EP0100860A1 - Appareil de balayage par ultrasons - Google Patents

Appareil de balayage par ultrasons Download PDF

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Publication number
EP0100860A1
EP0100860A1 EP83106515A EP83106515A EP0100860A1 EP 0100860 A1 EP0100860 A1 EP 0100860A1 EP 83106515 A EP83106515 A EP 83106515A EP 83106515 A EP83106515 A EP 83106515A EP 0100860 A1 EP0100860 A1 EP 0100860A1
Authority
EP
European Patent Office
Prior art keywords
ultrasound
ultrasonic
transducer
heads
drive
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
Application number
EP83106515A
Other languages
German (de)
English (en)
Other versions
EP0100860B1 (fr
Inventor
Walter Hetz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0100860A1 publication Critical patent/EP0100860A1/fr
Application granted granted Critical
Publication of EP0100860B1 publication Critical patent/EP0100860B1/fr
Expired legal-status Critical Current

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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
    • G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
    • G10K11/355—Arcuate movement

Definitions

  • the invention relates to an ultrasound device for sector scanning, with an applicator housing for an ultrasound transmission / reception system and associated drive and control means, wherein the ultrasound transmission / reception system consists of a pivotable ultrasound head with at least one transducer element, which is around a swivel axis can be swiveled periodically within a predeterminable angular range.
  • the sector scan method is used in particular for cardiological examinations, since there is an acoustic window between the ribs on the one hand intercostal) and above the clavicle on the other hand (suprasternal), through which ultrasound can be irradiated.
  • Sector scanners are known in a variety with different technical training. The technical development is aimed at developing applicators that are as small and easy to handle as possible.
  • a sector scan can be generated mechanically or electronically.
  • an ultrasound head with a reception / transducer system is periodically pivoted back and forth, while in the second case an electronic beam deflection based on the principle of the "phased array" delivers the corresponding scan area.
  • the drive for tilting the ultrasound head can take place, for example, via an eccentric with an associated push crank.
  • the transducer can also be used as a rotary roller are designed with a plurality of individual oscillators attached to the circumference, which individual oscillators are cyclically switched on and off successively when the roller rotates.
  • the object of the invention is therefore to provide an ultrasound device for sector scanning, which is application-friendly and offers the user advantages in handling compared to the previously known sector scanners.
  • the object is achieved in that two in applications by means of a single drive position opposing ultrasound heads, the transducer elements of which differ from one another, can be driven in such a way that during a scanning movement with ultrasound radiation from the one transducer, the other transducer executes an opposite pivoting movement for the purpose of compensating mechanical forces.
  • the ultrasound device thus advantageously on the one hand compensates for the inertia forces which inevitably occur in mechanically driven sector scanners; on the other hand, the ultrasound device simultaneously has two ultrasound heads with different working frequencies, which can be easily brought into the application position if required.
  • an examiner can guide the applicator with a guide part in the manner of a pen and thus position it precisely.
  • the ultrasound head to be applied can be moved in all directions and can be applied well in cardiological examinations.
  • the new spatial shape of the applicator housing with the guide part allows for excellent handling when swiveling the guide part when applied in the intercostal or also in the suprasternal space. The latter is only possible with difficulty with the devices of the prior art.
  • the design of the movement system in two forms is preferably implemented by an electromagnetic drive.
  • an electromagnetic drive By using a double armature, corresponding windings and magnetic elements on the ultrasonic heads, complicated mechanics can be avoided and the applicator can be kept small.
  • 1 denotes the applicator housing. This is approximately cylindrical in shape and has caps 2 and 3 on the top and bottom as approximately symmetrical spherical cap parts.
  • the dome parts consist of flexible, but inherently stable plastic, for example made of polyethylene or polypropylene. They each complete a scanner with the associated liquid flow path.
