CN209060387U - Ultrasonic transducer, focusing ultrasonic therapeutic apparatus - Google Patents
Ultrasonic transducer, focusing ultrasonic therapeutic apparatus Download PDFInfo
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- CN209060387U CN209060387U CN201820101284.7U CN201820101284U CN209060387U CN 209060387 U CN209060387 U CN 209060387U CN 201820101284 U CN201820101284 U CN 201820101284U CN 209060387 U CN209060387 U CN 209060387U
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Abstract
The utility model provides a kind of ultrasonic transducer, focusing ultrasonic therapeutic apparatus, belongs to high intensity focused ultrasound technical field, can solve the problems, such as that existing ultrasonic transducer focal regions size is big, shape is in " cigar type ".The ultrasonic transducer includes phonation unit and sounding face, phonation unit is for generating ultrasonic wave, sounding face be with the first notch, the second notch, third notch spherical surface, wherein, one centre of sphere face of the corresponding spherical surface of sounding face is main centre of sphere face, first notch and the second notch are located at two intersections of diameter and spherical surface perpendicular to cue ball heart face, and third notch connects the first notch and the second notch；In the range of distinguishing certain distance apart from cue ball heart face two sides, sounding face is that arc-shaped, arc-shaped opening corresponds to third notch in the section parallel with cue ball heart face, and arc-shaped central angle is greater than 180 degree and less than 360 degree；Sounding face energy reflectance ultrasound, and the focusing ultrasonic wave that phonation unit generates is in the corresponding centre of sphere of sounding face.
Description
Technical field
The utility model belongs to high intensity focused ultrasound technical field, and in particular to a kind of ultrasonic transducer focuses ultrasound
Therapeutic equipment.
Background technique
High intensity focused ultrasound (High Intensity Focused Ultrasound, HIFU) technology is in medical treatment, section
Grind, the fields such as material processing are applied widely, using ultrasound can focusing and penetrability, make ultrasound in specific position
It focuses, and utilizes high energy therapeutic disease, provocative reaction, the change material properties etc. at focal regions.For example, high intensity focused ultrasound
Technology clinically has been used for treatment liver cancer, breast cancer, kidney, bone tumour, the innocent and malignant tumours such as fibroid, principle be by
The lesion of focus ultrasonic into the human body makes the high-energy density mechanical energy of focal regions be converted to thermal energy, makes pathological tissues coagulability
Downright bad (also known as ultrasound thermal ablation)；Simultaneously as the ultrasonic energy density on sound channel is lower, therefore it can guarantee pathological tissues week
Enclose that the normal tissue on harmony channel is unaffected or the influence that is subject to is acceptable.
Ultrasonic transducer is the core component of high intensity focused ultrasound technology, is used to convert electrical energy into mechanical energy, and
Emit ultrasound along normal direction everywhere from sounding face, so that the focus ultrasonic issued.The sounding of existing focused transducer
Face is mostly spherical crown surface, and the ultrasound issued is traveling wave, and is focused near the centre of sphere of spherical crown.It is therefore existing due to the characteristic of ultrasound
The focal regions of ultrasonic transducer are practical to be similar to cigar shape or spindle, and the length in acoustic axis direction is larger, generally more than 10mm,
And in the size of other two short axles then 2~3mm (for when supersonic frequency is 1MHz).
The focal regions range of existing ultrasonic transducer is larger, and energy is not enough concentrated, and energy density is lower at focal regions, and acoustic pressure is most
It is only capable of reaching 107Pa magnitude, thus cause its cannot ablation lesion tissue rapidly, treatment time is long, and therapeutic effect is bad.
In addition, there are the heterogene structures such as a large amount of bones, gassiness internal organs, fat in human body, they can change existing ultrasound
Can the ultrasound that issues of device cause serious scattering, reflection, it is in serious non-linear etc. for making super sonic propagation, and then generates focal regions
Uncertain offset, distortion influence the safety for the treatment of.
Utility model content
The utility model at least partly solves that existing ultrasonic transducer focal regions size is big, shape is asked in " cigar type "
Topic, provide it is a kind of can the small sized spherical focal regions of shape ultrasonic transducer, focusing ultrasonic therapeutic apparatus.
