CN103386171A - Ultrasonic waveguide provided with cooling system - Google Patents
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- CN103386171A CN103386171A CN2013103485071A CN201310348507A CN103386171A CN 103386171 A CN103386171 A CN 103386171A CN 2013103485071 A CN2013103485071 A CN 2013103485071A CN 201310348507 A CN201310348507 A CN 201310348507A CN 103386171 A CN103386171 A CN 103386171A
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Abstract
The invention discloses an ultrasonic waveguide provided with a cooling system. The ultrasonic waveguide comprises an ultrasonic waveguide casing and an ultrasonic transducer, wherein an opening is formed in the top of the ultrasonic waveguide casing; the ultrasonic transducer is connected with the ultrasonic waveguide casing through the opening in the top of the ultrasonic waveguide casing; and a cooling medium inlet and a cooling medium outlet are formed in the heat exchanger. According to the ultrasonic waveguide provided with the cooling system, a waveguide cap is added at the top end of a small opening of a conventional ultrasonic waveguide structure, so that an accurate spacial position relation between an ultrasonic focal spot and a conductive film interface at a waveguide cap top part is guaranteed, and three-dimensional precise positioning is not required for calibration. Therefore, the use efficiency is improved greatly and the use cost is reduced; and a heat exchange structure is added, the heat produced in a working process of the ultrasonic transducer is taken away through a flowing cooling medium, and the temperature can be regulated, so that overheat damage caused by long-time working of a device is avoided.
Description
Technical field
The present invention relates to ultrasound waveguide, specifically with the ultrasound waveguide of cooling system.
Background technology
Use ul-trasonic irradiation in organism, realize the therapeutic effect to disease.Ultimate principle is to launch the ultrasound wave of characteristic frequency, power, direction and focal spot size by ultrasonic transducer, and by ultrasound wave conducting structure (being ultrasound waveguide), ultrasonic energy is gathered in the specific region of biological tissue, and then the tissue in this zone is produced biochemical action and realizes therapeutic goal.
In the ultrasound wave conducting structure of this quasi-tradition, ultrasonic transducer is connected on cone-shaped cavity (being the ultrasound waveguide housing) large mouthful of a plastic material, and is sealed.The osculum of cone-shaped cavity (being called for short " cone ") seals with conducting membranes, makes whole cone be the sealing state.Cone inside is full of degassed water as the ultrasound wave transmitting medium, and conducting membranes is as the surface that contacts with organism.Its operation principle is: ultrasonic transducer emission ultrasound wave, ultrasound wave is coupled into cone from large mouthful of cone by degassed water, conduction by water arrives and converges in cone osculum place, and by conducting membranes, is coupled and launches from the cone osculum, acts on organism.
The problem that traditional ultrasound wave conducting structure exists comprises:
1, mostly use focused transducer in ultrasonic therapy.In order to guarantee that the predetermined action position is on the ultrasound wave focal spot, need in traditional ultrasound wave conducting structure all must position calibration before each operation, namely use three-dimensional Precision Position Location System first to utilize hydrophone to determine focal spot position.The calibration use hydrophone and three-dimensional Precision Position Location System price all more expensive, complicated operation, and accuracy and concordance not high.
2, the ultrasound wave that is used for the treatment of has certain power, is the mechanical vibration of particle in essence due to ultrasound wave, therefore must cause ultrasonic transducer and conducting structure to generate heat in the course of the work.In traditional method not with the structure for cooling, therefore when focused transducer and conducting structure after working long hours under higher-wattage, local or whole temperature may, over the limit of equipment, cause overheated damage.
3, in traditional ultrasound wave conducting structure, the medium that is used for ultrasonic wave-coupled and conduction can produce bubble at ul-trasonic irradiation after a period of time, causes extra ultrasonic conducting decay or shielding, thereby affects effect and the stability of equipment work.
4, in order to avoid in actual use the impact of the problems referred to above on curative effect, need to be in the equipment use procedure the hyperacoustic power of manual control, continuous working period and operation range.The operational approach that operator must be familiar with being correlated with and points for attention, operation easier is large, and use cost is high, also is unfavorable for operator's quick training.
Summary of the invention
Goal of the invention: the problem and shortage for above-mentioned prior art exists the purpose of this invention is to provide the ultrasound waveguide with cooling system.
