CN213581190U - Energy output measuring device of high-frequency electric surgical equipment - Google Patents
Energy output measuring device of high-frequency electric surgical equipment Download PDFInfo
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- CN213581190U CN213581190U CN202022648030.7U CN202022648030U CN213581190U CN 213581190 U CN213581190 U CN 213581190U CN 202022648030 U CN202022648030 U CN 202022648030U CN 213581190 U CN213581190 U CN 213581190U
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Abstract
The utility model provides a high frequency electrosurgery equipment energy output measuring device, include: an input module for obtaining a resistance value required by the high-frequency electrosurgical device; the control module is connected with the output end of the input module and used for outputting a corresponding control signal according to the received resistance value; a load output module connected to an output of the control module and an output of a high frequency electrosurgical device for outputting an analog load coupled to the output of the high frequency electrosurgical device in accordance with the control signal; and the display module is connected with the output end of the control module and is used for displaying the acquired voltage, current and power of the high-frequency electrosurgical equipment. The measuring device has the advantages that the resistance value required by the high-frequency electrosurgical equipment is obtained, the load is automatically simulated according to the resistance value to output, the voltage value, the current value and the power value of the high-frequency electrosurgical equipment under different load conditions can be measured, and the measuring device is simple in structure, convenient to use and low in production cost.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a high frequency electrosurgery equipment energy output measuring device.
Background
A high-frequency electric knife (high-frequency surgical instrument) is a high-frequency electric surgical device for replacing a mechanical surgical knife to cut tissues. The tissue is heated when the high-frequency voltage current generated by the tip of the effective electrode contacts with the body, so that the separation and coagulation of the body tissue are realized, and the aim of cutting and hemostasis is fulfilled.
With the development of medical technology and the requirements of clinical application, the composite electrosurgical equipment mainly including the high-frequency surgical instrument has been developed correspondingly: the high-frequency argon air knife, the high-frequency ultrasonic scalpel, the high-frequency electric cutting endoscope treatment system, the high-frequency rotary cutting defatting machine and other equipment have obvious clinical effects, and a wider application range is expanded for clinical operation.
High frequency voltage currents generated by high frequency electrosurgical systems, when passing through high impedance tissue, generate heat in the tissue, causing the tissue to vaporize or coagulate. The resistance value varies from 100 Ω to 2000 Ω during use of the electrosurgical device. As the tissue coagulates and water in the cells vaporizes, the tissue dries, resulting in an increasing electrical resistance and eventually the current stops completely. Therefore, it is important to be able to accurately measure the output voltage, current and power of the electrosurgical device at different load impedances in accordance with the designed technical parameters, which is related to the safety of the device in practical surgical use.
However, the detection of the accuracy of the output voltage, current and power value of the electrosurgical equipment under different load conditions is basically carried out by using a foreign brand high-frequency electrotome analyzer or by using a combination of the power analyzer and an external load resistor. Foreign brands high frequency electrotome analyzers are not only expensive, but also inconvenient to use, for example, need the combination mode of power analyzer and load resistance to measure: the low-bandwidth power analyzer is low in price, the range of the electrosurgical equipment suitable for measurement is narrow, the application and measurement range of the high-bandwidth power analyzer is wide and expensive, and in addition, the output voltage, the current and the power value of the electrosurgical equipment under different load conditions can be measured only by externally connecting load resistors with different resistance values. Therefore, there is a need for an inexpensive, convenient to use device for measuring the energy output of high frequency electrosurgical devices.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an energy output measuring device for high frequency electric surgical equipment, which is used to solve the problem of inconvenient use of the energy output measuring device in the prior art.
To achieve the above and other related objects, the present invention provides a high frequency electrosurgical apparatus energy output measuring device, comprising:
an input module for obtaining a resistance value required by the high-frequency electrosurgical device;
the control module is connected with the output end of the input module and used for outputting a corresponding control signal according to the received resistance value;
a load output module connected to an output of the control module and an output of a high frequency electrosurgical device for outputting an analog load coupled to the output of the high frequency electrosurgical device in accordance with the control signal;
and the display module is connected with the output end of the control module and is used for displaying the voltage, the current and the power of the high-frequency electrosurgical equipment collected under the condition of the simulated load.
In an embodiment of the present invention, the device for measuring energy output of high-frequency electric surgical equipment further includes: and the driving module is connected between the output end of the control module and the input end of the load output module and used for driving the load output module according to the control signal.
In an embodiment of the utility model, load output module includes a plurality of relays and a plurality of resistance, and the output of every relay corresponds connects a resistance, is used for the actuation the resistive load that the relay will correspond makes up load output module.
In an embodiment of the present invention, the resistor is an inductionless resistor.
