EP2691948A1 - Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surface - Google Patents
Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surfaceInfo
- Publication number
- EP2691948A1 EP2691948A1 EP12714787.4A EP12714787A EP2691948A1 EP 2691948 A1 EP2691948 A1 EP 2691948A1 EP 12714787 A EP12714787 A EP 12714787A EP 2691948 A1 EP2691948 A1 EP 2691948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transducer elements
- ultrasonic transducer
- ultrasonic
- zone
- focusing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000000694 effects Effects 0.000 claims abstract description 30
- 230000003902 lesion Effects 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 33
- 238000002604 ultrasonography Methods 0.000 claims description 21
- 238000002560 therapeutic procedure Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 238000002592 echocardiography Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 230000004913 activation Effects 0.000 abstract description 2
- 238000000265 homogenisation Methods 0.000 abstract description 2
- 210000001519 tissue Anatomy 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/32—Sound-focusing or directing, e.g. scanning characterised by the shape of the source
Definitions
- the present invention relates to the technical field of devices or devices comprising an ultrasonic probe formed by a plurality of ultrasonic transducer elements, adapted to emit high intensity focused ultrasound (HIFU).
- HIFU high intensity focused ultrasound
- the object of the present invention finds particularly advantageous applications in the field of therapeutic treatments by focussed ultrasonic waves.
- the ultrasonic waves pass between the emission surface and the focusing zone, various propagation media of different nature such as the water of a cooling circuit, the skin, the fat, the muscles, etc. However, these different media have different acoustic attenuation characteristics. It thus appears, for each of the paths traveled, an attenuation of the ultrasonic waves depending on the distance traveled in each medium through.
- Ultrasonic waves will focus on the focus area (point or crown) giving rise to a progressive increase in pressure along the path of the ultrasonic wave.
- the transducer elements have identical emission surfaces so that each of them has the same electrical impedance.
- the control circuits of each of these transducer elements are also identical to facilitate the realization of such a device.
- transducers described by these patents do not make it possible to homogenize the energy contributions made by the various ultrasonic transducer elements to a specific treatment area since the focusing and attenuation effects experienced by the ultrasonic waves on their path are not not taken into account.
- US Pat. No. 5,922,962 describes an ultrasonic transducer comprising a series of transducer elements having identical lengths but different widths. The widths of the transducer elements are determined so as to maintain the same ultrasound beam profile, ie the same ultrasound resolution, regardless of the focusing distance.
- This paper describes various beamforming techniques for dynamically focusing at different depths in transmit and receive modes as well as various apodization techniques to reduce side-lobe effects. These beamforming techniques do not take into account acoustic attenuations of the ultrasonic waves on the path between the target zone and the transducer elements in order to obtain in the target zone a substantially identical energy input of the ultrasonic waves emitted by each of the transducer elements.
- EP 0 401 027 discloses imaging transducers with the same disadvantages as the transducer described by US Pat. No. 5,922,962.
- the transducers described by such documents are not intended to homogenize the energetic contributions of the different transducer elements, insofar as it is not sought a supply of energy in a target area for therapy purposes.
- the present invention therefore aims to overcome the drawbacks of the state of the art by proposing a new focusing technique of ultrasonic waves for homogenizing energy contributions on a target area to obtain tissue biological lesions.
- the method of generating ultrasound waves focused on a focusing zone to ensure biological lesions comprises activating a plurality of ultrasonic transducer elements distributed on a transmitting surface to emit respectively a a plurality of focused ultrasound waves in the focusing zone, passing through propagation media with different acoustic attenuation.
- a target zone is chosen in which it is desired to homogenize the energy inputs of the ultrasonic waves emitted by the ultrasonic transducer elements
- the focusing effect and the acoustic attenuations of the ultrasonic waves are compensated with ultrasonic transducer elements, at least some of which have non-identical emission surfaces, so that in the target zone the energy input ultrasonic waves emitted by the different ultrasonic transducer elements is substantially identical.
- the method according to the invention may additionally comprise in combination at least one and / or the following additional characteristics:
- ultrasonic transducer elements of elementary sizes so as to constitute ultrasonic transducer elements of different emission surfaces that can be configured according to the acoustic attenuation encountered
- Max E (t) the maximum value of the energy contribution of the transducer element t located at the periphery of the emission surface
- Max E (n) the maximum value of the energy contribution of the transducer element n in the target area
- Another object of the invention is to propose a therapy apparatus for generating ultrasound waves focused on a focusing zone, comprising an ultrasonic probe formed by a plurality of ultrasonic transducer elements distributed on a transmission surface to emit a plurality of focused ultrasonic waves in the focusing zone, in passing through propagation media with different acoustic attenuations, the ultrasonic transducer elements being excited by control signals from a control circuit, characterized in that at least some of the transducing transducer elements have non-identical transmitting surfaces for emitting focused ultrasonic waves which, in a target area, have substantially identical energy inputs.
