RU2708198C1 - Device for treating wound infection and dermatological diseases - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely for treating and preventing skin diseases, wound and burn surfaces with high bacterial contamination. Device comprises a radiator with a pulsed xenon lamp in a reflector and a power and control unit with a firing pulse generator, a storage capacitor, a charging device in the form of a high-voltage current source, a control circuit and a pulse transformer. Pulse gas-discharge lamp, the storage capacitor and the secondary winding of the pulse transformer are electrically connected so that they form a discharge circuit. Device also comprises a protective box of opaque materials with holes in the side walls and a hole in the upper edge above the treated part of the patient's body, radiator with a pulse gas-discharge lamp is installed on the upper edge of the box, the outlet hole of the radiator is coaxial to the hole in the upper edge of the box, and the holes in the side walls of the box are made with protective curtains of flexible opaque material.

EFFECT: disclosed is a device for treating wound infection and dermatologic diseases.

1 cl, 2 dwg

Description

The invention relates to medical equipment used in dermatology and surgery for the treatment and prevention of skin diseases, wound and burn surfaces with high bacterial contamination.

A device for treating wounds is known (patent RU No.2008042, IPC A61N 5/06, published 02.28.1994), comprising an irradiator with a source of ultraviolet radiation in the form of a pulsed gas discharge lamp, a reflector and a light filter, a power and control unit connected to the irradiator. The power and control unit contains a constant voltage source, a storage capacitor connected to a constant voltage source, and an ignition pulse generator. In this case, the pulsed discharge lamp and the storage capacitor are electrically connected to each other so that they form a discharge circuit connected to the ignition pulse generator by means of a pulse transformer.

This device allows you to reduce the time of the treatment procedure and eliminate negative side effects during irradiation. These results are achieved through the use of high-intensity pulsed UV radiation of a continuous spectrum.

A device is also known for the treatment and prevention of dermatological diseases and burn wounds (patent RU No. 2088286, IPC A61N 5/06, published on 08.27.1997). The device comprises an irradiator with a pulsed discharge lamp installed in the reflector, a light filter and a power and control unit connected to the irradiator. The power supply and control unit includes a pulse transformer, an ignition pulse generator connected to the primary winding of the pulse transformer, a storage capacitor, a charger in the form of a high-voltage direct current source connected to the storage capacitor and the secondary winding of the pulse transformer, and a control circuit connected to the charging device and to the ignition pulse generator. In this case, the pulsed discharge lamp, the storage capacitor and the secondary winding of the pulse transformer are electrically connected to each other so that they form a discharge circuit.

A device for the treatment and prevention of dermatological diseases and burn wounds according to the patent RU No. 2641068, adopted as a prototype. The known device includes an irradiator with a pulsed gas discharge lamp installed in the reflector, and a power and control unit connected to the irradiator, the power and control unit includes includes a pulse transformer, an ignition pulse generator connected to the primary winding of a pulse transformer, a storage capacitor, a charger connected to a storage con ensatorom and the secondary winding of the pulse transformer, and a control circuit connected to the charger, wherein the pulsed gas discharge lamp, a storage capacitor and the secondary winding of the pulse transformer are electrically connected to each other so as to form a discharge circuit.

The common disadvantages of analogues and prototype is a significant level of scattered radiation of powerful light flashes formed during the treatment procedure, mainly due to reflection from the treated surface. This diffuse pulsed repetitive radiation creates uncomfortable conditions for the patient and the doctor, and it is precisely the pulsed nature of the radiation that creates a noticeable psychological burden on the nervous system. The use of goggles does not save the situation, because during the procedure, the doctor must observe the location of the light spot on the affected surface of the patient’s body, and with highly darkened glasses loses this opportunity.

In addition, under these conditions, maintaining the recommended location of the device irradiator at a height of 50 + 10 mm from the surface to be treated, even in the presence of a remote position sensor, is also difficult.

