RU203095U1 - EXCIMER LAMP FOR DERMATOLOGY - Google Patents

Abstract

The device relates to medical technology, namely to devices for the treatment and prevention of dermatological diseases such as psoriasis, vitiligo, etc. The purpose of the new device is to provide the ability to save data about the patient and the sessions of phototherapy. The technical result is that the excimer lamp for dermatology, containing an emitter 4, a switching power supply 3, a distance sensor 5 and an interface controller 1, additionally contains a dialogue ribbon interface containing several tabs, which allows you to enter, save and correct patient data, information about photo sessions, a performance monitoring unit 10 of the control unit lamp, as well as a video camera 6 for fast and accurate positioning of the emitters 4 over the irradiated area and for fixing photographs of the skin of patients.

Description

The device belongs to medical technology and is intended for the treatment and prevention of dermatological diseases such as psoriasis, vitiligo and various forms of dermatitis.

Currently, narrow-band UVB phototherapy of skin diseases is widely and effectively used using excimer lasers at a wavelength of 308 nm and low-pressure gas-discharge lamps with mercury vapor at a wavelength of 311 nm. However, excimer lasers are expensive equipment, they are structurally complex and expensive to maintain, and mercury lamps have extremely unstable UV radiation power, which depends on the ambient temperature and lamp life, and there is also a need to warm up before using them. Therefore, there is a tendency in the world to replace excimer lasers and mercury lamps with XeCl excilamps, which provide high stability of narrow-band UV radiation at a wavelength of 308 nm and have a service life of more than 10,000 hours. The stability of UV radiation of excilamps is determined by the absence of metal vapors in the working gas and the absence of chemical contact of the electrodes in the working gas, which does not require preliminary heating: immediately after switching on, the lamp is ready for operation [1]. The stability of the UV radiation of such devices is necessary to accurately deliver the UV dose to the patient's skin. Otherwise, the patient can either receive a lower UV dose, which will lead to a decrease in the effectiveness of phototherapy, or exceed the required UV dose, which can lead to UV burns of the skin and the risk of the formation of neoplasms, including cancer.

Known devices based on XeCl excilamps developed for dermatology, for example, a lamp of the German company AlmaLasers "308 EximerSystem" [2] or a lamp of the Italian company DEKA M.E.L.A. "Excilite μ" [3], where the selected dose is calculated using the distance limited by a special frame (distance limiter) fixed around the radiating surface of the device. In this case, there is an undesirable contact of parts of the device with the patient's skin; moreover, during phototherapy using these analogs, there is often a random change in the distance set by the doctor from the surface of the emitter to the irradiated skin area, which leads to a sharp change in the UV dose and, as a result, to a decrease the effectiveness of phototherapy.

The closest in technical essence to the claimed device is a "Device for the treatment of skin diseases" [4], which also contains a XeCl emitter, a switching power supply, a distance sensor and a software controller. The distance sensor was used to measure the distance from the patient's skin to the surface of the UV emitter. The controller software made it possible to automatically calculate and correct the exposure time of the patient to the exact UV dose, which corresponded to the distance measured by the distance sensor. Controlling the accuracy of the UV dose, which must correspond to the measured distance from the patient's skin to the surface of the UV emitter, increases the effectiveness of phototherapy and eliminates the likelihood of UV skin burns.

In the device, taken as a prototype, the software interface only allowed to enter the required dose of ultraviolet radiation and display information about the remaining time of the photo session. Its disadvantages, in our opinion, include the inability to record the full information of the treatment parameters (distance to the patient's skin, the remainder of the radiation dose, information on exceeding the effective distance to the patient's skin for treatment); the absence of a patient journal, which would contain information about the patient (last name, first name, patronymic, age, gender, diagnosis, minimum erythemal dose of the patient, insurance policy number, etc.); there is also no possibility of saving data about the photo session and the patient (date of the session, dose received by the patient, photograph of the irradiated skin area after each session).

The purpose of creating a new device (Excimer lamp for dermatology) is to provide the ability to save data about the patient and about the phototherapy sessions carried out with the preservation of photographs of the irradiated skin areas after each session, the ability to visually analyze the effectiveness of phototherapy and the patient's condition.

The technical result consists in the fact that the excimer lamp for dermatology, containing an emitter, a pulsed power supply, a distance sensor and an interface controller, additionally contains a dialog tape interface containing several tabs, which allows you to enter, save, and correct patient data, information about photo sessions, control unit for the lamp control unit.

The essence of the technical solution is illustrated by illustrations, where:

in fig. 1 is a block diagram of an excimer lamp device;

in fig. 2 shows the dialog ribbon interface of an excimer lamp with several tab pages.

