公开(公告)号：WO1987003107A1

公开(公告)日：1987-05-21

申请号：PCT/US1986002432

申请日：1986-11-14

Applicant: MEDRAD, INC.

Inventor： MEDRAD, INC. ,  JOHANSSON, Leif, A. ,  HELLMICK, Mark ,  WEBER, Otto

IPC: G03B42/02

CPC classification number: G03B42/045

Abstract: A film feeding mechanism for use during medical x-ray techniques, particularly angiography. Sheets of film (46) are fed sequentially at high speed into a film exposure device (34), in a manner so as to reduce damage to the films, including the build-up and discharge of static charge on the films. In the film exposure device (34), a free-floating lower clamping assembly (144) clamps each film (46) from the center of the film progressively outward towards its leading and trailing ends, to eliminate wrinkling of the film.

Abstract translation: 一种用于医疗x射线技术，特别是血管造影术的胶片输送机构。 膜（46）的片材以高速顺序进料到膜曝光装置（34）中，以便减少对膜的损伤，包括膜上静电荷的积聚和放电。 在薄膜曝光装置（34）中，自由浮动的下夹紧组件（144）将每个薄膜（46）从薄膜的中心逐渐向外朝向其前端和后端夹紧，以消除薄膜的起皱。

公开(公告)号：WO1987003386A1

公开(公告)日：1987-06-04

申请号：PCT/US1986002521

申请日：1986-11-24

Applicant: MEDRAD, INC.

Inventor： MEDRAD, INC. ,  JOHANSSON, Leif, A. ,  HELLMICK, Mark ,  WEBER, Otto

IPC: G03B42/02

CPC classification number: G03B42/021

Abstract: A programmable X-ray film changer for use, for example, in making angiograms, is provided with an improved pressure plate mechanism (56), feed and removal mechanism (88, 90, 92, 94) and control methodology. The improvements in combination permit a substantial reduction of the number of parts in the film changer resulting in increased reliability, a decrease in the expense of manufacture, and decreased weight. Furthermore the X-ray photographic film changer is arbitrarily orientable in space and independent of gravity feed mechanisms or the interference of gravity with respect to its operation. The improved pressure plate (56) is normally substantially flat and is bowed to form a convex surface by a pressure plate bowing mechanism (100, 102, 104, 106). Misfeeds of multiple numbers of photographic plates are thus tolerated by the natural resiliency of the pressure plate (56). Bowing of the pressure plate (56) is used to actuate feeding and removal of the photographic plates into the exposure position. Alphanumeric information is arbitrarily photographically printed onto the photographic plate subject to programmable control.