Abstract: A patient interface that includes a support body having a cushion and cheek interfaces. Collectively, the cushion and cheek interfaces operate to distribute compressive forces exerted on the user's face. The support body of the patient interface is constructed from a flexible material to impart additional adjustability to the cheek interfaces. The support body also has arcuate eyelets designed to provide a hinge between the headgear assembly and the support body.

Abstract: A facial mask for filtering ambient air is formed from a pre-form of a multilayer flexible flat filter member with solid plastic side ribs of a size to extend the filter member over the mouth and nostrils of the user. The flat pre-form filter member can have a trapezoidal perimeter with an endless band of a hypoallergenic adhesive tape encircling a perimeter opening of the filter member and operable for sealing with the user's skin to prevent leakage over extended use. Portions of the adhesive tape can self-seal to form a structural base for maintaining a central concavity by cantilevering the side ribs to ensure a large filtration area offset from the nostrils and mouth of the user. The flexible filter material can further include an activated carbon layer.

Abstract: A filtering apparatus may comprise a base material folded in a folded state. A filter may be attached to the base material. In addition, the filtering apparatus may comprise a perforation. The perforation may be configured to define a portion of the base material configured to be removed from the base material. The base material may be configured to be transformable to an unfolded state when the portion of the base material is removed along the perforation. An adhesive may be attached to the base material. The adhesive may be configured to adhere the filtering apparatus around at least one orifice of a subject when the base material is in the unfolded state. In addition, the filter may be doped with medication or other substances depending upon an intended application. The filtering apparatus may also contain a tactile area to assist the subject in using the filtering apparatus.

Abstract: The present invention discloses a seamless pad-type filter which is characterized in that it comprises two co-extensive sides, a top side and a bottom side. The top and bottom sides are made of fluid filtration material. The two sides create an inner chamber therebetween and are surrounded and joined together by a seamless outer perimeter. The seamless outer perimeter providing a seamless folded continuity between the two sides of the pad-type filter in the form of a plurality of fold lines which, as connecting segments beginning and ending at the same point, define the seamless outer perimeter. The top side further comprising a plurality of positive and negative secondary creases formed around a plurality of positive and negative crease lines. The crease lines are inclined to the fold lines and form pleats.

Abstract: The present invention relates to an anion emission and anti-dust nose mask capable of enhancing a compatibility so that it is well adapted to various sizes and types of nose based on its flexibility, and it is possible to wear without any string based on a pressure adjusting function, and the mask is not slid along a nose using a magnet, and nano filter, anion emission material receptacle, and anion emission material of the settling unit is added to a nose mask, thus achieving an anti-bacteria, deodorizing effect, and anion generation effect by the added material.

Abstract: A respiratory mask that conforms to N95 performance and other high performance standards with improved air permeability for improved air circulation. The respiratory mask has a mask body and a headband for putting on the respiratory mask to the face of a wearer, the mask body consisting of an inside mask having two or more filter layers; an outside mask, having two or more filter layers; one or more spacers inserted between the filter layers of the inside mask to generate space between different filter layers of the inside mask; and one or more spacers inserted between the filter layers of the outside mask to generate space between different filter layers of the outside mask so that when air is discharged by the wearer, the spacers together with the filter layers provide a pumping effect mechanism to blow out more carbon dioxide given off by the wearer to the surrounding and to take in more air from the surrounding for the wearer. Various forms and shapes of the spacer have been proposed.

Abstract: A cover, for a flexible patient breathing mask, which is made predominantly of a soft material and has an open bottom and an internal shape corresponding to the external shape of a patient mask. The cover has a socket piece opening opposite the open bottom. The socket piece opening corresponds to the socket piece on a patient mask. Openings are formed in the side faces of the cover, which allow visual access to the patient mask. The chin and cheek sections of the cover are deformable so that the mask is capable of distorting the cheek and chin sections of the breathing mask so that the mask is tightly fitted against the anatomy of the face of the patient to alter the shape of the cover through the application of force. The side edges of the cover may include at least one fastening device for straps for holding the cover and the mask tight against a patient's face, where the fastening device(s) may be hook-shaped.

Abstract: A filtering face mask that includes a mask body that is adapted to fit over the nose and mouth of a person and a harness that is attached to the mask body. The mask body comprises i) a first shaping layer that has been molded; ii) a second shaping layer that has been molded; iii) a filtration layer that is disposed between the first and second shaping layers; iv) a first adhesive layer that adheres the first shaping layer to the filtration layer; and v) a second adhesive layer that adheres the second shaping layer to the filtration layer.

