing the jug at an angle relative to the horizontal surface (RF patent for utility model No. 148224, publ. 27.11.2014, IPC A61N 5/06 (2006.01), A61G 11/00). The prototype of the utility model is the AFT "Svetoonyanya" apparatus, which is partially described in the article above (the applicant and the authors are the same, the photograph of the apparatus is similar), and the patent protects a variant, characterized in that the apparatus is additionally equipped with a folding stop made with the possibility of placing the incubator at an angle relative to the horizontal surface.

The utility model, according to the aforementioned patent, relates to medical technology, namely, to medical neonatal equipment and is intended, in particular, for the treatment of jaundice in newborns in a hospital setting (in maternity hospitals, neonatal intensive care units, etc.). The task to be solved by the utility model under the patent is to increase the simultaneously irradiated surface of the child's skin and, thereby, reduce the rehabilitation period in case of toxic injury with bilirubin. The problem is solved by the fact that the incubator-resuscitation system for newborns is a transformer containing a stand with a phototherapeutic irradiator placed on it, a children's module and an equipment connection unit, and is additionally equipped with a phototherapeutic irradiator located at the base of the children's module. In this case, the emitting surfaces of the main and additional irradiators are facing each other, and the baby unit can be made both mobile and stationary. The technical result consists in the possibility of irradiating the maximum possible area of the child's body. Both fluorescent lamps and LED matrices with light radiation in the spectral range of 450-500 nm (blue radiation) can be selected as irradiators, which leads to a decrease in the concentration of bilirubin in the blood.

Thus, the described device is intended for the treatment of neonatal jaundice and, based on its design, mainly in a hospital setting (in maternity hospitals, neonatal intensive care units, etc.). The device has a relatively large dimensions and is not intended for mass individual use at home.

Known fiber-optic phototherapy system for newborns Biliblanket Plus High Output Phototherapy System "Ohmeda Medical", USA (http://www.ameqs.ru/info/shop/3526/3526/print/, https://medsyst.ru/catalog/ neonatology / phototherapy / biliblanket_plus.html)

Specifications:

Light source:

lightweight, compact, weight 3.2 kg

high-intensity halogen lamp 12 V / 100 W, for 700 hours of operation at an ambient temperature of 25 ° C

wavelength 400-550 nm

infrared and ultraviolet filters with reflector

built-in fan and safety thermostat to prevent overheating of the light source and fiber optic cable (fan noise less than 54 dB)

radiation intensity control

easy-to-clean air filter

timer that determines the duration of the therapeutic procedure and the time for maintenance of the device.

Cable:

- flexible, fiber-optic

- length 1.20 m

- not less than 2400 fibers

Pillow:

- size 10 × 20 cm, irradiation area 10 × 15 cm

- fiber-optic, flexible, with a large radiation area, providing high-intensity therapy.

- the presence of a protective cover (at least 10 pieces)

- the presence of a fixing device (at least 5 pieces)

Operating conditions:

- 100-240V / 50 / 60Hz, 200W maximum

- room temperature from 15 to 35 ° С

- humidity level in the room from 0 to 95%

From the advertising of the system: “The powerful BiliBlanket Plus phototherapy system is very convenient and comfortable for the productive and effective treatment of jaundice in children. Compact and lightweight neonatal phototherapy system with high-intensity halogen lamp, special infrared and ultraviolet filters, built-in ventilator and safety thermostat, air filter, and timer. Easy management. Use in a darkened room provides a soft, non-irritating light transmitted by 2,400 fiber optic fibers and eliminates overheating and moisture loss from the body surface. Emission of blue-green light up to 45 μV / cm ² / nm. The BiliBlanket Plus fiber optic phototherapy system is fundamentally different in design from the "traditional" phototherapy lamps. The device provides an effective and rapid reduction of bilirubin levels in newborns with jaundice by using high-intensity, constant and uniform therapeutic light directly on the baby's skin.

Potentially harmful ultraviolet and infrared radiation is filtered, which reduces the risk of damage to the skin and eyes, as well as the risk of hyperthermia and dehydration.