The technical result from the use of the proposed device for the treatment of wound infections and dermatological diseases is to increase the comfort of the treatment procedure for the doctor and patient due to the almost complete exclusion of scattered pulsed radiation, as well as to increase the stability of the dose received by the wound surface treated and, therefore, the predictability of the resulting treatment effect for the invariance of the irradiator relative to the treated surface of the patient’s body enta.

The specified technical result when using the proposed device for the treatment of wound infections and dermatological diseases is achieved by the fact that the device further comprises a protective box of opaque materials with holes in the side walls to accommodate the treated limb or patient’s body and with a hole in the upper edge above the treated part of the patient’s body, wherein the irradiator with a pulsed discharge lamp is mounted on the upper face of the duct in such a way that the outlet of the irradiator with Ba with an opening in the top face of the box and the openings in the side walls of the box are made with flexible protective curtain of opaque material.

The irradiator can be installed with the possibility of adjusting the position in height, the hole in the upper face of the box is made to fit the size of the irradiator, and the gaps between the irradiator and the hole in the upper face of the box are draped with a flexible opaque material.

The invention is illustrated by graphic materials, where in FIG. 1 shows the arrangement of elements of a device for treating wound infections and dermatological diseases relative to the treated part of the patient’s body, FIG. 2 is a functional diagram of a power supply and control unit.

A device for treating wound infections and dermatological diseases comprises an irradiator 1 with a pulsed gas discharge lamp and a reflector and a power and control unit 2 electrically connected to the irradiator with a flexible cable 3.

The irradiator 1 is installed on the upper edge of the protective box 4 made of opaque materials, for example, painted plastic. In the upper face of the protective box 4 there is a hole for the output of radiation, while the output hole of the irradiator 1 and the hole in the upper face of the box 4 are coaxial.

The irradiator 1 can be installed on the height adjustment mechanism 5, in this case, the hole in the upper face of the duct 4 is made to fit the size of the irradiator, and the gaps between the irradiator and the hole in the upper face of the duct are draped with a flexible opaque material. The adjustment mechanism 5 can be performed in various ways, for example, in the form of a platform with several fixed positions, or based on a rack and pinion moving device. A specific constructive implementation of the mechanism 5 is not essential for solving the task and achieving the specified technical result.

In the side walls of the box 4 holes are made with protective shutters 6 of flexible opaque material.

The power supply and control unit 2 contains a control circuit 7, a charger 8, a storage capacitor 9, an electronic switch 10, an ignition pulse generator 11 and a pulse boost transformer 12.

The control circuit 7 is based on a microprocessor and it contains functionally memory cells, a pulse counter, comparators of the charging voltage.

Charger 8 is made in the form of an AC / DC converter and is functionally a high voltage current source.

An electronic switch 10 is connected between the control circuit 7 and the ignition pulse generator 11 and can be performed, for example, based on a transistor or thyristor.

The ignition pulse generator 11 is a relatively low-current discharge circuit based on a capacitor and thyristor, generating voltage pulses of 600 ... 800 V and a duration of 1 ... 10 μs.

The pulse transformer 12 is made on a ferrite ring, the primary winding is 1 ... 2 turns, the secondary winding is 20 ... 30 turns.

The storage capacitor 9, the secondary winding of the pulse transformer 12 and the pulse gas discharge lamp 13, located in the irradiator 1, are electrically connected to each other and form a discharge circuit.

In an example of the implementation of the proposed device for the treatment of wound infections and dermatological diseases, a Zarya pulsed high-intensity optical irradiation device manufactured by State Ryazan Instrument Plant JSC (GRPZ JSC) is used as a source of pulsed radiation of a wide spectral composition.

The proposed device operates as follows.

A protective box 4 is placed over the affected part of the patient’s body, as shown in FIG. 1 for the case of limb treatment. Soft protective curtains 6 boxes 4 twitch. An irradiator 1 is mounted on the upper surface of the protective box 4, connected by a cable 3 to the power supply and control unit 2. If there is a movement mechanism 5, the position of the irradiator 1 is height-adjustable to ensure the optimal distance between the irradiator and the surface being treated.