Abstract: A filter cartridge assembly including a replendam that combines a particulate filter with an irregular shaped gas sorbent bed. Best operational practice requires that the air passing through the filter be distributed uniformly over the sorbent bed. The repledam directs the air over the surface of the larger sorbent bed utilizing vane-like structures extending from the reticulated member providing for uniform distribution.

Abstract: The present invention discloses a seamless pad-type filter which is characterized in that it comprises two co-extensive sides, a top side and a bottom side. The top and bottom sides are made of fluid filtration material. The two sides create an inner chamber therebetween and are surrounded and joined together by a seamless outer perimeter. The seamless outer perimeter providing a seamless folded continuity between the two sides of the pad-type filter in the form of a plurality of fold lines which, as connecting segments beginning and ending at the same point, define the seamless outer perimeter. The top side further comprising a plurality of positive and negative secondary creases formed around a plurality of positive and negative crease lines. The crease lines are inclined to the fold lines and form pleats.

Abstract: A compression element and a retention assembly using the compression element to retain an article on a flexible substrate are disclosed. Also disclosed is a method of making an assembly including an article retained on a substrate by a compression element. The retention assembly, compression element and method provide replacements for, e.g., mechanical staples. The retention assemblies, compression elements and methods are particularly useful for attaching elastic articles to the surfaces of flexible substrates without piercing the substrate. One example of attaching an elastic article to the surface of a flexible substrate is the attachment of an elastic strap to a respirator.

Abstract: The invention relates to a respirator mask which can be repeatedly fitted to different facial shapes. It consists of a mask base body and a support structure which supports the mask base body and can repeatedly be deformed plastically above a specific limit temperature so that the respirator mask can be fitted to different facial shapes.

Abstract: A filter cartridge (5), suitable for attachment to a respiratory mask, has a housing that includes an air inlet (27), an air outlet (39), and filter material (17, 19) through which air to be filtered travels through when passing from the inlet to the outlet. At least part of the housing includes a sheet material (23) that is thermo-formed around the sides of the filter material.

Abstract: A CPAP system is described for improved respiratory therapy of patients. In particular a patient interface is disclosed with an outlet vent with lower noise levels and more diffused outlet flow over prior art outlet vents. The outlet vent includes a main vent which is diffused and muffled and a higher resistance vent provided in case the main vent is blocked. The outlet vent is removable for easy maintenance and provides indication to the user when maintenance is required. The outlet vent described may be used on nasal masks, mouthpieces and patient interfaces generally.

Abstract: Respiratory devices having first and second lines of demarcation bisected by a fold. The devices are capable of being folded in a first substantially flat configuration for storage (e.g., in a pocket) and are capable of being unfolded in a second ready-to-wear configuration so that a portion of the device covering the nose and the mouth is off-the-face. Processes for making such devices include folding a preform over a bisecting axis and cutting the preform at desired angles and sealing the cuts together to form the mask.

Abstract: An air-impermeable hood having first and second substantially airtight seals adapted to encircle a portion of a wearer's body below the head, typically the neck. Continuously exhaled air from the wearer of the hood is channeled between the first and second seals pressurizing a space there between creating a continuously pressurized purge zone to the introduction of ambient air into the hood. When the pressure in the purge zone exceeds the resistance of the second seal, air taking the path of least resistance flows out of the second seal. The effect is that exhaled air from the wearer creates a pressurized barrier against ambient air yet also prevents the accumulation of excess carbon dioxide and moisture within the ocular area.

Abstract: The present invention is a protective spark cover for covering the exterior face of a filter for use with a respirator or the like. During metal welding, smelting and cutting operations and similar activities creating sparks, splatter and the like, exposed respirator filters may be perforated and made unusable. The present invention protective spark cover provides a removable cover to protect such filter elements from welding and spark damage and other similar mechanical damage. The invention is essentially a screen cover to protect the filter element and a frame to hold the screen in place over the filter.

Abstract: The present invention provides a flexible respirator filter having substantially coextensive front and back portions of filter material which are sealed to each other along their periphery, forming a sealed edge. A flexible plastic frame is contained within the front and back portions to form a plenum between the front and back portions of filter material. The frame has a peripheral edge which remains adjacent to the sealed edge of the filter material along substantially the entire length of the sealed edge to provide sufficient rigidity to prevent crushing while at the same time providing sufficient flexibility to fit under other personal protective equipment. A connector for attaching the filter to the respirator mask is formed integrally with the frame such that it protrudes through the back portion of the filter material. A plurality of recesses are also formed integrally with the frame to facilitate grasping the filter without crushing or damaging it.