Novel high-frequency electrosurgical equipment

Abstract

The utility model discloses novel high-frequency electrosurgical equipment which is composed of a mains supply, a transformer isolation circuit, a temperature protection circuit, a push-pull amplification circuit, a transformer booster circuit, a transformer step-down circuit, a single-chip microcomputer oscillation generation circuit, a drive circuit, a current feedback circuit, a power control circuit, an electrode tool bit and a man-machine interaction circuit. Electromagnetic isolation is realized through the multi-stage transformer, so that potential safety hazards caused by electric leakage in the use process can be avoided, and the stability of high-frequency high-voltage current output can be effectively ensured; meanwhile, the current feedback circuit and the power control circuit are used for collecting the working current of the equipment, the single-chip microcomputer oscillation generation circuit is dynamically adjusted according to the working current so as to ensure the stability of the output power of the equipment, and the temperature protection circuit is used for collecting the working temperature in the equipment and the stability of the working temperature of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a novel high-frequency electrosurgical device. Background Art

[0002] When a high-frequency high-voltage current passes through human tissues, due to the extremely short time of each oscillating electrical pulse, it is very difficult for ions to cause migration. Only vibration and friction occur in viscous body fluids to generate a thermal effect. The high-frequency electrosurgical device (high-frequency electrocautery instrument) is made by utilizing this thermal effect of high-frequency current passing through the body, and is a medical device applied to medical fields such as dermatology, cosmetic plastic surgery, and surgery. Since the high-frequency electrosurgical device usually uses a needle-shaped electrode tip, its effective area is very small, while the current density in the tissue under the electrode is very large. Therefore, once the electromagnetic isolation is improper, it is easy to cause dangers such as electric shock or burns. Content of the Utility Model

[0003] The problem to be solved by the utility model is that the existing high-frequency electrosurgical device may cause dangers such as electric shock or burns due to improper electromagnetic isolation, and provides a novel high-frequency electrosurgical device.

[0004] To solve the above problems, the utility model is realized through the following technical solutions:

[0005] A novel high-frequency electrosurgical device is composed of a mains power supply, a transformer isolation circuit, a temperature protection circuit, a push-pull amplification circuit, a transformer step-up circuit, a transformer step-down circuit, a single-chip microcomputer oscillation generation circuit, a drive circuit, a current feedback circuit, a power control circuit, an electrode tip, and a human-computer interaction circuit; the output end of the mains power supply is connected to the input ends of the transformer isolation circuit and the transformer step-down circuit; the output end of the transformer isolation circuit is connected to the input end of the push-pull amplification circuit via the temperature protection circuit, the output end of the push-pull amplification circuit is connected to the input end of the transformer step-up circuit, and the output end of the transformer step-up circuit is connected to the electrode tip; the output end of the transformer step-down circuit is connected to the power supply end of the single-chip microcomputer oscillation generation circuit, the output end of the single-chip microcomputer oscillation generation circuit is connected to the input end of the drive circuit, and the output end of the drive circuit is connected to the drive end of the push-pull amplification circuit; the temperature sampling end of the temperature protection circuit is connected to the temperature signal end of the single-chip microcomputer oscillation generation circuit; the input end of the current feedback circuit is connected to the current sampling end of the push-pull amplification circuit, the output end of the current feedback circuit is connected to the input end of the power control circuit, and the output end of the power control circuit is connected to the power signal end of the single-chip microcomputer oscillation generation circuit; the human-computer interaction circuit is connected to the control end of the single-chip microcomputer oscillation generation circuit.

[0006] In the above solution, the human-computer interaction circuit includes a foot switch and a power adjustment circuit; the output end of the foot switch is connected to a control end of the single-chip microcomputer oscillation generation circuit, and the output end of the power adjustment circuit is connected to another control end of the single-chip microcomputer oscillation generation circuit.

[0007] In the above solution, the power adjustment circuit includes an adjustment knob and a potentiometer; the adjustment knob is connected to the control end of the potentiometer, and the output end of the potentiometer is connected to the control end of the single-chip microcomputer oscillation generation circuit.

