CN110448355A - A kind of ultrasound knife resonance frequency tracking auto-reset method and its equipment - Google Patents
A kind of ultrasound knife resonance frequency tracking auto-reset method and its equipment Download PDFInfo
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- CN110448355A CN110448355A CN201910736584.1A CN201910736584A CN110448355A CN 110448355 A CN110448355 A CN 110448355A CN 201910736584 A CN201910736584 A CN 201910736584A CN 110448355 A CN110448355 A CN 110448355A
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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
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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
- A61B2017/00017—Electrical control of surgical instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0266—Operational features for monitoring or limiting apparatus function
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Mechanical Engineering (AREA)
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
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Abstract
The invention discloses a kind of ultrasound knife resonance frequency tracking auto-reset method and its equipment, specific steps are as follows: the starting resonance frequency of ultrasound knife vibrational system is obtained by frequency sweep；Monitor the resonant frequency of operation of ultrasound knife vibrational system in real time；If the resonant frequency of operation of ultrasound knife vibrational system exceeds the maximum value of ultrasound knife drive system following frequency, it prompts the cutter head damping of operator's ultrasound knife excessive, assigns frequency near ultrasound knife drive system starting resonance frequency or ultrasound knife vibrational system starting resonance frequency again；Reduce cutter head damping, comes back to resonant frequency of operation within the scope of the bandwidth of ultrasound knife drive system；The voltage and current for adjusting ultrasound knife vibrational system, so that the following frequency of ultrasound knife drive system and the resonant frequency of operation of ultrasound knife vibrational system are consistent again.And a kind of ultrasound knife equipment is disclosed, it is mainly used for preventing the resonance frequency of ultrasound knife equipment is excessive from ultrasound knife equipment being caused to stop working repeatedly, guarantees the working efficiency of ultrasound knife.
Description
Technical field
The present invention relates to a kind of frequency-tracking auto-reset method and its equipment, and in particular to a kind of ultrasound knife resonance frequency
Track auto-reset method and its equipment.
Background technique
When using ultrasound knife equipment, the dynamics that user applies is all different, and there are biggish inconsistencies and can not
Control.The pressure at right angle that applies to the jaw of ultrasound knife as user or the longitudinal pressure applied to bone cutter head are excessive, lead to knife
Head vibration damping is excessive, and when exceeding ultrasound knife load capacity, output effect is deteriorated.Tradition exists with the ultrasound knife of frequency-tracking
In use process, if cutter head vibration damping is excessive, resonance frequency is easy to cause to rise rapidly, once resonance frequency is beyond ultrasound
After the bandwidth range that vibrational system can track, machine will call the police and stop working, and need to re-start frequency sweep and locking frequency,
If this process is repeatedly, it is difficult to will result in incision, or cut inefficiency.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is intended to provide a kind of tracking of ultrasound knife resonance frequency and automatically resets
Method and its equipment avoid due to the instantaneous of operator or the pressure at right angle that persistently applies to jaw or apply to bone cutter head
Longitudinal pressure is excessive, to keep cutter head vibration damping excessive, causing frequency is more than following range, leads to the problem of shutting down, and solves
Frequency is lost when the work of conventional ultrasound knife, the shortcomings that stop working repeatedly.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of ultrasound knife resonance frequency tracking auto-reset method, specific steps are as follows:
Obtain the starting resonance frequency of ultrasound knife vibrational system；
It monitors the resonant frequency of operation of ultrasound knife vibrational system in real time, and judges the operational resonant frequency of ultrasound knife vibrational system
Whether rate is consistent with the following frequency of ultrasound knife drive system；
If the resonant frequency of operation of ultrasound knife vibrational system exceeds the maximum value of ultrasound knife drive system following frequency, prompt
The cutter head damping of operator's ultrasound knife is excessive, assigns the starting resonance frequency of ultrasound knife drive system ultrasound knife vibrational system again
Rate；
Reduce cutter head damping, the resonant frequency of operation of ultrasound knife vibrational system returns to the bandwidth model of ultrasound knife drive system
It encloses；
The electric current of ultrasound knife vibrational system and the phase of voltage are adjusted, so that the following frequency of ultrasound knife drive system and super
The resonant frequency of operation of sound knife vibrational system is consistent again.