Technical scheme: for achieving the above object, the first technical scheme that the present invention adopts is a kind of ultrasound waveguide with cooling system, comprise ultrasound waveguide housing and ultrasonic transducer, the top of described ultrasound waveguide housing is provided with opening, described ultrasonic transducer is connected with the ultrasound waveguide housing by described opening, the outer wall of described ultrasound waveguide housing is provided with heat exchanger, and described heat exchanger is provided with cooling medium entrance and cooling medium outlet.
The second technical scheme that the present invention adopts is a kind of ultrasound waveguide with cooling system, comprise ultrasound waveguide housing and ultrasonic transducer, the top of described ultrasound waveguide housing is provided with opening, described ultrasonic transducer is connected with the ultrasound waveguide housing by described opening, and the sidewall of described ultrasound waveguide housing is provided with cooling medium entrance and cooling medium outlet.
Further, also comprise the waveguide cap, described waveguide cap is arranged on the bottom of ultrasound waveguide housing.
Beneficial effect: the present invention increases a waveguide cap by the osculum top at the conventional ultrasound waveguiding structure, guarantees the accurate spatial relation at ultrasound wave focal spot and waveguide crown section's conducting membranes interface, no longer needs three-dimensional precision positioning to calibrate.Thereby can greatly improve service efficiency, reduce use cost; Add heat exchange structure, by the cooling medium that flows, take away the heat that produces in the ultrasonic transducer work process, can also regulate temperature, avoid equipment to work long hours and cause overheated damage.
Description of drawings
Fig. 1 (a) is the structural representation of the ultrasound waveguide with the waveguide cap;
Fig. 1 (b) is the scheme of installation (cutaway view) of waveguide cap;
Fig. 1 (c) is the specific embodiment schematic diagram of waveguide cap;
Fig. 2 is the cooling structural representation of interior exchange;
Fig. 3 is the cooling structural representation of open interior exchange;
Fig. 4 is the cooling structural representation of exchange in closed type;
Fig. 5 is the cooling structural representation of outer exchange;
Fig. 6 is the cooling structural representation of open outer exchange;
Fig. 7 is the cooling structural representation of the outer exchange of closed type;
Fig. 8 is the open loop control mode system architecture diagram;
Fig. 9 is the close-loop control mode system architecture diagram;
Figure 10 is the cooling structural representation of open outer exchange that open loop is controlled;
Figure 11 is the cooling structural representation of the interior exchange of the closed type of closed loop control.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is not used in and limits the scope of the invention for explanation the present invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
One, increase a structural member---waveguide cap on the osculum top of conventional ultrasound waveguiding structure, as shown in Figure 1 (a) and Fig 1 (b) shows, in figure, 1, ultrasonic transducer, 2, ultrasound waveguide housing, 4, waveguide cap, 100, ultrasound wave conductive membranes (be called for short " conductive membranes "), 7, the ultrasonic transducer holding wire, 41, waveguide connector, 42, aligning wave guides, 43, the conductive membranes pedestal, the following structural features of waveguide cap:
Waveguide cap 4 upper ends are waveguide connectors 41, and waveguide connector (abbreviation " adapter ") 41 done rigid seal with the bottom opening of ultrasound waveguide cone (or title " ultrasound waveguide housing ") 2 and be connected.The bottom of waveguide connector 41 is aligning wave guides 42, and the Main Function of aligning wave guides is established the position relationship between waveguide cap front end and ultrasound wave focal spot.The lower tip of aligning wave guides 42 is conductive membranes pedestals 43, is used for conductive membranes 100 fixing and sealing waveguide cap 4 lower tip.Waveguide cap 4 contacts with organism by conductive membranes 100, makes the ultrasound wave good coupling to biological tissue.
Each waveguide cap 4 guarantees hyperacoustic coupling effect by its physical dimension and material, makes under the working condition of regulation, and final focal spot size, locus and the power that forms reaches different specification requirements.For realizing different conducting effects, the waveguide cap can have number of different types, the difference of type include but not limited to profile and inside dimension, structural member material, operation wavelength/frequency, conducted power size, with connected mode, the top conducting membranes type of ultrasound waveguide.By coordinating different ultrasonic transducer (different modes include but not limited to: overall dimensions, operation wavelength/frequency, operation principle, transmitting power size, mode of operation), and coordinating different ultrasound waveguides (different modes include but not limited to: profile and inside dimension, operation wavelength/frequency, conducted power size, structural member material, ultrasound wave transmitting medium type), the waveguide cap of a model can be used for the ultrasonic equipment of one or more models.Owing to being by designing and calculating and accurately processing the accurate spatial relation that guarantees ultrasound wave focal spot and waveguide crown section's conducting membranes interface, so the ultrasound wave focal spot that user only need to select correct ultrasound waveguide and waveguide cap to obtain to expect, no longer need three-dimensional precision positioning to calibrate.Thereby can greatly improve service efficiency, reduce use cost.
