CN215079564U - High-frequency surgical equipment detection circuit - Google Patents
High-frequency surgical equipment detection circuit Download PDFInfo
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- CN215079564U CN215079564U CN202120356060.2U CN202120356060U CN215079564U CN 215079564 U CN215079564 U CN 215079564U CN 202120356060 U CN202120356060 U CN 202120356060U CN 215079564 U CN215079564 U CN 215079564U
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Abstract
The utility model relates to a high-frequency operation equipment detection circuit, belonging to the technical field of medical products such as high-frequency electrotome, radio frequency knife and the like; the circuit comprises an oscillation feedback circuit for acquiring pat voltage signals, a first signal module for acquiring resistance signals dout of a current starting resistor and a second signal module for acquiring voltage signals Vout of a current human tissue and current signals Iout of the current human tissue, wherein the oscillation feedback circuit comprises a three-point oscillation circuit, an impedance sensor T704, a neutral electrode impedance detection circuit and a pat voltage signal generation circuit, the first signal circuit comprises a colpitts oscillation circuit, a first transformer T001 and a first rectification filter circuit, and the second signal module comprises a second isolation transformer T002 and a second rectification filter circuit which are connected to two ends of an output port in parallel; the alarm detection of the negative plate of the high-frequency electrotome and the output protection of the bipolar coagulation are convenient to carry out.
Description
Technical Field
The utility model relates to a high frequency operation equipment detection circuitry belongs to medical product technical field such as high frequency electrotome, radio frequency sword.
Background
The high-frequency electrotome on the market at present is divided into two kinds in the aspect of negative plate (neutral electrode) detection:
the negative plate can be simply detected whether to be well connected or not, but can not be detected whether to be well adhered or not and the adhering area, and when the negative plate falls off to be smaller than the safe area, scalding can occur at the negative plate.
And (II) the sticking area can be detected, but only good and no alarm can be detected, and the alarm is disconnected to output if the good and no alarm is detected. Only two points can be detected, and the negative plate is normally output when well pasted; the alarm disconnection output is given when the pasting area drops to a safe area, so that a doctor can not use continuously without knowing when the negative plate begins to drop, the alarm is given when the negative plate drops to the safe area, the blood coagulation requirement of the doctor can not be met at the moment, the negative plate can only be continuously used after being pasted well, and unnecessary bleeding is brought to the patient easily due to untimely blood coagulation of the doctor.
Moreover, the electrocoagulation output of the high-frequency electrotome is mainly used for coagulation after a surgeon cuts human tissue or capillary bleeding, and currently, two bipolar control modes are foot control and self-starting control respectively.
(1) The electric knife on the market has no double-pole short-circuit protection
The existing commercial high-frequency electrotome has almost no measures on bipolar protection, when a bipolar instrument is used, the forceps tip is easy to touch by mistake, namely the instrument is short-circuited, the current is large, and destructive influence is caused on the instrument and a main machine of the equipment.
When using present market electrotome to carry out bipolar coagulation and carry out the blood coagulation, no matter use pedal control or use self-starting control, when the tweezers point mistake touches and takes place the short circuit, its tweezers both ends can produce instantaneous high voltage high frequency electricity, if under high-power output, still can produce high-voltage electric arc at the tweezers both ends, all be a hidden danger to doctor nurse patient, cause the influence to the operation easily.
(2) The electric knife on the market has no bipolar automatic cut-off output function
And a novice doctor is unskilled in bipolar use and cannot accurately judge whether the blood vessel is completely coagulated, so a bipolar protection control method is designed according to market demands.
(3) The electrotome on the market can not output corresponding low power according to a low impedance value, and only outputs according to the current set power, so that unnecessary harm can be caused to a patient.
Therefore, according to market demands, a high-frequency surgical equipment detection circuit is designed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the detection circuit is used for collecting a current resistance signal dout of the starting resistor, a current voltage signal Vout of human tissue, and current signals Iout and pat of the human tissue, can feed back the falling condition of the negative plate in real time, and is convenient for performing high-frequency electrotome negative plate alarm detection and bipolar coagulation output protection.
High frequency surgical equipment detection circuitry, including the oscillation feedback circuit who is used for gathering pat voltage signal, be used for gathering the first signal module of the resistance signal dout of current starting resistance for gather the second signal module of the voltage signal Vout of current human tissue and the current signal Iout of current human tissue, oscillation feedback circuit includes bikini oscillating circuit, impedance sensor T704, neutral electrode impedance detection circuitry, pat voltage signal generating circuit, first signal circuit is including the colpitts oscillating circuit, first transformer T001, first rectification filter circuit, second signal module is including parallelly connected second isolation transformer T002 and the second rectification filter circuit at the delivery outlet both ends, still including establishing ties third isolation transformer T003 and the third rectification filter circuit at the delivery outlet both ends.
