CN108210063A - Ultrasound-driven power monitoring apparatus - Google Patents
Ultrasound-driven power monitoring apparatus Download PDFInfo
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- CN108210063A CN108210063A CN201711466168.1A CN201711466168A CN108210063A CN 108210063 A CN108210063 A CN 108210063A CN 201711466168 A CN201711466168 A CN 201711466168A CN 108210063 A CN108210063 A CN 108210063A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00779—Power or energy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00779—Power or energy
- A61B2018/00785—Reflected power
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention provides a kind of ultrasound-driven power monitoring apparatus, include power coupling unit (1), power detecting unit (2) and power data collecting unit (3)；Power coupling unit (1), power detecting unit (2), power data collecting unit (3) are sequentially connected；Power coupling unit (1)：Ultrasound drive signals are received, the power signal of the ultrasound-driven of output coupling decays to power signal or unattenuated；The power signal includes incident power signal and reflected power signal；Power detecting unit (2)：D. c. voltage signal will be converted into through attenuation or the power signal without attenuation；Power data collecting unit (3)：D. c. voltage signal is converted into digital signal, and carry out data calculating to digital signal.The present invention can not only monitoring driving circuit in real time incident power and reflection power, moreover it is possible to the working condition of driving circuit is judged by performance number, while voltage standing wave ratio can be calculated and then assess impedance matching.
Description
Technical field
The present invention relates to a kind of ultrasonic monitoring equipment, and in particular, to a kind of ultrasound-driven power monitoring apparatus, particularly
A kind of device that ultrasound-driven power is treated for monitoring in real time.
Background technology
Treatment ultrasound is gradually widely recognized in tumour heating ablation field in recent years.The principle for treating ultrasound is as follows：It is logical
It crosses energy converter to be converted into ultrasound and can and energy be focused on target area the electric energy for treating ultrasound-driven circuit output, organizes target area
The temperature short time rise to 65 DEG C or more, tumor tissues and then protein coagulating necrosis occurs.By accurate and stabilization
The temperature and range of the adjustable zone of ablation of energy output, therefore, realizing the accurate control of output energy has treatment ultrasound safety
Effect ground ablated tumor is extremely crucial, and the accurate control for exporting energy is related to treating the real-time monitoring of ultrasound-driven power.
Through the literature search discovery to the prior art, it is online that patent document CN103916202B discloses a kind of radio-frequency cable
Fault monitoring device, including：The directional coupler of coupling output is carried out to the electromagnetic wave signal of input, coupler output port
Power detecting unit, the analog-digital converter and control unit of power take-off；By to directional coupler input port and defeated
The transmission signal of the radio-frequency cable of exit port carries out signal coupling, power detection, power data analysis so as to judge radio-frequency cable
Whether break down.The device has the following disadvantages：If the first, the transmitted signal power of radio-frequency cable is excessive, from orientation coupling
The signal power value that clutch input port is coupled out may exceed power detection range, therefore, the device monitoring radio-frequency cable
Signal power range is limited to power detection range；2nd, the device only monitor cable whether failure, and be not implemented power it is online
Monitoring；3rd, the device is applied to radio frequency electromagnetic field, category high-frequency range, wherein directional coupler and power detecting unit
Working band may be not particularly suited for treatment ultrasound field.
Patent document CN204261207U provides a kind of power monitor of high intensity focused ultrasound instrument, including：Circuit
Plate, has the first observation circuit and the second observation circuit, and the first observation circuit is used to monitor the power of high intensity focused ultrasound instrument
The output power of amplifier, the energy converter that the second observation circuit is used to monitor high intensity focused ultrasound instrument reflex to power amplifier
Reflection power；First SMA radio frequency connecting pieces and the 2nd SMA radio frequency connecting pieces, for observation circuit and high intensity focused ultrasound
The electrical connection of circuit；The control device of data and high intensity focused ultrasound instrument is electrically connected the power by USB joint data line
Monitor；The power monitor can monitor the output power of power amplifier and the reflection of power amplifier is reflexed to through energy converter
Power.The power monitor that the patent document provides has the following disadvantages：First, using SMA radio frequency connecting pieces for high-strength
Degree focuses on the electrical connection of ultrasound circuitry, is unfavorable for expanding to the high intensity of other common radio frequency connecting pieces (such as BNC, N-type)
Focus on ultrasound circuitry；2nd, using USB joint data line, other frequently-used data communication modes (such as serial communication) are eliminated；
3rd, it does not illustrate and how according to power monitoring data to judge that power is excessive and reflection power is excessive, the quantization for lacking assessment refers to
Mark.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of ultrasound-driven power monitoring apparatus.
