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US5076275A Expired / Lapsed US ⏱️ 0.0 years remaining

Viewing system inert to magnetic flux

Assignee: RELAXATION Inc
•
Filing: 1991-01-04
•
Granted: 1991-12-31
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Expires: 2011-01-04
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Abstract

Abstract A viewing system for entertaining patients confined within a magnetic imaging device for prolonged periods of time. A remote source of moving video images feeds its output to a liquid crystal display projector that is positioned in close physical proximity to and within the magnetic field of the imaging device. The projector projects the moving video images onto a wooden screen that is also positioned in close physical proximity to and within the magnetic field of the imaging device. The screen is in substantial axial alignment with the longitudinal axis of the imaging device. The patient within the tube may wear spectacles that bend the light emanating from the projection screen into the patient's eyes so that the moving image on the screen can be viewed by a patient lying on his or her back and gazing upwardly at right angles to the projection screen. Alternatively, a non-metallic mirror member may be positioned within the tube so that the patient need not wear the special spectacles. Audio signals are delivered to the patient through air hoses connected to a headphone. The air hoses are fed audio signals by associated conical shaped members that are positioned within associated tubes, each of which has a first end that is closed by conventional speakers that are driven by selected sources of audio signals.

Inventors

  • 👤 Ronen Bechor
  • 👤 David Bekhor

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:35
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/283; A; A61; A61B; A61B5/00; A61B5/05; A61B5/055; G02; G02C; G02C7/00; G02C7/14

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 127 words
A viewing system for a patient disposed in a recumbent position within a magnetic resonance imaging device having a magnetic field, comprising: a magnetically inert projection screen; said magnetically inert projection screen positioned external to said magnetic resonance imaging device but within the magnetic field of said device; said magnetically inert projection screen being positioned in substantial axial alignment with a longitudinal axis of said device; image reflecting means inert to said magnetic field positioned within said device; and magnetically inert projector means positioned external to said magnetic resonance imaging device but within said magnetic field for projecting a moving video image onto said magnetically inert projection screen; said image reflecting means adapted to reflect light from said moving video image into the eyes of said patient.
Claim 2
Dependent Claim 127 words
A viewing system for a patient disposed in a recumbent position within a magnetic resonance imaging device having a magnetic field, comprising: a magnetically inert projection screen; said magnetically inert projection screen positioned external to said magnetic resonance imaging device but within the magnetic field of said device; said magnetically inert projection screen being positioned in substantial axial alignment with a longitudinal axis of said device; image reflecting means inert to said magnetic field positioned within said device; and magnetically inert projector means positioned external to said magnetic resonance imaging device but within said magnetic field for projecting a moving video image onto said magnetically inert projection screen; said image reflecting means adapted to reflect light from said moving video image into the eyes of said patient.
Claim 3
Dependent Claim 30 words
The system of claim 1, further comprising means inert to said magnetic field for introducing audio signals from a source of audio signals external to said device into said device.
Claim 4
Dependent Claim 144 words
The system of claim 2, wherein said means for introducing audio signals into said device includes at least one earphone means adapted to abuttingly engage an ear of said patient within said tube, at least one speaker member in electrical communication with a preselected source of audio signals, at least one tube having a closed end and an open end, said at least one speaker being positioned at said open end of said at least one tube to close said open end, a conical member concentrically positioned within said tube, an aperture formed in the closed end of said tube, said conical member being confluent with said aperture, and an air tube disposed in interconnecting relation between said at least one earphone and said aperture so that sound emanating from said speaker is transmitted through said air tube to said at least one earphone.
Claim 5
Dependent Claim 18 words
The system of claim 1, wherein said magnetically inert projector means is a liquid crystal display video projector.
Claim 6
Dependent Claim 35 words
The system of claim 1, further comprising source means for delivering audio and video signals to said projector means, said source means being positioned remote from the magnetic field of said magnetic resonance imaging device.
Claim 7
Dependent Claim 13 words
The system of claim 5, wherein said source means is a television set.
Claim 8
Dependent Claim 14 words
The system of claim 5, wherein said source means is a video cassette recorder.

References Cited (Backward Citations)

US4804261A Cited
US4903703A Cited
US4981137A Cited
US4901141A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-12-30 1995-07-01 1995-12-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-12-30 1999-07-01 1999-12-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-12-30 2003-07-01 2003-12-31 $7700.00 Window Closed / Lapsed

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