US20100192955A1 - Patient interface structure and method/tool for manufacturing same - Google Patents

Patient interface structure and method/tool for manufacturing same Download PDF

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Publication number
US20100192955A1
US20100192955A1 US12/656,466 US65646610A US2010192955A1 US 20100192955 A1 US20100192955 A1 US 20100192955A1 US 65646610 A US65646610 A US 65646610A US 2010192955 A1 US2010192955 A1 US 2010192955A1
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United States
Prior art keywords
mold
cavity
component
patient interface
mold part
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Abandoned
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US12/656,466
Inventor
Achim Biener
Bernd Lang
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Resmed R&D Germany GmbH
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MAP Medizin Technologie GmbH
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Publication of US20100192955A1 publication Critical patent/US20100192955A1/en
Assigned to MAP MEDIZIN-TECHNOLOGIE GMBH reassignment MAP MEDIZIN-TECHNOLOGIE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LANG, BERND
Assigned to MAP MEDIZIN-TECHNOLOGIE GMBH reassignment MAP MEDIZIN-TECHNOLOGIE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIENER, ACHIM
Assigned to RESMED R&D GERMANY GMBH reassignment RESMED R&D GERMANY GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MAP MEDIZIN-TECHNOLOGIE GMBH
Priority to US15/945,532 priority Critical patent/US10786642B2/en
Abandoned legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06Respiratory or anaesthetic masks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06Respiratory or anaesthetic masks
    • A61M16/0605Means for improving the adaptation of the mask to the patient
    • A61M16/0616Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06Respiratory or anaesthetic masks
    • A61M16/0605Means for improving the adaptation of the mask to the patient
    • A61M16/0616Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • A61M16/0622Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure having an underlying cushion
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06Respiratory or anaesthetic masks
    • A61M16/0605Means for improving the adaptation of the mask to the patient
    • A61M16/0633Means for improving the adaptation of the mask to the patient with forehead support

Definitions

  • the invention relates to patient interfaces such as breathing masks covering nose and/or mouth of a patient and components or structures thereof as well as to methods for manufacturing such patient interfaces or components thereof and further relates to tools for manufacturing the same. Furthermore, the present invention relates to cushions, pads, supporting structures and/or sealing structures, such as mask cushions or forehead pads etc. for a patient interface such as a breathing mask. Moreover, the present invention relates to a patient interface or component of a patient interface obtainable by a method according to the present invention as well as to a tool for producing such interface or component and/or for performing a respective method.
  • the invention concerns, in particular, a pad or cushion and a patient interface such as a breathing mask which is equipped with such pad or cushion.
  • An internal space of a breathing mask is established by the patient interface in conjunction with sealing contact of the pad or cushion with the surface of the face of a user.
  • This internal space is sealed in relation to the ambient atmosphere in such a way that a pressure which is preferably increased in relation to the ambient pressure can be obtained, e.g. in phase-wise fashion, in the internal space of the patient interface or breathing mask.
  • Breathing masks of that kind are used in particular in connection with the medical or therapeutic administration of breathable gases and also in the technical sector, for example in the sector of breathing apparatus technology, and particularly for CPAP and BiPAP therapy.
  • the invention further concerns a sealing, contact and/or support structure and a process and tool for the production thereof in general.
  • sealing lip structure e.g., extends in inwardly directed relationship around an opening of the mask, and is made from an elastically deformable material.
  • sealing action achieved with sealing lips of that kind generally increases with the pressure with which the sealing lip is pressed against the surface of the face.
  • comparatively high contact pressures in particular long-term use of breathing masks of that kind can give rise to troubles.
  • Patient interfaces and patient interface structures or components are known in the prior art, for example, in the field of face masks for delivering breathable air to a patient.
  • face masks often hollow cushions or bent, resilient lip-structures are used for providing contact zones for contacting the face of the user in order to avoid dents and to improve wearing comfort of the user.
  • structures are used as a sealing structure for sealing the mask interior from the exterior in the contact region where the mask rests on a user's face.