According to ultrasound-driven power monitoring apparatus provided by the invention, comprising power coupling unit, power detecting unit with
And power data collecting unit；Power coupling unit, power detecting unit, power data collecting unit are sequentially connected；
Power coupling unit：Receive ultrasound drive signals, the power signal of the ultrasound-driven of output coupling, to power signal
Decayed or unattenuated；The power signal includes incident power signal and reflected power signal；
Power detecting unit：D. c. voltage signal will be converted into through attenuation or the power signal without attenuation；
Power data collecting unit：D. c. voltage signal is converted into digital signal, and carry out data meter to digital signal
It calculates.
Preferably, the power coupling unit includes sequentially connected dual directional coupler, attenuator, the choosing of attenuator multichannel
Open up pass；
Also comprising ultrasound-driven circuit, the ultrasound-driven circuit output ultrasound drive signals；
The ultrasound-driven circuit includes ultrasound drive signals source and is loaded with ultrasound-driven.
Preferably, the dual directional coupler include first port, second port, third port and the 4th port this four
A port；
First port connection ultrasound-driven source；Second port connection ultrasound-driven load；Third port and the 4th port are equal
It is connect with attenuator：
The incident power signal of the ultrasound-driven of third port output coupling；The ultrasound-driven of 4th port output coupling
Reflected power signal；
The attenuator multi-channel gating switch control third port and the output signal of the 4th port enter attenuator.
Preferably, the impedance of first port, second port, third port, the 4th port is 50 Ω；
The working band of dual directional coupler is 0.5~5MHz, and the coefficient of coup is not less than 20dB；
The attenuator is connected using cascade system, and the working band of attenuator is 0.5~5MHz, and attenuation is not less than
3dB。
Preferably, the power detecting unit includes power detector；
The working band of power detector is 0.5~5MHz, and the dynamic range of power detector includes ultrasound drive signals
By the power bracket of dual directional coupler and attenuator.
Preferably, the power data collecting unit includes analog to digital converter and microcontroller；
Analog to digital converter is used to the d. c. voltage signal that power detector exports being converted into digital signal；Microcontroller
Device is used to digital signal carrying out data calculating.
Preferably, the Least sampling rate of the analog to digital converter is 100kHz, and minimum resolution is 8；
The microcontroller calculates incident power P according to digital signalfWith reflection power Pr, and calculated according to the following formula
Voltage standing wave ratio VSWR：
Preferably, the microcontroller is according to PfWith PrJudge the work shape of the circuit in ultrasound-driven power monitoring apparatus
State：
Work as Pf=PrWhen=0, judgement ultrasound-driven circuit is without input signal；
Work as Pf=Pr, Pf＞ 0, PrDuring ＞ 0, judgement ultrasound-driven load is in open-circuit condition；
Work as Pf＞ PrWhen >=0, judgement ultrasound-driven circuit normal work.
Preferably, when judging ultrasound-driven circuit normal work, microcontroller assesses ultrasound-driven circuit according to VSWR
Impedance matching：
As 1≤VSWR≤5, judge that the impedance matching of ultrasound-driven circuit is good, working condition is normal；
As VSWR ＞ 5, judge that the impedance matching of ultrasound-driven circuit is bad, working condition is abnormal.
Preferably, also comprising data transmission unit, data display unit and control terminal；
Data transmission unit is by Pf、PrAnd VSWR data are transferred to control terminal from microcontroller；
Data display unit shows ultrasound-driven circuit working state, PfNumerical value, PrAny in numerical value and VSWR numerical value
A or multiple information.
Compared with prior art, the present invention has following advantageous effect：
1st, the present invention can not only monitoring driving circuit in real time incident power and reflection power, moreover it is possible to judged by performance number
The working condition of driving circuit, while voltage standing wave ratio can be calculated and then assess impedance matching.
2nd, the present invention is not limiting as the transmission mode of power data, also non-limits device and the connection mode of driving circuit,
It is readily integrated into the driving circuit for the treatment of ultrasound.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is ultrasound-driven power monitoring apparatus structure diagram provided by the invention；
External connection schematic diagram when Fig. 2 is used for the present invention；
Fig. 3 is the structure diagram of one embodiment of the invention；
Fig. 4 is the internal structure schematic diagram of attenuator and attenuator gating switch in one embodiment of the invention.