- apparatus according to the invention may additionally have in combination at least one and / or the following additional characteristics:
- the ultrasonic transducer elements are driven by excitation signals of substantially identical values
- the ultrasonic transducer elements are distributed according to a concave emission surface that is truncated or not,
- the ultrasonic transducer elements are distributed according to rings or segments of rings concentric with each other along the axis of focus by having different emission surfaces
- the ultrasonic transducer elements are distributed on a flat surface.
- Figure 1 is a perspective view of a first embodiment of a therapy probe according to the invention.
- Figure 2 is a schematic view of a half-section elevation of the therapy probe illustrated in FIG. 1 to describe the object of the invention.
- Figures 3A-3D are schematic half elevation views of the therapy probe illustrated in FIG. 1 and respectively showing the focusing effect, the acoustic absorption effect, the combination of the focusing and absorption effects, the rebalancing of the energy supply in a target zone by application of the invention.
- Figures 4 and 5 are diagrams in half-section elevation for explaining a variant according to the invention.
- Figure 6 is a top view showing on the left side, the distribution of ultrasonic transducer elements of the prior art and on the right side, the distribution of ultrasonic transducer elements according to the invention.
- Figure 7 shows an exemplary embodiment of a therapy probe according to the invention of the planar type.
- FIG. 7A and 7B show another alternative embodiment of the probe described in FIG. 7, with FIG. 7A illustrating the probe with elementary ultrasonic transducer elements of the same surface which in FIG. 7B are electronically assembled to present a surface modulation identical to that illustrated in FIG. 7.
- FIGS. 1 and 2 illustrate a first embodiment of an ultrasound therapy probe 1 forming part of a device for generating focused ultrasound waves.
- the ultrasonic probe i comprises a plurality of ultrasonic transducer elements 3 distributed along a transmission surface 4.
- the ultrasonic transducer elements 3 are excited by control signals coming from a control circuit not shown but known per se and adapted from whereby the ultrasonic transducer elements 3 emit focused ultrasonic waves in a focusing zone 5 to ensure biological or tissue lesions.
- the ultrasonic transducer elements 3 are distributed along a concave emission surface 4 and each have a ring or crown shape.
- the ultrasonic transducer elements 3 are therefore mounted concentrically with respect to each other and with respect to the axis of focus X.
- the ultrasonic transducer elements 3 have non-identical emission surfaces for emitting focused ultrasound waves which in a target zone 7 have substantially identical energy inputs.
- the ultrasonic transducer elements 3 have surfaces of different values to compensate for differences in focus and acoustic attenuation experienced by the ultrasound waves during their path between the emission surface 4 and the target zone 7.
- This target zone 7 can thus be chosen, as will be shown in the following description at all locations from the transmission surface 4 and up to the focusing area 5, the latter being the target area 7 in an advantageous embodiment.
- the first propagation medium E t and the second propagation medium E 2 have a separation zone or an interface 6.
- This second medium E 2 which has an acoustic attenuation A 2 (with A 2 ⁇ Ai) extends at least as far as 5
- the target zone 7 is a plane located in the example shown in FIG. 2, in the second medium E 2 , between the focusing zone 5 and the interface 6.
- the focusing effect is due to the concavity of the emission surface 4 giving rise to a strong increase of the pressure along the path of the ultrasonic wave while the acoustic attenuation which represents the energy transfer of the
- the ultrasonic wave towards its propagation medium depends mainly on the absorbing properties of the propagation medium, resulting in a decrease in pressure during the path traveled.
- the pressure of an ultrasonic wave between the target zone 7 and the probe 1 is a function of the distance traveled by the waves in each of the media E 1 , E 2 and has the following expression (1):
- Rc radius of curvature of the transducer element (m)
- the distances traveled are unequal so that the ultrasonic waves emitted by a transducer element located at the periphery the emission surface have a greater distance to travel than those emitted from the center of the emission surface and are therefore attenuated when moving away from the focusing axis x.
- the combination of these two phenomena gives rise to the pressure curve Pi illustrated in FIG. 3C.
- This pressure curve shows a pressure inequality at the target zone 7 (namely the skin in the example considered), this pressure inequality can lead to the creation of burns close to the axis of focus x.
