阅读说明：本技术 用于电和磁组织刺激的设备 (Device for electrical and magnetic tissue stimulation ) 是由 弗朗西斯科·贾维尔·韦拉斯科·瓦尔克 于 2018-11-17 设计创作，主要内容包括：本发明对应于一种电和磁组织刺激设备,包括：多源分配电路；去耦输出级电路,其连接到多源分配电路和控制单元；以及控制单元,其连接到多源分配电路和去耦输出级电路,其中控制单元生成PE和Out输出以对组织进行电和磁刺激。本发明还具有多源分配电路,其包括连接到源输出选择器的控制单元,电压调节电路连接到电流限制器,电流限制器连接到电容器、电容器组和源极输出选择器；其中控制单元通过输出控制信号总线控制源输出选择器,源输出选择器连接或断开来自电容器组的一个或多个电容器。(The invention corresponds to an electrical and magnetic tissue stimulation device comprising: a multi-source distribution circuit; a decoupled output stage circuit connected to the multi-source distribution circuit and the control unit; and a control unit connected to the multi-source dispensing circuit and the decoupled output stage circuit, wherein the control unit generates PE and Out outputs to electrically and magnetically stimulate tissue. The invention also has a multi-source distribution circuit comprising a control unit connected to the source output selector, a voltage regulation circuit connected to a current limiter, the current limiter connected to the capacitor, the capacitor bank and the source output selector; wherein the control unit controls the source output selector through the output control signal bus, the source output selector connecting or disconnecting one or more capacitors from the capacitor bank.)

1. An electrical and magnetic tissue stimulation apparatus comprising:

-a multi-source distribution circuit (3);

-a decoupled output stage circuit (4) connected to the multi-source distribution circuit (3) and to the control unit (1); and

-said control unit (1) connected to said multi-source distribution circuit (3) and to said decoupled output stage circuit (4);

wherein the control unit (1) generates the PE (12) output and the Out (13) output to electrically and magnetically stimulate tissue.

2. The apparatus of claim 1, wherein the decoupled output stage circuit (4) is connected to a transducer.

3. The device according to claim 1, wherein the decoupled output stage circuit (4) and the control unit (1) are connected to an ADC (5).

4. The apparatus according to claim 3, characterized in that the multi-source distribution circuit (3) is double.

5. The apparatus according to claim 1, characterized in that the multi-source distribution circuit (3) comprises:

-a control unit (1) connected to the controlled switching circuit (16) and to the source output selector (20);

-the controlled switching circuit (16) connected to a voltage regulator circuit (18) and to an impedance (17);

-said impedance (17) connected to said voltage regulator circuit (18) and to said controlled switching circuit (16);

-said voltage regulator circuit (18) connected to a current limiter (19); and

-the current limiter (19) connected to a capacitor (21), a capacitor bank (33) and the source output selector (20);

wherein the control unit (1) controls the controlled switching circuit (16) by means of a source control signal (6) and the source output selector (20) by means of an output control signal bus (15), the source output selector (20) connecting or disconnecting one or more capacitors from the capacitor bank (33).

6. The apparatus of claim 5, wherein the multi-source distribution circuit (3) comprises:

-a second controlled switching circuit (34) connected to a second voltage regulator circuit (36) and to a second impedance (35);

-the second impedance (35) connected to the second voltage regulator circuit (36) and the second controlled switching circuit (34);

-said second voltage regulator circuit (36) connected to a second current limiter (37); and

-said second current limiter (37) connected to a second capacitor (38), a second capacitor bank (39) and said source output selector (42);

wherein the control unit (1) controls the opening and closing of the second controlled switch circuit (34) by the source control signal (6) and controls the second source output selector (42) by the output control signal (15).

7. The apparatus of claim 6, wherein the multi-source distribution circuit (3) comprises:

-a third source output selector (63) connected to the first current limiter (19) and the first voltage regulator (18); and

-a fourth source output selector (64) connected to said second current limiter (37) and to said second voltage regulator (36);

the third source output selector (63) and the fourth source output selector (64) are connected to the control unit (1).

8. Apparatus according to claim 1, wherein the multi-source distribution circuit (3) comprises:

-a first controlled switching circuit (16) connected to a high source control signal (7), a first high protection impedance (57), a second high protection impedance (58), a positive voltage regulator circuit (18), and a positive current limiter circuit (19) connected to an output of the first controlled switching circuit (16);

-the positive current limiter circuit (19) connected to a first capacitor (21);

-said first capacitor (21) connected to a first source output selector (20) and to a first capacitor bank (33);

-a second controlled switching circuit (34) connected to a low source control signal (8), a first low protection impedance (59), a second low protection impedance (60), a negative voltage regulator circuit (18), and a negative current limiter circuit (18) connected to an output of the second controlled switching circuit (34);

-the positive current limiter circuit (37) connected to a second capacitor (38); and

-said second capacitor (38) connected to a second source output selector (42) and to a second capacitor bank (39).

9. The apparatus of claim 5 or claim 6 or claim 7 or claim 8, wherein a second source output selector is connected to the capacitor bank at an end to which the source output selector is not connected.

10. The apparatus of claim 1, wherein the decoupling output stage circuit (4) comprises an amplification stage (22) connected to an optical decoupling stage circuit (23).

11. The device according to claim 3, wherein the control unit (1) is connected to an I/O interface (13).

12. A device according to claim 3, wherein the control unit (1) is connected to a signal generator (27) and the signal generator (27) is connected to the decoupled output stage circuit (4).