It is shown in figure：
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
In the description of the present invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " top ", " bottom ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position
Relationship is put, be for only for ease of the description present invention and simplifies description rather than instruction or implies that signified device or element are necessary
With specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
As shown in Figure 1, ultrasound-driven power monitoring apparatus provided by the invention, includes power coupling unit 1, power detection
Unit 2 and power data collecting unit 3；Power coupling unit 1, power detecting unit 2, power data collecting unit 3 are successively
It is connected；Power coupling unit 1：Receive ultrasound drive signals, the power signal of the ultrasound-driven of output coupling, to power signal into
Row attenuation or unattenuated；The power signal includes incident power signal and reflected power signal；Power detecting unit 2：It will be through
Attenuation or the power signal without attenuation are converted into d. c. voltage signal；Power data collecting unit 3：D. c. voltage signal is turned
It changes digital signal into, and data calculating is carried out to digital signal.In addition, the present invention is also comprising ultrasound-driven circuit, the ultrasound
Driving circuit exports ultrasound drive signals；The ultrasound-driven circuit includes ultrasound drive signals source 6 and loads 7 with ultrasound-driven.
The power coupling unit 1 includes sequentially connected dual directional coupler 11, attenuator 12, attenuator multi channel selecting
Switch 13.The dual directional coupler 11 includes first port 111, second port 112,113 and the 4th port of third port
114 this four ports.First port 111 connects ultrasound-driven source 6；Second port 112 connects ultrasound-driven load 7；Third end
Mouth 113 is connect with the 4th port 114 with attenuator 12.Wherein, the incident work(of the ultrasound-driven of 113 output coupling of third port
Rate signal, the reflected power signal of the ultrasound-driven of 114 output coupling of the 4th port.The attenuator multi-channel gating switch 13 is controlled
The output signal of 113 and the 4th port 114 of third port processed enters attenuator 12.The power detecting unit 2 is examined comprising power
Wave device 21.Preferably, the impedance of first port 111, second port 112, third port 113, the 4th port 114 is 50 Ω；
The working band of dual directional coupler 11 is 0.5~5MHz, and the coefficient of coup is not less than 20dB.The attenuator 12 uses cascade side
Formula connects, and the working band of attenuator 12 is 0.5~5MHz, and attenuation is not less than 3dB.The working band of power detector 21 is
0.5~5MHz, the dynamic range of power detector 21 include ultrasound drive signals by dual directional coupler 11 and attenuator 12
Power bracket.That is, the working band of dual directional coupler 11, attenuator 12 and power detector 21 contains
Treat the frequency range of ultrasound
The power data collecting unit 3 includes analog to digital converter 31 and microcontroller 32；Analog to digital converter
31 are used to the d. c. voltage signal that power detector 21 exports being converted into digital signal；Microcontroller 32 is used for digital signal
Carry out data calculating.Preferably, the analog to digital converter 31 can complete incident power signal and reflected power signal this two
The conversion of road signal, Least sampling rate 100kHz, minimum resolution are 8.The microcontroller 32 is according to digital signal meter
It counts and penetrates power PfWith reflection power Pr, and voltage standing wave ratio VSWR is calculated according to the following formula：
Preferably, microcontroller 32 is according to PfWith PrJudge the working condition of the circuit in ultrasound-driven power monitoring apparatus,
It is specific as follows：
Work as Pf=PrWhen=0, judgement ultrasound-driven circuit is without input signal；
Work as Pf=Pr, Pf＞ 0, PrDuring ＞ 0, judgement ultrasound-driven load 7 is in open-circuit condition；
Work as Pf＞ PrWhen >=0, judgement ultrasound-driven circuit normal work.
Wherein, work as Pf＞ 0, PrWhen=0, driving circuit is to exactly match state, and ultrasound-driven circuit is normal work.By
There is no incident power P in driving circuitfThere will be no reflection power Pr, therefore reflection power PrNot more than incident power Pf,
In addition, incident power PfWith reflection power PrCan not possibly be negative value.
When judging ultrasound-driven circuit normal work, microcontroller 32 assesses the impedance of ultrasound-driven circuit according to VSWR
Matching, it is specific as follows：
As 1≤VSWR≤5, judge that the impedance matching of ultrasound-driven circuit is good, working condition is normal；
As VSWR ＞ 5, judge that the impedance matching of ultrasound-driven circuit is bad, working condition is abnormal.
