RU2385451C2 - Ultraviolet dose monitor - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: monitor accommodates a cabin with its wall comprising sections whereon UV lamps, a range finder, a recommended UV dose junction, an UV lamps separate switching node. An output of the range finder is connected to an input of the recommended UV dose junction and inputs of the UV lamps separate switching node.

EFFECT: invention allows generating radiation doses irrespective of the patient's sizes that ensures to eliminate the negative medical and biologic effects.

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Description

The invention relates to medical equipment, to devices for controlling exposure to ultraviolet radiation, in particular to tanning salons and devices for the phototherapy of psoriasis, neurodermatitis, mycoses.

Tanning beds with ultraviolet lamps are known (Product List by IONTO COMED (Germany), Dr. KERN (Germany) and PHILIPS (Holland), 1998).

The disadvantage of tanning salons is the lack of a therapeutic effect and natural solar thermal exposure, which is necessary for the perception of ultraviolet radiation.

Known ultraviolet irradiator UFO-03-250N, containing sources of ultraviolet and infrared radiation (Technical conditions 12MO. 242.00217, Register No. 005/018778, Gosstandart of Russia, 1989).

The disadvantage of the irradiator is the low efficiency of light therapy, the lack of automatic control, the limited exposure zone and low reliability of the infrared radiation source.

The Waldman UV-7001 installation (Germany) is a tetrahedral cabin designed for the treatment of skin diseases using PUVA therapy, selective phototherapy and only the lower body. The Waldman UV-7001 installation contains two sets of ultraviolet lamps for various purposes: 12 lamps for PUVA therapy and 12 lamps for tanning purposes.

A device for photochemotherapy is known, the cabin wall of which is made in the form of sections connected by hinges with the possibility of forming a closed loop in the form of a lower tier, UV emitters connected to the power system are installed on the inside of each section, there is a stand inside the camera (V.M. Bogolyubov et al. “General physiotherapy”, M., Pravda, 1998, p.196, fig. 67). The disadvantage of the installation is selective body therapy, because the head, neck, shoulders, and also the low efficiency of treating the legs and crotch fall out of the irradiated area.

A device for photochemotherapy with a cabin, the wall of which is made in the form of sections connected by hinges with the possibility of forming a closed loop in the form of a lower tier, on the inner side of each section there are UV emitters connected to the power system, there is a stand inside the camera, the cabin is equipped the upper tier, on the inner side of the sections of which UV-emitters are installed, and the power system contains a unit configured to separately and jointly enable the lower and upper tiers (Patent of the Russian Federation No. 2291724, IPC: A61N 5/06, 2005).

A device for determining the residence time of a person under the influence of ultraviolet radiation, containing photodetectors for measuring the intensity of UV radiation and the light reflection coefficient of the skin, a device with the recommended time spent by a person under UV radiation (Patent of the Russian Federation No. 2150973, IPC: G11J 1/42, 2000).

A known device for controlling the dose of ultraviolet radiation, containing a photocell with a filter installed in front of it, a generator, a counter, a control unit with a timer and an indicator. The photocell is included in the generator feedback loop, the counter is connected to the generator and the control unit by the corresponding inputs, and the indicator is connected to the output, the control unit is connected to the timer (Russian Federation Patent No. 2245523, IPC: G01J 1/42, 2004).

Analogs are individual dosimeters for use in nature in the rays of sunlight.

A device for photochemotherapy, including a cabin, the wall of which is made in sections, is installed on the inner side of each section with UV emitters associated with the power system, the power system contains a unit configured to separately and jointly enable the lower and upper tiers (Patent of the Russian Federation No. 2291724, IPC: A61N 5/06, 2007. - Prototype).

The objective of the invention is the creation of a device with a dose control of ultraviolet radiation for tanning salons and photochemotherapy devices (PCT) for people of any complexion with the formation of the required radiation dose, regardless of the patient's size and estimate the time spent by a person under the influence of UV radiation.

The technical and medical result of the invention is photochemotherapy in the formation of the required radiation dose, regardless of the patient’s size when determining the time spent by a person under the influence of UV radiation, eliminating the occurrence of negative biomedical effects (erythema, aging and skin cancer, cataracts, keratitis).