  • a disadvantage of structures known in the art is that they are complicated to manufacture and a number of manual manufacturing steps is often necessary. Often a number of different parts is manufactured wherein the parts are provided with connection structures and have to be assembled to form the final product.
  • breathing masks which comprise an individually molded part made of polyurethane foam which is loosely fitted into the mask frame for constituting part of a face mask cushion.
  • this kind of assembly requires providing structures in the mask seal, the mask body or both that allow for a mechanical linkage between these at least two components.
  • This typically requires the use of additional materials to form different parts of a mask structure increases the complexity of the design as well as the manufacture of the mask. This leads to limitations in design due to the requirements of providing connection structures, and requires a complex hand assembly or hand manipulation for assembling the mask etc.
  • the solutions known in the prior art are in particular, not easy to handle, not durable, complicated and expensive to manufacture, not suitable for automating, not bio-compatible as well as optically and hygienically objectionable.
  • the known solutions are further disadvantageous in that they do not or insufficiently allow individualization and are less comfortable for a wearer, particularly with regard to material properties such as weight and hardness.
  • WO 2007/009182A1 refers to a respiratory mask and a method for manufacturing a respiratory mask comprising a first component formed from a material that is more rigid than the flexible material, wherein the first component is formed onto the second component by an over molding process.
  • WO 03/105921A2 relates to a mask cushioning and forehead pad for a respiratory mask, and a method for its production comprising a mask cushioning having zones with an increased cross section that are configured in the mask cushioning, wherein the mask cushioning material in said zones has different material properties in such a way that the Shore hardness of the mask cushioning in the boarder region is higher than in the core region.
  • this disclosure is advantageous in that it provides a one piece hygienic component, it still suffers from the above disadvantageous, particularly from limitations in the design of the sealing structures and from complex manufacturing methods.
  • the present invention relates to a patient interface structure or component, e.g., a breathing mask and components thereof.
  • a patient interface structure or component e.g., a breathing mask and components thereof.
  • Such components are, e.g., a pad or a cushion for supporting and/or sealingly supporting a breathing mask or patient interface on a user's skin.
  • the present invention relates to a method and tool for manufacturing a patient interface or patient interface component, particularly those according to the present invention.
  • the first and second parts are preferably parallelly and/or subsequently co-molded.
  • the first and second part have a different hardness wherein the first part is molded in a first step and wherein the second part is subsequently molded-on or foamed-on the first part.
  • the first part is made of a hard material, particularly with regard to the second material
  • the second material is made of a soft material, particularly with regard to the first material.
  • the first material is harder than the second material.
  • foaming-on of the second part to the first part and the co-molding of the first part and the second part results in the first and second part being formed integrally with one another.
  • the method and tool according to present invention particularly allow to mold a foamed part on or onto another part in an easy, reliable, efficient and effective manner.
  • the present invention does not require that a component of a first part and a foamed second part are formed by ‘surrounding’ the first part by a foamed material wherein the first part constitutes a core.
  • a foamed material wherein the first part constitutes a core.
  • the present invention relates to a component of a patient interface, such as a breathing mask, and in particular to a patient interface cushion comprising a support structure, such as a frame-component and a cushion or undercushion for supporting the interface on a patient's face.
  • a patient interface cushion comprising a support structure, such as a frame-component and a cushion or undercushion for supporting the interface on a patient's face.
  • the component further comprises a membrane, particularly for sealing the cushion against a users face.
  • the first part and the second part integrally merge at a merging or contact surface constituting the contact area between said two parts.
  • Said merging surface preferably is a substantially plane surface and/or a surface having a substantially plane cross-section.
  • the merging or contact surface comprises at least two distinct surface portions.
  • the merging or contact surface comprises a first surface portion and the second surface portion wherein the first surface portion and the second surface portion are inclined towards one another.
  • the merging or contact surface has a plane, an elbow-shaped, u-shaped, recessed, cup-like, and/or hook-shaped profile at least at a part of its cross-section.
  • the merging or contact surface does not have undercuts.
  • the first portion and second portion solely merge via such merging surface and/or are not connected by means of structural or mechanical fastening means.