[0008] Compared with the prior art, the present utility model has the following characteristics:

[0009] 1. Electromagnetic isolation is achieved through multiple transformers (transformer isolation circuit, transformer step-down circuit, and transformer step-up circuit). This can not only avoid potential safety hazards caused by electric leakage during use but also effectively ensure the stability of the high-frequency high-voltage current output.

[0010] 2. The working current of the device is collected by the current feedback circuit and the power control circuit, and based on this, the single-chip microcomputer oscillation generation circuit is dynamically adjusted to ensure the stability of the device output power; at the same time, the working temperature inside the device is collected by the temperature protection circuit and fed back to the single-chip microcomputer oscillation generation circuit to keep the working temperature of the device stable.

[0011] 3. The traditional method of using two potentiometers to achieve power adjustment is changed to using one potentiometer to achieve power adjustment, making the power adjustment simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a principle block diagram of a new type of high-frequency electrosurgical device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the following further describes the present utility model in detail with reference to specific examples and the accompanying drawings.

[0014] See Figure 1, a new type of high-frequency electrosurgical device consists of a mains power supply, a transformer isolation circuit, a temperature protection circuit, a push-pull amplifier circuit, a transformer step-up circuit, a transformer step-down circuit, a single-chip microcomputer oscillation generation circuit, a drive circuit, a current feedback circuit, a power control circuit, an electrode tip, and a human-machine interaction circuit. The output terminal of the mains power supply is connected to the input terminals of the transformer isolation circuit and the transformer step-down circuit. The output terminal of the transformer isolation circuit is connected to the input terminal of the push-pull amplifier circuit via the temperature protection circuit, and the output terminal of the push-pull amplifier circuit is connected to the input terminal of the transformer step-up circuit. The output terminal of the transformer step-down circuit is connected to the power supply terminal of the single-chip microcomputer oscillation generation circuit, the output terminal of the single-chip microcomputer oscillation generation circuit is connected to the input terminal of the drive circuit, and the output terminal of the drive circuit is connected to the drive terminal of the push-pull amplifier circuit. The output terminal of the transformer step-up circuit is connected to the electrode tip. The temperature sampling terminal of the temperature protection circuit is connected to the temperature signal terminal of the single-chip microcomputer oscillation generation circuit. The input terminal of the current feedback circuit is connected to the current sampling terminal of the push-pull amplifier circuit, the output terminal of the current feedback circuit is connected to the input terminal of the power control circuit, and the output terminal of the power control circuit is connected to the power signal terminal of the single-chip microcomputer oscillation generation circuit. The human-machine interaction circuit is connected to the control terminal of the single-chip microcomputer oscillation generation circuit.

[0015] The utility model realizes effective electromagnetic isolation through multiple transformers, namely, a transformer isolation circuit, a transformer step-down circuit, and a transformer step-up circuit. Since the electrical insulation between the input side and the output side of the transformer is complete, it can isolate the input and output circuits. At the same time, the iron core of the transformer has the characteristic of large high-frequency loss, which can suppress high-frequency clutter from entering the control circuit. Therefore, it can effectively avoid potential safety hazards caused by electric leakage during use and effectively ensure the stability of high-frequency current output. In the utility model, the transformer isolation circuit is realized by an isolation transformer, the transformer step-down circuit is realized by a step-down transformer, and the transformer step-up circuit is realized by a step-up transformer.

[0016] The temperature protection circuit is mainly composed of a temperature sensor. The temperature protection circuit is connected in series between the transformer isolation circuit and the push-pull amplifier circuit to better collect the working temperature inside the device. When the temperature it collects exceeds the threshold, the single-chip microcomputer oscillation generation circuit will send a signal to the drive circuit to stop outputting high-frequency current to the electrode tip.

