CN203468630U - Ultrasonic surgery system - Google Patents
Ultrasonic surgery system Download PDFInfo
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- CN203468630U CN203468630U CN201320312812.0U CN201320312812U CN203468630U CN 203468630 U CN203468630 U CN 203468630U CN 201320312812 U CN201320312812 U CN 201320312812U CN 203468630 U CN203468630 U CN 203468630U
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Abstract
The utility model provides an ultrasonic surgery system. The ultrasonic surgery system comprises an ultrasonic work unit, a waveform generation unit connected with the ultrasonic work unit and used for providing an electrical signal for the ultrasonic work unit, and a control unit including an acquisition module, a control module and a PWM signal generation module, wherein the acquisition module acquires the electrical signal output by the waveform generation unit and provides the electrical signal to the control module, the control module obtains a corresponding electrical parameter from the currently acquired electrical signal, and generates an instruction for the waveform generation unit to adjust the output power and frequency of the electrical signal according to the obtained electrical parameter, then, the PWM signal generator adjusts a PWM signal transmitted to the waveform generation unit step by step according to the instruction, so that the output power and/or frequency of the waveform generation unit is adjusted correspondingly. The ultrasonic surgery system can adjust the power and the frequency of the waveform generation unit at the same time according to the obtained electrical parameter, thereby effectively reducing hardware costs.
Description
Technical field
This utility model relates to a kind of ultrasonic surgical system.
Background technology
Ultrasonic surgical system makes working head produce mechanical movement by converting electric energy to mechanical energy, and human body is carried out to surgical diagnosis and treatment.In order to meet ultrasonic surgical system in the requirement of medical field work, what ultrasonic surgical system needs can be controlled makes mechanical movement.To achieve these goals, ultrasonic surgical system comprises: power supply unit, waveform generating unit and ultrasonic working cell and control unit.Control unit 14 in current ultrasonic surgical system, as shown in Figure 1, it comprises: the analysis and processing module 141 being connected with power supply unit, and the hardware phase-locked-loop 142 being connected with waveform generating unit, described analysis and processing module 141 is adjusted the DC current of power supply unit output according to default electrical quantity, waveform generating unit changes wave form varies according to the variation of described DC current, described hardware phase-locked-loop 142 is adjusted the frequency of waveform according to described wave form varies, change thus the electric energy of ultrasonic working cell input, make ultrasonic working cell adjust mechanical transformation of energy according to the electric energy changing, and provide mechanical movement in various degree.
Yet current ultrasonic surgical system, owing to having used independently hardware phase-locked-loop and the peripheral analog devices such as resistance capacitance thereof, is easily subject to the factor impacts such as environmental aging, simultaneously, Power Regulation signal and FM signal are separately to produce, and structure is comparatively complicated, and governing speed and efficiency are restricted.Therefore, need to improve existing ultrasonic surgical system.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of ultrasonic surgical system, for solving the problem of the hardware configuration complexity of prior art control unit.
For achieving the above object and other relevant objects, this utility model provides a kind of ultrasonic surgical system, and it at least comprises: ultrasonic working cell, for converting the entrained electric energy of the signal of telecommunication to mechanical energy; The waveform generating unit being connected with described ultrasonic working cell, for providing the signal of telecommunication to described ultrasonic working cell; With the control unit that described waveform generating unit is connected, it comprises: the acquisition module being connected with the outfan of described waveform generating unit, for gathering the signal of telecommunication of described outfan when the operation of described ultrasonic working cell; The control module being connected with described acquisition module, for obtaining corresponding electrical quantity from the signal of telecommunication of the current collection of described acquisition module, and generates the instruction of adjusting the signal of telecommunication for described waveform generating unit according to obtained electrical quantity; The pwm signal generator being connected with waveform generating unit with described control module, for the instruction of exporting according to described control module, progressively adjust the pwm signal that transfers to described waveform generating unit, for correspondence, adjust output and/or the frequency of described waveform generating unit.
Preferably, described waveform generating unit comprises: bridge circuit, the wave filter being connected with described bridge circuit and the transformator being connected with described wave filter.
Preferably, described pwm signal generator is connected with described bridge circuit, for the pwm signal after adjusting is transported to described bridge circuit.
Preferably, described pwm signal generator is progressively adjusted frequency and phase place or the pulsewidth of pwm signal for the instruction based on generated, and the pwm signal after adjusting is transported to described waveform generating unit.
Preferably, described electrical quantity comprises: current phase, voltage-phase, current effective value and voltage effective value.