  • the contact surface of the first material comprises bores and/or cavities which are at least partly filled by the second material when foaming the second material on the first material.
  • the component of a patient interface is a breathing mask cushion for sealingly supporting a breathing mask on a wearer's face, a forehead pad for supporting a breathing mask on a wearer's face, part of a headband for securing a device such as a breathing mask to a wearer's head or other parts or components for contacting a wearer's body.
  • such interface comprises a thin membrane for sealingly contacting a user's skin and an undercushion being thicker than the the membrane and being arranged—when viewed from the patient—under or behind said membrane.
  • the second part according to the present invention constitutes such undercushion wherein the first part is adapted to support the second portion and to connect it to a patient interface frame.
  • the first part also comprises the membrane being integrally formed therewith or being, preferably releasably, attached thereto.
  • the membrane forms an outer portion of the patient interface (cushion) for, preferably sealingly, contacting a wearer's skin wherein the second part or undercushion is shielded vis-à-vis the wearer's skin by the membrane and is attached, preferably releasably, to the patient interface by means of the first part.
  • the second part preferably does not directly contact the wearer's skin.
  • a patient interface component here e.g. a mask cushion
  • a membrane or sealing lip portion and a cushion or undercushion comprising a connection portion for connecting it to a mask frame.
  • the membrane or sealing lip portion is preferably an independent, non-integral part which is individually connected to the mask frame.
  • the membrane or sealing lip portion is co-molded and integrally formed with support portions of the patient interface, such as, e.g., the mask frame and/or the first part according to the preset invention.
  • the mask cushion or undercushion comprises a cushion portion and a connection portion.
  • the connection portion corresponds to the first part as referred to herein wherein the cushion portion corresponds to the second part as referred to herein.
  • the second part is made of a foam or a foamed material.
  • the second part is co-molded to or foamed-on the first part along the contact area or merging surface.
  • the component according to the invention preferably forms an undercushion of a breathing mask cushion which is shielded or covered vis-à-vis a wearer by a membrane or sealing lip portion which at least partially extends along and over undercushion portion, respectively, when assembled to a mask frame.
  • the second part is located in the mask interior oriented or facing towards the outside environment of the mask or towards a wearer, respectively whereas the first part of the mask cushion is located in the mask interior oriented or facing towards the inside of the mask or or away from a wearer, respectively.
  • the first part is not or does not comprise a foam or foamed material wherein the second part is made of or comprises a foamed material.
  • the first part has a first material characteristic and the second part has a second material characteristic different from the first material characteristic.
  • said characteristic is hardness.
  • the (first) hardness of the first part is higher than the (second) hardness of the second part.
  • the first part comprises a polymer, e.g., a polysiloxane; silicone; liquid silicone rubber, and/or thermoplastic elastomer.
  • the second part comprises foamed materials, e.g., foamed silicone and/or foamed polyurethane.
  • the second part is made of a material having visco-elastic properties.
  • the breathing mask cushion and patient interface respectively, preferably comprises a longitudinal axis extending generally perpendicular to a contact plane in which the cushion or interface substantially contacts a wearer.
  • the contact region comprises one or more, at least two and preferably three distinct portions.
  • the contact region is directed towards one side of the first/second part only.
  • the second part does not surround or include the first part or portions thereof.
  • the contact region, the first part and/or the second part are generally ring shaped.
  • the ring can be closed or can be open, i.e. a ring-segment.
  • the method and tool according to the present invention particularly allow to foam the second part on the first part from one side only and onto substantially plane surfaces, generally to any surface of the first part.
  • the present invention relates to a method for producing a component of a patient interface or a patient interface, respectively.
  • the method according to the present invention relates to the production of a patient interface or component of a patient interface, such as a breathing mask cushion, as discussed and disclosed in the present application.
  • a preferred method according to the present invention comprises the steps of providing a molding tool having a first mold part and a second mold part which are adapted to define a first mold cavity therebetween for molding a first part of said patient interface or patient interface component.
