EP0089131A2 - Chambre de transmission d'ultrason remplie avec fluide de basse pression - Google Patents

Chambre de transmission d'ultrason remplie avec fluide de basse pression Download PDF

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Publication number
EP0089131A2
EP0089131A2 EP83300990A EP83300990A EP0089131A2 EP 0089131 A2 EP0089131 A2 EP 0089131A2 EP 83300990 A EP83300990 A EP 83300990A EP 83300990 A EP83300990 A EP 83300990A EP 0089131 A2 EP0089131 A2 EP 0089131A2
Authority
EP
European Patent Office
Prior art keywords
chamber
fluid
filled
housing
low pressure
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.)
Withdrawn
Application number
EP83300990A
Other languages
German (de)
English (en)
Other versions
EP0089131A3 (fr
Inventor
Bayard G. Gardineer
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.)
Technicare Corp
Original Assignee
Technicare 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 Technicare Corp filed Critical Technicare Corp
Publication of EP0089131A2 publication Critical patent/EP0089131A2/fr
Publication of EP0089131A3 publication Critical patent/EP0089131A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Definitions

  • Ultrasound imaging apparatus for scanning e.g. the human body are known in the art.
  • a typical apparatus uses a fluid-filled chamber to transmit ultrasonic beams and their reflections to and from the transducer and the body being scanned. Any air bubbles present in the fluid-filled chamber disrupt the transmission of the ultrasound beams and distort an image of the reflected beams.
  • the fluid seal of the chamber will leak over time, permitting the formation of air bubbles. It is believed that fluid leakage reduces the pressure in the chamber allowing entrained air in the remaining fluid to form air bubbles. Further reduction of the pressure produces air filled voids. This results in the constant need to monitor for air bubbles formation and to refill the chamber; both of which limit the scan time of the apparatus.
  • the present invention comprises providing the fluid-filled chamber of an ultrasound beam transmitting apparatus with an adjustable effective volume to maintain a low pressure head in the chamber and prevent air bubble formation therein.
  • additional reservoirs of fluid may be connected to the chamber, and the effective volume and pressure of the fluid-filled chamber adjusted by changing the volume of the additional fluid reservoirs.
  • the additional reservoirs may be totally contained within the housing of the ultrasound apparatus or may be separable therefrom and may comprise an addition to an existing apparatus.
  • the reservoir may incorporate already existing fluid reservoirs within an existing system e.g. means for regulating fluid pressure within the chamber according to fluctuations in atmospheric pressure.
  • the adjustable volume of the reservoir allows the fluid in the chamber to be replenished without disrupting the use of the apparatus.
  • the reservoir When permanently contained within the housing of the apparatus, the reservoir may comprise a bladder or rolling diaphragm which is pressurized preferably to 4-5 pounds per square inch. Pressure may be maintained on the diaphragm by means of a piston urged against the diaphragm by a spring mounted on the housing.
  • the volume of both the reservoir contained within the housing or the separable reservoir for attachment to the chamber may be varied by operator adjustment means which may comprise a turn screw urging a piston against the reservoir.
  • the use of the pressurized reservoir of additional fluid substantially increases the time period during which the scanning apparatus may be used before refilling of the chamber or reservoir.
  • the chamber is initially filled with fluid and may be replenished by refilling the reservoir through a duck-billed check valve, which permits accurate pressurization of the chamber.
  • the chamber may be provided with a resealable fluid tap to allow bubbles in the chamber to be expelled therethrough.
  • the preferred embodiment of the present invention is depicted in Figure 1 where the ultrasound apparatus is shown generally at 10.
  • the apparatus comprises a housing 12 containing a fluid-filled chamber 14, transducer 16 and reflecting means 18 are mounted within the chamber.
  • the apparatus further comprises a transducer, and option reflecting means to transmit and/or receive ultrasonic beams through the fluid-filled chamber.
  • the fluid-filled chamber is connected as by passage 20 to a fluid reservoir 22 containing additional fluid.
  • the fluid reservoir may be constructed of a rolling diaphragm 24 and may be pressurized by a piston 26 urged against the diaphragm by a spring 28 mounted to the housing.
  • the reservoir may comprise a piston, bladder, or hydraulic accumulator or other construction that produces a change in volume in response to a change in pressure.
  • operator adjustment means such as a preloaded screw may be provided to urge the piston against the diaphragm.
  • the fluid within the reservoir 22 replenishes the fluid in the main chamber 14 and maintains a low pressure head thereby preventing the formation of air bubbles, and compensates for voids created by leakage.
  • Initial filling and subsequent refilling of the chamber is accomplished through a one way valve, such as the duck-billed check valve 30.
  • An opening 32 in the chamber with a seal screw 34 or other removable elastomeric seal allows removal of any bubbles in the chamber.
  • the apparatus may also be provided with an opening 36 to the passage 20, with a removable elastomeric seal 38 to allow purging of air during the fill procedure.
  • FIG. 2 illustrates an alternative embodiment of the present invention wherein an additional fluid reservoir is provided in a second chamber 100 which may be separably connected to the fluid-filled chamber of an existing ultrasound apparatus.
  • the apparatus shown generally at 1 01 comprises a housing 102 and a fluid-filled chamber 104. As illustrated, the chamber has a transducer means 106 and reflecting means 108 disposed therein.
  • the apparatus also has existing fluid reservoirs, e.g. bellows 110 and 112 provided to allow adjustment for the fluid pressure according to atmospheric pressure. When the bellows are filled, buttons 111 and 113 are visible. Refilling of the chamber is necessary when the buttons disappear from view.
  • Additional fluid reservoir 100 is adapted to connect with the main chamber to replenish the fluid therein and maintain a low pressure head in the chamber.
  • the volume of the reservoir may be adjusted by means of a piston 122 urged against the reservoir. Preferably, adjustment of the piston is continued until the buttons 111 and 113 reappear.
  • Numerous means, known to those skilled in the art, may be used to move the piston against the reservoir; and the screw cap 124 illustrated in Figure 2 is one such means.
  • the fluid-filled bellows are connected to the main chamber by ducts 114 and l16, and this embodiment of the invention further encompasses utilizing the fluid in bellows 110 and 112 together with the additional reservoir 100 to maintain the fluid in the chamber thereby increasing the effective volume of the second chamber.
  • removable elastomeric seals may be provided at 118 and 120 to allow purging of air in the bellows during the fill procedure.
  • an opening in the chamber, 126, provided with seal screw 128 or other removable elastomeric seal will allow removal of bubbles in the chamber.
  • the chamber 100 may be refilled.
  • screw cap 124 may be loosened and piston 122 pulled out of chamber 100, and the chamber refilled directly.
  • the piston may be reset within the chamber, the screw cap refastened, and the chamber 104 and chamber 100 refilled through opening 126 or a duck-billed valve such as shown in Figure 1 at 30.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
EP83300990A 1982-02-26 1983-02-25 Chambre de transmission d'ultrason remplie avec fluide de basse pression Withdrawn EP0089131A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35291082A 1982-02-26 1982-02-26
US352910 1982-02-26