Solving technical solution used by the utility model technical problem is a kind of ultrasonic transducer, including phonation unit and
Sounding face, the phonation unit is for generating ultrasonic wave, and the sounding face is to lack with the first notch, the second notch, third
Mouthful spherical surface, wherein a centre of sphere face of the corresponding spherical surface of the sounding face is main centre of sphere face, and first notch and second lack
Mouth is located at two intersections of diameter and spherical surface perpendicular to cue ball heart face, and the third notch connects the first notch and the
Two notches；
In the range of distinguishing certain distance apart from cue ball heart face two sides, the sounding face is cut in parallel with cue ball heart face
Be in face it is arc-shaped, the arc-shaped opening corresponds to third notch, and the arc-shaped corresponding central angle is greater than 180 degree and small
In 360 degree；
The sounding face has the ability of reflectance ultrasound, and the focusing ultrasonic wave that the phonation unit generates is in sounding face pair
The centre of sphere answered.
Preferably, the edge of first notch and the second notch is located in the first plane and the second plane.
It may further be preferable that first plane and the second plane are each parallel to cue ball heart face.
It may further be preferable that first plane is at a distance from the second interplanar in 80~1000mm.
It may further be preferable that first plane is at a distance from the second interplanar in 150~500mm.
It may further be preferable that first plane between cue ball heart face at a distance from be equal to second plane and the cue ball heart
Distance between face.
Preferably, the sounding face is arc-shaped in the section for being arbitrarily parallel to cue ball heart face, described arc-shaped
Corresponding central angle is greater than 180 degree and less than 360 degree.
It may further be preferable that arc-shaped opening court of the sounding face in the section for being arbitrarily parallel to cue ball heart face
To identical.
It may further be preferable that arc-shaped corresponding circle of the sounding face in the section for being arbitrarily parallel to cue ball heart face
Heart angle is equal.
Preferably, apart from cue ball heart face two sides distinguish certain distance in the range of, the sounding face with the cue ball heart
Arc-shaped corresponding central angle in the parallel section in face is greater than 180 degree and less than 300 degree.
It may further be preferable that apart from cue ball heart face two sides distinguish certain distance in the range of, the sounding face with
Arc-shaped corresponding central angle in the parallel section in cue ball heart face is greater than 200 degree and less than 280 degree.
Preferably, the range apart from cue ball heart face two sides difference certain distance is away from cue ball heart face two sides difference 40
The range of~500mm.
Preferably, the diameter of the corresponding spherical surface of the sounding face is in 100~3000mm.
It may further be preferable that the diameter of the corresponding spherical surface of the sounding face is in 200~2000mm.
Preferably, the sounding face is symmetrical arranged relative to cue ball heart face.
Solving technical solution used by the utility model technical problem is a kind of focusing ultrasonic therapeutic apparatus comprising:
Above-mentioned ultrasonic transducer.
In the ultrasonic transducer of the utility model, sounding face has the ability of reflectance ultrasound, and its corresponding central angle is super
180 degree out, therefore the ultrasound that sounding face portion issues can be reflected by the sounding face on opposite, to make to surpass in the area
Sound forms standing wave, and the ultrasound that sounding face other parts issue will not be reflected, and be still traveling wave.
Through this traveling wave by way of standing wave combines, the focal regions of ultrasound can be compressed on the direction of part, be made
It is become from cigar shape close to spherical regular shape, and size becomes smaller, so that the energy density at focal regions be made to improve, is improved
Therapeutic effect and efficiency reduce the damage of normal tissue；Meanwhile ultrasound can be also reduced in human body in heterogeneous structure
Scattering, reflection etc. reduce offset, the distortion of focal regions, are conducive to focal regions and are accurately positioned.
On the other hand, sounding face also has there are three notch, and Gu Renti, material to be processed, research equipment etc. can pass through these
Notch enters in sounding face and reaches near focal regions, convenient for the practical application of ultrasonic transducer.
