CN106344119A - Direct excitation type ultrasonic power driving system - Google Patents
Direct excitation type ultrasonic power driving system Download PDFInfo
- Publication number
- CN106344119A CN106344119A CN201610985723.0A CN201610985723A CN106344119A CN 106344119 A CN106344119 A CN 106344119A CN 201610985723 A CN201610985723 A CN 201610985723A CN 106344119 A CN106344119 A CN 106344119A
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- China
- Prior art keywords
- ultrasonic transducer
- ultrasonic
- sine wave
- master controller
- power amplifier
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
- A61B2017/320072—Working tips with special features, e.g. extending parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Dentistry (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgical Instruments (AREA)
Abstract
The embodiment of the invention discloses a direct excitation type ultrasonic power driving system, which comprises an ultrasonic transducer and a main controller, wherein the output end of the main controller is directly connected with the input end of the ultrasonic transducer; the main controller is used for outputting a sine wave signal for driving the ultrasonic transducer. According to the embodiment, the main controller directly drives the ultrasonic transducer through sine waves; the frequency f of the sine waves is just the resonant frequency f0 of the ultrasonic transducer; the ultrasonic transducer works in a resonant state; the efficiency is highest. The heating energy of the ultrasonic transducer is effectively reduced; the circuit structure of the whole driving system of an ultrasonic instrument is simplified; the integration, the light weight and the miniaturization of an ultrasonic surgery system are facilitated.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly, to ultrasonic surgical blade field is and in particular to one kind directly swashs
Encourage formula ultrasonic power drive system.
Background technology
Ultrasonic surgery is the revolution of whole world surgical field during the nearly last ten years.In ultrasonic surgical instruments are usually used in
Surfing style Minimally Invasive Surgery and open operation.This apparatus can stop blood with Rhizoma Atractylodis Macrocephalae, thus reducing the bleeding in operation process, this
Kind of apparatus can under low temperature environment (50 to 70 DEG C) sealing blood vessels, inorganization burn and incrustation phenomenon.
Ultrasonic surgical instruments are encouraged by ultrasonic transducer, and ultrasonic transducer is all to be driven by ultrasonic power
Power supply energy supply, conventional ultrasonic power driving power supply, generally match circuit pass through carry out the driving of ultrasonic transducer and encourage,
Reason is, as shown in figure 1, equivalent circuit diagram near its mechanical resonant frequency for the ultrasonic transducer, c0For direct capacitance,
It is electricity component；l1For dynamic inductance, c1For dynamic capacity, r1For dynamic electric resistor, the mechanical arm of three's composition equivalent circuit.u
T () is the external voltage of transducer, be also mechanical arm voltage, needs accurately to measure u (t) and i1 using phase-locking type dynamic frequency rate
The difference ψ d of (t), u (t) can measure, but i1T () can not independently measure, can only measure i (t), by static inductance l0And ultrasonic transduction
Entirety regarded as by device, measures a, the voltage and current between b, by both phase contrasts come dynamic regulation inductance, because according to lcr
Series resonance property, differs as just, account for voltage leading current, static inductance l0It is in integrally perception with ultrasonic transducer, pass through
Adjustment static inductance l0Inductance value make ultrasonic transducer work under resonance condition.
When ultrasonic transducer is operated in resonance point, direct capacitance c in ultrasonic transducer0And l0The impedance in place loop is minimum,
Through direct capacitance c0And l0Electric current maximum, because of direct capacitance c0And l0, all there is loss in not ideal component, and thus
And lead to the phenomenon of ultrasonic transducer heating to occur.When serious, or even because ultrasonic transducer temperature is too high, and make operation technique
Person cannot grasp, and impact uses.
Content of the invention
The purpose of the embodiment of the present invention is to provide a kind of directly excitation formula ultrasonic power drive system, to reduce ultrasonic changing
The caloric value of energy device.
Technical scheme provided in an embodiment of the present invention provides a kind of directly excitation formula ultrasonic power drive system.Described system
System includes ultrasonic transducer and master controller, wherein:
The outfan of described master controller is directly connected to the input of described ultrasonic transducer, and described master controller is used
Sine wave signal in ultrasonic transducer described in output driving.
As shown from the above technical solution, the embodiment of the present invention is just passing through master controller direct output driving ultrasonic transducer
String ripple signal, and the outfan of master controller is directly connected to the input of ultrasonic transducer, makes ultrasonic transducer work in humorous
Shake state, ultrasonic transducer impedance is minimum, the efficiency highest of ultrasonic transducer, thus the thermal losses of ultrasonic transducer is relatively low, keeps away
Exempt from the big phenomenon of ultrasonic transducer caloric value.And simplify the circuit structure of main controller, be conducive to ultrasonic power drivetrain
The integrated, lightness of system and miniaturization.
