Mixer device

An exhaust system for an internal combustion engine, the exhaust system comprising:

• an exhaust gas pipe leading to a catalytic converter device;
• and
• a mixer device comprising:
• a tubular carrier enclosing a mixer longitudinal axis with a ring-shaped configuration with a plurality of connection recesses, the tubular carrier being associated with the exhaust gas pipe or being provided by the exhaust gas pipe;
• and
• a mixer insert carried at the carrier, the mixer insert comprising a plurality of connection attachments located at spaced locations from one another in a circumferential direction, radially on an outside in relation to the mixer longitudinal axis, wherein the mixer insert is permanently connected to the carrier at the plurality of connection recesses,
• wherein at least one of the plurality of connection recesses passes completely through a wall of the carrier,
• wherein the mixer insert is connected to the carrier by a connection in substance in an area of at least one of the plurality of connection attachments,
• wherein each connection recess passing completely through the wall of the carrier and providing a connection to a respective one of the connection attachments is gastight sealed by the connection in substance, and
• wherein the mixer insert, comprising a mixer body and the connection attachments projecting radially outwards from the mixer body, is shaped as a sheet metal part.