13. The apparatus according to claim 12, characterized in that the multi-source distribution circuit (3) is double.

14. The device according to claim 3 or 13, wherein the control unit (1) is connected to an output controller (30), the decoupled output stage circuit (4) being connected to the output controller (30); the output controller (30) is connected to an actuator interface (31) that generates a PE '(43) signal and an Out' (44) signal.

15. A multi-source distribution circuit comprising:

-a control unit (1) connected to the source output selector (20);

-a voltage regulator circuit (18) connected to a current limiter (19);

-the current limiter (19) connected to a capacitor (21), a capacitor bank (33) and the source output selector (20);

wherein the control unit (1) controls the source output selector (20) via an output control signal bus (15), the source output selector (20) connecting or disconnecting one or more capacitors from the capacitor bank (33).

16. Multi-source distribution circuit according to claim 15, wherein the calculation unit (1) is connected to a controlled switching circuit (16), the controlled switching circuit (16) being connected to the voltage regulator circuit (18) and to an impedance (17), the impedance (17) being connected to the voltage regulator circuit (18) and to the controlled switching circuit (16), wherein the control unit (1) controls the controlled switching circuit (16) by means of a source control signal (6).

17. Multi-source distribution circuit according to claim 16, wherein the calculation unit (1) is connected to a second controlled switching circuit (34), the second controlled switching circuit (34) being connected to a second voltage regulator circuit (36) and a second impedance (35);

-the second impedance (35) is connected to the second voltage regulator circuit (36) and the second controlled switching circuit (34);

-said second voltage regulator circuit (36) is connected to a second current limiter (37);

-said second current limiter (37) is connected to a second capacitor (38), a second capacitor bank (39) and said source output selector (42);

wherein the control unit (1) controls the opening and closing of the second controlled switch circuit (34) by the source control signal (6) and controls the second source output selector (42) by the output control signal (15).

18. Multi-source distribution circuit according to claim 17, wherein the calculation unit (1) is connected to a third source output selector (63), the third source output selector (63) being connected to the first current limiter (19) and to the first voltage regulator (18); and a fourth source output selector (64) is connected to the second current limiter (37) and the second voltage regulator (36).

19. The apparatus of claim 15 or claim 16 or claim 17 or claim 18, wherein a second source output selector is connected to the capacitor bank at an end to which the source output selector is not connected.

Technical Field

The present invention relates to an electrical and magnetic tissue stimulation device. The apparatus includes a multi-source distribution circuit. Electrodes for electrical stimulation are connected, as well as transducers for magnetic stimulation or different types of stimulation (e.g. peltier elements for cold stimulation, heat generators, vibration motors, coils for inductive stimulation or combinations thereof).

Background

To date, many devices for surgery and therapy have been used in connection with wound healing, disease treatment, cell stimulation, osteogenesis, dielectrophoresis, transcutaneous electrical nerve stimulation, and generation of bioactive frequencies, which are frequencies having biological activity in the human body, thus bringing health, chemotherapy, and the like benefits. The application of various types of stimuli and/or drugs aids the body's natural healing function.

Existing electrical stimulation devices, magnetic stimulation devices, capacitive stimulation devices, inductive stimulation devices, thermal stimulation devices or vibratory stimulation devices or combinations thereof comprise a stimulation unit coupled for at least one transducer. The transducer is adapted to apply stimulation therapy to the tissue of the user and the stimulation unit provides a given number of pulses, which are applied at a determined frequency, amplitude and pulse width.

With respect to the stimulus generator, the power supply is required to adapt to different settings, stimulation treatment intensity, and other physical, electrical, magnetic, thermal, motion, capacitive, inductive characteristics or combinations thereof defined by the impedance of the tissue to be stimulated, for the correct electrical, magnetic, capacitive, inductive, or vibrational stimulation or combinations thereof, where the frequency, amplitude and pulse width of the pulse train are varied.

Disclosure of Invention

The present invention relates to an electrical and magnetic tissue stimulation device comprising: a multi-source distribution circuit (3); a decoupled output stage circuit (4) connected to the multi-source distribution circuit (3) and to a control unit; the control unit (1) is connected to the multi-source dispensing circuit (3) and the decoupled output stage circuit (4), wherein the control unit (1) generates a PE (12) output and an Out (13) output for electrical and magnetic stimulation of tissue.

Drawings

Fig. 1 shows an inventive diagram comprising a multi-source distribution circuit (3), the multi-source distribution circuit (3) being connected to an external source (2), a control unit (1) and a decoupled output stage circuit (4).

Fig. 2 shows an inventive diagram in which an analog-to-digital converter [ ADC ] (5) is connected to a decoupled output stage circuit (4) enabling feedback to the control unit (1).

Fig. 3 shows an inventive diagram, wherein in an embodiment of the invention the external source (2) is a dual source.

Fig. 4 shows a diagram of a multi-source distribution circuit (3) in an embodiment of the invention, the multi-source distribution circuit (3) comprising a control unit (1) connected to a controlled switching circuit (16) and a source output selector (20). The controlled switching circuit (16) is connected to a voltage regulator circuit (18), the voltage regulator circuit (18) being connected to a current limiter (19).

Fig. 5 shows a diagram of a multi-source distribution circuit (3) in an embodiment of the invention, where the external source (2) is a dual source, i.e. it has a positive value and a negative value.

Fig. 6 shows a diagram of a multi-source distribution circuit (3) with dual switching sources in an embodiment of the invention.

Fig. 7 shows a multi-source distribution circuit (3) for the present invention in an embodiment of the present invention.

