Variable radiation collimator
Patent 4754147 Issued on June 28, 1988. Estimated Expiration Date: 
April 11, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 11, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3543384 Neutron collimator Rotatable superconducting cyclotron adapted for medical use Block for partially limiting a radiation beam, and a collimator comprising such blocks Patent #: 4534052 InventorsApplicationNo. 06/850486 filed on 04/11/1986US Classes:250/505.1, RADIATION CONTROLLING MEANS250/251, ELECTRICALLY NEUTRAL MOLECULAR OR ATOMIC BEAM DEVICES AND METHODS378/150, Variable378/152With linear leaf motionExaminersPrimary: Church, Craig E.Assistant: Berman, Jack I. Attorney, Agent or FirmInternational ClassesG21K 1/02 (20060101)A61N 5/10 (20060101) G21K 1/04 (20060101) AbstractA variable collimator 10 for shaping the cross-section of the beam 100 is described. The collimator relies upon rods 16 which are positioned around the beam axis a-a with the rod 16 axis b-b perpendicular to the beam axis. The rods are shaped by shaping member 24 which is cut to the shape of an area of a patient or other surface to be irradiated.Field of SearchRADIATION CONTROLLING MEANS | |