  • a first material having first material characteristics, such as a first hardness is injected into the first molding tool and into the first cavity defined thereby in order to provide the first part of the component.
  • the first mold cavity is opened and the first part is removed.
  • the molded first part is ejected or removed from the first mold part and is provided into a second cavity formed between at least a third and a fourth mold part.
  • the third and fourth mold parts are designed and arranged so that the second mold cavity is established, as discussed above.
  • the second cavity is larger than the first molded part so that a cavity is formed between the third mold part, the fourth mold part, and/or the first molded part.
  • a second material having a second material characteristic, such as a second hardness, is then fed into the second mold cavity in order to provide a second part integral with the first part.
  • the second material is provided as a foam or foamed material. This includes that the second material is introduced or fed into the second cavity in a foamed state and/or that the second material is foamed inside the second cavity, e.g., by mans of a foaming agent.
  • the second material is provided or fed into the second cavity at elevated pressure and/or resulting in an elevated pressure in the second cavity, e.g. by means of the foaming agent.
  • the first material characteristic and the second material characteristic such as the first hardness and the second hardness, differ from one another wherein, preferably, the first hardness is larger than the second hardness.
  • the mold parts are preferably arranged around a turntable. After the first part has been molded, preferably injection molded, the first molded part is removed from the first mold cavity and the first mold part is provided into the second mold cavity by turning of the turntable and by placing it in a defined position in relation to the third and fourth mold part so that it is positioned in the second cavity. Then, the second part is molded.
  • the tool is opened and the patient interface component can be ejected or withdrawn from the tool.
  • a tool for manufacturing a patient interface or a patient interface component as discussed in the present application and/or for performing a method as discussed in the present application is provided. Aspects of such tool have already been discussed in combination with the patient interface component or the method of the invention.
  • Such tool preferably comprises a first mold part and a second mold part which are adapted to define a first mold cavity therebetween.
  • a third mold part and a fourth mold part adapted to define a second mold cavity therebetween and/or between the first part of a patient interface component and the third and/or fourth mold part.
  • the first and second mold part define walls of said first cavity whereas the third mold part, the fourth mold part and/or the first molded part define walls of said second cavity.
  • the wall of said second cavity is preferably partly formed by or comprises the merging surface or contact region formed by the first molded part of the patient interface component.
  • the third mold part, the fourth mold part and/or the first molded part preferably comprise at least one pressure-flange for sealing the second cavity and preferably the first part against the third mold part and/or the fourth mold part.
  • the one or more pressure flange(s) is/are designed and arranged such that it/they define(s) the merging surface on the first part of the patient interface component.
  • the second cavity for molding the second part of the patient interface component is sealed against the first molded part so that a contact or merging surface is defined forming part of the walls of the second cavity for molding the second part of the patient interface on the first part at the merging surface.
  • At least one pressure flange is provided on the first nolded part this is preferably achieved by providing a negative form of the pressure flange by the first cavity, preferably in the first mold part and/or the second mold part such that the pressure flange is molded integrally with the first molded part.
  • the pressure flange(s) allow forming of a second cavity by sealing the first molded part, and particularly the merging surface of the first molded part against the third and or fourth mold parts, respectively.
  • the first and second mold part providing the first cavity constitute an injection molding mold wherein the third and fourth mold part providing the second cavity constitute a foaming mold.
  • the pressure flange(s) is/are preferably constituted by the provision of a sealing ring, made of, e.g. silicone material.
  • a sealing ring made of, e.g. silicone material.
  • such sealing ring e.g. in the form of an O-ring or the like, is attached to the third and/or fourth mold part(s) by the provision of a fastening groove for attaching said ring type pressure flange to the third mold part and/or fourth mold part.
  • This embodiment comprising one or more silicone sealing rings constituting one or more pressure flange(s) is particularly preferred for manufacturing a second molded part made of polyurethane foam.
  • the present invention is of particular advantage in that it provides an improved patient interface and patient interface component such as a breathing mask cushion with enhanced characteristics.
  • the patient interface and patient interface component according to the present invention allows improved comfort for a wearer and avoids reddening and pressure marks occurring on a wearer's face.
