Summary of the invention
Technical problem to be solved by this invention is the above-mentioned deficiency that exists to apparatus for ultrasonic therapeutic treatment in the prior art, a kind of ultrasonic generator of simple in structure, position that can flexible ultrasonic source focus point is provided and contains the supersonic therapeutic system of this ultrasonic generator.
Solving the technical scheme that technical problem of the present invention adopted is that this ultrasonic generator comprises ultrasonic source and coupling device; Be filled with first coupled fluid in the said coupling device; Ultrasonic source is located in the said coupling device, wherein, also includes the focus adjustment unit on ultrasonic wave propagation path; Said focus adjustment unit places in the coupling device, and focus adjustment unit can be regulated the position of the focus point of ultrasonic source institute ultrasonic waves transmitted.
The ultrasound wave that ultrasonic generator of the present invention sent is in the process of propagating; Through this external device (ED) that is independent of the ultrasonic source setting of regulon of focusing to change hyperacoustic direction of propagation; Thereby make the ultrasound wave can enterprising line convergence, to regulate the degree of depth of focus ultrasonic point in different positions.Adopt the focus adjustment unit of this mode need not change the character of ultrasonic source self, only simply regulate, just can reach the purpose that changes the ultrasonic source focus point degree of depth through the focusing regulon.Several kinds of forms below preferred focus adjustment unit can adopt:
Said focus adjustment unit can comprise one or more liquid capsules; Each liquid capsule all is positioned at coupling device; On ultrasonic wave propagation path, set gradually or comprise successively; All be filled with coupled fluid in said each liquid capsule, the coupled fluid in first coupled fluid and said each liquid capsule is isolated each other and respectively have the different velocities of sound, and ultrasonic source institute ultrasonic waves transmitted is successively through focusing on behind the coupled fluid in first coupled fluid and above-mentioned each liquid capsule.
Because each liquid capsule is located at respectively on the ultrasound emission path; The coupled fluid that the different velocities of sound are arranged in each liquid capsule; On hyperacoustic propagation path, just applied two or more different entrant sound medium like this; Because the speed in different entrant sound media, propagated of ultrasound wave is different, certain refraction can take place in it in the process that is propagated into another kind of medium by a kind of medium, through selecting the combination of different two kinds or above entrant sound media for use; Just can realize ultransonic repeatedly refraction, control and change the depth of focus of ultrasonic source with this.
Preferably, be connected with first feed tube and first drain pipe on the said coupling device, also be connected with corresponding feed tube and drain pipe respectively on above-mentioned one or more liquid capsules.Coupled fluid constantly gets into the liquid capsule from each feed tube; Again from each drain pipe effluent capsule; Being provided with of feed tube and drain pipe can guarantee flowing of coupled fluid like this, thereby the heat that ultrasonic source produces is in the course of the work taken away, to avoid damaging ultrasonic source.
When adopting the focus adjustment unit of above-mentioned form; Ultrasonic source can adopt spherical shell formula ultrasonic source; The ultrasonic source that also can adopt plane formula ultrasonic source and acoustic lens to be combined to form, wherein acoustic lens is close on the surface of emission of plane formula ultrasonic source.
Preferably, said ultrasonic source can adopt a plurality of, and a plurality of ultrasonic sources are installed in respectively on the base, and base adopts and can make a plurality of ultrasonic source institute ultrasonic waves transmitted that is mounted thereon converge at the shape of a bit.
Another kind is, focus adjustment unit can comprise one or more acoustic lens that can change the transonic direction of being located on the ultrasonic wave propagation path, if adopt a plurality of acoustic lens, each acoustic lens is located on the ultrasonic wave propagation path successively.
Preferably, also comprise in the said focus adjustment unit with ultrasonic wave propagation path on the telecontrol equipment that links to each other of acoustic lens, telecontrol equipment can drive acoustic lens and between ultrasonic source and focus ultrasonic point, move.Like this, behind the position change of acoustic lens, hyperacoustic propagation path changes thereupon, and the position of hyperacoustic focus point also changes.