Preferably, described control module is determined output for current effective value and voltage effective value based on obtained, and resulting output and default power are compared, when obtained output is less than default power, generate also output packet and increase the phase place of pwm signal or the instruction of pulsewidth containing the unit according to default, otherwise, when the operation result of power is greater than preset value, generates also output packet and contain the instruction that reduces phase place or the pulsewidth of pwm signal according to default unit.
Preferably, described control module is for comparing obtained current phase and voltage-phase, when current phase leading voltage phase place, generate also output packet and containing the cps according to default, reduce the instruction of the frequency of pwm signal, when current phase lagging voltage phase place, generating also output packet increases the instruction of the frequency of pwm signal containing the cps according to default.
Preferably, described ultrasonic surgical system also comprises: man-machine interaction unit for the default power of input before described ultrasonic working cell operation, and shows obtained electrical quantity in the running of described ultrasonic working cell.
As mentioned above, ultrasonic surgical system of the present utility model, there is following beneficial effect: can to waveform generating unit, carry out the adjustment of power and frequency according to obtained electrical quantity simultaneously, particularly, by adjusting pulsewidth or the phase place of PWM, control the power that bridge circuit changes output electrical signals, by adjusting the frequency of pwm signal, control the frequency that bridge circuit changes output electrical signals, so only controlling bridge circuit just can adjust the mechanical movement of ultrasonic working cell in real time, can ban controlled AC DC converter and the hardware phase-locked-loop of original ultrasonic surgical system, and the hardware device that use cost is lower and the life-span is longer.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the ultrasonic surgical system of prior art.
Fig. 2 is shown as the structural representation of ultrasonic surgical system of the present utility model.
Element numbers explanation
141 analysis and processing module
142 hardware phase-locked-loop
21 power supply units
22 waveform generating units
23 ultrasonic working cells
24 control units
241 acquisition modules
242 control modules
243 pwm signal generators
The specific embodiment
By specific instantiation, embodiment of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this description.This utility model can also be implemented or be applied by the other different specific embodiment, and the every details in this description also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.
Refer to Fig. 2.It should be noted that, the diagram providing in the present embodiment only illustrates basic conception of the present utility model in a schematic way, satisfy and only show with assembly relevant in this utility model in graphic but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
As shown in Figure 2, this utility model provides a kind of ultrasonic surgical system.Described ultrasonic surgical system comprises: power supply unit 21, waveform generating unit 22, ultrasonic working cell 23 and control unit 24.
Described power supply unit 21 comprises: power supply and AC-DC converter.
Described ultrasonic working cell 23 is for converting the entrained electric energy of the signal of telecommunication to mechanical energy.It comprises: transducer and working head.
Particularly, described transducer converts the entrained electric energy of the received signal of telecommunication mechanical energy with certain frequency to, and produces ultrasonic vibration by described working head, during operation, described working head can carry out surgical operation (or surgical examination), for example, and cutting muscular tissue, skeleton etc.
When operation, because the position that described ultrasonic working cell 23 contacts is different, can cause hyperacoustic frequency of vibration and power to change.Therefore, the waveform generating unit 22 being attached thereto is given in the variation meeting retroaction of the frequency of described ultrasonic working cell 23, power, therefore, needs described waveform generating unit 22 can adjust in time output frequency and power.
Described waveform generating unit 22 is connected with described ultrasonic working cell, for providing the signal of telecommunication to described ultrasonic working cell.In the present embodiment, it comprises: bridge circuit, the wave filter being connected with described bridge circuit and the transformator being connected with described wave filter.
Particularly, described power supply offers described AC-DC converter by net piezoelectric voltage (220v alternating voltage), to carry out transporting to again described bridge circuit after AC-DC conversion, the pwm signal (pulse-width signal) of described bridge circuit based on received carries out Shape correction to DC source, and carry out filtering via wave filter, to remove noise, then by transformator, converted to the signal of telecommunication of predeterminated voltage, for described ultrasonic working cell 23, carry out the conversion of electric energy-mechanical energy.Wherein, described bridge circuit includes but not limited to: full-bridge circuit or half-bridge circuit etc.
Described control unit 24 is connected with described waveform generating unit 22, for providing described pwm signal to described waveform generating unit 22.It comprises: acquisition module 241, control module 242 and pwm signal generator 243.
