Surgical electrode capable of detecting thermal injury, energy host and plasma surgical equipment

Abstract

The utility model relates to the technical field of medical instruments, in particular to a surgical electrode capable of detecting thermal injury, an energy host and plasma surgical equipment, the surgical electrode comprises a handle, an electrode stem and a pressure sensor; the pressure sensor is used for collecting pressure between the pressure sensor and the target tissue and transmitting an obtained collection signal to the energy host, so that the energy host uses the collection signal to detect the thermal damage degree of the target tissue. As the thermal damage degrees of the target tissues are different, the pressures detected by the pressure sensor are different, and a certain corresponding relation exists between the pressures and the thermal damage degrees, the pressure between the pressure sensor and the target tissues can be acquired by the pressure sensor, and an acquired signal is transmitted to the energy host; the energy host uses the collected signals to detect the thermal damage degree of the target tissue, and therefore the effect of determining the thermal damage degree of the human tissue in the cutting process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a surgical electrode, an energy host and a plasma surgical device capable of detecting thermal damage. Background Art

[0002] At present, plasma surgical equipment can output high-frequency energy to the surgical electrode through the energy host. The electric field generated by the surgical electrode can excite the physiological saline into plasma, and act on the lesion site of the human body to achieve a cutting effect.

[0003] During the cutting process, excessive output energy or prolonged action on a certain tissue site will cause varying degrees of thermal damage to human tissue. Therefore, how to determine the degree of thermal damage to human tissue during the cutting process is an urgent problem to be solved.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Utility Model Content

[0005] The main purpose of the present invention is to provide a surgical electrode, an energy host and a plasma surgical device that can detect thermal damage, aiming to solve the technical problem of how to determine the degree of thermal damage to human tissue during the cutting process in the prior art.

[0006] To achieve the above-mentioned object, the present invention provides a surgical electrode capable of detecting thermal damage, the surgical electrode comprising: a handle, an electrode rod, and a pressure sensor;

[0007] The electrode rod has a connecting portion and an application portion that are arranged opposite to each other along its length direction, the connecting portion is connected to the handle, the application portion is used to generate an electric field, the pressure sensor is arranged in the application portion, and the pressure sensor is electrically connected to an external energy host;

[0008] The pressure sensor is used to collect the pressure between the target tissue and transmit the obtained collection signal to the energy host, so that the energy host uses the collection signal to detect the degree of thermal damage to the target tissue.

[0009] Optionally, the pressure sensor includes: an elastic membrane, a housing, and an optical fiber;

[0010] The shell is formed with a through hole extending axially through the shell, the elastic membrane is arranged at one end of the through hole, an air gap is formed between the shell and the elastic membrane, the optical fiber is arranged in the through hole, and the optical fiber extends from the other end of the through hole and is connected to the energy host.

[0011] Optionally, the pressure sensor further comprises: a spacer layer;

[0012] The spacer layer is arranged between the shell and the elastic membrane, and a hollow portion is formed through the spacer layer. The air gap is formed in the hollow portion.

[0013] Optionally, the number of the pressure sensors is at least two, and the pressure sensors are evenly arranged in the application part.

[0014] In addition, to achieve the above-mentioned purpose, the present invention also proposes an energy host connected to the surgical electrode capable of detecting thermal damage as described above, the energy host comprising: an acquisition module, a conversion module and a processing module;

[0015] The acquisition module is connected to the pressure sensor in the surgical electrode and the conversion module, and is used to receive the acquisition signal generated by the pressure sensor, convert the acquisition signal into a pressure signal, and transmit it to the conversion module;

[0016] The conversion module is connected to the processing module, and is used to perform signal conversion on the pressure signal and transmit the converted pressure signal to the processing module;

[0017] The processing module is used to receive the converted pressure signal, and the converted pressure signal is used to determine the degree of thermal damage to the target tissue.

[0018] Optionally, the acquisition module includes: a photoelectric detection unit and a linear amplification isolation unit;

[0019] The photoelectric detection unit is connected to the pressure sensor and the linear amplification isolation unit, and is used to receive the acquisition signal generated by the pressure sensor and convert the acquisition signal into a pressure signal and transmit it to the linear amplification isolation unit;

[0020] The linear amplification and isolation unit is connected to the conversion module, and is used to perform linear amplification and isolation on the pressure signal, and transmit the linearly amplified and isolated pressure signal to the conversion module.

[0021] Optionally, the linear amplification and isolation unit includes: a linear isolation subunit and an amplification subunit;

[0022] The linear isolation subunit is connected to the photoelectric detection unit and the amplification subunit, and is used to perform linear isolation on the pressure signal and transmit the linearly isolated pressure signal to the amplification subunit;

[0023] The amplifying subunit is connected to the conversion module, and is used to amplify the linearly isolated pressure signal and transmit the linearly amplified and isolated pressure signal to the conversion module.