Further preferably, said telecontrol equipment can drive acoustic lens and get into or withdraw from ultrasonic wave propagation path, is detachable the connection between telecontrol equipment and the acoustic lens, in time changes different acoustic lens with convenient.The doctor just can use different acoustic lens instead at any time according to the treatment needs like this, to realize the focusing on the different depth more easily.
When adopting above-mentioned focus adjustment unit, ultrasonic source can adopt spherical shell formula ultrasonic source or plane formula ultrasonic source.Preferably, said ultrasonic source adopts a plurality of, and a plurality of ultrasonic sources are installed in respectively on the base, and the shape of base can make a plurality of ultrasonic source institute ultrasonic waves transmitted focus that is mounted thereon in a bit.
The third is; Said focus adjustment unit can comprise the sound passing membrane of being processed by flexible acoustic window material that seals on the installed surface that a flexible material processes, the said installed surface; Ultrasonic source is located on the said installed surface; Sound passing membrane is located on the ultrasonic wave propagation path, is filled with coupled fluid in the closed space that said installed surface and said sound passing membrane constituted, and the flexibility of sound passing membrane is less than the flexibility of said installed surface.This installed surface can power use generation deformation, position and direction that the deformation of installed surface drives ultrasonic source change, and therefore cause the depth of focus of ultrasonic source to change.
Preferably, be connected with first feed tube and first drain pipe on the said coupling device, the seam of installed surface and sound passing membrane is connected with second feed tube and second drain pipe respectively.When in the closed space that installed surface and sound passing membrane constituted, injecting or discharge coupled fluid, stressed the deforming of this installed surface and drop or rise, thus change the depth of focus of ultrasonic source.
Further preferably, also be respectively equipped with flow regulator on said second feed tube and said second drain pipe, be used to control the flow that gets into the coupled fluid in the closed space that installed surface and sound passing membrane constituted.
When adopting the focus adjustment unit of the above-mentioned type; Said ultrasonic source adopts spherical shell formula ultrasonic source; The ultrasonic source that perhaps adopts plane formula ultrasonic source and acoustic lens to be combined to form, wherein acoustic lens is close on the surface of emission of plane formula ultrasonic source.
Preferred said ultrasonic source can adopt a plurality of, and a plurality of ultrasonic sources are installed in respectively on the said installed surface.
The 4th kind is; Said ultrasonic source is processed by flexible material; Said focus adjustment unit can comprise the sound passing membrane of being processed by flexible acoustic window material that is sealed on the flexible ultrasonic wave-wave source; Sound passing membrane is located on the ultrasonic wave propagation path, is filled with coupled fluid in the closed space that said flexible ultrasonic wave-wave source and said sound passing membrane are constituted, and the flexibility of said sound passing membrane is less than the flexibility of said ultrasonic source.The ultrasonic source that this flexible material is processed can power use generation deformation, and the deformation in flexible ultrasonic wave-wave source can cause self depth of focus to change.
Preferably, be connected with first feed tube and first drain pipe on the said coupling device, flexible ultrasonic wave-wave source and sound passing membrane seam are connected with second feed tube and second drain pipe respectively.When in the closed space that this flexible ultrasonic wave-wave source and sound passing membrane are constituted, injecting or discharging coupled fluid, this stressed deforming in flexible ultrasonic wave-wave source and drop or rise, thus cause self depth of focus to change.
Further preferably, be respectively equipped with flow regulator on said second feed tube and said second drain pipe, be used to control the flow that gets into the interior coupled fluid of closed space that flexible ultrasonic wave-wave source and sound passing membrane constituted.
Among the present invention, also can above-mentioned four types focus adjustment unit be made up use each other, thereby form a kind of new focus adjustment unit.
A kind of supersonic therapeutic system, ultrasonic generator wherein adopts the ultrasonic generator of the above-mentioned type.