The doctor-operator, depending on the nature of the disease and the degree of tissue damage, sets the required radiation dose by entering the appropriate number of pulses into the memory cell of the control circuit 7 using the controls and turns on the power supply and control unit 2 in the radiation mode.

The control circuit 7 starts the charger 8 and monitors the voltage at the storage capacitor 9. Upon reaching the required value of the charging voltage (1.2 ... 1.5 kV), the control circuit 7 generates a control signal, which through a closed electronic key 10 is supplied to the ignition pulse generator 11 , which, in turn, generates an ignition pulse in the form of a voltage surge, causing a current pulse to appear in the primary winding of the pulse transformer 12. At the secondary winding of the pulse transformer 12, a pulse with an amplitude of 15 ... 20 kV is pierced, which pierces the interelectrode gap of a pulsed gas discharge lamp 13 and a storage capacitor 9 starts to discharge through the primary conducting channel formed in the xenon atmosphere. During the discharge of the storage capacitor 9, a powerful discharge current pulse is generated, which causes intense heating and ionization of xenon . The resulting xenon plasma emits intensely in a wide spectral region, including ultraviolet (UV), visible and infrared (IR) radiation. This radiation through the hole in the upper face of the protective box 4 falls on the treated surface and provides a therapeutic effect.

As the discharge of the storage capacitor 9 ends, the inert gas plasma in the lamp cools, the gas goes into an atomic state, the radiation ceases. The circuit returns to its original state.

The control circuit 7 using the comparator included in it determines the discharge of the storage capacitor 9 and fixes the irradiation pulse in the pulse counter.

Then the operation process is cyclically repeated: the control circuit 7 turns on the charger 8, after charging the storage capacitor 9 to a predetermined voltage, an ignition pulse is generated, etc.

This ensures that the required dose of exposure to the affected surface of the patient’s body is ensured until the pulse counter readings are equal to the required number of radiation pulses entered into the memory cell of the control circuit 7.

When performing the treatment procedure, due to the distinctive design features of the proposed device, the effect of pulsed scattered radiation on the doctor and the patient is eliminated, thereby increasing the comfort of the procedure. Moreover, during the procedure, a constant and optimal location of the irradiator relative to the treated wound surface is maintained, which leads to increased stability of the radiation dose received by the treated surface and, therefore, to the predictability of the therapeutic effect.

Thus, the proposed method and device provide irradiation of affected, including extensive, surfaces of the patient’s body with a high degree of uniformity and stability of the dose, which allows to achieve high stability, repeatability and predictability of the therapeutic effect in the treatment of wound infections and dermatological diseases.

Claims (2)

1. A device for the treatment of wound infections and dermatological diseases, comprising an irradiator with a pulsed gas discharge lamp installed in the reflector, and a power and control unit connected to the irradiator, the power and control unit includes a pulse transformer, an ignition pulse generator connected to the primary winding a pulse transformer, a storage capacitor, a charger connected to a storage capacitor and a secondary winding of a pulse transformer, and a control circuit, under connected to the charger, the pulsed discharge lamp, the storage capacitor and the secondary winding of the pulsed transformer are electrically connected to each other so as to form a discharge circuit, characterized in that the device further comprises a protective box of opaque materials with holes in the side walls to accommodate the limb to be treated or the patient’s body and with a hole in the upper edge above the treated part of the patient’s body, while the irradiator with a pulse discharge lamp It is mounted on the upper face of the box in such a way that the irradiator outlet is aligned with the hole in the upper face of the box, and the holes in the side walls of the box are made with protective curtains made of flexible opaque material. 2. The device according to claim 1, characterized in that the irradiator is installed with the possibility of adjusting the position in height, the hole in the upper face of the duct is made to fit the size of the irradiator, and the gaps between the irradiator and the hole in the upper face of the duct are draped with a flexible opaque material.

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