CN116407247A - Flow rate control method, electronic device and computer readable storage medium - Google Patents
Flow rate control method, electronic device and computer readable storage medium Download PDFInfo
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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
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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
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
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Abstract
A flow rate control method, an electronic device, and a computer-readable storage medium, wherein the method comprises: acquiring impedance data and temperature data of an operation position of a radio frequency operation object in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; and adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature. The flow velocity of the cooling medium can be adjusted in time by adjusting the change parameters of the impedance and the change parameters of the temperature together.
Description
Technical Field
The embodiments of the present application relate to the field of data processing technologies, and in particular, to a flow rate control method, an electronic device, and a computer readable storage medium.
Background
In the radio frequency ablation, a radio frequency probe enters an operation position of a radio frequency operation object under image guidance, a radio frequency host sends radio frequency energy to be applied to the operation position, and ablation is completed at the operation position. In the radio frequency ablation process, a delivery device such as a syringe pump is generally used to deliver a cooling medium (such as physiological saline) to an operation position, and the temperature of the operation position can be adjusted by controlling the flow rate of the cooling medium.
In the related art, the flow rate of the cooling medium is generally adjusted according to the change in impedance of the operation position. However, in the early stage of ablation, the impedance change of the operation position is not large, but the temperature rises rapidly, so that the flow rate of the cooling medium cannot be controlled in time only according to the impedance change.
Disclosure of Invention
According to the flow rate control method, the electronic device and the computer readable storage medium, the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter.
In one aspect, an embodiment of the present application provides a flow rate control method, where the method includes:
acquiring impedance data and temperature data of an operation position of a radio frequency operation object in real time;
obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data;
and adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature.
In one aspect, an embodiment of the present application further provides a flow rate control device, including:
the acquisition module is used for acquiring impedance data and temperature data of the operation position of the radio frequency operation object in real time;
the calculation module is used for obtaining the change parameters of the impedance according to the impedance data and obtaining the change parameters of the temperature according to the temperature data;
And the control module is used for adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature.
An aspect of an embodiment of the present application further provides an electronic device, including: a memory and a processor;
the memory stores executable program code;
the processor, coupled to the memory, invokes the executable program code stored in the memory to perform the flow rate control method as provided by the above embodiments.
An aspect of the embodiments of the present application also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a flow rate control method as provided by the above embodiments.
According to the embodiments, the impedance data and the temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, it being obvious that the drawings in the following description are some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is an application environment diagram of a radio frequency ablation operation provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a radiofrequency operating catheter tip in a radiofrequency ablation device according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating an implementation of a flow rate control method according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a flow rate control device according to an embodiment of the present disclosure;
fig. 5 is a schematic hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of an application scenario of radio frequency operation ablation operation provided in an embodiment of the present application. The RF host 10 is connected to the syringe pump 20, the neutral electrode 30, and the RF operating catheter 40.
Specifically, before performing the operation task, first, the energy emitting end of the rf operation catheter 40 for generating and outputting rf energy and an extension tube (not shown) of the syringe pump 20 are inserted into the operation subject 50 (e.g., an abnormal tissue mass). Then, the neutral electrode 30 is brought into contact with the surface of the operation object 50. Radio frequency current flows through the radio frequency operation catheter 40, the operation object 50, and the neutral electrode 30, thereby forming a loop.
When the operation task is triggered, the rf host 10 controls the rf operation catheter 40 to output rf energy to the operation site by means of discharging, so as to perform rf operation on the operation site. Meanwhile, the syringe pump 20 performs a pouring operation on the operation subject through the extension tube, and pours a cooling medium (e.g., physiological saline) into the operation site to adjust the impedance and temperature of the operation site.
Referring to fig. 3, fig. 3 is a flowchart illustrating an implementation of a flow rate control method according to an embodiment of the present application. The method may be implemented by the rf host 10 in fig. 1, or other computer terminals connected to the rf host 10, and for convenience of explanation, the following embodiments use the rf host 10 as an execution body. As shown in fig. 3, the method specifically includes:
step S301, impedance data and temperature data of the operation position of the rf operation object 50 are obtained in real time.
As shown in fig. 2, the probes 41 are disposed around the central electrode 42 at the top end of the rf operation catheter 40 for outputting rf energy, and are respectively located on different planes to form a claw structure together, and each probe is provided with a physical characteristic data (such as temperature data and impedance data) acquisition device for acquiring physical characteristic data of a pricking or touching position.
Specifically, when the rf host 10 controls the rf operation catheter 40 to perform rf operation, the probe contacts the operation position of the rf operation object 50 along with the center electrode.
The rf operation object 50 refers to any object or target that can perform rf operations such as rf ablation, for example, when rf operations are rf ablations, the rf operation object may be a living tissue, and the operation position may be abnormal tissue on the living tissue.
Step S302, obtaining the change parameters of the impedance according to the impedance data, and obtaining the change parameters of the temperature according to the temperature data.