The inventive device contains: a software controller 1 (Fig. 1), a touch screen 2, a power supply unit 3 of a UV emitter, a UV emitter 4, a distance sensor 5, a video camera 6, UV radiation 7, an irradiated surface 8, an image of the irradiation area 9, an operability control unit ten.

The software controller 1 contains specially developed software, reads data from the camera 5 and the distance sensor 6, controls the power supply 3 and displays the necessary information on the screen 2.

The tape dialog interface of the device (Fig. 2), displayed by means of the touch screen 2 (Fig. 1), contains several tabbed pages:

In the "Patient" tab (Fig. 2a), the patient data is entered and displayed: name, surname, patronymic, age, insurance policy number, diagnosis, minimum erythemal dose of the patient (MED). Data is entered and corrected using the virtual keyboard displayed in the same tab. Also in this tab you can search for and recall patient information.

The "Therapy" tab (Fig. 2b) is intended for carrying out the phototherapy process at a given UV dose. This tab also displays the current dose, the distance from the emitters to the irradiated surface and the remainder of the photo session. To start and interrupt the photo session, use the "Start" and "Stop" buttons. Since the inventive device does not have a distance limiter indicating the boundaries of the irradiation zone, positioning the device over the treatment zone is not an easy task. Our device has a built-in fast positioning system in the "Therapy" tab, where the irradiation zone is displayed on the screen. If the distance to the irradiated object of 12 cm is exceeded, the work of the UV emitters is interrupted, since such a distance is considered ineffective. The resumption of work of UV emitters occurs automatically when the distance is reduced to less than 12 cm.

To call up and view information about the patient's phototherapy sessions, the "Diary" tab was created (Fig. 2c). The patient's name and initials, session number, session date are displayed here. Also, using the virtual keyboard in the "Notes" window, you can enter and save additional text information.

The device automatically saves photographs of the irradiated area before and after the photo session. When you touch the screen in the still image area, the photo is enlarged. The ability to save information about phototherapy sessions allows you to analyze the dynamics of phototherapy for each patient.

The "Settings" tab (Fig. 2d) serves to debug the operation of the device. Here you can set up communication with a personal computer via WiFi, select the language of the dialog interface, set the date and time, and view the operating time of the UV emitters. There is a possibility of forced switching on of UV emitters. This function is necessary when measuring the UV power produced by the emitters, carried out during the calibration of the device. When checking the parameters of the device or when replacing UV emitters, it is possible to correct the function of calculating the current UV dose and the remainder of the photo session without changing the software of the excimer lamp control unit. This is done by changing the "Correction" parameter.

Since the lamp control unit is made on the basis of a microprocessor, which, like all computer equipment, is capable of stopping its work ("freeze") for one reason or another, there is a possibility of uncontrolled operation of the UV lamp emitters. To exclude this possibility, an additional unit 10 for monitoring the operability (Fig. 1) of the lamp control unit was built into the device. When the control unit freezes, the lamp operability control unit stops the UV emitters and notifies about it with a corresponding sound signal. This function is aimed at excluding UV burns of the patient's skin in case of certain malfunctions of the control unit. The UV dose control system can also be applied to emitters based on excimer lamps, as well as emitters based on UV LEDs or mercury lamps.

So, the technical result is achieved by the fact that the excimer lamp for dermatology, containing an emitter, a pulsed power supply, a distance sensor and an interface controller, additionally contains a dialogue ribbon interface containing several tabs, which allows you to enter, save and correct patient data, information about photo sessions and lamp health control unit. At the same time, the device operability control unit excludes the possibility of UV burns in the event of a device malfunction.

Literature:

1. M.I. Lomaev, E.A. Sosnin, V.F. Tarasenko, D.V. Schitz, B.C. Skakun, M.V. Erofeev, A.A. Lysenko Excilamps of barrier and capacitive discharges and their application (review) // Instruments and experimental techniques. - M., 2006. - No. 5. - S. 5-26.

2.http: //www.alma-deutschland.de/produkte/308-excimer-system

3.http: //www.dekalaser.com/en-GB/product.aspx?item=excilite&tab=1

4. Patent for utility model RU 160730 Device for the treatment of skin diseases, priority from 20.08.2015.

Claims (1)

Excimer lamp for dermatology, containing an emitter, a switching power supply, a distance sensor and an interface controller, characterized in that the lamp contains a dialogue ribbon interface containing several tabs that allows you to enter, save and correct patient data, information about photo sessions, a unit for monitoring the unit's performance lamp control.

Images