Fig. 8 shows a diagram of a decoupled output stage circuit (4) in an embodiment of the invention, the decoupled output stage circuit (4) comprising an amplifier stage circuit (22) connected to an optical decoupling stage circuit (23).

Fig. 9 shows a decoupled output stage circuit (4) in an embodiment of the invention, the decoupled output stage circuit (4) comprising an operational amplifier based amplification stage (22), the amplification stage (22) being connected to an optocoupler based optical decoupling stage circuit (23).

Fig. 10 shows a diagram of the invention with an input/output I/O interface (24) connected to the control unit (1), allowing a user to interact with the device.

Fig. 11 shows a diagram of the invention with a signal generator (27) connected to the control unit (1) and the decoupled output stage circuit (4) in an embodiment of the invention.

Fig. 12 shows a diagram of the invention where the external source (2) is a dual source and the signal generator (27) is connected to the control unit (1) and the decoupled output stage circuit (4) in an embodiment of the invention.

Fig. 13 shows a diagram of the present invention in which the control unit (1) is connected to the output control circuit (30), and the output control circuit (30) is connected to the actuator interface (31) in an embodiment of the present invention.

Fig. 14 shows a diagram of the present invention in which the control unit (1) is connected to the output control circuit (30), and the output control circuit (30) is connected to the actuator interface (31) in the embodiment of the present invention. Furthermore, the external source (2) is a dual source.

Fig. 15 shows that the control unit (1) in the embodiment of the present invention is connected to the output control circuit (30) and the signal generator (27); the output control circuit (30) is connected to the diagram of the invention of the actuator interface (31).

Fig. 16 shows a relay circuit including a transistor connected to a relay, in which control is performed using a switch.

Fig. 17 shows a circuit for an external source (2) comprising a rectifying stage connected to a regulating stage.

Detailed Description

Referring to fig. 1, there is an external source (2) that allows DC or AC power. The multi-source distribution circuit (3) is connected to an external source (2) and to the control unit (1). The purpose of the control unit (1) includes the selection of a multi-source distribution (see description below) and the management of stimulation signals (9) targeted to the decoupled output stage circuit (4) by electrical or magnetic stimulation to the point to be stimulated.

The decoupled output stage circuit (4) is in turn connected to the multi-source distribution circuit (3) and to the control unit (1). The control unit (1) sends a stimulation signal (9). The decoupled output stage circuit (4) has two outputs, PE (12) and Out (13). The transducers are connected to the PE (12) output and the Out (13) output. For understanding the present invention, transducers, actuators, motors, electrodes, photocells, inductive actuators, heat generators, resistors, coils are understood to generate magnetic fields by induction, peltier elements, antennas, or combinations thereof.

There are different types of stimulation, such as those consisting of electrical, magnetic, capacitive, inductive, thermal, vibratory, or photoelectric stimulation, or combinations thereof.

In an embodiment of the invention, and referring to fig. 2, there is an external source (2) connected to the multi-source distribution circuit (3). The multi-source distribution circuit (3) is in turn connected to the control unit (1) and the decoupled output stage circuit (4).

The decoupled output stage circuit (4) is connected to an analog to digital converter [ ADC ] (5) via the PE (12) output and the Out (13) output, the analog to digital converter (5) sending digitized signals (9) from the PE (12) and PC (13) channels to the control unit (1). The control unit (1) makes a decision by the variations present in the PE (12) and Out (13) to feed back the different stimulus signals (9) to the decoupled output stage circuit (4). Typically, these variations depend on the variation in electrode loading caused by each of the PE (12) and Out (13) channels.

That is, as tissue is connected at these points, the impedance of the stimulated tissue changes, and changes in current and voltage are monitored by changing its impedance through an analog-to-digital converter [ ADC ] (5). By these changes in current and voltage, changes in the connected impedance are monitored. According to the change of the impedance, the control unit (1) changes the electrical stimulation signal (9).

This form of the decoupled output stage circuit (4) produces different stimuli to the relevant tissue. For the case of fig. 2, the multi-source distribution circuit has a v.out (32) output. The external source (2) of stimulation is positive or negative.

Referring to fig. 3, the external source (2) is a positive/negative source, i.e., a dual source, connected to the multi-source distribution circuit (3). The multi-source distribution circuit (3) is connected to the control unit (1), and the control unit (1) selects and outputs for the multi-source distribution circuit (3). In this way, the multi-source distribution circuit (3) enables a positive v.out (10), a negative v.out (11), i.e. a positive output and a negative output, which in both quadrants, double or take the whole range between positive and negative, has a zero crossing, i.e. a signal is present at zero.

The multi-source dispensing circuit (3) is connected to the decoupled output stage circuit (4) through a positive v.out (10) output, a negative v.out (11) output to stimulate the desired tissue. The decoupled output stage circuit (4) is connected to an analog-to-digital converter [ ADC ] (5) to provide feedback (14) to the control unit (1).

In an embodiment of the invention, and with reference to fig. 4, the multi-source dispensing circuit (3) comprises a controlled switching circuit (16) commanded by the control unit (1) through the source control line (6). The controlled switching circuit (16) has an impedance (17), the impedance (17) helping to prevent a short circuit when the controlled switching circuit (16) is closed.

The controlled switching circuit (16) is connected to the voltage regulator (18) and to an external source (2). When the controlled switching circuit (16) is closed, the voltage regulator circuit (18) is selected by the control unit (1). In this way, the external source (2) is selected as input. A voltage regulator circuit (18) regulates an external source (2) at an input. A current limiter circuit (19) is connected to the output of the voltage regulator circuit (18). The current limiter circuit (19) keeps the current and voltage constant regardless of impedance changes within a certain range, and delivers a signal to the output Cp capacitor (21).

