Multi-pole radio frequency device and control method thereof, radio frequency therapeutic instrument

Abstract

The application discloses a multi-pole radio frequency device and a control method and a radio frequency therapeutic instrument thereof. The device comprises a radio frequency power supply, a return electrode, a therapeutic electrode, a controller, a first switch switching circuit and / or a second switch switching circuit. The controller controls the third input end and the fourth input end of the second switch switching circuit to be respectively switched to connect the third output end and the fourth output end. In the monopole mode, the controller controls the first output end and the second output end of the first switch switching circuit to be respectively electrically connected with the therapeutic electrode and the return electrode. In the bipolar mode, the controller controls the first output end and the second output end to be respectively connected with at least one electrode piece. The technical scheme of the application aims to make the radio frequency electrode output uniform radio frequency energy, so that the radio frequency energy can produce better thermal effects in the parallel and vertical directions of the relative action layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a multi-pole radio frequency device, a control method thereof and a radio frequency therapeutic instrument. BACKGROUND

[0002] The radio frequency therapeutic instrument generates radio frequency energy on human tissues through two different electrode pads, the radio frequency energy stimulates subcutaneous tissues, the water molecules with polarity in the tissues move at high speed, and heat effect is generated to make the protein of the diseased tissue lose activity, and finally through the body's rejection, the diseased tissue is shed, and then new healthy tissue is generated, so that the treatment purpose is achieved. However, the existing radio frequency therapeutic instrument has a fixed electrode design of the existing treatment handle, the treatment range corresponding to the single electrode mode is limited, and the heat generated by the two interfaces of the radio frequency power supply when outputting the radio frequency energy is not the same. The existence of such heat difference will affect the uniformity of the radio frequency energy output from the two ends of the radio frequency power supply, thereby causing the radio frequency energy output between the treatment electrode and the return electrode on the treatment handle to have a difference and the treatment range to be limited, the operation convenience is not strong, and the treatment effect of the radio frequency therapeutic instrument is affected. SUMMARY

[0003] The main purpose of the present application is to provide a multi-pole radio frequency device, which aims to make the radio frequency electrode can output uniform radio frequency energy, so that the radio frequency energy generates better heat effect in the parallel and vertical directions of the relative action layer.

[0004] To achieve the above purpose, the present application provides a multi-pole radio frequency device, which comprises:

[0005] A radio frequency power supply having a first interface and a second interface with opposite electrode polarity;

[0006] A return electrode;

[0007] A treatment electrode comprising a plurality of electrode pads;

[0008] A first switch switching circuit having a first input end and a second input end electrically connected to the first interface and the second interface respectively, a first output end of the first switch switching circuit being electrically connected to the treatment electrode, a second output end of the first switch switching circuit being switchably electrically connected to the return electrode or part of the electrode pads, the first output end and the second output end being respectively connected to the first input end and the second input end;

[0009] And / or a second switch switching circuit, a third input end of the second switch switching circuit being connected to the first interface, a fourth input end of the second switch switching circuit being connected to the second interface, the second switch switching circuit having a third output end and a fourth output end;

[0010] The controller, when the multi-pole radio frequency device comprises the first switch switching circuit, further has a single-pole mode and a double-pole mode, in the single-pole mode, the controller controls the first output end and the second output end to be electrically connected with the treatment electrode and the return electrode respectively; in the double-pole mode, the controller controls the first output end and the second output end to be connected with at least one of the electrode pieces respectively.

[0011] When the multi-pole radio frequency device comprises the second switch switching circuit, the controller controls the third input end and the fourth input end to be switched to be connected with the third output end and the fourth output end respectively.

[0012] Optionally, when the multi-pole radio frequency device comprises the second switch switching circuit, the controller is configured to control the second switch switching circuit to work to control the connection between the third input end and the fourth input end and the third output end and the fourth output end to be switched at least once.

[0013] Optionally, the controller is configured to control the second switch switching circuit to work to control the connection between the third input end and the fourth input end and the third output end and the fourth output end to be switched at a first preset period.

[0014] When the multi-pole radio frequency device comprises the first switch switching circuit, optionally, the controller is configured to control the first switch switching circuit to work to control the first output end and the second output end to be switched between the single-pole mode and the double-pole mode at least once.

[0015] Optionally, the controller is configured to control the first switch switching circuit to work to control the first output end and the second output end to be switched between the single-pole mode and the double-pole mode at a second preset period.

[0016] Optionally, the first switch switching circuit and the second switch switching circuit can be the same switch switching circuit, and the switching between the single-pole mode and the double-pole mode and the switching with the first interface and the second interface respectively are realized by the controller.

[0017] Optionally, the abutting area of the return electrode is greater than the abutting area of the treatment electrode.

[0018] The application further provides a multi-pole radio frequency device control method applied to the multi-pole radio frequency device, and the multi-pole radio frequency device control method comprises the following steps of:

[0019] judging a user input signal;

[0020] If the signal is monopolar mode, enter monopolar mode, control the first output and the second output to be electrically connected with the treatment electrode and the return electrode respectively, so that the polarity of the plurality of electrode pieces of the treatment electrode is the same;

[0021] If the signal is bipolar mode, enter bipolar mode, control the first output and the second output to be connected with at least one of the electrode pieces, so that the polarity of at least one of the electrode pieces in the treatment electrode is opposite to that of the remaining electrode pieces;

[0022] If the signal is combined mode, control the first output and the second output to switch between the monopolar mode and the bipolar mode at least once.