Further, the resonant frequency of operation of the real time monitoring ultrasound knife vibrational system, and judge ultrasound knife vibration system
Whether the resonant frequency of operation of system is consistent with the following frequency of ultrasound knife drive system, specifically: when ultrasound knife works, ultrasound knife
Resonant frequency of operation of the following frequency of drive system always with ultrasound knife vibrational system is consistent, so that the work of ultrasound knife
Efficiency reaches maximum.
Further, the starting resonance frequency for assigning ultrasound knife drive system ultrasound knife vibrational system again is specific
Are as follows: when the resonant frequency of operation of ultrasound knife vibrational system exceeds the maximum value of ultrasound knife drive system following frequency, assign again
The starting resonance frequency of ultrasound knife drive system ultrasound knife vibrational system is given, i.e., ultrasound knife drive system is according to ultrasound knife vibration system
Rate-adaptive pacemaker near starting resonance frequency or ultrasound knife vibrational system the starting resonance frequency of system.
A kind of ultrasound knife equipment, using said frequencies auto-reset method, including microcontroller, digital signal processor,
Touch screen and passive electrical die mould inverter circuit, the microcontroller are real with the digital signal processor and the touch screen respectively
Existing serial communication, the digital signal processor are connect by inverter circuit with ultrasound knife vibrational system, the ultrasound knife vibration
System is connect with ultrasound knife current sensor, ultrasound knife voltage sensor and Current Voltage phase difference sensor, super for monitoring
Electric current, power supply and its phase difference of sound knife vibrational system.
Further, the inverter circuit is passive electrical die mould inverter circuit.
Further, the microcontroller is STM32 type single-chip microcontroller.
Further, the digital signal processor is dsp processor.
The beneficial effects of the present invention are:
1. the present invention can be avoided due to the instantaneous of operator or persistently apply pressure at right angle to the cutter head of ultrasound knife or indulge
Excessive to pressure, to keep the cutter head vibration damping of ultrasound knife excessive, causing resonant frequency of operation is more than the maximum frequency of setting,
Lead to the problem of shutting down；The optimum resonant frequency or best neighbouring resonance frequency that the present invention can be obtained from frequency sweep when starting to work
Rate assigns ultrasound knife vibrational system and works on, locks without frequency sweep again.
2. the present invention solves the disadvantages that frequency is lost when the work of conventional ultrasound knife, causes to stop working repeatedly.
3. the present invention solves, cutter head vibration damping is excessive, and the resonant frequency of operation of ultrasound knife vibrational system exceeds ultrasound knife
The bandwidth range of drive system, after reducing cutter head vibration damping, ultrasound knife vibrational system returns to the frequency of ultrasound knife drive system
After wide scope, and the shortcomings that ultrasound knife drive system can not be followed back to bandwidth range.
4. the present invention can be avoided resonant frequency of operation beyond bandwidth range, equipment component is using the continuation that do not stop working
Energy is exported, drive module and energy converter is caused seriously to be generated heat, and output effect is deteriorated, or even damage drive module, power amplifier mould
The case where block and energy converter, occurs.
5. the present invention can guarantee ultrasound knife within the scope of the best bandwidth of setting, continuous high-efficient work is kept away to greatest extent
Exempt from the work of machine over range, and damages energy converter, drive module and ultrasonic knife bar.
Detailed description of the invention
Fig. 1 is the structural block diagram of ultrasound knife equipment of the invention；
Fig. 2 is flow chart of the method for the present invention.