The present invention carries out simple mechanical adjustment through the outside at ultrasonic source; Utilize the physical features of ultrasonic propagation to change the depth of focus of ultrasonic source; And do not influence or change the character and the structure of ultrasonic sound source self; And it is simple in structure, can be effectively, free, regulate the depth of focus of one or more ultrasonic sound sources easily.Be specially adapted to adopt the ultrasound source of single transducer.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
Among the present invention; Ultrasonic generator comprises ultrasonic source and coupling device; Be filled with first coupled fluid in the coupling device, ultrasonic source is located in the said coupling device, also includes the focus adjustment unit on ultrasonic wave propagation path; Said focus adjustment unit is located in the coupling device, and focus adjustment unit can be regulated the position of the focus point of ultrasonic source institute ultrasonic waves transmitted.Said ultrasonic source itself is launched be concentration ultrasonic or with other acoustic element combination after can produce the effect that focuses on, perhaps can produce the effect of focusing after the process focus adjustment unit.
Following embodiment is indefiniteness embodiment of the present invention.
Embodiment 1:
Shown in Figure 1 is the structure principle chart that existing ultrasonic generator focuses on, and Fig. 2 and Fig. 3 are the structural representation of the embodiment of the invention 1.
Like Fig. 2, shown in 3, in the present embodiment, what ultrasonic source used is spherical shell formula ultrasonic source 31.Said spherical shell formula ultrasonic source 31 places in the coupling device 71, and the inside of coupling device 71 is filled with first coupled fluid 81.
Said focus adjustment unit is the liquid capsule of being located on the ultrasonic wave propagation path 72, and liquid capsule 72 is processed by acoustic window material, and it is arranged in first coupled fluid 81 of coupling device 71, and liquid capsule 72 inside are filled with second coupled fluid 82.The coupling device 71 first inner coupled fluids 81 completely cut off with the liquid capsule 72 second inner coupled fluids 82 each other.
On the outer wall of coupling device 71, be provided with first feed tube 51 and first drain pipe 61; On the liquid cyst wall of liquid capsule 72, be provided with second feed tube 52 and second drain pipe 62; Be provided with like this and can guarantee first coupled fluid 81 constantly flowing in coupling device 71; Second coupled fluid 82 constantly flowing in liquid capsule 72, flowing of coupled fluid can be taken away the heat that ultrasonic source produces in the course of the work, to avoid damaging ultrasonic source.
First coupled fluid 81 adopts the coupled fluid medium with different velocities of sound with second coupled fluid 82; In the present embodiment; First coupled fluid 81 adopts different normal saline of acoustic impedance value and de aerated water (under 37 ℃ of environment) respectively with second coupled fluid 82, then makes the focal length elongated (as shown in Figure 2) when only using normal saline of ultrasonic source; When first coupled fluid 81 and second coupled fluid 82 adopt different de aerated water of acoustic impedance value and normal saline (under 37 ℃ of environment) respectively, then make the focal length of ultrasonic source shorten when only using de aerated water (as shown in Figure 3).During use; Because the couplant of first coupled fluid 81 and the different velocities of sound of second coupled fluid, 82 employings; Ultrasound wave can reflect when first coupled fluid 81 and 82 propagation of second coupled fluid, and the direction of its former propagation is changed; But ultrasound wave still can converge at a bit after through liquid capsule 72; Just change has taken place in the position of ultrasound wave focus point, and focus point is focused on by 2 places, position that the position among original Fig. 11 becomes in Fig. 2 or Fig. 3, the particular location after its focus point changes can according in the ultrasonic propagation process the propagation distance and the acoustic impedance thereof of various couplants of process calculate.
The difference of Fig. 2 and Fig. 3 is that second coupled fluid 82 in the liquid capsule 72 is inequality; Be respectively to utilize two kinds of coupled fluids to change hyperacoustic propagation path, thereby make hyperacoustic focal position become near or become far away with respect to the focal position 1 of Fig. 1 (when only using a kind of coupled fluid) with different velocities of sound.So just make and can realize the change of the ultrasound wave focus point degree of depth through selecting two kinds of different coupling fluids simply for use.