  • the applicator housing 1 with the two scanner caps 2 and 3 is extremely compact. This allows the applicator to be applied, for example, between the ribs of a patient. Sector scans for sectional representations of the heart can thus be generated in particular.
  • the applicator housing 1 is enclosed in the middle on both sides by a guide part 4.
  • a connector for the applicator housing 2 with an axis of rotation 5 is attached to the guide part 4 proximally.
  • the housing part 1 is essentially made of plastic and accommodates an electromagnetic drive with a yoke, coil and rotating armature.
  • the housing 1 is rotatably or tiltably supported on both sides in the guide housing 4 by means of a bearing device, so that the applicator housing 1 can optionally be brought into the suitable application position using one of the scanners.
  • 20 and 30 mean two ultrasound heads, which are each mounted in housing 1 so as to be pivotable about a predeterminable angular range about axes of rotation A and B, respectively.
  • the ultrasonic transducers 21 and 31 are attached to the ultrasound head 20 and 30 on the application side in each case via damping bodies (not shown).
  • Rotary armatures 22 and 32 are formed by the ultrasound heads 20 and 30, respectively, which have permanent magnet layers 23 and 33 on the back. Permanent magnets of this type are formed, for example, on the basis of rare earths and can be applied in layers to the armature parts 22 and 32. They are magnetized according to the respective requirement, for example in a circumferential sequence of approximately 90 ° with a north pole, a south pole and again a north pole.
  • the ultrasound heads 20 and 30 are closed off by the caps 2 and 3 already mentioned.
  • an electromagnet is attached between the two pivotably held ultrasound heads 20 and 30, with which the movement of both ultrasound heads can be activated at the same time.
  • the electromagnet consists of stacked transformer sheets 40, which are punched out in such a way that they each pole pieces forming end 'for the rear side formed by the ultrasonic transducers anchor surfaces.
  • a yoke is formed with recesses 41 and 42 through which the windings of a coil 43 run.
  • the required, dynamically changeable magnetic field can be generated with the described electromagnet.
  • the armature is consequently moved in such a way that a pivoting movement is carried out when the field changes.
  • One of the two transducers 21 and 31 can be activated simultaneously for ultrasound radiation or reception.
  • the electrical wiring and signal processing units are not shown in the present figures. However, it can be seen that there is sufficient space in the guide part 4 for accommodating such units. This means that the actual applicator housing 1 can be kept extremely compact to the desired extent.
  • the structural design of the electromagnet with yoke 40 and coil 41 can also be seen. It becomes particularly clear here the construction of the ultrasound head 20 as an armature with a permanent magnet: a web 27 is attached to the axis of rotation 26. The permanent magnet layer 23 is located on this.
  • the armature part 22 is adapted to the shape of the pole shoes of the yoke 40 and is located in a shaft-like cutout of the actual plastic housing.
  • the anchor part also has a metal tab 28 on the side.
  • a corresponding metal flag 29 is still located on the in-wall housing shaft.
  • a rotary capacitor is thus formed, so to speak, which can be used to detect the position of the rotary armature and thus also for control purposes.
  • the second ultrasound head 30 is also constructed with respect to the armature and the capacitive measuring element.
  • the function of the pivotable ultrasound head with a capacitive measuring element becomes clearer from the perspective illustration in FIG.
  • the reference symbols for the transducer element pivot axis and the permanent magnet layer have already been explained above.
  • the two metal lugs 28 and 29 face each other, so that a capacitor is formed.
  • the effective area is changed, with which every position of the transducer can be detected.
  • an electromagnetic drive is particularly suitable for a compact device structure in the sense of the invention.
  • an applicator housing with two ultrasound heads located distally opposite one another can also be designed with a mechanical drive.
  • the favorable properties with regard to application and handling can be retained.
  • an ent speaking applicator with mechanical drive thus falls under the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
EP83106515A 1982-07-19 1983-07-04 Appareil de balayage par ultrasons Expired EP0100860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3226916 1982-07-19
DE19823226916 DE3226916A1 (de) 1982-07-19 1982-07-19 Ultraschall-geraet fuer sektorabtastung

