CN112971968A - Medical radio frequency equipment and shunt protection circuit and method of loop electrode of medical radio frequency equipment - Google Patents
Medical radio frequency equipment and shunt protection circuit and method of loop electrode of medical radio frequency equipment Download PDFInfo
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- CN112971968A CN112971968A CN202110154433.2A CN202110154433A CN112971968A CN 112971968 A CN112971968 A CN 112971968A CN 202110154433 A CN202110154433 A CN 202110154433A CN 112971968 A CN112971968 A CN 112971968A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B18/1233—Generators therefor with circuits for assuring patient safety
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
Abstract
The invention discloses a shunt protection circuit of a loop electrode of medical radio frequency equipment, which comprises a plurality of cathodes, an adding circuit and a data processing module, wherein the cathodes are connected with the radio frequency equipment; the negative electrodes are connected with a current sampling circuit; the current sampling circuit is respectively connected with the addition circuit and the data processing module, and the addition circuit is connected with the data processing module; the current sampling circuit is used for collecting the current of the negative electrode to obtain a current sampling value of the negative electrode and transmitting the obtained current sampling value to the addition circuit and the data processing module; the addition circuit is used for receiving the current sampling value transmitted by each current sampling circuit, calculating the total current of all cathodes by receiving each current sampling value, and transmitting the calculated total current to the data processing module; and the data processing module is used for receiving the current sampling value transmitted by each current sampling circuit and the total current transmitted by the addition circuit and judging whether each received current sampling value is in a preset range.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to medical radio frequency equipment and a shunt protection circuit and method of a loop electrode of the medical radio frequency equipment.
Background
Radio frequency medical devices are increasingly used in minimally invasive surgery. The operation modes can be divided into bipolar and monopolar operation modes according to the operation modes of the electrode. In the bipolar mode, both the positive and negative electrodes participate in the surgical treatment of human tissues. In the monopolar mode, only one electrode (referred to herein as the positive electrode) is involved in the surgical treatment of the body tissue, and the other electrode (the negative electrode) functions as a current return path for the rf current through the body and back to the host.
In monopolar mode, excessive concentration of the negative electrode current of the radio frequency medical device used for treatment can cause unnecessary burns. The contact area of the conventional negative plate is increased, and the contact between the gel material and the skin of a human body is improved, so that burns can be well avoided. However, because it is impossible to predict whether the negative plate has poor contact with the human body, there is still a risk that the negative plate will burn the skin of the human body unpredictably and uncontrollably.
For example, patent publication No. CN111658129A discloses a radio frequency therapy apparatus and a control method, the radio frequency therapy apparatus includes a main machine and a handheld portion, wherein the handheld portion includes a first controller, a radio frequency electrode assembly and a temperature detection module; the first controller is used for receiving the temperature detection signal output by the temperature detection module and outputting the temperature detection signal to the host, and the host is used for controlling the size of the radio frequency signal output by the radio frequency power supply output interface according to the received temperature detection signal. The above patent detects the temperatures of the positive and negative electrodes by providing temperature sensors, which adds additional cost and is complicated to operate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a medical radio-frequency device and a shunt protection circuit and a shunt protection method of a loop electrode of the medical radio-frequency device.
In order to achieve the purpose, the invention adopts the following technical scheme:
a shunt protection circuit of a loop electrode of medical radio frequency equipment comprises a plurality of cathodes connected with the radio frequency equipment, an addition circuit and a data processing module; each negative electrode of the plurality of negative electrodes is connected with a current sampling circuit; the current sampling circuit is respectively connected with the addition circuit and the data processing module, and the addition circuit is connected with the data processing module;
the current sampling circuit is used for collecting the current of the cathode connected with the current sampling circuit to obtain a current sampling value of the cathode and transmitting the obtained current sampling value to the addition circuit and the data processing module;
the addition circuit is used for receiving the current sampling value transmitted by each current sampling circuit, calculating the total current of all cathodes by receiving each current sampling value, and transmitting the calculated total current to the data processing module;
and the data processing module is used for receiving the current sampling value transmitted by each current sampling circuit and the total current transmitted by the addition circuit and judging whether each received current sampling value is in a preset range.