  • the present invention allows the provision of special and interchangeable geometries and properties of a patient interface and a patient interface component for improved compliance with a user's physiognomy and anthropometry.
  • the present invention particularly allows efficient and effective production of improved patient interfaces and/or components and an automated production.
  • optically and hygienically as well as structurally improved patient interfaces and patient interface components can be provided.
  • the present invention additionally or alternatively allows the provision of an improved usability of the molded product, particularly by allowing the provision of a supporting structure integrally combined with a softer, foamed part.
  • a first and second molded part allows the provision of a soft and comfortable material for e.g. comfortably supporting a patient interface on a users skin and of a harder material for providing improved haptic and hygienic properties, for supporting the soft comfortable material, i.e., the second portion, and/or for allowing the provision of, e.g., additional fastening means for, e.g., securing, preferably releasably and interchangeably securing, a patient interface component to a patient interface frame.
  • a patient interface according to the present invention preferably exhibits advanced comfort to a wearer due to its light weight and the second parts material properties, which are preferably visco-elastic.
  • the method and tool according to the present invention particularly provide for an effective and efficient manufacturing of an improved patient interface or patient interface component having a improved characteristics.
  • the hardness and geometry of the patient interface or patient interface component may be easily adjusted or individualized without the need of an exchange of expensive tool components. Rather, e.g., a first, second, third and/or fourth mold part may be easily replaced or exchanged in order to adjust the above-listed characteristics wherein the remaining mold part(s) can be maintained.
  • the production of an improved patient interface or patient interface component with improved properties as regards comfort etc. is achieved in an easy and cheap manner in an automized process.
  • the present invention allows an improved production of harmonized and exchangeable modules for patient interfaces wherein the interface measures are maintained while only features relevant for the individual improvement of the patient interface or patient interface component are adjusted.
  • the present invention particularly and preferably has the advantageous effect that it allows the provision of an improved manufacturing process and that, e.g. during production gripping or handling sections are comolded integrally with the first and/or second molded part.
  • These gripping or handling parts can preferably be used for demolding the patient interface component and/or for handling the patient interface component during subsequent manufacturing and/or assembly steps.
  • the gripping or handling parts are preferably being provided on the harder, non-foamed first part.
  • the gripping or handling parts are adapted to be easily removed when they are not needed any more.
  • such gripping or handling parts comprise a predetermined breaking point zone. Additionally and/or alternatively, the gripping or handling parts are provided on the first molded part.
  • these gripping or handling parts at least partly, constitute part of the contact surface.
  • the second material is foamed on or over the gripping or handling parts provided on the first molded part.
  • the structure of the component of the present invention and particularly of the contact region or merging surface allows an improved filling and/or venting of the foaming tool.
  • the present invention preferably advantageously allows an easy and efficient production of the first part with high tolerances and low requirements or restrictions as regards the quality of the contact region or merging surface since this surface will be contacted and thus covered by the foamed second part.
  • the preferred structure, e.g., a plane-, u-, cup- or elbow-shaped structure, of the merging surface of the first part allows to easily heal deficiencies in the optical appearance of the foamed second material.
  • the preferred structures of the first part allow, e.g., to cover voids, vent structures and/or the like of the first part and/or foamed second part while at the same time allowing a secure and advanced integral connection between the first and second part.
  • the present invention particularly allows to manufacture one part molded with different hardness zones and/or different functionalities for use as, e.g., forehead pads (e.g., higher hardness for the attachment mechanism to the mask and lower hardness towards the patient), support portions of a headband or string, or an enhanced cushion to be attached to standard or harmonized frame interfaces.
  • forehead pads e.g., higher hardness for the attachment mechanism to the mask and lower hardness towards the patient
  • support portions of a headband or string e.g., higher hardness for the attachment mechanism to the mask and lower hardness towards the patient
  • an enhanced cushion to be attached to standard or harmonized frame interfaces.
  • the present invention furthermore allows to optimize the structure of a patient interface and patient interface component, respectively, based on e.g. different material characteristics.
