CN117899384A - Ultrasonic therapeutic instrument acoustic energy output control method, ultrasonic therapeutic instrument acoustic energy output control system and ultrasonic therapeutic head - Google Patents
Ultrasonic therapeutic instrument acoustic energy output control method, ultrasonic therapeutic instrument acoustic energy output control system and ultrasonic therapeutic head Download PDFInfo
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Abstract
The ultrasonic therapeutic instrument acoustic energy output control method, the ultrasonic therapeutic head acoustic energy output control system and the ultrasonic therapeutic head provided by the embodiment of the application judge whether the ultrasonic therapeutic head enters an acoustic coupling preset state or not under the condition that the ultrasonic therapeutic head is in an energy output state; and when the ultrasonic treatment head does not enter the acoustic coupling preset state, controlling the ultrasonic excitation module to stop power output. By adopting the technical scheme of the embodiment of the application, the ultrasonic treatment head is judged to enter the acoustic coupling preset state, and the ultrasonic excitation module is controlled to stop power output when the ultrasonic treatment head does not enter the acoustic coupling preset state, so that the potential safety hazard of scalding skin tissues is avoided when the ultrasonic treatment head cannot be completely coupled with the skin tissues.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to an ultrasonic therapeutic apparatus acoustic energy output control method, an ultrasonic therapeutic apparatus acoustic energy output control system and an ultrasonic therapeutic head.
Background
Ultrasound is used not only for therapy, but also widely for diagnosis, basic and experimental medicine. The ultrasonic wave is sent out by depending on a piezoelectric ultrasonic transducer, and the piezoelectric ultrasonic transducer is a device which can not only convert electric energy into mechanical energy, but also convert the mechanical energy into electric energy and is integrated with the function of transmitting and receiving ultrasonic waves.
The existing ultrasonic therapeutic equipment mainly comprises an equipment main body and an ultrasonic head (or an ultrasonic transducer), wherein the ultrasonic head converts electric energy into mechanical energy, namely, voltage/current output by medical ultrasonic physical therapeutic equipment can be converted into ultrasonic, and the ultrasonic transducer is mainly manufactured based on a piezoelectric wafer. The ultrasonic electric signal with the same frequency as the resonance frequency of the ultrasonic head acts on the ultrasonic treatment head, the ultrasonic treatment head converts the electric energy of the ultrasonic electric signal into ultrasonic mechanical energy to be output, and the mechanical energy acts on skin tissues of a treatment part through the couplant and enters a human body to obtain a treatment effect.
In the actual use process, the ultrasonic treatment head is required to be attached to the skin tissue of the treatment part and is completely coupled with the skin tissue of the treatment part, and when the ultrasonic treatment head cannot be completely coupled with the skin tissue of the treatment part due to the movement of the ultrasonic treatment head in the use process, part of energy of the ultrasonic treatment head is converted into heat energy, so that the ultrasonic treatment head heats, and potential safety hazards of scalding the skin tissue exist.
Disclosure of Invention
The embodiment of the application provides a control method and a control system for acoustic energy output of an ultrasonic therapeutic apparatus and an ultrasonic therapeutic head, which are used for avoiding potential safety hazards of scalding skin tissues when the ultrasonic therapeutic head cannot be completely coupled with the skin tissues of a therapeutic part in the process of contacting the ultrasonic therapeutic head with the skin tissues.
A first aspect of an embodiment of the present application provides a method for controlling acoustic energy output of an ultrasonic therapeutic apparatus, including:
Acquiring a voltage effective value and a current effective value of the current state of the ultrasonic treatment head when the ultrasonic treatment head is in an energy output state;
Determining the current impedance of the transducer of the ultrasonic treatment head according to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters an acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head;
and when the ultrasonic treatment head does not enter the acoustic coupling preset state, controlling the ultrasonic excitation module to stop power output.
In one implementation, the step of determining whether the ultrasound therapy head enters the acoustic coupling preset state according to the current impedance of the transducer of the ultrasound therapy head includes:
acquiring an acoustic coupling impedance threshold, and if the current impedance of the transducer of the ultrasonic treatment head is greater than or equal to the acoustic coupling impedance threshold, enabling the ultrasonic treatment head to enter an acoustic coupling preset state; if the current impedance of the transducer of the ultrasonic treatment head is smaller than the threshold value of the acoustic coupling impedance, the ultrasonic treatment head does not enter the preset acoustic coupling state.
In one implementation, the step of determining whether the ultrasound therapy head enters the acoustic coupling preset state according to the current impedance of the transducer of the ultrasound therapy head includes:
Acquiring an acoustic coupling impedance threshold value, and determining a value of a current acoustic coupling state of the ultrasonic treatment head according to the current impedance of the transducer of the ultrasonic treatment head and the acoustic coupling impedance threshold value;
if the value of the current acoustic coupling state is greater than or equal to the preset value, the ultrasonic treatment head enters the acoustic coupling preset state; when the value of the current acoustic coupling state is smaller than the preset value, the ultrasonic treatment head does not enter the acoustic coupling preset state.