Described acquisition module 241 is connected with the outfan of described waveform generating unit 22, for gathering the signal of telecommunication of the outfan of described waveform generating unit 22 when 23 operation of described ultrasonic working cell.Wherein, described acquisition module 241 can be the circuit that comprises sampling resistor.For example, described sampling module comprises sampling resistor, and the current sampling circuit being connected with described sampling resistor, described current sampling circuit gathers the electric current of described sampling resistor, and according to the resistance of gathered electric current and described sampling resistor, calculate the voltage of described outfan, and sampled electric current and voltage signal are exported.
Described control module 242 is for obtaining corresponding electrical quantity from the signal of telecommunication of described acquisition module 241 current collections, and generates according to obtained electrical quantity the instruction of adjusting the signal of telecommunication for described waveform generating unit.Wherein, described electrical quantity comprises: current phase, voltage-phase, current effective value, voltage effective value and current/voltage amplitude etc.Wherein, described control module 242 can for a kind of can be according to the program of prior storage, automatically, the modernization intelligent electronic device that carries out at high speed massive values computation and various information processings, its hardware includes but not limited to microprocessor, FPGA, DSP, embedded device etc.Preferably, the circuit of described control module 242 for comprising processor, depositor, at least one comparator.
Particularly, current effective value and the voltage effective value of described control module 242 based on obtained determined output, and resulting output and default power are compared, when obtained output is less than default power, generate also output packet and increase the phase place of pwm signal or the instruction of pulsewidth containing the unit according to default, otherwise, when the operation result of power is greater than preset value, generates also output packet and contain the instruction that reduces phase place or the pulsewidth of pwm signal according to default unit.
For example, pre-stored performance number in described depositor, the existing circuit formula of described processor based on default obtained above-mentioned electrical quantity from current the gathered signal of telecommunication, and the current effective value based on obtained and voltage effective value are determined output, then, obtained output is transported to described comparator, described comparator compares the power of storing in described output and depositor, again by comparative result with height, low level mode returns to processor, the level receiving when described processor is low level, determine that obtained output is less than default power, and output packet increases the phase place of pwm signal or the instruction of pulsewidth containing the unit according to default, otherwise, the level receiving when described processor is high level, the operation result of determining obtained power is greater than the performance number of storing in depositor, and output packet is containing progressively reduce the instruction of phase place or the pulsewidth of pwm signal according to default unit.Wherein, default unit can be the phase place of 1 ° or the phase place of 0.1 °, can be also 1ms pulsewidth or 0.1ms pulsewidth etc.
Wherein, described processor is adjusted pwm signal according to comparative result phase place or pulsewidth are to determine according to the structure of the bridge circuit in described waveform generating unit 22.For example, described bridge circuit is full-bridge circuit, and described control module 242 output packets are containing the instruction of adjusting the phase place of pwm signal.And for example, described bridge circuit is half-bridge circuit, and described control module 242 output packets are containing the instruction of adjusting the pulsewidth of pwm signal.
In addition, described control module 242 compares obtained current phase and voltage-phase, when current phase leading voltage phase place, generate also output packet and containing the cps according to default, reduce the instruction of the frequency of pwm signal, when current phase lagging voltage phase place, generating also output packet increases the instruction of the frequency of pwm signal containing the cps according to default.
For example, another comparator in described control module 242 compares obtained current phase and the voltage-phase of described processor, again by comparative result with height, low level mode returns to described processor, the level receiving when described processor is low level, determine current phase leading voltage phase place, and output packet reduces the instruction of the frequency of pwm signal containing the cps according to default, the level receiving when described processor is high level, determine current phase lagging voltage phase place, and output packet increases the instruction of the frequency of pwm signal containing the cps according to default.Wherein, default cps can be 1Hz or 0.1Hz.
And for example, the current output of expression that processor in described control module 242 is exported according to comparator is greater than the level of default power and current phase leading voltage phase place, generate and output packet containing reducing the phase place of pwm signal according to default phase unit and reducing the instruction of the frequency of pwm signal according to default cps.
Described pwm signal generator 243 is connected with waveform generating unit 22 with described control module 242, for the instruction of exporting according to described control module 242, progressively adjust the pwm signal that transfers to described waveform generating unit 22, for correspondence, adjust output and/or the frequency of described waveform generating unit 22.
Particularly, described pwm signal generator 243 determines that from described instruction what will adjust is phase place, pulsewidth or frequency, the pwm signal generating according to the corresponding unit adjustment providing in described instruction again, and the pwm signal after adjusting is transported to described waveform generating unit 22, described waveform generating unit 22, under the control of described pwm signal, is adjusted power and/or frequency that the signal of telecommunication generate is exported.