The analog signal pat is acquired through the oscillation feedback circuit, and the three-point oscillation circuit is used for generating a positive-going waveform in a self-excitation mode so as to ensure that the alarm can be given out under the condition that the electric knife is not output; the impedance value of a neutral electrode J704 on a negative plate is detected through an impedance sensor T704 and a neutral electrode impedance detection circuit, the ohm law shows that the impedance is increased when the area S is reduced, the amplitude of a sine wave is increased when the impedance value is increased, the amplitude of a waveform induced by a pat voltage signal generation circuit is also increased at the moment, then the rectification and the filtering are carried out, and finally a pat signal which is changed into an analog signal changed along with the change of a load is obtained; the falling condition of the negative plate can be fed back in real time.
The primary side of a second isolation transformer T002 is connected in parallel with two ends of an output port, high-voltage alternating current is converted into low-voltage alternating current which is connected in series and in parallel through a diode and a resistor of a second rectifying and filtering circuit, the low-voltage alternating current signal is rectified and filtered to obtain a direct-current voltage signal which is fed back to the single chip microcomputer, the direct-current voltage signal is Vout, and the current voltage signal of human tissues is collected.
The third isolation transformer T003 is connected in series at two ends of the output port, high-voltage alternating current is changed into low-voltage alternating current, and the low-voltage alternating current is rectified and filtered through the series-parallel connection of a diode and a resistor of the third rectifying and filtering circuit to obtain a direct-current voltage signal which is fed back to the singlechip, wherein the direct-current voltage signal is Iout, and the current signal of the current human tissue is collected.
The cobratiz oscillation circuit regularly sends out oscillation pulses, and aims to provide a detection power supply, a changed pulse signal is conducted to a secondary side from a primary side of a first transformer T001, a stable and smooth direct current is obtained after the pulse signal is rectified by a diode of a first rectification filter circuit and filtered by a capacitor, and a corresponding bipolar detection signal is fed back to a single chip microcomputer to be received and control the output of a bipolar port.
And acquiring a resistance signal dout of a current starting resistor, a voltage signal Vout of current human tissue and a current signal Iout of the current human tissue for bipolar coagulation output protection.
Preferably, the three-point oscillation circuit comprises a triode Q703, wherein a base electrode of the triode Q703 is connected with one end of a resistor R723, a collector electrode is connected with one end of a capacitor C715 and an input end 5 of an impedance sensor T704, an emitter electrode is connected with one end of a resistor R724 and the other end of the capacitor C715, the other end of the capacitor C715 is further connected with an excitation voltage VDD and an input end 6 of the impedance sensor T704, the excitation voltage VDD is further connected with one end of a resistor R719, the other end of the resistor R724 is connected with an anode of a zener diode D717, a cathode of the zener diode D717 is connected with the other end of the resistor R723 and the other end of the resistor R719, and an electrolytic capacitor C727 is connected between the anode and the cathode of the zener diode D717.
A positive sine waveform is generated by a three-point oscillating circuit in a self-excitation mode of an excitation voltage VDD, so that an alarm can be guaranteed under the condition that the electric knife does not output.
Preferably, the neutral electrode impedance detection circuit comprises a capacitor C713, one end of the capacitor C713 is connected with the input end 4 of the impedance sensor T704 and one end of the resistor R718, the other end of the capacitor C713 is connected with one end of the capacitor C718, the other end of the resistor R718 and one end of the resistor R722, the other end of the capacitor C713 is further connected with an output port, the other end of the capacitor C718 is connected with the input end 3 of the impedance sensor T704 and the other end of the resistor R722, and the other end of the resistor R722 and one end of the resistor R718 are connected with the neutral electrode J704 of the negative plate of the high-frequency electric knife.
For detecting the impedance value of the neutral electrode J704 on the negative plate, the positive-going wave amplitude increases as the impedance value increases.