In one implementation, the value of the acoustic coupling state of the ultrasound therapy head is obtained using the following model:
Scoupling＝Uback/(Iback×Zthres)
wherein: s coupling is the value of the acoustic coupling state, and U back is the effective voltage value; i back is the effective value of the current; z thre s is the acoustic coupling impedance threshold.
In one implementation, the method further comprises: acquiring current output sound power and set output sound power of the ultrasonic treatment head when the ultrasonic treatment head is in an energy output state, and determining the change rate of the current output sound power relative to the set output sound power;
If the change rate is larger than the set threshold, acquiring a voltage effective value of the ultrasonic treatment head, and determining a new ultrasonic excitation voltage according to the current output sound power, the set output sound power, the voltage effective value and the power coefficient;
The control excitation voltage control module outputs a new ultrasonic excitation voltage.
In one implementation, the new ultrasound excitation voltage is obtained using the following model:
Wherein:
U change is the new ultrasonic excitation voltage, α is the power coefficient, U back is the voltage effective value, P set is the set output acoustic power, and P now is the current output acoustic power.
In one implementation, the method includes: when the ultrasonic treatment head does not enter the acoustic coupling preset state, the acoustic coupling state indicating module indicates that the current ultrasonic treatment head is not in the acoustic coupling preset state, and when the ultrasonic treatment head enters the acoustic coupling preset state, the acoustic coupling state indicating module indicates that the current ultrasonic treatment head is in the acoustic coupling preset state.
In one implementation, the method includes: acquiring characteristic information of an ultrasonic treatment head, wherein the characteristic information of the ultrasonic treatment head at least comprises: ultrasonic treatment head operating frequency, acoustic coupling impedance threshold, power coefficient or electromechanical conversion efficiency;
The ultrasonic frequency control module is controlled to generate corresponding ultrasonic treatment head working frequency, and the excitation voltage module is controlled to generate corresponding excitation voltage, so that sinusoidal ultrasonic excitation signals with set power are generated.
In one implementation, when the ultrasound therapy head is not in the acoustic coupling state, further comprising:
adjusting the ultrasonic treatment head end surface control knob to adjust the joint angle of the ultrasonic treatment head and the tissue plane.
A second aspect of an embodiment of the present application provides an acoustic energy output control system for an ultrasonic therapeutic apparatus, including: an ultrasonic excitation module and a voltage and current feedback module which are connected with the ultrasonic treatment head;
the voltage and current feedback module is connected with a main control module through a communication module, the main control module is connected with an ultrasonic frequency control module and an excitation voltage control module, and the ultrasonic frequency control module and the excitation voltage control module are both connected with the ultrasonic excitation module;
The master control module is configured to:
Acquiring a voltage effective value and a current effective value of the current state of the ultrasonic treatment head when the ultrasonic treatment head is in an energy output state;
Determining the current impedance of the transducer of the ultrasonic treatment head according to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters an acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head;
When the ultrasonic treatment head does not enter the acoustic coupling preset state, the main control module controls the excitation voltage control module to stop voltage output so that the ultrasonic excitation module stops power output.
A third aspect of embodiments of the present application provides an adjustable adsorption type ultrasonic treatment head, comprising an ultrasonic transducer disposed inside a suction cup;
The top of the ultrasonic transducer is provided with an adjusting device capable of driving the ultrasonic transducer to move so as to adjust the distance between the bottom of the ultrasonic transducer and the bottom of the sucker.
In one implementation, the adjusting device comprises a control rod, one end of the control rod is positioned outside the shell of the sucker, and the other end of the control rod penetrates through the shell of the sucker and is connected with the ultrasonic transducer;
the control rod can realize axial movement relative to the shell of the sucker, and the axial movement refers to movement along the axial direction of the control rod.
In one implementation, the control rod is a screw rod and is threadably connected to the housing of the suction cup; the tail end of the control rod is provided with a fixing rod which is detachably connected, and the fixing rod is arranged on the ultrasonic transducer.
In one implementation, the ultrasound transducer is provided with a retaining ring at the bottom and the end of the retaining ring protrudes out of the lower surface of the ultrasound transducer for securing the gel sheet.
In one implementation, the ultrasonic transducer includes upper and lower covers that cooperate with each other; the inner surface of the lower cover is provided with a piezoelectric element.
