CN113576656B - Method and device for detecting contact quality of polar plate and skin - Google Patents
Method and device for detecting contact quality of polar plate and skin Download PDFInfo
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- CN113576656B CN113576656B CN202110853461.3A CN202110853461A CN113576656B CN 113576656 B CN113576656 B CN 113576656B CN 202110853461 A CN202110853461 A CN 202110853461A CN 113576656 B CN113576656 B CN 113576656B
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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
- A61B18/14—Probes or electrodes therefor
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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
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00892—Voltage
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00898—Alarms or notifications created in response to an abnormal condition
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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
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/126—Generators therefor characterised by the output polarity bipolar
Abstract
The application relates to a method and a device for detecting contact quality of a pole plate and skin, wherein the method for detecting the contact quality of the pole plate and the skin comprises the following steps: acquiring a first voltage value of the first polar plate when the first polar plate is not in contact with the skin and a second voltage value when the first polar plate is completely in contact with the skin; obtaining a first function according to the first voltage value, the second voltage value and a linear function of the ratio of the contact area of the polar plate and the skin to the area of the polar plate along with the change of the polar plate voltage value; obtaining a first ratio of this time according to the obtained third voltage value of the first polar plate and the first function; judging the contact quality of the first polar plate and the skin according to the first ratio and a preset threshold value; the decision logic is configured to: if the first ratio is smaller than the preset threshold value, the contact quality of the first polar plate and the skin is abnormal; if the first ratio is larger than or equal to the preset threshold value, the contact quality of the first polar plate and the skin is normal. The method and the device have the effects of accurately judging the contact quality of the polar plate and the skin and improving the reliability of the judgment result.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a method and a device for detecting contact quality of a polar plate and skin.
Background
Currently, high-frequency surgical devices cut tissue or coagulate blood by outputting high-frequency high-voltage current. When the high-frequency operation equipment works, the electrotome is required to have cutting and blood coagulation effects, and the polar plate is used as a condition for forming a loop by current. The larger the contact area of the polar plate and the skin is, the smaller the impedance of the polar plate is, and the smaller the contact area of the polar plate and the skin is, the larger the impedance of the polar plate is. The existing polar plate is generally a bipolar plate, two polar plates of the polar plate are connected with two wires of the polar plate, the two wires are connected with two terminals of a polar plate interface of high-frequency operation equipment, and the contact area of the polar plate and the skin is judged by measuring the impedance of the two polar plates.
For the related technologies, the inventor thinks that the physical area of the finished pole plate is certain, and the surface of the pole plate is provided with conductive material glue which can be tightly attached to the skin, but the conductive glue on the surfaces of the pole plates of different manufacturers is different, and the impedance difference measured after the pole plates are attached to the surface of the skin is larger. The existing high-frequency operation equipment judges the contact quality of the pole plate and the skin by adopting a fixed impedance value, possibly identifies the state which does not reach the safe contact quality as the state which reaches the safe contact quality, and has the defect of the risk of scalding the skin when the high-frequency operation equipment works. .
Disclosure of Invention
In order to realize accurate judgment of the contact quality of the polar plate and the skin and improve the reliability of a judgment result, the application provides a method and a device for detecting the contact quality of the polar plate and the skin.
In a first aspect, the application provides a method for detecting contact quality between a polar plate and skin, which adopts the following technical scheme:
a method of detecting the quality of contact between a pad and skin, comprising: acquiring a first voltage value of a first polar plate when the first polar plate is not in contact with the skin and a second voltage value of the first polar plate when the first polar plate is completely in contact with the skin; the first polar plate is a polar plate which is currently connected with high-frequency operation equipment; according to the first voltage value, the second voltage value and a linear function of the ratio of the contact area of the first polar plate and the skin to the area of the first polar plate to the change of the voltage value of the first polar plate, a first function of the relation of the first ratio of the contact area of the first polar plate and the skin to the area of the first polar plate to the change of the voltage value of the first polar plate is obtained; obtaining the first ratio according to the voltage value of the first polar plate, which is obtained in real time in the working process of the high-frequency surgical equipment, of the first polar plate and the first function, which are obtained in real time in the working process of the high-frequency surgical equipment; judging the contact quality of the first polar plate and the skin according to the first ratio and a preset threshold value; the decision logic is configured to: if the first ratio is smaller than the preset threshold value, the contact quality of the first polar plate and the skin is abnormal; if the first ratio is larger than or equal to the preset threshold value, the contact quality of the first polar plate and the skin is normal.