[0024] Optionally, the acquisition module further includes: a reference voltage unit and an adding unit;

[0025] The reference voltage unit is connected to the adding unit, and the reference voltage unit is used to transmit the generated reference signal to the adding unit;

[0026] The adding unit is connected to the amplifying subunit and the conversion module. The amplifying subunit is specifically connected to the conversion module through the adding unit. The adding unit is used to add the reference signal and the pressure signal after linear amplification and isolation, and transmit the added pressure signal to the conversion module.

[0027] Optionally, the energy host further comprises: an energy output regulating module;

[0028] The processing module is connected to the energy output regulating module, and the processing module is further configured to output a regulating signal corresponding to the degree of thermal damage to the target tissue to the energy output regulating module;

[0029] The energy output regulating module is connected to the electrode rod of the surgical electrode. The energy output regulating module is used to receive the regulating signal. The regulating signal is used to regulate the energy transmitted to the electrode rod so that the electrode rod can regulate the generated electric field.

[0030] In addition, to achieve the above-mentioned purpose, the present invention also proposes a plasma surgical device, which includes the surgical electrode capable of detecting thermal damage as described above and / or the energy host as described above.

[0031] The present invention proposes a surgical electrode, an energy main unit, and a plasma surgical device capable of detecting thermal damage. The surgical electrode comprises: a handle, an electrode rod, and a pressure sensor. The electrode rod has a connecting portion and an application portion arranged relative to each other along its length, the connecting portion being connected to the handle, the application portion being used to generate an electric field, the pressure sensor being arranged in the application portion, and the pressure sensor being electrically connected to the energy main unit. The pressure sensor is used to collect the pressure between the electrode and the target tissue, and transmit the obtained collected signal to the energy main unit, so that the energy main unit uses the collected signal to detect the degree of thermal damage to the target tissue. Since the degree of thermal damage to the target tissue is different, the pressure detected by the pressure sensor is different, and there is a certain corresponding relationship between the pressure and the degree of thermal damage. Therefore, the present invention can collect the pressure between the electrode and the target tissue through the pressure sensor, and transmit the obtained collected signal to the energy main unit, so that the energy main unit uses the collected signal to detect the degree of thermal damage to the target tissue, thereby achieving the effect of determining the degree of thermal damage to human tissue during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 This is a structural diagram of the plasma equipment;

[0034] Figure 2 This is a schematic structural diagram of a first embodiment of a surgical electrode capable of detecting thermal damage according to an embodiment of the present utility model;

[0035] Figure 3 A schematic structural diagram of the electrode rod application portion of a surgical electrode capable of detecting thermal damage proposed in an embodiment of the present utility model;

[0036] Figure 4 This is a schematic structural diagram of a pressure sensor in a second embodiment of a surgical electrode capable of detecting thermal damage according to an embodiment of the present utility model;

[0037] Figure 5 This is a structural block diagram of the first embodiment of the energy host proposed in the embodiment of the present utility model;

[0038] Figure 6 This is a circuit schematic diagram of the acquisition module in the first embodiment of the energy host proposed in the embodiment of the present utility model;

[0039] Figure 7This is a structural block diagram of the second embodiment of the energy host proposed in an embodiment of the present utility model.

[0040] Description of Figure Numbers:

[0041]

[0042]

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0048] It should be noted that the plasma device may include: an energy host 1, a foot switch 2, a perfusion controller 3 and a surgical electrode 4. Figure 1 , Figure 1 This is the structural diagram of the plasma equipment, such as Figure 1 As shown, the energy host 1 is connected to the foot switch 2, the perfusion controller 3 and the surgical electrode 4 respectively;

[0049] Among them, the user can control the high-frequency energy output by the energy host 1 to the surgical electrode 4 through the foot switch 2, so that the surgical electrode 4 generates an electric field; the user can also control the start or stop of the injection of physiological saline into the lesion site through the perfusion controller 3. Under the action of the electric field, the physiological saline can be excited to produce radio frequency plasma and then act on the lesion, which can destroy human tissue and have the effect of cutting tissue.

[0050] However, during the cutting process, excessive output energy or prolonged action on a certain tissue site will cause varying degrees of thermal damage to human tissue. Therefore, how to determine the degree of thermal damage to human tissue during the cutting process is an urgent problem to be solved.

[0051] In order to solve the above technical problems, the present embodiment provides a surgical electrode capable of detecting thermal damage, the surgical electrode comprising: a handle, an electrode rod, and a pressure sensor; the electrode rod has a connecting portion and an application portion arranged opposite to each other along its length, the connecting portion being connected to the handle, the application portion being used to generate an electric field, the pressure sensor being arranged in the application portion, and the pressure sensor being electrically connected to an energy host; the pressure sensor being used to collect the pressure between the electrode rod and the target tissue, and transmitting the obtained collected signal to the energy host, so that the energy host uses the collected signal to detect the degree of thermal damage to the target tissue. Since the degree of thermal damage to the target tissue is different, the pressure detected by the pressure sensor is different, and there is a certain corresponding relationship between pressure and the degree of thermal damage, the present embodiment can collect the pressure between the electrode rod and the target tissue through the pressure sensor, and transmit the obtained collected signal to the energy host, so that the energy host uses the collected signal to detect the degree of thermal damage to the target tissue, thereby achieving the effect of determining the degree of thermal damage to human tissue during the cutting process.

