(under subclass 1) Subject matter wherein means is provided for extracting or easing the natural passage of a calculus or "stone" (any solid mass formed by coalescence or cohesion) from a body organ or associated excretory duct.
SEE OR SEARCH CLASS
601, Surgery: Kinesitherapy,
4+, for massaging devices used to crush body stones by the application of a force external to the body.