The embodiment of the application provides an ultrasonic therapeutic apparatus acoustic energy output control method, an ultrasonic therapeutic head, an ultrasonic therapeutic apparatus acoustic energy output control system and an ultrasonic therapeutic head, wherein the ultrasonic therapeutic head is in an energy output state to acquire a voltage effective value and a current effective value of the current state of the ultrasonic therapeutic head; determining the current impedance of the transducer of the ultrasonic treatment head according to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters an acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head; and when the ultrasonic treatment head does not enter the acoustic coupling preset state, controlling the ultrasonic excitation module to stop power output. By applying the technical scheme of the embodiment of the application, the current impedance of the transducer of the ultrasonic treatment head is calculated in real time, whether the ultrasonic treatment head enters the acoustic coupling preset state is judged according to the current impedance of the transducer of the ultrasonic treatment head, and when the ultrasonic treatment head does not enter the acoustic coupling preset state, the ultrasonic excitation module is controlled to stop power output, so that the potential safety hazard of scalding skin tissues is avoided when the ultrasonic treatment head cannot be completely coupled with the skin tissues.
Drawings
In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of an ultrasonic apparatus with a multifunctional treatment head according to an embodiment of the present application;
Fig. 2 is a schematic diagram of an ultrasonic treatment head according to an embodiment of the present application entering an acoustic coupling preset state;
FIG. 3 is a schematic diagram of an ultrasound therapy head according to an embodiment of the present application not entering an acoustic coupling preset state;
FIG. 4 is a schematic flow chart of a method for controlling the acoustic energy output of an ultrasonic therapeutic apparatus according to an embodiment of the present application;
FIG. 5 is a flow chart of another embodiment of a method for controlling the acoustic energy output of an ultrasonic therapeutic apparatus according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an ultrasonic therapeutic apparatus acoustic energy output control system according to an embodiment of the present application;
Fig. 7 is a schematic structural diagram of an adjustable adsorption ultrasonic treatment head according to an embodiment of the present application
Fig. 8 is a diagram of experimental results of determining that an ultrasonic therapy head provided in an embodiment of the present application does not enter an acoustic coupling preset state;
Fig. 9 is a diagram of experimental results of determining that an ultrasonic treatment head enters an acoustic coupling preset state according to an embodiment of the present application.
In the figure:
1-sucking disc, 2-ultrasonic transducer, 21-fixed ring, 22-upper cover, 23-lower cover, 24-piezoelectric element, 3-adjusting device, 31-control rod, 32-fixed rod, 4-host, 41-tracheal female plug, 42-cable connector female end, 5-hand-held large-area ultrasonic treatment head, 51-first cable connector male end, 52-ultrasonic treatment head indicator lamp, 6-hand-held small-area ultrasonic treatment head, 61-second cable connector male end, 7-adsorption ultrasonic treatment head, 71-tracheal male plug, 72-third cable connector male end, 8-equipment generator; 610-a main control module, 611-an acoustic power calculation module, 612-an acoustic coupling state judgment module, 620-a voltage and current feedback module, 630-a communication module, 610-an ultrasonic frequency control module, 650-an excitation voltage module and 660-an ultrasonic excitation module.
Detailed Description
In order to more clearly illustrate the method for controlling the acoustic energy output of the ultrasonic therapeutic apparatus provided by the embodiment of the present application, the embodiment of the present application first introduces an ultrasonic apparatus to which the method for controlling the acoustic energy output of the ultrasonic therapeutic apparatus can be applied, as shown in fig. 1, which is a schematic structural diagram of an ultrasonic apparatus with a multifunctional therapeutic head, including: the host computer 4 outputs ultrasonic signals to the multifunctional ultrasonic treatment heads and controls the corresponding ultrasonic treatment heads to work; for example, the first cable connector male end 51 of the hand-held large area ultrasound therapy head 5 is detachably electrically connected to one cable connector female end 42 of the host computer 4; the second cable connector male end 61 of the hand-held small-area ultrasound therapy head 6 is detachably and electrically connected to the other cable connector female end 42 of the host 4; the male tracheal plug 71 of the suction ultrasonic therapy head 7 is detachably and mechanically connected to the female tracheal plug 41 of the host computer 4, and the male end 72 of the third cable connector of the suction ultrasonic therapy head 7 is detachably and electrically connected to the female end 42 of the cable connector of the device generator 8. All the three ultrasonic treatment heads can be independently connected to an ultrasonic treatment equipment generator 8 and independently driven to work; or two-by-two combinations, respectively connected to the host 4 and simultaneously outputting the treatment in two channels.
Taking the hand-held large-area ultrasonic treatment head 5 as an example, when the hand-held large-area ultrasonic treatment head 5 is used for treating skin tissues, when the ultrasonic treatment head is in the state of fig. 2, namely, the ultrasonic treatment head is completely contacted with the skin tissues and is attached, the ultrasonic treatment head indicator light displays green, and the ultrasonic treatment head starts ultrasonic energy output; when the ultrasound therapy head is in the state of fig. 3, i.e., the ultrasound therapy head is not fully in contact with the skin tissue, the ultrasound therapy head indicator light shows yellow, and the ultrasound therapy head stops the ultrasound energy output.
An embodiment of the present application provides a method for controlling energy output of an ultrasonic therapeutic apparatus, where the method for controlling energy output of an ultrasonic therapeutic apparatus is applied to an ultrasonic therapeutic apparatus acoustic energy output control system, as shown in fig. 4, and includes steps 410 to 430.