A remote portable light source and a small, flexible, lightweight fiber optic cushion allow unhindered patient access. The baby can be swaddled, changed and even nursed without interrupting the procedure. The system can be used on an outpatient basis.

Capabilities:

Overheat protection. A cooling fan and thermal safety switch are provided to protect the light source and fiber optic cable from overheating.

Cleaning the air filters. If cleaning is required, the air filter can be easily removed without tools.

Replacing the halogen lamp. The halogen lamp can be easily removed through a special door.

Timer. Controls the duration of the procedure.

Radiation regulator. Smooth intensity regulator allows you to control the level of therapeutic radiation.

A high-intensity quartz-halogen lamp with a built-in reflector makes it possible to receive radiation with an intensity of up to 56 mW / cm ² / nm at the output of a fiber-optic mattress ”.

The system is expensive, rather complicated, and is designed primarily for clinics.

A system and device for determining the temperature of a phototherapy blanket is known, comprising:

a phototherapy blanket that is configured to cover, support, and / or wrap at least a portion of the subject, and

a system for detecting temperatures inside a phototherapy blanket, comprising:

a set of light sources configured to emit electromagnetic radiation, said set of light sources being a held and / or wearable phototherapy blanket;

a first temperature sensor that is configured to generate a first output signal conveying information related to the first temperature in the phototherapy blanket;

one or more processors of a physical computer, functionally connected to the first temperature sensor, and one or more processors of a physical computer are configured to:

determining the first temperature based on the first output signal;

obtaining an amount of energy dissipated by one or more light sources from said set of light sources;

assessing the subject's core temperature based on:

(a) the first temperature and

(b) the amount of energy received; and

controlling said set of light sources based on the estimated internal temperature.

The phototherapy blanket may include a thicker area having higher thermal insulation than one or more other areas of the phototherapy blanket (RF patent for invention No. 2676447, publ. 28.12.2018, IPC A61N 5/06 (2006.01), SPK A61N 5/06 (2018.08).

The patent solutions focus on the measurement of several temperatures, the blanket for this purpose can have different thicknesses. The design of the blanket and the placement of light sources in it are not specifically considered.

Known mattress for phototherapy of a subject, containing:

a gel material having a generally flat shape and / or maintained in such a shape to provide a soft supporting surface for a subject supported by a mattress;

a set of light sources located in the mattress, which is configured to emit electromagnetic radiation into the gel material for falling onto and passing through a support surface to provide phototherapy to such a subject supported by the mattress;

moreover, the gel material is optically permeable and optically scattering, so that electromagnetic radiation emitted by a set of light sources and having therapeutically effective wavelengths is scattered by the gel material before falling on such a subject supported by a mattress (RF patent for invention No. 2708872, publ. 11.12.2019 , IPC A61N 5/06 (2006/01), SPK A61N 5/06 (2019/08).

In this case, the mattress, according to the aforementioned patent, additionally contains a power supply / control port configured for detachable connection of light sources with power supply and / or control devices.

In this case, the mattress, according to the aforementioned patent, contains zones of electromagnetic radiation, made with the possibility of adapting to users of various sizes or to the development of an individual user.

The mattress, according to the above patent, can have flexibility, for example, due to the selected properties of the material from which at least the gel is made. The phototherapy mattress can be divided into two or more sections, including a multi-layer backing, shell and / or other sections. Although both sections are depicted as being connected by a dispersing gel, said two or more sections can be detachable. The multilayer substrate may comprise one or more light sources and / or light guides, fabric substrates, diffusion gel, reflective layers, an electrical insulation layer, and / or other components. The multi-layer backing provides structural support for the phototherapy mattress. The multilayer substrate can provide support, dissipate heat and / or energy, reflect therapeutic electromagnetic radiation, and / or function in other ways. In some embodiments, the multilayer substrate is capable of retaining the light source (s) and / or associated light guide (s), sensor (s), subject, and / or other system components.

In the patent described above, using a gel in a mattress, there is multivariance, which predetermines a certain complexity of its design, and there is no specific study of the design of the mattress.

