Patent Number: 06212255&
Section: claims

1. An X-ray irradiator for providing a uniform dose of X-ray beam irradiation to blood in a transfusion bag, said irradiator comprising in combination, a) a chamber for mounting said transfusion bag;  b) X-ray tubes mounted on opposed sides of said chamber; said tubes providing X-ray beams of radiation to said bag from opposite sides of said bag; and  c) said tubes each providing radiation at a same selected energy level to said bag to thereby provide a total radiation energy to said bag which is substantially uniform throughout said bag.  a) a cannister for confining said bag to have a uniform maximum thickness measured transverse to the beam radiation from said tubes.  a) source of X-ray radiation providing a beam of X-ray to cover a defined vertical area; and,  b) means for positioning said bag with its thickness dimension perpendicular to said beam to permit said beam to irradiate a first surface of said bag;  c) a support for said bag; and  d) means for rotating said support to cause said beam to irradiate the surface of said bag opposite said first surface.  a) a chamber for receiving said cannister containing mounting said transfusion bag;  b) first has X-ray tubes mounted to provide irradiation to opposite surfaces of said bag;  c) the irradiation of said tubes effectively combining to provide uniform irradiation to the blood in said bag.  a) the same power supply supplies power to both tubes. 2. An X-ray irradiator as in claim 1 wherein said tubes each provide a beam of radiation to fully cover the area of said transfusion bag transverse to said beams. 3. An X-ray irradiator as in claim 1 further including 4. An irradiator as in claim 3 wherein the cannister maintains the maximum thickness of said bag at 4 cm. 5. An irradiator as in claim 1 wherein said X-ray tubes each provide radiation at 160 kV, and are positioned 23 cm from said bag to irradiate said bag with a surface dose of 2500 rads and an exit dose of 1500 rads. 6. An X-ray irradiator for providing a uniform dose of X-ray beam irradiation to a transfusion bag blood, said bag being in the form of a rectangular box-like container, said irradiator comprising in combination, 7. An X-ray irradiator for providing a uniform dose of X-ray beam irradiation to blood in a transfusion bag which bag is pliable and is contained in a cannister said irradiator comprising in combination, 8. An X-ray irradiator as in claim 7 wherein said tubes each provide a beam of radiation to fully cover the area of said cannister transverse to said beams. 9. An X-ray irradiator as in claim 1 further including n ion pump to provide a vacuum in said X-ray tubes. 10. An X-ray irradiator as in claim 1 wherein