- this inequality in terms of the energy contribution in the target zone 7 is compensated by assigning to the ultrasonic transducer elements 3, surfaces of different sizes or values. It should be noted that all the ultrasonic transducer elements 3 are driven by excitation signals of substantially identical values. In other words, the same power setpoint is applied to all the ultrasonic transducer elements 3. It thus appears possible to use all the power available by the probe.
- the method according to the invention thus aims at determining a surface weighting factor F s for each of the ultrasonic transducer elements 3, such that:
- n the number of the transducer element 3 and varying from 1 to t in the axis of focus direction X towards the periphery of the emission surface 4,
- the power factor F p (n) is expressed as a function of the focusing effect and the acoustic attenuation on each transducer element ultrasound 3 between the transducer element and the target zone 7, during a cutting of the emission surface in equal areas (before modulation).
- the power factor F p (n) can be expressed as follows:
- Max E (t) maximum value of the energy contribution of the transducer element t located at the periphery of the emission surface 4,
- Max E (n) maximum value of the energy contribution of the transducer element n in the target zone 7.
- each ultrasonic transducer element 3 of rank n is such that:
- the transducer elements 3 close to the center of the probe have a greater surface area with respect to the transducer elements 3 close to the periphery of the probe.
- the surface of the transducer elements 3 increases for the transducer elements 3 close to the center and inversely decreases for the transducer elements close to the periphery of the probe.
- the ultrasonic waves pass through two acoustic attenuation media whose interface 6 between the media is flat, parallel to the plane tangent to the probe.
- the number of acoustic attenuation media traversed by the ultrasonic waves can to be more important.
- the shape of the interface 6 between the acoustic attenuation media may be different from a plane parallel to the plane tangent to the probe.
- Fig. 4 illustrates an example in which the interface 6 between the two acoustic attenuation media E 1 , E 2 is of convex shape.
- the volume of water (acoustic attenuation medium Ei) is greater so that the focusing contrast and attenuation is greater.
- the contrast of the energy contributions is accentuated for an interface 6 of convex shape with respect to a plane interface.
- an interface 6 of concave shape as illustrated in FIG. 5 leads to a rebalancing of the energy contributions with respect to the example illustrated in FIG. 2.
- the energy contributions of the ultrasonic transducer elements are identical. in the target area 7.
- the method according to the invention aims to choose a target zone 7 in which is desired a homogenization of the energy input of the ultrasonic waves emitted by the ultrasonic transducer elements 3.
- this target zone corresponds to the focusing zone.
- this target zone corresponds to a plane included in a propagation medium and in particular in the second propagation medium, corresponding to the tissues situated between the cooling water and the tissue to be treated.
- the method according to the invention aims at determining the focusing effect as well as the acoustic attenuations of the ultrasonic waves on their path between this target zone 7 and the ultrasonic transducer elements 3.
- this determination phase consists in taking the focusing effect and the acoustic attenuation of the various propagation media traversed and the distance between the ultrasonic transducer elements 3 and the interface or the interfaces between the media. This distance can be calculated according to the configuration of the propagation medium or media with respect to the ultrasonic transducer elements 3. It should be noted that the distance between the ultrasound transducer elements 3 and the interface of the media can be determined more precisely. by measuring the reflected echoes in A mode which consists in measuring the echoes reflected following the sending of a calibration signal by the ultrasonic transducer elements 3.
- the pressure in the target zone 7 can be calculated for a multitude of ultrasonic waves coming from the emission surface making it possible to obtain the pressure curve Pi illustrated in FIG. FIG. 3C.
- the transmission surface 4 is cut from the focusing axis x to its peripheral portion.
- the emission surface 4 is cut into concentric rings each contributing to a part of the pressure curve Pi.
- the maximum pressure value is determined and a The surface weighting factor F s is applied in such a way that this maximum pressure value becomes identical on all the elements (curve P2).
- the method according to the invention therefore makes it possible to modulate the emission surface of the ultrasonic transducer elements 3 in areas of different sizes but adapted so that the energy input of the ultrasonic waves is substantially identical in the target zone 7.
- the different transducer elements 3 are configured with emission surfaces of different values adapted for one or more given applications. It should be noted that the greater the number of ultrasonic transducer elements 3, the more accurate and efficient the modulation.
- Fig. 6 illustrates the cutting of a focusing probe having transducer elements 3 in the form of rings.
