The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1982
Filed:
Oct. 31, 1980
David M Barrett, Brookfield, WI (US);
Paul M Stivender, Brookfield, WI (US);
Robert E Ueberfluss, Greendale, WI (US);
General Electric Company, Schenectady, NY (US);
Abstract
Angiography apparatus has an L-arm rotatable about a vertical axis and a U-arm mounted on the upstanding section of the L-arm for rotation about a horizontal axis. An X-ray source is at one end of the U-arm and image receptors including an image intensifier and a first film changer are at the other end to enable making posterior-anterior and anterior-posterior X-ray views at various angles relative to a patient who is located on the isocenter which is the intersection of the horizontal, vertical and X-ray beam axis. A second film changer for making lateral generally isocentric views is mounted within the U-arm on a stand that is movable along the horizontal U-arm axis to allow obtaining various distances between the image plane of the film and another X-ray source. The lateral changer is on a mechanism for shifting it vertically and longitudinally a limited amount and for rotating it with a motor so this changer will stay level until the U-arm has been tilted through a predetermined angle. After this angle is reached motorized rotation is discontinued and the lateral changer is allowed to rotate with the U-arm.