In the embodiment of the application, the change parameters of the impedance include, but are not limited to, the impedance growth rate in a preset time interval, and the slope of an impedance curve in the preset time interval. The temperature variation parameters include, but are not limited to, the slope of the temperature profile over a preset time interval.
Step S303, adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature.
In this embodiment, according to the impedance variation parameter and the temperature variation parameter, the cooling medium may be adjusted to a preset flow rate value, and the flow rate of the cooling medium may be increased according to a preset speed-up value or decreased according to a preset speed-down value on the current flow rate value.
According to the embodiment of the application, the impedance data and the temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter.
In an embodiment of the present application, adjusting the flow rate of the cooling medium according to the change parameter of the impedance and the change parameter of the temperature includes:
s401, comparing the change parameter of the impedance with a preset impedance parameter to obtain a first comparison result.
In this embodiment, the preset impedance parameters include, but are not limited to, a preset impedance surge gradient value, and a preset impedance deceleration threshold. The first comparison result includes, but is not limited to, a variation parameter of the impedance being greater than, equal to, or less than a preset impedance parameter, for example, an impedance increase rate within a preset time interval being greater than, equal to, or less than a preset impedance surge gradient value, and an impedance slope within the preset time interval being greater than, equal to, or less than a preset impedance deceleration threshold.
S402, comparing the temperature change parameter with a preset temperature parameter to obtain a second comparison result.
In this embodiment, the preset temperature parameters include, but are not limited to, a preset temperature acceleration threshold, a preset temperature deceleration threshold. The second comparison result includes, but is not limited to, a temperature change parameter that is greater than, equal to, or less than a preset temperature parameter, e.g., a temperature curve slope that is greater than, equal to, or less than a temperature acceleration threshold for a preset time interval.
S403, adjusting the flow rate of the cooling medium according to the first comparison result and the second comparison result.
In this embodiment, according to the first comparison result and the second comparison result, the cooling medium may be adjusted to a preset flow rate value, or the flow rate of the cooling medium may be increased by a preset speed-up value, or the flow rate of the cooling medium may be decreased by a preset speed-down value.
In one embodiment, the defined impedance change parameter, the preset impedance parameter, the temperature change parameter, and the preset temperature parameter may be the same or different for both the determination of whether to increase the flow rate of the cooling medium and the determination of whether to decrease the flow rate of the cooling medium.
In an embodiment of the present application, adjusting the flow rate of the cooling medium according to the first comparison result and the second comparison result includes:
S501, if the first comparison result is that the variation parameter of the impedance is larger than the preset impedance parameter, increasing the flow velocity of the cooling medium to a preset flow velocity value.
S502, if the first comparison result is that the change parameter of the impedance is smaller than or equal to the preset impedance parameter, and the second comparison result is that the change parameter of the temperature is larger than the preset temperature parameter, increasing the flow velocity of the cooling medium according to the preset speed increasing value.
In one embodiment, increasing the flow rate of the cooling medium may include both coarse and fine phases. The coarse adjustment may be to directly increase the flow rate of the cooling medium to one of a plurality of preset flow rate values, for example, in the manner of step S501; the fine adjustment may be to increase the flow rate of the cooling medium by a preset increase value, for example, in the manner of step S502 described above.
In this embodiment, the impedance change parameter is an impedance increase rate within a preset time interval, and the preset impedance parameter is a preset impedance surge gradient value. The calculation formula of the impedance growth rate in the preset time interval is as follows:
wherein K is R Is the impedance increase rate within a preset time interval, R 2 Is the current impedance value, R 1 The measurement time interval between the current impedance value and the last impedance value is a preset time interval.
Alternatively, the preset flow rate value may be a fixed value, for example fixed at 1ml/min, 2ml/min, 3ml/min, or the like. Alternatively, in another embodiment, there may be a plurality of preset flow rate values, and different preset flow rate values may be selected under different conditions, which are specifically described in connection with steps S601-S603 and table 1 below, and are not described herein again.
In this embodiment, if it is determined that the variation parameter of the impedance is greater than the preset impedance parameter, the flow rate of the cooling medium is directly increased to the preset flow rate. If the change parameter of the impedance is smaller than or equal to the preset impedance parameter, the change parameter of the temperature is compared with the preset temperature parameter again, and a second comparison result is obtained.
In this embodiment, the temperature change parameter is a slope of a temperature curve within a preset time interval, and the preset temperature parameter is a preset temperature acceleration threshold. Slope of temperature curve within preset time interval
Wherein K is T Is the slope of the temperature curve within a preset time interval, T 2 Is the current temperature value, T 1 Is the last temperature value and t is a preset time interval. Alternatively, the preset acceleration value may be a fixed value, for example fixed at 0.1ml/min, 0.2ml/min, 0.3ml/min, or the like.