The ultrasonic transducer of the utility model is preferred in focusing ultrasonic therapeutic apparatus, can be certainly also used to scientific research, material
In other fields such as material processing.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of ultrasonic transducer of the embodiments of the present invention；
Fig. 2 is the structural schematic diagram of sounding face in a kind of ultrasonic transducer of the embodiments of the present invention；
Fig. 3 is the direction that sounding face edge is parallel to cue ball heart face in a kind of ultrasonic transducer of the embodiments of the present invention
Structural schematic diagram；
Fig. 4 is sounding face in a kind of ultrasonic transducer of the embodiments of the present invention along the direction perpendicular to cue ball heart face
Structural schematic diagram；
Fig. 5 is sounding face in a kind of ultrasonic transducer of the embodiments of the present invention in the section for being parallel to cue ball heart face
In structural schematic diagram；
Fig. 6 is simulation sound field intensity distribution map of the sounding face of different central angles in X-axis；
Fig. 7 is simulation sound field intensity distribution map of the sounding face of different central angles in Y-axis；
Fig. 8 is simulation sound field intensity distribution map of the sounding face of different central angles on Z axis；
Fig. 9 is -6dB width figure of the simulation sound field of the sounding face of different central angles on each axis；
Figure 10 is the focal regions volume diagram of the corresponding -6dB width of sounding face of different central angles；
Figure 11 is the simulation sound field intensity distribution map along the different sounding face of Y-axis size in X-axis；
Figure 12 is the simulation sound field intensity distribution map along the different sounding face of Y-axis size in Y-axis；
Figure 13 is the simulation sound field intensity distribution map along the different sounding face of Y-axis size on Z axis；
- 6dB width figure of the Figure 14 for the simulation sound field along the different sounding face of Y-axis size on each axis；
Figure 15 is the focal regions volume diagram of the corresponding -6dB width of simulation sound field along the different sounding face of Y-axis size
Wherein, appended drawing reference are as follows: 1, shell；2, upper cover；3, sounding face；31, the first notch；32, the second notch；33,
Three notches；4, piezoelectricity array element；5, end cap；91, the first plane；92, the second plane；99, cue ball heart face.
Specific embodiment
It is with reference to the accompanying drawing and specific real to make those skilled in the art more fully understand the technical solution of the utility model
Mode is applied to be described in further detail the utility model.
Embodiment 1:
As shown in Fig. 1 to Figure 15, the present embodiment provides a kind of ultrasonic transducers comprising phonation unit and sounding face 3, hair
Sound unit is for generating ultrasonic wave.
Moreover, sounding face 3 be with the first notch 31, the second notch 32, third notch 33 spherical surface, wherein sounding face 3
One centre of sphere face of corresponding spherical surface is main centre of sphere face 99, and the first notch 31 and the second notch 32 are located at perpendicular to cue ball
The diameter in heart face 99 and two intersections of spherical surface, third notch 33 connect the first notch 31 and the second notch 32；
In the range of distinguishing certain distance apart from 99 two sides of cue ball heart face, sounding face 3 is parallel with cue ball heart face 99
It is that arc-shaped, arc-shaped opening corresponds to third notch 33 in section, arc-shaped corresponding central angle is greater than 180 degree and is less than
360 degree；
Sounding face 3 has the ability of reflectance ultrasound, and the focusing ultrasonic wave that phonation unit generates is in the corresponding ball of sounding face 3
The heart.
The ultrasonic transducer of the present embodiment has phonation unit, and phonation unit is the device that can produce ultrasound, for example piezoelectricity
Ceramics or 1-3 type piezo-electricity composite material etc..By designing shape, quantity, the position etc. of phonation unit, can make it equivalent to from hair
The each position in sound face 3 issues ultrasound, and the ultrasound issued in each position is passed along the normal direction of sounding face 3 in the position
It broadcasts, and these ultrasounds can finally focus (including directly focus or focus after reflection) in required position.
Specifically, as shown in Figure 1, sounding face 3 can be the entrant sound face with predetermined shape, and phonation unit (such as piezoelectricity battle array
4) member can be set to sounding face 3 after；Alternatively, sounding face 3 can also directly be exactly the surface of emission of phonation unit itself.
Specifically, different forms can also be used in phonation unit.For example, phonation unit can be set to sounding face 3 not to be multiple
With the piezoelectricity array element 4 (piezoelectric ceramic piece of such as rectangle) of position, i.e., multiple piezoelectricity array elements 4 " splicing " go out sounding face 3；Alternatively, hair
Sound unit is also directly with shape identical with sounding face 3 (for example special-shaped piezoelectric ceramic piece).