  • the soft, preferably visco-elastic, foam can be used for providing a cushion for in combination with a portion of higher hardness for supporting the cushion, hidden behind and covering the back of the cushion.
  • This is also combinable with hard contact or fastening or support area(s) towards a mask frame for attachment of the component to the mask.
  • the production of such patient interface component is achieved in an effective and efficient manner.
  • the present invention allows to co-mold a foamed low hardness undercushion to a high hardness support, preferably in one tool.
  • a foamed low hardness undercushion to a high hardness support, preferably in one tool.
  • one of the two parts, such as the foamed second part comprises coloured particles so that is has a predefined visual appearance.
  • the present invention allows to manufacture such multi characteristic patient interface or patient interface component in one part and in one tool. At the same time it allows to be fitted to existing, non-modified frames.
  • connection or merging surface between the first and second part.
  • the tool according to the present invention is built as a tool on a turn table machine.
  • the present invention allows to adjust the hardness/geometry of the foamed undercushion by changing only one mold half in the tool. It thus allows for anthropometrical adjustments in the tool with limited effort and/or costs.
  • a patient interface component for a breathing mask comprising a receiving opening which in the position of application of the breathing mask coincides at least with the nose and/or mouth opening region of a user of the mask, and a sealing lip which is formed from an elastomer material and which extends around the receiving opening and which in the application position fits on the surface of the face of the user of the mask.
  • Said patient interface component may comprise zones of thickened and/or reduced cross-section.
  • the patient interface according to the invention can be of such a nature that it can be fitted for example by way of a peripheral edge portion in sealing relationship to a dish-shaped or arch-shaped body in the form of a hard shell member. That makes it possible for the mask pad device to be removed from the hard shell member for cleaning, replacement, and/or adaptation purposes.
  • the patient interface component is also possible for the patient interface component to be formed integrally with the dish-shaped or arch-shaped body. That avoids the formation of a gap region between the patient interface or interface component and the dish-shaped or arch-shaped body.
  • the patient interface component can be so designed that the radial cross-sections, that is to say preferably the cross-sections of the mask pad device, vary.
  • the above-described patient interface component forms a component part of a patient interface such as a breathing mask which, in the application position, engages over the nose and/or the mouth region of the user of a mask. It can be used in a corresponding configuration in relation to a nasal mask and also in relation to a mouth or full-face mask.
  • the configuration according to the invention of the cross-section of the elastomer structures can also be used in relation to a forehead contact element.
  • forehead contact pads it is possible for forehead contact pads to be of such a configuration that the deformation characteristics thereof are imparted by foamed components.
  • Method of manufacturing a component of a patient interface, particularly a cushion comprising the steps of molding a first part of the component and foaming a second part on the first part.
  • Method according to any one of the preceding aspects further comprising the step of handling the first part, the second part and/or the component, wherein the first part constitutes the handling structure.
  • Method of producing a component of a patient interface comprising the following steps: providing a molding tool having a first mold part and a second mold part which are adapted to define a first mold cavity there between; providing, preferably injecting, a first material into the first molding tool in order to provide a first part of the component; removing the first part from the first cavity; providing a third mold and a fourth mold part adapted to define a second mold cavity between them; inserting the first part into the second cavity; and providing a second foamed material into the second mold cavity in order to provide a foamed second part integral with the first part.
  • Method according to any one of the preceding aspects further comprising the step of foaming the second material, preferably inside the second mold cavity and/or prior to providing the second material into the second mold cavity.
  • Method according to any one of the preceding aspects wherein the hardness of the first part is higher than the hardness of the second part.
  • Method according to any one of the preceding aspects wherein the second part is visco-elastic.
  • Method according to any one of the preceding aspects wherein the second material is co-molded to the first portion.
  • Method according to any one of the preceding aspects wherein first part removed from the first mold part and the second mold part and inserted into a third mold part and/or a fourth mold part, thereby defining, preferably in combination with the third mold part and/or the fourth mold part, a second cavity for foaming on a second part on the first part.
