Patent ID: 9180216
Filing Date: 2015-11-10
Classification: A61L,G21K

Abstract:
1. An electron beam irradiation device comprising: electron beam irradiation means forming an electron beam irradiation zone by generating an electron beam; and gripping/moving means gripping a part of an object of irradiation and moving so that the object of irradiation passes through the electron beam irradiation zone, wherein the electron beam irradiation means is composed of three electron accelerators, each having an upper surface, a lower surface, and one side surface of the object of irradiation as irradiated surfaces, and is provided with three irradiation windows located substantially in parallel so as to face these three irradiated surfaces, respectively; the irradiation window faced with the upper surface or the lower surface of the object of irradiation among the three irradiation windows has an irradiation width of at least ½ of the whole width of the upper surface or the lower surface of the object of irradiation, respectively, the irradiation window faced with the one side surface of the object of irradiation among the three irradiation windows has an irradiation width of at least the whole width of the one side surface of the object of irradiation; the gripping/moving means is provided with two gripping mechanisms for gripping different portions of the object of irradiation, respectively, two moving mechanisms for moving the gripping mechanisms in a longitudinal direction, respectively, so that the object of irradiations gripped by the two gripping mechanisms, respectively, pass through the electron beam irradiation zone, and two rotation mechanisms for rotating the gripping mechanisms so that the objects of irradiation gripped by the two gripping mechanisms, respectively, are rotated; when the object of irradiation is gripped by the first gripping mechanism, by operations of the first moving mechanism and the first rotation mechanism, a portion in the upper surface and the lower surface of the object of irradiation not including the portion gripped by the first gripping mechanism and a side surface among the side surface of the object of irradiation not including the portion gripped by the first gripping mechanism pass through the electron beam irradiation zone; and when the object of irradiation is spaced away from the first gripping mechanism and is gripped by the second gripping mechanism, by operations of the second moving mechanism and the second rotation mechanism, a portion in the upper surface and the lower surface of the object of irradiation not including the portion gripped by the second gripping mechanism and a side surface among the side surfaces of the object of irradiation not including the portion gripped by the second gripping mechanism pass through the electron beam irradiation zone.