Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Albert-ludwigs-univerität Freiburg

Albert-ludwigs-universitat Freiburg

Katharina Richter

Ingo Grunwald

Arkadiusz Miernik

Martin Schoenthaler

Michael Szardenings

Klaus Rischka

Primarily described are gel-forming systems, consisting of or comprising a composition (A), comprising one or several cationically crosslinkable polymer(s), and a composition (B), comprising one or several crosslinking agent(s) for crosslinking the cationically crosslinkable polymer(s) for use in a method for removing urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, from a region of the urinary tract, more particularly a kidney, that contains urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, that are to be removed, with the following steps: (i) providing the compositions (A) and (B), (ii) introducing the compositions (A) and (B) into a region of the urinary tract, more particularly the kidney, that contains urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, that are to be removed, under conditions enabling crosslinking of the cationically crosslinkable polymer(s) upon contact of composition (A) with composition (B) so that a crosslinked gel is formed that partly or fully surrounds the urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, that are to be removed, (iii) removing the crosslinked gel together with the urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, that are surrounded by it from the urinary tract, more particularly the kidney.

Gel-forming system for removing urinary calculi and fragments thereof

Described is a kit for producing a crosslinked gel for surrounding urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, comprising a composition (A) comprising one or several cationically crosslinkable polymer(s), and a composition (B) comprising one or several crosslinking agent(s) for crosslinking the cationically crosslinkable polymer(s), wherein composition (A) and/or composition (B) additionally comprise(s) magnetizable particles or the kit additionally comprises a composition (C) that contains magnetizable particles. Upon contact of composition (A) with composition (B) in a region of the urinary tract, more particularly the kidney, that contains urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, a crosslinked gel is formed that partly or fully surrounds the urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, and that contains the magnetizable particles. The gel together with the urinary calculi and/or fragments thereof, more particularly kidney stones and/or fragments thereof, can then be removed from the body by using magnetic interactions.

Kit for producing a crosslinked gel for surrounding urinary calculi and/or fragments thereof

Method for marking a target structure, comprising the following steps:

Method for marking or immobilising a target structure

Growing community of inventors

Bremen, Germany

Katharina Richter