To comprise the transport properties of this waveguide cap in the title of waveguide cap, model and parameter declaration, the characteristic content includes but not limited to: distance, positioning precision, the life-span of operation wavelength/frequency, power bracket, focal spot size, focal spot center and end face (thin film contact surface).And according to the parameter that practical situation is expressed need, mark in the remarkable position of waveguide cap outside.User can determine easily which kind of ultrasonic this hyperacoustic operating characteristic that involves current device has used, and the proof-reading that avoids trouble, reduce operation easier greatly.
The waveguide cap can be permanent or dismountable with being connected of ultrasound waveguide housing.The conductive membranes of waveguide crown section can be permanent or removable.
For avoiding that a waveguide cap is coordinated with ultrasound waveguide cone and ultrasonic transducer mistake, the connected mode of waveguide cap and ultrasound waveguide cone can define various ways, and makes objectionable intermingling between various definition.Thereby the waveguide cap that makes a model cannot be arranged on ultrasound waveguide cone outside prescribed limit.
Two, add temperature to control and detection architecture on ultrasound waveguide
Add heat exchange structure on traditional ultrasound waveguide cone structure, by the cooling medium that flows, take away the heat that produces in the ultrasonic transducer work process.According to the difference of heat exchange method, cooling structure is divided into cooling 2 kinds of the cooling and outer exchange of interior exchange.
1 interior exchange is cooling
(1) as shown in Figure 2, ultrasonic transducer holding wire 1, ultrasonic transducer, 2, the ultrasound waveguide housing, 3, cooling medium, 4, the waveguide cap, 5, the cooling medium entrance, 6, the cooling medium outlet, 7.At the upper entrance and exit that increases of traditional sealing ultrasound waveguide cone (being called for short " waveguide vertebral body " or " vertebral body ").Low temperature waveguide medium (degassed water) is by the inlet streams incoming wave starting taper body on cone, and the heat exchange of being heated in cone inside, then flow out the waveguide cone by the outlet on cone, takes away heat.The feature of the interior exchange type of cooling is that waveguide medium is also cooling medium simultaneously., by the power of adjusting ultrasonic transducer and the flow velocity of waveguide medium, bulk temperature can be controlled in preset range., if design pointedly again the flow path of waveguide medium in cone, can also control the temperature of specific portion.
(2) flowing of waveguide medium can be open, as shown in Figure 3, and 8, cooling medium source (low temperature), 9, valve, 10, defecator, 11, depassing unit, 12, one-way pump, 13, cooling medium collecting pit (high temperature).In open flowing, the low temperature waveguide medium (is called for short " medium source "), by no longer returning to medium source after the waveguide cone from the cooling medium source.Flowing of waveguide medium can be also closed type, as shown in Figure 4, and 14, the waveguide medium pond, 15, circulating pump, 16, radiator.Under the effect of circulating pump, the low temperature waveguide medium is from medium source, and the process depassing unit is removed the bubble in waveguide medium, then after defecator, by becoming the high temperature waveguide medium after the waveguide cone.The high temperature waveguide medium enters radiator and carries out cooling.Low temperature waveguide medium after cooling returns to medium source, restarts next cool cycles.
2 outer exchanges are cooling
(1) do not change the hermetically-sealed construction of conventional ultrasonic wave cone, at the outside additional heat exchanger of cone, as shown in Figure 5,17, the acoustic conductance medium, 18, heat exchanger housing, 19, heat exchanger.Spiral tube structure in heat exchanger makes a waveguide cone ancient piece of jade, round, flat and with a hole in its centre can transfer heat to cooling medium.Cooling medium is inner from the entrance inflow heat exchanger of heat exchanger, is passed through the outlet outflow heat exchanger after the heating of waveguide cone wall, takes away heat.The feature of the outer exchange type of cooling is that cooling medium and waveguide medium can be different and both do not mix, and cooling medium can be any liquid medium that can absorb heat., by the power of adjusting ultrasonic transducer and the flow velocity of cooling medium, bulk temperature can be controlled in preset range., if design pointedly again the flow path of cooling medium, can also control the temperature of specific portion.