Step 410, obtaining the effective voltage value and the effective current value of the current state of the ultrasonic treatment head when the ultrasonic treatment head is in the energy output state.
The voltage and current feedback module is used for feeding back the voltage effective value and the current effective value of the current state of the ultrasonic treatment head to the main control module, so that the voltage effective value and the current effective value of the current state of the ultrasonic treatment head can be obtained in real time or timely, and the voltage effective value and the current effective value of the current state of the ultrasonic treatment head can be obtained in real time.
Step 420, determining the current impedance of the transducer of the ultrasonic treatment head according to the effective voltage value and the effective current value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters the acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head.
The preset acoustic coupling state refers to that the ultrasonic treatment head is completely contacted and attached to skin tissue, specifically, the current impedance of the transducer of the ultrasonic treatment head is the ratio of the effective voltage value to the effective current value, in the practical application process, whether the ultrasonic treatment head enters the preset acoustic coupling state can be determined directly according to the current impedance of the transducer, for example, the current impedance of the transducer is compared with an acoustic coupling impedance threshold value, and if the current impedance of the transducer of the ultrasonic treatment head is greater than or equal to the acoustic coupling impedance threshold value, the ultrasonic treatment head enters the preset acoustic coupling state; if the current impedance of the transducer of the ultrasonic treatment head is smaller than the threshold value of the acoustic coupling impedance, the ultrasonic treatment head does not enter the preset acoustic coupling state.
In the practical application process, a first impedance of the ultrasonic transducer when the ultrasonic treatment head enters the preset acoustic coupling state is measured in advance, a second impedance of the ultrasonic transducer when the ultrasonic treatment head does not enter the preset acoustic coupling state is measured, and an acoustic coupling impedance threshold is set according to the first impedance and the second impedance.
As shown in fig. 8 and 9, in the figures, the horizontal axis of the coordinate axis represents the ultrasonic frequency, curve a represents the current impedance of the transducer, and curve B represents the phase θ; the difference point between the two graphs is the minimum value of the impedance, and the minimum value of the impedance in the non-acoustic coupling preset state is smaller than the minimum value of the impedance in the acoustic coupling preset state, so that a certain value between the minimum value of the impedance in the non-coupling state and the minimum value of the impedance in the coupling state is taken, for example, the average value of the minimum value of the impedance in the non-coupling state and the minimum value of the impedance in the coupling state is taken as the impedance threshold value in the coupling state.
In the actual application process, the value of the current acoustic coupling state of the ultrasonic treatment head can be determined directly according to the current impedance of the transducer, and whether the ultrasonic treatment head enters an acoustic coupling preset state is judged; for example, an acoustic coupling impedance threshold is obtained, and a value of a current acoustic coupling state of the ultrasound therapy head is determined from a current impedance of a transducer of the ultrasound therapy head and the acoustic coupling impedance threshold; if the value of the current acoustic coupling state is greater than or equal to the preset value, the ultrasonic treatment head enters the acoustic coupling preset state; when the value of the current acoustic coupling state is smaller than the preset value, the ultrasonic treatment head does not enter the acoustic coupling preset state.
It should be noted that, the current acoustic coupling state of the ultrasonic therapy head may be determined directly according to the current impedance, the voltage effective value and the current effective value of the transducer, and whether the ultrasonic therapy head enters the acoustic coupling preset state may be determined according to the current acoustic coupling state of the ultrasonic therapy head, where the current acoustic coupling state may be obtained according to the output result of the model, or may be obtained according to a table look-up mode, where when the table look-up mode is adopted, a table of relations between the current acoustic coupling state and the voltage effective value, the current effective value and the acoustic coupling impedance threshold of the current acoustic coupling state of the ultrasonic therapy head needs to be constructed in advance.
When the model output result is adopted to obtain the value of the acoustic coupling state, the value of the acoustic coupling state is obtained by adopting the following model:
Scoupling＝Uback/(Iback×Zthres)；
Wherein: s coupling is the value of the acoustic coupling state, and U back is the effective voltage value; i back is the effective value of the current; z thres is the acoustic coupling impedance threshold.
And 430, controlling the ultrasonic excitation module to stop power output when the ultrasonic treatment head does not enter the acoustic coupling preset state.
When the ultrasonic treatment head does not enter the acoustic coupling preset state, the situation that the ultrasonic treatment head is not fully contacted with skin tissues in fig. 3 may occur, and part of energy of the ultrasonic treatment head is converted into heat energy, so that the ultrasonic treatment head is heated, potential safety hazards of scalding the skin tissues exist, at the moment, the ultrasonic excitation module is controlled to stop power output, and the situation of scalding the skin tissues can be effectively avoided.