Certainly, shown in Fig. 1, sounding face 3 and phonation unit are removed in ultrasonic transducer, may also include the driving electricity of phonation unit
Other components such as the shell (shell 1, upper cover 2, lower cover, end cap 5 etc.) on road, closing driving circuit and phonation unit, herein no longer
Detailed description.
Different from the sounding face of traditional spherical crown surface formula, the sounding face 3 of the ultrasonic transducer of the present embodiment, which is equivalent to, to be lacked
The spherical surfaces of three parts.
As shown in Figures 2 to 4, two parts (the first notch 31 and the second notch 32) that the above sounding face 3 lacks are balls
Part of the face at one diametrically both ends, wherein the centre of sphere face vertical with the diameter face of the centre of sphere (i.e.) is main centre of sphere face
99.And the Part III (third notch 33) that sounding face 3 lacks then for from side by above first notch 31 and the second notch 32
The part connected.
That is, if using 99 place plane of cue ball heart face as horizontal direction, the above diameter perpendicular to cue ball heart face 99
Direction be that its top and bottom end in the vertical direction then to a spherical surface first respectively can be cut away a part by vertical direction, it
A part is cut away into its side again afterwards, and the part that the side is cut off should link up the notch of top and bottom end, then it is remaining
Spherical surface be the above sounding face 3.
Wherein, in the 99 each certain distance in two sides of cue ball heart face, (the above certain distance is preferably 40~500mm, and two sides
Distance can be different) in the range of, sounding face 3 cut in the section for being parallel to cue ball heart face 99 shape be it is arc-shaped, should
Arc-shaped corresponding central angle is greater than 180 degree and less than 360 degree, and opening then corresponds to the above third notch 33.That is, extremely
In few part range close to main center of circle face, spherical surface is only cut the part " less than half of ball " by the above third notch 33, and
The part that the sounding face 3 of reservation is then " more than half of ball ".
Further, the above sounding face 3 has the ability of reflectance ultrasound, therefore as shown in figure 5, exceeds 180 degree from central angle
The ultrasound that issues of circular arc portion can be reflected by the sounding face 3 on opposite, and should can also be reflected beyond circular arc portion of 180 degree
The ultrasound that the sounding face 3 on opposite emits is formed to can make ultrasonic return in partial region (drawing the part of oblique line in Fig. 5)
Standing wave changes the focus condition and focal shape of ultrasound；Meanwhile the ultrasound that circular arc part corresponding with opening issues is not anti-
It penetrates, therefore the ultrasound that this part of circular arc issues still is traveling wave.
That is, the ultrasound that the ultrasonic transducer of the present embodiment generates is really the form that traveling wave is combined with standing wave,
Thus its propagation, focusing etc. can change.Specifically, the ultrasonic transducer can be such that the long axis of former cigar shape focal regions presses
Contracting improves the energy density at focal regions so that focal regions be made to become smaller closer to spherical and size, improves therapeutic effect and effect
Rate reduces the damage of normal tissue.Meanwhile the ultrasonic transducer can also reduce ultrasound dissipating in heterogeneous structure in human body
It penetrates, reflect, reduce offset, the distortion of focal regions, conducive to the accurate positionin of focal regions.
On the other hand, sounding face 3 also has there are three notch, and Gu Renti, material to be processed, research equipment etc. can pass through these
Notch enters in sounding face 3 and reaches near focal regions, convenient for the practical application of ultrasonic transducer.
Preferably, the edge of the first notch 31 and the second notch 32 is located in the first plane 91 and the second plane 92.
It is furthermore preferred that the first plane 91 and the second plane 92 are each parallel to cue ball heart face 99.
As shown in figure 3, above first notch 31 and the second notch 32 are preferably the spherical crown clipped by plane, more preferably
The bottom surface of the spherical crown clipped by two parallel planes, i.e., two spherical crowns being truncated is preferably parallel to each other.First is removed as a result, to lack
Spherical surface after mouth 31 and the second notch 32 is equivalent to structure obtained from two table bottom surfaces docking.Certainly, the bottom of two billiard tables
Face is cue ball heart face 99, and the height of the two can be different.3 shape of sounding face and billiard table of the above form are close, comparison rule, knot
Structure is simple.
Certainly, if above first notch 31 and the second notch 32 are clipped by the plane being not parallel to each other, either
It is clipped by nonplanar curved surface, is also all feasible.