Finally, an output Cp capacitor (21) is connected in parallel to the capacitor bank (33). The capacitor bank (33) allows capacitors of the same capacity or capacitors of different capacities. The capacitors of the capacitor bank (33) are switched by a source output selector (20), the source output selector (20) being commanded by the control unit (1) via an output control line (15). The capacitor bank (33) has a secondary capacitor₁Capacitor to C_nN capacitors of the capacitors connected in parallel, wherein the natural number "n" is greater than zero. The output of the source output selector (20) activates or deactivates each capacitor of the capacitor bank (33).

Referring to fig. 4 and 7, in an embodiment of the invention, the controlled switching circuit (16) comprises:

-an integrated circuit having an optocoupler (16a), the optocoupler (16a) having a first optocoupler (47), a second optocoupler (48), a third optocoupler (49), and a fourth optocoupler (50);

-the anode of the first optical coupler (47) and the anode of the fourth optical coupler (50) are connected;

-the cathode of the second optical coupler (48) and the cathode of the third optical coupler (49) are connected;

-the cathode of the first optocoupler (47) is connected to one terminal of a resistive impedance, the other terminal of which is connected to the high source control signal (7);

-the cathode of the fourth optocoupler (50) is connected to one terminal of a resistive impedance, the other terminal of which is connected to the high source control signal (7);

-the anode of the second optocoupler (48) is connected to one terminal of a resistive impedance, the other terminal of which is connected to the high source control signal (7);

-the anode of the third optocoupler (49) is connected to one terminal of a resistive impedance, the other terminal of which is connected to the high source control signal (7);

-the emitter of the first optocoupler (47) is connected to the collector of the second optocoupler (48);

-the emitter of the third optocoupler (49) is connected to the collector of the fourth optocoupler (50);

-the collector of the first optocoupler (47) is connected to a first high protection impedance (57), the other terminal of the high protection impedance (57) being connected to the collector of the third optocoupler (49);

-the emitter of the second optocoupler (48) is connected to a second high protection impedance (58).

Referring to fig. 4, the controlled switch circuit (16) is selected from the group consisting of a relay circuit, an optocoupler, a controlled selector, a circuit breaker, a transistor, or a combination thereof.

The voltage regulator circuit (18) is selected from the group consisting of an integrated circuit, a zener diode, a circuit with a capacitor, a circuit with a coil, a circuit with a transistor, an electromechanical regulator, or a combination thereof.

The current limiter circuit (19) is selected from the group consisting of an integrated circuit, a circuit with a diode, a circuit with a transistor, a circuit with a capacitor and a resistor, a circuit with a coil and a resistor, or a combination thereof.

In a not shown embodiment of the invention, the capacitor bank (33) is connected at the end not connected to the source output selector (20), i.e. the second source output selector allowing each of the capacitors of the capacitor bank (33) to be connected in series and/or in parallel.

The output control (15) commanded by the control unit (1) switches the capacitors of the capacitor bank (33), which are connected in parallel with the output capacitor Cp (21). An output capacitor Cp (21) is connected to the current limiter circuit (19). An equivalent capacitor between the capacitor bank (33) and the output capacitor Cp (21) is connected to the v.out output (32). When a capacitor in parallel with the output capacitor Cp (21) in the capacitor group (33) is switched, the amount of output load changes.

In an embodiment of the present invention and referring to fig. 5, a multi-source divider circuit (3) is used for the positive source (41) and the negative source (40). In this way, the control unit (1) is connected to the controlled switching circuit (16) through the source control line (6). The controlled switching circuit (16) is connected to an impedance (17), the impedance (17) helping to prevent a short circuit when the controlled switching circuit (16) is closed.

The controlled switching circuit (16) is connected to the voltage regulator (18) and to a positive external source (41). When the controlled switching circuit (16) is closed, the voltage regulator circuit (18) is selected by the control unit (1), in such a way that the external source (41) is selected as input. A voltage regulator circuit (18) regulates an external source (41) selected as an input. A current limiter circuit (19) is connected to the output of the voltage regulator circuit (18). The current limiter circuit (19) keeps the current and voltage constant regardless of impedance changes within a certain range, and delivers a signal to the output Cp capacitor (21).

Finally, an output Cp capacitor (21) is connected in parallel to the capacitor bank (33). The capacitors of the capacitor bank (33) are commutated by a source output selector (20), the source output selector (20) being regulated by the control unit (1) via an output control line (15).

An output control (15) commanded by the control unit (1) switches the capacitors of the capacitor bank (33) in parallel with the output Cp capacitor (21), the output Cp capacitor (21) being connected to the current limiter circuit (19). An equivalent capacitor between the capacitor bank (33) and the output capacitor Cp (21) is connected to the positive v.out (10) output. When at least one capacitor in the capacitor group (33) in parallel with the output Cp capacitor (21) is connected, the amount of the output load changes.

The control unit (1) is then connected to the controlled switching circuit (34) via a source control line (6). The controlled switching circuit (34) is connected to an impedance (35), the impedance (35) helping to prevent a short circuit when the controlled switching circuit (34) is closed. The controlled switching circuit (34) is connected to a voltage regulator (36) and a positive external source (40).

