US 11,749,418 B2
Strontium sealed source
Mark W. Vose, Windham, NH (US); Mark G. Shilton, Chelmsford, MA (US); and Jason W. Bourn, Stratham, NH (US)
Assigned to QSA GLOBAL, INC., Burlington, MA (US)
Filed by ILLINOIS TOOL WORKS INC., Glenview, IL (US)
Filed on Nov. 23, 2020, as Appl. No. 17/101,249.
Application 17/101,249 is a continuation of application No. 16/400,194, filed on May 1, 2019, granted, now 10,950,362.
Application 16/400,194 is a continuation of application No. 15/571,310, granted, now 10,714,226, issued on Jul. 14, 2020, previously published as PCT/US2016/022437, filed on Mar. 15, 2016.
Claims priority of provisional application 62/158,091, filed on May 7, 2015.
Prior Publication US 2021/0104337 A1, Apr. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G21G 4/06 (2006.01); A61N 5/10 (2006.01); A61F 9/007 (2006.01)
CPC G21G 4/06 (2013.01) [A61N 5/1001 (2013.01); A61F 9/007 (2013.01); A61M 2210/0612 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A radiological insert with a central portion and a peripheral portion, the central portion being relatively thinner and the peripheral portion being relatively thicker, the central portion including an upwardly extending convex upper surface which extends above the peripheral portion and a substantially planar lower surface, wherein the peripheral portion extends below the substantially planar lower surface of the central portion.