CN102309341B - Ultrasonic transducer - Google Patents
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- CN102309341B CN102309341B CN201110274031.2A CN201110274031A CN102309341B CN 102309341 B CN102309341 B CN 102309341B CN 201110274031 A CN201110274031 A CN 201110274031A CN 102309341 B CN102309341 B CN 102309341B
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Abstract
The invention discloses an ultrasonic transducer, comprising an installing device, a crystal stack and a rear mass block, wherein the installing device is connected with a compression device; the crystal stack is arranged between the installing device and the compression device; and the rear mass block is arranged between the crystal stack and the compression device. The ultrasonic transducer is characterized in that both the contact end surface of the crystal stack and the contact end surface of the compression device are planes and are same in shape and size; the compression device is provided with a contact surface of the rear mass block contacted with the rear mass block; the contact surface of the rear mass block is centrosymmetric to the geometric center of the contact end surface of the compression device; and the area of the contact surface of the rear mass block is less than that of the contact end surface of the compression device. In the ultrasonic transducer, by improvement on the symmetry of the rear mass block, the uniformity of stress distribution in the ultrasonic transducer is improved, so that the efficiency of the ultrasonic transducer is improved.
Description
Technical field
The present invention relates generally to ultrasonic transducer and application thereof, particularly there is sandwich ultrasonic transducer and the application thereof of compressor.
Background technology
In prior art, ultrasound emission equipment has multiple application, for example, for operative treatment.The transducer of the vibration that it is supersonic frequency that ultrasound emission equipment generally includes electric energy conversion, this vibration is transmitted so that obtain the end of operating theater instruments and produces vibration.
Sandwich efficient ultrasonic transducer generally includes erecting device and rear mass, is provided with brilliant heap between erecting device and rear mass, and this crystalline substance heap is for replacing stacking piezoelectric element and electrode.Most of such efficient ultrasonic transducers are precompressed, use the hold-down bolt extending axially through crystalline substance heap to apply compression stress.This sandwich transducer with hold-down bolt is modulated onto a resonant frequency, and it is proportional that its length is designed to wavelength under resonant frequency therewith.In the time that ultrasonic transducer is worked, always keep compressive state, in vibration processes, its decrement is between minimal compression amount and maximum compressibility, the zero compression amount of minimal compression amount during with respect to uncompressed state is offset a little, and maximum compressibility can not exceed the decrement of material greatest compressive strength restriction.
Known at present, can be the assembly of bolt and packing ring for the compressor that compresses brilliant heap, can be also stud.Such bolt or packing ring connect or the assembling of any relevant acoustics for the acoustics of the each part of sandwich transducer.This acoustics connects very important for the frequency modulation(PFM) of assembly, thereby and only in this way just can make in assembly each part reach resonance to be driven.
The defect of prior art is, above-mentioned compressor cannot produce uniform pressure distribution at the axial direction of the radial direction of piezoelectric element or whole brilliant heap, in radial and axial direction, pressure distribution heterogeneous can reduce the efficiency of transducer and produce higher invalid heat, for the application scenario that has temperature limiting, the higher heat producing is very serious problem.Thereby the high invalid heat in transducer causes its Efficiency Decreasing, its maximum output is reduced, and, pressure limit heterogeneous the amplitude of compression, thereby limited the power capacity of transducer.
For the problems referred to above, existing businessman discloses a solution, as shown in Fig. 1 a to Fig. 1 c, this compressor utilizes erecting device 40 and the two ends that have the different rear mass 20 of big or small contact surface and be clipped in the first brilliant heap 30, in Fig. 1 b, because 201He Nei inclined-plane, outer inclined-plane 203 is noncontact face, the contact end face 202 that rear mass 20 contacts with bolt 10, be less than and the first brilliant heap 30 contact end faces 204 that contact, because less contact end face 202 does not contact with the root 104 of bolt head 101, root 104 stress effects of bolt head 101 are eliminated, thereby at piezoelectric element 31 and electrode (anelectrode 33, negative electrode 32) the more uniform stress distribution of middle generation.