[0023] Optionally, the control method of the multipolar radio frequency device further comprises:

[0024] In the bipolar mode or the monopolar mode, control the connection between the third input and the fourth input and the third output and the fourth output to switch at least once.

[0025] Optionally, the control method of the multipolar radio frequency device further comprises:

[0026] In the bipolar mode or the monopolar mode, control the connection between the third input and the fourth input and the third output and the fourth output to switch at a first preset period.

[0027] Optionally, the control method of the multipolar radio frequency device further comprises:

[0028] In the bipolar mode or the monopolar mode, the switching of the third input and the fourth input and the third output and the fourth output is connected, and in a treatment process, the heat generated by connecting the first interface of any one electrode piece in the treatment electrode is W1, the heat generated by connecting the second interface is W2, 0.5≤W1 / W2≤2.0.

[0029] Optionally, the control method of the multipolar radio frequency device further comprises:

[0030] Control the first output and the second output to switch between the monopolar mode and the bipolar mode at a second preset period.

[0031] Optionally, the control method of the multipolar radio frequency device further comprises:

[0032] In the combined mode, in a treatment process, the heat generated in the monopolar mode is W3, and the heat generated in the bipolar mode is W4, 0.5≤W3 / W4≤2.

[0033] Optionally, the control method for the multi-pole radio frequency device further includes:

[0034] Obtain the temperature of the electrode pad of the treatment electrode;

[0035] Determine whether the temperature of the electrode sheet exceeds the preset safe temperature threshold;

[0036] If so, control the radio frequency power supply to stop outputting radio frequency energy;

[0037] If not, control the RF power supply to maintain effective RF energy output.

[0038] The present invention also proposes a radiofrequency therapy device, including the multipolar radiofrequency device as described above.

[0039] In this invention, on one hand, a second switching circuit is provided between the radio frequency power supply and the treatment electrode and return electrode. By controlling the second switching circuit, the connection relationship between the treatment electrode and return electrode and the first and second interfaces of the radio frequency power supply is adjusted, so that the first and second interfaces of the radio frequency power supply can be alternately connected to the third and fourth input terminals of the second switching circuit in the multipolar radio frequency device of this invention. On the other hand, the first switching circuit changes the connection relationship between the treatment electrode and return electrode and the first and second interfaces, so that the multipolar radio frequency device can switch between unipolar and bipolar modes. Thus, the first and second interfaces of the radio frequency power supply can continuously switch between positive and negative electrodes to ensure uniform radio frequency energy output, guaranteeing a good thermal effect in both parallel and vertical directions at the treatment site, achieving a good three-dimensional uniform energy effect. Of course, the second switching circuit and the first switching circuit can coexist, or only one of them can be provided. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of an embodiment of the multi-pole radio frequency device of the present invention;

[0042] Figure 2 for Figure 1 A schematic diagram of the electrode arrangement in one embodiment of a therapeutic electrode;

[0043] Figure 3 forFigure 1 Figure 2 is a schematic diagram of an electrode array of another embodiment of the therapeutic electrode;

[0044] Figure 4 Figure 3 is a schematic diagram of an electrode array of an embodiment of the therapeutic electrode; Figure 1 Figure 4 is a schematic diagram of an electrode array of another embodiment of the therapeutic electrode;

[0045] Figure 5 Figure 5 is a schematic diagram of a structure of another embodiment of the multi-pole radio frequency device;

[0046] Figure 6 Figure 6 is a schematic diagram of a circuit structure of an embodiment of the multi-pole radio frequency device;

[0047] Figure 7 Figure 7 is a schematic diagram of a flow of an embodiment of the control method of the multi-pole radio frequency device;

[0048] Figure 8 Figure 8 is a schematic diagram of a structure of another embodiment of the multi-pole radio frequency device;

[0049] Figure 9 Figure 9 is a schematic diagram of a structure of another embodiment of the multi-pole radio frequency device;

[0050] Figure 10 Figure 10 is a schematic diagram of a structure of another embodiment of the multi-pole radio frequency device;

[0051] Figure 11 Figure 11 is a schematic diagram of a structure of another embodiment of the multi-pole radio frequency device.

[0052] Brief Description of the Drawings:

[0053] Reference Name Reference Name 10 Radio frequency power source 20 Second switch switching circuit 30 First switch switching circuit 40 Treatment electrode 50 Return electrode 60 Controller 100 Treatment handle 110 Electrode pad 120 Grip portion 130 Switch switching button

[0054] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be apparently and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0056] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture is changed, the directionality indications will also be changed accordingly.

[0057] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0058] In the prior art, the radio frequency device generally adopts single pole or double pole, the single pole radio frequency device has a deeper depth of action, and the double pole radio frequency device has a shallower depth of action. On the one hand, the user needs to replace the single pole radio frequency device or the double pole radio frequency device according to different needs during use, resulting in low treatment efficiency and poor treatment efficiency. On the other hand, the return electrode of the single pole radio frequency device needs to be attached to other parts of the body to produce a deep treatment effect. When a single person uses at home, the operation is too troublesome, reducing the user's desire to use. At the same time, during the treatment process, the heat generated by the two output ports of the radio frequency power supply will be different, which is easy to cause the heat difference of the radio frequency energy output from the two ends of the radio frequency power supply. This heat difference will affect the uniform output of the radio frequency energy of the radio frequency power supply, and the non-uniform radio frequency energy will make the treatment effect deviate from the treatment expectation, thereby affecting the treatment effect of the radio frequency therapeutic instrument.

