US Patent No: 4,479,388

Number of patents in Portfolio can not be more than 2000

Ultrasound transducer and drive system

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An ultrasound probe includes an acoustical mirror that deflects an ultrasound beam generated by an ultrasound crystal toward an object under examination. The probe includes a thin flat motor whose rotor is controlled by a control system. The control system creates commutating signals that are applied to stator coils of the motor. An error signal that is related to the difference between the actual and desired positions of the object rotated by the motor is applied to the commutating signals to alter their amplitude or polarity to change the torque developed by the motor.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DYMAX CORPORATIONTORRINGTON, CT39

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matzuk, Terrance 536 Fourth St., Verona, PA 15147 10 320

Cited Art Landscape

Patent Info (Count) # Cites Year
 
HITACHI METALS, LTD. (1)
4,260,920 Multi-pole permanent magnet rotor 41 1978
 
Institut fur Flugnavigation der Universitat Stuttgart (1)
4,264,848 Device for the monitored control of a stepping motor 6 1978
 
ROCHESTER, NY. A CORP OF (1)
4,413,895 Electromagnetic actuator having a compliant armature 14 1982
 
ROCKWELL INTERNATIONAL CORPORATION (1)
4,366,422 Velocity sensing pulse pair servo apparatus 15 1980
 
Technicare Corporation (1)
4,330,874 Mechanical sector scanner head and power train 16 1980
 
UNITED TECHNOLOGIES CORPORATION (1)
4,187,455 Stepper motor feedback in position servo loop 4 1975
 
XEROX CORPORATION (1)
4,349,770 Electronic damping apparatus 18 1980

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Capistrano Labs, Inc. (5)
4,841,979 Ultrasonic prostate probe assembly 69 1988
5,329,194 Ultrasonic peripheral vascular probe assembly 11 1992
5,351,692 Laparoscopic ultrasonic probe 101 1993
5,402,789 Ultrasonic peripheral vascular probe assembly 13 1994
5,531,119 Ultrasound probe with bubble trap 26 1994
 
Indianapolis Center for Advanced Research (2)
4,572,200 Intraoperative scanner 2 1984
4,664,121 Intraoperative scanner 17 1985
 
KABUSHIKI KAISHA TOSHIBA (2)
4,579,122 Ultrasonic scanner 10 1984
5,088,495 Mechanical ultrasonic scanner 26 1990
 
North American Philips Corporation (2)
4,587,971 Ultrasonic scanning apparatus 7 1984
4,841,978 Ultrasonic scanning device with elastic pumper 5 1984
 
OLYMPUS OPTICAL CO., LTD. (2)
4,732,156 Ultrasonic endoscope 117 1986
4,936,307 Ultrasonic observation system and an ultrasonic endoscope system 35 1988
 
BOSTON SCIENTIFIC SCIMED, INC. (1)
5,373,849 Forward viewing imaging catheter 107 1993
 
Dymax Corporation (1)
4,671,292 Concentric biopsy probe 68 1985
 
FUJITSU LIMITED (1)
5,313,950 Ultrasonic probe 51 1993
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
4,868,476 Transducer with integral memory 39 1987
 
OLYMPUS NDT INC. (1)
8,286,491 Ultrasonic internal rotating inspection probe that self-eliminates air bubbles 0 2009
 
P.D. COOP, INC. (1)
5,844,140 Ultrasound beam alignment servo 81 1996
 
Picker International, Inc. (1)
4,773,426 Ultrasonic mechanical sector scanning transducer probe assembly 6 1985
 
SACKRISON, JAMES L. (1)
6,392,327 Sonic transducer and feedback control method thereof 7 2000
 
SBF HEALTHCARE PVT. LTD. (1)
8,657,732 Sequentially programmed magnetic field therapeutic system (SPMF) 0 2010
 
SCHAEVITZ ENGINEERING, U.S. (1)
4,980,598 Monolithic resonator for a vibrating beam accelerometer 17 1989
 
SIEMENS MEDICAL SOLUTIONS USA, INC. (1)
5,465,724 Compact rotationally steerable ultrasound transducer 41 1993
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (1)
5,606,975 Forward viewing ultrasonic imaging catheter 48 1994
 
The Boeing Company (1)
6,722,202 Method and apparatus for inspecting a structure utilizing magnetically attracted probes 35 2003
 
U.S. Philips Corporation (1)
4,942,597 X-ray scanner comprising a linear electric driving motor 8 1986
 
XTRILLLION, INC. (1)
6,780,153 Mechanism and system for 3-dimensional scanning of an ultrasound beam 9 2002