By adopting the technical scheme, according to the first voltage value, the second voltage value and the linear function of the ratio of the contact area of the first polar plate and the skin to the area of the first polar plate along with the change of the voltage value of the first polar plate, the first function of the relation of the first ratio of the contact area of the first polar plate and the skin to the area of the first polar plate along with the change of the voltage value of the first polar plate is obtained, then according to the voltage value of the first polar plate and the first function which are obtained in real time in the working process of the high-frequency operation equipment, the first ratio of the contact area of the first polar plate and the skin to the area of the first polar plate is obtained, and the first ratio is compared with the preset threshold value to obtain the judgment of the contact quality of the first polar plate and the skin. The method and the device have the effects of accurately judging the contact quality of the polar plate and the skin and improving the reliability of the judgment result.
Optionally, the first voltage value, the second voltage value, and the voltage value of the first electrode plate obtained in real time in the working process of the high-frequency surgical device are obtained by an electrode plate detection circuit.
By adopting the technical scheme, the polar plate detection circuit is arranged, so that the first voltage value, the second voltage value and the voltage value of the first polar plate acquired in real time in the working process of the high-frequency operation equipment are acquired.
Optionally, the obtaining a first voltage value of the first plate when not in contact with the skin includes: starting the plate detection circuit when the first plate is not in contact with the skin; the polar plate detection circuit outputs detection voltage for detecting the fixed frequency of a first polar plate to the first polar plate; and collecting the voltages at the two ends of the first polar plate, performing analog-to-digital conversion on the collected voltages at the two ends of the first polar plate, and storing the converted voltage value as the first voltage value.
By adopting the technical scheme, the first voltage value is acquired and stored.
Optionally, obtaining a second voltage value of the first plate when the first plate is completely in contact with the skin includes:
when the first polar plate is completely contacted with the skin, the polar plate detection circuit is started; the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the polar plate to the first polar plate; and collecting the voltages at the two ends of the first polar plate, performing analog-to-digital conversion on the collected voltages at the two ends of the first polar plate, and storing the converted voltage value as the second voltage value.
By adopting the technical scheme, the second voltage value is acquired and stored.
Optionally, when the quality of the first pole plate contacting with the skin is abnormal, the high-frequency surgical device is controlled to stop outputting the high-frequency high-voltage current.
Through adopting above-mentioned technical scheme, when discovering unusually, stop to output high frequency high voltage current promptly, prevent the emergence of the scald condition.
Optionally, when the contact quality of the first polar plate and the skin is abnormal, an audible and visual prompt is given.
Through adopting above-mentioned technical scheme, the setting of reputation suggestion for remind the quality of staff's first polar plate and skin contact is unusual.
Optionally, the obtaining the first ratio of this time according to the voltage value of the first electrode plate, which is obtained in real time during the working process of the high-frequency surgical equipment, of the first electrode plate and the first function, which are obtained in real time during the working process of the high-frequency surgical equipment, further includes: judging whether the first ratio is the same as the first ratio at the last time; and if the first ratio of the current time is different from the first ratio of the last time, storing the first ratio of the current time as the first ratio of the last time, and judging the contact quality of the first polar plate and the skin according to the first ratio of the current time and a preset threshold value.
By adopting the technical scheme, whether the first ratio is the same as the first ratio at the last time is judged, so that whether the next judgment is needed or not is determined.
In a second aspect, the application provides a device for detecting contact quality between a polar plate and skin, and the following technical scheme is adopted:
an apparatus for detecting the quality of contact between a pad and skin, comprising: the polar plate detection circuit is used for detecting a first voltage value of a first polar plate when the first polar plate is not in contact with the skin, detecting a second voltage value of the first polar plate when the first polar plate is completely in contact with the skin and acquiring the voltage value of the first polar plate in real time in the working process of high-frequency surgical equipment in real time; the first polar plate is a polar plate which is currently connected with high-frequency operation equipment; the controller is used for obtaining a first function of the relation between the first ratio of the contact area of the first polar plate and the skin and the area of the first polar plate and the voltage value change of the first polar plate according to the first voltage value, the second voltage value and a linear function of the ratio of the contact area of the first polar plate and the skin to the area of the first polar plate and the voltage value change of the first polar plate; obtaining the first ratio according to the voltage value of the first polar plate obtained in real time in the working process of the high-frequency operation equipment and the first function, and judging the contact quality of the first polar plate and the skin according to the first ratio and a preset threshold; the decision logic is configured to: if the first ratio is smaller than the preset threshold value, the contact quality of the first polar plate and the skin is abnormal; if the first ratio is larger than or equal to the preset threshold value, the contact quality of the first polar plate and the skin is normal.