When the controlled switching circuit (34) is closed, the voltage regulator circuit (36) is selected by the control unit (1), in such a way that the negative source (40) is selected as input. A voltage regulator circuit (36) regulates a negative external source (40) selected as an input. A current limiter circuit (37) is connected to the output of the voltage regulator circuit (36). A current limiter circuit (37) keeps the current and voltage constant regardless of impedance changes over a range and delivers a signal to an output Cp capacitor (38).

Finally, an output Cp capacitor (38) is connected in parallel to the capacitor bank (39). The capacitors of the capacitor bank (39) are switched by a source output selector (42), the source output selector (42) being commanded by the control unit (1) via an output control line (15).

The capacitor bank (39) has a secondary capacitor₁Capacitor to C_nN capacitors connected in parallel of the capacitors, wherein the natural number "n" is greater than zero, the output of the second source output selector (42) activates or deactivates each capacitor of the capacitor bank (39).

In a not shown embodiment of the invention, the capacitor bank (39) is connected at the end not connected to the source output selector (42), i.e. the source output selector (42) is the second source output selector allowing each of the capacitors of the capacitor bank (39) to be connected in series and/or in parallel.

An output control (15) commanded by the control unit (1) switches the capacitors of the capacitor bank (39) in parallel with the output Cp capacitor (38), the output Cp capacitor (38) being connected to the current limiter circuit (37). An equivalent capacitor between the capacitor bank (39) and the output capacitor Cp (38) is connected to the negative v.out (11) output. When at least one capacitor in the capacitor group (39) in parallel with the output Cp capacitor (38) is connected, the amount of the output load changes.

In an embodiment of the present invention and referring to fig. 6, a multi-source divider circuit (3) is used for both the positive source (41) and the negative source (40).

In this way, the control unit (1) is connected to the controlled switching circuit (16) through the source control line (6). The controlled switching circuit (16) has an impedance (17), the impedance (17) helping to prevent a short circuit when the controlled switching circuit (16) is closed. The controlled switching circuit (16) is connected to the voltage regulator (18) and to an external positive source (41). When the controlled switching circuit (16) is closed, the voltage regulator circuit (18) is selected by the control unit (1), in such a way that the external source (41) is selected as input. A voltage regulator circuit (18) regulates an external source (41) selected as an input.

At the output of the voltage regulator circuit (18), a source output selector (20) is connected, the function of the source output selector (20) being to convert a positive external source (41) into a switched source, which allows greater stability of the current and voltage. A current limiter circuit (19) is connected to the output of the source output selector (20). The current limiter circuit (19) keeps the current and voltage constant regardless of impedance changes within a certain range, and delivers a signal to the output Cp capacitor (21).

Finally, an output Cp capacitor (21) is connected in parallel to the capacitor bank (33). The capacitors of the capacitor bank (33) are switched by a source output selector (20), the source output selector (20) being commanded by the control unit (1) via an output control line (15). An output control (15) commanded by the control unit (1) connects at least one capacitor in parallel with the capacitor bank (33) with an output Cp capacitor (21), the output Cp capacitor (21) being connected to a current limiter circuit (19). An equivalent capacitor between the capacitor bank (33) and the output capacitor Cp (21) is connected to the positive v.out (10) output. When at least one capacitor in the capacitor group (33) in parallel with the output Cp capacitor (21) is connected, the amount of the output load changes.

The control unit (1) is then connected to the controlled switching circuit (34) via a source control line (6). The controlled switching circuit (34) is connected to an impedance (35), the impedance (35) helping to prevent a short circuit when the controlled switching circuit (34) is closed. The controlled switching circuit (34) is connected to a voltage regulator (36) and a positive external source (40). When the controlled switching circuit (34) is closed, the voltage regulator circuit (36) is selected by the control unit (1). In this way, the negative source (40) is selected as input. A voltage regulator circuit (36) regulates an external source (40) selected as an input.

At the output of the voltage regulator circuit (18), a source output selector (42) is connected, the function of the source output selector (42) being to convert the negative external source (40) into a switched source, which allows greater stability of the current and voltage. At the output of the source output selector (42). A current limiter circuit (37) is connected to the output of the source output selector (36). A current limiter circuit (37) keeps the current and voltage constant regardless of impedance changes over a range and delivers a signal to an output Cp capacitor (38).

Finally, an output Cp capacitor (38) is connected in parallel to the capacitor bank (39). The capacitors of the capacitor bank (39) are switched by a source output selector (42), the source output selector (42) being commanded by the control unit (1) via an output control line (15).

An output control (15) commanded by the control unit (1) connects at least one capacitor in parallel with the capacitor bank (39) with an output Cp capacitor (38), the output Cp capacitor (38) being connected to a current limiter circuit (37). An equivalent capacitor between the capacitor bank (39) and the output capacitor Cp (38) is connected to the output negative v.out (11). When at least one capacitor in the capacitor group (39) connected in parallel with the output Cp capacitor (38) is switched, the amount of output load changes.

In an embodiment of the present invention, and referring to fig. 7, there is a circuit for a multi-source distribution circuit (3). The circuit has, for example, an external source (2), a positive external source (41) and a negative external source (40), wherein the external source (2) may be 5 volts.

The controlled switching circuit (16) comprises four optocouplers connected in parallel in pairs to switch the positive external source (41). The external source (2) is connected to a resistive impedance (55). A resistive impedance (55) is connected to the inputs of the two optocouplers, specifically optocouplers (47) and (50). At the input of the other pair of optical couplers, in particular (48) and (49), the high source control signal (7) is connected. Each of the optocouplers is suitably protected by a current limiting impedance.

