A61B 2017/22074

Implements for squeezing-off ulcers or the like on {the inside of} inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; {Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other the instrument being only slidable in a channel, e.g. advancing optical fibre through a channel}