But, still there is defect in this solution: rear mass 20 varying in size due to contact both sides end face, in the time of compression, easily produce distortion, this distortion and then can affect the uniformity of stress distribution in the first brilliant heap 30, specifically can be with reference to the each piezoelectric element distribution of the compressive stress cloud atlas in the crystalline substance heap in the ultrasonic transducer of Fig. 1 a shown in figure 2, in Fig. 2, the corresponding ultrasonic transducer axial direction of transverse axis, the corresponding ultrasonic transducer radial direction of the longitudinal axis, also show 8 stress contours, be respectively A=18MPa, B=20MPa, C=25MPa, D=30MPa, E=32MPa, F=35MPa, G=38MPa and H=39.44MPa.The distribution of stress not bery even in visible prior art, particularly away from radial center place.
Summary of the invention
The object of the invention is to solve in prior art, the piezoelectric element of ultrasonic transducer and the inhomogeneous defect of electrode stress distribution, particularly will avoid producing distortion because of the asymmetric of rear mass, and then affect the uniformity of stress distribution in brilliant heap.
Ultrasonic transducer disclosed by the invention, comprising:
Erecting device, described erecting device is connected with a compressor;
Brilliant heap, described brilliant heap is arranged between described erecting device and described compressor, and described brilliant heap comprises that some both positive and negative polarities replace stacking electrode, between two adjacent electrodes, is provided with piezoelectric element;
Rear mass, described rear mass is arranged between described brilliant heap and described compressor, and described rear mass has the crystalline substance heap contact end face contacting with described brilliant heap and the compressor contact end face contacting with described compressor;
Wherein:
Described brilliant heap contact end face contacts with described compressor that end face is plane and shape size is identical;
Described compressor has the rear mass contact surface contacting with described rear mass, described rear mass contact surface is centrosymmetric with respect to the geometric center of described compressor contact end face, and the area of described rear mass contact surface is less than the area of described compressor contact end face.
Above-mentioned ultrasonic transducer, wherein, described compressor is a bolt, described rear mass is sleeved on described bolt.
Above-mentioned ultrasonic transducer, wherein, described compressor has the end face near described rear mass, is provided with at least one boss on described end face, described boss comprises the boss contact surface contacting with described rear mass, and all described boss contact surfaces form described rear mass contact surface.
Above-mentioned ultrasonic transducer, wherein, described boss can be centrosymmetric, can be also annular.
Above-mentioned ultrasonic transducer, wherein, described boss is arranged on the not position of the geometric center of close described end face.
Above-mentioned ultrasonic transducer, wherein, described rear mass is annular, described end face and described boss are annular, the center line of the annulus width of described boss is set to the center line near the annulus width of described end face, and the annulus width span of described boss is the 1/3-2/3 of described end face annulus width.
Above-mentioned ultrasonic transducer, wherein, also comprise a front mass identical with described rear mass shape size, described front mass is arranged between described brilliant heap and described erecting device, described front mass has the erecting device contact end face contacting with described erecting device, described erecting device has the front mass contact surface contacting with described front mass, described front mass contact surface is centrosymmetric with respect to the geometric center of described erecting device contact end face, and the area of described front mass contact surface is less than the area of described erecting device contact end face.
Above-mentioned ultrasonic transducer, wherein, described erecting device has the second end face near described front mass, on described the second end face, be provided with at least one second boss, described the second boss comprises the second boss contact surface contacting with described front mass, and all described the second boss contact surfaces form described front mass contact surface.
Above-mentioned ultrasonic transducer, wherein, described boss can be centrosymmetric, can be also annular.
Above-mentioned ultrasonic transducer, wherein, described the second boss is arranged on the not position of the geometric center of close described the second end face.
Above-mentioned ultrasonic transducer, wherein, described front mass is annular, described the second end face and described the second boss are annular, the center line of the annulus width of described the second boss is set to the center line near the annulus width of described the second end face, and the annulus width span of described the second centrosymmetry boss is the 1/3-2/3 of described the second end face annulus width.