Ultrasound-driven power monitoring apparatus provided by the invention also comprising data transmission unit 4, data display unit 5 and
Control terminal 8.Data transmission unit 4 is by Pf、PrAnd VSWR data are transferred to control terminal 8 from microcontroller 32, data are shown
Unit 5 shows ultrasound-driven circuit working state, PfNumerical value, PrAny one in numerical value and VSWR numerical value or multiple information.
As shown in Figure 1, the present invention two connectors of design, for accessing in HIFU driving circuits.
Preferred embodiment：As shown in Fig. 2, ultrasound-driven power monitoring apparatus by two BNC connectors respectively with work(
Rate amplifier and energy converter are electrically connected, and are carried out data transmission by UART and computer control terminal.Specifically, as schemed
Shown in 3, the power coupling unit 1 of the device is using the C5948 dual directional couplers 11 of Werlatone companies, ADI companies
HMC658LP2E attenuators 12 and attenuator multi-channel gating switch 13；The power detecting unit 2 of the device is using ADI companies
AD8363RMS power detectors 21；The power data collecting unit 3 of the device includes the AD9629-20 simulation numerals of ADI companies
Converter 31 and the STM32F103VET6 microcontrollers 32 of ST Microelectronics；The device includes the power number based on UART
According to transmission unit 4 and the power data display unit 5 based on LCD1604.As shown in figure 4, the HMC658LP2E attenuators 12
It is connected using cascade system, different capacity attenuation range is provided with reference to attenuator multi-channel gating switch 13.
It is realized known to AD8363RMS power detectors 21 in 32 internal composition program of STM32F103VET6 microcontrollers
Voltage power conversion formula and then calculating incident power PfWith reflection power Pr, and according to PfAnd PrVoltage standing wave ratio VSWR is calculated,
Formula is as follows,
STM32F103VET6 microcontrollers 32 can be according to PfAnd PrJudge the working condition of driving circuit, it is specific as follows,
(1)Pf=Pr=0, ultrasound-driven circuit is without input signal；
(2)Pf=Pr, Pf＞ 0, Pr＞ 0, ultrasound-driven load 7 are in open-circuit condition；
(3)Pf＞ Pr>=0, ultrasound-driven circuit normal work must further judge working condition with reference to VSWR.
STM32F103VET6 microcontrollers 32 assess the impedance matching of ultrasound-driven circuit according to VSWR, specific as follows,
(1) when 1≤VSWR≤5, the impedance matching of ultrasound-driven circuit is good, and working condition is normal；
(2) as VSWR ＞ 5, the impedance matching of ultrasound-driven circuit is bad, and working condition is abnormal.
The data transmission unit 4 based on UART connects STM32F103VET6 microcontrollers 32 and computer control eventually
End 8 carries out PfAnd PrAnd the real-time Transmission of VSWR data.It can real-time display driving circuit based on LCD1604 data display units 5
Working condition, PfAnd PrNumerical value and VSWR.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (10)
1. a kind of ultrasound-driven power monitoring apparatus, which is characterized in that include power coupling unit (1), power detecting unit (2)
And power data collecting unit (3)；Power coupling unit (1), power detecting unit (2), power data collecting unit (3) according to
It is secondary to be connected；
Power coupling unit (1)：Receive ultrasound drive signals, the power signal of the ultrasound-driven of output coupling, to power signal
Decayed or unattenuated；The power signal includes incident power signal and reflected power signal；
Power detecting unit (2)：D. c. voltage signal will be converted into through attenuation or the power signal without attenuation；
Power data collecting unit (3)：D. c. voltage signal is converted into digital signal, and carry out data meter to digital signal
It calculates.
2. ultrasound-driven power monitoring apparatus according to claim 1, which is characterized in that the power coupling unit (1)
Include sequentially connected dual directional coupler (11), attenuator (12), attenuator multi-channel gating switch (13)；
Also comprising ultrasound-driven circuit, the ultrasound-driven circuit output ultrasound drive signals；
The ultrasound-driven circuit includes ultrasound drive signals source (6) and loads (7) with ultrasound-driven.
3. ultrasound-driven power monitoring apparatus according to claim 2, which is characterized in that the dual directional coupler (11)
Include first port (111), second port (112), third port (113) and this four ports of the 4th port (114)；
First port (111) connects ultrasound-driven source (6)；Second port (112) connection ultrasound-driven load (7)；Third port
(113) it is connect with the 4th port (114) with attenuator (12)：
The incident power signal of the ultrasound-driven of third port (113) output coupling；The ultrasound of the 4th port (114) output coupling
The reflected power signal of driving；
Attenuator multi-channel gating switch (13) the control third port (113) and the output signal of the 4th port (114) enter
Attenuator (12).