[0059] The present application provides a multi-pole radio frequency device.

[0060] In the embodiments of the present application, please refer to Figures 1 to 9 , the multi-pole radio frequency device comprises:

[0061] The radio frequency power supply 10 has a first interface and a second interface with opposite polarities;

[0062] The return electrode 50;

[0063] The treatment electrode 40 comprises a plurality of electrode pieces 110;

[0064] The first switch switching circuit 30 has a first input end and a second input end electrically connected to the first interface and the second interface respectively. The first output end of the first switch switching circuit 30 is electrically connected to the treatment electrode 40. The second output end of the first switch switching circuit 30 is switchably electrically connected to the return electrode 50 or part of the electrode pieces 110. The first output end and the second output end are respectively connected to the first input end and the second input end.

[0065] and / or, the second switch switching circuit 20, a third input end of the second switch switching circuit 20 is connected with the first interface, a fourth input end of the second switch switching circuit 20 is connected with the second interface, the second switch switching circuit 20 has a third output end and a fourth output end;

[0066] the controller 60, when the multi-pole radio frequency device comprises the first switch switching circuit 30, the controller 60 further has a single-pole mode and a double-pole mode, in the single-pole mode, the controller 60 controls the first output end and the second output end to be electrically connected with the treatment electrode 40 and the return electrode 50 respectively; in the double-pole mode, the controller 60 controls the first output end and the second output end to be connected with at least one electrode sheet 110 respectively;

[0067] when the multi-pole radio frequency device comprises the second switch switching circuit 20, the controller 60 controls the third input end and the fourth input end to be switched to connect the third output end and the fourth output end respectively.

[0068] In the technical scheme of the present application, on one hand, the second switch switching circuit 20 is arranged between the radio frequency power supply 10 and the treatment electrode 40 and the return electrode 50, the connection relationship between the treatment electrode 40 and the return electrode 50 and the first interface and the second interface of the radio frequency power supply 10 is adjusted by controlling the second switch switching circuit 20, so that the first interface and the second interface of the radio frequency power supply 10 can be alternately connected with the third input end and the fourth input end of the second switch switching circuit 20; on the other hand, the first switch switching circuit 30 is used to change the connection relationship between the treatment electrode 40 and the return electrode 50 and the first interface and the second interface, so that the multi-pole radio frequency device can be switched between the single-pole mode and the double-pole mode, thus, the first interface and the second interface of the radio frequency power supply 10 can be continuously switched between the positive electrode and the negative electrode, so as to uniformly output the radio frequency energy, and ensure that better thermal effects are generated in the parallel and vertical directions of the treatment part, so as to realize the effect of three-dimensional uniform energy. Of course, the second switch switching circuit 20 and the first switch switching circuit 30 can exist together, or only one of them is arranged.

[0069] Wherein, through the controller 60, the second switch switching circuit 20 can be controlled to firstly connect the third input end and the third output end, and connect the fourth input end and the fourth output end, and then switch to connect the fourth input end and the third output end, and connect the third input end and the fourth output end, so that when the second switch switching circuit 20 works, the treatment electrode 40 and the return electrode 50 are connected to the first interface or the second interface for an equal time, or are maintained in a similar range, so as to balance the heat of the first interface and the second interface. Alternatively, in the embodiment, when the various input ends and the various output ends in the second switch switching circuit 20 are switched and connected, the controller 60 or the manual mode additionally controls the first switch switching circuit 30 to adjust the connection between the entire electrode sheet 110 or part of the electrode sheet 110 of the treatment electrode 40 and the third output end, and the connection between the return electrode 50 and the fourth output end, so that the treatment electrode 40 and the return electrode 50 carry opposite electrode polarities respectively, thereby forming a multi-pole radio frequency device in a monopolar mode; alternatively, in the embodiment, the controller 60 or the manual mode additionally controls the first switch switching circuit 30 to adjust the connection relationship between the plurality of electrode sheets 110 in the treatment electrode 40 and the first output end and the second output end, so that at least one of the plurality of electrode sheets 110 is connected to the first output end, and the remaining electrode sheets 110 or at least one of the remaining electrode sheets 110 is connected to the second output end, so as to ensure that the electrode polarity of at least one of the electrode sheets 110 in the treatment electrode 40 is opposite to the electrode polarity of at least one of the remaining electrode sheets 110, thereby forming a multi-pole radio frequency device in a bipolar mode. By using the cooperation of the second switch switching circuit 20 and the first switch switching circuit 30, the multi-pole radio frequency device of the present application is switched between the monopolar mode and the bipolar mode, and the connection relationship between the first interface and the second interface output by the radio frequency power supply 10 and the third input end and the fourth input end is continuously switched, so that the radio frequency energy of the multi-pole radio frequency device of the present application is more uniform in output and at the treatment site, so as to ensure the treatment effect.

[0070] It should be noted that the electrode sheet 110 in the technical solution is only arranged on the treatment electrode 40. At the same time, in the combined mode formed by switching between the monopolar mode and the bipolar mode during a treatment process, the total radio frequency energy output in the monopolar mode tends to be equal to the total radio frequency energy output in the bipolar mode. The first input end, the second input end, the third input end, the fourth input end, the first output end, the second output end, the third output end, and the fourth output end can be a multi-branch total end or a single-branch end.