The technical result is achieved by the fact that the photochemotherapy device, including the cab, has UV emitters connected to the power system on the inside of the cab walls, the power system contains a unit for separately and jointly turning on the UV emitters, is equipped with a range finder and a unit for the recommended doses of UV radiation , a separate and joint inclusion unit for UV emitters, wherein the output of the range finder is connected to the input of the recommended dose unit for UV irradiation and the inputs of the separate inclusion unit for UV emitters. UV emitters are made in the form of discharge lamps, and the unit for separate inclusion of UV emitters contains a timer. UV emitters are made in the form of LEDs, and the unit for separate inclusion of UV emitters contains a rheostat.

The device is intended for use in physiotherapy departments, medical institutions, skin and cancer clinics, in tanning salons. The spectrum of ultraviolet radiation is in the range of 320-400 nm.

The invention is illustrated in figures 1 and 2.

Figure 1 schematically illustrates a sectional view of a top view of a photochemotherapy booth, where 1 ⁱ is a range finder, 2 ⁱ are UV emitters, i-1, 2 ... n are the serial number of the emitter, UV emitters are made in the form of discharge lamps or in the form of photodiodes, 3 - a section of the cab wall, 4 - a stand with a reflective coating, 5 - a patient.

Figure 2 schematically shows the order of signal transmission from the range finder to control the surface dose of the patient, where 1 ⁱ is the range finder, 6 is the site of the recommended doses of UV radiation, 7 is the unit for separately turning on the UV emitters 2 ⁱ through a timer or rheostat.

Both tanning salons and photochemotherapy devices have a common design flaw, namely, the cabin in which the patient is irradiated has a limited volume (perimeter).

The device for controlling the dose of ultraviolet radiation can be used both for local exposure and for general exposure of the body surface. In one case, the emitter is made in the form of a separate screen, in the other - in the form of a cabin.

Patients have various sizes, and sources of ultraviolet radiation are stationary.

Existing tanning salons and installations for UV procedures do not provide for a dynamic change in the surface dose of UV radiation for a particular patient.

Since the perimeter and volume of the cabins are constant or the distance from the radiation source to the patient’s location is the same, it is necessary to change either the brightness of the emitters or change the exposure of each emitter (or give an average exposure) depending on the size of the patient 5.

The patient’s dimensions significantly change the distance from the surface of the patient’s skin 5 to a specific UV emitter 2 ⁱ . UV emitters 2 ⁱ are located uniformly in area of each section of the radiation source, in our example, the walls of the cabin 3.

Consider the operation of a device for controlling the dose of ultraviolet radiation using the example of a photochemotherapy unit.

The installation operates in automatic mode - turning on and off the set time of emission of gas discharge lamps is carried out using a "timer" according to node 6 of the recommended doses of UV radiation, depending on the distance of the UV emitter 2 ⁱ to the patient’s skin surface 5.

Or set the residence time of the patient 5 under the influence of UV emitters 2 ⁱ made on photodiodes by changing their brightness from the rheostat.

On the front panel of the device are procedural hours, buttons and warning lights. The electrical circuit of the installation ensures the operation of UV-emitters 2 ⁱ from the treatment hours (operation in the "dose-hours" mode).

UV emitters 2 ⁱ with ballasts inductive devices are connected in series with node 6 of the recommended doses of UV radiation.

The power factor of inductive devices is compensated by capacitors.

Reflecting stand 4 allows for effective irradiation of the legs, perineum, ankle and feet. At the beginning of operation, the circuit breaker and the toggle switch are set to the ON position. In this case, the warning lamp should light up. The toggle switch is set to the CLOCK position. Enter the patient 5 into the cabin, put in the center of the stand 4, close the cabin.

After switching on, the signal from the range finder 1 ^{i is} fed to the input of the node 6 of the recommended doses of UV radiation.

Then, the signal, adjusted depending on the distance, from each specific range finder 1 ⁱ to the patient 5 is fed to the input of the separate switching on unit 7 of the UV emitters 2 ⁱ .

The node 7 separate inclusion of UV emitters gives the command to turn on a specific emitter 2 ⁱ or all together. The time in minutes is set on the treatment clock, which corresponds to the duration of the irradiation session for each UV emitter 2 ⁱ , or the average time for all emitters.

Claims (1)

A device for photochemotherapy, including a cabin, the wall of which is made in the form of sections on which UV emitters are located, characterized in that it is equipped with a range finder, a node for recommended doses of UV radiation and a separate unit for switching on the UV emitters, while the output of the range finder is connected to the input site recommended doses of radiation and the inputs of the site separate inclusion of UV emitters.

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