Radio frequency generating and output switching control circuit for multi-channel radio frequency temperature-controlled coagulator

Abstract

The application discloses a radio frequency generating and output switching control circuit for a multi-path radio frequency temperature control thermal condenser, comprising a direct current power supply network, characterized in that the direct current power supply network is connected with a radio frequency module through wires, the radio frequency module is connected with a first radio frequency gear control circuit and a second radio frequency gear control circuit through wires, the output end of the radio frequency module is connected with a radio frequency voltage and current detection mechanism through wires, and the radio frequency module comprises a first MOS tube switch, a transformer, a relay, a frequency selection network and a second MOS tube switch. The control circuit is provided with all output settings on only one single radio frequency module through the overall structure of the equipment, which can not only reduce the volume of the radio frequency temperature control thermal condenser circuit, but also meet the requirement of quickly switching the output power gear in the multi-path radio frequency output, thereby reducing the cost of circuit design and being worth promoting and using.

Description

Technical Field

[0001] This invention relates to the field of power technology, and more specifically to a radio frequency generation and output switching control circuit for a multi-channel radio frequency temperature-controlled condenser. Background Technology

[0002] Radiofrequency thermocoagulation devices typically use one electrode and a neutral electrode connected to the patient. The electrode is inserted into the lesion area, while the neutral electrode rests on the patient's skin surface. When radiofrequency current flows through the electrode, patient tissue, and neutral electrode to form a circuit, it generates a thermal effect on the surrounding tissue, causing dehydration and thermocoagulation. Currently available radiofrequency thermocoagulation devices often have limited thermocoagulation channels, requiring multi-point or sequential thermocoagulation, which prolongs the procedure time. While some multi-channel thermocoagulation devices increase the number of internal radiofrequency modules to achieve multi-channel output, this increases circuit design costs. Therefore, we propose a radiofrequency generation and output switching control circuit for multi-channel radiofrequency thermocoagulation devices. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a radio frequency generation and output switching control circuit for a multi-channel radio frequency temperature-controlled condenser, as detailed below:

[0004] A radio frequency generation and output switching control circuit for a multi-channel radio frequency temperature-controlled condenser, comprising a radio frequency module, characterized in that,

[0005] The radio frequency module is connected to the DC power supply network, the first radio frequency level control circuit, and the second radio frequency level control circuit via wires; the output terminal of the radio frequency module is connected to the radio frequency voltage and current detection mechanism via wires.

[0006] The radio frequency module includes a first MOSFET switch, a transformer, a relay, a frequency selection network, and a second MOSFET switch.

[0007] Preferably, the DC power supply network is connected to the first MOSFET switch via a wire.

[0008] The first MOSFET switch is connected to the transformer via a wire.

[0009] The transformer is connected to the relay via a wire.

[0010] The relay is connected to the frequency selection network via wires.

[0011] The output terminal of the frequency selection network is an output port.

[0012] The first radio frequency level control circuit is connected to the first MOSFET switch via a wire.

[0013] The second radio frequency level control circuit is connected to the relay via a wire.

[0014] The transformer is connected to a second MOSFET switch via a wire, and the input terminal of the second MOSFET switch is connected to an RF output control signal. Preferably, the DC power supply network outputs both 36V and 24V DC power.

[0015] Preferably, the first and second RF level control circuits adjust the number of turns of the secondary coil of the transformer on the RF module by controlling the conduction channel of the fast relay on the RF module, so as to change the RF output power.

[0016] Preferably, the frequency-selective network includes a frequency-selective filter.

[0017] Preferably, the frequency-selective filter is a π-type frequency-selective network composed of inductors and capacitors.

[0018] Preferably, the filter in the frequency selection network is a π-type frequency selection network composed of inductors and capacitors.

[0019] Preferably, the radio frequency module can output radio frequency power of 20W, 70W or 100W.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the radio frequency generation and output switching control circuit for multi-channel radio frequency temperature-controlled condenser, through the overall structure of the device, all output settings are performed on a single radio frequency module. This setting can reduce the size of the radio frequency temperature-controlled condenser circuit and meet the requirement of rapid time-division switching of output power levels for multi-channel radio frequency output, greatly reducing the cost of circuit design. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the invention;