According to the method for controlling the acoustic energy output of the ultrasonic therapeutic apparatus, provided by the embodiment of the application, when an ultrasonic therapeutic head is in an energy output state, a voltage effective value and a current effective value of the current state of the ultrasonic therapeutic head are obtained; determining the current impedance of the transducer of the ultrasonic treatment head according to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters an acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head; and when the ultrasonic treatment head does not enter the acoustic coupling preset state, controlling the ultrasonic excitation module to stop power output. By applying the technical scheme of the embodiment of the application, the current impedance of the transducer of the ultrasonic treatment head is calculated in real time, whether the ultrasonic treatment head enters the acoustic coupling preset state is judged according to the current impedance of the transducer of the ultrasonic treatment head, and when the ultrasonic treatment head does not enter the acoustic coupling preset state, the ultrasonic excitation module is controlled to stop power output, so that the potential safety hazard of scalding skin tissues is avoided when the ultrasonic treatment head cannot be completely coupled with the skin tissues.
Fig. 5 is a flowchart of another embodiment of an ultrasonic therapeutic apparatus acoustic energy output control method according to an embodiment of the present application, which is performed by an ultrasonic therapeutic apparatus acoustic energy output control system. As shown in fig. 5, the ultrasonic therapeutic apparatus acoustic energy output control method includes the steps of:
Step 510, obtaining the current output sound power and the set output sound power of the ultrasonic treatment head when the ultrasonic treatment head is in the energy output state, and determining the change rate of the current output sound power relative to the set output sound power.
The current output sound power is calculated according to the received voltage effective value and the received current effective value, and the change rate of the current output sound power relative to the set output sound power is calculated. Wherein, the change rate of the current output sound power relative to the set output sound power means: the ratio of the difference value of the current output sound power and the set output sound power to the set output sound power can be directly calculated in the actual application process, and the ratio of the current output sound power to the set output sound power is used as a judgment standard.
In the scheme of using the change rate of the current output sound power with respect to the set output sound power, the value of the change rate may be less than or equal to 0.
Step 520, if the rate of change is greater than the set threshold, obtaining a voltage effective value of the ultrasonic therapy head, and determining a new ultrasonic excitation voltage according to the current output sound power, the set output sound power, the voltage effective value and the power coefficient.
The threshold value is determined according to actual equipment and use situations, for example, the threshold value is set to be 5%, 10% or other values meeting requirements, when the change rate is larger than the threshold value, the stability of the output power of the ultrasonic treatment head is poor, and at the moment, a new ultrasonic excitation voltage is determined according to the current output sound power, the set output sound power, the voltage effective value and the power coefficient.
In step 530, the excitation voltage control module is controlled to output a new ultrasonic excitation voltage.
The method and the device have the advantages that when the ultrasonic treatment head is in an energy output state, the current output sound power and the set output sound power of the ultrasonic treatment head can be obtained in real time, and the current output sound power and the set output sound power of the ultrasonic treatment head can also be obtained in a timing mode.
Wherein, the new ultrasonic excitation voltage is obtained by adopting the following model:
Wherein:
U change is the new ultrasonic excitation voltage, α is the power coefficient, U back is the voltage effective value, P set is the set output acoustic power, and P now is the current output acoustic power.
Of course, in the technical scheme provided by the embodiment of the application, the method is not limited to obtaining the new ultrasonic excitation voltage by using the model, and the new ultrasonic excitation voltage can be determined by a pre-established data table.
According to the method for controlling the sound energy output of the ultrasonic therapeutic instrument, provided by the embodiment of the application, the current output sound power of the ultrasonic therapeutic head is calculated in real time, and when the output sound power is changed greatly, the sound power output is adjusted, so that a sufficient amount of ultrasonic dosage exists in the therapeutic process of a patient, the patient cannot receive the ultrasonic dosage exceeding the range, and the effectiveness and the safety of the therapeutic process are ensured.
It should be noted that, since the ultrasound apparatus applied in the embodiment of the present application has a plurality of ultrasound treatment heads with different functions, before use, the feature information of the ultrasound treatment head needs to be acquired from the treatment head feature parameter module, where the feature information of the ultrasound treatment head at least includes: ultrasonic treatment head operating frequency, acoustic coupling impedance threshold, power coefficient or electromechanical conversion efficiency; then, the ultrasonic frequency control module is controlled to generate corresponding ultrasonic treatment head working frequency, and the excitation voltage module is controlled to generate corresponding excitation voltage, so that sinusoidal ultrasonic excitation signals with set power are generated.
In the embodiment of the application, an acoustic coupling state indicating module is arranged at a position which is easy to observe by an operator, when the ultrasonic treatment head does not enter the acoustic coupling preset state, the acoustic coupling state does not enter the acoustic coupling preset state, and when the ultrasonic treatment head enters the acoustic coupling preset state, the acoustic coupling state indicating module currently enters the acoustic coupling preset state. For example, the two different indicator lamps respectively indicate that the ultrasonic treatment head does not enter the acoustic coupling preset state or the ultrasonic treatment head enters the acoustic coupling preset state, or the different display colors of the one indicator lamp respectively indicate that the ultrasonic treatment head does not enter the acoustic coupling preset state or the ultrasonic treatment head enters the acoustic coupling preset state, and correspondingly, the ultrasonic treatment head is arranged on the end face leveling knob so as to adjust the end face leveling knob of the ultrasonic treatment head when the ultrasonic treatment head does not enter the acoustic coupling state, thereby adjusting the fitting angle of the ultrasonic treatment head and the tissue plane.