By adopting the technical scheme, the polar plate detection circuit is matched with the controller, so that the judgment on the contact quality of the detected polar plate and the skin is realized.
Optionally, the plate detecting circuit includes: the waveform generator is used for outputting detection voltage with fixed frequency and amplitude; a sampling transformer for receiving the detection voltage from the waveform generator from a primary side, inducing the detection voltage from a secondary side, and applying the detection voltage to two ends of the first polar plate; the impedance converter is used for acquiring the voltage value of the first polar plate from the primary side of the sampling transformer and converting the voltage value into a direct-current voltage value; and the AD converter is used for receiving the direct-current voltage value from the impedance converter, performing analog-to-digital conversion on the direct-current voltage value, and outputting a converted digital signal serving as the voltage value of the first polar plate to the controller.
By adopting the technical scheme, the polar plate detection circuit realizes the detection of the voltage value of the first polar plate by adopting the matching of the waveform generator, the sampling transformer, the impedance converter and the AD converter.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the method comprises the steps of obtaining a first function of the relation between the first ratio of the first polar plate to the skin contact area and the first polar plate area and the voltage value of the first polar plate according to the first voltage value, the second voltage value and the linear function of the ratio of the first polar plate to the skin contact area and the first polar plate area and the voltage value of the first polar plate, obtaining a first ratio of the first polar plate to the skin contact area and the first polar plate area according to the voltage value of the first polar plate and the first function which are obtained in real time in the working process of the high-frequency operation equipment, comparing the first ratio with a preset threshold value, and obtaining the judgment of the contact quality of the first polar plate and the skin. The method has the effects of realizing accurate judgment of the contact area of the polar plate and the skin and improving the reliability of the judgment result;
2. the polar plate detection circuit is matched with the controller to judge the contact quality of the detected polar plate and the skin.
Drawings
FIG. 1 is a flow chart of a method for detecting contact quality between a pad and skin in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an apparatus for detecting contact quality of a pad and skin in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below with reference to fig. 1-2 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the embodiment of the application, because the condition that the high-frequency surgical equipment detects the contact quality of the pole plate and the skin is judged, the detection is generally realized by detecting the voltage at two ends of the pole plate through a pole plate detection circuit. Generally, the detection polar plate that uses in the high frequency operation equipment generally is the bipolar plate polar plate, the pole piece openly is conducting material glue, the detection polar plate passes through the conducting resin laminating at human surface, prevent that the operation in-process detects the polar plate and drops, perhaps part drops, and, the detection polar plate is at the in-process with skin contact, according to detecting polar plate and skin area of contact, the impedance of detection polar plate can change, lead to the voltage real-time change at detection polar plate both ends, the controller acquires the vary voltage of the real-time change that detects through polar plate detection circuit, alright in order to detect the judgement of polar plate with skin contact quality to the voltage value of obtaining each time.
Referring to fig. 1, as an embodiment of the method for detecting the contact quality of the pad and the skin, the method for detecting the contact quality of the pad and the skin disclosed in this embodiment includes:
step S100, a first voltage value of the first polar plate when the first polar plate is not in contact with the skin and a second voltage value when the first polar plate is completely in contact with the skin are obtained.
The method comprises the steps that a first voltage value of a first polar plate when the first polar plate is not in contact with the skin is obtained, wherein the first polar plate refers to a polar plate which is currently connected with high-frequency surgical equipment, when the first polar plate is not in contact with the skin, a polar plate detection circuit is started, and the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the first polar plate to the first polar plate; and collecting the voltage at the two ends of the first polar plate, performing analog-to-digital conversion on the collected voltage at the two ends of the first polar plate, and storing the converted voltage value as a first voltage value, which is marked as X1.
Since the detection pad is not in contact with the skin at this time, the contact area of the first pad and the skin is considered to be 0% at this time.