According to another aspect of the present invention, also disclose a kind of ultrasonic medical equipment, comprising:
Generator;
Ultrasonic transducer described above, described ultrasonic transducer is suitable for responding the electric energy that described generator produces and vibrates with supersonic frequency;
Transmitting device;
End-effector;
Wherein, described transmitting device is suitable for receiving supersonic vibration from described ultrasonic transducer, and described supersonic vibration is transferred to described end-effector, and described end-effector is suitable for receiving described supersonic vibration and correspondingly carrying out supersonic vibration from described transmitting device.
The present invention, by the symmetry of mass after improving, has effectively avoided the consequent distortion of rear mass, and then can improve better the uniformity of stress distribution in ultrasonic transducer, thereby improves the efficiency of ultrasonic transducer; Reduce the heat producing and do not needed the cooling provision of taking the initiative; And stress distribution can allow larger suppressed range uniformly, and then can cause larger actuating amplitude, makes transducer have the wider scope of application.
Brief description of the drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that the present invention and feature thereof, profile and advantage will become.In whole accompanying drawings, identical labelling is indicated identical part.Deliberately proportionally do not draw accompanying drawing, focus on illustrating purport of the present invention.In the accompanying drawings, for cheer and bright, part parts have been amplified.
Fig. 1 a is the schematic diagram for operating a kind of ultrasonic transducer in prior art;
Fig. 1 b is the rear mass schematic diagram for operating a kind of ultrasonic transducer in prior art;
Fig. 1 c is the bolt schematic diagram for operating a kind of ultrasonic transducer in prior art;
Fig. 2 is the each piezoelectric element distribution of the compressive stress cloud atlas in a crystalline substance heap specific embodiment, in ultrasonic transducer of the prior art shown in Fig. 1 a;
Fig. 3 shows the schematic diagram of ultrasonic transducer according to a particular embodiment of the invention;
Fig. 4 shows the schematic diagram of the rear mass of ultrasonic transducer according to a particular embodiment of the invention;
Fig. 5 a-g shows the schematic diagram of the bolt with different structure according to a particular embodiment of the invention;
Fig. 6 shows according to the each piezoelectric element distribution of the compressive stress cloud atlas in a crystalline substance heap specific embodiment of the present invention, in ultrasonic transducer;
Fig. 7 show according to one according to the present invention change example, the schematic diagram of bolt in ultrasonic transducer;
Fig. 8 is the cutaway view of Fig. 7;
Fig. 9 show according to according to the present invention another change example, the schematic diagram of bolt in ultrasonic transducer;
Figure 10 is the cutaway view of Fig. 9;
Figure 11 a illustrates according to one of the present invention and changes schematic diagram example, ultrasonic transducer; And
Figure 11 b is the schematic diagram of the front mass in Figure 11.
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the present invention is further elaborated.Detailed description of the invention described herein is only for explaining the present invention, the protection domain being not intended to limit the present invention.
Show the schematic diagram of ultrasonic transducer according to a particular embodiment of the invention with reference to figure 3.Ultrasonic transducer of the present invention comprises: erecting device 4, and erecting device 4 is connected with a compressor, connected mode can be to be threaded, and also can adopt such as other connected modes such as spring connection, welding and replace, brilliant heap 3, is arranged between erecting device 4 and described compressor, and brilliant heap 3 comprises that some both positive and negative polarities replace stacking electrode, between two adjacent electrodes, is provided with piezoelectric element 31, rear mass 2, is arranged between brilliant heap 3 and described compressor, and rear mass 2 has the crystalline substance heap contact end face contacting with crystalline substance heap 3 and the compressor contact end face contacting with described compressor, described compressor, for crystalline substance heap 3 is applied to compression stress, is attached to described erecting device by described brilliant heap, and described erecting device is suitable for receiving supersonic vibration from described brilliant heap, wherein, described brilliant heap contact end face contacts with described compressor that end face is plane and shape size is identical, described compressor has the rear mass contact surface contacting with described rear mass, described rear mass contact surface is centrosymmetric with respect to the geometric center of described compressor contact end face, the area of described rear mass contact surface is less than the area of the described compressor contact end face of described rear mass, described rear mass contact surface can be formed by the boss on the end face of the close described rear mass of described compressor, also can be formed by other modes, for example, near on the end face of described rear mass, at least one boss is set above-mentioned, described boss can be centrosymmetric, also can be annular, described boss comprises the boss contact surface contacting with described rear mass, the area summation of all described boss contact surfaces is less than the area of the described compressor contact end face of described rear mass, here, all described boss contact surfaces form described rear mass contact surface.