When the control unit (1) sends a control signal through the high source control line (7), the pair of optical couplers starts to be conducted; when the signal changes, the other pair starts conducting. Each of the optocouplers has an input to an impedance that has the function of limiting the LED diode current of each optocoupler.

To prevent a short circuit from occurring when the control unit (1) sends a signal (9) over the high source control line (7) to the non-selected positive external source (41), two resistive impedances (57) and (58) are connected.

At the output of the controlled switching circuit (16), a voltage regulator circuit (18) is connected. The voltage regulator circuit (18) includes two zener diodes. A Zener diode (18a) is connected in parallel with the optocoupler (47) and in series with the optocoupler (48), and a Zener diode (18b) is connected in parallel with the optocoupler (50) and in series with the optocoupler (49). A current limiter circuit (19) is connected to the output of the voltage regulator circuit (18). Each of the optocouplers is suitably protected by a current limiting impedance.

The current limiter circuit (19) comprises two MOSFET transistors. The MOSFET transistor has its own protection diode. The p-channel MOSFET transistor (19a) is connected to a positive external source (41) through a source pin. A transistor (19a) is connected to the positive v.out (10) output and the output Cp capacitor (21) through a drain pin. At a gate pin (19a) of the transistor, photo-couplers (47) and (48) are connected at the same time.

The n-channel MOSFET transistor (19b) is connected to the circuit reference (i.e., GND) through its drain and source pins. In turn, the gate pin of transistor (19b) is connected to both optocouplers (49) and (50), and in turn a decoupling capacitor (C4) is connected to the source pin, allowing decoupling of the input source and output impedance. The transistors (19a) and (19b) keep the current constant despite the impedance change. A current limiter circuit (19) is connected to the output Cp capacitor (21).

The output Cp capacitor (21) is connected in parallel with the capacitor group (33). Furthermore, a decoupling capacitor is connected to the output Cp capacitor (21). For connecting at least one capacitor from a capacitor bank (33), the control unit (1) sends a signal (9) and switches the source output selector (20). A source output selector (20) connects at least one capacitor from a capacitor bank (33) in parallel with an output Cp capacitor (21), the output Cp capacitor (21) in turn being connected to a positive v.out (10) output.

The parallel connection between the output Cp capacitor (21) and at least one capacitor from the capacitor bank (33) allows the output load to be varied.

The controlled switching circuit (34) includes four optocouplers connected in parallel in pairs to switch the negative external source (40). A 5 volt external source (2) is connected to the resistive impedance (56). A resistive impedance (56) is connected to the inputs of two optocouplers, in particular optocouplers (51) and (54). At the input of the other pair of optical couplers, in particular optical couplers (52) and (53), a low source control signal (8) is connected.

When the control unit (1) sends a control signal through the low-source control line (8), the pair of optical couplers starts to be conducted; when the signal changes, the other pair of optical couplers starts to conduct. Each of the optocouplers has an input to an impedance that has the function of limiting the LED diode current of each optocoupler.

To prevent a short circuit from occurring when the control unit (1) sends a signal (9) through the low-source control line (8) to the non-selected negative external source (40), two resistive impedances (59) and (60) are connected.

At the output of the controlled switching circuit (34), a voltage regulator circuit (36) is connected. The voltage regulator circuit (36) includes two zener diodes. The Zener diode (36b) is connected in parallel with the photocoupler (51) and in series with the photocoupler (52), and the Zener diode (36a) is connected in parallel with the photocoupler (54) and in series with the photocoupler (53). A current limiter circuit (37) is connected to the output of the voltage regulator circuit (36).

The current limiter circuit (37) comprises two MOSFET transistors. The MOSFET transistor has its own protection diode. An n-channel MOSFET transistor (37b) is connected to a negative external source (40) through a source terminal. A transistor (37b) is connected to the negative v.out (11) output and the output Cp capacitor (38) through a drain pin. Optocouplers (53) and (54) are connected at the gate pin (37b) of the transistor at the same time.

The p-channel MOSFET transistor (37a) is connected to the circuit reference (i.e., GND) through its drain and source pins. Then, the transistor gate pin (37a) is connected to the photo couplers (51) and (52) at the same time. The transistors (37a) and (37b) keep the current constant despite the impedance change. A current limiter circuit (37) is connected to the output Cp capacitor (38).

The output Cp capacitor (38) is connected in parallel with the capacitor bank (42). For connecting at least one capacitor from a capacitor bank (42), the control unit (1) sends a signal (9) and switches the source output selector (39). A source output selector (39) connects at least one capacitor from the capacitor bank (42) in parallel with an output Cp capacitor (38), the output Cp capacitor (38) in turn being connected to a negative v.out (11) output.

The parallel connection between the output Cp capacitor (38) and at least one capacitor from the capacitor bank (39) allows the output load to be varied.

Referring to fig. 8, the signal (9) is commanded by the control unit (1), typically the signal (9) is a pulse train, where the amplitude, frequency or pulse step size (i.e. the width of the pulse) is varied. Different results are obtained by varying these characteristics of the signal (9).

The signal (9) comes from the control unit (1), the control unit (1) being a microcontroller, a computer or a signal generator. The pulsed signal has low power and should therefore be conditioned by the amplifier stage circuit (22) in order to deliver it with a larger load.

The signal (9) provided by the control unit (1) enters the amplifier stage circuit (22). For safety reasons, the output of the amplification stage (22) does not connect the transducer directly to the desired tissue. Therefore, a decoupling circuit is required. The decoupling circuit allows capacitive decoupling, decoupling by means of a transformer, or, as shown in fig. 8, in an embodiment of the invention is an optical decoupling stage circuit (23).