Exemplary, when the preset time interval is 0.2s, whenThe front impedance value is 400 omega, the last impedance value is 380 omega, the impedance surge gradient value is 5%, and the preset flow rate value is 2ml/min. Impedance increase rate within a preset time interval
Impedance increase rate K within preset time interval R And the flow rate of the cooling medium is adjusted to be 2ml/min according to the condition that the change parameter of the impedance is larger than the preset impedance parameter as a first comparison result and is larger than the impedance surge gradient value by 5%.
When the preset time interval is 0.5s, the current impedance value is 400 omega, the last impedance value is 390 omega, the impedance rapid increase gradient value is 5%, the preset flow speed value is 2ml/min, the current temperature value is 38 ℃, the last temperature value is 36 ℃, the preset temperature increase threshold value is 2, and the preset increase value is 0.1ml/min. Impedance increase rate within a preset time interval
Impedance increase rate K within preset time interval R And if the temperature gradient is smaller than the impedance surge gradient value by 5%, comparing the slope of the temperature curve with a preset temperature acceleration threshold. Calculating to obtain the slope of the temperature curve in the preset time interval
The slope of the temperature curve within the preset time interval is greater than 2. It can be seen that the above situation meets the condition that the first comparison result is that the variation parameter of the impedance is smaller than or equal to the preset impedance parameter, and the second comparison result is that the variation parameter of the temperature is larger than the preset temperature parameter, so that the flow rate of the cooling medium can be increased according to the preset speed increasing value of 0.1ml/min.
In this embodiment, comparing the variation parameter of the impedance with the preset impedance parameter to obtain the first comparison result may include the following steps S601-S602:
s601, acquiring a currently set flow velocity index number.
In one embodiment, the flow index number is a preset value in a preset sequence.
Optionally, the flow rate index number is a preset value in a preset sequence, the preset sequence may include a plurality of different preset values, each preset value corresponds to an impedance parameter and a flow rate value, and the flow rate values corresponding to each preset value are increased according to the sequence of the preset values in the preset sequence.
As shown in table 1 below, the preset sequence number may include 10 preset values of 1, 2, 3. And according to the order of the preset values in the preset sequence, the preset flow rate value corresponding to each preset value is increased, for example, the preset flow rate value corresponding to the preset value 1 is 0.5ml/min, the preset flow rate value corresponding to the preset value 2 is 0.7ml/min, and the like.
Of course, the preset values included in the preset serial numbers may be other forms, for example, may be in the form of characters or character strings, for example, A, B, c.
In one embodiment, when the method of this embodiment is first performed, the flow index number may be the first preset value in the preset sequence, for example, 1 in table 1. During subsequent execution, the flow index number may modify the settings, e.g., the flow index number may be adjusted as per step S604.
S602, obtaining an impedance parameter corresponding to the currently set flow velocity index number, and comparing the change parameter of the impedance with the obtained impedance parameter to obtain a first comparison result.
It should be noted that, the impedance parameter corresponding to the current flow rate index number is the impedance parameter corresponding to the preset value of the flow rate index number. For example, if the flow index number is a preset value 1 in the preset sequence, the corresponding impedance parameter is an impedance parameter corresponding to the preset value 1. Similarly, the preset flow rate value corresponding to the currently set flow rate index number described below is also the preset flow rate value corresponding to the preset value of the value taken by the flow rate index number. For example, if the flow index number is a preset value 1 in the preset sequence, the corresponding preset flow value is a preset flow value corresponding to the preset value 1. And will not be described in detail later.
In one embodiment, the variable parameter of the impedance may include a length rate of the impedance over a preset time interval. Correspondingly, the impedance parameter corresponding to the flow rate index number may be the impedance surge gradient shown in table 1.
It should be noted that, here, the impedance parameter corresponding to the currently set flow rate index number may be used as a preset impedance parameter, so that the variation parameter of the impedance may be compared with the preset impedance parameter to obtain the first comparison result.
In this embodiment, increasing the flow rate of the cooling medium to the preset flow rate value may include the following step S603:
s603, acquiring a flow velocity value corresponding to the currently set flow velocity index number, and increasing the flow velocity of the cooling medium to the acquired flow velocity value.
In this embodiment, the preset values in the preset sequence may be set to flow rate index numbers having a sequential relationship, for example: 1. 2, 3, 4, 5, 6. Each flow velocity index number is correspondingly provided with an impedance surge gradient value and a preset flow velocity value, as shown in table 1.