Wherein, the mode that described pwm signal generator 243 is adjusted pwm signal includes but not limited to: 1) according to phase place (or pulsewidth) and the frequency of the pwm signal of the default unit of received instruction gradation adjustment; 2) according to phase place (or pulsewidth) and the frequency of the pwm signal of the default unit of the disposable adjustment of received instruction.
Preferably, described pwm signal generator 243 is connected with described bridge circuit, for the pwm signal after adjusting is transported to described bridge circuit.
For example, the instruction that described pwm signal generator 243 is exported from described control module 242, determine that take 0.1 degree increases the phase place of pwm signal as phase unit, with take 0.1Hz and reduce the frequency of pwm signal as cps, described pwm signal generator 243 respectively carries out the adjustment of Yi Ge unit according to above-mentioned instruction to the phase place of pwm signal and frequency, and by the bridge circuit in waveform generating unit described in the pwm signal output valve after adjusting.
More preferably, described ultrasonic surgical system also comprises: man-machine interaction unit (not giving diagram).
Described man-machine interaction unit is used for the default power of input before 23 operations of described ultrasonic working cell, and shows obtained electrical quantity in 23 runnings of described ultrasonic working cell.Wherein, described man-machine interaction unit includes but not limited to: keyboard, mouse, touch screen, felt pen, display screen etc.
Particularly, described man-machine interaction unit is before described ultrasonic working cell operation, the form that shows the electrical quantity of required input, and receive the electrical parameter values (as, power etc.) of user input, and received electrical parameter values is kept in depositor, simultaneously, in the running of described ultrasonic working cell, the electrical quantity that described control unit is obtained is in real time shown, with for reference.
The work process of described ultrasonic surgical system is exemplified below:
The power that user utilizes man-machine interaction unit input wish to adjust, and the ultrasonic working cell that brings into operation, in running, described control module 242 in described control unit 24 is according to current signal and the voltage signal of described waveform generating unit 22 outfans of described sampling module 241 real-time samplings, and the current phase of definite current described outfan, voltage-phase, current effective value, voltage effective value, current amplitude, the electrical quantitys such as voltage magnitude, wherein, on the one hand, described control module 242 offers described user by current/voltage amplitude by man-machine interaction unit, ruuning situation with current ultrasonic working cell for reference, on the other hand, described control module 242 is current phase and voltage-phase relatively, when current phase leading voltage phase place, generation comprises the instruction that reduces the frequency of pwm signal according to default cps, when current phase lagging voltage phase place, generation comprises the instruction that increases the frequency of pwm signal according to default cps, simultaneously, described control module 242 is also determined current output by current effective value and voltage effective value, and the power that provides of more described output and man-machine interaction unit, when obtained output is less than default power, generation comprises the instruction that increases the phase place of pwm signal according to default unit, otherwise, when the operation result of power is greater than preset value, generation comprises the instruction that reduces the phase place of pwm signal according to default unit, again generated instruction is transported to described pwm signal generator 243, described pwm signal generator 243 is adjusted phase place and the frequency of the Yi Ge unit of pwm signal according to received all instructions, and the pwm signal after adjusting is transported to the full bridge circuit in described waveform generating unit 22, described full-bridge circuit is adjusted phase place and the frequency of the signal of telecommunication that the power supply unit of Yi Ge unit provides according to pwm signal, and export the outfan of described waveform generating unit 22 to.Described control unit 24 continues to gather current signal and the voltage signal of described outfan, and compare in the manner described above, if generate, comprise according to the instruction of the frequency of default cps minimizing pwm signal and comprise the instruction that increases the phase place of pwm signal according to default unit, the frequency of pwm signal that continues to reduce Yi Ge unit is, the phase place of the pwm signal of increase Yi Ge unit, the signal of telecommunication of being exported according to the pwm signal adjustment after adjusting by described full-bridge circuit again, until output and default power, current phase and voltage-phase balance each other.
