Patent ID: 8616391

Claim:
A teat having a main body with an inlet opening, a mouthpiece with a suction opening, and at least one suction channel extending from the inlet opening to the suction opening, wherein the mouthpiece has at least one extensible zone which extends separately from the at least one suction channel and which has no suction opening, and which, during use, lies between the palate and tongue of a baby, and wherein the at least one extensible zone is configured to expand in the presence of an underpressure generated in the baby's mouth during sucking, wherein the mouthpiece has a peripherally closed outer wall, a peripherally closed inner wall having a first end and a second end, wherein the first end adjoins the outer wall in the area of the suction opening, and a flange adjoining the second end of the inner wall, wherein the inner wall, on an inner face directed towards a longitudinal center axis, forms the at least one suction channel, and wherein the flange is oriented radially outwards from the inner wall, such that the flange can be hinged sealingly into an opening of a receiving head of a teat unit.