Further, the data processing module comprises a computing unit and a comparing unit;
the calculating unit is used for calculating a maximum current sampling value and a minimum current sampling value according to each received current sampling value;
and the comparison unit is connected with the calculation unit and used for comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
Further, the calculating unit is further configured to calculate a current average value of the negative electrode according to each received current sample value.
Further, the comparison unit includes:
the first judgment unit is used for judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not;
the second judgment unit is used for judging whether the maximum current sampling value exceeds a second preset proportion of the total current or not;
the third judging unit is used for judging whether the minimum current sampling value is lower than a third preset proportion of the current average value or not;
and the fourth judging unit is used for judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
The device further comprises a controller and a warning module, wherein the controller is respectively connected with the data processing module and the warning module; the controller is used for receiving the processing result of the data processing module and controlling the warning module to send out warning information.
Correspondingly, the medical radio-frequency equipment comprises a radio-frequency equipment connected with a positive electrode and a negative electrode plate, wherein a plurality of negative electrodes separated in a matrix form are arranged in the negative electrode plate; the shunt protection circuit of the loop electrode of the medical radio-frequency equipment is also included.
Correspondingly, the shunt protection method for the medical radio-frequency equipment and the loop electrode thereof is also provided, and comprises the following steps:
s1, acquiring a current sampling value of a negative electrode connected with a current sampling circuit and acquired by a current sampling circuit;
s2, receiving the total current of all cathodes calculated by the addition circuit according to the acquired current sampling value;
and S3, judging whether each current sampling value is in a preset range or not according to the total current obtained by calculating the obtained current sampling values.
Further, the step S3 includes:
s31, calculating a maximum current sampling value and a minimum current sampling value in all current sampling values according to the acquired current sampling values;
and S32, comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
Further, the step S31 includes calculating a current average value of the negative electrode according to the acquired current sampling value.
Further, the step S32 includes:
s321, judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not;
s322, judging whether the maximum current sampling value exceeds a second preset proportion of the total current;
s323, judging whether the minimum current sampling value is lower than a third preset proportion of the current average value;
and S324, judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
Compared with the prior art, the invention aims at the unipolar radio frequency equipment, under the unipolar mode, the technical scheme of the invention can ensure that the current density of the treated anode is high, the heat is concentrated, the temperature near the anode can exceed 60 ℃, or the cells can be instantaneously punctured; the current density of the negative electrode is low, the heating around the negative electrode is strictly controlled below 42 ℃, and irreversible burn to a patient is avoided.
Drawings
FIG. 1 is a block diagram of a medical RF device according to an embodiment;
fig. 2 is a schematic diagram of a shunt protection circuit of a loop electrode of a medical radio-frequency device provided in the first embodiment and the second embodiment;
fig. 3 is a flowchart of a shunt protection method for a loop electrode of a medical radio-frequency device according to a third embodiment.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The invention aims to overcome the defects of the prior art and provides a medical radio-frequency device and a shunt protection circuit and a shunt protection method of a loop electrode of the medical radio-frequency device.
Example one
The embodiment provides a medical radio frequency device, as shown in fig. 1, which includes a radio frequency device 1, a positive electrode 2, and a negative electrode plate 3, where the positive electrode 2 is connected to the positive electrode of the radio frequency device 1, and the negative electrode plate 3 is connected to the negative electrode of the radio frequency device 1; the negative plate 3 is provided with a plurality of negative electrodes 31 separated in a matrix manner.
In the present embodiment, each of the cathodes 31 separated in a matrix form is insulated from each other on the negative plate 3, and the lead of each of the cathodes 31 is connected to the radio frequency device 1.
Each negative electrode of the negative electrodes 31 is connected with an independent current sampling circuit, and the current sampling circuit realizes real-time sampling of the negative electrode current.