Acquiring a second voltage value when the first polar plate is completely contacted with the skin, and starting the polar plate detection circuit when the first polar plate is completely contacted with the skin; the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the polar plate to the first polar plate; and collecting the voltage at the two ends of the first polar plate, performing analog-to-digital conversion on the collected voltage at the two ends of the first polar plate, and storing the converted voltage value as a second voltage value, which is marked as X2. Since the detection pad is now in full contact with the skin, the contact area of the first pad and the skin is considered to be 100% at this time.
Step S200, according to the first voltage value, the second voltage value and a linear function of the ratio of the contact area of the first pole plate and the skin to the area of the first pole plate to the voltage value of the first pole plate, the first function of the relation of the first ratio of the contact area of the first pole plate and the skin to the area of the first pole plate to the voltage value of the first pole plate is obtained.
The linear function of the ratio of the plate voltage value to the skin contact area to the plate area as the plate voltage value changes is as follows: y = kX + b, and by substituting X = X1, Y =0 and X = X2, Y =1 into Y = kX + b, the specific values of the coefficients k and b can be found, thereby obtaining a linear function of the ratio of the voltage value of the first plate to the skin contact area and the area of the first plate as a function of the voltage value of the first plate.
The specific calculation process is as follows: when the contact area of the first plate and the skin is 0%, the first voltage value is X1, that is, 0= x1 × k + b; when the contact area of the first plate and the human body is 100%, the second voltage value is X2, and 1= X2 × k + b is obtained. From these two equations, k = 1/(X2-X1), b =1 × X1/(X1-X2) can be calculated, and the relation between k and b is substituted into Y = kX + b, so as to obtain a linear function of the ratio of the voltage value of the first plate to the skin contact area and the area of the first plate as a function of the voltage value of the first plate: y = (X-X1)/(X2-X1).
Step S300, obtaining a current first ratio according to a voltage value of a first polar plate, obtained in real time in the working process of the high-frequency operation equipment, of the first polar plate, and a first function, obtained in real time in the working process of the high-frequency operation equipment;
in this embodiment, the voltage value of the first electrode plate obtained in real time in the working process of the high-frequency surgical device is obtained in real time through the electrode plate detection circuit in the working process of the high-frequency surgical device, and is denoted as X3 here, it should be noted that, in the working process of the high-frequency surgical device, the first electrode plate may move, so that a ratio of a contact area between the first electrode plate and the skin to an area of the first electrode plate changes in real time along with the voltage value of the first electrode plate.
And for each detected third electrode voltage value X3, the detected third electrode voltage value is brought into Y = (X-X1)/(X2-X1), and at the moment, Y = (X3-X1)/(X2-X1), so that the value of Y, namely the current first ratio, can be obtained.
It should be noted that, after the first ratio is obtained, a judgment needs to be made to determine whether the first ratio is the same as the first ratio at the previous time; if the voltage values are the same, the voltage values of the first polar plate, which are acquired in real time in the working process of the high-frequency operation equipment next time, are directly acquired without storage; and if the current first ratio is different from the previous first ratio, storing the current first ratio as the previous first ratio, and judging the contact quality of the first polar plate and the skin according to the current first ratio.
Step S400, judging the contact quality of the first polar plate and the skin according to the first ratio and a preset threshold; here, the first ratio is set as M, the preset threshold is set as N, and if the first ratio is smaller than the preset threshold, that is, M < N, step S401 is executed; otherwise, if the first ratio is greater than or equal to the preset threshold, that is, M > = N, step S402 is executed.
Step S401, outputting that the contact quality of the first polar plate and the skin is abnormal;
and step S402, outputting that the contact quality of the first polar plate and the skin is normal.
In the embodiment, the quality of the contact between the first polar plate and the skin is judged according to the first ratio and a preset threshold, if the first ratio is smaller than the preset threshold, the quality of the contact between the first polar plate and the skin is abnormal, the high-frequency surgical equipment is controlled to stop outputting the high-frequency high-voltage current, and an acousto-optic prompt is given to remind a worker; because the quality of the contact between the first polar plate and the skin is abnormal, the high-frequency operation equipment can not work at the moment, and the skin can be damaged. If the first ratio is larger than or equal to the preset threshold value, the quality of the contact between the first polar plate and the skin is normal, and at the moment, the high-frequency operation equipment can work normally.
