X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1991-06-21
1992-09-29
Church, Craig E.
X-ray or gamma ray systems or devices
Specific application
Absorption
378209, A61N 510
Patent
active
051519313
ABSTRACT:
A therapeutic bed of a radiotherapeutic system including a radioactive ray irradiator which radiates radioactive rays for treatment of an affected portion of a patient, includes a top board on which the patient to be inspected is laid, a support base rotatably mounted on a floor of a therapeutic room, an elevating mechanism supported by the support base and supporting the top board in a vertically elevating fashion, the elevating mechanism comprising a hydraulic link mechanism of two-stage link structure, a casing covering the elevating mechanism and being constructed to be vertically contractable and expandable in association with a vertical motion of the elevating mechanism, and a hydraulic device for driving the elevating mechanism. The hydraulic driving device is disposed apart from the elevating mechanism and particularly embedded in a floor of a therapeutic room. The driving device includes a hydraulic pressure supply unit, a hydraulic pressure transfer tube and a joint rotary member connected to the elevating mechanism. The radiotherapeutic system further includes an isocenter rotation mechanism for rotating an isocenter of the irraiator, the isocenter rotation mechanism is embedded in the floor of the therapeutic room together with the driving means. The therapeutic bed is particularly applicable to the treatment of a large affected portion of the patient ranging relatively wide area.
REFERENCES:
patent: 4132900 (1979-01-01), Smith et al.
Oba Toshio
Terashi Kozo
Church Craig E.
Kabushiki Kaisha Toshiba
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