Shielded container
First Claim
1. A shielded container adapted to fit within the measuring well of a radioisotope calibrator comprising an inner open topped cylindrical body having a cylindrical sidewall and a bottom wall both of radioactive shielding material with areas of the cylindrical sidewall just above the bottom wall being nonshielding, an outer rotatable hollow cylindrical sleeve having its lower wall of radioactive shielding material and its upper wall of nonshielding material, a vial containing a radioactive solution housed within the inner cylindrical body and resting on the bottom wall, a radioactive shielding closure for the open topped inner cylindrical body, and positioning means whereby the shielding portion of said outer sleeve can be locked into a position adjacent the nonshielding areas of said inner cylindrical sidewall and then when the container is located in the measuring well of a radioisotope calibrator said outer sleeve will be in a position such that said unshielded upper wall of said sleeve is adjacent the nonshielding areas of said inner cylindrical sidewall.
1 Assignment
0 Petitions
Accused Products
Abstract
A shielded container in which a vial containing a radioactive solution is housed. The container is constructed so that the activity of the radioactive solution can be measured in a radioisotope calibrator without exposing the technician to potentially harmful radioactivity.
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Citations
29 Claims
- 1. A shielded container adapted to fit within the measuring well of a radioisotope calibrator comprising an inner open topped cylindrical body having a cylindrical sidewall and a bottom wall both of radioactive shielding material with areas of the cylindrical sidewall just above the bottom wall being nonshielding, an outer rotatable hollow cylindrical sleeve having its lower wall of radioactive shielding material and its upper wall of nonshielding material, a vial containing a radioactive solution housed within the inner cylindrical body and resting on the bottom wall, a radioactive shielding closure for the open topped inner cylindrical body, and positioning means whereby the shielding portion of said outer sleeve can be locked into a position adjacent the nonshielding areas of said inner cylindrical sidewall and then when the container is located in the measuring well of a radioisotope calibrator said outer sleeve will be in a position such that said unshielded upper wall of said sleeve is adjacent the nonshielding areas of said inner cylindrical sidewall.
- 9. A shielding container adapted to fit over the top of the measuring well of a radioisotope calibrator comprising a hollow cylindrical wall formed of radioactive shielding material having an opening cut through a section of said cylindrical wall, a slideable container bottom member also formed of radioactive shielding material which is dimensioned to slide in and out of said cylindrical wall opening, a vial containing radioactive material located within said container, and a radioactive shielding closure for said container, wherein said vial is supported within said container while said slideable bottom member is pulled out through said cylindrical wall opening and said vial is afterward lowered down out of said container into the measuring well of said radioisotope calibrator.
- 13. The container of claim 13 wherein said shielding closure includes a removable access cover formed of shielding material having an inner diameter less than the inner diameter of the shielding cylindrical body section but greater than the diameter of the vial, a retaining ring of rigid or semi-rigid polymeric material which fits over the access cover and anchors the access cover to the shielding cylindrical body section, and a cap of shielding material which seals the opening of the access cover.
- 19. A shielding container adapted to fit over the top of the measuring well of a radioisotope calibrator comprising a core of non-shielding material including an upstanding hollow cylindrical body section having at least one slot shaped opening in the sidewall and a base encircling the periphery of the cylindrical body section said base comprising a top wall having a downwardly extending groove and a sidewall, a bottom slide member of shielding material dimensioned to fit under said hollow cylindrical body section, a housing having a ring shaped bottom whose inner diameter is approximately equal to the inner diameter of said cylindrical body section said housing being attached to the bottom of said base and supporting the weight of said bottom slide member, an inner generally cylindrically shaped hollow stationary shield formed of radioactive shielding material whose bottom fits within said groove in said base topwall and completely encircles said cylindrical body section, said inner shield having at least one slot shaped opening corresponding in size to the opening in said cylindrical body section and a flat topwall, an outer rotatable generally cylindrically shaped hollow shield formed of radioactive shielding material which sits upon said base topwall encircling said stationary shield, said outer shield having at least one slot shaped opening corresponding in size to that in said inner shield, at least one bar of transparent radioactive shielding material attached over the opening in said cylindrical body section and protruding to fill the opening in said inner shield, a transparent vial containing radioactive material located within said cylindrical body section, and a radioactive shielding closure attached to the flat top wall of said inner stationary shield wherein the outer shield can be rotated so as to align its opening with the transparent shielding material and permit viewing of said vial and wherein said vial is supported within said cylindrical body section while said slideable bottom member is pulled out from beneath said cylindrical body section.
Specification