Publications (2)

Publication Number Publication Date
EP0100860A1 true EP0100860A1 (fr) 1984-02-22
EP0100860B1 EP0100860B1 (fr) 1986-05-07

Family

ID=6168742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106515A Expired EP0100860B1 (fr) 1982-07-19 1983-07-04 Appareil de balayage par ultrasons

Country Status (4)

Country Link
US (1) US4530362A (fr)
EP (1) EP0100860B1 (fr)
JP (1) JPS5928952A (fr)
DE (2) DE3226916A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0355235Y2 (fr) * 1985-02-18 1991-12-09
US4869257A (en) * 1985-06-03 1989-09-26 Picker International, Inc. Ultrasonic mechanical sector scanning transducer probe assembly
US4773426A (en) * 1985-06-03 1988-09-27 Picker International, Inc. Ultrasonic mechanical sector scanning transducer probe assembly
EP0219988B1 (fr) * 1985-09-27 1993-10-20 Mentor O & O Inc. Instrument manuel autonome à ultrason pour usage ophtalmologique
JP2618920B2 (ja) * 1987-09-18 1997-06-11 オリンパス光学工業株式会社 超音波内視鏡
US4868476A (en) * 1987-10-30 1989-09-19 Hewlett-Packard Company Transducer with integral memory
US5070734A (en) * 1988-06-15 1991-12-10 Matsushita Electric Industrial Co., Ltd. Ultrasonic diagnostic apparatus
US5315512A (en) * 1989-09-01 1994-05-24 Montefiore Medical Center Apparatus and method for generating image representations of a body utilizing an ultrasonic imaging subsystem and a three-dimensional digitizer subsystem
US5100318A (en) * 1990-04-13 1992-03-31 Periosonics, Inc. Ultrasonic method and apparatus for measuring the periodontal pocket
US5465724A (en) * 1993-05-28 1995-11-14 Acuson Corporation Compact rotationally steerable ultrasound transducer
US5558623A (en) * 1995-03-29 1996-09-24 Rich-Mar Corporation Therapeutic ultrasonic device
USD403421S (en) 1995-03-29 1998-12-29 Rich-Mar Corporation Ultrasonic applicator
GB9620229D0 (en) * 1996-09-27 1996-11-13 Graphers Systems Ltd Apparatus for measuring the quality of spot welds
US6698279B1 (en) 1996-10-23 2004-03-02 Ultrasonics And Magnetics Corporation Method and apparatus for testing the integrity of railroad locomotive wheels and railroad car wheels
US6546803B1 (en) 1999-12-23 2003-04-15 Daimlerchrysler Corporation Ultrasonic array transducer
US7132617B2 (en) * 2002-02-20 2006-11-07 Daimlerchrysler Corporation Method and system for assessing quality of spot welds
JP2005533456A (ja) * 2002-07-18 2005-11-04 メジャメント スペシャリティーズ インク 電子機器用の超音波トランスデューサ
US10945706B2 (en) 2017-05-05 2021-03-16 Biim Ultrasound As Hand held ultrasound probe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2027197A (en) * 1978-07-18 1980-02-13 Diasonics Inc Ultrasonic imaging apparatus
DE2941865A1 (de) * 1979-10-16 1981-05-14 Siemens AG, 1000 Berlin und 8000 München Ultraschallgeraet fuer sektorabtastung
DE2945586A1 (de) * 1979-11-12 1981-05-21 Kraftwerk Union AG, 4330 Mülheim Mehrfachhalterung fuer pruefkoepfe, insbesondere ultraschall-pruefkoepfe
EP0051927A1 (fr) * 1980-10-16 1982-05-19 Dymax Corporation Transducteur ultrasonore

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030347A (en) * 1975-10-31 1977-06-21 Electrical Power Research Institute Biaxial capacitance strain transducer
US4264162A (en) * 1978-06-21 1981-04-28 Canon Kabushiki Kaisha Drive system for electromagnetically driven shutter
AT358714B (de) * 1979-01-25 1980-09-25 Kretztechnik Gmbh Ultraschallgeraet zur durchfuehrung von unter- suchungen nach dem schnittbildverfahren
US4241324A (en) * 1979-09-28 1980-12-23 Mcgraw-Edison Company Magnetic core for electrical transformers
JPS5672423A (en) * 1979-11-16 1981-06-16 Canon Inc Electromagnetic-drive slit exposure shutter
JPS56152635A (en) * 1980-04-28 1981-11-26 Olympus Optical Co Ultrasonic diagnosis apparatus
US4315435A (en) * 1980-06-30 1982-02-16 Second Foundation Dual scan ultrasonic scanner
JPS5771113A (en) * 1980-10-22 1982-05-01 Hitachi Ltd Three phase three leg core
US4433691A (en) * 1981-10-05 1984-02-28 Honeywell Inc. Moving torque coil oscillatory drive member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2027197A (en) * 1978-07-18 1980-02-13 Diasonics Inc Ultrasonic imaging apparatus
DE2941865A1 (de) * 1979-10-16 1981-05-14 Siemens AG, 1000 Berlin und 8000 München Ultraschallgeraet fuer sektorabtastung
DE2945586A1 (de) * 1979-11-12 1981-05-21 Kraftwerk Union AG, 4330 Mülheim Mehrfachhalterung fuer pruefkoepfe, insbesondere ultraschall-pruefkoepfe
EP0051927A1 (fr) * 1980-10-16 1982-05-19 Dymax Corporation Transducteur ultrasonore

Also Published As

Publication number Publication date
JPS5928952A (ja) 1984-02-15
EP0100860B1 (fr) 1986-05-07
DE3363381D1 (en) 1986-06-12
DE3226916A1 (de) 1984-01-19
US4530362A (en) 1985-07-23

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