RU2409398C1 - Arrangement for preventive and therapeutic radiation - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to phototherapeutic equipment. An arrangement comprises a plasmatron with plasma-forming and stabilising nozzles, sources of plasma-forming and stabilising gases supplied to the plasmatron while in operation, two spectrum-forming elements with axial passages mounted in outlets of said nozzles of the plasmatron, current source for generating plasma arc of the plasmatron and a switchboard of the spectrum-forming elements. The switchboard is attached to the current source and spectrum-forming elements with enabled connection of the spectrum-forming elements to a plasma arc circuit either separately, or simultaneously.

EFFECT: use of the invention shall allow widening a spectrum of therapeutic radiation, enable to control it in the course of operation.

4 cl, 1 dwg

Description

FIELD OF THE INVENTION

The invention relates to medicine, more specifically to radiotherapy (light therapy), and is intended for use in preventive and therapeutic exposure to light, infrared and ultraviolet rays.

State of the art

A device for prophylactic and therapeutic irradiation, containing an electric arc apparatus with electrodes of ferromanganese alloys. The device is powered by alternating current through a transformer, in the secondary circuit of which the inductor is connected. One of the electrodes is a piece of a ferromanganese alloy, the other is a rod made of a mixture of a ferromanganese alloy with coal (described in USSR author's certificate No. 101672, class A61N 5/06, 1949).

Signs that are common to the known and claimed technical solutions are the presence of a spectrum-forming element (electrode) and an ionization generator of the material of the spectrum-forming element.

The reason that prevents obtaining the required technical result in a known technical solution is the use of an electrode as the sole spectroforming element. This leads to low radiation efficiency (25%), the inability to control the irradiation spectrum during operation, as well as low environmental performance during operation (large amount of harmful gas emissions, spatter of liquid metal droplets).

The closest technical analogue (prototype) is a device for preventive and therapeutic irradiation, containing a plasmatron with stabilizing and plasma forming nozzles, sources of plasma forming and stabilizing gases supplied to the plasmatron during its operation, two spectroforming elements with axial channels installed in the output channels of the mentioned nozzles a plasma torch, as well as a current source for the formation of a plasma arc of a plasma torch (RF patent No. 2062133, CL A61N 5/06, Bull. No. 17 from 06/20/1996).

Signs that are common to the known and claimed solutions are the presence of a plasma torch with stabilizing and plasma forming nozzles, sources of plasma forming and stabilizing gases supplied to the plasma torch during its operation, two spectrum-forming elements with axial channels installed in the output channels of the mentioned nozzles of the plasma torch, and also a current source for the formation of a plasma arc of a plasma torch.

The reason that prevents obtaining the required technical result in a known technical solution is that a change in the radiation spectrum is possible only when the spectrum-forming element is replaced, and a change in the radiation power is controlled only by the plasma arc current, which increases the heat load on the spectrum-forming element (can lead to its melting )

SUMMARY OF THE INVENTION

The problem to which the invention is directed, is to expand the radiation spectrum, providing the ability to control the radiation spectrum in the process, as well as to increase reliability.

The technical result, which mediates the solution of this problem, lies in the possibility of electrical switching of the spectrum-forming elements: the inclusion of spectrum-forming elements in the electric circuit of the plasma arc simultaneously allows you to distribute the arc power into two elements, which increases the resource of their work; the inclusion of spectrum-forming elements in the electric circuit of the plasma arc in turn makes it possible to cool an element not included in the arc circuit, which increases the reliability of the device. In addition, in the manufacture of spectrum-forming elements from different materials, it becomes possible to periodically change the spectrum and radiation power during operation of the device.

The technical result also consists in the fact that changing the polarity of the connection of the spectrum-forming elements (anode or cathode) allows you to drastically change the spectrum and radiation intensity due to the strong difference between the processes on the cathode electrode and the anode electrode. The introduction of spectrum-forming components into the plasma torch electrode allows you to expand the radiation spectrum of the device. The use of a combination of various gases supplied to the plasma-forming and stabilizing nozzles allows one to additionally change the radiation spectrum and, in addition, change the ion composition of the heat stream, which expands the therapeutic effect of irradiation.

The technical result is achieved in that the device for preventive and therapeutic irradiation contains a plasmatron with a plasma-forming and stabilizing nozzles, sources of plasma-forming and stabilizing gases supplied to the plasma torch during its operation, two spectrum-forming elements with axial channels installed in the output channels of the mentioned nozzles of the plasma torch, source electric current for the formation of a plasma arc of a plasma torch and a switch of spectrum-forming elements connected to a current source and a spectro Braz elements, with spektroobrazuyuschih switching elements in the electric circuit of the plasma arc individually or simultaneously.