Brief description
A kind of structural representation of directly excitation formula ultrasonic power drive system for providing in prior art for the Fig. 1；
A kind of structural representation of directly excitation formula ultrasonic power drive system for providing in the embodiment of the present invention for the Fig. 2.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure is illustrate only in description, accompanying drawing.
A kind of directly excitation formula ultrasonic power drive system, this ultrasonic work(of directly excitation formula is provided in the embodiment of the present invention
Rate drive system is optimized on the basis of prior art, the direct sine wave output of master controller to drive ultrasonic transducer,
And ultrasonic transducer is in non-resonant condition, reduce the power consumption of ultrasonic transducer.
Fig. 1 is a kind of structural representation of the directly excitation formula ultrasonic power drive system providing in prior art, and this is straight
Connect in Exciting-simulator system ultrasonic power drive system, tune is followed the trail of by the running voltage of ultrasonic transducer and the phase contrast of operating current
The inductance value of whole static inductance, to ensure that ultrasonic transducer is operated in resonance point as far as possible, is had with the maximum realizing ultrasonic transducer
Use power output.As shown in figure 1, ultrasonic transducer 12 is operated in resonance point, lead to direct capacitance c in ultrasonic transducer 120Institute
Minimum in the impedance of branch road, through direct capacitance c0Electric current larger, thus direct capacitance c0Power consumption larger, and therefrom
The big phenomenon of ultrasonic transducer 12 caloric value is led to occur.
As shown in figure 1, existing directly excitation formula ultrasonic power drive system includes master controller 11, equivalence filter 13
With ultrasonic transducer 12.Wherein, the outfan of master controller 11 and the input of equivalence filter 13 are directly connected to, and main control
Device 11 is used for exporting square-wave signal, and the outfan of equivalence filter 13 is connected with the input of ultrasonic transducer 12, equivalent filter
The square-wave signal that device 13 is used for exporting master controller 11 is converted into the sine wave signal driving ultrasonic transducer 12.
When directly excitation formula ultrasonic power drive system normal work of the prior art, ultrasonic generator 111 produces
Square-wave signal, power amplifier 112 is in switching mode, to carry out power amplifier process to square-wave signal.
Equivalence filter 13 includes static inductance l0And direct capacitance c in ultrasonic transducer 120.Equivalence filter 13
The square-wave signal processing through power amplifier is filtered, sine wave output signal, and ultrasonic transducer is driven by sine wave signal
12.Due to static inductance l0With direct capacitance c0Resonance leads to direct capacitance c0The impedance minimum in place loop is so that pass through static
Electric capacity c0Electric current i0T () is maximum, and then direct capacitance c0Power consumption larger.
The big phenomenon of ultrasonic transducer caloric value is led to occur therefrom, when serious, or even because ultrasonic transducer temperature
Too high, so that operator cannot be grasped, or even occur to scald phenomenon, lead to the generation of second accident in operation process.
A kind of structural representation of directly excitation formula ultrasonic power drive system for providing in the embodiment of the present invention for the Fig. 2.
As shown in Fig. 2 this directly excitation formula ultrasonic power drive system includes master controller 21 and ultrasonic transducer 22；Wherein, master control
The outfan of device 21 processed and the input of ultrasonic transducer 22 are directly connected to, and master controller 21 is used for output driving ultrasonic transduction
The sine wave signal of device 22.
Exemplary, the equivalent circuit of ultrasonic transducer 22 includes the dynamic inductance l being sequentially connected in series1, dynamic capacity c1
With dynamic electric resistor r1, and with dynamic inductance l1, dynamic capacity c1With dynamic electric resistor r1Direct capacitance c being connected in parallel0.
Specifically, master controller 21 is used for the sine wave signal of output driving ultrasonic transducer 22, rather than square-wave signal,
Thus square-wave signal is filtered to process without equivalence filter in this ultrasonic power drive system, i.e. master controller 21
Outfan is directly connected to the input of ultrasonic transducer 22.
In conjunction with Fig. 1 and Fig. 2, the present embodiment, compared to prior art, decreases between controller 21 and ultrasonic transducer 22
Static inductance l0, thus avoid static inductance l0With direct capacitance c0Resonance, i.e. direct capacitance c in the present embodiment0Place branch road
Impedance larger, and power consumption is less, effectively reduces the heat of ultrasonic transducer generation, it is to avoid because ultrasonic transducer 22 temperature
Spend height, and so that operator cannot be grasped or even scald, lead to the generation of second accident in operation process.
