US 12,357,415 B2
Method for marking an entry position for an injection apparatus in interventional mr imaging
Florian Maier, Buckenhof (DE)
Assigned to Siemens Healthineers AG, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Jun. 9, 2022, as Appl. No. 17/836,157.
Claims priority of application No. 102021205811.6 (DE), filed on Jun. 9, 2021.
Prior Publication US 2022/0395349 A1, Dec. 15, 2022
Int. Cl. A61B 90/00 (2016.01); A61B 5/055 (2006.01); G01R 33/48 (2006.01); G01R 33/56 (2006.01); G01R 33/563 (2006.01)
CPC A61B 90/37 (2016.02) [A61B 5/055 (2013.01); G01R 33/4818 (2013.01); G01R 33/5608 (2013.01); G01R 33/56333 (2013.01); A61B 2090/374 (2016.02)] 16 Claims
OG exemplary drawing
 
1. A marking apparatus, comprising:
a tubular housing made from MR-visible material surrounding a hollow region oriented in an axial direction, wherein the tubular housing is telescopic and a length of the tubular housing is variable in the axial direction;
a liquid apparatus, which is arranged inside the hollow region at a delivery end of the tubular housing, and is designed to receive and/or deliver a liquid; and
a portioning apparatus, which is arranged inside the hollow region, and is designed to control a volume of the liquid apparatus to receive and/or deliver the liquid,
wherein the tubular housing comprises telescoping sections arranged in the axial direction, each having a truncated cone shape with a decreasing diameter in a direction toward the delivery end, and wherein the telescoping sections are nestable within the telescoping section proximate the delivery end.