Open access superconducting MRI magnet

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5412363
SERIAL NO

08259914

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An open access MRI magnet includes a ferromagnetic frame open on at least two sides and having upper and lower end plates and at least two support columns. A superconducting coil assembly is mounted to each end plate for generating a magnetic flux field in a patient receiving area located between the end plates. Each superconducting coil assembly includes a toroidal vacuum tight vessel, insulation, and one or more temperature shields mounted within the vacuum tight vessel. One or more coils of superconducting wire is wound within the vacuum vessel, and is coupled to a power source and to a persistent switch for maintaining a constant flow of current with no power consumption. A return path for the flux is provided by the end plates and support posts of the frame. The superconducting coils, the thermal shields, and the persistent switch are cooled by a cryocooler, by means of conduction through solid thermal conductors or by a combination of conduction and convection, through a fluid cooling circuit, without the consumption of a liquid cryogen.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOSHIBA MEDICAL SYSTEMS CORPORATIONTOKYO1790

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Breneman, Bruce C San Diego, CA 17 443
Hsu, Yen-Hwa L Solana Beach, CA 6 218
Sarwinski, Raymond E San Diego, CA 15 423

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
KONINKLIJKE PHILIPS ELECTRONICS N V (1)
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GENERAL ELECTRIC COMPANY (12)
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Other [Check patent profile for assignment information] (2)
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Fonar Corporation (44)
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BRUKER BIOSPIN AG (3)
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OXFORD INSTRUMENTS SUPERCONDUCTIVITY LIMITED (2)
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HITACHI, LTD. (2)
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MASSACHUSETTS INSTITUTE OF TECHNOLOGY (2)
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MAGNEVU (2)
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Picker International, Inc. (1)
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AMERICAN SUPERCONDUCTOR CORPORATION (1)
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MITSUBISHI ELECTRIC CORPORATION (2)
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NORTHROP GRUMMAN CORPORATION (1)
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* Cited By Examiner