The preset threshold is uncertain, and under normal conditions, the preset threshold is set to be 50%, namely when the first ratio is less than 50%, the high-frequency operation stops working, and meanwhile, an audible and visual alarm is given out; however, since various conditions may occur during the operation, the preset threshold value may be adjusted in real time, and thus, the determination of the preset threshold value may be determined according to the conditions, and there is no fixed standard temporarily.
The embodiment of the application also discloses a device for detecting the contact quality of the polar plate and the skin, which is applied to a system for detecting the contact quality of the polar plate and the skin, and referring to fig. 2, the device comprises: a plate detection circuit 100 and a controller 200.
The plate detection circuit 100 includes: a waveform generator 101, a driver 102, a sampling transformer 103, an impedance converter 104, and an AD converter 105. The output terminal of the waveform generator 101 is coupled to the input terminal of the driver 102, and the output terminal of the driver 102 is coupled to the input terminal of the sampling transformer 103; the waveform generator 101 is used for outputting detection voltage with fixed frequency and amplitude; the driver 102 receives the detection voltage from the waveform generator 101 and transmits the detection voltage to the sampling transformer 103, where it should be noted that, because the sampling transformer 103 needs a slightly larger current, and the waveform generator 101 is a circuit mainly including a chip and a slightly smaller current, the driver 102 needs to be driven to enable the sampling transformer 103 to operate normally. The sampling transformer 103 is configured to receive a detection voltage from the driver 102 from the primary side, sample a secondary side of the transformer 103 to obtain the detection voltage, and apply the detection voltage to the two ends of the first pole plate, where the sampling transformer 103 is a transformer with a winding turns ratio of 1 n, and since a ratio of the number of turns of the primary winding to the number of turns of the secondary winding of the transformer is equal to a ratio of a voltage applied to the primary winding to a voltage induced to the two ends of the secondary winding, voltages at two ends of the sampling transformer 103 constantly maintain a certain proportional relationship.
The input terminal of the impedance transformer 104 is coupled to the primary of the sampling transformer 103, and is configured to obtain a voltage value of the first plate from the primary of the sampling transformer 103 and convert the voltage value of the first plate into a dc voltage value. The output terminal of the impedance converter 104 is coupled to the input terminal of the AD converter 105, and is configured to receive the dc voltage value from the impedance converter 104, perform analog-to-digital conversion on the dc voltage value, and output the converted digital signal to the controller 200 as the voltage value of the first plate.
The plate detection circuit 100 is configured to detect a first voltage value of the first plate when the first plate is not in contact with the skin, a second voltage value of the first plate when the first plate is completely in contact with the skin, and a voltage value of the first plate acquired in real time during the working process of the high-frequency surgical device, where the voltage value of the first plate is acquired in real time during the working process of the high-frequency surgical device.
The input end of the controller 200 is coupled to the output end of the AD converter 105, and is configured to obtain a first function of a relationship between the first ratio of the first electrode plate-to-skin contact area and the first electrode plate area and the voltage value of the first electrode plate according to the first voltage value, the second voltage value, and the linear function of the ratio of the first electrode plate-to-skin contact area to the first electrode plate area, which changes with the voltage value of the first electrode plate, and obtain the first ratio of this time according to the voltage value of the first electrode plate and the first function, which are obtained in real time during the working process of the high-frequency surgical device, and determine the quality of the first electrode plate in contact with the skin according to the first ratio and a preset threshold, where if the first ratio is smaller than the preset threshold, the quality of the first electrode plate in contact with the skin is abnormal; if the first ratio is larger than or equal to the preset threshold value, the contact quality of the first polar plate and the skin is normal.
The operation steps of the embodiment of the application are as follows: detecting a first voltage value when the first polar plate is not contacted with the skin through a polar plate detection circuit, and pressing an 'initial' key in the high-frequency operation equipment to realize the storage of the first voltage value; detecting a second voltage value when the first polar plate is completely contacted with the skin through the polar plate detection circuit, and realizing the storage of the second voltage value by pressing a 'set' key in the high-frequency operation equipment; obtaining a first function of the relation between the first ratio of the contact area of the first polar plate and the skin and the area of the first polar plate and the voltage value change of the first polar plate according to the first voltage value, the second voltage value and the linear function of the ratio of the contact area of the first polar plate and the skin and the area of the first polar plate along with the voltage value change of the first polar plate; the method comprises the steps of detecting the voltage value of a first polar plate of the current high-frequency operation equipment in the working process in real time through a polar plate detection circuit, obtaining the ratio of the contact area of the first polar plate and skin to the polar plate area through the voltage value of the first polar plate obtained in real time in the working process of the high-frequency operation equipment and a first function, and comparing the first ratio with a preset threshold value, so that the judgment of the contact quality of the first detection polar plate and the skin is obtained. The method has the effects of realizing accurate judgment of the contact quality of the polar plate and the skin and improving the reliability of a judgment result.