Known is a blanket-type phototherapy device for treating neonatal jaundice and a method for combating it. A blanket-type device includes a body part (blankets) (100), a light-emitting unit (200) provided in a body part (100), a sensing unit (detection unit or detection unit) (300) for determining the temperature of the light-emitting unit (200), a control unit (400) (Korean patent application, publication number 1020160143181 A, publ. 12/14/2016 (filing date 06/04/2015).

At the same time, in the device, the light-emitting unit (200) is a part of the body (blanket) (100) and consists of special fibers, which are combined into a mesh form of an LED configuration, characterized as blanket-type healing rays for the treatment of neonatal jaundice.

In this case, the sensing unit (300) is connected to the light emitting unit (200) for detecting the LED temperature sensor.

In this case, the sensing unit (300) determines the body temperature of the newborn using a temperature sensor.

In this case, the sensor unit (300) detects humidity using a humidity sensor.

In this case, the sensitive unit (300) determines the pulse of the newborn using the pulse sensor

In this case, the detecting unit (300) detects the temperature, humidity, pulse in the body of the newborn, and the light-emitting unit (200) detects at least one temperature in order to show their values on the display unit (500)

In this case, the control unit (400) with the help of the detecting unit (300) and the light-emitting unit (200) controls the set temperature value and, when it is exceeded, lowers the temperature to the set value.

In this case, the control unit (400) generates alarms to inform the user (410) if the temperature of the light emitting unit (200) detected in the detection unit (300) exceeds a predetermined temperature value.

In this case, the control unit (400) has a power button (430) for powering the light-emitting unit (200), a temperature setting for setting the temperature (450) of the light-emitting unit (200), and a light-emitting part (200) of the light-emitting time setting for the time setting button ( 470).

At the same time, the method of monitoring blanket-shaped radiation therapy for neonatal jaundice includes:

(1) a blanket (100) for wrapping the body of a newborn baby, equipped with a light-emitting unit (200) associated with a detection unit (sensing unit) (300) connected to a control unit (400) to control dynamics,

(2) a detection unit 300 for detecting the temperature of the light emitting unit 200; and

(3) the control unit 400 includes a step of controlling the operation of the light emitting unit 200 in accordance with a detection result.

According to the description, the entire body is surrounded by a light-emitting blanket, and thus jaundice can be treated quickly without the need to change the baby's body position and direction. In addition, the present invention is a portable blanket, and thus jaundice can be treated in a psychologically stable and comfortable state at home when the child is hugged by his parent.

Thus, the design of the blanket itself (base) according to the above-described patent consists of three layers:

- bottom (outer) in the form of a lining;

- middle - a grid LED structure in the form of hexagons, while the LEDs are connected to each other using wires;

- upper (inner) in the form of an overlay with holes for LEDs and a hole for placing the detection unit (300). Then the three layers are bonded together in a known manner (not described).

The construction of the device according to the above-described invention is rather complicated and therefore can hardly be inexpensive.

Based on the qualification of the technical solution as a blanket-type phototherapy device and a specific description of its design, which make it possible to judge the possibility of achieving a technical result (including convenience for home use), the above-described device is taken as a prototype.

The technical result of the claimed utility model is to create a device for phototherapy of a newborn child, which increases the simultaneously irradiated surface of the child's skin and thereby shortens the rehabilitation period in case of toxic bilirubin injury, it can be constructively used at the subsequent stage of the child's body recovery (after hospitalization) at home , has the necessary functions, has a simple design and operation, and a price that is affordable for widespread use.

The technical result is achieved by solving the technical problem of creating a device for phototherapy of a newborn child, which includes a part of a blanket-type device that surrounds the body of a newborn child and contains a substrate, a light-emitting unit and a control unit, characterized in that the light-emitting unit consists of flexible printed circuit boards with light sources in the form of LEDs emitting blue light with a wavelength of 460-490 nanometers, while flexible printed circuit boards are attached to the substrate and connected to the control unit, and part of the blanket-type device is a monolithic flexible and elastic structure, and flexible printed circuit boards with light sources in in the form of LEDs, made in the form of segments interconnected by jumpers to ensure a parallel electrical connection, the jumpers are located at the edges of the substrate, the last segment of printed circuit boards with LEDs installed on it ends with a current supply cable through which the unit is connected management.