Exemplary, master controller 21 includes ultrasonic generator 211, and ultrasonic generator 211 changes for output driving is ultrasonic
The sine wave signal of energy device 22.During ultrasonic scalpel system normal work, first by the direct sine wave output of ultrasonic generator 211
Signal, makes do not needing to align under conditions of string ripple signal is filtered processing, ultrasonic transducer 22 just can be directly ultrasonic
The sine wave signal of generator 211 output drives, and simplifies the circuit structure of the overall drive system of ultrasonic instrument, is conducive to surpassing
The integrated, lightness of sound surgery systems and miniaturization.
Exemplary, master controller 21 includes power amplifier 212, and power amplifier 212 is connected with ultrasonic transducer 22,
And power amplifier 212 is used for the sine wave signal of ultrasonic generator 211 output being amplified process.
In the sine wave signal processing and amplifying that ultrasonic generator 211 is exported, the power in master controller 21 can be put
Big device 212 is adjusted to amplification mode, and the sine wave signal after then processing power amplifier is sent to ultrasonic transducer 22.Ultrasonic transduction
Device 22 can be placed in ultrasound-driven handle, that is, be placed in user's hand held structures, user is adopted by hand-held ultrasound driving handle
Performed the operation with ultrasonic scalpel system.
Further, master controller 21 includes transformator t, and transformator t is connected with power amplifier 212, and transformator t is defeated
The voltage going out the sine wave signal after power amplifier 212 processing and amplifying is to described ultrasonic transducer 22.
Frequency f of the sine wave signal after power amplifier processing and amplifying just telecommunications needed for ultrasonic transducer work
Number frequency, i.e. resonant frequency f0 of ultrasonic transducer.Further, the sine wave signal after power amplifier processing and amplifying
Frequency range be 20khz to 120khz, more suitable frequency is 30khz-70khz.Optionally, amplify through power amplifier
The frequency range of the sine wave signal after process is 55.5khz.By the frequency range of sine wave signal be set to 55.5khz be for
Ensure the normal work of ultrasonic transducer.
In sum, the technical scheme of the embodiment of the present invention, by cancelling static inductance so that master controller passes through sine
Ripple directly drives ultrasonic transducer.Not only guarantee that no harmonic wave is input to ultrasonic transducer, effectively reduce the heating of ultrasonic transducer
Amount, and simplify the circuit structure of the overall drive system of ultrasonic instrument, be conducive to the integrated, light-duty of ultrasonic surgical systems
And miniaturization.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (6)
1. a kind of directly excitation formula ultrasonic power drive system is it is characterised in that include ultrasonic transducer and master controller, its
In:
The outfan of described master controller is directly connected to the input of described ultrasonic transducer, and described master controller is for defeated
Go out the sine wave signal driving described ultrasonic transducer.
2. system according to claim 1 is it is characterised in that described master controller includes ultrasonic generator, described ultrasonic
Generator is used for the sine wave signal of ultrasonic transducer described in output driving.
3. system according to claim 2 is it is characterised in that described master controller includes power amplifier, described power
Amplifier is connected with described ultrasonic transducer, and described power amplifier is used for the sine wave letter to the output of described ultrasonic generator
Number it is amplified processing.
4. system according to claim 3 is it is characterised in that described master controller includes transformator, described transformator with
Described power amplifier connects, and the electricity of sine wave signal after described power amplifier processing and amplifying for the described transformator output
Press to described ultrasonic transducer.
5. system according to claim 3 is it is characterised in that the sine wave after described power amplifier processing and amplifying is believed
Number frequency range be 20khz to 120khz.
6. system according to claim 5 is it is characterised in that the sine wave after described power amplifier processing and amplifying is believed
Number frequency range be 55.5khz.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016109323407 | 2016-10-25 | ||
| CN201610932340 | 2016-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106344119A true CN106344119A (en) | 2017-01-25 |
Family
ID=57861528
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610985723.0A Pending CN106344119A (en) | 2016-10-25 | 2016-11-09 | Direct excitation type ultrasonic power driving system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542281A (en) * | 2018-03-08 | 2020-08-14 | 爱惜康有限责任公司 | Temperature control of ultrasonic end effector and control system therefor |
| CN114305599A (en) * | 2022-03-15 | 2022-04-12 | 厚凯(北京)医疗科技有限公司 | Control method and control device for ultrasonic transducer, surgical equipment and storage medium |
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Cited By (3)
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|---|---|---|---|---|
| CN111542281A (en) * | 2018-03-08 | 2020-08-14 | 爱惜康有限责任公司 | Temperature control of ultrasonic end effector and control system therefor |
| CN114305599A (en) * | 2022-03-15 | 2022-04-12 | 厚凯(北京)医疗科技有限公司 | Control method and control device for ultrasonic transducer, surgical equipment and storage medium |
| CN114305599B (en) * | 2022-03-15 | 2022-08-09 | 厚凯(北京)医疗科技有限公司 | Control method and control device for ultrasonic transducer, surgical equipment and storage medium |
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