초록 ▼

A turret system providing access to the interior of a vacuum vessel integral to a cryostat used for super conducting magnets in MRI systems. The system enabling the movable connection of a neck tube that provides access to the interior of the vacuum vessel when that tube is fixedly attached to the l

A turret system providing access to the interior of a vacuum vessel integral to a cryostat used for super conducting magnets in MRI systems. The system enabling the movable connection of a neck tube that provides access to the interior of the vacuum vessel when that tube is fixedly attached to the liquified gas container of the cryostat and moves with the liquified gas container, said moveable connection being affected by a supple member attaching said neck tube to said vacuum member, so that relative movement between said liquified gas container and said vacuum vessel does not over-stress said neck tube.

대표청구항 ▼

A turret arrangement in a cryostat used in magnetic resonance (MR) systems, said turret arrangement providing access to the interior of a vacuum vessel integral to the cryostat; said cryostat comprising: (a) said vacuum vessel shaped in the form of a horizontal cylinder having a bore extending there

A turret arrangement in a cryostat used in magnetic resonance (MR) systems, said turret arrangement providing access to the interior of a vacuum vessel integral to the cryostat; said cryostat comprising: (a) said vacuum vessel shaped in the form of a horizontal cylinder having a bore extending therethrough along the longitudinal axis of said cylinder; (b) said vacuum vessel containing a liquified gas container; (c) said liquified gas container providing the cooling necessary to obtain superconducting conditions and being shaped in the form of a horizontal cylinder having a bore therethrough that is coaxial with the bore of said vacuum vessel; (d) said container being caused to move within the vacuum vessel axially, radially and transversely due to temperature extremes within said cryostat; (e) a turret extending radially outward from said vacuum vessel; (f) a neck tube rigidly attached to and extending radially from said container toward the outside of said vacuum vessel through said turret; and (g) bearingless means for movably attaching said neck tube to said vacuum vessel whereby, when said container moves, stresses on said neck tube are minimized.