Flexible printed circuit boards with LED light sources is a technical term that is commonly referred to as LED strips. The terms "LED strip" or "flexible printed circuit board" can be understood in the description in the singular or plural, unless otherwise indicated in the text.

The term equivalent to a control unit is a controller or an external controller.

The backing is a substantially continuous surface of a freely bendable and / or bendable material, for example, a fabric, a web of a polymer, for example, of polypropylene.

In addition, the phototherapy device is characterized in that the blanket-type part of the device has a cylindrical or oval shape.

In addition, the phototherapy device is characterized in that a part of the device such as a blanket can have a gap from the inner surface to the child's body in areas not in contact with the child's body. The gap size can be used as a temperature control element.

In addition, the phototherapy device is characterized in that flexible printed circuit boards with light sources in the form of LEDs are attached to the inner surface of the blanket-like part of the device in a spiral manner.

In addition, a phototherapy device is characterized by the fact that flexible printed circuit boards with light sources in the form of LEDs are made in a version without moisture protection, are attached to a substrate, and then poured onto a substrate, for example, with transparent silicone, while the fill height exceeds the height of the fixed LEDs , and the length of the fill can be part of the length of the blanket or its entire length.

In addition, the device for phototherapy is characterized by the fact that flexible printed circuit boards with light sources in the form of LEDs are made in the version with their filling with transparent silicone (version with moisture protection), are attached to the substrate, while the gap between them is filled on the substrate, for example, with silicone. in this case, the fill height does not exceed the height of the fixed LEDs, and the fill length can be part of the blanket length or its entire length. In both of the above examples, as a result of the pouring, the blanket-type device part acquires a monolithic flexible and resilient structure.

In addition, the device for phototherapy is characterized by the fact that the control unit (controller) has the basic function of monitoring and controlling the flowing current, which determines the radiation intensity of the LEDs.

In addition, the phototherapy device is characterized in that the control unit contains at least the following additional (optional) functions:

- timer on time,

- pulse on-off mode,

- a smooth increase in intensity followed by a smooth attenuation,

- monitoring the temperature inside the heated zone of the blanket in the volume limited by the device (light blanket).

In addition, the phototherapy device is characterized in that a part of the device, such as a blanket, has fastening elements, for example, in the form of adhesive tapes or zippers, has a collar and a cover.

The claimed useful model of a device for phototherapy of a newborn child is shown in the attached figures.

FIG. 1 phototherapy device, diagram of a variant with printed circuit boards attached in a zigzag pattern;

Fig.2a device, section A-A in the version of the LED strip with moisture protection of the light guides and filling the gaps with polymer;

FIG. 2b - device, section A-A in the version of an LED strip with moisture protection and bottom coating with a transparent polymer gasket;

FIG. 2c device, section A-A in the version of the LED strip without moisture protection of the optical fibers and filling the gaps with polymer;

FIG. 3 - a device, a variant of a light blanket rolled into a cylinder or an oval, with sections of printed circuit boards attached in a zigzag (overlapping connection);

FIG. 4 device, option of a solid light blanket (one LED strip, rolled into a roll);

FIG. 5 device with a collar on the child;

FIG. 6 photos of an experimental sample of the device.

FIG. 7 - photo of a model of an experimental device with a child (doll).

The device for phototherapy of newborns declared as a useful model (acceptable terms: "light blanket" or "phototherapy blanket") is a flexible substrate (base) 1 with linear dimensions allowing to cover the child's body from all sides. In the embodiment (Fig. 1) on the substrate 1 fixed in a known way (adhesive surface, glue, double-sided tape) zigzag segments 2 of flexible printed circuit boards with light sources 3 in the form of LEDs of the required radiation spectrum, (wavelength of the light source 460-490 nm, which corresponds to blue light).

The sections of the printed circuit boards are interconnected by jumpers 4 from a conductive wire to provide a parallel electrical connection. The jumpers are located at the edges of the substrate 1. The last section 2 of printed circuit boards with LEDs installed on it ends with a power supply cable 5, through which the control unit (external control controller) is connected 6. The control unit has the basic function of monitoring and controlling the flowing current, which determines the radiation intensity of the LEDs.

