RU79665U1 - UV DOSE CONTROL DEVICE - Google Patents

Abstract

The utility model relates to medical equipment, to devices for controlling exposure to ultraviolet radiation, to tanning salons and devices for the phototherapy of psoriasis, neurodermatitis, mycoses. The technical and medical result 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. The technical result is achieved by the fact that at least one photocell made in the form of a range finder, a unit for recommended doses of UV radiation, a unit for separately switching on UV emitters, an output of the range finder is connected to the input of the unit for recommended doses of UV irradiation and the inputs of the separate unit for the inclusion of UV - emitters, UV - emitters are made in the form of discharge lamps, and the unit for the separate inclusion of UV - emitters contains a timer. 1 s.p.f. 2 ill.

Description

The utility model 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.

A device for determining the time spent by a person under the influence of ultraviolet radiation, containing photodetectors for measuring the intensity of UV - radiation and the reflection coefficient of light by the skin, a device with the recommended time spent by a person under UV - radiation. Patent of the Russian Federation No. 2150973, IPC: G01J 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 by the corresponding inputs to the generator and the control unit, and the output with an indicator, the control unit is connected to a timer. Patent of the Russian Federation №2245523, IPC: G01J 1/42, 2004. Prototype.

The analogue and prototype are individual dosimeters for use in nature in the rays of sunlight.

The objective of the utility model is to create a device for controlling the dose of ultraviolet radiation for tanning salons and photochemotherapy devices for persons of any complexion with the formation of the required radiation dose, regardless of the patient’s size and estimating the time spent by a person under the influence of UV radiation.

The technical and medical result of the utility model 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

negative biomedical effects (erythema, aging and skin cancer, cataracts, keratitis).

The technical result is achieved by the fact that at least one photocell made in the form of a range finder, a unit for recommended doses of UV irradiation, a unit for separately activating UV emitters, an output of the range finder are connected to the ultraviolet radiation dose control device containing a photocell and a control unit the input node of the recommended doses of UV - radiation and the inputs of the node for separate inclusion of UV - emitters, UV - emitters are made in the form of discharge lamps, and the unit for separate inclusion of UV - emitters contains a timer.

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

The essence of the utility model 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 gas discharge lamps or in the form of photodiodes, 3 - section of the cab wall, 4 - stand with a reflective coating, 5 - patient.

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

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).

Patients have various dimensions, and ultraviolet emitters are stationary on the walls of the cab.

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 over the area of each section of the wall wall of the cab 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.

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 ballasting inductive devices are connected in series with node 6 of the recommended doses of UV - radiation. The power factor of inductive apparatus 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. Tumbler switch

put in the position of the clock. 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 corrected, depending on the distance, the signal from each specific range finder 1 ⁱ to the patient 5 is fed to the input of the separate switching 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. Set the time in minutes on the treatment clock corresponding to the duration of the irradiation session for each UV emitter 2 ⁱ , or the average time for all emitters.

Claims (1)

An ultraviolet radiation dose control device comprising a photocell and a control unit, characterized in that the device comprises at least one photocell made in the form of a range finder, a unit for recommended doses of UV radiation, a unit for separately activating UV emitters, the output of the range finder is connected to the input the site of the recommended doses of UV radiation and the inputs of the site of the separate inclusion of UV emitters, and the UV emitters are made in the form of discharge lamps, and the site of the separate inclusion of UV emitters contains a timer.