The output of the amplifier stage circuit (22), the positive v.out (10) output and the negative v.out (11) output of the source divider circuit are connected from the multi-source divider circuit (3) to the optical decoupling stage circuit (23). At the outputs of the optical decoupling circuit (23), PE (12) and Out (13), an impedance (i.e. the desired tissue) is connected through the transducer. The PE (12) output and the Out (13) output are the outputs of the decoupled output stage circuit (4).

When the pulse signal (9) enters the optical decoupling stage circuit (23), it switches to the frequency of the pulse signal (9) sent by the control unit (1) and has an amplitude sent by the control unit (1).

In an embodiment of the invention and referring to fig. 9, the signal (9) commanded by the control unit (1) is connected to the amplifier stage circuit (22). The amplifier stage circuit (22) comprises an instrumentation amplifier which in turn consists of two operational amplifiers, wherein the first operational amplifier acts as an inverting amplifier and the second operational amplifier has the function of decoupling impedance.

The output of the amplifier stage circuit (22) is connected to an optical decoupling stage circuit (23). The optical decoupling stage circuit (23) comprises a pair of optical couplers for a positive input source (41), which are arranged with their respective resistive impedances at the output of the amplification stage circuit (22).

One of these optocouplers, in particular the optocoupler (23c), protects the circuit section of the negative external source (40) when the pulse signal (9) switches the positive external source (41). Further, a second optocoupler integrated circuit (34a) is switched to connect a positive external source (41) to a circuit segment having a zener diode, a resistive impedance, and a MOSFET transistor in order to regulate the output signal. The output signal is sent through the PE (12) output and the Out (13) output.

The optical decoupling stage circuit (23) also has a pair of optical couplers for the negative input source (40), which are arranged with their respective resistive impedances at the output of the amplifier stage circuit (22).

One of these optocouplers, in particular the optocoupler (23d), protects the circuit section of the negative external source (41) when the pulse signal (9) switches the negative external source (40). Further, the first optocoupler integrated circuit (16a) is switched to connect the negative external source (40) to a circuit segment having a zener diode, a resistive impedance, and a MOSFET transistor in order to regulate the output signal. The output signal is sent through the PE (12) output and the Out (13) output.

The PE (12) output and the Out (13) output are connected at the output of an optical decoupling stage (23), where the transducers are directly connected.

The transducer receives a positive v.out (10) signal and a negative v.out (11) signal modulated by a signal amplified by an amplifier stage circuit (22). Depending on the type of transducer, the requirements of the input source vary, so it is necessary to vary the load connected to the multi-source distribution circuit (3).

Refer to fig. 10; the control unit (1) has a user interface or I/O input and output interface (24), the user interface or I/O input and output interface (24) being a computing device with a display screen, LCD, monitor to display feedback (14) delivered by an analog-to-digital converter [ ADC ] (5) to the control unit (1) in order to observe the behavior of impedances connected at PE (12) and Out (13) points of the decoupled output stage circuit (4).

The user interface or I/O input and output interface (24) allows a professional user to send commands to the control unit (1) to change the characteristics of the signal (9) that the control unit (1) has to send to the decoupled output stage circuit (4).

The control unit (1) is in turn connected to a multi-source distribution circuit (3) to send commands for which the input source is to be used. The divider circuit is connected to a double positive/negative external source (2). The outputs of the multi-source distribution circuit (3) -positive v.out (10) and negative v.out (11) -are connected to the decoupled output stage circuit (4). The outputs of the de-coupled output stage circuit (4) -PE (12) and Out (13) -are connected to an analog-to-digital converter [ ADC ] (5), the analog-to-digital converter (5) sending a feedback signal (14) to the control unit (1).

Referring to fig. 11, the multi-source distribution circuit (3) is connected to the positive or negative external source (2) and to the control unit (1) through the source control line (6). The control unit (1) is connected to a signal generator (27) via a signal control line (26). The signal generator (27) sends the signal (9) to the decoupled output stage circuit (4). A decoupling output stage circuit (4) receives a signal (9) sent by a signal generator (27) and a V.Out (32) signal sent by a multi-source distribution circuit (3).

The outputs of the decoupled output stage circuit (4) -PE (12) and Out (13) -are connected to an analog-to-digital converter [ ADC ] (5), the analog-to-digital converter (5) sending a feedback signal (14) to the control unit (1) for monitoring the behavior of the impedances connected to PE (12) and Out (13).

Referring to fig. 12, the multi-source distribution circuit (3) is connected to the dual positive/negative external source (2) and the control unit (1) through the high source control line (7) and the low source control line (8). The control unit (1) is connected to a signal generator (27) via a signal control line (26). The signal generator (27) sends a signal (9) to the decoupling output stage circuit (4), the decoupling output stage circuit (4) in turn receiving the positive v.out (10) and negative v.out (11) signals sent by the multi-source distribution circuit (3).

The outputs of the de-coupled output stage circuit (4) -PE (12) and Out (13) -are connected to an analog to digital converter [ ADC ] (5), the analog to digital converter (5) sending a feedback signal (14) to the control unit (1) for monitoring the behaviour of the impedances connected to the PE (12) and Out (13) channels.

Referring to fig. 13, the multi-source distribution circuit (3) is connected to the positive or negative external source (2) and to the control unit (1) through the source control line (6). The control unit (1) is connected to a signal generator (27). The signal generator (27) sends two or more signals (9) to two or more decoupled output stage circuits (4).