The foregoing is a preferred embodiment of the present application and is not intended to limit the scope of the application in any way, and any features disclosed in this specification (including the abstract and drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Claims (6)
1. A method of detecting the quality of contact between a pad and skin, comprising:
acquiring a first voltage value of a first polar plate when the first polar plate is not in contact with the skin and a second voltage value of the first polar plate when the first polar plate is completely in contact with the skin; the first polar plate is a polar plate which is currently connected with high-frequency operation equipment; the first voltage value is the voltage value of the first polar plate when the first polar plate is not contacted with the skin; the second voltage value is the voltage value of the first polar plate when the first polar plate is completely contacted with the skin;
obtaining a first function of the relation between the contact area of the first polar plate and the skin and the area of the first polar plate along with the change of the voltage value of the first polar plate according to the first voltage value, the second voltage value and a linear function of the ratio of the contact area of the first polar plate and the skin to the area of the first polar plate along with the change of the voltage value of the first polar plate; the linear function is Y = kX + b; wherein, X is the voltage value of the polar plate, and Y is the ratio of the contact area of the polar plate and the skin to the area of the polar plate; bringing X = X1, Y =0 and X = X2, Y =1 into Y = kX + b, and solving specific values of coefficients k and b, thereby obtaining a first function of the ratio of the voltage value of the first plate to the skin contact area and the area of the first plate as the voltage value of the first plate changes, wherein X1 is the first voltage value, and X2 is the second voltage value;
obtaining a first ratio of this time according to the voltage value of the first polar plate obtained in real time in the working process of the high-frequency surgical equipment and the first function, wherein the first ratio is the ratio of the contact area of the first polar plate and the skin to the area of the first polar plate based on the first function when the voltage at two ends of the first polar plate is the voltage value of the first polar plate obtained in real time in the working process of the high-frequency surgical equipment;
judging the contact quality of the first polar plate and the skin according to the first ratio and a preset threshold; the decision logic is configured to:
if the first ratio is smaller than the preset threshold value, the contact quality of the first polar plate and the skin is abnormal;
if the first ratio is larger than or equal to the preset threshold value, the contact quality of the first polar plate and the skin is normal;
the first voltage value, the second voltage value and the voltage value of the first polar plate obtained in real time in the working process of the high-frequency surgical equipment are obtained through a polar plate detection circuit;
acquiring a first voltage value of the first plate when not in contact with skin comprises:
starting the plate detection circuit when the first plate is not in contact with the skin;
the polar plate detection circuit outputs detection voltage for detecting the fixed frequency of the first polar plate to the first polar plate;
receiving a direct current voltage value from the impedance converter, performing analog-to-digital conversion on the direct current voltage value, and storing the converted voltage value as the first voltage value;
acquiring a second voltage value of the first plate when fully in contact with the skin, comprising:
when the first polar plate is completely contacted with the skin, the polar plate detection circuit is started;
the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the polar plate to the first polar plate;
receiving a direct current voltage value from the impedance converter, performing analog-to-digital conversion on the direct current voltage value, and storing the converted voltage value as the second voltage value of the first pole plate;
the step of acquiring the voltage value of the first polar plate acquired in real time in the working process of the high-frequency surgical equipment comprises the following steps:
the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the polar plate to the first polar plate;
and receiving the direct current voltage value from the impedance converter, performing analog-to-digital conversion on the direct current voltage value, and storing the converted voltage value as the voltage value of the first polar plate acquired by the first polar plate in real time in the working process of the high-frequency surgical equipment.
2. The method for detecting the contact quality of the plate and the skin as claimed in claim 1, wherein when the contact quality of the first plate and the skin is abnormal, the high-frequency surgical equipment is controlled to stop outputting the high-frequency high-voltage current.
3. The method of claim 1, wherein an audible and visual cue is issued when the first plate is in contact with the skin at an abnormal mass.