4. ultrasound-driven power monitoring apparatus according to claim 3, which is characterized in that first port (111), second end
The impedance of mouth (112), third port (113), the 4th port (114) is 50 Ω；
The working band of dual directional coupler (11) is 0.5~5MHz, and the coefficient of coup is not less than 20dB；
The attenuator (12) is connected using cascade system, and the working band of attenuator (12) is 0.5~5MHz, and attenuation is not small
In 3dB.
5. ultrasound-driven power monitoring apparatus according to any one of claim 2 to 4, which is characterized in that the power
Detection unit (2) includes power detector (21)；
The working band of power detector (21) is 0.5~5MHz, and the dynamic range of power detector (21) includes ultrasound-driven
Signal passes through the power bracket of dual directional coupler (11) and attenuator (12).
6. ultrasound-driven power monitoring apparatus according to claim 5, which is characterized in that the power data collecting unit
(3) comprising analog to digital converter (31) and microcontroller (32)；
D. c. voltage signal of the analog to digital converter (31) for power detector (21) to be exported is converted into digital signal；It is micro-
Controller (32) for by digital signal carry out data calculating.
7. ultrasound-driven power monitoring apparatus according to claim 6, which is characterized in that the analog to digital converter
(31) Least sampling rate is 100kHz, and minimum resolution is 8；
The microcontroller (32) calculates incident power P according to digital signalfWith reflection power Pr, and calculated according to the following formula
Voltage standing wave ratio VSWR：
8. ultrasound-driven power monitoring apparatus according to claim 7, which is characterized in that microcontroller (32) basis
PfWith PrJudge the working condition of the circuit in ultrasound-driven power monitoring apparatus：
Work as Pf=PrWhen=0, judgement ultrasound-driven circuit is without input signal；
Work as Pf=Pr, Pf＞ 0, PrDuring ＞ 0, judgement ultrasound-driven load (7) is in open-circuit condition；
Work as Pf＞ PrWhen >=0, judgement ultrasound-driven circuit normal work.
9. ultrasound-driven power monitoring apparatus according to claim 8, which is characterized in that when judgement ultrasound-driven circuit just
Often during work, microcontroller (32) assesses the impedance matching of ultrasound-driven circuit according to VSWR：
As 1SWR≤5, judge that the impedance matching of ultrasound-driven circuit is good, working condition is normal；
As VSWR ＞ 5, judge that the impedance matching of ultrasound-driven circuit is bad, working condition is abnormal.
10. ultrasound-driven power monitoring apparatus according to claim 9, which is characterized in that also comprising data transmission unit
(4), data display unit (5) and control terminal (8)；
Data transmission unit (4) is by Pf、PrAnd VSWR data are transferred to control terminal (8) from microcontroller (32)；
Data display unit (5) shows ultrasound-driven circuit working state, PfNumerical value, PrAny in numerical value and VSWR numerical value
A or multiple information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466168.1A CN108210063A (en) | 2017-12-28 | 2017-12-28 | Ultrasound-driven power monitoring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466168.1A CN108210063A (en) | 2017-12-28 | 2017-12-28 | Ultrasound-driven power monitoring apparatus |
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| CN108210063A true CN108210063A (en) | 2018-06-29 |
Family
ID=62645675
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711466168.1A Pending CN108210063A (en) | 2017-12-28 | 2017-12-28 | Ultrasound-driven power monitoring apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113114200A (en) * | 2021-05-21 | 2021-07-13 | 中惠医疗科技（上海）有限公司 | Half-bridge resonance ultrasonic drive circuit with power monitoring function |
| CN113532627A (en) * | 2020-04-13 | 2021-10-22 | 上海交通大学 | Power monitoring device for multiple driving signals |
| CN114340476A (en) * | 2019-08-29 | 2022-04-12 | 安德拉生命科学公司 | Method and system for determining at least one parameter of interest of a material |
| CN117481752A (en) * | 2023-12-12 | 2024-02-02 | 谱创医疗科技(上海)有限公司 | Medical ultrasonic ablation equipment control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114340476A (en) * | 2019-08-29 | 2022-04-12 | 安德拉生命科学公司 | Method and system for determining at least one parameter of interest of a material |
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Application publication date: 20180629 |
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