Additional (optional) functions of the control unit:

- timer on time,

- pulse on-off mode,

- a smooth increase in intensity followed by a smooth attenuation.

- monitoring the temperature inside the heated zone of the blanket in the volume limited by the device (light blanket).

The temperature-sensitive sensor (it can be a passive thermistor or an active temperature sensor) is connected to the control unit (controller) 6 via an additional cable (structurally, the cable can be combined with the LED power cable). The location of the sensor is as close as possible to flexible boards with radiation sources.

The temperature control circuit monitors the temperature in the heated area to eliminate the pumping effect and limits overheating above a preset threshold.

After fixing on the substrate 1 the mounted electrical circuit of the sections 2 of printed circuit boards with light sources 3, the structure is filled with a liquid self-hardening polymer 7, transparent or optionally, to a certain height, as will be discussed below in the options for using LED strips. The polymer is taken in the description as a general term, which is understood mainly as a silicone, self-curing at room temperature in various modifications (sealant, etc.). As described above, the mounted electrical circuit can have versions - uncoated and coated (version with moisture protection), while the versions of the mounted circuits can have different pouring heights. Unlike the prototype, the structure does not require an additional (protective) layer. So the prototype has an additional top layer in the blanket, and the LEDs are output to provide illumination of the child's body through the holes in the top layer and it is not shown whether the LEDs are protected from contact with the child's body or not. In the claimed utility model, this problem is solved with a guarantee.

During operation, the flat substrate is rolled into a cylinder around the patient's body and fixed in a cylindrical or oval state by any known method, for example, Velcro 8 (Fig. 3) or a zipper or other known method.

To exclude light from entering the child's eyes, the upper edge of the cylinder (or oval) is framed by a "collar" 9 (Fig. 5).

An embodiment of this device can be a design in which the sections of flexible boards with light sources, connected by jumpers, are replaced by a solid tape from a flexible printed circuit board with light sources installed on it, twisted into a spiral around a cylindrical or oval solid substrate (Fig. 4).

FIG. 2a shows a device in section A-A in the version of an LED strip (flexible printed circuit boards with light sources) with moisture protection of the light guides and filling the gaps with a polymer, for example, silicone. So the thickness of the substrate 1 can be different depending on the material used (fabric or polymer). When using a polymer such as polypropylene, the thickness of the backing t can be greater than that of the fabric. In addition, the polystyrene will provide good adhesion when mounting an LED strip having an adhesive bottom surface. Further, polypropylene, having a soft structure, improves the tactile properties of the light blanket, especially in combination with castable silicone. As an example of an LED strip, the RTW 2-5000SE 12V BLUE LED strip (3528, 300 LED, LUX) (ARL, 4.8 BT / M, IP65) 60 LED AT 1M can be used.

The height of filling the gaps between the LED strips with silicone is primarily determined by the height h of the LED strip. The above tape has h = 2.4 mm.

The fill, firstly, additionally strengthens the fastening of the LED strips to the substrate, and, secondly, it ensures that the upper edge of the fill is raised to the required level. A feature of silicone filling an LED strip with a waterproof layer is the fact that the height of filling T with silicone of the gaps between mounted LED strips can be lower than the upper edge of the LED coating, dropping almost to the lower edge of the waterproof coating of the LED (T min).

FIG. 2b shows the device in section A-A in the version of an LED strip with a waterproof coating 10 and a bottom coating with a transparent polymer gasket; This option is acceptable and the most economical. So a spacer of the required thickness and required dimensions, laid on the bottom of the blanket, with a covering of the bottom and partially of the sides (up to 50% of the perimeter of the light blanket) made of a transparent polymer, for example, silicone, may be sufficient and does not require filling the gaps between the ribbons, providing a good tactile sensation for the child without feeling a small belt height, for example, 2.4 mm, and taking into account the punching of the gasket (see the dotted line), the difference in heights is leveled to the limit.

FIG. 2c shows a device in section A-A in the version of an LED strip without moisture protection of the fibers and filling the gaps with polymer. In this case, a transparent polymer, such as transparent silicone, must be used. In this case, the fill height T should be higher than the height of the LED strip and, in fact, the maximum.