Therefore, the contact condition of the ultrasonic treatment head and the affected part is indicated through the acoustic coupling state, the couplant is timely supplemented to the affected part or the contact angle between the end face of the ultrasonic treatment head and the affected part is adjusted, the ultrasonic treatment head end face is convenient to use by operators, the position of the ultrasonic treatment head end face is adjusted through the ultrasonic treatment head end face leveling knob, the current coupling state is indicated in real time through the acoustic coupling state indication module, the operators are ensured to quickly enter the acoustic coupling state when using the adsorption ultrasonic treatment head, and the operators use the adsorption ultrasonic treatment head more conveniently.
A second aspect of an embodiment of the present application provides an ultrasonic therapeutic apparatus acoustic energy output control system, as shown in fig. 6, the ultrasonic therapeutic apparatus acoustic energy output control system 600 includes: a main control module 610, a voltage and current feedback module 620, a communication module 630, an ultrasonic frequency control module 640, an excitation voltage module 650 and an ultrasonic excitation module 660.
The ultrasonic excitation module 660 and the voltage and current feedback module 620 are connected with an ultrasonic treatment head; the main control module 610 is connected with the voltage and current feedback module 620 through the communication module 630, the main control module 610 is connected with the ultrasonic frequency control module 640 and the excitation voltage module 650, and the output ends of the ultrasonic frequency control module 640 and the excitation voltage module 650 are connected with the ultrasonic excitation module 660.
The master control module 610 is configured to:
And acquiring a voltage effective value and a current effective value of the current state of the ultrasonic treatment head in real time through a voltage and current feedback module when the ultrasonic treatment head is in an energy output state.
According to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, determining the current impedance of the transducer of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters the acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head.
And when the ultrasonic treatment head does not enter the acoustic coupling preset state, controlling the ultrasonic excitation module to stop power output.
In an alternative manner, the main control module 610 further includes an acoustic power calculation module 611 and an acoustic coupling state determination module 612.
The acoustic power calculation module 611 is configured to calculate a current output acoustic power of the ultrasound therapy head, and calculate a rate of change of the current output acoustic power relative to a set output acoustic power.
The acoustic coupling state judging module 612 is configured to determine a current acoustic coupling state of the ultrasound therapy head according to the voltage effective value, the current effective value, and the acoustic coupling impedance threshold of the current state of the ultrasound therapy head, and judge whether the therapy head enters an acoustic coupling preset state according to the current acoustic coupling state of the ultrasound therapy head.
A third aspect of the embodiments of the present application provides an adjustable adsorption type ultrasonic treatment head, as shown in fig. 7, the adjustable adsorption type ultrasonic treatment head includes an ultrasonic transducer 2 disposed inside a suction cup 1; the top of the ultrasonic transducer 2 is provided with an adjusting device 3 which can drive the ultrasonic transducer 2 to move so as to adjust the distance between the bottom of the ultrasonic transducer 2 and the bottom of the sucker 1.
Thus, when the coupling state of the ultrasonic treatment head and skin tissues needs to be adjusted, the ultrasonic transducer 2 is driven to move by the adjusting device 3, so that the distance between the bottom of the ultrasonic transducer 2 and the bottom of the sucker 1 is adjusted.
As shown in fig. 7, the ultrasonic transducer 2 includes an upper cover 22 and a lower cover 23 that are fitted to each other; the inner surface of the lower cover 23 is provided with a piezoelectric element 24.
Specifically, the adjusting device 3 includes a control rod 31, one end of the control rod 31 is located outside the shell of the suction cup 1, and the other end penetrates through the shell of the suction cup 1 and is connected with the upper cover 22 of the ultrasonic transducer 2; the control rod 31 is axially movable relative to the housing of the suction cup 1, which axial movement means movement in the axial direction of the control rod 31.
In order to achieve axial movement of the control rod 31 relative to the housing of the suction cup 1, in some embodiments of the application the control rod 31 is a screw threadably connectable to the housing of the suction cup 1; the control rod 31 is provided at its end with a detachably connected fixing rod 32, the fixing rod 32 being arranged on the ultrasonic transducer 2.
In the practical application process, in order to facilitate rotating the control rod 31, as shown in fig. 7, the adjusting device 3 further includes a control knob 33, where the control knob 33 is connected to an end of the control rod 31, or the control knob 33 is integrally formed at an end of the control rod 31, so that when the position of the ultrasonic transducer 2 needs to be adjusted, the ultrasonic transducer 2 is driven to move by rotating the control knob 33.