Icon note: 1. touch screens；2. microcontroller；3. digital signal processor；4. inverter circuit；5. ultrasound knife vibration system
System；6. ultrasound knife current sensor；7. ultrasound knife voltage sensor；8. circuit voltage phase difference sensor.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention:
Embodiment one
As shown in Fig. 2, a kind of ultrasound knife resonance frequency tracking auto-reset method and, specific steps are as follows:
S1: the starting resonance frequency of frequency sweep acquisition ultrasound knife vibrational system；
S2: the resonant frequency of operation of real time monitoring ultrasound knife vibrational system, and judge that the work of ultrasound knife vibrational system is humorous
Whether vibration frequency is consistent with the following frequency of ultrasound knife drive system；When ultrasound knife works, ultrasound knife drive system follows frequency
Resonant frequency of operation of the rate always with ultrasound knife vibrational system is consistent, so that the working efficiency of ultrasound knife reaches maximum；
S3: if the resonant frequency of operation of ultrasound knife vibrational system exceeds the maximum value of ultrasound knife drive system following frequency,
It prompts the cutter head damping of operator's ultrasound knife excessive, assigns the starting resonance of ultrasound knife drive system ultrasound knife vibrational system again
Frequency；
S4: the deattenuation of ultrasound knife cutter head or the damping of ultrasound knife cutter head are zero, the operational resonant of ultrasound knife vibrational system frequency
Rate returns to the bandwidth range of ultrasound knife drive system；
S5: the electric current of adjustment ultrasound knife vibrational system and the phase of voltage, so that the following frequency of ultrasound knife drive system,
When the resonant frequency of operation for detecting ultrasound knife vibrational system is located within the scope of the bandwidth of ultrasound knife drive system and ultrasound knife
The resonant frequency of operation of vibrational system is consistent again.
Again the starting resonance frequency for assigning ultrasound knife drive system ultrasound knife vibrational system specifically:
When the resonant frequency of operation of ultrasound knife vibrational system returns to the bandwidth range of ultrasound knife drive system, ultrasound knife is driven
Dynamic system is according to frequency near starting resonance frequency or ultrasound knife vibrational system the starting resonance frequency of ultrasound knife vibrational system
Output.
The bandwidth range of ultrasound knife drive system refers to that the following frequency of ultrasound knife drive system is driven by ultrasound knife
The limitation of system internal oscillator circuit, the following frequency of ultrasound knife drive system infinitely can not be promoted up or infinitely be declined, made
Ultrasound knife drive system frequency have a maximum value and a minimum value, ultrasound knife drive system maximum frequency and
Between minimum frequency, the referred to as bandwidth of ultrasound knife drive system.
Embodiment two
Ultrasound knife includes ultrasound knife drive system and ultrasound knife vibrational system, and ultrasound knife vibrational system is by energy converter, luffing
Bar and cutter head composition, energy converter and amplitude transformer are referred to as ultrasound knife oscillator, and ultrasound knife oscillator is fixed by pre-loading screw, and energy converter will
The electric energy of power supply is converted to the mechanical energy of vibration, and amplitude transformer is by amplifying mechanical vibration on compared with small area for focuses ultrasonic energy
Dynamic displacement or speed, cutter head radiation sound energy；The shape of jaw or cutter head is formulated according to operation method and operation demand.
At work, it is resonant frequency of operation that ultrasound knife vibrational system 5 has an attribute to ultrasound knife, but the attribute is not one
A fixed value, when temperature change or knife bar deformation occurs when, the resonant frequency of operation of ultrasound knife vibrational system 5 all will
It changes；When the cutter head to ultrasound knife applies pressure, the resonant frequency of operation of ultrasound knife vibrational system 5 rises, ultrasound knife
Drive system will follow the resonant frequency of operation automatic lifting following frequency of ultrasound knife vibrational system 5, so that ultrasound knife driving system
The following frequency of system is consistent with the resonant frequency of operation of ultrasound knife vibrational system 5；But the following frequency of ultrasound knife drive system by
Following frequency to the limitation of ultrasound knife drive system internal oscillator circuit, ultrasound knife drive system infinitely can not be mentioned up
It rises, if the resonant frequency of operation of ultrasound knife vibrational system 5 exceeds the maximum frequency of ultrasound knife drive system internal oscillator circuit
When value, the following frequency of ultrasound knife drive system is unable to reach the resonant frequency of operation of ultrasound knife vibrational system 5, so that ultrasound knife
Working efficiency will substantially reduce, will damage ultrasound knife vibrational system and oscillating circuit when serious.