It is furthermore preferred that the first plane 91 between the second plane 92 at a distance from 80~1000mm, further preferably 150
~500mm.
That is, the first notch 31 between the second notch 32 at a distance from (i.e. the size of sounding face 3 in the vertical direction)
(the corresponding spherical diameter of certain sounding face 3 should be bigger than the above distance), such 3 area of sounding face are preferably in range above
Enough, it can produce suitable for practical ultrasound.
It is furthermore preferred that the first plane 91 between cue ball heart face 99 at a distance from be equal between the second plane 92 and cue ball heart face 99
Distance.
That is, the first notch 31 and the second notch 32 with equidistant two planes of the centre of sphere preferably by intercepting
, therefore they are equal sized and symmetrical.
Certainly, if the first notch 31 and the second notch 32 be different at a distance from the centre of sphere or shape fundamental difference, and
It is feasible.
Preferably, sounding face 3 is arc-shaped, arc-shaped corresponding circle in the section for being arbitrarily parallel to cue ball heart face 99
Heart angle is greater than 180 degree and less than 360 degree.
It is defined above at least near cue ball heart face 99, sounding face 3 is round in the section for being parallel to cue ball heart face 99
Arc, but mode more preferably, sounding face 3 can be the above corresponding circle in the section for being arbitrarily parallel to cue ball heart face 99
Heart angle is greater than 180 degree and arc-shaped less than 360 degree, stays to guarantee that sounding face 3 can produce in each position of vertical direction
Wave.
Certainly, if the portion of sounding face 3 is not arc-shaped (for example divide in the section for being parallel to cue ball heart face 99
The two sections of circular arcs opened) and it is feasible.
It is further preferred that arc-shaped opening direction of the sounding face 3 in the section for being arbitrarily parallel to cue ball heart face 99
It is identical；It is further preferred that arc-shaped corresponding central angle phase of the sounding face 3 in the section for being arbitrarily parallel to cue ball heart face 99
Deng.
That is, in the different location of vertical direction, the above third notch 33 be preferably directed towards it is identical, it is more preferably corresponding
Central angle is also identical, i.e., third notch 33 is preferably intercepted by the plane vertical with cue ball heart face 99.
As shown in figure 4, looking up from the side perpendicular to cue ball heart face 99, the above sounding face 3 is analogous to the shape of " C-shaped "
Shape, and " C-shaped " is somebody's turn to do with certain " thickness " on the direction perpendicular to cue ball heart face 99, and in the side perpendicular to cue ball heart face 99
To different location at " C-shaped " size it is different.
Preferably, apart from 99 two sides of cue ball heart face distinguish certain distance in the range of, sounding face 3 with cue ball heart face 99
Arc-shaped corresponding central angle in parallel section is greater than 180 degree and less than 300 degree, more preferably greater than 200 degree and is less than
280 degree.
As long as being examined although the above central angle is greater than 180 degree and can form standing wave less than 360 degree from practical angle
To consider, central angle is more preferably in range above, it can both form enough standing waves in this way, and third notch 31 is also sufficiently large,
Convenient for practical application.
Preferably, the diameter of the corresponding spherical surface of sounding face 3 is in 100~3000mm, more preferably in 200~2000mm.
When 3 shape of sounding face (not including size) is identical, the practical ruler of the more big then sounding face 3 of corresponding spherical diameter
It is very little bigger, so that the gross energy of ultrasonic transducer is bigger, the energy of focal regions when the ultrasonic energy of unit area transmitting is identical
Density is higher, and the spherical surface of dimensions above compares suitable for practical.
Preferably, sounding face 3 is symmetrical arranged relative to cue ball heart face 99.
As shown in figure 3, sounding face 3 is symmetrical preferably with respect to cue ball heart face 99, i.e. the sounding of 99 two sides of cue ball heart face
The form in face 3 is preferably identical, in this way, its sound field, focal regions for being formed be also it is symmetrical relative to cue ball heart face 99, it is more regular,
It is easily controllable.
The ultrasound issued below to different sounding faces 3 is simulated；Wherein, the first plane 91 of the sounding face 3 of simulation
It is parallel to each other with the second plane 92 and is equidistant to cue ball heart face 99, and it is in the section for being arbitrarily parallel to cue ball heart face 99
In be it is arc-shaped, each arc-shaped corresponding central angle is equal and towards identical.