Similarly, the focus adjustment unit in the present embodiment can also adopt a plurality of liquid capsules of being located on the ultrasonic wave propagation path, and each liquid capsule all is positioned at coupling device, on ultrasonic wave propagation path, sets gradually, and also can comprise successively.All be filled with coupled fluid in said each liquid capsule; First coupled fluid 81 is isolated each other with the coupled fluid in said each liquid capsule and respectively have the different velocities of sound, and ultrasonic source institute ultrasonic waves transmitted is successively through focusing on behind the coupled fluid in first coupled fluid 81 and above-mentioned each liquid capsule again.So just can realize repeatedly changing the transonic path, thereby reach the purpose that changes the accumulation degree of depth.
Embodiment 2:
Fig. 4 is the structural representation of the embodiment of the invention 2.
As shown in Figure 4; What ultrasonic source used in the present embodiment is the combination of plane formula ultrasonic source 32 and acoustic lens 4; Acoustic lens 4 is close on the surface of emission of the ultrasonic sound source 32 of plane formula, so that the ultrasound wave that is sent by plane formula ultrasonic source 32 can be realized focusing on.
Compare with embodiment 1, present embodiment is except the combination that the spherical shell formula ultrasonic source 31 among the embodiment 1 is changed into plane formula ultrasonic source 32 and acoustic lens 4, and remainder is identical with embodiment 1.
Embodiment 3:
Fig. 5 is the structural representation of the embodiment of the invention 3.
As shown in Figure 5, present embodiment has used a plurality of ultrasonic sources 3, and ultrasonic source 3 can use spherical shell formula ultrasonic source, also can use the combination of plane formula ultrasonic source and acoustic lens to realize.All ultrasonic sources 3 all are installed on the base 10, and the shape of base 10 can be so that 3 ultrasonic waves transmitted of a plurality of ultrasonic sources that are mounted thereon can focus on a bit, and each ultrasonic source ultrasonic waves transmitted propagation path is shown in figure.
Compare with embodiment 1, present embodiment adds the base 10 except changing the spherical shell formula ultrasonic source 31 among the embodiment 1 into a plurality of ultrasonic sources 3, and remainder is identical with embodiment 1.
Embodiment 4:
Like Fig. 6 and shown in Figure 7, be the structural representation of the embodiment of the invention 4.
Like Fig. 6, shown in 7, in the present embodiment, ultrasonic source has used spherical shell formula ultrasonic source 31.Said focus adjustment unit is to be located at the acoustic lens 41 of the changed ultrasonic propagation direction on the ultrasonic wave propagation path.Fig. 6 and Fig. 7 are respectively the effect that changes focal depth when adopting two kinds of acoustic lens of different nature, and acoustic lens 4 can adopt the acoustic lens that plays converging action among Fig. 6, also can adopt the acoustic lens that plays disperse function among Fig. 7.
In the present embodiment, spherical shell formula ultrasonic source 31 all is located at coupling device 71 inside with acoustic lens 41, is filled with first coupled fluid 81 in the said coupling device 71.On coupling device 71, also can be provided with first feed tube 51 and first drain pipe, 61 (not shown)s.
Acoustic lens 41 is connected on the mechanical movement means 9, and mechanical movement means 9 can drive acoustic lens 41 and on ultrasonic wave propagation path, move.During 42 places, position after acoustic lens 41 original positions move to adjusting, hyperacoustic propagation path also changes thereupon, and focus point changes to 2 places, position by position 1.
It should be noted that; There is not mechanical movement means 9 if in the present embodiment acoustic lens 41 only is set; Also can only after using mechanical movement means 9, can make shifting gears of focus more more flexible so that the position of focus does not change before acoustic lens is set.