[0071] It can be understood that the controller can control the first switch switching circuit 30 and the second switch switching circuit 20 together, that is, in an embodiment, the first switch switching circuit 30 and the second switch switching circuit 20 can be the same switch switching circuit, and the controller 60 realizes the switching between the unipolar mode and the bipolar mode and the switching with the first interface and the second interface respectively. That is, in the unipolar mode or the bipolar mode or the combined mode, the controller 60 can further control the mutual switching of the connection ports of the switch switching circuit and the treatment electrode 40 and the return electrode 50 to realize that the heat difference at the first interface and the second interface tends to be zero; or the switch switching circuit at the first interface and the second interface only remains the mutual switching, which guarantees that the total radio frequency energy output by the first interface and the second interface of the radio frequency power supply respectively tends to be equal in one treatment process, and guarantees the treatment effect.

[0072] In an embodiment, please refer to Figures 1 to 5 When the multi-pole radio frequency device includes the second switch switching circuit 20, the controller 60 is used to control the second switch switching circuit 20 to work to control the connection between the third input end and the fourth input end and the third output end and the fourth output end to switch at least once. It should be noted that if the positive electrode and the negative electrode remain constant in the connection part of the radio frequency power supply 10, the first interface and the second interface of the radio frequency power supply 10 are easy to produce heat difference. Here, the controller 60 controls the second switch switching circuit 20 to realize the constant switching of the connection between the third input end and the fourth input end and the third output end and the fourth output end respectively, so that the positive electrode and the negative electrode make the heat generated by the radio frequency power supply 10 evenly distributed on the first interface and the second interface, so as to reduce the heat difference of the first interface and the second interface, thereby guaranteeing the uniform output of the radio frequency energy on the radio frequency power supply 10.

[0073] Specifically, in the embodiment, please refer to Figure 1 and Figure 4 The controller 60 is used to control the second switch switching circuit 20 to work to control the connection between the third input end and the fourth input end and the third output end and the fourth output end to switch at a first preset period. In this way, the controller 60 controls the switching frequency of the second switch switching circuit 20 at the first preset period according to the preset algorithm program. In a specific embodiment, the treatment time range of one treatment is set to 20ms-12s, and the controller 60 can control the switching time range of the second switch switching circuit 20 to be set to 0.1ms-2ms, so as to improve the uniform output of the radio frequency energy, thereby guaranteeing the treatment effect. In addition, the controller 60 can also enter the self-defined mode to set the first preset period according to the user's own use habit.

[0074] In an embodiment, please refer to Figures 1 to 5When the multi-pole radio frequency device comprises the first switch switching circuit 30, the controller 60 is configured to control the first switch switching circuit 30 to work so as to control the first output end and the second output end to switch at least once between the monopolar mode and the bipolar mode. In the monopolar mode, the electrode polarity of the electrode pieces 110 on the treatment electrode 40 is the same, for example, all positive, and the electrode polarity of the return electrode 50 is the same, for example, all negative. At this time, the treatment electrode 40 and the return electrode 50 keep opposite electrode polarity under the control of the first switch switching circuit 30, and because the human body parts corresponding to the treatment electrode 40 and the return electrode 50 are far apart, the radio frequency energy output on the electrode pieces 110 of the treatment electrode 40 can act on deep tissues to achieve the treatment purpose in the vertical direction of the treatment part. In the bipolar mode, the electrode polarity of at least one electrode piece 110 on the treatment electrode 40 is opposite to the electrode polarity of the remaining electrode pieces 110, and because there are two electrode pieces 110 with opposite electrode polarity on the treatment electrode 40, it is determined that the radio frequency energy in the bipolar mode has a shorter path in the human body, and the radio frequency energy can only act on the shallow part of the human body to achieve the treatment purpose in the parallel direction of the treatment part. In this way, by controlling the first switch switching circuit 30 through the controller 60, the switching between the monopolar mode and the bipolar mode is realized, so that the radio frequency energy output by the monopolar mode and the bipolar mode is equal in one treatment process, which can guarantee that the multi-pole radio frequency device of the present application can realize the three-dimensional heat effect distribution, thereby improving the treatment effect.

[0075] Specifically, in the present embodiment, please continue to refer to Figure 4, the controller 60 is configured to control the first switch switching circuit 30 to work so as to control the first output end and the second output end to switch at the second preset period in the unipolar mode and the bipolar mode. In this way, the user can select the preset switching period according to the user's own needs, execute the second preset period instruction by using the controller 60, so as to control the working time length and the switching time of the multi-pole radio frequency device in the unipolar mode and the bipolar mode respectively, or the user can enter the self-defined mode, select the working period suitable for the user, and save the self-defined data into the controller 60, so that the controller 60 switches between the unipolar mode and the bipolar mode according to the self-defined data, so that the action area of the electrode sheet 110 can realize the heat effect distribution in the parallel direction and the vertical direction of the to-be-treated area, so as to form a better three-dimensional treatment effect. It should be noted that, no matter whether the period is preset or self-defined, the radio frequency energy output by the unipolar mode and the bipolar mode is equal in one treatment process. In addition, in other embodiments, the unipolar mode and the bipolar mode need to be manually switched during use, or the working time of the unipolar mode or the bipolar mode needs to be changed at any time according to the use condition. In this way, the user can output the switching instruction to the controller 60 by manually operating the switch switching button 130 on the treatment handle 100, and switch between the unipolar mode and the bipolar mode by using the controller 60.

