US 11,937,909 B2
Magnetic marker, location detection system, introducer and method
Theodoor Jacques Marie Ruers, Amsterdam (NL); Bram Schermers, Amsterdam (NL); and Bennie Ten Haken, Amsterdam (NL)
Assigned to Sirius Medical Systems B.V., Eindhoven (NL)
Appl. No. 15/521,918
Filed by Stichting Het Nederlands Kanker Instituut-Antoni Van Leeuwenhoek Ziekenhuis, Amsterdam (NL); and Universiteit Twente, Enschede (NL)
PCT Filed Oct. 27, 2015, PCT No. PCT/NL2015/050745
§ 371(c)(1), (2) Date Apr. 26, 2017,
PCT Pub. No. WO2016/068700, PCT Pub. Date May 6, 2016.
Claims priority of application No. 2013686 (NL), filed on Oct. 27, 2014.
Prior Publication US 2017/0319101 A1, Nov. 9, 2017
Int. Cl. A61B 5/06 (2006.01); A61B 5/05 (2021.01); A61B 10/02 (2006.01); A61B 90/00 (2016.01); A61M 37/00 (2006.01); G01N 27/72 (2006.01); G01R 33/02 (2006.01)
CPC A61B 5/062 (2013.01) [A61B 5/05 (2013.01); A61B 10/02 (2013.01); A61B 90/39 (2016.02); A61M 37/0069 (2013.01); G01N 27/72 (2013.01); G01R 33/02 (2013.01); A61B 2090/3908 (2016.02); A61B 2090/3954 (2016.02); A61B 2090/3987 (2016.02)] 12 Claims
OG exemplary drawing
 
1. A magnetic marker for use in locating tissue for surgery, comprising:
a casing, wherein the casing comprises an annular sleeve having a constant outer diameter, and
two or more magnetic elements arranged in a row in the casing, wherein the two or more magnetic elements are solid cylindrical elements arranged in the sleeve,
wherein the two or more magnetic elements are made of ferromagnetic material, and
wherein a flat film of magnetically isolating material is provided between two adjacent magnetic elements,
wherein the two or more magnetic elements are separated by the film of magnetically isolating material, and
wherein the magnetic marker is non-bio-absorbable.