In use, the negative plates of the negative electrodes 31 of the radio frequency device are attached to the skin of the human body, such as the abdomen, the back, the thighs and the like, but not limited to these positions, and the treatment of the human tissue is realized by operating the positive electrodes.
This embodiment divides into a plurality of negative poles through with the negative plate, with negative pole current split, has solved radio frequency equipment negative pole current transition and has concentrated the problem that leads to unnecessary burn.
In this embodiment, the shunt overheat prediction and protection circuits of the cathodes 31 specifically include current sampling circuits 11, an adding circuit 12, a data processing module 13, a controller 14, and an alarm module 15; each current sampling circuit in the plurality of current sampling circuits is respectively connected with the addition circuit and the data processing module, the addition circuit is connected with the data processing module, and the controller is respectively connected with the data processing module and the warning module. As shown in fig. 2.
And the current sampling circuit 11 is used for collecting the current of the cathode connected with the current sampling circuit to obtain a current sampling value of the cathode, and transmitting the obtained current sampling value to the addition circuit and the data processing module.
Each current sampling circuit collects current sampling values of the negative electrode connected to the current sampling circuit, and at this time, N current sampling values are obtained, where N is 1,2,3 … …, and N.
And the adding circuit 12 is configured to receive the current sampling value transmitted by each current sampling circuit, calculate a total current of all cathodes by receiving each current sampling value, and transmit the calculated total current to the data processing module.
And when all the current sampling circuits send the acquired current sampling values to the adding circuit, the adding circuit adds the current sampling values of all the paths to obtain the total current value of all the cathodes in the negative plate, and sends the obtained total current value to the data processing module.
And the data processing module 13 is configured to receive the current sampling value transmitted by each current sampling circuit and the total current transmitted by the adding circuit, and determine whether each received current sampling value is within a preset range.
The data processing module comprises a computing unit and a comparing unit;
and the calculating unit is used for calculating a maximum current sampling value, a current intermediate value and a minimum current sampling value according to each received current sampling value and calculating a current average value of the negative electrode.
And receiving current sampling values transmitted by all the current sampling circuits, and screening out the maximum current sampling value, the minimum current sampling value and the middle current sampling value according to all the current sampling values.
And receiving the total current value transmitted by the addition circuit, and dividing the total current value by the number of the current sampling values to obtain the current average value of the negative electrode.
And the comparison unit is connected with the calculation unit and used for comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
Such as: divide into 4 negative plates, then can gather 4 corresponding current sampling values of negative pole earlier, obtain the maximum current sampling value and the minimum current sampling value in 4 current sampling values through the screening.
The specific comparison method comprises the following steps:
the first judging unit is used for judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not.
Assuming that the first predetermined ratio is 10%, the object of comparison is 10% of the total current.
If the minimum current sampling value is lower than 10% of the total current, indicating that the current of the negative electrode is unbalanced; if the minimum current sample is not less than 10% of the total current, the risk of burn is not considered to be present.
In order to more accurately judge whether the burn risk exists, all current sampling values can be compared with a first preset proportion of the total current. Such as: judging whether the current sampling value corresponding to each negative electrode in the 4 negative electrodes is lower than 10% of the total current or not, and if the current sampling value of one negative electrode is lower than 10% of the total current, determining that a burn risk exists; if none is below 10% of the total current, the risk of burn is considered to be absent.
And the second judging unit is used for judging whether the maximum current sampling value exceeds a second preset proportion of the total current or not.
Assuming that the second predetermined proportion is 50%, the object of comparison is 50% of the total current.
If the maximum current sampling value exceeds 50% of the total current, representing the cathode current excessive set; if the maximum current sample does not exceed 50% of the total current, the burn risk is not considered to be present.
In order to more accurately judge whether the burn risk exists, all current sampling values can be compared with a second preset proportion of the total current. Such as: judging whether the current sampling value corresponding to each negative electrode in the 4 negative electrodes exceeds 50% of the total current or not, and if the current sampling value of one negative electrode exceeds 50% of the total current, determining that a burn risk exists; if none of the total currents exceeds 50%, the risk of burns is considered to be absent.