[0052] For ease of understanding, the following Figures 2 to 7 The surgical electrode capable of detecting thermal damage provided in the embodiment of the present application is introduced in detail.

[0053] Reference Figure 2 and Figure 3 , Figure 2 This is a structural diagram of the first embodiment of the surgical electrode 4 capable of detecting thermal damage proposed in the embodiment of the present utility model. Figure 3 This is a structural schematic diagram of the application portion of the electrode rod 42 of the surgical electrode 4 capable of detecting thermal damage proposed in an embodiment of the present utility model.

[0054] like Figure 2 and Figure 3 As shown, in this embodiment, the surgical electrode 4 includes: a handle 41, an electrode rod 42 and a pressure sensor 43;

[0055] The electrode rod 42 has a connecting portion and an application portion that are arranged opposite to each other along its length. The connecting portion is connected to the handle 41. The application portion is used to generate an electric field. The pressure sensor 43 is arranged in the application portion and is electrically connected to the external energy host 1.

[0056] The pressure sensor 43 is used to collect the pressure between the target tissue and the energy host 1, and transmit the obtained collected signal to the energy host 1, so that the energy host 1 uses the collected signal to detect the degree of thermal damage to the target tissue.

[0057] It is understandable that the target tissue may be human tissue that needs to be cut. The pressure sensor 43 may be an optical fiber pressure sensor, or any other sensor for measuring pressure, which is not limited in this embodiment.

[0058] It should be emphasized that, due to the different degrees of thermal damage to the target tissue, the pressure detected by the pressure sensor 43 is also different. Therefore, in this embodiment, the pressure sensor 43 can be set at the application part of the surgical electrode 4. When the surgical electrode 4 is working, the pressure between the pressure sensor 43 and the target tissue can be collected to determine the degree of thermal damage to the target tissue. Figure 2 As shown, the pressure sensor 43 can be connected to a cable plug 44 via a cable, and then electrically connected to the energy host 1 via the cable plug 44 .

[0059] Furthermore, when in use, the pressure sensor 43 on the surgical electrode 4 will monitor the pressure on the target tissue in real time, and transmit the acquired acquisition signal to the energy host 1 through the cable plug 44. The energy host 1 will then use the acquisition signal to detect the degree of thermal damage to the target tissue.

[0060] Continue as Figure 2 As shown, the surgical electrode 4 may further include a suction tube 46 and a water injection tube 45. One end of the water injection tube 45 may be connected to the electrode rod 42 via a handle 41, and the other end of the water injection tube 45 may be connected to the perfusion controller 3 via the energy host 1. Physiological saline may then be transferred to the water injection tube 45 via the perfusion controller 3, and then delivered from the water injection tube 45 to the target tissue via the electrode rod 42. One end of the suction tube 46 may also be connected to the electrode rod 42 via the handle 41. The electrode rod 42 may draw waste physiological saline from the target tissue and remove it through the suction tube 46.

[0061] Furthermore, in order to reduce the pressure detection error caused by manual operation of the surgical electrode 4, as Figure 3 As shown, in this embodiment, the number of the pressure sensors 43 is at least two, and the pressure sensors 43 are evenly arranged in the application part.

[0062] In this embodiment, multiple pressure sensors 43 can be provided, for example, three or four, and this embodiment is not limited thereto. To reduce errors, the pressure sensors 43 can be evenly arranged on the application portion of the surgical electrode 4, specifically along a circumferential loop around the end surface of the application portion. This ensures more accurate acquisition signals.

[0063] Since this embodiment can collect the pressure between the target tissue and the pressure sensor 43, the obtained collection signal is transmitted to the energy host 1, so that the energy host 1 can determine the degree of thermal damage based on the collection signal, thereby achieving the effect of determining the degree of thermal damage to human tissue during the cutting process.

[0064] Reference Figure 4 , Figure 4 This is a structural diagram of the pressure sensor 43 in the second embodiment of the surgical electrode 4 capable of detecting thermal damage proposed in an embodiment of the present utility model.

[0065] In order to improve the anti-interference performance of the acquisition process and the accuracy of the acquisition results, this embodiment uses an optical fiber pressure sensor as the pressure sensor 43 for illustration. The specific optical fiber pressure sensor can be a Fabry-Perot (FP) type optical fiber pressure sensor. Of course, other optical fiber pressure sensors can also be used, and this embodiment does not limit this. Figure 4 As shown, in this embodiment, the pressure sensor 43 includes: an elastic membrane 431, a housing 432 and an optical fiber 433;

[0066] The shell 432 is formed with a through hole extending axially through the shell 432 , the elastic membrane 431 is arranged at one end of the through hole, an air gap 434 is formed between the shell 432 and the elastic membrane 431 , the optical fiber 433 is arranged in the through hole, and the optical fiber 433 extends from the other end of the through hole and is electrically connected to the energy host 1 .