TABLE 1
| Flow velocity index number | Impedance surge gradient value | Preset flow rate value |
| 1 | 5％ | 0.5ml/min |
| 2 | 5％ | 0.7ml/min |
| 3 | 10％ | 0.9ml/min |
| 4 | 10％ | 1.1ml/min |
| 5 | 10％ | 1.2ml/min |
| 6 | 5％ | 1.4ml/min |
| 7 | 5％ | 1.6ml/min |
| 8 | 5％ | 1.8ml/min |
| 9 | 5％ | 1.9ml/ |
| 10 | 5％ | 2.0ml/min |
As shown in table 1, in this embodiment, the current impedance value is 400 Ω and the previous impedance value is 380 Ω at a preset time interval of 0.2s, and if the current flow rate index number is "2", it can be determined that the impedance surge gradient value corresponding to the flow rate index number "2" is 5%. Based on this The impedance increase rate within the preset time interval can be adjusted
And comparing the impedance increment gradient value with the impedance increment gradient value of 5%, and obtaining a first comparison result that the impedance increment rate in a preset time interval is larger than the impedance increment gradient value. Thus, it is possible to obtain a preset flow rate value of 0.7ml/min corresponding to the currently set flow rate index number "2" and adjust the flow rate value of the cooling medium to 0.7ml/min.
In one embodiment, after adjusting the flow rate of the cooling medium to the obtained flow rate value, the method further includes:
s604, setting the flow velocity index number as the next preset value in the preset sequence.
Taking the current setting of the flow velocity index number of "2" as an example, after the flow velocity of the cooling medium is adjusted to the obtained preset flow velocity value, the flow velocity index number is set to the next preset value of "3" in the preset sequence.
According to the embodiment of the application, the impedance data and the temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter. After the flow rate is adjusted in time, the conditions of too fast carbonization, tissue adhesion, impedance surge and the like of the operation position due to the too high temperature can be reduced, the frequency of actively stopping ablation of the radio frequency ablation product due to the conditions is reduced, and the use difficulty of the radio frequency ablation product is also reduced.
In an embodiment of the present application, if the first comparison result is that the variation parameter of the impedance is smaller than or equal to the preset impedance parameter, and the second comparison result is that the variation parameter of the temperature is smaller than or equal to the preset temperature parameter, the variation parameter of the impedance and the variation parameter of the temperature are continuously monitored.
In this embodiment of the present application, the preset acceleration value may be fixed, or may be obtained according to the method for obtaining the preset acceleration value, which is not described herein.
In the embodiment of the present application, if the impedance increase rate exceeds the maximum impedance surge gradient value, or the temperature slope exceeds the maximum temperature increase threshold, the rf host 10 is controlled to stop working.
According to the embodiment of the application, on one hand, the temperature regulation device is divided into two stages of coarse regulation and fine regulation, so that the condition that the temperature is too high due to too low regulation flow rate can be avoided, and the temperature is prevented from suddenly changing. On the other hand, the flow velocity value can be gradually adjusted according to the increment of the index number during coarse adjustment, so that the problem that the temperature is reduced too fast due to the rapid increment of the flow velocity value is avoided, and the ablation effect is influenced.
In an embodiment of the present application, adjusting the flow rate of the cooling medium according to the first comparison result and the second comparison result includes:
And S701, if the first comparison result is that the change parameter of the impedance is smaller than the preset impedance parameter or the second comparison result is that the change parameter of the temperature is smaller than the preset temperature parameter, reducing the flow rate of the cooling medium according to the preset deceleration value.
In this embodiment, the change parameter of the impedance may be compared with the preset impedance parameter, if the change parameter of the impedance is smaller than the preset impedance parameter, the flow rate of the cooling connection is reduced according to the preset deceleration, and if the change parameter of the impedance is not smaller than the preset impedance parameter, the change parameter of the temperature is compared with the preset temperature parameter. Or, the temperature change parameter may be compared with a preset temperature parameter, if the temperature change parameter is smaller than the preset temperature parameter, the temperature is decelerated to reduce the flow rate of the cooling connection according to the preset speed, and if the temperature change parameter is not smaller than the preset temperature parameter, the impedance change parameter is compared with the preset impedance parameter.
If the first comparison result is that the variation parameter of the impedance is larger than or equal to the preset impedance parameter and the second comparison result is that the variation parameter of the temperature is larger than or equal to the preset temperature parameter, continuing to monitor the variation parameter of the impedance and the variation parameter of the temperature.
In this embodiment, the impedance change parameter includes an impedance curve slope within a preset time interval, and the preset impedance parameter includes a preset impedance deceleration threshold; the temperature change parameter comprises a temperature curve slope within a preset time interval, and the preset temperature parameter comprises a preset temperature deceleration threshold.
In one embodiment, the slope of the impedance curve within the preset time interval may be the ratio of the impedance variation within the preset time interval to the preset time interval, for example
Wherein K is R Is the slope of the impedance curve within a preset time interval, R 2 Is the current impedance value, R 1 The last impedance value is, t is a preset time interval, and the measurement time interval between the current impedance value and the last impedance value is the preset time interval t.
In one embodiment, the slope of the temperature curve within the preset time interval is consistent with the slope of the temperature curve in determining whether to increase the flow rate, which is not described herein.
In one embodiment, the preset impedance deceleration threshold may be a fixed value, such as 0.05 Ω/min, 0.1 Ω/min, or 0.2 Ω/min, etc. The preset temperature deceleration threshold may also be fixed, for example, 0.5 ℃/min, 1 ℃/min, etc.