And the third judging unit is used for judging whether the minimum current sampling value is lower than a third preset proportion of the current average value.
Assuming that the third predetermined proportion is 50%, 50% of the average current value of the objects to be compared is made.
If the minimum current sampling value is lower than 50% of the average current value, indicating that the cathode current is unbalanced; if the minimum current sample value is not less than 50% of the average current value, the burn risk is not considered to be present.
In order to more accurately judge whether the burn risk exists, all current sampling values can be compared with a third preset proportion of the average current value. Such as: judging whether the current sampling value corresponding to each negative electrode in the 4 negative electrodes is lower than 50% of the average current value or not, and if the current sampling value of one negative electrode is lower than 50% of the average current value, determining that a burn risk exists; if none is below 50% of the average current value, the burn risk is deemed not to be present.
And the fourth judging unit is used for judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
Assuming that the first preset ratio is 2 times, the object to be compared is 2 times the average current value.
If the maximum current sampling value exceeds 2 times of the average current value, the cathode current excessive set is represented; if the maximum current sample does not exceed 2 times the average current value, then the risk of burn is deemed to be absent.
In order to more accurately judge whether the burn risk exists, all current sampling values can be compared with the preset ratio of the average current value. Such as: judging whether the current sampling value corresponding to each of the 4 cathodes exceeds 2 times of the average current value or not, and if the current sampling value of one cathode exceeds 2 times of the average current value, determining that a burn risk exists; if none of the average current values exceeds 2 times the average current value, the burn risk is deemed not to be present.
And the controller 14 is configured to receive the data information processed by the data processing module 13, and when receiving any one or more of information that a current sampling value of one negative electrode is lower than a first preset proportion of the total current, a current sampling value of one negative electrode exceeds a second preset proportion of the total current, a current sampling value of one negative electrode is lower than a third preset proportion of the average current value, and a current sampling value of one negative electrode exceeds a fourth preset proportion of the average current value, the controller determines that a burn risk exists, and controls the warning module 15 to send warning information.
And the warning module 15 is used for sending out warning or closing output so as to remind an operator of paying attention.
Compared with the prior art, the embodiment has the following beneficial effects:
1. the protection circuit of the embodiment can prevent the skin of a body from being burnt due to overlarge local current density of the negative plate, and the negative level is divided into a plurality of negative levels to realize overheating protection;
2. the current of each cathode can be monitored in real time by arranging the current sampling circuit;
3. the monitored current is compared with a preset value through the data processing module, whether the current negative electrode has a burn risk or not can be predicted, and then an operator is reminded to prompt the operator to check, the negative electrode level is re-pasted or replaced, and a burn user is avoided.
Example two
The embodiment provides a shunt protection circuit for a loop electrode of medical radio frequency equipment, as shown in fig. 2, which includes a plurality of cathodes connected to radio frequency equipment, an adding circuit, and a data processing module; each negative electrode of the plurality of negative electrodes is connected with a current sampling circuit; the current sampling circuit is respectively connected with the addition circuit and the data processing module, and the addition circuit is connected with the data processing module;
the current sampling circuit 11 is used for collecting the current of the cathode connected with the current sampling circuit to obtain a current sampling value of the cathode, and transmitting the obtained current sampling value to the addition circuit and the data processing module;
the addition circuit 12 is used for receiving the current sampling value transmitted by each current sampling circuit, calculating the total current of all cathodes by receiving each current sampling value, and transmitting the calculated total current to the data processing module;
and the data processing module 13 is configured to receive the current sampling value transmitted by each current sampling circuit and the total current transmitted by the adding circuit, and determine whether each received current sampling value is within a preset range.
Further, the data processing module comprises a computing unit and a comparing unit;
the calculating unit is used for calculating a maximum current sampling value and a minimum current sampling value according to each received current sampling value;
and the comparison unit is connected with the calculation unit and used for comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
Further, the calculating unit is further configured to calculate a current average value of the negative electrode according to each received current sample value.