As mentioned above, the ultrasonic transducer of the embodiment of the present invention is longitudinally disposed with erecting device, brilliant heap, rear mass and compressor along it.Preferably, the present invention is in order to improve the uniformity of stress distribution in ultrasonic transducer, above-mentioned erecting device, brilliant heap, rear mass compressor and boss can possess the centre symmetry with respect to transducer longitudinal axis, for example, for the convenience of processing, can adopt annular, annular particularly, certainly, use other centrosymmetric image also passable.
Particularly, in conjunction with Fig. 4 and Fig. 5 a, the disclosed ultrasonic transducer of the embodiment of the present invention, comprise: erecting device 4, this erecting device 4 is threaded connection to the screw rod 1B of a bolt 1, in this embodiment, compressor is bolt 1, and wherein the end of screw rod 1B is provided with screw thread 17, and bolt 1 is connected and installed device 4 by screw thread 17; Brilliant heap 3, this crystalline substance heap 3 has hole, can be sleeved on screw rod 1B and between erecting device 4 and the head 11 of bolt 1, brilliant heap 3 comprises that some both positive and negative polarities replace stacking electrode (anelectrode 33, negative electrode 32), between two adjacent electrodes, be provided with a piezoelectric element 31, because improvement of the present invention does not relate to piezoelectric element 31 and the electrode (anelectrode 33, negative electrode 32) in brilliant heap 3, therefore piezoelectric element 31 and electrode (anelectrode 33, negative electrode 32) are same as the prior art.
Rear mass 2 has hole, preferably can be annular, can be sleeved on screw rod 1B upper, is clipped between brilliant heap 3 and the head 11 (with reference to figure 5a) of bolt 1; Bolt 1, for crystalline substance heap is applied to compression stress, is attached to erecting device 4 by crystalline substance heap 3, and erecting device 4 is suitable for receiving supersonic vibration from crystalline substance heap 3, and supersonic vibration is sent to the other end from one end of close brilliant heap 3; Wherein, as shown in Figure 4, rear mass 2 has two end faces 21 and 22, end face 21 contacts with the head 11 of bolt 1, be compressor contact end face, end face 22 contacts with brilliant heap 3, i.e. brilliant heap contact end face, these two end faces 21 and 22 are plane, and these two end faces 21 are identical with 22 shape size; Referring again to Fig. 5 a, bolt 1 head 11 has the end face 1A near rear mass 2, on end face 1A, be provided with centrosymmetric annular boss 1C, annular boss 1C comprises the boss contact surface 15 contacting with rear mass 2, the area of boss contact surface 15 is less than the area of the end face 21 of rear mass 2, in Fig. 5 a, annular boss 1C also has the 12He Nei inclined-plane, outer inclined-plane 13 that forms boss contact surface 15, between the root 14 of screw rod 1B and screw thread 17, be polished rod 16, polished rod 16 is for being set with rear mass 2, brilliant heap 3.
In a preference, brilliant heap 3 has the rear mass contact end face 3A contacting with rear mass 2, this rear mass contact end face 3A is with rear mass 2, identical with shape, the area of brilliant heap 3 end faces that contact 22, that is, the shape of two end faces of rear mass 2 and the rear mass contact end face 3A of brilliant heap 3, long-pending all identical mutually, and the area of boss contact surface 15 is less than the area of the rear mass contact end face 3A of brilliant heap 3, thereby the contact area of rear mass 2 and bolt 1 is less than the contact area of rear mass 2 and brilliant heap 3.
With respect to the different rear mass (shape of two end faces, the unsymmetry that area difference has caused rear mass block structure) of shape, area of two end faces of prior art, under compressive state, the rear mass 2 of the embodiment of the present invention possesses symmetry along transducer y direction, its distortion has effectively been reduced, thereby has further improved the uniformity of stress distribution.