[0067] It should be noted that the optical fiber pressure sensor is a sensor that uses the optical properties of optical fiber to measure pressure. In this embodiment, the magnitude of the target tissue pressure can be reflected by the change in the spectrum transmitted in the optical fiber 433.

[0068] It is understood that in this embodiment, a light source can be provided within the energy host 1 to transmit the generated light into the air gap 434 via the optical fiber 433. In actual use, light emitted by the light source within the energy host 1 is incident perpendicularly onto the end face of the optical fiber 433 through the optical fiber 433. A portion of the light is reflected by the end face of the transmission optical fiber 433, while the remaining light is transmitted and reaches the elastic membrane 431, where it is partially reflected by the inner surface of the elastic membrane 431 and coupled back into the optical fiber 433. The reflected light from the end face of the optical fiber 433 and the reflected light from the surface of the elastic membrane 431 interfere with each other. Based on the principle of thin film elastic deformation, the elastic membrane 431 deforms under the action of external pressure, thereby changing the FP cavity length and causing changes in the interference spectrum. The energy host 1 can then measure and demodulate the interference spectrum to obtain the pressure changes acting on the elastic membrane 431.

[0069] Therefore, in this embodiment, the pressure sensor 43 can transmit the obtained interference spectrum as the above-mentioned acquisition signal to the energy host 1, and the energy host 1 can obtain a specific pressure value based on the interference spectrum, and then determine the degree of thermal damage to the target tissue based on the pressure value.

[0070] Furthermore, in order to isolate the optical fiber 433 from the influence of the external environment and provide a fixed support structure, in this embodiment, the pressure sensor 43 further includes: a spacer layer 435;

[0071] The spacer layer 435 is disposed between the housing 432 and the elastic membrane 431 , and a hollow portion is formed through the spacer layer 435 . The air gap 434 is formed in the hollow portion.

[0072] Continue as Figure 4 As shown, both ends of the spacer layer 435 may be connected to the housing 432 and the elastic membrane 431 respectively, and the middle area of the spacer layer 435 (ie, the hollow portion) is the air gap 434 .

[0073] Therefore, the spacer layer 435 can prevent the influence of external light on the detection result, thereby further improving the detection accuracy.

[0074] This embodiment uses an optical fiber pressure sensor as the pressure sensor 43 to measure pressure, thereby improving the anti-interference performance of the acquisition process and the accuracy of the acquisition results, while also having a faster response speed.

[0075] In addition, to achieve the above purpose, this embodiment also provides an energy host 1, which is connected to the surgical electrode 4 capable of detecting thermal damage as described above, Figure 5 , Figure 5 This is a structural block diagram of the first embodiment of the energy host 1 proposed in an embodiment of the present utility model.

[0076] like Figure 5As shown, in this embodiment, the energy host 1 includes: a collection module 11, a conversion module 12 and a processing module 13;

[0077] The acquisition module 11 is connected to the pressure sensor 43 in the surgical electrode 4 and the conversion module 12. The acquisition module 11 is used to receive the acquisition signal generated by the pressure sensor 43, convert the acquisition signal into a pressure signal, and transmit it to the conversion module 12.

[0078] The conversion module 12 is connected to the processing module 13, and is used to perform signal conversion on the pressure signal and transmit the converted pressure signal to the processing module 13;

[0079] The processing module 13 is used to receive the converted pressure signal, and the converted pressure signal is used to determine the degree of thermal damage to the target tissue.

[0080] It should be noted that the above-mentioned signal conversion can be analog-to-digital conversion. Since the collection signal transmitted by the optical fiber 433 is in the form of light, the above-mentioned collection module 11 can convert the collection signal in the form of light into a pressure signal in the form of voltage, and transmit it to the conversion module 12. The conversion module 12 then performs analog-to-digital conversion on the pressure signal to obtain the above-mentioned converted pressure signal in the form of a digital signal.

[0081] The conversion module 12 may be an analog-to-digital converter (ADC), which may include an analog-to-digital conversion chip. Specifically, the chip model may be AD7606C. Of course, other chips that implement this function may also be used, and this embodiment is not limited thereto. Furthermore, the acquisition module 11 may be connected to the input of the ADC to perform analog-to-digital conversion on the pressure signal and transmit the converted pressure signal to the processing module 13.

[0082] The processing module 13 can be comprised of a field-programmable gate array (FPGA), or a microcontroller (MCU). This embodiment uses an FPGA for illustration. Furthermore, the output of the ADC can be connected to the input of the FPGA. Upon receiving the converted pressure signal, the FPGA can determine the FP cavity length based on the pressure signal, determine a specific pressure value based on the cavity length, and finally, determine the degree of thermal damage corresponding to the pressure value based on a preset mapping relationship.