[0076] Without loss of generality, in an embodiment, the controller 60 can be a microprocessor such as a single-chip microcomputer, a DSP, and an FPGA, or can be a special chip for radio frequency treatment instrument, which is not limited here. Those skilled in the art can integrate some hardware circuits and preset algorithm programs in the controller 60, and use the controller 60 to run the algorithm programs to realize the automatic switching between the unipolar mode and the bipolar mode of the multi-pole radio frequency device and the working of the second switch switching circuit 20 according to the application. The user can also select the corresponding radio frequency frequency or the working time of the second switch switching circuit 20 in the unipolar mode or the bipolar mode according to the user's own needs.

[0077] Without loss of generality, please continue to refer to Figures 6 to 9 The plurality of electrode sheets 110 in the treatment electrode 40 can be arranged in an array, or arranged in a line, or distributed in a circle, etc. In the bipolar mode, the electrode polarity of each electrode sheet 110 and the adjacent electrode sheet 110 can be the same or different. For example, the electrode sheets 110 are arranged in a line, and the positive and negative electrodes are arranged alternately, that is, the electrode polarity of the electrode sheets 110 in one line is positive, and the electrode polarity of the electrode sheets 110 in the adjacent line is negative, or the electrode polarity of each electrode sheet 110 and the adjacent electrode sheet 110 is opposite, that is, the electrode sheets 110 in each line and each column are arranged alternately in positive and negative. Of course, this arrangement of the electrode sheets 110 can also be applied to the unipolar mode, so as to enhance the radio frequency energy of the single electrode carried by the electrode sheet 110 of the treatment electrode 40.

[0078] Further, in an embodiment, referring to Figure 1 and Figures 6 to 9 , the abutting area of the return electrode 50 is larger than the abutting area of the treatment electrode 40. It is to be noted that the size relationship of the contact areas between the electrodes and the skin affects the heat effect of the radio frequency energy, and in the two contact areas in the formed radio frequency loop, the heat effect of the radio frequency energy mainly occurs in the area with smaller contact area, and here, the abutting area is the contact area between the electrode sheet 110 or the return electrode 50 and the skin of the treatment site, so that in the monopolar mode, the radio frequency heat effect mainly acts on the treatment site through the treatment electrode 40 to generate, so as to guarantee the treatment effect. Of course, in other embodiments, the abutting area of the return electrode 50 can also be slightly smaller than the abutting area of the electrode sheet 110.

[0079] Specifically, in the present embodiment, referring to Figure 1 and Figures 6 to 9 , the multipolar radio frequency device has a holding portion 120, and the return electrode 50 is arranged on the holding portion 120. Without loss of generality, the multipolar radio frequency device includes a treatment handle 100, and the holding portion 120 is located in the middle of the treatment handle 100, which is generally held by the user's hand when in use, that is, the palm of the user's hand is in communication with the return electrode 50, so that in the monopolar mode, the polarity of the electrode sheet 110 of the treatment electrode 40 is opposite to the polarity of the return electrode 50, and here, the holding portion 120 is equivalent to the return electrode 50, and the radio frequency energy emitted by the electrode sheet 110 can generate a heat effect on the treatment site, thereby achieving a treatment effect, and compared with another loop formed by contacting the return electrode 50 with other parts of the human body, the return electrode 50 arranged on the holding portion 120 improves the convenience of the user using the multipolar radio frequency device, and is suitable for home personal users. Of course, in other embodiments, the return electrode 50 can be arranged on another branch protruding from the treatment handle 100, and when the electrode sheet 110 of the treatment electrode 40 is in contact with the treatment site, the return electrode 50 can also be in contact with the human body to form a loop. Alternatively, in another embodiment, the multipolar radio frequency device is a large treatment instrument device applied in places such as hospitals or beauty institutions, wherein the treatment electrode 40 and the return electrode 50 are respectively connected with a treatment host through a communication structure, and the second switch switching circuit 20 and the first switch switching circuit 30 are arranged at the intersection of the treatment electrode 40 and the return electrode 50.

[0080] In an embodiment, the radio frequency power supply 10 comprises one power supply or a plurality of independent power supplies, which are connected to the second switch switching circuit 20. It should be noted that the power supply can be an external power supply or a rechargeable lithium battery, and the power supply can be a continuous output power supply or a pulse output power supply or a continuous and pulse output power supply; when one power supply is used, the size of the multi-pole radio frequency device can be reduced, and when a plurality of independent power supplies are provided, the plurality of power supplies are respectively connected to the third input end and the fourth input end of the second switch switching circuit 20. Without loss of generality, the radio frequency power supply 10 further comprises a frequency adjuster, which can adjust the radio frequency frequency output by the radio frequency power supply 10, thereby adjusting the treatment level of the multi-pole radio frequency device, to obtain a more effective treatment effect, whether the second switch switching circuit 20 is working or the first switch switching circuit 30 is working.

[0081] The application further provides a control method of a multi-pole radio frequency device, which is applied to the multi-pole radio frequency device as described above, please refer to Figure 5 The control method of the multi-pole radio frequency device comprises:

[0082] judging a user input signal;

[0083] If the signal is a monopolar mode, entering the monopolar mode, controlling the first output end and the second output end to be respectively electrically connected to the treatment electrode 40 and the return electrode 50, so that the polarities of the plurality of electrode pieces 110 of the treatment electrode 40 are the same;

[0084] If the signal is a bipolar mode, entering the bipolar mode, controlling the first output end and the second output end to be respectively connected to at least one electrode piece 110, so that the polarity of at least one electrode piece 110 in the treatment electrode 40 is opposite to the polarity of the remaining electrode pieces 110;

[0085] If the signal is a combined mode, controlling the first output end and the second output end to switch at least once between the monopolar mode and the bipolar mode.