As shown in Figure 1, a kind of ultrasound knife equipment, including microcontroller 2, digital signal processor 3, touch screen 1 and inversion
Circuit 4, the microcontroller 2 realize serial communication, digital signal processor 3 with digital signal processor 3 and touch screen 1 respectively
It is connect by inverter circuit 4 with ultrasound knife vibrational system 5, ultrasound knife vibrational system 5 and ultrasound knife current sensor 6, ultrasound knife
Voltage sensor 7 and Current Voltage phase difference sensor 8 connect, for monitoring the electric current, power supply and electricity of ultrasound knife vibrational system 5
The phase difference of stream and voltage.
Use the ultrasound knife equipment of said frequencies auto-reset method, specific work process are as follows:
Start ultrasound knife equipment, microcontroller 2 controlled by touch screen 1 and sends frequency sweep order to digital signal processor 3,
Digital signal processor 3 carries out frequency sweep to ultrasound knife vibrational system, obtains the starting resonance frequency of ultrasound knife vibrational system 5；
It controls microcontroller 2 by touch screen 1 and is sent to digital signal processor 3 and start work order, at digital signal
The output of device 3 pwm signal corresponding with starting resonance frequency is managed to inverter circuit 4；
The actuation drive signals driving ultrasound knife vibrational system 5 that inverter circuit 4 exports corresponding frequencies works；
Ultrasound knife current sensor 6, ultrasound knife voltage sensor 7 and the real time monitoring of Current Voltage phase difference sensor 8 are super
Electric current, the voltage and current voltage phase difference of sound knife vibrational system 5 are uploaded to digital signal processor 3；Digital signal processor 3
The electric current of ultrasound knife vibrational system, voltage and current voltage phase difference obtain the operational resonant of ultrasound knife vibrational system by analysis
Frequency, and be monitored；
When ultrasound knife works, the resonant frequency of operation of ultrasound knife vibrational system and the following frequency of ultrasound knife drive system are protected
It holds unanimously, if maximum frequency of the resonant frequency of operation of ultrasound knife vibrational system 5 beyond ultrasound knife drive system, at digital signal
It manages device 3 and sends information to microcontroller, microcontroller 2 prompts operator to mitigate ultrasound knife cutter head by the prompt alarm of touch screen 1
Pressure or cancel pressure applied to ultrasound knife cutter head, 3 performance of digital signal processor receives the electricity of ultrasound knife vibrational system 5
Stream, voltage and current voltage phase difference obtain the resonant frequency of operation of ultrasound knife vibrational system；
Microcontroller 2 controls digital signal processor 3 and assigns ultrasound knife drive system starting resonance frequency again；
Mitigate the pressure of ultrasound knife cutter head or cancel and pressure is applied to ultrasound knife cutter head, so that the work of ultrasound knife vibrational system
Within the scope of the bandwidth that resonance frequency returns to ultrasound knife drive system, by adjusting the electric current and voltage phase of ultrasound knife vibrational system
Position, is consistent the following frequency of ultrasound knife drive system and the resonant frequency of operation of ultrasound knife vibrational system 5.