In another embodiment, there may be a plurality of preset impedance deceleration thresholds, and different impedance deceleration thresholds may be selected under different conditions, for example, step S702-step S706 below:
in one embodiment, comparing the variable parameter of the impedance with a preset impedance parameter to obtain a first comparison result includes:
S702, acquiring a currently set flow velocity index number.
S703, obtaining an impedance parameter corresponding to the currently set flow velocity index number, and comparing the variation parameter of the impedance with the obtained impedance parameter to obtain a first comparison result.
Comparing the temperature variation parameter with a preset temperature parameter to obtain a second comparison result, wherein the second comparison result comprises:
s704, acquiring a currently set flow velocity index number.
And S705, acquiring a temperature parameter corresponding to the currently set flow speed index number, and comparing the temperature variation parameter with the acquired temperature parameter to obtain a second comparison result.
Reducing the flow rate of the cooling medium according to a preset deceleration value, comprising:
s706, acquiring a preset deceleration value corresponding to the currently set flow velocity index number, and reducing the flow velocity of the cooling medium according to the preset deceleration value.
The specific method of the above steps may refer to steps S601 to S604, and will not be described herein.
In one embodiment, after reducing the flow rate of the cooling medium at the preset deceleration value, the method includes:
s707, acquiring a current set flow velocity index number and acquiring a flow velocity value corresponding to the current set index number; if the flow velocity of the cooling medium after the reduction is smaller than the acquired flow velocity value, the flow velocity index number is set to be the last preset value in the preset sequence.
In one embodiment, the flow index number here may be the same as the flow index number in steps S601-S604.
In this embodiment of the present application, after the flow rate is increased in a coarse adjustment manner, the flow rate index number may be set to a next preset value in the preset sequence, so that the determined preset flow rate is a flow rate corresponding to the next preset value (i.e., the preset flow rate is increased); after increasing the flow rate in a fine-tuning manner, the flow rate index number is unchanged. After the flow rate is reduced according to the method, if the flow rate is reduced too much, that is, if the reduced flow rate is smaller than the flow rate value corresponding to the current index number, then the flow rate value cannot be increased gradually according to the flow rate value corresponding to each index number when the flow rate is increased, so that the flow rate value is increased suddenly, and if the flow rate is reduced too much (that is, if the reduced flow rate is smaller than the flow rate value corresponding to the current index number), the index number can be set to the last preset value in the preset sequence, so that the flow rate corresponding to each preset value is increased gradually when the flow rate is increased subsequently, and the flow rate value is not increased suddenly.
According to the embodiment of the application, the impedance data and the temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter.
Referring to fig. 4, a schematic structural diagram of a flow rate control device according to an embodiment of the present application is shown. For convenience of explanation, only portions relevant to the embodiments of the present application are shown. The apparatus may be a computer terminal or a software module configured in the computer terminal. As shown in fig. 5, the apparatus includes: an acquisition module 101, a calculation module 102 and a control module 103.
The acquiring module 101 is configured to acquire impedance data and temperature data of an operation position of a radio frequency operation object in real time.
The calculating module 102 is configured to obtain a variation parameter of the impedance according to the impedance data, and obtain a variation parameter of the temperature according to the temperature data.
And the control module 103 is used for adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature.
Further, the control module 103 is further configured to compare the variation parameter of the impedance with a preset impedance parameter to obtain a first comparison result; comparing the temperature variation parameter with a preset temperature parameter to obtain a second comparison result; and adjusting the flow rate of the cooling medium according to the first comparison result and the second comparison result.
According to the embodiment of the application, the impedance data and the temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter.
In an embodiment of the present application, the control module 103 is further configured to increase the flow rate of the cooling medium to a preset flow rate value if the first comparison result indicates that the variation parameter of the impedance is greater than the preset impedance parameter; and if the first comparison result is that the variation parameter of the impedance is smaller than or equal to the preset impedance parameter, and the second comparison result is that the variation parameter of the temperature is larger than the preset temperature parameter, increasing the flow rate of the cooling medium according to a preset speed-up value.
Further, the control module 103 is further configured to obtain a current set flow rate index, where the flow rate index is a preset value in a preset sequence; each preset value in the preset sequence corresponds to an impedance parameter and a flow velocity value respectively, and the flow velocity value corresponding to each preset value is increased according to the sequence of the preset values in the preset sequence; and obtaining the impedance parameter corresponding to the currently set flow velocity index number, and comparing the variation parameter of the impedance with the obtained impedance parameter to obtain a first comparison result.
The control module 103 is further configured to obtain a flow velocity value corresponding to the currently set flow velocity index number, and increase the flow velocity of the cooling medium to the obtained flow velocity value.
Further, the control module 103 is further configured to set the flow rate index to a next preset value in the preset sequence.