Further, the comparison unit includes:
the first judgment unit is used for judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not;
the second judgment unit is used for judging whether the maximum current sampling value exceeds a second preset proportion of the total current or not;
the third judging unit is used for judging whether the minimum current sampling value is lower than a third preset proportion of the current average value or not;
and the fourth judging unit is used for judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
Further, the device also comprises a controller 14 and an alarm module 15, wherein the controller is respectively connected with the data processing module and the alarm module; the controller is used for receiving the processing result of the data processing module and controlling the warning module to send out warning information.
It should be noted that the shunt protection circuit of the loop electrode of the medical radio frequency device provided in this embodiment is similar to the embodiment, and is not described herein again.
Compared with the prior art, the technical scheme of the embodiment can ensure that the current density of the treated anode is high, the heat is concentrated, the temperature near the anode can exceed 60 ℃, or the cells can be instantaneously broken down; the current density of the negative electrode is low, the heating around the negative electrode is strictly controlled below 42 ℃, and irreversible burn to a patient is avoided.
EXAMPLE III
The present embodiment provides a medical radio-frequency device and a shunt protection method for a loop electrode thereof, as shown in fig. 3, including:
s1, acquiring a current sampling value of a negative electrode connected with a current sampling circuit and acquired by a current sampling circuit;
s2, receiving the total current of all cathodes calculated by the addition circuit according to the acquired current sampling value;
and S3, judging whether each current sampling value is in a preset range or not according to the total current obtained by calculating the obtained current sampling values.
Further, the step S3 includes:
s31, calculating a maximum current sampling value and a minimum current sampling value in all current sampling values according to the acquired current sampling values;
and S32, comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
Further, the step S31 includes calculating a current average value of the negative electrode according to the acquired current sampling value.
Further, the step S32 includes:
s321, judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not;
s322, judging whether the maximum current sampling value exceeds a second preset proportion of the total current;
s323, judging whether the minimum current sampling value is lower than a third preset proportion of the current average value;
and S324, judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
It should be noted that the shunt protection method for the loop electrode of the medical radio frequency device provided in this embodiment is similar to that in the embodiment, and will not be described herein again.
Compared with the prior art, the technical scheme of the embodiment can ensure that the current density of the treated anode is high, the heat is concentrated, the temperature near the anode can exceed 60 ℃, or the cells can be instantaneously broken down; the current density of the negative electrode is low, the heating around the negative electrode is strictly controlled below 42 ℃, and irreversible burn to a patient is avoided.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A shunt protection circuit of a loop electrode of medical radio frequency equipment is characterized by comprising a plurality of cathodes, an adding circuit and a data processing module, wherein the cathodes are connected with the radio frequency equipment; each negative electrode of the plurality of negative electrodes is connected with a current sampling circuit; the current sampling circuit is respectively connected with the addition circuit and the data processing module, and the addition circuit is connected with the data processing module;
the current sampling circuit is used for collecting the current of the cathode connected with the current sampling circuit to obtain a current sampling value of the cathode and transmitting the obtained current sampling value to the addition circuit and the data processing module;
the addition circuit is used for receiving the current sampling value transmitted by each current sampling circuit, calculating the total current of all cathodes by receiving each current sampling value, and transmitting the calculated total current to the data processing module;
and the data processing module is used for receiving the current sampling value transmitted by each current sampling circuit and the total current transmitted by the addition circuit and judging whether each received current sampling value is in a preset range.
2. The shunt protection circuit of the loop electrode of the medical radio-frequency equipment as claimed in claim 1, wherein the data processing module comprises a computing unit and a comparing unit;
the calculating unit is used for calculating a maximum current sampling value and a minimum current sampling value according to each received current sampling value;
and the comparison unit is connected with the calculation unit and used for comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
3. The shunt protection circuit of a loop electrode of a medical radio-frequency device according to claim 2, wherein the calculating unit is further configured to calculate a current average value of the negative electrode according to each received current sample value.