Preferably, the pat voltage signal generating circuit includes a capacitance-variable diode D716, an anode of the capacitance-variable diode D716 is connected to the output end 2 of the impedance sensor T704, a cathode of the capacitance-variable diode D716 is connected to one end of a capacitor C719 and one end of an inductor L706, the other end of the inductor L706 is connected to one end of a capacitor C720 and one end of a resistor R725, the other end of the resistor R725 is connected to the other end of the capacitor C720, the other end of the capacitor C719 and the output end 1 of the impedance sensor T704, the output end 1 of the impedance sensor T704 is further connected to the other end of a resistor R724, the other end of the resistor R725 is further grounded, and one end of the resistor R725 is further connected to a pat voltage signal output port.
The positive sine wave amplitude is induced through the output end of the impedance sensor T704, then rectification and filtering are carried out, and finally the pat signal which is changed into an analog signal along with the change of the load is obtained.
Compared with the prior art, the utility model discloses following beneficial effect has:
high frequency operation equipment detection circuitry, high frequency operation equipment detection circuitry for gather current start resistance's resistance signal dout, current human tissue's voltage signal Vout, current human tissue's current signal Iout, pat voltage signal, the condition of droing that can feed back the negative pole piece in real time, be convenient for carry out high frequency electrotome negative plate warning and detect and bipolar coagulation output protection.
Drawings
FIG. 1 is a circuit diagram of the detection circuit of the high frequency surgical device of the present invention.
In the figure: 1. a three-point oscillation circuit; 2. a neutral electrode impedance detection circuit; 3. a pat voltage signal generation circuit; 4. a cobratiz oscillation circuit; 5. a first rectifying and filtering circuit; 6. a second rectifying and filtering circuit; 7. and a third rectifying and filtering circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
As shown in FIG. 1, the detection circuit of high frequency surgical equipment of the present invention comprises an oscillation feedback circuit for collecting pat voltage signal, a first signal module for collecting the resistance signal dout of the current starting resistor, a second signal module for collecting the voltage signal Vout of the current human tissue and the current signal Iout of the current human tissue, the oscillation feedback circuit includes a three-point oscillation circuit 1, an impedance sensor T704, a neutral electrode impedance detection circuit 2, a pat voltage signal generation circuit 3, the first signal circuit comprises a colpitts oscillation circuit 4, a first transformer T001 and a first rectifying and filtering circuit 5, the second signal module comprises a second isolation transformer T002 and a second rectifying and filtering circuit 6 which are connected in parallel at two ends of the output port, and further comprises a third isolation transformer T003 and a third rectifying and filtering circuit 7 which are connected in series at two ends of the output port.
The three-point oscillating circuit 1 is used for generating a positive-going waveform in a self-excitation mode, and can alarm under the condition that the electric knife does not output; the impedance value of the neutral electrode J704 on the negative plate is detected through the impedance sensor T704 and the neutral electrode impedance detection circuit 2, the ohm law shows that the impedance is increased when the area S is reduced, the amplitude of sine wave is increased when the impedance value is increased, the amplitude of a waveform induced by the pat voltage signal generation circuit 3 is also increased at the moment, then the rectification and the filtering are carried out, and finally the obtained pat signal is changed into an analog signal which is changed along with the change of the load; the falling condition of the negative plate can be fed back in real time.
The three-point oscillation circuit 1 comprises a triode Q703, wherein the base electrode of the triode Q703 is connected with one end of a resistor R723, one end of a collector electrode of the triode Q703 is connected with one end of a capacitor C715 and the input end 5 of an impedance sensor T704, one end of an emitter electrode of the capacitor R724 is connected with the other end of the capacitor C715, the other end of the capacitor C715 is also connected with an excitation voltage VDD and the input end 6 of the impedance sensor T704, the excitation voltage VDD is also connected with one end of a resistor R719, the other end of the resistor R724 is connected with the anode of a voltage stabilizing diode D717, the cathode of the voltage stabilizing diode D717 is connected with the other end of the resistor R723 and the other end of the resistor R719, and an electrolytic capacitor C727 is connected between the anode and the cathode of the voltage stabilizing diode D717.
A positive sine waveform is generated by the three-point oscillating circuit 1 in a self-excited mode of the excitation voltage VDD, and an alarm can be guaranteed even if the electric knife does not output.
The neutral electrode impedance detection circuit 2 comprises a capacitor C713, one end of the capacitor C713 is connected with an input end 4 of an impedance sensor T704 and one end of a resistor R718, the other end of the capacitor C713 is connected with one end of a capacitor C718, the other end of the resistor R718 and one end of a resistor R722, the other end of the capacitor C713 is also connected with an output port, the other end of the capacitor C718 is connected with an input end 3 of the impedance sensor T704 and the other end of the resistor R722, and the other end of the resistor R722 and one end of the resistor R718 are connected with a neutral electrode J704 of a negative plate of the high-frequency electric knife.