[0083] Furthermore, in order to convert the light-form collected signal into a voltage-form pressure signal, continue as follows Figure 5As shown, in this embodiment, the acquisition module 11 includes: a photoelectric detection unit 111 and a linear amplification isolation unit 112;

[0084] The photoelectric detection unit 111 is connected to the pressure sensor 43 and the linear amplification isolation unit 112. The photoelectric detection unit 111 is used to receive the acquisition signal generated by the pressure sensor 43 and convert the acquisition signal into a pressure signal and transmit it to the linear amplification isolation unit 112.

[0085] The linear amplification and isolation unit 112 is connected to the conversion module 12 . The linear amplification and isolation unit 112 is used to perform linear amplification and isolation on the pressure signal and transmit the linearly amplified and isolated pressure signal to the conversion module 12 .

[0086] For ease of understanding, refer to Figure 6 , Figure 6 This is a circuit diagram of the acquisition module 11 in the first embodiment of the energy host 1 proposed in the embodiment of the present utility model. Figure 6 As shown, the photoelectric detection unit 111 may include: a photodiode LED, a first capacitor C1 and a first resistor R1;

[0087] Among them, the cathode of the above-mentioned photodiode LED is grounded, the anode of the photodiode LED is respectively connected to the first end of the first capacitor C1 and the first end of the first resistor R1, the second end of the first capacitor C1 is grounded, and the second end of the first resistor R1 is connected to the linear amplification isolation unit 112.

[0088] It is understandable that the photodiode LED can receive the collection signal transmitted by the optical fiber 433 and convert it into a voltage to obtain a pressure signal, which is then transmitted to the linear amplification isolation unit 112 through the first resistor R1.

[0089] Furthermore, since the pressure signal is an analog signal, directly isolating it optically will result in poor linearity between input and output. Therefore, this embodiment adopts the form of linear isolation and amplifies the linear isolation. Figure 5 As shown, the linear amplification and isolation unit 112 includes: a linear isolation subunit 1121 and an amplification subunit 1122;

[0090] The linear isolator unit 1121 is connected to the photoelectric detection unit 111 and the amplifier unit 1122 . The linear isolator unit 1121 is used to linearly isolate the pressure signal and transmit the linearly isolated pressure signal to the amplifier unit 1122 .

[0091] The amplifying subunit 1122 is connected to the conversion module 12 . The amplifying subunit 1122 is configured to amplify the linearly isolated pressure signal and transmit the linearly amplified and isolated pressure signal to the conversion module 12 .

[0092] Continue as Figure 6 As shown, the linear isolation subunit 1121 may include: a first operational amplifier A1, a photocoupler U1, a second resistor R2, and second to fourth capacitors C2 to C4;

[0093] Among them, the positive input terminal of the first operational amplifier A1 (ie Figure 6 The third pin of the first operational amplifier A1 is grounded, and the inverting input terminal of the first operational amplifier A1 (ie Figure 6 The second pin of the first operational amplifier A1 is connected to the second end of the first resistor R1 and the first end of the fourth capacitor C4, and the first power supply terminal of the first operational amplifier A1 (ie Figure 6 The seventh pin of the first operational amplifier A1 in the circuit is connected to the power supply (i.e. Figure 6 VCC), the first end of the second capacitor C2 and the first end of the third capacitor C3 are connected, the second end of the second capacitor C2 is connected to the second end of the third capacitor C3, the second end of the second capacitor C2 is also grounded, and the second power supply terminal of the first operational amplifier A1 (i.e. Figure 6 The fourth pin of the first operational amplifier A1 in the circuit) is connected to the power supply (i.e. Figure 6 -VCC) is connected to the output terminal of the first operational amplifier A1 (i.e. Figure 6 The sixth pin of the first operational amplifier A1 is connected to the second end of the fourth capacitor C4 and the first end of the second resistor R2, respectively. The second end of the second resistor R2 is connected to the first input end of the photocoupler U1 (ie Figure 6 The first pin of the optocoupler U1 is connected to the second input terminal of the optocoupler U1 (i.e. Figure 6 The second pin of the optocoupler U1) is connected to the power supply (i.e. Figure 6 VCC connection), the first feedback terminal of the optocoupler U1 (i.e. Figure 6 The third pin of the photoelectric coupler U1 is connected to the second end of the first resistor R1, and the second feedback end of the photoelectric coupler U1 (ie Figure 6 The fourth pin of the optocoupler U1 is grounded, and the first output terminal of the optocoupler U1 (i.e. Figure 6 The sixth pin of the photoelectric coupler U1 is connected to the amplifier unit 1122, and the second output terminal of the photoelectric coupler U1 (ie Figure 6 The fifth pin of the optocoupler U1 is grounded.