4. The method of claim 1, wherein obtaining the current first ratio according to the voltage value of the first plate and the first function obtained in real time during the operation of the high-frequency surgical device further comprises:
judging whether the first ratio is the same as the first ratio at the last time or not;
if the first ratio is different from the first ratio at the last time, the first ratio at the last time is stored as the first ratio at the last time, and the contact quality of the first pole plate and the skin is judged according to the first ratio at the last time and a preset threshold value.
5. An apparatus for detecting the quality of contact between a pad and skin, comprising:
the polar plate detection circuit is used for detecting a first voltage value of a first polar plate when the polar plate is not contacted with the skin, detecting a second voltage value of the first polar plate when the polar plate is completely contacted with the skin and acquiring the voltage value of the first polar plate in real time in the working process of high-frequency surgical equipment; the first polar plate is a polar plate which is currently connected with high-frequency operation equipment; the first voltage value is the voltage value of the first polar plate when the first polar plate is not contacted with the skin; the second voltage value is the voltage value of the first polar plate when the first polar plate is completely contacted with the skin; acquiring a first voltage value of the first plate when not in contact with skin comprises:
when the first polar plate is not contacted with the skin, starting the polar plate detection circuit;
the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the first polar plate to the first polar plate;
receiving a direct current voltage value from the impedance converter, performing analog-to-digital conversion on the direct current voltage value, and storing the converted voltage value as the first voltage value;
acquiring a second voltage value of the first plate when fully in contact with the skin, comprising:
when the first polar plate is completely contacted with the skin, the polar plate detection circuit is started;
the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the polar plate to the first polar plate;
receiving a direct current voltage value from the impedance converter, performing analog-to-digital conversion on the direct current voltage value, and storing the converted voltage value as the second voltage value;
the controller is used for obtaining a first function of the relation between the first ratio of the contact area of the first polar plate and the skin and the area of the first polar plate and the voltage value of the first polar plate according to the first voltage value, the second voltage value and a linear function of the ratio of the contact area of the first polar plate and the skin and the area of the first polar plate along with the voltage value of the first polar plate; the linear function is Y = kX + b; wherein X is the voltage value of the polar plate, and Y is the ratio of the contact area of the polar plate and the skin to the area of the polar plate; bringing X = X1, Y =0 and X = X2, Y =1 into Y = kX + b, and solving specific values of coefficients k and b, thereby obtaining a first function of the ratio of the voltage value of the first plate to the skin contact area and the area of the first plate as the voltage value of the first plate changes, wherein X1 is the first voltage value, and X2 is the second voltage value; and the number of the first and second groups,
obtaining a first ratio of this time according to the voltage value of the first polar plate obtained in real time in the working process of the high-frequency surgical equipment and the first function, and judging the contact quality of the first polar plate and the skin according to the first ratio and a preset threshold, wherein the first ratio is the ratio of the contact area of the first polar plate and the skin to the area of the polar plate when the voltage at two ends of the first polar plate is the voltage value of the first polar plate obtained in real time in the working process of the high-frequency surgical equipment; the decision logic is configured to:
if the first ratio is smaller than the preset threshold value, the contact quality of the first polar plate and the skin is abnormal;
if the first ratio is larger than or equal to the preset threshold value, the contact quality of the first polar plate and the skin is normal;
the step of acquiring the voltage value of the first polar plate acquired in real time in the working process of the high-frequency surgical equipment comprises the following steps:
the polar plate detection circuit outputs detection voltage with fixed frequency for detecting the polar plate to the first polar plate;
and receiving a direct-current voltage value from the impedance converter, performing analog-to-digital conversion on the direct-current voltage value, and storing the converted voltage value as a voltage value of the first pole plate acquired by the first pole plate in real time in the working process of the high-frequency surgical equipment.
6. The apparatus of claim 5, wherein the pad detection circuit comprises:
the waveform generator is used for outputting detection voltage with fixed frequency and amplitude;
a sampling transformer for receiving the detection voltage from the waveform generator from a primary side, inducing the detection voltage from a secondary side, and applying the detection voltage to two ends of the first polar plate;
the impedance converter is used for acquiring the voltage of the first polar plate from the primary side of the sampling transformer and converting the voltage into direct-current voltage;
and the AD converter is used for receiving the direct-current voltage from the impedance converter, performing analog-to-digital conversion on the direct-current voltage, and outputting a converted digital signal serving as a voltage value of the first plate to the controller.
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