A signal (9) sent by a signal generator (27) and a V.Out signal (32) sent by a multi-source distribution circuit (3) enter a decoupled output stage circuit (4). Each output stage circuit is connected to an analogue to digital converter [ ADC ] (5) via the PE (12) output and the Out (13) output, the analogue to digital converter (5) sending a feedback signal (14) to the control unit (1) for monitoring.

All PE (12) outputs and Out (13) outputs of each decoupled output stage circuit (4) are connected to an output control circuit (30). The output control circuit (30) receives a signal commanded by the control unit (1) that allows selection of which transducer to stimulate. An actuator interface (31) is connected at an output of the output control circuit (30). Two or more transducers are connected to the actuator interface (31) through a PE '(43) output and an Out' (44) output.

Referring to fig. 14, the multi-source distribution circuit (3) is connected to the dual positive/negative external source (2) and the control unit (1) through the high source control line (7) and the low source control line (8), allowing switching between the positive source and the negative source. The control unit (1) sends two or more signals (9) to two or more decoupled output stage circuits (4).

A signal (9) sent by a control unit (1), a positive V.Out signal (10) and a negative V.Out signal (11) sent by a multi-source distribution circuit (3) enter a decoupling output stage circuit (4). Each output stage circuit is connected to an analogue to digital converter [ ADC ] (5) via the PE (12) output and the Out (13) output, the analogue to digital converter (5) sending a feedback signal (14) to the control unit (1) for monitoring.

All PE (12) outputs and Out (13) outputs of each decoupled output stage circuit (4) are connected to an output control circuit (30). The output control circuit (30) receives a signal commanded by the control unit (1) that allows selection of which transducer to stimulate. An actuator interface (31) is connected at an output of the output control circuit (30). Two or more transducers are connected to the actuator interface (31) through a PE '(43) output and an Out' (44) output.

Referring to fig. 15, the multi-source distribution circuit (3) is connected to the dual positive/negative external source (2) and the control unit (1) through the high source control line (7) and the low source control line (8), allowing switching between the positive source and the negative source. The control unit (1) is connected to a signal generator (27). The signal generator (27) transmits two or more signals.

A signal (9) sent by a signal generator (27), a positive V.out signal (10) and a negative V.out signal (11) sent by a multi-source distribution circuit (3) enter a decoupling output stage circuit (4). Each output stage circuit is connected to an analogue to digital converter [ ADC ] (5) via the PE (12) output and the Out (13) output, the analogue to digital converter (5) enabling feedback (14) to the control unit (1) for monitoring.

All PE (12) outputs and Out (13) outputs of each decoupled output stage circuit (4) are connected to an output control circuit (30). The output control circuit (30) receives a signal commanded by the control unit (1) that allows selection of which transducer to stimulate. An actuator interface (31) is connected at an output of the output control circuit (30). Two or more transducers are connected to the actuator interface (31) through a PE '(43) output and an Out' (44) output.

Referring to fig. 16, an example of a relay circuit is shown. The relay circuit includes a pair of switches that allow the selection transistor to start conducting or not. When the transistor starts to conduct, the relay coil is allowed to be connected to GND, thereby changing the state of the relay.

Referring to fig. 17, a circuit for a dual source of 12 volts and-12 volts is shown. The circuit includes a 12 volt and-12 volt rectifier, filter and regulator. The segments of the rectifier circuit include two diodes, a set of resistors and a capacitor. The rectification stage is followed by two stages, which depend on the voltage; if positive, it passes through a 12 volt voltage regulator. If the rectified voltage is negative, it passes through a-12 volt voltage regulator.

In a not shown embodiment of the invention, the multi-source distribution circuit comprises a control unit (1) connected to a source output selector (20). The voltage regulator circuit (18) is connected to a current limiter (19). The current limiter (19) is connected to the capacitor (21), the capacitor bank (33) and the source output selector (20), wherein the control unit (1) controls the source output selector (20) via the output control signal bus (15), the source output selector (20) connecting or disconnecting one or more capacitors from the capacitor bank (33).

Optionally, in the multi-source distribution circuit, the calculation unit (1) is connected to a controlled switching circuit (16). The controlled switching circuit (16) is connected to the voltage regulator circuit (18) and to the impedance (17), the impedance (17) being connected to the voltage regulator circuit (18) and to the controlled switching circuit (16). Wherein the control unit (1) controls the controlled switching circuit (16) by means of a source control signal (6).

Alternatively, in the multi-source distribution circuit, the calculation unit (1) is connected to a second controlled switching circuit (34), the second controlled switching circuit (34) being connected to a second voltage regulator circuit (36) and a second impedance (35); a second impedance (35) is connected to a second voltage regulator circuit (36) and to a second controlled switching circuit (34), the second voltage regulator circuit (36) being connected to a second current limiter (37), the second current limiter (37) being connected to a second capacitor (38), a second capacitor bank (39) and a source output selector (42);

wherein the control unit (1) controls the opening and closing of the second controlled switching circuit (34) by means of the source control signal (6) and controls the second source output selector (42) by means of the output control signal (15).

Furthermore, in an embodiment of the present invention (e.g., a multi-source distribution circuit), the calculation unit (1) is connected to a third source output selector (63), and the third source output selector (63) is connected to the first current limiter (19) and the first voltage regulator (18). A fourth source output selector (64) is connected to the second current limiter (37) and the second voltage regulator (36).

It will be understood that the invention is not limited to the embodiments described and illustrated and that a person skilled in the art will appreciate that many variations and modifications may be made without departing from the spirit of the invention, which is limited only by the appended claims.