[0094] The amplifying subunit 1122 may include: a second operational amplifier A2, a third resistor R3, a fourth resistor R4, and a fifth capacitor C5 to a seventh capacitor C7;

[0095] Among them, the inverting input terminal of the second operational amplifier A2 (ie Figure 6 The second pin of the second operational amplifier A2 is connected to the first output terminal of the photocoupler U1, the first terminal of the seventh capacitor C7 and the first terminal of the third resistor R3 respectively, and the non-inverting input terminal of the second operational amplifier A2 (i.e. Figure 6 The third pin of the second operational amplifier A2 is grounded, and the first power supply terminal of the second operational amplifier A2 (ie Figure 6 The seventh pin of the second operational amplifier A2 is connected to the power supply (i.e. Figure 6 VDD), the first end of the fifth capacitor C5 and the first end of the sixth capacitor C6 are connected, the second end of the fifth capacitor C5 is connected to the second end of the sixth capacitor C6, the second end of the fifth capacitor C5 is also grounded, and the second power supply terminal of the second operational amplifier A2 (i.e. Figure 6 The fourth pin of the second operational amplifier A2) and the power supply (ie Figure 6 -VDD) is connected to the output of the second operational amplifier A2 (i.e. Figure 6 The sixth pin of the second operational amplifier A2 is respectively connected to the second end of the seventh capacitor C7, the second end of the third resistor R3 and the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is connected to the conversion module 12.

[0096] In a specific implementation, when the inverting input terminal of the above-mentioned first operational amplifier A1 receives a pressure signal, it is transmitted to the optocoupler U1 through the output terminal of the first operational amplifier A1 and then isolated, and then transmitted to the first operational amplifier A1 through the first feedback terminal of the optocoupler U1 for feedback, thereby achieving linear isolation, and then the linearly isolated pressure signal is transmitted to the second operational amplifier A2 through the first output terminal of the optocoupler U1 for amplification, thereby obtaining a linearly isolated and amplified pressure signal, and then transmitted to the conversion module 12 for analog-to-digital conversion.

[0097] Furthermore, in order to improve the stability of the signal, continue as Figure 5 As shown, in this embodiment, the acquisition module 11 further includes: a reference voltage unit 113 and an adding unit 114;

[0098] The reference voltage unit 113 is connected to the adding unit 114 , and the reference voltage unit 113 is used to transmit the generated reference signal to the adding unit 114 ;

[0099] The adding unit 114 is connected to the amplifying subunit 1122 and the conversion module 12. The amplifying subunit 1122 is specifically connected to the conversion module 12 through the adding unit 114. The adding unit 114 is used to add the reference signal and the pressure signal after linear amplification and isolation, and transmit the added pressure signal to the conversion module 12.

[0100] Continue as Figure 6 As shown, the reference voltage unit 113 may include: a voltage stabilizing chip U2, a third operational amplifier A3, an eighth capacitor C8 to a thirteenth capacitor C13, and a fifth resistor R5 to a seventh resistor R7;

[0101] Among them, the input pin of the voltage regulator chip U2 (i.e. Figure 6 The first pin of the voltage regulator chip U2 is connected to the power supply (i.e. Figure 6 The first end of the eighth capacitor C8 and the first end of the ninth capacitor C9 are connected, the second end of the eighth capacitor C8 is connected to the second end of the ninth capacitor C9, the second end of the eighth capacitor C8 is also grounded, and the ground pin of the voltage regulator chip U2 (i.e. Figure 6 The third pin of the voltage regulator chip U2 is grounded, and the output pin of the voltage regulator chip U2 (i.e. Figure 6 The second pin of the voltage regulator chip U2 is connected to the power supply (i.e. Figure 6 The first end of the tenth capacitor C10, the first end of the eleventh capacitor C11 and the first end of the fifth resistor R5 are connected, the second end of the tenth capacitor C10 is connected to the second end of the eleventh capacitor C11, the second end of the tenth capacitor C10 is also grounded, and the second end of the fifth resistor R5 is connected to the non-inverting input terminal of the third operational amplifier A3 (i.e. Figure 6 The inverting input terminal of the third operational amplifier A3 (i.e. Figure 6 The second pin of the third operational amplifier A3 is connected to the first end of the sixth resistor R6, and the second power supply terminal of the third operational amplifier A3 (ie Figure 6 The fourth pin of the third operational amplifier A3 is grounded, and the first power supply terminal of the third operational amplifier A3 (ie Figure 6 The seventh pin of the third operational amplifier A3 is connected to the power supply (i.e. Figure 6 The first end of the twelfth capacitor C12 and the first end of the thirteenth capacitor C13 are connected, the second end of the twelfth capacitor C12 is also connected to the second end of the thirteenth capacitor C13, the second end of the twelfth capacitor C12 is also grounded, and the output end of the third operational amplifier A3 (i.e. Figure 6The sixth pin of the third operational amplifier A3 is connected to the second end of the sixth resistor R6 and the first end of the seventh resistor R7 respectively. The second end of the seventh resistor R7 is connected to the second end of the fourth resistor R4 and the adding unit 114.