Similarly, the acoustic lens 41 in the present embodiment focus adjustment unit is not limited to one, can adopt a plurality of acoustic lens, and the type of each acoustic lens can be acoustic lens of different nature.If adopt a plurality of acoustic lens, each acoustic lens is located on the ultrasonic wave propagation path successively.
Preferably; Mechanical movement means 9 in the present embodiment is except having the function that can move acoustic lens; Mechanical movement means 9 also can drive acoustic lens and get into or withdraw from ultrasonic wave propagation path; Being connected to detachable connection the between mechanical movement means 9 and the acoustic lens 41, it just has the function of changing acoustic lens like this, can change the acoustic lens that is positioned on the transonic path; So that in the process of treatment, acoustic lens 41 is changed or moved, thereby realize the focusing on the different depth more easily according to different treatment needs.
Embodiment 5:
Fig. 8 is the structural representation of the embodiment of the invention 5.
As shown in Figure 8, what ultrasonic source used in the present embodiment is plane formula ultrasonic source 32, and when adopting this wave source, acoustic lens must have focusing function, could make can be focused on a bit by plane formula ultrasonic source institute ultrasonic waves transmitted.
Compare with embodiment 4, present embodiment is except changing the spherical shell formula ultrasonic source 31 among the embodiment 4 the plane formula ultrasonic source 32 into, and remainder is identical with embodiment 4.
Similarly, the ultrasonic source in the present embodiment also can not only be selected one for use, can be the various combination of a plurality of spherical shell formula ultrasonic sources or plane formula ultrasonic source.
Embodiment 6:
Fig. 9 is the structural representation of the embodiment of the invention 6.
As shown in Figure 9, in the present embodiment, said ultrasonic source 13 is processed (as adopting piezo-electricity composite material or piezoelectric membrane) by flexible material.Said focus adjustment unit comprises the sound passing membrane of being processed by flexible acoustic window material 73 that is sealed on the flexible ultrasonic wave-wave source 13; Sound passing membrane 73 is located on the ultrasonic wave propagation path; Be filled with coupled fluid 8 in the closed space that said flexible ultrasonic wave-wave source 13 and said sound passing membrane 73 are constituted, the flexibility of said sound passing membrane 73 is less than the flexibility in said flexible ultrasonic wave-wave source 13.
The inside of coupling device 71 is full of coupled fluid 8; Flexible ultrasonic wave-wave source 13 is positioned in the coupled fluid 8 in the coupling device 71; Be connected with first feed tube 51 and first drain pipe 61 on the outer wall of coupling device 71, flexible ultrasonic wave-wave source 13 is connected with second feed tube 52 and second drain pipe 62 respectively with the seam of sound passing membrane 73.In the present embodiment, identical coupled fluid is adopted with the interior coupled fluid of the closed space that said sound passing membrane 73 is constituted in coupled fluid in the coupling device 71 and flexible ultrasonic wave-wave source 13.
On second feed tube 52 and second drain pipe 62 flow regulator is housed respectively also, in the present embodiment.Flow regulator adopts valve 15.
When injecting coupled fluid 8 in 73 seal cavities that constitute with flexible ultrasonic wave-wave source 13 from second feed tube 52 toward sound passing membrane; Sound passing membrane 73 receives fluidic pressure with flexible ultrasonic wave-wave source 13, and deformation to a certain degree all can take place, and its deformation direction is shown in the direction of arrow among Fig. 9.Because the flexibility in flexible ultrasonic wave-wave source 13 is greater than sound passing membrane 73, the deformation ratio sound passing membrane 73 in flexible ultrasonic wave-wave source 13 is bigger.The position and the shape in flexible ultrasonic wave-wave source 13 change, and to the position 14, the position of sound passing membrane 73 also changes to position 74 by the change in location shown in Fig. 9.The shape in flexible ultrasonic wave-wave source 13 changes, and corresponding change also takes place in its focus point position, focuses on focus and 1 changes to position 2 from the position thereby make.Through utilizing two valves 15 on second feed tube 52 and second drain pipe 62 to control to be injected into the amount of the coupled fluid 8 in the closed space that flexible ultrasonic wave-wave source 13 and sound passing membrane 73 constituted; Just can control the deformation degree in flexible ultrasonic wave-wave source 13, also just realize control flexible ultrasonic wave-wave source 13 depths of focus.