For detecting the impedance value of the neutral electrode J704 on the negative plate, the positive-going wave amplitude increases as the impedance value increases.
When power is output, the output port inputs power.
The pat voltage signal generating circuit 3 comprises a capacitance-variable diode D716, the positive electrode of the capacitance-variable diode D716 is connected with the output end 2 of the impedance sensor T704, the negative electrode of the capacitance-variable diode D716 is connected with one end of a capacitor C719 and one end of an inductor L706, the other end of the inductor L706 is connected with one end of a capacitor C720 and one end of a resistor R725, the other end of the resistor R725 is connected with the other end of the capacitor C720, the other end of the capacitor C719 and the output end 1 of the impedance sensor T704, the output end 1 of the impedance sensor T704 is also connected with the other end of a resistor R724, the other end of the resistor R725 is also grounded, and one end of the resistor R725 is also connected with a pat voltage signal output port.
Here, the pat voltage signal is output from the pat voltage signal output port and sent to the detection portion.
The positive sine wave amplitude is induced through the output end of the impedance sensor T704, then rectification and filtering are carried out, and finally the pat signal which is changed into an analog signal along with the change of the load is obtained.
The resistance signal dout of the current starting resistor is acquired through a first signal module, and the first signal circuit comprises a colpitts oscillating circuit 4, a first transformer T001 and a first rectifying and filtering circuit 5.
The cobratiz oscillation circuit 1 regularly sends out oscillation pulses, and aims to provide a detection power supply, a changed pulse signal is conducted to the secondary side from the primary side of the first transformer T001, a stable and smooth direct current is obtained after the pulse signal is rectified by a diode of the first rectification filter circuit 5 and filtered by a capacitor, and a corresponding bipolar detection signal is fed back to the single chip microcomputer to be received and control the output of a bipolar port.
The current voltage signal Vout and the current signal Iout of the current human tissue are acquired through a second signal module, and the second signal module comprises a second isolation transformer T002 and a second rectification filter circuit 6 which are connected in parallel at two ends of an output port, and further comprises a third isolation transformer T003 and a third rectification filter circuit 7 which are connected in series at two ends of the output port.
The primary side of a second isolation transformer T002 is connected in parallel with two ends of an output port, high-voltage alternating current is converted into low-voltage alternating current which is connected in series and in parallel through a diode and a resistor of a second rectifying and filtering circuit 6, a low-voltage alternating current signal is rectified and filtered to obtain a direct-current voltage signal which is fed back to the single chip microcomputer, the direct-current voltage signal is Vout, and the current voltage signal of human tissues is collected.
The third isolation transformer T003 is connected in series at two ends of the output port, high-voltage alternating current is changed into low-voltage alternating current, and the low-voltage alternating current is rectified and filtered through the series-parallel connection of the diode and the resistor of the third rectifying and filtering circuit 7 to obtain a direct-current voltage signal which is fed back to the singlechip, wherein the direct-current voltage signal is Iout, and the current signal of the current human tissue is collected.
The circuit principle of the high-frequency operation equipment detection circuit is as follows:
the three-point oscillating circuit 1 is used for generating a positive-going waveform in a self-excitation mode, and can alarm under the condition that the electric knife does not output; the impedance value of the neutral electrode J704 on the negative plate is detected through the impedance sensor T704 and the neutral electrode impedance detection circuit 2, the ohm law shows that the impedance is increased when the area S is reduced, the amplitude of sine wave is increased when the impedance value is increased, the amplitude of a waveform induced by the pat voltage signal generation circuit 3 is also increased at the moment, then the rectification and the filtering are carried out, and finally the obtained pat signal becomes an analog signal which changes along with the change of the load.
The cobratiz oscillation circuit 1 regularly sends out oscillation pulses, and aims to provide a detection power supply, a changed pulse signal is conducted to the secondary side from the primary side of the first transformer T001, a stable and smooth direct current is obtained after the pulse signal is rectified by a diode of the first rectification filter circuit 5 and filtered by a capacitor, and a corresponding bipolar detection signal is fed back to the single chip microcomputer to be received and control the output of a bipolar port.