[0086] Wherein, the user judges to use the monopolar mode, the bipolar mode or jointly use the monopolar mode or the bipolar mode according to the position of the part to be treated, and according to the judgment result, the user issues an execution signal of the corresponding result to the controller 60, and the control method of the multi-pole radio frequency device is based on the result of the user's judgment on the depth of the part to be treated relative to the skin.

[0087] In the embodiment, when the treatment site is relatively deep, the user inputs a monopolar mode signal, and the controller 60 controls the first switch switching circuit 30 to switch to the monopolar mode. In the monopolar mode, the first switch switching circuit 30 is controlled by the controller 60 to connect the treatment electrode 40 to the third output terminal and the return electrode 50 to the fourth output terminal, so that the treatment electrode 40 and the return electrode 50 have opposite polarities. Since the treatment electrode 40 and the return electrode 50 form a longer path on the human body, the treatment electrode 40 can generate a thermal effect on the relatively deep treatment site to achieve deep penetration of the radio frequency energy into the skin.

[0088] When the treatment site is relatively shallow, the user inputs a bipolar mode signal, and the controller 60 controls the first switch switching circuit 30 to switch to the bipolar mode. In the bipolar mode, part of the electrode pieces 110 on the treatment electrode 40 are connected to the third output terminal, and the other part of the electrode pieces 110 are connected to the fourth output terminal, so that the electrode pieces 110 on the treatment electrode 40 have opposite polarities. Since the electrode pieces 110 on the treatment electrode 40 form a shorter path on the human body, the electrode pieces 110 with smaller contact areas among the opposite two parts of the electrode pieces 110 can generate a thermal effect on the relatively shallow treatment site.

[0089] When the treatment site is moderately deep, the user inputs a combined mode signal, and the controller 60 controls the first switch switching circuit 30 to switch between the monopolar mode and the bipolar mode at least once. Specifically, if only one mode cannot effectively treat the treatment site, the working mode can be the monopolar mode or the bipolar mode when the multi-pole radio frequency device is initially started. After a period of time, the working mode is switched from the monopolar mode to the bipolar mode, or from the bipolar mode to the monopolar mode. The working mode is switched at least once during the entire treatment stage. Since the action areas in the monopolar mode and the bipolar mode are different, in order to expand the action area and improve the treatment effect, the embodiment adopts the working mode of switching between the monopolar mode and the bipolar mode, so that the treatment site achieves the expected treatment effect in the parallel and vertical directions relative to the skin. It should be noted that in the embodiment, the total radio frequency energy output by the monopolar mode is equal to the total radio frequency energy output by the bipolar mode during the combined mode treatment. That is, the total radio frequency energy output by the monopolar mode is equal to the total radio frequency energy output by the bipolar mode during the working time corresponding to the monopolar mode and the bipolar mode, respectively.

[0090] Optionally, in an embodiment, the connection between the third input and the fourth input and the third output and the fourth output is switched at least once under the bipolar mode or the monopolar mode. It can be understood that under the monopolar mode or the bipolar mode, including the case of only monopolar mode, only bipolar mode, or only combined mode, the second switch switching circuit 20 can make the third input and the fourth input respectively communicate with the third output and the fourth output, or make the third input and the fourth input respectively communicate with the fourth output and the third output, or switch the connection between the third input and the fourth input and the third output and the fourth output at least once based on the control of the controller 60, so as to ensure that the two interface outputs of the radio frequency power supply 10 output relatively uniform radio frequency energy under the monopolar mode or the bipolar mode, and achieve a better treatment effect.

[0091] Further, in an embodiment, the control method of the multi-pole radio frequency device further comprises switching the connection between the third input and the fourth input and the third output and the fourth output at a first preset period under the bipolar mode or the monopolar mode. Specifically, in order to ensure that the heat difference between the first interface and the second interface of the radio frequency power supply 10 can tend to zero, that is, the time when the treatment electrode 40 and the return electrode 50 are connected with the first interface or the second interface respectively is equal, or is maintained within a similar range when the second switch switching circuit 20 is working. In this way, the controller 60 sets the second switch switching circuit 20 to work at a first preset period, and the second switch switching circuit 20 continuously switches the connection between the third input and the fourth input and the third output and the fourth output at a first preset period based on the control of the controller 60 under the monopolar mode or the bipolar mode, so that the first interface and the second interface of the radio frequency power supply 10 can relatively uniformly output radio frequency energy to achieve the expected treatment effect.

[0092] Further, in the present embodiment, in the bipolar mode or the monopolar mode, the third input terminal and the fourth input terminal are switched to communicate with the third output terminal and the fourth output terminal, and in a treatment process, the heat generated by the first interface of any one of the electrode pieces 110 of the treatment electrode 40 is W1, and the heat generated by the second interface is W2, 0.5≤W1 / W2≤2.0. It should be noted that W1 and W2 represent the cumulative heat generated by the first interface and the second interface, respectively, of any one of the electrode pieces 110 of the treatment electrode 40 in a treatment process. It can be understood that, regardless of the monopolar mode or the bipolar mode, W1 and W2 herein represent the product of the time during which the first interface and the second interface, respectively, work and the power corresponding thereto, and more specifically, the radio frequency energy output by the first interface and the second interface, respectively, on the electrode piece 110. That is, the ratio of the radio frequency energy generated by the first interface and the second interface, respectively, on the treatment electrode 40 in a treatment process is in the range of 0.5 to 2.0, and in a specific embodiment, W1 / W2 can be 0.5, 1, or 2.