When central angle is less than 180 degree, focal regions are in apparent ellipse in the face XOZ and the face YOZ, and with central angle
Though the long axis for increasing the ellipse has shortening, change is not obvious.This shows to form existing traveling wave sounding face 3
Focal regions are apparent cigar shapes.And when central angle is more than 180 degree, shape of the focal regions in the face XOZ and the face YOZ then levels off to circle
Shape, therefore focal regions become accordingly close to spherical regular shape.This shows when central angle is more than 180 degree, by part
Position forms standing wave, focal regions size can be obviously compressed on the direction of part, so that focal regions be made to become almost spherical.
Further, when the above central angle difference, the simulation sound field intensity on each axis (is represented, unit is with acoustic pressure
Pa) distribution as shown in Figure 6 to 8, simulates -6dB width of the sound field on each axis as shown in figure 9, and the focal regions body of -6dB width
It is long-pending then as shown in Figure 10.
When central angle be greater than 180 degree when, focal regions are significantly compressed in X-axis and Z axis, especially on Z axis, focal regions length from
Be compressed to approximate 1 wavelength close to 5 wavelength, finally make that X-axis, Y-axis, the size of focal regions is substantially suitable on Z axis, focal regions from
" cigar type " becomes subsphaeroidal, and volume substantially reduces；Meanwhile with the increase of central angle, acoustic pressure maximum value is also continuously improved, this
Show the diminution with focal regions volume, the energy density of focal regions significantly improves.
And when at a distance from above first plane 91 is between the second plane 92 (i.e. size of the sounding face 3 in Y direction) it is different
When, simulation sound field intensity (being represented with acoustic pressure, the unit Pa) distribution on each axis as shown in Figure 11 to Figure 13, and simulates sound field
- 6dB width on each axis is then as shown in figure 14, and the focal regions volume of -6dB width is then as shown in figure 15.
As it can be seen that focal regions size is also compressed with the increase of billiard table total height (i.e. size of the sounding face 3 in Y direction),
And become apparent from the compression of Y direction, correspondingly, focal regions volume is substantially reduced.This shows the first plane 91 and the second plane 92
Between distance be also influential on focal regions.
Embodiment 2:
The present embodiment provides a kind of focusing ultrasonic therapeutic apparatus comprising:
Above-mentioned ultrasonic transducer.
That is, can constitute by above ultrasonic transducer and other component combinations and utilize the ultrasonic therapy disease focused
The equipment of disease.For example, the focusing ultrasonic therapeutic apparatus can emit ultrasound (such as from emit in vitro), and by focus ultrasonic in liver cancer,
At the pathological tissues such as breast cancer, kidney, bone tumour, fibroid, to be treated to innocent and malignant tumour.
Due to ultrasonic transducer more than the focusing ultrasonic therapeutic apparatus use of the present embodiment, therefore its transonic is by human body
The influence of interior heterogeneous structure is small, and focal regions regular shape, the size of formation are small, energy density is high；It can accurately will be burnt as a result,
Domain is located at pathological tissues, rapid ablation lesion tissue, improves therapeutic efficiency and effect, while can also reduce as far as possible to lesion
The influence in surrounding, sound channel etc. is organized, safety is improved.
Certainly, according to the difference of therapentic part, shape, the size of ultrasonic transducer can also in the focusing ultrasonic therapeutic apparatus
Difference, and the sounding face of ultrasonic transducer can also be different from the relative positional relationship of human body.For example, sounding face can be similar to
The form " set " of " ring " (i.e. human body passes through the first notch and the second notch) outside a part of human body；Alternatively, can also be with
It is that a part of human body is entered in sounding face by the above third notch.
Certainly, in the focusing ultrasonic therapeutic apparatus, it may also include other components.For example, to make ultrasound can smoothly enter into people
Body, it is also settable for keeping the medium housing unit of sound bearing medium (such as de aerated water) between sounding face and human body surface.For another example,
For convenience for the treatment of, the settable therapeutic bed etc. for being used to support human body.For another example, also settable for driving to adjust focal regions position
Ultrasonic transducer and/or the driving unit of human motion.It for another example, is Real-Time Evaluation therapeutic effect, it is also settable to be used for real-time shape
At the imaging unit (such as B ultrasound, CT, MRI) of the image around focal regions.