In an embodiment of the present invention, the device for measuring energy output of high-frequency electric surgical equipment further includes: and the current acquisition module is connected between the load output module and the output end of the high-frequency electrosurgical equipment and is used for acquiring a current signal of the high-frequency electrosurgical equipment.
In an embodiment of the present invention, the current collecting module includes a current transformer and a first root mean square chip, the current transformer is connected between the load output module and the output end of the high-frequency electrosurgical device, and collects a non-high-frequency alternating current signal of the high-frequency electrosurgical device; the first root-mean-square chip is connected between the current transformer and the control module and used for converting a high-frequency alternating current signal into a direct current signal and inputting the direct current signal into the control module.
In an embodiment of the present invention, the device for measuring energy output of high-frequency electric surgical equipment further includes: and the voltage acquisition module is connected between the load output module and the output end of the high-frequency electrosurgical equipment and is used for acquiring a voltage signal of the high-frequency electrosurgical equipment.
In an embodiment of the present invention, the voltage acquisition module includes a voltage transformer and a second root mean square chip, the voltage transformer is connected between the load output module and the output end of the high-frequency electrosurgical device, and acquires a high-frequency voltage signal of the high-frequency electrosurgical device; and the second root-mean-square chip is connected between the voltage transformer and the control module and used for converting the high-frequency voltage signal into a direct-current voltage signal and inputting the direct-current voltage signal into the control module.
In an embodiment of the present invention, the device for measuring energy output of high-frequency electric surgical equipment further includes: the output of the high frequency electrosurgical device is connected to the load output module with a resistive output port.
As described above, the utility model discloses a high frequency electrosurgery equipment energy output measuring device has following beneficial effect:
the measuring device has the advantages that the resistance value required by the high-frequency electrosurgical equipment is obtained, the load is automatically simulated according to the resistance value to output, the voltage value, the current value and the power value of the high-frequency electrosurgical equipment under different load conditions can be measured, the measuring device is simple in structure, convenient to use and low in production cost, and the requirement of combined measurement of the high-frequency electrosurgical equipment and an external load resistor is met.
Drawings
FIG. 1 is a block diagram of an energy output measuring device for a high frequency electrosurgical unit according to the present invention;
FIG. 2 is a block diagram of another embodiment of an energy output measuring device for a high frequency electrosurgical unit according to the present invention;
fig. 3 shows a schematic diagram of an energy output measuring device of a high-frequency electric surgical device according to the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.
Referring to fig. 1, the structural block diagram of the energy output measuring device for high-frequency electrosurgery equipment provided by the present invention is detailed as follows:
an input module 1 for acquiring a resistance value required for a high-frequency electrosurgical apparatus;
the control module 2 is connected with the output end of the input module and used for outputting a corresponding control signal according to the received resistance value;
a load output module 3 connected to the output of the control module and the output of the high frequency electrosurgical device 5 for outputting an analog load coupled to the output of the high frequency electrosurgical device in accordance with the control signal;
and the display module 4 is connected with the output end of the control module and is used for displaying the voltage, the current and the power of the high-frequency electrosurgical equipment 5 collected under the condition of the simulated load.
The input module 1 and the display module 4 can be integrated into a whole, so that the production cost can be greatly reduced, and the use is convenient, for example, a touch screen is adopted, and for example, a liquid crystal display screen is touched; of course, the display can be set separately, and the display of the single input and the single output is not described herein again.
The control module 2 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the control module may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Microprocessor (MCU), a Field Programmable Gate Array (FPGA) or other Programmable logic devices, a discrete Gate or transistor logic device, or a discrete hardware component, wherein the control module does not involve a new Processing algorithm and a new control logic, controls a control logic of a load output module according to an input resistance value (load) required by the high-frequency electrosurgical device, and calculates the voltage, current, and power of the high-frequency electrosurgical device 5, and the control module is a mature chip module in the prior art and is not described herein again.
In the embodiment, the voltage value, the current value and the power value of the high-frequency electrosurgical equipment under different load conditions can be measured by acquiring the resistance value required by the high-frequency electrosurgical equipment and automatically simulating the load according to the resistance value for output, and the device has a simple structure and is convenient to produce and manufacture; meanwhile, under the condition of lower cost, the measuring precision of the device can also reach the precision level of the energy output measuring device of foreign high-frequency electrosurgical equipment.
Referring to fig. 2, another structural block diagram of an energy output measuring device for high-frequency electrosurgery equipment provided by the present invention includes:
on the basis of the above embodiment, the high-frequency electrosurgical apparatus energy output measuring device further includes: and the driving module 6 is connected between the output end of the control module 2 and the input end of the load output module 3 and is used for driving the load output module according to the control signal.