- the left part of FIG. 6 represents ultrasonic transducer elements of equal areas whereas the right part of FIG. 6 represents ultrasonic transducer elements 3 with different surfaces modulated according to the method according to the invention.
- the method according to the invention can be implemented for therapy probes of various shapes.
- the ultrasonic transducer elements 3 are distributed according to a complete concave emission surface of revolution.
- this concave surface may be truncated on either side of a central plane of symmetry so that the ultrasonic transducer elements 3 are distributed according to ring segments concentric with each other.
- this concave surface has the shape of a torus, that is to say that this concave surface is generated by the rotation of a concave curve segment of finite length around an axis of symmetry. which is at a non-zero distance from the center of curvature of the concave curve segment.
- this emission area of toric shape can be truncated on either side of a central plane of symmetry.
- the concave emission surface is derived from a cylindrical geometry generated by the translation of two concave curve segments of finite length, symmetrical with respect to a plane of symmetry, this translation being carried out along a length limited and in a direction perpendicular to the plane containing said concave curve segments.
- Fig. 7 illustrates by way of example, a probe 1 of planar shape, the various ultrasonic transducer elements 3 have emission surfaces of different sizes.
- each ultrasound transducer element is powered by signals having phase shifts to obtain a focusing effect in the target area.
- Another object of the invention is to be able to propose a technique for producing a probe configurable on demand depending on the configuration of the ultrasonic wave propagation media.
- this technique provides for choosing an elementary size for all the ultrasonic transducer elements 3i.
- FIG. 7A illustrating a planar emission surface
- all elementary ultrasonic transducer elements 3i have the same emission surface.
- These elementary ultrasonic transducer elements 3i are then grouped so as to produce ultrasonic transducer elements 3 which have different surface sizes (FIG 7B).
- this technique makes it possible to create, on demand, ultrasonic transducer elements 3 having different emission surfaces.
- the ultrasonic transducer elements 3i may have different element sizes, with an identical width for all the ultrasonic transducer elements 3i.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Surgical Instruments (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Mechanical Engineering (AREA)
- Dentistry (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1152657A FR2973550B1 (fr) | 2011-03-30 | 2011-03-30 | Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surface |
PCT/FR2012/050544 WO2012131212A1 (fr) | 2011-03-30 | 2012-03-15 | Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surface |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2691948A1 true EP2691948A1 (fr) | 2014-02-05 |
EP2691948B1 EP2691948B1 (fr) | 2015-03-11 |
Family
ID=45974410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12714787.4A Active EP2691948B1 (fr) | 2011-03-30 | 2012-03-15 | Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surface |
Country Status (6)
Country | Link |
---|---|
US (2) | US9936969B2 (fr) |
EP (1) | EP2691948B1 (fr) |
JP (1) | JP6100751B2 (fr) |
CN (1) | CN103650031B (fr) |
FR (1) | FR2973550B1 (fr) |
WO (1) | WO2012131212A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3012042B1 (fr) * | 2013-10-23 | 2015-12-04 | Edap Tms France | Appareil de generation d'ondes ultrasonores focalisees a temps de traitement reduit |
US20150320394A1 (en) * | 2014-05-12 | 2015-11-12 | University Of Washington | Toric focusing for radiation force applications |
CN104622525B (zh) * | 2015-02-28 | 2017-01-04 | 西安交通大学 | 双倍频共焦叠加聚焦超声球面分裂阵及分裂焦点控制方法 |
KR102262167B1 (ko) * | 2015-05-20 | 2021-06-08 | 서강대학교산학협력단 | 초음파 변환자의 성능 평가 장치 및 방법 |
US11395666B2 (en) * | 2016-06-28 | 2022-07-26 | Hi Impacts Ltd. | Ballistic shockwave focusing waveguide |
