ES2320059A1 - Generator device of UHF waves for diathermia - Google Patents

Abstract

Generator device of UHF waves for diathermia.It consists of a power supply (1), an oscillator (2), means of control of the frequency (8), means of control of the power (9), a distributor (3) that applies the signal to a battery of amplification modules (10-13), each one equipped with an independent power supply (14-17), a mixer-collector (22) that picks up the signal of each amplification module (10-13), a connecter (23) designed to extract part of the signal to visualize the output power, means of visualisation (24), with a micro-controller and a dipole as means of output (25) which radiates a signal of 433.9 MHz with a pure AM-FM modulated carrier without harmonics included within the authorised margin of ICM bands.An integrated and compact system is obtained, needing no maintenance, offering a constant power with a superior performance compared to conventional valves devices.

Description

Improvements introduced in the invention patent No. P 200000024 / X, for: "UHF wave generator device for diathermy".

The present invention patent application consists in accordance with its statement in "Improvements introduced in the invention patent No. 200000024 / X, by UHF wave generating device for diathermy", whose new construction, conformation and design characteristics, complies with projected with safety and effectiveness
maximum.

More specifically, the invention relates to a device designed for therapeutic purposes based on generation of waves in UHF, and that allows to increase irrigation effectively blood at the local level, even in internal areas of the body, so that the patient only experiences a feeling of heat in the treatment area by this therapy.

In the current state of the art relating to this industrial sector, is known by the same owner the Invention Patent No. 200000024 / X "Generating device for UHF waves for diathermy "which consists as indicated by your first claim in power amplification means which comprise at least one amplifier module of radio frequency equipped with an independent power supply, said power amplification means receiving the signal of an oscillator where it is amplified and sent to the media exit.

Other background of the recommended invention and which can be considered as the State of the Art are:

- EP Invention Patent No. 543,152 "Device to stimulate the functional state of an object biological "consisting of a UHF frequency generator that  Assigns to a modulation device. It is connected with the output of a UHF frequency generator, and a device of antenna used to emit a high electromagnetic signal frequency.

- EP Invention Patent No. 519,415 "Microwave apparatus for clinical hyperthermia in endogenous thermotherapy "which consists of a generator electromagnetic radio frequency energy, an applicator that covers an antenna for energy management electromagnetic, a skin temperature sensor equipped with isolation, and a personal computer to fix control and process the data

The invention advocated unlike the State of the known technique, in which it is not contemplated, offers a integrated and compact system that improves the performance of existing devices in the background, and does not need maintenance, offering constant power with performance superior and, whose output means are constituted by a dipole intended to radiate the signal to the patient, plus a display Digital system information.

The improvements introduced in the device initial generator, they materialize in a generator device transistorized high frequency waves, intended for performing diathermy therapies (local heat) in treatments of physiotherapy Said device is constituted by a source switched (8) AC / DC 220V / 28V.

The device of the invention also includes a frequency generator formed by an oscillator, controlled by voltage (V.C.O.) and a type synthesizer (PLL) that is responsible for keep it exactly at the programmed frequency (433.9 MHz), taking as a frequency a crystal of high stability that the guarantees.

When working directly on the frequency fundamental, the spectral purity is optimal (absence of subharmonics and undesirable signals). Subsequently there are successive amplifier stages with their corresponding filters to raise the signal up to the power 5 W needed to pilot the stage of power.

The power stage is formed by a amplifier powered with 28V DC, in its output stage delivery 200 W maximum signal. Subsequently the signal passes through a sensor where a part of it is extracted to visualize the power output, and then goes through a coupler that protects the power amplifier of stationary signals, these are derived to a 50 H resistive load, along with a sensor.

These power and output signals are controlled by an 8-bit microcontroller, and is intended to control the power supply, connection and disconnection, as well such as the control of the power and the operating time of the same.

Other details and features of the invention will be revealed in the course of the description given below, in which reference is made to Drawings that are attached to this report, in which illustrative but not limiting title, a preferred embodiment of the invention.

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Follow a numerical relationship of the parts of the recommended device shown in the figures:

(one)

Oscillator.

(2)

Oscillator control means.

(3)

Stabilizer power.

(4)

Display (power control means).

(5)

Keyboard.

(6)

Microcontroller

(7)

Preamplifier

(8)

Power source.

(9)

Power amplifier.

(10)

Direct sensor

(eleven)

Coupler.

(12)

50 H. load sensor

(13)

Dipole

(14)

Power control means.

(fifteen)

Wave generator device.

Figure 1 is a block diagram in the which is the main ones of the improved device (fifteen).

The UHF wave generator device for improved diathermy (15), as can be seen in the figure
nº 1, presents a transistorized high frequency wave generator circuit destined for the performance of diathermy therapies, powered by a power source (8) that works in collaboration with the corresponding power stabilizer (3), which is connected with the wave generator circuit, and the power source (8) to the power amplifier (9).

The generator circuit in turn comprises a oscillator (1), controlled by means (2) and means of power control (4) controlled by voltage (V.C.O.), and with a type synthesizer (PLL) that is responsible for keeping it fixed in the programmed frequency

Subsequently, there are some stages pre-amplifiers (7) with their corresponding harmonic filters, to raise the signal up to 5 W necessary for pilot the power stage, or power amplifier (9) see figure nº 1. The power stage (9) is formed by a amplifier powered with 28V DC at its output stage (9) delivers 200W of maximum signal power.

The signal then passes through a sensor (10),  where a part of the signal is extracted to visualize the power of output, and then goes through a coupler (11) that protects the power amplifier (9) of stationary signals, these are referred to a resistive load (12) of 50H. Who works in collaboration with the corresponding sensor.

The output power display is controlled by an 8-bit microcontroller (6). Saying microcontroller (6) is intended for supply control electrical, the connection and disconnection of the equipment, as well as the control of the power and the operating time of the same. He microcontroller (6) is located on the top of the equipment, in which a display or display and a keyboard are available (5), as can be seen in figure 1.

Suitably described the present invention in correspondence with the attached figure, it is easy to understand that may be introduced therein, any modifications of detail deemed convenient, as long as it is not altered the essence of the invention that is summarized in the following claims.

Claims (7)

1. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy of which comprise a power supply, an oscillator, control means, power amplification means, and output means of the signal characterized in that the power amplification means (9) comprise at least one radiofrequency amplifier module (9a) provided with a power source (8) receiving said power amplification means (9) the signal from an oscillator (1) where it is amplified and sent to the output means (13). 2. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy according to the first claim, characterized in that the UHF wave generating device for diathermy (15), comprises a power supply ( 8), an oscillator (1), frequency control means (2), power control means (14), a coupler (11) intended to extract a part of the signal to display the output power, means of display (4) with a microcontroller (6) and output means (13). 3. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy according to the preceding claims characterized in that the output means (13) are constituted by a dipole intended to radiate the signal to the patient. 4. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy according to the first claim characterized in that the output means (13) are designed to radiate a signal to the patient in the range of between 433.050 and 434.790 MHz frequency. 5. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy according to the first claim characterized in that the output means (13) are designed to radiate a signal to the 433.9 MHz patient. 6. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy according to the first claim characterized in that the frequency control means (2) comprise a frequency controller to enable the programming of different output levels in AM or FM frequency, and in that the power control means (14) allow to program different power output levels according to the total time of the therapy. 7. Improvements introduced in the invention patent No. 200000024 / x, by UHF wave generating device for diathermy according to the sixth claim characterized in that it comprises measures for detecting user movement during therapy, means for detecting device stoppage, and operating time control means.