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257 records (took 0.024 seconds)

    81.
    发明专利
    未知

    公开(公告)号：DE69433198D1

    公开(公告)日：2003-11-06

    申请号：DE69433198

    申请日：1994-11-18

    Applicant: ADVANCED TECH LAB

    Inventor： GRUNER GEORGE P ,  FRASER JOHN D ,  NGUYEN LOC ,  POWELL SHERRY ,  SAVAGE TIMOTHY R

    IPC: G01N29/26 ,  A61B1/005 ,  A61B8/12 ,  G01Q10/00 ,  G01Q80/00 ,  G01Q90/00 ,  H04R1/02 ,  H04R17/00 ,  A61B1/00

    Abstract: A multiplane TEE probe is provided in which rotation of the ultrasonic transducer is motor controlled. The motor is controlled to rotate the transducer either clockwise or counterclockwise, and at either a high rotational speed or a low rotational speed. The motor is also automatically controlled to drive the transducer to a predetermined home position. The transducer tip of the probe is detachably connected to the gastroscope tube. An aluminum sheet is embedded in the acoustic lens in front of the transducer to dissipate heat which accumulates in the lens. The gastroscope tube includes an articulating section formed of a plurality of matching cylindrical links which form alternating pivot axes from one link to the next. The pivot range of each link with respect to an adjoining link is controlled by opposing limit stops orthogonally located with respect to the pivot points of the links. Preferably the limit stops are formed by a plurality of opposing and meshing fingers to provide the articulating section with high torsional stability. The articulating section is controlled from the handle of the probe, with the articulation limit stops located in the handle. The articulating section may be locked in a given bent position, but the lock will be overcome by the force of the esophagus against the transducer tip if the probe is withdrawn in a locked and bent position. When the articulating section is locked an indication signal is displayed on the handle of the probe and on the display of the ultrasound system.

    82.
    发明专利
    未知

    公开(公告)号：AT250890T

    公开(公告)日：2003-10-15

    申请号：AT94308544

    申请日：1994-11-18

    Applicant: ADVANCED TECH LAB

    Inventor： GRUNER GEORGE P ,  FRASER JOHN D ,  NGUYEN LOC ,  POWELL SHERRY ,  SAVAGE TIMOTHY R

    IPC: G01N29/26 ,  A61B1/005 ,  A61B8/12 ,  G01Q10/00 ,  G01Q80/00 ,  G01Q90/00 ,  H04R1/02 ,  H04R17/00 ,  A61B1/00

    Abstract: A multiplane TEE probe is provided in which rotation of the ultrasonic transducer is motor controlled. The motor is controlled to rotate the transducer either clockwise or counterclockwise, and at either a high rotational speed or a low rotational speed. The motor is also automatically controlled to drive the transducer to a predetermined home position. The transducer tip of the probe is detachably connected to the gastroscope tube. An aluminum sheet is embedded in the acoustic lens in front of the transducer to dissipate heat which accumulates in the lens. The gastroscope tube includes an articulating section formed of a plurality of matching cylindrical links which form alternating pivot axes from one link to the next. The pivot range of each link with respect to an adjoining link is controlled by opposing limit stops orthogonally located with respect to the pivot points of the links. Preferably the limit stops are formed by a plurality of opposing and meshing fingers to provide the articulating section with high torsional stability. The articulating section is controlled from the handle of the probe, with the articulation limit stops located in the handle. The articulating section may be locked in a given bent position, but the lock will be overcome by the force of the esophagus against the transducer tip if the probe is withdrawn in a locked and bent position. When the articulating section is locked an indication signal is displayed on the handle of the probe and on the display of the ultrasound system.

    84.
    发明专利
    未知

    公开(公告)号：DE69527685D1

    公开(公告)日：2002-09-12

    申请号：DE69527685

    申请日：1995-10-12

    Applicant: ADVANCED TECH LAB

    Inventor： ROBINSON MARSHALL T

    IPC: A61B8/00 ,  A61B8/06 ,  G01S7/52 ,  G01S15/89 ,  G06T1/00

    Abstract: The system has a device responsive to the reception of Doppler information signals producing sequences of Doppler estimation signals during intervals of Doppler signal acquisition. A device responsive to the signals produces signals for use in gaps between the Doppler estimation sequences. A device responsive to Doppler estimation signals preceding a gap derives a first sequence of gapfilling signals over an initial portion of the gap. A device responsive to Doppler estimation signals following the gap derives a second sequence of gapfilling signals over a concluding portion of the gap. A device responsive to the sequences of Doppler estimation signals and the intervening first and second sequences of gapfilling signals displays Doppler information.

    85.
    发明专利
    未知

    公开(公告)号：AT221752T

    公开(公告)日：2002-08-15

    申请号：AT95307243

    申请日：1995-10-12

    Applicant: ADVANCED TECH LAB

    Inventor： ROBINSON MARSHALL T

    IPC: A61B8/00 ,  A61B8/06 ,  G01S7/52 ,  G01S15/89 ,  G06T1/00

    Abstract: The system has a device responsive to the reception of Doppler information signals producing sequences of Doppler estimation signals during intervals of Doppler signal acquisition. A device responsive to the signals produces signals for use in gaps between the Doppler estimation sequences. A device responsive to Doppler estimation signals preceding a gap derives a first sequence of gapfilling signals over an initial portion of the gap. A device responsive to Doppler estimation signals following the gap derives a second sequence of gapfilling signals over a concluding portion of the gap. A device responsive to the sequences of Doppler estimation signals and the intervening first and second sequences of gapfilling signals displays Doppler information.

    86.
    发明专利
    未知

    公开(公告)号：DE69424636D1

    公开(公告)日：2000-06-29

    申请号：DE69424636

    申请日：1994-12-29

    Applicant: ADVANCED TECH LAB

    Inventor： ROBINSON BRENT STEPHEN ,  COOLEY CLIFFORD R ,  HWANG JUIN-JET ,  ENTREKIN ROBERT R

    IPC: G01S7/52 ,  G01S15/89

    Abstract: The ultrasonic diagnostic imaging system scans an image region to receive a number of spatially arranged lines of ultrasonic image information signals. The ultrasonic line information signals are used in an interpolater to interpolate one or more lines which are spatially interlineated between each pair of spatially adjoining received lines. The interpolated lines are produced using either the received RF or demodulated IF ultrasonic image information signals. The interpolated lines are produced prior to scan conversion, and preferably prior to nonlinear processing such as detection or log compression to reduce spatial aliasing artifacts. Pref the interpolater comprises a transversal filter of four taps which is responsive to received line information signals from a common range or depth or the interpolater may be adaptively responsive to motion to select samples for interpolation which would be spatially at the same range in the absence of motional effects.

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