In this embodiment, the impedance change parameter includes an impedance increase rate within a preset time interval, and the preset impedance parameter includes a preset impedance surge gradient value; the temperature change parameter comprises a temperature curve slope in a preset time interval, and the preset temperature parameter comprises a preset temperature acceleration threshold.
According to the embodiment, impedance data and temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter. After the flow rate is adjusted in time, the conditions of too fast carbonization, tissue adhesion, impedance surge and the like of the operation position due to the too high temperature can be reduced, the frequency of actively stopping ablation of the radio frequency ablation product due to the conditions is reduced, and the use difficulty of the radio frequency ablation product is also reduced.
In an embodiment of the present application, the control module 103 is further configured to reduce the flow rate of the cooling medium according to a preset deceleration value if the first comparison result is that the variation parameter of the impedance is smaller than the preset impedance parameter, or the second comparison result is that the variation parameter of the temperature is smaller than the preset temperature parameter.
Further, the control module 103 is further configured to obtain a current set flow rate index, where the flow rate index is a preset value in a preset sequence; and obtaining the impedance parameter corresponding to the currently set flow velocity index number, and comparing the variation parameter of the impedance with the obtained impedance parameter to obtain a first comparison result.
Further, the control module 103 is further configured to obtain the currently set flow rate index number; and acquiring the temperature parameter corresponding to the currently set flow velocity index number, and comparing the temperature variation parameter with the acquired temperature parameter to acquire a second comparison result.
Further, the control module 103 is further configured to obtain a deceleration value corresponding to the currently set flow velocity index number, and reduce the flow velocity of the cooling medium according to the deceleration value.
Further, the control module 103 is further configured to obtain a current set flow rate index number, obtain a flow rate value corresponding to the current set flow rate index number, and set the flow rate index number to a last preset value in the preset sequence if the reduced flow rate of the cooling medium is smaller than the obtained flow rate value.
In this embodiment, the impedance change parameter includes an impedance curve slope within a preset time interval, and the preset impedance parameter includes a preset impedance deceleration threshold; the temperature change parameter comprises a temperature curve slope in a preset time interval, and the preset temperature parameter comprises a preset temperature deceleration threshold.
The specific process of implementing the respective functions of the above modules may refer to the relevant content in the embodiment of the flow rate control method, which is not described herein.
According to the embodiment, impedance data and temperature data of the operation position of the radio frequency operation object are obtained in real time; obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data; the flow rate of the cooling medium can be adjusted in time according to the common adjustment of the impedance change parameter and the temperature change parameter.
Referring to fig. 5, fig. 5 is a schematic hardware structure of an electronic device according to an embodiment of the present application.
By way of example, the electronic apparatus may be any of various types of computer system devices that are non-removable or portable and that perform wireless or wired communications. In particular, the electronic apparatus may be a desktop computer, a server, a mobile phone or a smart phone (e.g., an iPhone-based TM, an Android-based TM phone), a Portable game device (e.g., a Nintendo DS (TM), a PlayStation Portable TM, gameboy Advance TM, iPhone (TM)), a laptop computer, a PDA, a Portable internet device, a Portable medical device, a smart camera, a music player, and a data storage device, other handheld devices, and devices such as watches, headphones, pendants, headphones, etc., and the electronic apparatus may also be other wearable devices (e.g., devices such as electronic glasses, electronic clothing, electronic bracelets, electronic necklaces, and other head-mounted devices (HMDs)).
As shown in fig. 5, the electronic device 100 may include a control circuit, which may include a storage and processing circuit 300. The storage and processing circuit 300 may include memory, such as hard disk drive memory, non-volatile memory (e.g., flash memory or other electronically programmable limited delete memory used to form solid state drives, etc.), volatile memory (e.g., static or dynamic random access memory, etc.), and the like, as embodiments of the present application are not limited. Processing circuitry in the storage and processing circuitry 300 may be used to control the operation of the electronic device 100. The processing circuitry may be implemented based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, display driver integrated circuits, and the like.
The storage and processing circuit 300 may be used to run software in the electronic device 100, such as internet browsing applications, voice over internet protocol (Voice over Internet Protocol, VOIP) telephone call applications, email applications, media playing applications, operating system functions, and the like. Such software may be used to perform some control operations, such as image acquisition based on a camera, ambient light measurement based on an ambient light sensor, proximity sensor measurement based on a proximity sensor, information display functions implemented based on status indicators such as status indicators of light emitting diodes, touch event detection based on a touch sensor, functions associated with displaying information on multiple (e.g., layered) displays, operations associated with performing wireless communication functions, operations associated with collecting and generating audio signals, control operations associated with collecting and processing button press event data, and other functions in electronic device 100, to name a few.
Further, the memory stores executable program code, and a processor coupled to the memory invokes the executable program code stored in the memory to perform the flow rate control method as described in the previous embodiments.
Wherein the executable program code comprises the various modules in the flow rate control device as described in the embodiment of fig. 4 above, such as: an acquisition module 101, a calculation module 102, a control module 103, etc. The specific process of implementing the respective functions of the above modules may refer to the related description of fig. 4, which is not repeated herein.