(2) flowing of cooling medium can be open, as shown in Figure 6.In open flowing, cooling medium is from the cooling medium source, by no longer returning to medium source after heat exchanger.Flowing of cooling medium can be also closed type, as shown in Figure 7.Under the effect of circulating pump, low-temperature cooling media, from medium source, is become the high temperature cooling medium after the waveguide cone heating in heat exchanger, then enter radiator and carry out cooling.Low-temperature cooling media after cooling returns to medium source, restarts next cool cycles.
3 temperature control methods
, in order to regulate temperature, need the transmission power adjustment cooling parameter according to ultrasonic transducer., according to control mode, can take following several class methods to control.
(1) open loop control mode
System architecture diagram as shown in Figure 8, A, ultrasonic signal generator, B, ultrasonic power amplifier, C, ultrasonic transducer, D, ultrasound waveguide, E, waveguide cap, F, temperature controller, G, pump, H, valve, I, radiator, J, degasification and defecator, K, control signal, L, heat alarm, M, temperature alarming switch.Result according to Theoretical Calculation and experiment, determine a model ultrasonic transducer and supporting ultrasound waveguide and the temperature characterisitic model of waveguide cap, in use the running parameter of temperature conditioning unit is regulated in the position in model according to current working, and concrete adjusting content includes but not limited to: the duty (using when interior exchange is cooling) of the duty of the duty of pump, the duty of valve, radiator (using while adopting the cooling medium closed type to flow), filtration and degassing apparatus.While by these class methods, regulating temperature, the temperature of regulating content and current ultrasound waveguide is irrelevant.For avoiding abnormal conditions, can add the temperature alarming switch on ultrasound waveguide, thereby send heat alarm emergency cut-off ultrasonic power amplifier to the ultrasonic power amplifier when the ultrasound waveguide temperature surpasses the limit allowable, avoid the overheated damage of ultrasonic transducer.
(2) close-loop control mode
System architecture diagram as shown in Figure 9, N, temperature sensor, O, temperature data.Place one or more temperature, flow sensor in ultrasonic transducer, ultrasound waveguide and waveguide cap.Temperature control system is regulated the running parameter of temperature conditioning unit according to current system integral body or local temperature, concrete adjusting content includes but not limited to: the duty (using when interior exchange is cooling) of the duty of the duty of pump, the duty of valve, radiator (using while adopting the cooling medium closed type to flow), filtration and degassing apparatus.While by these class methods, regulating temperature, the adjusting content is relevant with integral body or the local temperature of current ultrasound waveguide, whole or local temperature accurately can be controlled within the specific limits.When causing the ultrasound waveguide temperature to surpass the limit allowable because of cause specific (as cooling system failure), thereby temperature controller leads to the ultrasonic power amplifier sends heat alarm emergency cut-off ultrasonic power amplifier, avoids the overheated damage of ultrasonic transducer.
(3) above two class modes is combined with.
By the way, can effectively control the temperature of ultrasonic equipment, avoid the apparatus overheat damage.Simultaneously also can make the operating mode of equipment more stable, thereby increase work efficiency and equipment life, reduce operation easier and the use cost of user.
Example:
Waveguide cap concrete scheme:
As shown in Fig. 1 (c).Waveguide cap strip matter is nylon.Waveguide cap top adapter is metric system M20 female thread, and ultrasound waveguide lower housing portion top is the M20 external screw thread, is that screw threads for fastening (97) connects between both.Adopt rubber washer (99) sealing between waveguide cap and ultrasound waveguide housing.Conductive membranes (100) adopts polyurethane film.Prefabricated thin polyurethane diaphragm is rounded, and circumference is fixed on sealing ring (98) by adhering with epoxy resin (96), and sealing ring is fixed on the conductive membranes pedestal (43) of waveguide cap lower end by adhering with epoxy resin (96).
Waveguide cap side mark waveguide cap model and running parameter, for example " CAP-02A-201515 500k/12/06/P34/T40 ".Wherein model is " CAP-02A-201515 ", and " CAP " expression parts are the waveguide cap, and " 02A " is production code member, " 201515 " expression waveguide length 20mm, inlet diameter 15mm, outlet diameter 15mm; " 500k/12/06/P35/T40 " represents that respectively running parameter is: conduction frequency 500kHz, focal spot centre distance conductive membranes center 12mm, focused spot diameter 6mm, 35 watts of maximum conductance power, 40 degrees centigrade of the operating temperature upper limits.