FIG. 3 shows a device in the form of a light blanket, rolled into a cylinder or an oval, with sections of printed circuit boards attached in a zigzag (overlapping);

FIG. 4 shows the device in the version with a solid light blanket (one LED strip, rolled into a roll);

FIG. 5 shows a device with a collar 8 on a child.

FIG. 6 shows a photo of an experimental sample of the device.

FIG. 7 shows a photo of a model of an experimental device with a child (doll).

The property of silicone sealants to maintain elasticity in a wide range of temperatures and in a long interval of product life is very appropriate for the claimed utility model. In the version, the use of a one-component or two-component sealant is allowed.

In the version with silicone sealant filling the electrical circuit mounted on the substrate, the substrate is smoother than in the glued version.

The tactile sensation from contact with such materials leaves a pleasant impression and, at least, does not harm the skin upon contact with such a surface. Tightness and resistance to aggressive liquids (urine, hydrogen peroxide, detergents) are provided by the design of the device.

The aesthetic appearance of the product is provided by a fabric cover that is worn on top of a "flat base" or "cocoon". The cover has a collar and a clasp.

The description contains only selected versions of the device.

The declared utility model meets the criteria of protectability. So the analysis of patent information and other literature, including Internet resources, allows us to conclude that the claimed utility model has the criterion of "novelty", and experimental testing of technical solutions given in the claimed utility model and consultations with leading experts on this problem and on enterprises for the production of medical equipment allow us to conclude that the utility model meets the criterion of "industrial applicability".

The claimed device for phototherapy of a newborn child meets modern requirements for such devices, is relatively simple, affordable and intended for widespread use, including the possibility of using it at home.

Claims (13)

1. A device for phototherapy of a newborn baby, which includes a part of the device surrounding the body of a newborn baby and containing a substrate, a light-emitting unit and a control unit, characterized in that the light-emitting unit consists of flexible printed circuit boards with light sources in the form of LEDs emitting blue light from wavelength 460-490 nanometers, while flexible printed circuit boards are attached to the substrate and connected to the control unit, and the specified part of the device surrounding the body is a monolithic flexible and elastic structure, and flexible printed circuit boards with light sources in the form of LEDs are made in the form of the sections connected by jumpers to ensure a parallel electrical connection, the jumpers are located along the edges of the substrate, the last section of printed circuit boards with LEDs installed on it ends with a current-carrying cable through which the control unit is connected. 2. A phototherapy device according to claim 1, wherein said portion of the device has a cylindrical or oval shape. 3. The device for phototherapy according to claim 1, characterized in that said part of the device may have a gap from the inner surface to the child's body in areas not in contact with the child's body. 4. The device for phototherapy according to claim. 1, characterized in that flexible printed circuit boards with light sources in the form of LEDs are attached to the inner surface of the specified part of the device in a spiral. 5. The device for phototherapy according to claim 1, characterized in that flexible printed circuit boards with light sources in the form of LEDs are made in the version without moisture protection, are attached to the substrate, and then poured onto the substrate, for example, with transparent silicone, while the fill height exceeds the height fixed LEDs, and the length of the fill can be part of the length of the device or its entire length. 6. The device for phototherapy according to claim 1, characterized in that flexible printed circuit boards with light sources in the form of LEDs are made in the version with their filling with transparent silicone, are attached to the substrate, while the gap between them is poured on the substrate, for example, with silicone, when In this case, the fill height does not exceed the height of the fixed LEDs, and the fill length can be part of the device's length or its entire length. 7. The device for phototherapy according to claim 1, characterized in that the control unit has a basic function of monitoring and controlling the flowing current, which determines the intensity of the light-emitting diode radiation. 8. The device for phototherapy according to claim 1, wherein the control unit contains at least the following additional functions: timer on time, pulse on-off mode, a smooth increase in intensity followed by a smooth attenuation, monitoring the temperature inside the heated zone of the device in the volume limited by the device. 9. A phototherapy device according to claim 1, characterized in that said part of the device has fastening elements, for example, in the form of adhesive tapes or zippers, has a collar and a cover.

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