[0102] The adding unit 114 may include: a fourth operational amplifier A4, a switch Q, an eighth resistor R8, a ninth resistor R9, and fourteenth to sixteenth capacitors C14 to C16;

[0103] Among them, the non-inverting input terminal of the fourth operational amplifier A4 (ie Figure 6 The third pin of the fourth operational amplifier A4 is connected to the second end of the fourth resistor R4 and the first end of the fourteenth capacitor C14 respectively, the second end of the fourteenth capacitor C14 is grounded, and the inverting input terminal of the fourth operational amplifier A4 (i.e. Figure 6 The second pin of the fourth operational amplifier A4 is connected to the second end of the eighth resistor R8 and the first end of the ninth resistor R9 respectively. The first end of the eighth resistor R8 is grounded, and the second end of the ninth resistor R9 is connected to the input end of the conversion module 12 (i.e. Figure 6 ADC) is connected to the second power supply terminal of the fourth operational amplifier A4 (ie Figure 6 The fourth pin of the fourth operational amplifier A4) and the power supply (ie Figure 6 -VDD) is connected to the first power supply terminal of the fourth operational amplifier A4 (ie Figure 6 The seventh pin of the fourth operational amplifier A4 is connected to the power supply (i.e. Figure 6 The first end of the fifteenth capacitor C15 and the first end of the sixteenth capacitor C16 are connected, the second end of the fifteenth capacitor C15 is connected to the second end of the sixteenth capacitor C16, the second end of the fifteenth capacitor C15 is also grounded, and the output end of the fourth operational amplifier A4 (i.e. Figure 6 The sixth pin of the fourth operational amplifier A4 is connected to the control end of the switch tube Q, and the input end of the switch tube Q is connected to the power supply (ie Figure 6 The output end of the switch tube Q is connected to the second end of the ninth resistor R9.

[0104] In a specific implementation, the above-mentioned voltage stabilizing chip U2 can provide a stable voltage to the non-inverting input terminal of the third operational amplifier A3, and the output terminal of the third operational amplifier A3 can generate a reference signal and transmit it to the non-inverting input terminal of the fourth operational amplifier A4. At the same time, the non-inverting input terminal of the fourth operational amplifier A4 can receive the pressure signal after linear isolation and amplification output from the output terminal of the second operational amplifier A2. After adding the pressure signal after linear isolation and amplification to the reference signal, the switch tube Q is turned on, and the output terminal of the switch tube Q outputs the added pressure signal to the conversion module 12.

[0105] Reference Figure 7 , Figure 7 This is a structural block diagram of the second embodiment of the energy host 1 proposed in an embodiment of the present utility model.

[0106] In order to adjust the energy output to the surgical electrode 4 in real time according to the degree of thermal damage, Figure 7 As shown, in this embodiment, the energy host 1 further includes: an energy output regulating module 14;

[0107] The processing module 13 is connected to the energy output regulating module 14, and the processing module 13 is further configured to output a regulating signal corresponding to the degree of thermal damage to the target tissue to the energy output regulating module 14;

[0108] The energy output regulating module 14 is connected to the electrode rod 42 of the surgical electrode 4. The energy output regulating module 14 is also used to receive the regulating signal, which is used to regulate the energy transmitted to the electrode rod 42 so that the electrode rod 42 can regulate the generated electric field.

[0109] It should be noted that the energy output regulating module 14 may be a module for regulating the energy output to the surgical electrode 4 , such as a pulse modulator, etc., and this embodiment does not impose any limitation on this.

[0110] The processing module 13 may store output energies corresponding to different degrees of thermal damage. After determining the degree of thermal damage to the target tissue, the processing module 13 may determine the amount of energy currently required based on the degree of thermal damage, and generate a corresponding adjustment signal that is transmitted to the energy output adjustment module 14. The energy output adjustment module 14 controls the energy transmitted to the surgical electrode 4 based on the adjustment signal, thereby controlling the output energy in real time based on the degree of thermal damage to the target tissue, thereby reducing thermal damage to the surgical site of the patient, facilitating postoperative lesion healing, and improving surgical safety and efficiency.

[0111] It should also be noted that since plasma surgical equipment is mainly used in surgical sites such as the ears, nose, throat and joints, and the tissue hardness of these surgical sites is different, when the surgical electrode 4 is applied to these tissues, the pressure signal fed back by the pressure sensor 43 for the same degree of thermal damage may also be different. Therefore, in this embodiment, the surgical site can be pre-set in the energy host 1 before use, and the processing module 13 then generates a corresponding adjustment signal according to the current surgical site, thereby achieving precise energy output control.