Ultrasonic source 13 in the present embodiment also can be directly under the effect of power (and not necessarily need through second feed tube 52 and second drain pipe 62) deformation takes place makes flexible ultrasonic wave-wave source 13 that deformation take place; Thereby the position of ultrasonic source 13 and direction are changed, therefore cause the depth of focus of ultrasonic source to change.
Similarly; Coupled fluid in the coupling device 71 and flexible ultrasonic wave-wave source 13 also can be velocity of sound different fluids with the interior coupled fluid of seal cavity that the closed space that said sound passing membrane 73 is constituted forms; This moment, ultrasound wave can be similar to the refraction of embodiment 1 on the contact surface of two kinds of coupled fluids, was the equal of being used in combination of the embodiment of the invention 1 and present embodiment.
Embodiment 7:
Shown in figure 10, be the structural representation of the embodiment of the invention 7, Figure 11 is the vertical view of Figure 10.
Shown in figure 10, in the present embodiment, focus adjustment unit comprises the sound passing membrane of being processed by flexible acoustic window material 73 of sealing on installed surface 11 that a flexible material processes, the said installed surface 11.Sound passing membrane 73 is located on the ultrasonic wave propagation path, is filled with coupled fluid 8 in the closed space that said installed surface 11 and said sound passing membrane 73 are constituted, and the flexibility of sound passing membrane 73 is less than the flexibility of said installed surface 11.
Said focus adjustment unit is positioned in the coupling device 71; Be full of coupled fluid 8 in the coupling device 71; Be connected with first feed tube 51 and first drain pipe 61 on the outer wall of coupling device 71, installed surface 11 is connected with second feed tube 52 and second drain pipe 62 respectively with the seam of sound passing membrane 73.Ultrasonic source 3 is fixed on the installed surface 11.
On second feed tube 52 and second drain pipe 62 flow regulator is housed respectively, is used to control the coupled fluid amount of injection, in the present embodiment, flow regulator adopts valve 15.
Used a plurality of ultrasonic sources in the present embodiment, ultrasonic source can use spherical shell formula ultrasonic source, also can use the combination of plane formula ultrasonic source and acoustic lens.
When injecting coupled fluid 8 in 73 seal cavities that constituted with installed surface 11 from second feed tube 52 toward sound passing membrane, sound passing membrane 73 receives fluidic pressure with installed surface 11, and deformation to a certain degree all can take place, shown in the direction of arrow among Figure 10.Because the flexibility of installed surface 11 is greater than sound passing membrane 73, so the deformation ratio sound passing membrane 7 of installed surface 11 is bigger.The position and the shape of sound passing membrane 73 change; By the change in location shown in the figure to the position 74; The position and the shape of installed surface also change, and to the position 12, the position and the transmit direction of a plurality of ultrasonic sources of installation also just change with the deformation of installed surface 11 on it by the change in location shown in the figure; The focus point position changes thereupon, and the focal position changes to 2 places, position by position 1.Like this, utilize two valves 15 on second feed tube 52 and second drain pipe 62 to control the amount of the coupled fluid 8 of injection, just can control the deformation degree of installed surface 11, also just realized control a plurality of ultrasonic source depths of focus.
Similarly; Coupled fluid in the coupling device 71 and installed surface 11 also can be velocity of sound different fluids with the interior coupled fluid of seal cavity that the closed space that said sound passing membrane 73 is constituted forms; This moment, ultrasound wave can be similar to the refraction of embodiment 1 on the contact surface of two kinds of coupled fluids, was the equal of being used in combination of the embodiment of the invention 1 and present embodiment.