[0022] Figure 2 This is a schematic diagram of the radio frequency module of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-2This invention relates to a radio frequency (RF) generation and output switching control circuit for a multi-channel RF temperature-controlled condenser, comprising a DC power supply network with selectable outputs of 36V and 24V DC power. The DC power supply network is connected to the RF module via wires. The RF module is connected to a first RF level control circuit and a second RF level control circuit via wires. The output of the RF module is connected to an RF voltage and current detection mechanism and an RF voltage and current acquisition circuit via wires, used to detect the RF output power. The RF module includes a first MOSFET switch, a transformer, a relay, a frequency selection network, and a second MOSFET switch. The DC power supply network is connected to the first MOSFET switch via wires. RF input voltage switching can be performed using a fast relay. The first MOSFET switch is connected to the transformer via wires. The transformer is connected to the relay via wires. The relay is connected to the frequency selection network via wires. The frequency selection filter network on the RF module is used to filter the required RF output frequency value. The RF output voltage and current values ​​are acquired and monitored by the RF voltage and current detection current. The filter in the frequency selection network is a π-type frequency selection network composed of inductors and capacitors. The output of the frequency selection network is the output port. The first RF level control circuit is connected to the first MOSFET switch via a wire, and the second RF level control circuit is connected to the relay via a wire. The transformer is connected to the second MOSFET switch via a wire, and the input of the second MOSFET switch is connected to the RF output control signal. The RF level control circuit adjusts the number of turns of the secondary coil of the transformer on the RF module by controlling the conduction channel of the fast relay on the RF module to change the RF output power. The RF module can output 20W, 70W, and 100W of RF energy. The RF output control circuit controls the current RF output level by adjusting the control word. According to the actual required output level, the output power level switching circuit switches the DC voltage and output power level required by the RF output module to obtain the ideal output value. The MOSFET switch circuit on the RF module is used for voltage switching. The transformer on it uses a multi-winding method to set different RF outputs, and the RF output switching is performed by a fast relay. There is a frequency selection filter after the relay to make the RF output frequency value meet the output frequency value required by the RF condenser.

[0025] The device offers three different power output values: 20W, 70W, and 100W. The 20W and 70W outputs are achieved with an input voltage of 24V. At 20W output, the reed relay switches to the low-turns coil of the transformer, while at 70W output, it switches to the high-turns coil. The 100W RF output is achieved with an input voltage of 36V and the relay switched to the high-turns coil. These multiple power options and higher power outputs can meet the energy requirements of a single RF function or multiple RF channels operating simultaneously.

[0026] In its specific operation, the invention first selects the input voltage through a first-level control circuit and a first MOSFET switch. After selecting the input voltage, the second MOSFET switch is controlled and adjusted according to the RF output control signal to adjust the output level. Under different input voltages, the relays on the RF module are switched through the second-level control circuit to achieve the maximum output power limit under different states, namely 20W / 70W / 100W output power.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radio frequency generation and output switching control circuit for a multi-channel radio frequency temperature-controlled condenser, comprising a radio frequency module, characterized in that, The radio frequency module is connected to the DC power supply network, the first radio frequency level control circuit, and the second radio frequency level control circuit via wires; the output terminal of the radio frequency module is connected to the radio frequency voltage and current detection mechanism via wires. The radio frequency module includes a first MOSFET switch, a transformer, a relay, a frequency selection network, and a second MOSFET switch. The first radio frequency level control circuit switches the input voltage by controlling the first MOSFET switch of the radio frequency module, and the second radio frequency level control circuit adjusts the number of turns of the secondary coil of the transformer on the radio frequency module by controlling the conduction channel of the fast relay on the radio frequency module, so as to change the radio frequency output power. The DC power supply network is connected to the first MOSFET switch via a wire. The first MOSFET switch is connected to the transformer via a wire. The transformer is connected to the relay via a wire. The relay is connected to the frequency selection network via wires. The output terminal of the frequency selection network is an output port. The first radio frequency level control circuit is connected to the first MOSFET switch via a wire. The second radio frequency level control circuit is connected to the relay via a wire. The transformer is connected to a second MOSFET switch via a wire, and the input terminal of the second MOSFET switch is connected to an RF output control signal.

2. The control circuit according to claim 1, characterized in that: The DC power supply network outputs two types of DC power: 36V and 24V.

3. The control circuit according to claim 1, characterized in that: The frequency-selective network includes a frequency-selective filter.

4. The control circuit according to claim 3, characterized in that: The frequency-selective filter is a π-type frequency-selective network composed of inductors and capacitors.

5. The control circuit according to claim 1, characterized in that: The radio frequency module can output radio frequency power of 20W, 70W or 100W.

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