FR3065571B1 (fr) * | 2017-04-24 | 2019-07-05 | Edap Tms France | Procede de refroidissement d'une sonde ultrasonore et sonde incluant un tel refroidissement |
CN107863097B (zh) * | 2017-11-28 | 2021-07-02 | 华中科技大学 | 一种基于图案化裁剪技术聚焦声波的方法 |
CN108062947B (zh) * | 2017-11-28 | 2021-06-29 | 华中科技大学 | 一种基于图案化裁剪技术形成声涡旋的方法 |
RU2697566C2 (ru) * | 2017-12-28 | 2019-08-15 | Общество с ограниченной ответственностью "ГидроМаринн" | Электроакустический преобразователь для параметрической генерации ультразвука |
CN111494817B (zh) * | 2020-02-26 | 2022-03-04 | 南北兄弟药业投资有限公司 | 一种hifu设备大焦域形成系统及其焦域形成方法 |
Family Cites Families (19)
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US4281550A (en) * | 1979-12-17 | 1981-08-04 | North American Philips Corporation | Curved array of sequenced ultrasound transducers |
JPS5711648A (en) * | 1980-06-27 | 1982-01-21 | Matsushita Electric Ind Co Ltd | Ultrasonic probe |
DE3732131A1 (de) * | 1987-09-24 | 1989-04-06 | Wolf Gmbh Richard | Fokussierender ultraschallwandler |
FR2642640B1 (fr) | 1989-02-08 | 1991-05-10 | Centre Nat Rech Scient | Procede et dispositif de focalisation d'ultrasons dans les tissus |
GB8912782D0 (en) * | 1989-06-02 | 1989-07-19 | Udi Group Ltd | An acoustic transducer |
US5165414A (en) * | 1991-01-14 | 1992-11-24 | Hewlett-Packard Company | Pointing error compensation in large aperture annular arrays |
JPH0747079A (ja) | 1993-08-05 | 1995-02-21 | Toshiba Corp | 超音波治療装置 |
EP0689187B1 (fr) * | 1994-06-24 | 2002-01-02 | Advanced Technology Laboratories, Inc. | Réseau de transducteur ultrasonores de diagnostic avec focalisation en élévation |
US5677491A (en) * | 1994-08-08 | 1997-10-14 | Diasonics Ultrasound, Inc. | Sparse two-dimensional transducer array |
EP1041929A1 (fr) * | 1997-12-22 | 2000-10-11 | Klaus Vammen | Propriete et appareil pour etudier les proprietes des os a l'aide d'ultrasons |
US6613004B1 (en) * | 2000-04-21 | 2003-09-02 | Insightec-Txsonics, Ltd. | Systems and methods for creating longer necrosed volumes using a phased array focused ultrasound system |
US6543272B1 (en) * | 2000-04-21 | 2003-04-08 | Insightec-Txsonics Ltd. | Systems and methods for testing and calibrating a focused ultrasound transducer array |
JP2004147719A (ja) | 2002-10-29 | 2004-05-27 | Toshiba Corp | 超音波照射装置 |
CN101422376B (zh) * | 2003-01-23 | 2012-05-23 | 株式会社日立医药 | 超声波探头与超声波诊断设备 |
JP4319427B2 (ja) | 2003-02-28 | 2009-08-26 | 株式会社東芝 | 医用超音波照射装置 |
US8016757B2 (en) * | 2005-09-30 | 2011-09-13 | University Of Washington | Non-invasive temperature estimation technique for HIFU therapy monitoring using backscattered ultrasound |
FR2903316B1 (fr) * | 2006-07-05 | 2009-06-26 | Edap S A | Sonde de therapie et appareil de therapie incluant une telle sonde |
FR2903616B1 (fr) | 2006-07-13 | 2008-10-31 | Veolia Eau Cie Generale Des Ea | Dispositif et procede pour la capture de substances generatrices d'odeurs et/ou de gouts presentes dans l'eau circulant dans un reseau. |
US20120191020A1 (en) * | 2011-01-25 | 2012-07-26 | Shuki Vitek | Uniform thermal treatment of tissue interfaces |
-
2011
- 2011-03-30 FR FR1152657A patent/FR2973550B1/fr active Active
-
2012
- 2012-03-15 CN CN201280016559.2A patent/CN103650031B/zh active Active
- 2012-03-15 JP JP2014501685A patent/JP6100751B2/ja active Active
- 2012-03-15 WO PCT/FR2012/050544 patent/WO2012131212A1/fr active Application Filing
- 2012-03-15 US US14/007,918 patent/US9936969B2/en active Active
- 2012-03-15 EP EP12714787.4A patent/EP2691948B1/fr active Active
-
2018
- 2018-02-21 US US15/900,883 patent/US20180177519A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2012131212A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN103650031A (zh) | 2014-03-19 |
EP2691948B1 (fr) | 2015-03-11 |
CN103650031B (zh) | 2016-08-31 |
US20140180320A1 (en) | 2014-06-26 |
WO2012131212A1 (fr) | 2012-10-04 |
JP2014522245A (ja) | 2014-09-04 |
US9936969B2 (en) | 2018-04-10 |
FR2973550A1 (fr) | 2012-10-05 |
US20180177519A1 (en) | 2018-06-28 |
JP6100751B2 (ja) | 2017-03-22 |
FR2973550B1 (fr) | 2015-12-04 |
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