Further, on end face 1A, be provided with multiple annular boss, with reference to figure 7 and Fig. 9, show respectively and on end face 1A, there are 2 annular boss (1C and 1C ') and 3 annular boss (1C, 1C ' and 1C ") embodiment, with reference to figure 8 and Figure 10, the height of multiple annular boss is identical, further, the area of the boss contact surface on size and the annular boss 1C ' of the boss contact surface (not indicating in Fig. 7 to Figure 10) on annular boss 1C, annular boss 1C " on the size of boss contact surface all not identical, and, the area summation of all boss contact surfaces is less than the end face 22 of rear mass 2, in this embodiment, all boss contact surfaces have formed the rear mass contact surface of compressor.
In conjunction with Fig. 5 a, with reference to figure 5b to Fig. 5 g, show according to the embodiment of multiple different bolt heads of the present invention.It will be understood by those skilled in the art that, the head 11 of bolt 1 can be columniform, hexagonal prismoid shape or that other are common bolt head, in the variation example shown in Fig. 5 b to Fig. 5 g, on the head 11 of each bolt 1, all there is an annular boss 1C, the 12He Nei inclined-plane, outer inclined-plane 13 (with reference to figure 5a) of annular boss 1C and end face 1A between angle be to be greater than the obtuse angle of 90 degree or to equal 90 degree.Annular boss 1C is concentric with described end face 1A, and annular boss 1C is around end face 1A center and be arranged on the not position near end face 1A center.Preferably, annular boss 1C is arranged on the outer rim of end face 1A.
In a specific embodiment, in order to obtain better stress distribution, end face 1A and annular boss 1C are annular, the center line of the annulus width of annular boss 1C is set to the center line near the annulus width of end face 1A, and the annulus width span of annular boss 1C is the 1/3-2/3 of end face 1A annulus width.
With reference to the use shown in figure 6 the stress distribution cloud atlas of each piezoelectric element in ultrasonic transducer of the present invention, peek value is respectively 8 contour of A=18MPa, B=20MPa, C=25MPa, D=30MPa, E=32MPa, F=35MPa, G=38MPa and H=43.908MPa, comparison diagram 2 again, in Fig. 6, stress contour is more level and smooth than the stress contour in Fig. 2, size is arranged in order, visible relative prior art, stress distribution of the present invention is greatly improved.
According to the present invention, by avoiding bolt head near coming in contact between the part of screw rod 1B root and rear mass 2, reduce the contact area between bolt head and rear mass, and make rear quality there is symmetry along transducer y direction, can realize stress distribution more uniformly.
And then the annular boss on bolt head also can adopt other strip or block to replace, these strips or block thickness are identical, for contacting rear mass.The area that these strips or block contact with rear mass is less than the area that does not have the bolt head of described strip or block to contact with rear mass.Need ensure, these strips or block be with respect to screw rod centrosymmetry be arranged on bolt head.Those skilled in the art are optimized by finite element analysis for position and the large I of contact surface, to realize the most uniform stress distribution in given transducer dimensions space, it is prior art that concrete employing finite element analysis software is optimized, and does not repeat them here.
In conjunction with reference to figure 11a and Figure 11 b, in another preference, mass 2A before being provided with between crystalline substance heap 3 and erecting device 4; Front mass 2A has respectively and crystalline substance heap 3 two end faces that contact with erecting device 4, and the shape size of these two end faces is identical.In the present embodiment, erecting device 4 has the end face 14A near front mass 2A, on end face 14A, be provided with centrosymmetric annular boss 34A, annular boss 34A comprises the boss contact surface 24A contacting with front mass 2A, and the area of boss contact surface 24A is less than the area of the above-mentioned end face of front mass 2A.As shown in the figure, annular boss 34A comprises outer inclined-plane 64AHe Nei inclined-plane 74A, and the angle of outer inclined-plane 64AHe Nei inclined-plane 74A and end face 14A is obtuse angle or 90 degree that are greater than 90 degree.Erecting device 4 has inner chamber 44A, is provided with screw thread 54A, for connecting bolt 1 on this inner chamber 44A.