The primary side of a second isolation transformer T002 is connected in parallel with two ends of an output port, high-voltage alternating current is converted into low-voltage alternating current which is connected in series and in parallel through a diode and a resistor of a second rectifying and filtering circuit 6, a low-voltage alternating current signal is rectified and filtered to obtain a direct-current voltage signal which is fed back to the single chip microcomputer, the direct-current voltage signal is Vout, and the current voltage signal of human tissues is collected.
The third isolation transformer T003 is connected in series at two ends of the output port, high-voltage alternating current is changed into low-voltage alternating current, and the low-voltage alternating current is rectified and filtered through the series-parallel connection of the diode and the resistor of the third rectifying and filtering circuit 7 to obtain a direct-current voltage signal which is fed back to the singlechip, wherein the direct-current voltage signal is Iout, and the current signal of the current human tissue is collected.
To sum up, high frequency operation equipment detection circuitry for gather current start resistance's resistance signal dout, current human tissue's voltage signal Vout, current human tissue's current signal Iout, pat voltage signal, the condition of droing that can real-time feedback negative pole piece is convenient for carry out high frequency electrotome negative plate warning and detect and bipolar coagulation output protection.
Claims (4)
1. A high-frequency operation equipment detection circuit is characterized by comprising an oscillation feedback circuit for collecting pat voltage signals and a first signal module for collecting a resistance signal dout of a current starting resistor, a second signal module for collecting the voltage signal Vout of the current human tissue and the current signal Iout of the current human tissue, the oscillation feedback circuit comprises a three-point oscillation circuit (1), an impedance sensor T704, a neutral electrode impedance detection circuit (2) and a pat voltage signal generation circuit (3), the first signal circuit comprises a colpitts oscillation circuit (4), a first transformer T001 and a first rectifying and filtering circuit (5), the second signal module comprises a second isolation transformer T002 and a second rectifying and filtering circuit (6) which are connected in parallel at two ends of the output port, and further comprises a third isolation transformer T003 and a third rectifying and filtering circuit (7) which are connected in series at two ends of the output port.
2. The high-frequency surgical equipment detection circuit according to claim 1, wherein the three-point oscillation circuit (1) comprises a triode Q703, one end of a resistor R723 is connected to the base of the triode Q703, one end of a capacitor C715 is connected to one end of a collector, one end of an impedance sensor T704 is connected to one end of an impedance sensor T704, one end of an emitter connecting resistor R724 is connected to the other end of the capacitor C715, the other end of the capacitor C715 is further connected to an excitation voltage VDD and an input end 6 of the impedance sensor T704, the excitation voltage VDD is further connected to one end of a resistor R719, the other end of the resistor R724 is connected to the anode of a zener diode D717, the cathode of the zener diode D717 is connected to the other end of the resistor R723 and the other end of the resistor R719, and an electrolytic capacitor C727 is connected between the anode and the cathode of the zener diode D717.
3. An hf-surgery device detection circuit according to claim 1 characterised in that the neutral electrode impedance detection circuit (2) comprises a capacitor C713, one end of the capacitor C713 being connected to the input terminal 4 of the impedance sensor T704 and one end of the resistor R718, the other end of the capacitor C713 being connected to one end of the capacitor C718, the other end of the resistor R718 and one end of the resistor R722, the other end of the capacitor C713 being further connected to an output, the other end of the capacitor C718 being connected to the input terminal 3 of the impedance sensor T704 and the other end of the resistor R722, the other end of the resistor R722 and one end of the resistor R718 being connected to the neutral electrode J704 of the negative plate of the hf-knife.
4. The high-frequency surgical equipment detection circuit according to claim 1, wherein the pat voltage signal generation circuit (3) comprises a capacitance-variable diode D716, the positive pole of the capacitance-variable diode D716 is connected with the output end 2 of the impedance sensor T704, the negative pole of the capacitance-variable diode D716 is connected with one end of a capacitor C719 and one end of an inductor L706, the other end of the inductor L706 is connected with one end of a capacitor C720 and one end of a resistor R725, the other end of the resistor R725 is connected with the other end of the capacitor C720, the other end of the capacitor C719 and the output end 1 of the impedance sensor T704, the output end 1 of the impedance sensor T704 is further connected with the other end of a resistor R724, the other end of the resistor R725 is further grounded, and one end of the resistor R725 is further connected with a pat voltage signal output port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120356060.2U CN215079564U (en) | 2021-02-09 | 2021-02-09 | High-frequency surgical equipment detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120356060.2U CN215079564U (en) | 2021-02-09 | 2021-02-09 | High-frequency surgical equipment detection circuit |
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| CN215079564U true CN215079564U (en) | 2021-12-10 |
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