The electronic device 100 may also include input/output circuitry 420. The input/output circuit 420 is operable to enable the electronic apparatus 100 to input and output data, i.e., to allow the electronic apparatus 100 to receive data from an external device and also to allow the electronic apparatus 100 to output data from the electronic apparatus 100 to the external device. The input/output circuit 420 may further include a sensor 320. The sensors 320 may include ambient light sensors, light and capacitance based proximity sensors, touch sensors (e.g., light based touch sensors and/or capacitive touch sensors, where the touch sensors may be part of a touch display screen or may be used independently as a touch sensor structure), acceleration sensors, and other sensors, among others.
The input/output circuitry 420 may also include one or more displays, such as display 140. Display 140 may include one or a combination of several of a liquid crystal display, an organic light emitting diode display, an electronic ink display, a plasma display, and a display using other display technologies. Display 140 may include an array of touch sensors (i.e., display 140 may be a touch screen display). The touch sensor may be a capacitive touch sensor formed of an array of transparent touch sensor electrodes, such as Indium Tin Oxide (ITO) electrodes, or may be a touch sensor formed using other touch technologies, such as acoustic wave touch, pressure sensitive touch, resistive touch, optical touch, etc., as embodiments of the present application are not limited.
The electronic device 100 may also include an audio component 360. Audio component 360 may be used to provide audio input and output functionality for electronic device 100. The audio components 360 in the electronic device 100 may include speakers, microphones, buzzers, tone generators, and other components for generating and detecting sound.
The electronic device 100 may further include a battery, power management circuitry, and other input/output units 400. The input/output unit 400 may include buttons, levers, click wheels, scroll wheels, touch pads, keypads, keyboards, cameras, light emitting diodes, and other status indicators, etc.
A user may control the operation of the electronic device 100 by inputting commands through the input/output circuit 420, and may use output data of the input/output circuit 420 to enable receiving status information and other outputs from the electronic device 100.
Further, the embodiments of the present application also provide a non-transitory computer-readable storage medium, which may be configured in the server in the above embodiments, and on which a computer program is stored, which when executed by a processor, implements the flow rate control method described in the above embodiments.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of skill in the art will appreciate that the various illustrative modules/units and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other manners. For example, the apparatus/terminal embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow in the method of the above embodiment, and may also be implemented by a computer program to instruct related hardware. The computer program may be stored in a computer readable storage medium, which computer program, when being executed by a processor, may carry out the steps of the various method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (13)
1. A flow rate control method, the method comprising:
acquiring impedance data and temperature data of an operation position of a radio frequency operation object in real time;
obtaining a change parameter of impedance according to the impedance data, and obtaining a change parameter of temperature according to the temperature data;
and adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature.
2. The method of claim 1, wherein adjusting the flow rate of the cooling medium based on the variable parameter of the impedance and the variable parameter of the temperature comprises:
comparing the change parameter of the impedance with a preset impedance parameter to obtain a first comparison result;
Comparing the temperature variation parameter with a preset temperature parameter to obtain a second comparison result;
and adjusting the flow rate of the cooling medium according to the first comparison result and the second comparison result.
3. The method of claim 2, wherein adjusting the flow rate of the cooling medium based on the first comparison result and the second comparison result comprises:
if the first comparison result is that the change parameter of the impedance is larger than the preset impedance parameter, increasing the flow rate of the cooling medium to a preset flow rate value;
and if the first comparison result is that the variation parameter of the impedance is smaller than or equal to the preset impedance parameter, and the second comparison result is that the variation parameter of the temperature is larger than the preset temperature parameter, increasing the flow rate of the cooling medium according to a preset speed-up value.
4. A method according to claim 3, wherein comparing the variable parameter of the impedance with the preset impedance parameter to obtain a first comparison result comprises:
acquiring a current set flow velocity index number;
acquiring the impedance parameter corresponding to the currently set flow velocity index number, and comparing the variation parameter of the impedance with the acquired impedance parameter to obtain a first comparison result;
The increasing the flow rate of the cooling medium to a preset flow rate value comprises the following steps:
and acquiring a flow velocity value corresponding to the currently set flow velocity index number, and increasing the flow velocity of the cooling medium to the acquired flow velocity value.
5. The method of claim 4, wherein the flow index number is a preset value in a preset sequence; each preset value in the preset sequence corresponds to an impedance parameter and a flow velocity value respectively, and the flow velocity value corresponding to each preset value is increased according to the sequence of the preset values in the preset sequence;
after the flow rate of the cooling medium is increased to the acquired flow rate value, the method further comprises the steps of:
setting the flow rate index number to be the next preset value in the preset sequence.
6. The method of any one of claims 2 to 5, wherein the impedance variation parameter comprises an impedance increase rate over a predetermined time interval, and the predetermined impedance parameter comprises a predetermined impedance surge gradient value; the temperature change parameters comprise a temperature curve slope within a preset time interval, and the preset temperature parameters comprise a preset temperature acceleration threshold.
