Patent ID: 8245711

Claim:
A patient interface comprising: a faceplate including a plurality of headgear attachment elements, the faceplate having a recess extending therethrough; a seal member operatively coupled to the faceplate; and an adjustment mechanism coupling the seal member to the faceplate such that the seal member is adjustable relative to the faceplate from a first position to a second position and maintains the seal member in the second position during use of the patient interface, wherein the adjustment mechanism includes: (i) a first member received within the recess and rotatable within the recess, and (ii) a threaded member coupled to the first member and the seal member, wherein rotation of the first member within the recess causes the threaded member to move relative to the first member and the seal member to move relative to the faceplate, wherein the first member comprises a knob portion having first threads provided on an interior surface of the knob portion and a barrel portion having second threads provided on an exterior surface of the barrel portion, wherein the knob portion is coupled to the barrel portion through engagement of the first threads with the second threads, the threaded member being coupled to the barrel portion, wherein rotation of the knob portion causes rotation of the barrel portion within the recess at a fixed position, and wherein rotation of the barrel portion causes the threaded member to move relative to the first member.