Further, can be provided with multiple annular boss 34A on end face 14A, the height of multiple annular boss 34A is identical, the boss contact surface of multiple annular boss 34A can be identical, also can be different, and the area summation of all boss contact surfaces is less than front mass.
In above-mentioned ultrasonic transducer, annular boss 34A is concentric with end face 14A, and annular boss 34A is around described end face 14A center and be arranged on the position near end face 14A center, and for example, annular boss 34A is arranged on the outer rim of end face 14A.
Preferably, end face 14A and annular boss 34A are annular, and the center line of the annulus width of annular boss 34A is set to the center line near the annulus width of end face 14A, and the width span of annular boss 34A is the 1/3-2/3 of the annulus width of end face 14A.
In the present invention, bolt 1 and rear mass 2, front mass 2A play the effect of compression, and those skilled in the art can adopt other parts to replace according to prior art.
Further, ultrasound transducer application of the present invention is in a kind of ultrasonic medical equipment, and described ultrasonic medical equipment comprises: generator, ultrasonic transducer of the present invention, transmitting device and end-effector.Described ultrasonic transducer is suitable for responding the electric energy that described generator produces and vibrates with supersonic frequency, described transmitting device connects described ultrasonic transducer and described end-effector, described transmitting device receives supersonic vibration from described ultrasonic transducer, and described supersonic vibration is transferred to described end-effector, described end-effector receives described supersonic vibration and correspondingly carries out supersonic vibration from described transmitting device, thereby treats by end-effector.
It should be appreciated by those skilled in the art that those skilled in the art can realize described variation example in conjunction with prior art and above-described embodiment, such variation example does not affect flesh and blood of the present invention, does not repeat them here.
Above preferred embodiment of the present invention is described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and the equipment of wherein not describing in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the equivalent embodiment of equivalent variations, this does not affect flesh and blood of the present invention.Therefore, every content that does not depart from technical solution of the present invention,, all still belongs in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present invention.
Claims (10)
1. ultrasonic transducer, comprising:
Erecting device, described erecting device is connected with a compressor;
Brilliant heap, described brilliant heap is arranged between described erecting device and described compressor, and described brilliant heap comprises that some both positive and negative polarities replace stacking electrode, between two adjacent electrodes, is provided with piezoelectric element;
Rear mass, described rear mass is arranged between described brilliant heap and described compressor, and described rear mass has the crystalline substance heap contact end face contacting with described brilliant heap and the compressor contact end face contacting with described compressor;
It is characterized in that:
Described compressor, for described brilliant heap is applied to compression stress, is attached to described erecting device by described brilliant heap, and described erecting device is suitable for receiving supersonic vibration from described brilliant heap;
Described brilliant heap contact end face contacts with described compressor that end face is plane and shape size is identical;
Described compressor has the rear mass contact surface contacting with described rear mass, described rear mass contact surface is centrosymmetric with respect to the geometric center of described compressor contact end face, and the area of described rear mass contact surface is less than the area of described compressor contact end face.
2. ultrasonic transducer according to claim 1, is characterized in that, described compressor is a bolt, and described rear mass is sleeved on described bolt.
3. ultrasonic transducer according to claim 1 and 2, it is characterized in that, described compressor has the end face near described rear mass, on the described close end face of described rear mass, be provided with at least one boss, described boss comprises the boss contact surface contacting with described rear mass, and all described boss contact surfaces form described rear mass contact surface.
4. ultrasonic transducer according to claim 3, is characterized in that, described boss is arranged on the position of the geometric center of the close not described end face near described rear mass.
5. ultrasonic transducer according to claim 3, it is characterized in that, described rear mass is annular, described end face and described boss near described rear mass is annular, the center line of the annulus width of described boss is set to the center line near the annulus width of the described end face near described rear mass, and the annulus width span of described boss is the 1/3-2/3 of the described end face annulus width near described rear mass.
6. according to claim 1, 2, ultrasonic transducer in 4 to 5 described in any one, it is characterized in that, also comprise a front mass identical with described rear mass shape size, described front mass is arranged between described brilliant heap and described erecting device, described front mass has the erecting device contact end face contacting with described erecting device, described erecting device has the front mass contact surface contacting with described front mass, described front mass contact surface is centrosymmetric with respect to the geometric center of described erecting device contact end face, the area of described front mass contact surface is less than the area of described erecting device contact end face.