Specifically, the load output module comprises a plurality of relays and a plurality of resistors, and the output end of each relay is correspondingly connected with one resistor and used for attracting the relays to combine the corresponding resistor loads to the load output module.
When the microprocessor is selected for use, the driving capability of the I/O port of the control module is weak, and the control module cannot directly drive the coil of the relay to attract the relay, so that the microprocessor sends an instruction I/O pin electric signal to drive the coil of the relay after the I/O pin electric signal is amplified by the driver, and the drive module effectively ensures that the load output module attracts according to a control signal to realize load analog output.
In the present embodiment, each relay corresponds to a resistor, and as shown in fig. 3, n relays are correspondingly connected to n non-inductive resistors for incorporating or disconnecting a resistive load into or from the load output module, so that a simulated load is accurately output, thereby meeting the load requirements of the high-frequency electrosurgical device.
On the basis of the above embodiments, the resistor is a non-inductive resistor, and in this embodiment, the non-inductive resistor has a very small inductance value (only a few microhenries), has excellent frequency response characteristics, and can be widely used in ac and dc circuits as well as in medium and high frequency circuits; meanwhile, the volt-ampere characteristic of the non-inductive resistor is linear, so that the non-inductive resistor has stable electrical performance, high voltage resistance and good insulating performance.
In other embodiments, the high frequency electrosurgical device energy output measurement apparatus further comprises: and the current acquisition module 7 is connected between the load output module 3 and the output end of the high-frequency electrosurgical equipment 5 and is used for acquiring a current signal of the high-frequency electrosurgical equipment.
In other embodiments, the high frequency electrosurgical device energy output measurement apparatus further comprises: and the voltage acquisition module 8 is connected between the load output module 3 and the output end of the high-frequency electrosurgical equipment 5 and is used for acquiring a voltage signal of the high-frequency electrosurgical equipment.
Referring to fig. 3, a schematic diagram of an energy output measuring device for high-frequency electrosurgery equipment according to the present invention is detailed as follows:
the current acquisition module 7 comprises a current transformer and a first root-mean-square chip, wherein the current transformer is connected between the load output module and the output end of the high-frequency electrosurgical equipment and is used for acquiring a high-frequency alternating-current signal of the high-frequency electrosurgical equipment; the first root-mean-square chip is connected between the current transformer and the control module and used for converting a high-frequency alternating current signal into a direct current signal and inputting the direct current signal into the control module.
Wherein, because the high-frequency current amplitude outputted by the high-frequency electrosurgical device far exceeds the input amplitude range of the control module (i.e. the MCU in fig. 3) with its ADC, in order to safely measure the output current, the primary of the current transformer is connected in series to the resistance output port to perform a proportional attenuation and isolation sampling on the output current.
The voltage acquisition module 8 comprises a voltage transformer and a second root-mean-square chip, and the voltage transformer 82 is connected between the load output module 3 and the output end of the high-frequency electrosurgical device 5 and acquires a high-frequency voltage signal of the high-frequency electrosurgical device; and the second root-mean-square chip is connected between the voltage transformer and the control module and used for converting the high-frequency voltage signal into a direct-current voltage signal and inputting the direct-current voltage signal into the control module.
Wherein, because the high-frequency voltage value of the output of the high-frequency electric surgical equipment far exceeds the input amplitude range of the ADC of the control module, in order to safely measure the output voltage, the primary of the voltage transformer needs to be incorporated into the resistance output port to perform a certain proportion of attenuation and isolation sampling on the output voltage.
In this embodiment, since the electrosurgical device outputs ac signals of high frequency, the ADC analog-to-digital converter of the control module has a limited sampling rate, and in order to accurately measure the high-frequency voltage and high-frequency current values output by the high-frequency electrosurgical device, the first root-mean-square chip and the second root-mean-square chip need to convert the high-frequency electrical signals into dc signals and input the dc signals to the ADC input terminal of the control module; for example, the first rms chip converts a high-frequency alternating current signal into a direct current signal and inputs the direct current signal into the control module; the second root mean square chip converts the high-frequency voltage signal into a direct-current voltage signal and inputs the direct-current voltage signal into the control module, converts the collected direct-current output signal corresponding to the voltage and the current into digital quantity in the above mode, calculates a power value according to the power value P which is UI, and accurately displays the voltage value, the current value and the power value of the electrosurgical equipment.
In another embodiment, the high frequency electrosurgical apparatus energy output measurement device further comprises: a resistive output port with which an output of the high frequency electrosurgical device is connected to the load output module.