[0017] The human-computer interaction circuit includes a foot switch and a power adjustment circuit. The output end of the foot switch is connected to a control end of the single-chip microcomputer oscillation generation circuit, and the output end of the power adjustment circuit is connected to another control end of the single-chip microcomputer oscillation generation circuit. For traditional similar devices, two potentiometers are placed separately to achieve power adjustment. However, the power adjustment circuit of the present utility model mainly uses an adjustment knob and a potentiometer to achieve power adjustment. The adjustment knob is connected to the control end of the potentiometer, and the output end of the potentiometer is connected to the control end of the single-chip microcomputer oscillation generation circuit. The two potentiometers are integrated on one potentiometer in a certain proportion, making it more convenient for users to operate.

[0018] During use, after setting the operating frequency of the device through the power adjustment circuit, step on the foot switch to start the device. During the operation of the device, the transformer isolation circuit isolates the mains power and sends it to the push-pull amplification circuit and the transformer boost circuit. At the same time, the single-chip microcomputer oscillation generation circuit sends out oscillation pulse signals to the drive circuit, and through the drive circuit, drives the push-pull amplification circuit and the transformer boost circuit to amplify the current and voltage of the isolated mains power to obtain high-frequency high-voltage current, which acts on the affected area of the patient through the electrode tip. During this process, the temperature protection circuit collects the operating temperature between the transformer isolation circuit and the push-pull amplification circuit. If the collected temperature exceeds the threshold, the single-chip microcomputer oscillation generation circuit will send a signal to the drive circuit to stop outputting high-frequency high-voltage current to the electrode tip to ensure the stability of the device operating temperature. At the same time, the current feedback circuit collects the operating current of the push-pull amplification circuit and sends it into the power control circuit, and the power control circuit dynamically adjusts the single-chip microcomputer oscillation generation circuit accordingly to ensure the stability of the device output power.

[0019] It should be noted that although the embodiments described above of the present utility model are illustrative, they are not limitations of the present utility model. Therefore, the present utility model is not limited to the above specific embodiments. Without departing from the principle of the present utility model, any other embodiments obtained by those skilled in the art under the inspiration of the present utility model are deemed to be within the protection scope of the present utility model.

Claims

1. A new type of high-frequency electrosurgical device, characterized in that, It is composed of a mains power supply, a transformer isolation circuit, a temperature protection circuit, a push-pull amplification circuit, a transformer step-up circuit, a transformer step-down circuit, a single-chip microcomputer oscillation generation circuit, a drive circuit, a current feedback circuit, a power control circuit, an electrode tip, and a human-computer interaction circuit; The output end of the mains power supply is connected to the input ends of the transformer isolation circuit and the transformer step-down circuit; the output end of the transformer isolation circuit is connected to the input end of the push-pull amplification circuit via the temperature protection circuit, the output end of the push-pull amplification circuit is connected to the input end of the transformer step-up circuit, and the output end of the transformer step-up circuit is connected to the electrode tip; the output end of the transformer step-down circuit is connected to the power supply end of the single-chip microcomputer oscillation generation circuit, the output end of the single-chip microcomputer oscillation generation circuit is connected to the input end of the drive circuit, and the output end of the drive circuit is connected to the drive end of the push-pull amplification circuit; The temperature sampling end of the temperature protection circuit is connected to the temperature signal end of the single-chip microcomputer oscillation generation circuit; the input end of the current feedback circuit is connected to the current sampling end of the push-pull amplification circuit, the output end of the current feedback circuit is connected to the input end of the power control circuit, and the output end of the power control circuit is connected to the power signal end of the single-chip microcomputer oscillation generation circuit; the human-computer interaction circuit is connected to the control end of the single-chip microcomputer oscillation generation circuit.

2. A novel high-frequency electrosurgical device according to claim 1, characterized in that, The human-computer interaction circuit includes a foot switch and a power adjustment circuit; the output end of the foot switch is connected to one control end of the single-chip microcomputer oscillation generation circuit, and the output end of the power adjustment circuit is connected to the other control end of the single-chip microcomputer oscillation generation circuit.

3. A novel high-frequency electrosurgical device according to claim 2, characterized in that, The power adjustment circuit includes an adjustment knob and a potentiometer; the adjustment knob is connected to the control end of the potentiometer, and the output end of the potentiometer is connected to the control end of the single-chip microcomputer oscillation generation circuit.

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