[0093] In an embodiment, the control method of the multi-polar radio frequency device further includes controlling the first output terminal and the second output terminal to switch at a second preset period in the monopolar mode and the bipolar mode. Based on the user's comprehensive consideration of the depth of the treatment site relative to the skin, the controller 60 is controlled to control the first switch switching circuit 30 to work at a second preset period in a treatment process. Specifically, when the multi-polar radio frequency device of the present application is initially started, it can be in one of the monopolar mode or the bipolar mode, and then switched to the other mode at a second preset period. The working mode in the entire treatment stage is the combined mode, which switches and works at a second preset period, but it is necessary to ensure that the total radio frequency energy output by the monopolar mode in a treatment process is equal to the total radio frequency energy output by the bipolar mode. Since the action areas in the monopolar mode and the bipolar mode are different, the present embodiment adopts the working mode of switching between the monopolar mode and the bipolar mode, so that the treatment site achieves the expected treatment effect in the relative skin parallel and vertical directions. Of course, the user can also adjust and change the actual treatment site according to the actual situation, and use the controller 60 to perform treatment at a self-defined period of the monopolar mode and the bipolar mode, or manually input an instruction to the controller 60 through the switch switching button 130, and the controller 60 switches between the monopolar mode and the bipolar mode.

[0094] Further, in the present embodiment, in the combined mode, the heat generated by the monopolar mode is W3, and the heat generated by the bipolar mode is W4, 0.5≤W3 / W4≤2, during one treatment. It should be noted that W3 and W4 represent the heat generated by the monopolar mode and the bipolar mode respectively during one treatment in the combined mode. It can be understood that in the combined mode, W3 and W4 respectively represent the product of the time and the corresponding power of the monopolar mode and the bipolar mode during one treatment, that is, the heat generated by the monopolar mode for the deep treatment site and the heat generated by the bipolar mode for the shallow treatment site, so that the quantified ratio of the heat effects of the treatment site in the parallel and vertical directions relative to the skin is between 0.5 and 2, and the multi-polar radio frequency device of the present application can generate a three-dimensional uniform heat effect on the treatment site, thereby achieving a better treatment effect. In a specific embodiment, W3 / W4 can be 0.5, 1, or 2.

[0095] In order to better achieve the output energy control of the multi-polar radio frequency device, in an embodiment, the control method of the multi-polar radio frequency device further comprises:

[0096] obtaining the temperature of the electrode sheet 110 of the treatment electrode 40;

[0097] determining whether the temperature of the electrode sheet 110 exceeds the preset safety temperature threshold;

[0098] if yes, controlling the radio frequency power supply 10 to stop the radio frequency energy output;

[0099] if no, controlling the radio frequency power supply 10 to maintain the effective radio frequency energy output.

[0100] In the present embodiment, the temperature sensor can be arranged on the treatment electrode 40 to detect the temperature on any one of the electrode sheets 110. Here, regardless of whether the monopolar mode, the bipolar mode, the combined mode, or the second switch switching circuit works together or separately, as long as the multi-polar radio frequency device of the present application is in operation, the temperature sensor detects the temperature of the electrode sheet 110.

[0101] It should be noted that the effective treatment temperature of the radio frequency therapeutic instrument is between 38°C and 48°C. Within this temperature range, the electrode sheet 110 on the treatment electrode 40 can effectively generate a heat effect on the treatment site, thereby achieving the treatment purpose. In a specific embodiment, according to different gears, the safety temperature threshold can be set to 45°C, 48°C, or 49°C. In this way, according to the temperature detected by the temperature sensor on the electrode sheet 110, and comparing the temperature with the safety temperature threshold, specifically:

[0102] When greater than the safety temperature threshold, the controller 60 controls the RF power source 10 to stop outputting RF energy; when less than or equal to the safety temperature threshold, the controller 60 controls the RF power source 10 to maintain effective energy output.

[0103] The application further provides a radio frequency therapeutic instrument, which comprises a multi-pole radio frequency device, and the specific structure of the multi-pole radio frequency device is referred to the above-mentioned embodiments. Since the radio frequency therapeutic instrument adopts all the technical solutions of the above-mentioned embodiments, it has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and thus will not be repeated here.