It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case where the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection scope.
Claims (16)
1. a kind of ultrasonic transducer, including phonation unit and sounding face, for generating ultrasonic wave, feature exists the phonation unit
In,
The sounding face be with the first notch, the second notch, third notch spherical surface, wherein the corresponding ball of the sounding face
One centre of sphere face in face is main centre of sphere face, first notch and the second notch be located at diameter perpendicular to cue ball heart face with
Two intersections of spherical surface, the third notch connect the first notch and the second notch；
In the range of distinguishing certain distance apart from cue ball heart face two sides, the sounding face is in the section parallel with cue ball heart face
To be arc-shaped, the arc-shaped opening corresponds to third notch, and the arc-shaped corresponding central angle is greater than 180 degree and is less than
360 degree；
The sounding face has the ability of reflectance ultrasound, and the focusing ultrasonic wave that the phonation unit generates is corresponding in sounding face
The centre of sphere.
2. ultrasonic transducer as described in claim 1, which is characterized in that
The edge of first notch and the second notch is located in the first plane and the second plane.
3. ultrasonic transducer as claimed in claim 2, which is characterized in that
First plane and the second plane are each parallel to cue ball heart face.
4. ultrasonic transducer as claimed in claim 3, which is characterized in that
First plane is at a distance from the second interplanar in 80~1000mm.
5. ultrasonic transducer as claimed in claim 4, which is characterized in that
First plane is at a distance from the second interplanar in 150~500mm.
6. ultrasonic transducer as claimed in claim 3, which is characterized in that
First plane between cue ball heart face at a distance from be equal to second plane between cue ball heart face at a distance from.
7. ultrasonic transducer as described in claim 1, which is characterized in that
The sounding face be in the section for being arbitrarily parallel to cue ball heart face it is arc-shaped, the arc-shaped corresponding central angle is big
In 180 degree and less than 360 degree.
8. ultrasonic transducer as claimed in claim 7, which is characterized in that
Arc-shaped opening of the sounding face in the section for being arbitrarily parallel to cue ball heart face is towards identical.
9. ultrasonic transducer as claimed in claim 8, which is characterized in that
Arc-shaped corresponding central angle of the sounding face in the section for being arbitrarily parallel to cue ball heart face is equal.
10. ultrasonic transducer as described in claim 1, which is characterized in that
In the range of distinguishing certain distance apart from cue ball heart face two sides, the sounding face is in the section parallel with cue ball heart face
Arc-shaped corresponding central angle be greater than 180 degree and less than 300 degree.
11. ultrasonic transducer as claimed in claim 10, which is characterized in that
In the range of distinguishing certain distance apart from cue ball heart face two sides, the sounding face is in the section parallel with cue ball heart face
Arc-shaped corresponding central angle be greater than 200 degree and less than 280 degree.
12. ultrasonic transducer as described in claim 1, which is characterized in that
The diameter of the corresponding spherical surface of the sounding face is in 100~3000mm.
13. ultrasonic transducer as claimed in claim 12, which is characterized in that
The diameter of the corresponding spherical surface of the sounding face is in 200~2000mm.
14. ultrasonic transducer as described in claim 1, which is characterized in that
The range apart from cue ball heart face two sides difference certain distance is that the model of 40~500mm is distinguished away from cue ball heart face two sides
It encloses.
15. ultrasonic transducer as described in claim 1, which is characterized in that
The sounding face is symmetrical arranged relative to cue ball heart face.
16. a kind of focusing ultrasonic therapeutic apparatus characterized by comprising
Ultrasonic transducer described in any one of claim 1 to 15.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181547A (en) * | 2021-04-23 | 2021-07-30 | 清华大学 | Heart pump with ultrasonic thrombolysis function |
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2018
- 2018-01-22 CN CN201820101284.7U patent/CN209060387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181547A (en) * | 2021-04-23 | 2021-07-30 | 清华大学 | Heart pump with ultrasonic thrombolysis function |
| CN113181547B (en) * | 2021-04-23 | 2022-03-18 | 清华大学 | Heart pump with ultrasonic thrombolysis function |
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