The technical result is also achieved by the fact that the device contains a polarity switch connected to a current source, spectrum-forming elements and a plasma torch electrode, while this switch is configured to turn on the spectrum-forming elements so that these elements can be anodes or cathodes of the plasma arc or alternately change the polarity.

A technical result is also achieved by the fact that the plasma torch electrode contains spectrum-forming components.

The technical result is also achieved in that the plasma-forming and stabilizing gases differ in composition.

New features of the claimed technical solution are the presence of a switch of spectrum-forming elements connected to a current source and spectrum-forming elements with the possibility of including spectrum-forming elements in the electric circuit of the plasma arc individually or simultaneously.

New features also include the presence of a polarity switch connected to a current source, spectrum-forming elements and a plasma torch electrode, while this switch is configured to turn on the spectrum-forming elements so that these elements can be anodes or cathodes of the plasma arc or alternate polarity. In addition, the plasma torch electrode contains spectrum-forming components, and the plasma-forming and stabilizing gases differ in composition.

List of drawings

The drawing shows a diagram of a device for preventive and therapeutic exposure.

Information confirming the possibility of carrying out the invention

The device comprises a plasmatron consisting of an electrode 1, a plasma-forming 2, and a stabilizing 3 nozzle; spectrum-forming elements 4 and 5 with an axial channel 6 installed in the output channels 7 and 8 of the plasma-forming 2 and stabilizing 3 nozzles, respectively; a plasma arc power source 9 connected to the electrode 1 and plasma-forming 2 and stabilizing 3 nozzles, and a switch 10 of the spectrum-forming elements (two switches) and a polarity switch 11 (switches) are installed in the nozzles connecting circuit to the power source. During the operation of the device, plasma-forming gas is supplied to the cavity of the plasma forming nozzle 2, and a stabilizing gas is supplied to the stabilizing nozzle 3 (gas sources and gas supply channels are not shown). Moreover, the gases can be of the same composition (for example, argon) or different (for example, argon in the cavity of the plasma forming nozzle 2 and air in the cavity of the stabilizing nozzle 3). The electrode 1 may contain spectrum-forming components.

The operation of the device is as follows.

The supply of plasma-forming and stabilizing gases is turned on, the power source of the plasma arc 9 is turned on, and the electric arc between the electrode 1 and the plasma-forming 2 or stabilizing 3 nozzles is ignited, the spectrum-forming elements 4 and 5 are installed, which are installed in the plasma-forming 2 and stabilizing 3 nozzles, respectively. The plasma arc can burn between the electrode 1 and the spectrum-forming elements 4 and 5 at the same time or in turn, the combustion of the arc is controlled by the switch 10. If necessary, the polarity of the connection of the electrode 1 and nozzles 2 and 3 can be changed using the switch 11. The composition of the plasma-forming and stabilizing gases may differ. The radiation spectrum is determined by the composition of the spectrum-forming elements 4 and 5, the composition of the gases, as well as the presence of the spectrum-forming elements in the electrode 1.

An example of a specific implementation.

The device was operated on a plasma arc current of 30-70 A, a plasma-forming argon gas was supplied with a flow rate of 1.0-2.0 l / min, a stabilizing gas was supplied with air with a flow rate of 1.0-2.0 l / min, the spectrum-forming elements were made of high nickel complex alloy. The efficiency of the irradiating radiation was at least 80%, the emission spectrum was from ultraviolet to infrared. With a duty cycle of 5 minutes and 5 minutes, the duration of the operation of the device is not limited.

Claims (4)

1. Device for preventive and therapeutic irradiation, containing a plasmatron with a plasma-forming and stabilizing nozzles, sources of plasma-forming and stabilizing gases supplied to the plasma torch during its operation, two spectrum-forming elements with axial channels installed in the output channels of the mentioned plasma torch nozzles, an electric current source for formation of a plasma arc of a plasma torch and a switch of spectrum-forming elements connected to a current source and spectrum-forming elements with the possibility Turning spektroobrazuyuschih elements in the electrical circuit of the plasma arc individually or simultaneously. 2. The device according to claim 1, characterized in that it comprises a polarity switch connected to a current source, spectrum-forming elements and a plasma torch electrode, said switch being configured to turn on spectrum-forming elements so that these elements can be anodes or cathodes of a plasma arc or alternate polarity. 3. The device according to claim 1, characterized in that the plasma torch electrode contains spectrum-forming components. 4. The device according to claim 1, characterized in that the plasma-forming and stabilizing gases differ in composition.

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