Publications (2)

Publication Number Publication Date
EP0089131A2 true EP0089131A2 (fr) 1983-09-21
EP0089131A3 EP0089131A3 (fr) 1984-05-30

Family

ID=23386981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83300990A Withdrawn EP0089131A3 (fr) 1982-02-26 1983-02-25 Chambre de transmission d'ultrason remplie avec fluide de basse pression

Country Status (3)

Country Link
EP (1) EP0089131A3 (fr)
JP (1) JPS58165833A (fr)
AU (1) AU1165483A (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106292A2 (fr) * 1982-10-18 1984-04-25 General Electric Company Tête pour dispositif de balayage à ultrason ayant la possibilité de remplacer le fluide
US4572200A (en) * 1984-04-13 1986-02-25 Indianapolis Center For Advanced Research Intraoperative scanner
US4664121A (en) * 1984-04-13 1987-05-12 Indianapolis Center For Advanced Research Intraoperative scanner
US4784148A (en) * 1986-02-21 1988-11-15 Johnson & Johnson Ultrasonic transducer probe expansion chamber
WO2005094690A1 (fr) * 2004-04-02 2005-10-13 Koninklijke Philips Electronics, N.V. Systeme de compensation de volume a sonde ultrasonique
WO2005096266A1 (fr) * 2004-04-02 2005-10-13 Koninklijke Philips Electronics, N.V. Sonde ultrasonique a chambres a fluide multiples
EP2000097A1 (fr) * 2006-03-30 2008-12-10 Nihon Dempa Kogyo Co., Ltd. Sonde a ultrasons
US7481115B2 (en) 2003-03-31 2009-01-27 Panasonic Corporation Ultrasonic probe
EP2058029A1 (fr) * 2006-08-24 2009-05-13 Chongqing Ronghai Medical Ultrasound Industry Ltd. Dispositif thérapeutique à ultra-sons et système correspondant utilisant ce dispositif
CN102988083A (zh) * 2011-09-16 2013-03-27 深圳优瑞科生物电子有限公司 一种机械3d探头
EP2629090A3 (fr) * 2012-02-15 2015-12-02 Nihon Dempa Kogyo Co., Ltd. Transducteur ultrasonique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04325146A (ja) * 1991-04-25 1992-11-13 Matsushita Electric Ind Co Ltd 機械走査型超音波探触子