Of course, in practical application, the control rod 31 is not limited to control the motion of the ultrasonic transducer 2, and may be implemented in other manners, for example, the motion of the ultrasonic transducer 2 is controlled by a traction rope, and at this time, since the traction rope is made of a soft material, the traction rope needs to be arranged in both directions of the ultrasonic transducer 2.
Further, the bottom of the ultrasonic transducer 2 is provided with a fixing ring 21, and an end portion of the fixing ring 21 protrudes from the lower surface of the ultrasonic transducer 2 for fixing the gel sheet.
When the adsorption type ultrasonic treatment head is applied to a position which is easy to fix, such as an arm or a leg, a low negative pressure (0-20 Kpa) state is generally adopted, whether the adsorption type ultrasonic treatment head enters a preset acoustic coupling state is judged through an acoustic coupling function, and if the adsorption type ultrasonic treatment head does not enter the preset acoustic coupling state, the ultrasonic transducer 2 is controlled to move through the adjusting device 3, so that the ultrasonic transducer 2 is fully contacted with the surface of skin tissue, and the adsorption type ultrasonic treatment head enters the preset acoustic coupling state; when the adsorption type ultrasonic treatment head is applied to a position which is not easy to fix, such as the chest and the back, a high negative pressure (20-35 Kpa) state is generally adopted, whether the ultrasonic treatment head enters the preset acoustic coupling state is judged through the acoustic coupling function, and if the ultrasonic treatment head enters the preset acoustic coupling state, the ultrasonic transducer 2 is controlled to move through the adjusting device 3, so that the ultrasonic transducer 2 is not clung to the surface of skin tissues, the adsorbed pain is reduced, and the deformation of a supporting layer at the lower part of the silica gel sucker is prevented.
The foregoing detailed description of the application has been presented for purposes of illustration and description, and it should be understood that the foregoing is by way of illustration and description only, and is not intended to limit the scope of the application.
Claims (15)
1. An ultrasonic therapeutic apparatus acoustic energy output control method, characterized by comprising:
Acquiring a voltage effective value and a current effective value of the current state of the ultrasonic treatment head when the ultrasonic treatment head is in an energy output state;
Determining the current impedance of the transducer of the ultrasonic treatment head according to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters an acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head;
and when the ultrasonic treatment head does not enter the acoustic coupling preset state, controlling the ultrasonic excitation module to stop power output.
2. The method according to claim 1, wherein the step of determining whether the ultrasonic therapy head enters the acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic therapy head comprises:
acquiring an acoustic coupling impedance threshold, and if the current impedance of the transducer of the ultrasonic treatment head is greater than or equal to the acoustic coupling impedance threshold, enabling the ultrasonic treatment head to enter an acoustic coupling preset state; if the current impedance of the transducer of the ultrasonic treatment head is smaller than the threshold value of the acoustic coupling impedance, the ultrasonic treatment head does not enter the preset acoustic coupling state.
3. The method according to claim 1, wherein the step of determining whether the ultrasonic therapy head enters the acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic therapy head comprises:
Acquiring an acoustic coupling impedance threshold value, and determining a value of a current acoustic coupling state of the ultrasonic treatment head according to the current impedance of the transducer of the ultrasonic treatment head and the acoustic coupling impedance threshold value;
if the value of the current acoustic coupling state is greater than or equal to the preset value, the ultrasonic treatment head enters the acoustic coupling preset state; when the value of the current acoustic coupling state is smaller than the preset value, the ultrasonic treatment head does not enter the acoustic coupling preset state.
4. A method of controlling acoustic energy output of an ultrasonic therapeutic apparatus according to claim 3, wherein the value of the current acoustic coupling state of the ultrasonic therapeutic head is obtained using the following model:
Scoupling＝Uback/(Iback×Zthres)
Wherein: s coupling is the value of the acoustic coupling state, and U back is the effective voltage value; i back is the effective value of the current; z thres is the acoustic coupling impedance threshold.
5. The method of controlling the acoustic energy output of an ultrasonic therapeutic apparatus according to claim 1, further comprising:
Acquiring current output sound power and set output sound power of the ultrasonic treatment head when the ultrasonic treatment head is in an energy output state, and determining the change rate of the current output sound power relative to the set output sound power;
If the change rate is larger than the set threshold, acquiring a voltage effective value of the ultrasonic treatment head, and determining a new ultrasonic excitation voltage according to the current output sound power, the set output sound power, the voltage effective value and the power coefficient;
The control excitation voltage control module outputs a new ultrasonic excitation voltage.
6. The method of claim 5, wherein the new ultrasonic excitation voltage is obtained using the following model:
Wherein: u change is the new ultrasonic excitation voltage, α is the power coefficient, U back is the voltage effective value, P set is the set output acoustic power, and P now is the current output acoustic power.