  • first and/or second material comprises a color, preferably a differing color.
  • a third mold part and/or a fourth mold part having at least one pressure rim structure and wherein the pressure rim structure(s) is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
  • a first mold part and/or a second mold part are provided having at least one negative pressure rim structure and wherein the molded first part comprises at least one pressure rim structure molded by the negative pressure rim structure(s) of the first and/or second part.
  • mold parts having a sealing means, preferably a silicone sealing lip and/or silicone sealing ring defining at least one pressure rim which is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
  • a sealing means preferably a silicone sealing lip and/or silicone sealing ring defining at least one pressure rim which is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
  • Component of a patient interface particularly a cushion, comprising a first part and a second part, wherein the second part is made of a foamed material which is foamed-on the first part.
  • Component according to the previous aspect wherein the first part has a hardness greater than the hardness of the second part.
  • the second part is a foam, e.g., polyurethane foam or silicone foam.
  • the first part is a plastic material, preferably a polymer or a thermoplastic elastomer, which is preferably elastic or hard.
  • the merging or contact surface of the first part is a plane, angled or U-shaped surface structure along at least a portion of the component's circumference, and wherein the second component is foamed-on the first part such that it at least partly merges at the contact or merging surface.
  • the first portion comprises a thin membrane having a thickness of preferably about 0.1 to 1 mm and more preferably of about 0.35 mm.
  • the component forms a cushion or an undercushion of a patient interface and wherein the second part forms the cushion or under-cushion, and wherein the first part forms a support structure that is adapted to be connected, preferably releasably connected, to a frame of the patient interface.
  • the contact area between the first and second part is a substantially plane surface and/or a surface having a substantially plane cross-section.
  • Component according to any one of the previous aspects constituting a face mask cushion, a forehead pad, and/or a component of a headband for securing a device at a wearer's head.
  • Component according to any one of the previous aspects comprising a pressing flange on the first part, wherein the pressing flange, preferably at least partly, defines the boundary of the merging surface.
  • Tool for manufacturing a component according to any one of the previous aspects and/or for performing a method according to any one of the previous aspects comprising first mold part, a second mold part, a third mold part and a fourth mold part, wherein the first mold part and the second mold part are adapted to define a first cavity, wherein a first part is moldable in the first cavity, and wherein the third mold part, the molded first part and/or the fourth mold part are adapted to define a second cavity, and wherein one or more pressure flange(s) is are provided integrally with the third mold part, the fourth mold part and/or the molded first part.
  • pressure-flange(s) is/are adapted for sealingly contacting the third mold part, the first part and/or the fourth mold part such that the merging surface between the first part and the second part to be molded in the second cavity is defined by the pressure flange.
  • first mold cavity is adapted to be filled with a first material in a first molding, preferably injection molding, step and wherein the second mold cavity is adapted to contain the first part and to be filled with a second foamed material.
  • the third and/or fourth mold part comprise a sealing means, preferably an O-ring or sealing lip seated in a groove provided in the third and/or fourth mold part, wherein the merging surface between the first part and the second part to be molded in the second cavity is defined by the sealing means.
  • a breathing mask comprising: a component according to any one of the previous aspects and/or a component manufactured by a method according to any one of the previous aspects or by a tool according to any one of the previous aspects.
  • FIG. 1 is a schematic three-dimensional cross-sectional view of a patient interface component of the present invention, here a patient interface cushion with a support structure;
  • FIG. 2 shows a schematic view of the cross-section of the component according to in FIG. 1 ;
  • FIG. 3 shows a schematic three-dimensional cross-sectional view of another embodiment of a patient interface component according to the present invention, here a patient interface cushion with a support structure;
  • FIG. 4 shows a schematic view of the cross-section of the component according to FIG. 3 ;
  • FIG. 5 shows a three-dimensional schematic view of a component according to the present invention, here a patient interface cushion with a support structure;
  • FIGS. 6 a to 6 d show preferred embodiments of components according to the present invention wherein FIGS. 6 a and 6 b show preferred embodiments of the component according to the present invention in combination with further structures of a patient's interface component, here a breathing mask and wherein FIGS. 6 c and 6 d show further preferred embodiments of the component according to the present invention.
