Tubular-shafted surgical instrument

A tubular-shafted surgical instrument comprising:

• two handle parts articulatedly connected to each other,
• a tube held on one handle part,
• a tool releasably mounted at an end of said tube,
• a rod-shaped actuating element for said tool, said actuating element being mounted for longitudinal displacement in said tube and being articulatedly connected to said other handle part via a cylindrical or spherical end,
• a releasable connection between said tube and actuating element being releasably connected to said two handle parts,
• said tube being pushable into a tubular receptacle on said one handle part and axially fixable therein by at least one radially moveable locking body which in an end position enters into a positive connection with said tube, and
• a retaining member being mounted on said other handle part, said retaining member at least partly embracing said cylindrical or spherical end of said actuating element in one end position and being moveable into another end position in which said cylindrical or spherical end is removable from said other handle part in the longitudinal direction, wherein:
• said locking body is a ball,
• said radial movement of said locking body is delimited by a stop resting against the outer side of said locking body, said stop being formed by a sleeve axially displaceable on said tubular receptacle,
• said sleeve is displaceable relative to said locking body such that said locking body is radially outwardly displaceable to different extents,
• said sleeve forms a stop for an outer tube which is mounted for axial displacement on said tube, where said sleeve in a forward end position locks the releasable mounting of said tool at the opposite end of said tube, and
• said sleeve is displaceable in the direction towards said handle parts in order to release the locking of said tube.