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968459A (en) * 1975-01-29 1976-07-06 Sperry Rand Corporation Ultrasonic driver transducer
US4181120A (en) * 1976-04-23 1980-01-01 Tokyo Shibaura Electric Co., Ltd. Vessel for ultrasonic scanner
US4316271A (en) * 1981-01-14 1982-02-16 Honeywell Inc. Purging and expansion mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3968459A (en) * 1975-01-29 1976-07-06 Sperry Rand Corporation Ultrasonic driver transducer
US4181120A (en) * 1976-04-23 1980-01-01 Tokyo Shibaura Electric Co., Ltd. Vessel for ultrasonic scanner
US4316271A (en) * 1981-01-14 1982-02-16 Honeywell Inc. Purging and expansion mechanism

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106292A2 (fr) * 1982-10-18 1984-04-25 General Electric Company Tête pour dispositif de balayage à ultrason ayant la possibilité de remplacer le fluide
EP0106292A3 (en) * 1982-10-18 1984-07-04 General Electric Company Ultrasonic sector scanner having fluid replacement capability
US4572200A (en) * 1984-04-13 1986-02-25 Indianapolis Center For Advanced Research Intraoperative scanner
US4664121A (en) * 1984-04-13 1987-05-12 Indianapolis Center For Advanced Research Intraoperative scanner
US4784148A (en) * 1986-02-21 1988-11-15 Johnson & Johnson Ultrasonic transducer probe expansion chamber
US7481115B2 (en) 2003-03-31 2009-01-27 Panasonic Corporation Ultrasonic probe
WO2005096266A1 (fr) * 2004-04-02 2005-10-13 Koninklijke Philips Electronics, N.V. Sonde ultrasonique a chambres a fluide multiples
WO2005094690A1 (fr) * 2004-04-02 2005-10-13 Koninklijke Philips Electronics, N.V. Systeme de compensation de volume a sonde ultrasonique
US7484412B2 (en) 2004-04-02 2009-02-03 Koninklijke Philips Electronics N.V. Ultrasound probe with multiple fluid chambers
CN100518663C (zh) * 2004-04-02 2009-07-29 皇家飞利浦电子股份有限公司 超声探测头的体积补偿系统
US8353838B2 (en) 2004-04-02 2013-01-15 Koninklijke Philips Electronics N.V. Ultrasonic probe volume compensation system
EP2000097A1 (fr) * 2006-03-30 2008-12-10 Nihon Dempa Kogyo Co., Ltd. Sonde a ultrasons
EP2000097A4 (fr) * 2006-03-30 2009-04-22 Nihon Dempa Kogyo Co Sonde a ultrasons
US7963167B2 (en) 2006-03-30 2011-06-21 Nihon Dempa Kogyo Co., Ltd. Ultrasonic probe
EP2058029A1 (fr) * 2006-08-24 2009-05-13 Chongqing Ronghai Medical Ultrasound Industry Ltd. Dispositif thérapeutique à ultra-sons et système correspondant utilisant ce dispositif
EP2058029A4 (fr) * 2006-08-24 2010-09-29 Chongqing Ronghai Medical Ultrasound Industry Ltd Dispositif thérapeutique à ultra-sons et système correspondant utilisant ce dispositif
CN102988083A (zh) * 2011-09-16 2013-03-27 深圳优瑞科生物电子有限公司 一种机械3d探头
EP2629090A3 (fr) * 2012-02-15 2015-12-02 Nihon Dempa Kogyo Co., Ltd. Transducteur ultrasonique

Also Published As

Publication number Publication date
AU1165483A (en) 1983-09-01
JPS58165833A (ja) 1983-09-30
JPH0336532B2 (fr) 1991-05-31
EP0089131A3 (fr) 1984-05-30

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Inventor name: GARDINEER, BAYARD G.