4. The shunt protection circuit of the loop electrode of the medical radio-frequency equipment according to claim 3, wherein the comparison unit comprises:
the first judgment unit is used for judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not;
the second judgment unit is used for judging whether the maximum current sampling value exceeds a second preset proportion of the total current or not;
the third judging unit is used for judging whether the minimum current sampling value is lower than a third preset proportion of the current average value or not;
and the fourth judging unit is used for judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
5. The shunt protection circuit of the loop electrode of the medical radio-frequency equipment, according to claim 1, further comprising a controller and an alarm module, wherein the controller is respectively connected with the data processing module and the alarm module; the controller is used for receiving the processing result of the data processing module and controlling the warning module to send out warning information.
6. A medical radio frequency device comprises a radio frequency device and is characterized in that the radio frequency device is connected with a positive plate and a negative plate, and a plurality of negative plates which are separated in a matrix manner are arranged in the negative plate; the shunt protection circuit of the loop electrode of the medical radio-frequency equipment as claimed in any one of claims 1 to 5.
7. A medical radio frequency device and a shunt protection method of a loop electrode thereof are characterized by comprising the following steps:
s1, acquiring a current sampling value of a negative electrode connected with a current sampling circuit and acquired by a current sampling circuit;
s2, receiving the total current of all cathodes calculated by the addition circuit according to the acquired current sampling value;
and S3, judging whether each current sampling value is in a preset range or not according to the total current obtained by calculating the obtained current sampling values.
8. The method for shunt protection of a loop electrode of a medical radio-frequency device according to claim 7, wherein said step S3 includes:
s31, calculating a maximum current sampling value and a minimum current sampling value in all current sampling values according to the acquired current sampling values;
and S32, comparing whether the minimum current sampling value obtained by calculation is lower than a first preset threshold value or not and whether the maximum current sampling value exceeds a second preset threshold value or not.
9. The method for shunt protection of a loop electrode of a medical radio-frequency device according to claim 8, wherein said step S31 further comprises calculating a current average value of the negative electrode according to the obtained current sampling values.
10. The method for shunt protection of a loop electrode of a medical radio-frequency device according to claim 9, wherein said step S32 includes:
s321, judging whether the minimum current sampling value is lower than a first preset proportion of the total current or not;
s322, judging whether the maximum current sampling value exceeds a second preset proportion of the total current;
s323, judging whether the minimum current sampling value is lower than a third preset proportion of the current average value;
and S324, judging whether the maximum current sampling value exceeds a fourth preset proportion of the current average value.
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| CN202110154433.2A CN112971968A (en) | 2021-02-04 | 2021-02-04 | Medical radio frequency equipment and shunt protection circuit and method of loop electrode of medical radio frequency equipment |
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| CN202110154433.2A CN112971968A (en) | 2021-02-04 | 2021-02-04 | Medical radio frequency equipment and shunt protection circuit and method of loop electrode of medical radio frequency equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754757A (en) * | 1985-12-16 | 1988-07-05 | Peter Feucht | Method and apparatus for monitoring the surface contact of a neutral electrode of a HF-surgical apparatus |
| US5196008A (en) * | 1989-09-07 | 1993-03-23 | Siemens Aktiengesellschaft | Method and circuit for monitoring electrode surfaces at the body tissue of a patient in an hf surgery device |
| US20090036885A1 (en) * | 2007-08-01 | 2009-02-05 | Gregg William N | System and method for return electrode monitoring |
-
2021
- 2021-02-04 CN CN202110154433.2A patent/CN112971968A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754757A (en) * | 1985-12-16 | 1988-07-05 | Peter Feucht | Method and apparatus for monitoring the surface contact of a neutral electrode of a HF-surgical apparatus |
| US5196008A (en) * | 1989-09-07 | 1993-03-23 | Siemens Aktiengesellschaft | Method and circuit for monitoring electrode surfaces at the body tissue of a patient in an hf surgery device |
| US20090036885A1 (en) * | 2007-08-01 | 2009-02-05 | Gregg William N | System and method for return electrode monitoring |
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