Adopt outer exchange open mobile cooling, the open loop temperature is controlled.In conjunction with shown in Figure 10,20, faucet, 21, temperature controller, 22, electric control valve, 23, temperature switch, 24, manually-operated gate, 25, the tap water collecting pit, 26, ultrasonic signal generator, 27, the ultrasonic power amplifier.Be attached with spiral-tube heat exchanger in the ultrasound waveguide hull outside, cooling medium flows into serpentine pipe from porch, absorbs the heat of ultrasound waveguide housing wall, and from exit, flows out.Cooling medium is tap water, and mobilization dynamic is provided by tap water pipe line pressure, regulates the flow velocity of tap water by an electric control valve.Temperature controller has the two-way input, connects respectively the temperature switch of ultrasonic power amplifier duty output interface and cooling line entrance.During lower than the temperature reference value set, the inlet temperature switch cuts out when ambient temperature, and temperature controller is not worked, and electric control valve keeps closing.When ambient temperature during higher than the temperature reference value set, the inlet temperature switch open, temperature controller is started working.Under the temperature controller duty, calculate the valve operation amount according to operating power and the tap water inlet temperature of ultrasonic transducer, according to the switching of valve operation amount regulation and control electric control valve.When the output of ultrasonic power amplifier changed in 0～100% scope, temperature controller operation electric control valve open angle also changed in 0～100% scope, and output and valve operation amount meet following corresponding relation: TH=k*L.In formula:
TH: the valve operation amount represents the open ratio of valve, numerical range 0～1.0 interval scale is closed, and 1 represents standard-sized sheet.
K: the regulation and control ratio represents the proportionate relationship between bearing power and valve open angle, numerical range 0～1.
L: load factor represents output and the full power ratio of ultrasonic transducer, numerical range 0～1.0 represents that ultrasonic transducer do not work, and 1 represents that ultrasonic transducer operates at full capacity.
(as fine setting flow velocity or electric control valve fault time) in some cases, need to carry out manual flow rate regulation.For realizing this function, at the other manually-operated gate pipeline in parallel of electric control valve pipeline.No matter whether electric control valve works, and manually-operated gate can carry out flow rate regulation.
In adopting, the exchange closed type is mobile cooling, and closed loop thermal is controlled.In conjunction with shown in Figure 11,28, one-way cock, 29, the temperature that records of temperature sensor 1(is Tt), 30, the temperature that records of temperature sensor 2(is Ti), 31, the temperature that records of temperature sensor 3(is To), 32, the manual cycle pump controller, 33, the automatic/hand change-over switch, side at ultrasound waveguide housing (or title " wave-guide cavity wave ") is provided with the cooling medium entrance in position on the upper side, and wave-guide cavity wave side position on the lower side is provided with the cooling medium outlet.Cooling medium (being also waveguide medium simultaneously) is degassed water, and mobilization dynamic is water circulating pump.Degassed water flows into wave-guide cavity wave from porch, is heated in wave-guide cavity wave, and from exit, flows out., at three the position set temperature sensors in the ultrasound waveguide wall outside, be respectively: porch, exit, ultrasonic transducer sidewall.The measurement numerical value of three temperature sensors is respectively Ti, To, Tt.Setting ultrasound waveguide operating temperature interval is (Tl, Th), and for example Tl is set as 30 degrees centigrade, and Th is set as 35 degrees centigrade, should keep ultrasound waveguide in this temperature range.
When after device start, the To initial temperature did not reach Tl, temperature controller did not start circulating pump, until the To temperature while surpassing Tl, starts circulating pump.
During circulating pump work, by the output of PWM mode controlled circulation pump, thus the flow velocity of adjusting degassed water.Temperature controller obtains pump operated amount according to the temperature data of temperature sensor collection through computing, according to the output of pump operated amount regulation and control circulating pump.Pump operated amount and each collecting temperature meet relation: Tp=G (Ti, To).In formula:
Tp: pump operated amount represents the ratio of pump power output and peak power output.Numerical range 0～1,0 representative is shut down, and 1 represents maximum power output.
G: temperature is controlled transfer function, represents the closed loop control relation of ultrasound waveguide temperature Ti, To and pump operated amount., for different working condition,, such as dissimilar ultrasonic transducer, ultrasound waveguide, circulating pump etc., adopt different transfer function G.Transfer function G makes temperature value To always remain in temperature range (Tl, Th).