7. ultrasonic transducer according to claim 6, it is characterized in that, described erecting device has the second end face near described front mass, on described the second end face, be provided with at least one second boss, described the second boss comprises the second boss contact surface contacting with described front mass, and all described the second boss contact surfaces form described front mass contact surface.
8. ultrasonic transducer according to claim 7, is characterized in that, described the second boss is arranged on the not position of the geometric center of close described the second end face.
9. according to the ultrasonic transducer described in claim 7 or 8, it is characterized in that, described front mass is annular, described the second end face and described the second boss are annular, the center line of the annulus width of described the second boss is set to the center line near the annulus width of described the second end face, and the annulus width span of described the second boss is the 1/3-2/3 of described the second end face annulus width.
10. a ultrasonic medical equipment, comprising:
Generator;
Ultrasonic transducer as described in any one in claim 1,2,4,5,7,8, described ultrasonic transducer is suitable for responding the electric energy that described generator produces and vibrates with supersonic frequency;
Transmitting device;
End-effector;
It is characterized in that, described transmitting device is suitable for receiving supersonic vibration from described ultrasonic transducer, and described supersonic vibration is transferred to described end-effector, described end-effector is suitable for receiving described supersonic vibration and correspondingly carrying out supersonic vibration from described transmitting device.
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| CN201110274031.2A CN102309341B (en) | 2011-09-15 | 2011-09-15 | Ultrasonic transducer |
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| CN201110274031.2A CN102309341B (en) | 2011-09-15 | 2011-09-15 | Ultrasonic transducer |
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| CN102309341B true CN102309341B (en) | 2014-10-01 |
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| CN106311583A (en) * | 2015-07-02 | 2017-01-11 | 瑞奇外科器械(中国)有限公司 | Ultrasonic transducer and medical ultrasonic handpiece |
| CN105430562B (en) * | 2015-12-15 | 2018-10-26 | 陕西师范大学 | The band spread electrical method and double excitation underwater acoustic transducer of double excitation energy converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2388741B (en) * | 2002-05-17 | 2004-06-30 | Morgan Crucible Co | Transducer assembly |
| US7285895B2 (en) * | 2005-03-15 | 2007-10-23 | Crescendo Technologies, Llc | Ultrasonic medical device and method |
| US20060244340A1 (en) * | 2005-04-27 | 2006-11-02 | Marathe Kaustubh P | High power ultrasonic transducer |
| WO2007087411A2 (en) * | 2006-01-23 | 2007-08-02 | Piezoinnovations | Methods of manufacture of sonar and ultrasonic transducer devices and composite actuators |
| CN100530348C (en) * | 2006-11-10 | 2009-08-19 | 中国科学院声学研究所 | Double resonant vibrations and double promptings longitudinal vibration transducer |
| CN201227294Y (en) * | 2008-07-18 | 2009-04-29 | 华外医疗器械(上海)有限公司 | Medical ultrasonic transducing device |
| CN102019273B (en) * | 2010-12-21 | 2012-08-01 | 广东固特超声实业有限公司 | Ultrasonic transducer |
| CN102136268B (en) * | 2011-01-27 | 2012-09-05 | 西北工业大学 | Bent piezoelectric-ceramic low-frequency underwater acoustic transducer |
| CN202356280U (en) * | 2011-09-15 | 2012-08-01 | 华外医疗器械(上海)有限公司 | Ultrasonic energy transducer |
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Address after: 201203 Shanghai Zhangjiang Road No. 351, No. 1 GuoShouJing building room 627 Co-patentee after: REACH SURGICAL Inc. Patentee after: CHINA SURGICAL (SHANGHAI) Corp. Address before: 201203 Shanghai Zhangjiang Road No. 351, No. 1 GuoShouJing building room 627 Co-patentee before: REACH SURGICAL, Inc. Patentee before: CHINA SURGICAL (SHANGHAI) Corp. |
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