A patient interface includes a seal forming portion, a pad, and a cushion. The seal forming portion may have a base surface and a plurality of fibers fixed to and extending away from the base surface for contacting a patient's skin. The cushion may have at least along a portion of the circumference a first structure having an elongate section joined with at least one end section oriented substantially perpendicular or at an angle to the elongate section. A first end A of the elongate section may be connected or connectable to a frame member. The end section may be provided at an opposing second end B of the elongate section. The pad may have a resilient foam material layer with the seal forming portion. The pad may be adapted to be connected to the cushion.

A mask system for use between a patient and device to deliver a breathable gas to the patient includes a mouth cushion, a pair of nasal prongs, an elbow, and a headgear assembly. The mouth cushion is structured to sealingly engage around an exterior of a patient's mouth in use, and the pair of nasal prongs are structured to sealingly communicate with nasal passages of a patient's nose in use. The elbow delivers breathable gas to the patient. The headgear assembly maintains the mouth cushion and the nasal prongs in a desired position on the patient's face. The headgear assembly provides a substantially round crown strap that cups the parietal bone and occipital bone of the patient's head in use.

A mask system for use between a patient and device to deliver a breathable gas to the patient includes a mouth cushion, a pair of nasal prongs, an elbow, and a headgear assembly. The mouth cushion is structured to sealingly engage around an exterior of a patient's mouth in use, and the pair of nasal prongs are structured to sealingly communicate with nasal passages of a patient's nose in use. The elbow delivers breathable gas to the patient. The headgear assembly maintains the mouth cushion and the nasal prongs in a desired position on the patient's face. The headgear assembly provides a substantially round crown strap that cups the parietal bone and occipital bone of the patient's head in use.

A patient interface device includes a frame member and a cushion having a main body, a sealing portion, and first and second posts extending from the main body. The frame member defines a first orifice and a second orifice. The first post of the cushion is rotateably received within the first orifice and the second post is rotateably received within the second orifice in a manner that permits the cushion to rotate relative to the frame member.

A method and apparatus can be used in the selection of correctly sized respiratory interfaces. The method includes the use of light beams to project sizing markers onto a patient's face, which enables the size of the patient's facial features to be measured relative to a set of interface sizes. A sizing apparatus can include a light source and beam splitters that will refract and project the light source into a series of beams that can be aligned on a patient's face in order to measure the features of the patient.

The present disclosure is a face seal (FS) device for filtering face piece respirators (FFR) of all types, that corrects inner face seal leakage (FSIL) of particulate material that occurs due to well documented failures in FS designs of the prior art. The present disclosure differs from those of the prior art in having compensatory accentuations at locations along the entire 360 deg. FS inner perimeter that are based on specific details of facial human anatomy which are known to be sites of FSIL. The FS is also constructed of a heat activated thermoplastic copolymer that enables the device to be custom fitted to the user's face. Experimental data, confirmed with workplace protective factor (WPF) studies, show a 60-240 fold improved performance over FS designs of the prior art.

It is discloses a patient interface 3000 comprising a seal forming portion 11, a pad 10, and a cushion 20. The seal forming portion 11 may comprise a base surface 111 and a plurality of fibers 112 fixed to and extending away from said base surface 111 for contacting a patient's skin. The cushion 20 may comprise at least along a portion of the circumference a first structure 22 having an elongate section 24 joined with at least one end section 26 oriented substantially perpendicular or at an angle to the elongate section 24. A first end A of the elongate section 24 may be connected or connectable to a frame member 30. The end section 26 may be provided at an opposing second end B of the elongate section 24. The pad 10 may comprise a resilient foam material layer with the seal forming portion 11. The pad 10 may be adapted to be connected to the cushion 20.

An adjustable mask system (100) includes a cushion with a seal (130) having the ability to change size and/or shape. The seal is preferably a one-piece, continuous member without interruptions. To effect adjustment of the size and/or shape of the seal, an actuator may be provided, which may take the form of a dial (190).

A full-face cushion for a patient interface that delivers breathable gas to a patient includes a frame connector adapted to engage the cushion with a mask frame. A clip is provided to maintain the cushion to the frame. The clip includes clip portions that connect to the frame with a snap-fit.

A respiratory interface device is provided. The respiratory interface device includes a cushion structured to be coupled to a faceplate that includes a peripheral end and a coupling assembly. The faceplate peripheral end includes a formable material and a portion of faceplate peripheral end is a customized contoured end. Cushion is coupled to faceplate adjacent faceplate customized contoured end, cushion conforming to faceplate customized contoured end.