Setting ultrasonic transducer allowable temperature upper limit Tm is 60 degrees centigrade, as Tt〉during Tm, temperature controller is forced Tp=1, cuts off output and the warning of ultrasonic power amplifier.
Need in some cases to carry out the manual adjustments flow velocity.For realizing this function, add the circuit of manual controlled circulation pump, can change into and use manual cycle pump controller controlled circulation pump by the automatic/hand change-over switch, thus the manual adjustments flow velocity.
The duty of circulating pump and depassing unit interlock.When circulating pump was worked, depassing unit was also worked, thereby guaranteed in wave-guide cavity wave not bubbles.Defecator is used for the impurity of filter pipeline.One-way cock is for guaranteeing when the circulation air pump inoperative, and reverse flow does not occur the cooling medium in pipeline.
Claims (10)
1. ultrasound waveguide with cooling system, it is characterized in that: comprise ultrasound waveguide housing (2) and ultrasonic transducer (1), the top of described ultrasound waveguide housing (2) is provided with opening, described ultrasonic transducer (1) is connected with ultrasound waveguide housing (2) by described opening, and the sidewall of described ultrasound waveguide housing (2) is provided with cooling medium entrance (5) and cooling medium outlet (6).
2. according to claim 1 with the ultrasound waveguide of cooling system, it is characterized in that: also comprise cooling medium source (8) and cooling medium collecting pit (13), described cooling medium source (8) is connected 13 with the cooling medium collecting pit) connect cooling medium entrance (5) and cooling medium outlet (6) by pipeline respectively.
3. according to claim 2 with the ultrasound waveguide of cooling system, it is characterized in that: be provided with depassing unit (11) and defecator (10) on the pipeline that connects described cooling medium source (8) and cooling medium entrance (5), be provided with one-way pump (12) on the pipeline that connects described cooling medium outlet (6) and cooling medium collecting pit (13).
4. according to claim 1 with the ultrasound waveguide of cooling system, it is characterized in that: also comprise waveguide medium pond (14) and radiator (16), described waveguide medium pond (14) connects cooling medium entrance (5) by the first pipeline, described cooling medium outlet (6) connects waveguide medium pond (14) by the second pipeline, and described the second pipeline is provided with radiator (16).
5., according to claim 4 with the ultrasound waveguide of cooling system, it is characterized in that: be provided with depassing unit (11) and defecator (10) on described the first pipeline, be provided with circulating pump (15) on described the second pipeline.
6. according to claim 5 with the ultrasound waveguide of cooling system, it is characterized in that: also comprise temperature sensor (29,30,31) and temperature controller (21), described temperature sensor is arranged on ultrasound waveguide housing (2), described temperature sensor is connected to temperature controller (21), and temperature controller is connected to circulating pump (15).
7., according to claim 6 with the ultrasound waveguide of cooling system, it is characterized in that: described temperature sensor is arranged on cooling medium entrance (5) and cooling medium outlet (6) is located.
8., according to claim 6 with the ultrasound waveguide of cooling system, it is characterized in that: described temperature sensor also is arranged on the sidewall of ultrasonic transducer (1).
9. according to claim 6 with the ultrasound waveguide of cooling system, it is characterized in that: also comprise automatic/hand change-over switch (33) and manual cycle pump controller (32), described automatic/hand change-over switch (33) is connected between temperature controller (21) and circulating pump (15), and described automatic/hand change-over switch (33) also connects manual cycle pump controller (32).
10. the described ultrasound waveguide with cooling system of according to claim 1 to 9 any one, it is characterized in that: also comprise waveguide cap (4), described waveguide cap (4) is arranged on the bottom of ultrasound waveguide housing (2).
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| CN108261611A (en) * | 2016-12-30 | 2018-07-10 | 重庆融海超声医学工程研究中心有限公司 | It is a kind of to treat wave beam injection device |
| CN108261611B (en) * | 2016-12-30 | 2024-03-15 | 重庆融海超声医学工程研究中心有限公司 | Therapeutic beam-emitting device |
| CN108808193A (en) * | 2018-07-03 | 2018-11-13 | 安徽帮创智能科技有限公司 | A kind of adjustable attenuator |
| CN108923106A (en) * | 2018-07-03 | 2018-11-30 | 安徽帮创智能科技有限公司 | A kind of heat radiating type attenuator |
| CN113418826A (en) * | 2021-06-21 | 2021-09-21 | 西安科技大学 | Constant-temperature multi-frequency ultrasonic excitation coal adsorption and desorption methane experimental device |
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