In the embodiment, before use, the output end of the electrosurgical device is connected to the resistance output port of the high-frequency electrosurgical energy output measuring device through a cable, a user inputs a load resistance value pre-merged into the output end of the high-frequency electrosurgical device through a touch liquid crystal display screen, the control module enables the corresponding I/O port to output an operation level according to a specific parameter value after receiving a parameter instruction input by the user, and the I/O port level drives the corresponding relay after being amplified so that the load resistance with the corresponding resistance value is merged into the resistance output port;
the high-frequency alternating current energy signal output by the high-frequency electrosurgical equipment is loaded on a resistor which is merged into a resistor output port, and because the primary side of the voltage transformer is connected in parallel with the resistor output port and the primary side of the current transformer is connected in series with the resistor output port, when the high-frequency electrosurgical equipment which is connected into the resistor output port excites and outputs, the voltage and the current which are in proportion to the output are respectively generated at the output ports of the voltage transformer and the current transformer;
the high-frequency voltage and current obtained by isolated sampling is converted into direct current through a root mean square chip, analog-to-digital conversion is carried out after sampling is carried out through an ADC (analog-to-digital converter) of a control module, and the control module calculates and obtains an output voltage value, a current value and a power value of the high-frequency electrosurgical equipment under the current load condition;
and the control module transmits the calculated voltage, current and power values to a display screen to display and output the power values.
To sum up, the utility model discloses an acquire the required resistance value of high frequency electrosurgical equipment, export according to this resistance value automatic analog load, but measuring quantity high frequency electrosurgical equipment voltage value, current value and power value under different load situations, this measuring device not only simple structure, convenient to use, still low in production cost have satisfied the demand of the combination measurement of frequency electrosurgical equipment and external load resistance. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. An apparatus for measuring energy output of a high frequency electrosurgical device, comprising:
an input module for obtaining a resistance value required by the high-frequency electrosurgical device;
the control module is connected with the output end of the input module and used for outputting a corresponding control signal according to the received resistance value;
a load output module connected to an output of the control module and an output of a high frequency electrosurgical device for outputting an analog load coupled to the output of the high frequency electrosurgical device in accordance with the control signal;
and the display module is connected with the output end of the control module and is used for displaying the acquired voltage, current and power of the high-frequency electrosurgical equipment.
2. The high frequency electrosurgical apparatus energy output measurement device of claim 1, further comprising: and the driving module is connected between the output end of the control module and the input end of the load output module and used for driving the load output module according to the control signal.
3. A high frequency electrosurgical apparatus energy output measurement device according to claim 1 or 2, wherein the load output module comprises a plurality of relays and a plurality of resistors, one resistor being connected to each relay output for engaging the relay to combine the corresponding resistive load to the load output module.
4. A high frequency electrosurgical apparatus energy output measurement device according to claim 3, wherein the resistor is a non-inductive resistor.
5. The high frequency electrosurgical apparatus energy output measurement device of claim 1, further comprising: and the current acquisition module is connected between the load output module and the output end of the high-frequency electrosurgical equipment and is used for acquiring a current signal of the high-frequency electrosurgical equipment.
6. The high frequency electrosurgical device energy output measurement apparatus according to claim 5, wherein the current collection module comprises a current transformer and a first root mean square chip, the current transformer being connected between the load output module and an output of the high frequency electrosurgical device to collect a high frequency alternating current signal of the high frequency electrosurgical device; the first root-mean-square chip is connected between the current transformer and the control module and used for converting a high-frequency alternating current signal into a direct current signal and inputting the direct current signal into the control module.
7. The high frequency electrosurgical apparatus energy output measurement device of claim 1, further comprising: and the voltage acquisition module is connected between the load output module and the output end of the high-frequency electrosurgical equipment and is used for acquiring a voltage signal of the high-frequency electrosurgical equipment.
8. The high frequency electrosurgical device energy output measurement apparatus according to claim 7, wherein the voltage acquisition module comprises a voltage transformer and a second rms chip, the voltage transformer being connected between the load output module and an output of the high frequency electrosurgical device to acquire a high frequency voltage signal of the high frequency electrosurgical device; and the second root-mean-square chip is connected between the voltage transformer and the control module and used for converting the high-frequency voltage signal into a direct-current voltage signal and inputting the direct-current voltage signal into the control module.
9. The high frequency electrosurgical device energy output measurement apparatus according to claim 1, wherein the output of the high frequency electrosurgical device is connected to the load output module with a resistive output port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022648030.7U CN213581190U (en) | 2020-11-16 | 2020-11-16 | Energy output measuring device of high-frequency electric surgical equipment |
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| CN202022648030.7U CN213581190U (en) | 2020-11-16 | 2020-11-16 | Energy output measuring device of high-frequency electric surgical equipment |
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| CN213581190U true CN213581190U (en) | 2021-06-29 |
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| CN202022648030.7U Active CN213581190U (en) | 2020-11-16 | 2020-11-16 | Energy output measuring device of high-frequency electric surgical equipment |
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