In sum, ultrasonic surgical system of the present utility model, by adjusting pulsewidth or the phase place of PWM, control the power that bridge circuit changes output electrical signals, by adjusting the frequency of pwm signal, control the frequency that bridge circuit changes output electrical signals, so only controlling bridge circuit just can adjust the mechanical movement of ultrasonic working cell in real time, can ban controlled AC DC converter and the hardware phase-locked-loop of original ultrasonic surgical system, and the hardware device that use cost is lower and the life-span is longer; In addition, ultrasonic working cell in when operation because meeting contacts different tissue sites, real-time the changing of load meeting of ultrasonic working cell, this causes power and the frequency of the signal of telecommunication that waveform generating unit exports all can change, described control unit adopts the mode of progressively adjusting pwm signal, can adapt to the load constantly changing with the stepping cost of minimum pwm signal.So this utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting this utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that this utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (8)
1. a ultrasonic surgical system, is characterized in that, at least comprises:
Ultrasonic working cell, for converting the entrained electric energy of the signal of telecommunication to mechanical energy;
Be connected with described ultrasonic working cell, for the waveform generating unit of the signal of telecommunication is provided to described ultrasonic working cell;
Control unit with described waveform generating unit is connected, comprising:
Be connected with the outfan of described waveform generating unit, for gathering the acquisition module of the signal of telecommunication of described outfan when the operation of described ultrasonic working cell;
The control module being connected with described acquisition module, for obtaining corresponding electrical quantity from the signal of telecommunication of the current collection of described acquisition module, and generates the instruction of adjusting the signal of telecommunication for described waveform generating unit according to obtained electrical quantity;
The pwm signal generator being connected with waveform generating unit with described control module, for the instruction of exporting according to described control module, progressively adjust the pwm signal that transfers to described waveform generating unit, for correspondence, adjust output and/or the frequency of described waveform generating unit.
2. ultrasonic surgical system according to claim 1, is characterized in that, described waveform generating unit comprises: bridge circuit, the wave filter being connected with described bridge circuit and the transformator being connected with described wave filter.
3. ultrasonic surgical system according to claim 2, is characterized in that, described pwm signal generator is connected with described bridge circuit, for the pwm signal after adjusting is transported to described bridge circuit.
4. ultrasonic surgical system according to claim 1, it is characterized in that, described pwm signal generator is progressively adjusted frequency and phase place or the pulsewidth of pwm signal for the instruction based on generated, and the pwm signal after adjusting is transported to described waveform generating unit.
5. ultrasonic surgical system according to claim 1, is characterized in that, described electrical quantity comprises: current phase, voltage-phase, current effective value and voltage effective value.
6. ultrasonic surgical system according to claim 5, it is characterized in that, described control module is for comprising processor, depositor, the circuit of at least one comparator, wherein, current effective value and the voltage effective value of described processor based on obtained determined output, and by described comparator, resulting output and the power that is preset in described depositor are compared, when described comparator, determine obtained output and be less than default power, described processor generates and output packet increases the phase place of pwm signal or the instruction of pulsewidth containing the unit according to default, otherwise, when described comparator determines that the operation result of power is greater than preset value, described processor generates and output packet contains the instruction that reduces phase place or the pulsewidth of pwm signal according to default unit.
7. ultrasonic surgical system according to claim 5, it is characterized in that, described control module is the circuit that comprises processor, at least one comparator, wherein, described comparator compares obtained current phase and the voltage-phase of described processor, when current phase leading voltage phase place, make described processor generate also output packet and containing the cps according to default, reduce the instruction of the frequency of pwm signal, when current phase lagging voltage phase place, making described processor generate also output packet increases the instruction of the frequency of pwm signal containing the cps according to default.
8. ultrasonic surgical system according to claim 5, it is characterized in that, described ultrasonic surgical system also comprises: man-machine interaction unit for the default power of input before described ultrasonic working cell operation, and shows obtained electrical quantity in the running of described ultrasonic working cell.
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-
2013
- 2013-05-31 CN CN201320312812.0U patent/CN203468630U/en not_active Expired - Lifetime
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Address after: 300457 Tianjin Binhai New Area Economic and Technological Development Zone, Fourth Street, No. 5, block B, floor 4 Co-patentee after: CHINA SURGICAL (SHANGHAI) Corp. Patentee after: REACH SURGICAL Inc. Address before: 300457, Tianjin Binhai New Area Binhai New Area Economic and Technological Development Zone Fourth Street 5, block B, 4 Co-patentee before: CHINA SURGICAL (SHANGHAI) Corp. Patentee before: REACH SURGICAL, Inc. |
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Effective date of registration: 20220915 Address after: No. 120, Xinxing Road, West District, Binhai New Area Development Zone, Tianjin 300462 Patentee after: REACH SURGICAL Inc. Address before: 300457 4th floor, block B, No.5 Fourth Street, Binhai New Area Economic and Technological Development Zone, Tianjin Patentee before: REACH SURGICAL Inc. Patentee before: CHINA SURGICAL (SHANGHAI) Corp. |
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