7. The method of controlling the acoustic energy output of an ultrasonic therapeutic apparatus according to claim 1, comprising:
When the ultrasonic treatment head does not enter the acoustic coupling preset state, the acoustic coupling state indicating module indicates that the current ultrasonic treatment head is not in the acoustic coupling preset state, and when the ultrasonic treatment head enters the acoustic coupling preset state, the acoustic coupling state indicating module indicates that the current ultrasonic treatment head is in the acoustic coupling preset state.
8. The method of controlling the acoustic energy output of an ultrasonic therapeutic apparatus according to claim 1, comprising:
acquiring characteristic information of an ultrasonic treatment head, wherein the characteristic information of the ultrasonic treatment head at least comprises: ultrasonic treatment head operating frequency, acoustic coupling impedance threshold, power coefficient or electromechanical conversion efficiency;
The ultrasonic frequency control module is controlled to generate corresponding ultrasonic treatment head working frequency, and the excitation voltage module is controlled to generate corresponding excitation voltage, so that sinusoidal ultrasonic excitation signals with set power are generated.
9. The method of claim 1, further comprising, when the ultrasound therapy head is not in the acoustically coupled state:
adjusting the ultrasonic treatment head end surface control knob to adjust the joint angle of the ultrasonic treatment head and the tissue plane.
10. An ultrasonic therapeutic apparatus acoustic energy output control system, comprising: an ultrasonic excitation module and a voltage and current feedback module which are connected with the ultrasonic treatment head;
the voltage and current feedback module is connected with a main control module through a communication module, the main control module is connected with an ultrasonic frequency control module and an excitation voltage control module, and the ultrasonic frequency control module and the excitation voltage control module are both connected with the ultrasonic excitation module;
The master control module is configured to:
Acquiring a voltage effective value and a current effective value of the current state of the ultrasonic treatment head when the ultrasonic treatment head is in an energy output state;
Determining the current impedance of the transducer of the ultrasonic treatment head according to the voltage effective value and the current effective value of the current state of the ultrasonic treatment head, and judging whether the ultrasonic treatment head enters an acoustic coupling preset state according to the current impedance of the transducer of the ultrasonic treatment head;
When the ultrasonic treatment head does not enter the acoustic coupling preset state, the main control module controls the excitation voltage control module to stop voltage output so that the ultrasonic excitation module stops power output.
11. An adjustable adsorption ultrasonic treatment head is characterized by comprising an ultrasonic transducer (2) arranged in a sucker (1);
the top of the ultrasonic transducer (2) is provided with an adjusting device (3) which can drive the ultrasonic transducer (2) to move so as to adjust the distance between the bottom of the ultrasonic transducer (2) and the bottom of the sucker (1).
12. An adjustable suction ultrasonic treatment head according to claim 11, characterized in that the adjustment means (3) comprise a control rod (31), one end of the control rod (31) being outside the housing of the suction cup (1) and the other end penetrating the housing of the suction cup (1) and being connected to the ultrasonic transducer (2);
The control rod (31) can realize axial movement relative to the shell of the sucker (1), and the axial movement refers to movement along the axial direction of the control rod (31).
13. An adjustable suction ultrasonic treatment head according to claim 12, characterized in that the control rod (31) is a screw and is threadably connected to the housing of the suction cup (1); the tail end of the control rod (31) is provided with a fixing rod (32) which is detachably connected, and the fixing rod (32) is arranged on the ultrasonic transducer (2).
14. An adjustable adsorption ultrasound therapy head according to claim 11, wherein the ultrasound transducer (2) is provided with a fixation ring (21) at the bottom and the end (21) of the fixation ring protrudes from the lower surface of the ultrasound transducer (2) for fixation of the gel sheet.
15. An adjustable adsorption ultrasound therapy head according to claim 11, wherein the ultrasound transducer (2) comprises an upper cover (22) and a lower cover (23) that cooperate with each other; the inner surface of the lower cover (23) is provided with a piezoelectric element (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311870922.3A CN117899384A (en) | 2023-12-29 | 2023-12-29 | Ultrasonic therapeutic instrument acoustic energy output control method, ultrasonic therapeutic instrument acoustic energy output control system and ultrasonic therapeutic head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311870922.3A CN117899384A (en) | 2023-12-29 | 2023-12-29 | Ultrasonic therapeutic instrument acoustic energy output control method, ultrasonic therapeutic instrument acoustic energy output control system and ultrasonic therapeutic head |
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| Publication Number | Publication Date |
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| CN117899384A true CN117899384A (en) | 2024-04-19 |
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| CN202311870922.3A Pending CN117899384A (en) | 2023-12-29 | 2023-12-29 | Ultrasonic therapeutic instrument acoustic energy output control method, ultrasonic therapeutic instrument acoustic energy output control system and ultrasonic therapeutic head |
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| Country | Link |
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| CN (1) | CN117899384A (en) |
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2023
- 2023-12-29 CN CN202311870922.3A patent/CN117899384A/en active Pending
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