[0104] The above-mentioned is only optional embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like within the inventive concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A multi-pole radio frequency device, characterized by, The application relates to a multi-pole radio frequency device, comprising: a radio frequency power supply having a first interface and a second interface with opposite polarities; a return electrode, the multi-pole radio frequency device having a treatment handle and a holding portion, the holding portion being located in the middle of the treatment handle, the return electrode being arranged on the holding portion, the holding portion further being provided with a switch switching button; a treatment electrode comprising a plurality of electrode pieces, the electrode pieces being located at the end of the treatment handle and being used to abut against the skin; a first switch switching circuit having a first input end and a second input end electrically connected to the first interface and the second interface respectively, a first output end of the first switch switching circuit being electrically connected to the treatment electrode, a second output end of the first switch switching circuit being switchably electrically connected to the return electrode or part of the electrode pieces, the first output end and the second output end being in communication with the first input end and the second input end respectively; a second switch switching circuit, a third input end of the second switch switching circuit being connected to the first interface, a fourth input end of the second switch switching circuit being connected to the second interface, the second switch switching circuit having a third output end and a fourth output end, the third output end and the fourth output end being in communication with the third input end and the fourth input end respectively; a controller, when the multi-pole radio frequency device comprises the first switch switching circuit, the controller further having a monopolar mode and a bipolar mode, in the monopolar mode, the controller controls the first output end and the second output end to be electrically connected to the treatment electrode and the return electrode respectively, in the bipolar mode, the controller controls the first output end and the second output end to be in communication with at least one of the electrode pieces, the switch switching button can output a switching instruction to the controller, the controller switches between the monopolar mode and the bipolar mode, in the monopolar mode, the treatment electrode is used to treat deeper skin, in the bipolar mode, the treatment electrode is used to treat shallower skin; when the multi-pole radio frequency device comprises the second switch switching circuit, the controller controls the third input end and the fourth input end to switch to connect the third output end and the fourth output end respectively.

2. The multipole radio frequency device of claim 1, wherein, when the multi-pole radio frequency device comprises the second switch switching circuit, the controller is used to control the second switch switching circuit to work, so as to control the connection between the third input end and the fourth input end and the third output end and the fourth output end to switch at least once.

3. The multipole radio frequency device of claim 2, wherein, the controller is used to control the second switch switching circuit to work, so as to control the connection between the third input end and the fourth input end and the third output end and the fourth output end to switch at a first preset period.

4. The multipole radio frequency device of claim 1, wherein, when the multi-pole radio frequency device comprises the first switch switching circuit, the controller is used to control the first switch switching circuit to work, so as to control the first output end and the second output end to switch between the monopolar mode and the bipolar mode at least once.

5. The multipole radio frequency device of claim 4, wherein, The controller is configured to control the first switch switching circuit to work, so as to control the first output end and the second output end to switch between the unipolar mode and the bipolar mode with a second preset period.

6. The multipole radio frequency device of claim 1, wherein, The first switch switching circuit and the second switch switching circuit can be the same switch switching circuit, and the controller is configured to realize switching between the unipolar mode and the bipolar mode, and switching between the therapy electrode and the return electrode and the first interface and the second interface.

7. The multipole radio frequency device of any of claims 1 to 6, wherein, The contact area of the return electrode is greater than the contact area of the therapy electrode.

8. A control method of a multi-pole radio frequency device, applied to the multi-pole radio frequency device according to any one of claims 1 to 6, characterized in that, The control method of the multipolar radio frequency device comprises: judging a user input signal; if the signal is the unipolar mode, entering the unipolar mode, and controlling the first output end and the second output end to be electrically connected to the therapy electrode and the return electrode respectively, so that the polarities of the plurality of electrode pads of the therapy electrode are the same; if the signal is the bipolar mode, entering the bipolar mode, and controlling the first output end and the second output end to be connected to at least one of the electrode pads respectively, so that the polarity of at least one of the electrode pads of the therapy electrode is opposite to the polarity of the remaining electrode pads; if the signal is the combined mode, controlling the first output end and the second output end to switch between the unipolar mode and the bipolar mode at least once.

9. The control method of a multipole radio frequency apparatus according to claim 8, wherein The control method of the multipolar radio frequency device further comprises: in the bipolar mode or the unipolar mode, controlling the connection between the third input end and the fourth input end and the third output end and the fourth output end to switch at least once.

10. The control method of a multipole radio frequency apparatus according to claim 9, wherein, The control method of the multipolar radio frequency device further comprises: in the bipolar mode or the unipolar mode, controlling the connection between the third input end and the fourth input end and the third output end and the fourth output end to switch with a first preset period.

11. The control method of a multipole radio frequency apparatus according to claim 10, wherein, The control method of the multipolar radio frequency device further comprises: in the bipolar mode or the unipolar mode, the switching of the third input end and the fourth input end and the third output end and the fourth output end is connected, and in a treatment process, the heat generated by connecting the first interface to any one of the electrode pads of the therapy electrode is W1, the heat generated by connecting the second interface is W2, and 0.5≤W1 / W2≤2.

0.

12. The control method of a multipole radio frequency apparatus according to claim 8, wherein, The control method of the multipolar radio frequency device further comprises: controlling the first output end and the second output end to switch between the unipolar mode and the bipolar mode with a second preset period.

13. The control method of a multipole radio frequency apparatus according to claim 12, wherein, The control method of the multipolar radio frequency device further comprises: in the combined mode, in a treatment process, the heat generated in the unipolar mode is W3, and the heat generated in the bipolar mode is W4, and 0.5≤W3 / W4≤2.

14. The control method of a multipole radio frequency apparatus according to claim 8, wherein The control method of the multipolar radio frequency device further comprises: obtaining the temperature of the electrode pad of the therapy electrode; judging whether the temperature of the electrode pad exceeds a preset safety temperature threshold; if yes, controlling the radio frequency power supply to stop outputting radio frequency energy; if no, controlling the radio frequency power supply to maintain effective radio frequency energy output.

15. A radio frequency treatment device, characterized in that The multipolar radio frequency device comprises any one of claims 1 to 7.

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