The resonant frequency of operation of ultrasound knife vibrational system 5 is typically in super within the scope of the bandwidth of ultrasound knife drive system
± the 500HZ of sound knife drive system internal oscillator circuit centre frequency just can guarantee that the working efficiency of ultrasound knife is maximum；Work as operation
When the pressure that person applies ultrasound knife cutter head is excessive, the resonant frequency of operation of ultrasound knife vibrational system 5 will rise, if holding always
Continue and apply excessive pressure to ultrasound knife cutter head, the resonant frequency of operation of ultrasound knife vibrational system 5 is beyond ultrasound knife drive system
Bandwidth range, that is, exceed the upper limiting frequency of ultrasound knife drive system, and traditional ultrasound knife equipment will cause ultrasound knife drive system
Frequency lose, ultrasound knife vibrational system 5 can not work normally；In the application, when the operational resonant frequency of ultrasound knife vibrational system 5
When rate rises to the upper limiting frequency of ultrasound knife drive system, microcontroller 2 issues warning note by touch screen 1, prompts operation
Person, which mitigates, to be applied pressure to ultrasound knife cutter head or cancels the pressure of ultrasound knife cutter head, is made the deattenuation of ultrasound knife cutter head or is 0；
Control digital signal processor 3 assigns the starting resonance frequency of ultrasound knife drive system ultrasound knife vibrational system 5, or ultrasound again
Knife vibrational system 5 originates frequency near resonance frequency；When operator starts to mitigate the pressure to ultrasound knife cutter head or cancels
When the pressure of ultrasound knife cutter head, the frequency of ultrasound knife drive system with the resonant frequency of operation of ultrasound knife vibrational system 5 not
Unanimously, the resonant frequency of operation of ultrasound knife vibrational system 5 can not be followed；When prompt, operator mitigates to ultrasound knife cutter head
Apply pressure or cancel the pressure of ultrasound knife cutter head, thus the cutter head deattenuation of ultrasound knife or be zero, ultrasound knife vibration system
The resonant frequency of operation of system returns within the scope of the bandwidth of ultrasound knife drive system, adjusts the electric current and electricity of ultrasound knife vibrational system 5
Pressure phase makes the following frequency of ultrasound knife drive system consistent with the resonant frequency of operation of vibrational system 5, does not stop energy
Output.The resonant frequency of operation of the above process repeatedly, ultrasound knife vibrational system 5 can be quickly returning to ultrasound knife drive system
Bandwidth within the scope of, hardly influence operator operation.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (7)
1. a kind of ultrasound knife resonance frequency tracks auto-reset method, which is characterized in that specific steps are as follows:
Obtain the starting resonance frequency of ultrasound knife vibrational system；
Monitor the resonant frequency of operation of ultrasound knife vibrational system in real time, and judge the resonant frequency of operation of ultrasound knife vibrational system with
Whether the following frequency of ultrasound knife drive system is consistent；
If the resonant frequency of operation of ultrasound knife vibrational system exceeds the maximum value of ultrasound knife drive system following frequency, operation is prompted
The cutter head damping of person's ultrasound knife is excessive, assigns the starting resonance frequency of ultrasound knife drive system ultrasound knife vibrational system again；
Reduce cutter head damping, the resonant frequency of operation of ultrasound knife vibrational system is made to return to the bandwidth range of ultrasound knife drive system；
The electric current of ultrasound knife vibrational system and the phase of voltage are adjusted, so that the following frequency and ultrasound knife of ultrasound knife drive system
The resonant frequency of operation of vibrational system is consistent again.
2. frequency auto-reset method as described in claim 1, which is characterized in that the real time monitoring ultrasound knife vibrational system
Resonant frequency of operation, and judge that the following frequency of the resonant frequency of operation and ultrasound knife drive system of ultrasound knife vibrational system is
It is no consistent, specifically: when ultrasound knife works, the work with ultrasound knife vibrational system always of the following frequency of ultrasound knife drive system
Resonance frequency is consistent, so that the working efficiency of ultrasound knife reaches maximum.