[0112] To achieve the above-mentioned purpose, this embodiment also provides a plasma surgical device, which includes a surgical electrode 4 that can detect thermal damage as described above and / or an energy host 1 as described above. The specific structure of the surgical electrode 4 refers to the embodiment of the above-mentioned surgical electrode 4, and the specific structure of the energy host 1 refers to the embodiment of the above-mentioned energy host 1. Since this plasma surgical device adopts all the technical solutions of all the embodiments of the above-mentioned surgical electrode 4 and / or energy host 1, it at least has all the beneficial effects brought by the technical solutions of the embodiments of the above-mentioned surgical electrode 4 and / or energy host 1, which will not be repeated here.

[0113] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A surgical electrode capable of detecting thermal damage, characterized in that: The surgical electrode comprises: a handle, an electrode rod and a pressure sensor; The electrode rod has a connecting portion and an application portion that are arranged opposite to each other along its length direction, the connecting portion is connected to the handle, the application portion is used to generate an electric field, the pressure sensor is arranged in the application portion, and the pressure sensor is electrically connected to an external energy host; The pressure sensor is used to collect the pressure between the target tissue and transmit the obtained collection signal to the energy host, so that the energy host uses the collection signal to detect the degree of thermal damage to the target tissue.

2. The surgical electrode capable of detecting thermal damage according to claim 1, wherein: The pressure sensor includes: an elastic membrane, a housing, and an optical fiber; The shell is formed with a through hole extending axially through the shell, the elastic membrane is arranged at one end of the through hole, an air gap is formed between the shell and the elastic membrane, the optical fiber is arranged in the through hole, and the optical fiber extends from the other end of the through hole and is connected to the energy host.

3. The surgical electrode capable of detecting thermal damage according to claim 2, wherein: The pressure sensor further includes: a spacer layer; The spacer layer is arranged between the shell and the elastic membrane, and a hollow portion is formed through the spacer layer. The air gap is formed in the hollow portion.

4. The surgical electrode capable of detecting thermal damage according to any one of claims 1 to 3, characterized in that: The number of the pressure sensors is at least two, and the pressure sensors are evenly arranged in the application part.

5. An energy host connected to a surgical electrode capable of detecting thermal damage according to any one of claims 1 to 4, characterized in that: The energy host includes: an acquisition module, a conversion module and a processing module; The acquisition module is connected to the pressure sensor in the surgical electrode and the conversion module, and is used to receive the acquisition signal generated by the pressure sensor, convert the acquisition signal into a pressure signal, and transmit it to the conversion module; The conversion module is connected to the processing module, and is used to perform signal conversion on the pressure signal and transmit the converted pressure signal to the processing module; The processing module is used to receive the converted pressure signal, and the converted pressure signal is used to determine the degree of thermal damage to the target tissue.

6. The energy host according to claim 5, characterized in that: The acquisition module includes: a photoelectric detection unit and a linear amplification isolation unit; The photoelectric detection unit is connected to the pressure sensor and the linear amplification isolation unit, and is used to receive the acquisition signal generated by the pressure sensor and convert the acquisition signal into a pressure signal and transmit it to the linear amplification isolation unit; The linear amplification and isolation unit is connected to the conversion module, and is used to perform linear amplification and isolation on the pressure signal, and transmit the linearly amplified and isolated pressure signal to the conversion module.

7. The energy host according to claim 6, characterized in that: The linear amplification isolation unit includes: a linear isolation subunit and an amplification subunit; The linear isolation subunit is connected to the photoelectric detection unit and the amplification subunit, and is used to perform linear isolation on the pressure signal and transmit the linearly isolated pressure signal to the amplification subunit; The amplifying subunit is connected to the conversion module, and is used to amplify the linearly isolated pressure signal and transmit the linearly amplified and isolated pressure signal to the conversion module.

8. The energy host according to claim 7, characterized in that: The acquisition module further includes: a reference voltage unit and an adding unit; The reference voltage unit is connected to the adding unit, and the reference voltage unit is used to transmit the generated reference signal to the adding unit; The adding unit is connected to the amplifying subunit and the conversion module. The amplifying subunit is specifically connected to the conversion module through the adding unit. The adding unit is used to add the reference signal and the pressure signal after linear amplification and isolation, and transmit the added pressure signal to the conversion module.

9. The energy host according to any one of claims 5 to 8, characterized in that: The energy host further comprises: an energy output regulating module; The processing module is connected to the energy output regulating module, and the processing module is further configured to output a regulating signal corresponding to the degree of thermal damage to the target tissue to the energy output regulating module; The energy output regulating module is connected to the electrode rod of the surgical electrode. The energy output regulating module is used to receive the regulating signal. The regulating signal is used to regulate the energy transmitted to the electrode rod so that the electrode rod can regulate the generated electric field.

10. A plasma surgical device, characterized in that: The plasma surgical device comprises a surgical electrode capable of detecting thermal damage according to any one of claims 1 to 4 and an energy mainframe according to any one of claims 5 to 9.

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