초록 ▼

A low contact nasal mask assembly that includes a seal member defined from a unitary piece of elastomeric material. The seal member defines a nose receiving cavity and has a first end portion and a second end portion generally opposite the first end portion. A first open is defined in the first end

A low contact nasal mask assembly that includes a seal member defined from a unitary piece of elastomeric material. The seal member defines a nose receiving cavity and has a first end portion and a second end portion generally opposite the first end portion. A first open is defined in the first end portion to allow at least a portion of a nose of a patient to enter the nose receiving cavity such that the nares of the patient communicate with the nose receiving cavity. The seal member also includes a neck portion defined in the second end portion and a second opening defined in the neck portion in communication with the nose receiving cavity. In addition, an outside diameter of the seal member and an inside diameter of the seal member increase generally linearly from the second end portion to the first end portion to minimize contact of the seal member with a patient and to minimize dead space. Furthermore, a collar coupled to the neck portion of the seal member provides a plurality of headgear attachment points spaced apart from the seal member. Also, a conduit coupling member is coupled to the collar and provides a mounting by which the nasal mask selectively couples to a breathing circuit.

대표청구항 ▼

1. A patient interface device comprising:a collar defined from a relatively rigid material, the collar comprising: a flange having a first side and a second side opposite the first side, wherein an aperture is defined in a central portion of the flange to allow a gas to pass between the first side a

1. A patient interface device comprising:a collar defined from a relatively rigid material, the collar comprising: a flange having a first side and a second side opposite the first side, wherein an aperture is defined in a central portion of the flange to allow a gas to pass between the first side and the second side through the collar, a mounting member disposed on a first side of the flange, a conduit coupling portion disposed on a second side of the flange, and a plurality of headgear attachment points disposed on the flange; and a seal member defined from a pliable material and having a nose receiving cavity defined therein, the seal member comprising: a neck portion that is sized and configured so as to selectively engage the mounting member of the collar and to remain engaged therewith due to friction between the neck portion and the mounting member, wherein the neck portion includes a first opening defined therein that is sized and configured so as to communicate the nose receiving cavity with the aperture defined in the flange responsive to the seal member engaging the collar, thereby defining a gas flow path between the second side of the flange and the nose receiving cavity, a side wall extending from the neck portion and terminating generally at a first end portion that is adapted to contact a patient responsive to the patient interface device being donned by a patient, and wherein the first end portion includes a second opening defined therein that is sized and configured to receive at least a portion of a nose of such a patient so that nares of such a patient communicate with the nose receiving cavity.