3. frequency auto-reset method as described in claim 1, which is characterized in that described to assign ultrasound knife drive system again
The starting resonance frequency of ultrasound knife vibrational system specifically: when the resonant frequency of operation of ultrasound knife vibrational system is driven beyond ultrasound knife
The maximum value of dynamic system following frequency, assigns the starting vibration frequency of ultrasound knife drive system ultrasound knife vibrational system, i.e., again
Ultrasound knife drive system originates resonance frequency according to the starting resonance frequency or ultrasound knife vibrational system of ultrasound knife vibrational system
Neighbouring rate-adaptive pacemaker.
4. a kind of ultrasound knife equipment, which is characterized in that use frequency auto-reset method described in claims 1 or 22 or 3, packet
Include microcontroller, digital signal processor, touch screen and passive electrical die mould inverter circuit, the microcontroller respectively with the number
Word signal processor and the touch screen realize that serial communication, the digital signal processor are chattered by inverter circuit and ultrasound
Dynamic system connection, the ultrasound knife vibrational system and ultrasound knife current sensor, ultrasound knife voltage sensor and Current Voltage phase
Potential difference sensor connection, for monitoring the electric current, power supply and its phase difference of ultrasound knife vibrational system.
5. a kind of ultrasound knife equipment as claimed in claim 4, which is characterized in that the inverter circuit is the inversion of passive electrical die mould
Circuit.
6. a kind of ultrasound knife equipment as claimed in claim 4, which is characterized in that the microcontroller is STM32 type single-chip microcontroller.
7. a kind of ultrasound knife equipment as claimed in claim 4, which is characterized in that the digital signal processor is DSP processing
Device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736584.1A CN110448355B (en) | 2019-08-09 | 2019-08-09 | Ultrasonic knife resonant frequency tracking automatic reset method and equipment thereof |
| PCT/CN2020/086064 WO2021027314A1 (en) | 2019-08-09 | 2020-04-22 | Ultrasonic knife resonant frequency tracking automatic reset method and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736584.1A CN110448355B (en) | 2019-08-09 | 2019-08-09 | Ultrasonic knife resonant frequency tracking automatic reset method and equipment thereof |
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| CN110448355A true CN110448355A (en) | 2019-11-15 |
| CN110448355B CN110448355B (en) | 2020-04-07 |
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| CN201910736584.1A Active CN110448355B (en) | 2019-08-09 | 2019-08-09 | Ultrasonic knife resonant frequency tracking automatic reset method and equipment thereof |
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| WO (1) | WO2021027314A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021027314A1 (en) * | 2019-08-09 | 2021-02-18 | 珠海维尔康生物科技有限公司 | Ultrasonic knife resonant frequency tracking automatic reset method and device thereof |
| WO2021036302A1 (en) * | 2019-08-26 | 2021-03-04 | 珠海维尔康生物科技有限公司 | Ultrasonic scalpel center frequency dynamic adjustment method, and ultrasonic scalpel |
| EP3868315A1 (en) | 2020-02-18 | 2021-08-25 | SMTP Medical Co., Ltd. | Ultrasonic surgical system |
| CN116725630A (en) * | 2022-10-28 | 2023-09-12 | 江西远赛医疗科技有限公司 | Initial resonant frequency determining method and device, electronic equipment and storage medium |
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| CN114129226B (en) * | 2021-12-30 | 2024-03-12 | 苏州领微医疗科技有限公司 | Ultrasonic knife and method and system for searching acoustic resonance frequency of ultrasonic knife |
| CN115670591B (en) * | 2023-01-03 | 2023-06-09 | 上海逸思医疗科技股份有限公司 | Energy output control method, device and equipment of ultrasonic knife system and medium |
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| WO2021036302A1 (en) * | 2019-08-26 | 2021-03-04 | 珠海维尔康生物科技有限公司 | Ultrasonic scalpel center frequency dynamic adjustment method, and ultrasonic scalpel |
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| Publication number | Publication date |
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| WO2021027314A1 (en) | 2021-02-18 |
| CN110448355B (en) | 2020-04-07 |
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