7. The method of claim 2, wherein adjusting the flow rate of the cooling medium based on the first comparison result and the second comparison result comprises:
and if the first comparison result is that the change parameter of the impedance is smaller than the preset impedance parameter or the second comparison result is that the change parameter of the temperature is smaller than the preset temperature parameter, reducing the flow rate of the cooling medium according to a preset deceleration value.
8. The method of claim 7, wherein comparing the variable parameter of the impedance with a preset impedance parameter to obtain a first comparison result comprises:
acquiring a current set flow velocity index number;
acquiring the impedance parameter corresponding to the currently set flow velocity index number, and comparing the variation parameter of the impedance with the acquired impedance parameter to obtain a first comparison result;
comparing the temperature variation parameter with a preset temperature parameter to obtain a second comparison result, wherein the second comparison result comprises:
acquiring the currently set flow velocity index number;
acquiring a temperature parameter corresponding to the currently set flow velocity index number, and comparing the temperature variation parameter with the acquired temperature parameter to acquire a second comparison result;
The reducing the flow rate of the cooling medium according to the preset deceleration value comprises the following steps:
and acquiring a deceleration value corresponding to the currently set flow velocity index number, and reducing the flow velocity of the cooling medium according to the deceleration value.
9. The method of claim 7 or 8, wherein the method further comprises:
acquiring a current flow velocity index number, wherein the flow velocity index number is a preset value in a preset sequence, and the flow velocity index number is a preset value in the preset sequence; each preset value in the preset sequence corresponds to an impedance parameter and a flow velocity value respectively, and the flow velocity value corresponding to each preset value is increased according to the sequence of the preset values in the preset sequence;
acquiring a flow velocity value corresponding to the currently set flow velocity index number;
and if the flow velocity of the cooling medium after the reduction is smaller than the acquired flow velocity value, setting the flow velocity index number as the preset value of the last preset sequence.
10. The method according to any one of claims 7 to 9, wherein the impedance variation parameter comprises an impedance curve slope over a preset time interval, and the preset impedance parameter comprises a preset impedance deceleration threshold; the temperature change parameters comprise a temperature curve slope within a preset time interval, and the preset temperature parameters comprise a preset temperature deceleration threshold.
11. A flow rate control device, characterized by comprising:
the acquisition module is used for acquiring impedance data and temperature data of the operation position of the radio frequency operation object in real time;
the calculation module is used for obtaining the change parameters of the impedance according to the impedance data and obtaining the change parameters of the temperature according to the temperature data;
and the control module is used for adjusting the flow rate of the cooling medium according to the change parameters of the impedance and the change parameters of the temperature.
12. An electronic device, comprising:
a memory and a processor;
the memory stores executable program code;
the processor coupled to the memory, invoking the executable program code stored in the memory, performing the steps in the flow rate control method of any of claims 1-10.
13. A non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, implements the flow rate control method according to any one of claims 1 to 10.
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| CN202111647203.6A CN116407247A (en) | 2021-12-29 | 2021-12-29 | Flow rate control method, electronic device and computer readable storage medium |
| PCT/CN2022/137404 WO2023124868A1 (en) | 2021-12-29 | 2022-12-08 | Flow rate control method, electronic device and computer-readable storage medium |
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| US6537272B2 (en) * | 1998-07-07 | 2003-03-25 | Medtronic, Inc. | Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue |
| EP2445434B1 (en) * | 2009-12-11 | 2018-08-22 | St. Jude Medical Atrial Fibrillation Division, Inc. | System for determining the likelihood of endocardial barotrauma in tissue during ablation |
| CN106137381B (en) * | 2015-03-31 | 2019-03-15 | 四川锦江电子科技有限公司 | Radiofrequency melting instrument, the control method of radiofrequency melting instrument and device |
| CN110177515A (en) * | 2016-12-07 | 2019-08-27 | 努瓦拉公司 | For reducing treatment variability and increase treatment effect and persistent method and system |
| US11135003B2 (en) * | 2018-07-13 | 2021-10-05 | Avent, Inc. | System and method for independent or simultaneous control of multiple radiofrequency probes during an ablation procedure |
| US20210007796A1 (en) * | 2019-07-10 | 2021-01-14 | Zidan Medical, Inc. | Systems, devices and methods for treating lung tumors |
| US11589918B2 (en) * | 2019-04-08 | 2023-02-28 | Biosense Webster (Israel) Ltd. | System and method for temperature control in irrigated ablation |
| CN112641501B (en) * | 2020-12-09 | 2021-10-26 | 杭州堃博生物科技有限公司 | Injection pump perfusion control method, device, system and computer readable storage medium |
| CN112791262B (en) * | 2020-12-31 | 2023-02-03 | 杭州堃博生物科技有限公司 | Radio frequency operation data regulation and control method and device and injection pump |
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