  • FIG. 1 shows a three-dimensional schematic cross-sectional view of a patient interface structure or component 1 according to the present invention.
  • the patient interface structure comprises a first part 2 and a second part 3 wherein the second part 3 is made of a foamed material which is foamed on the first part 2 .
  • the first part 2 and the second part 3 integrally merge at a merging surface 5 ( 5 a, 5 b ) which constitutes the contact area between the first part 2 and the second part 3 .
  • the first part 2 constitutes a frame or a support portion wherein the second part 3 constitutes a cushion or under cushion portion of the patient interface.
  • the patient interface component 1 according to the present invention, and preferably its first portion 2 preferably comprises structural fastening or connection means 4 for connecting the patient interface component 1 to a patient interface structure such as a breathing mask or a mask frame.
  • the second part 3 is made of or comprises a foamed material or a foam material, preferably silicone foam or polyurethane foam.
  • the first part 2 preferably is or comprises a plastic material such as a polymer, or thermoplastic elastomer.
  • the first part 2 has a greater hardness than the second part 3 .
  • the material of the second part 3 has greater elasticity and/or viscoelastisity than the material of the first part 2 .
  • FIG. 2 shows a schematic cross-sectional view of the cross section shown on the right hand side in FIG. 1 .
  • the contact or merging surface 5 between the first part 2 and the second part 3 comprises two distinct surface portions 5 a, 5 b which are inclined toward to another by an angle, preferably of about 90°, and form a contiguous contact zone or merging surface 5 .
  • the first part (first molded part) 2 is molded in a first mold cavity between a first mold part (not shown) and a second mold part (not shown).
  • the first molded part 2 is removed from the mold and is inserted into a second cavity formed or to be formed between a third mold part 7 and a fourth mold part 9 .
  • the third mold part 7 and the fourth mold part 9 define a second cavity between them.
  • the first molded part 2 is located in said second cavity wherein the second cavity is larger than the first molded part 2 .
  • This remaining cavity is also referred to a second cavity herein.
  • a part of the wall of said second cavity is defined by the first part 2 contained between the third mold part 7 and/or the fourth mold part 9 .
  • Said second cavity being for molding the second part 3 .
  • the second cavity and thus the second part 3 preferably has varying dimensions and measures, particularly along the circumference of the patient interface, and/or the contact surface 5 preferably has varying dimensions and measures, particularly along the circumference of the patient interface. This is shown, e.g. in FIG. 1 .
  • the third mold part, the fourth mold part or any further mold parts according to the present invention can be constituted by one, two or more individual parts.
  • the fourth mold part 9 can be defined by two mold parts 9 a and 9 b (not shown).
  • the fourth mold part 9 and/or the third mold part 7 comprise a pressure-flange 11 for sealingly contacting the first molded part 2 contained in the second cavity between the third mold part 7 and the fourth mold part 9 .
  • the pressure flange(s) is(are) designed and arranged such that it(they) defines (define) the contact of merging surface 5 on the first part 2 of the patient interface component 1 .
  • the second cavity for molding the second part 3 of the patient interface component 1 is sealed against the first molded part so that a contact or merging surface 5 is defined forming part of the walls of the second cavity for molding the second part 3 of the patient interface 1 .
  • At least one pressure flange 11 and preferably two pressure flanges 11 ( 11 a , 11 b ) is/are provided on the third mold part 7 , the fourth mold part 9 and/or the first part 2 .
  • a pressure flange 11 is provided on the first part 2 this is preferably achieved by providing a negative form of the pressure flange 11 in the first mold part and/or the second mold part such that the pressure flange 11 is molded integrally with the first part 2 .
  • the pressure flange(s) 11 allow forming of a second cavity by sealing the first part 2 , and particularly the merging surface 5 of the first part 2 against the third and/or fourth mold part.
  • the second cavity is then filled with a foamed material for forming the second part 3 .
  • a second material and/or a foaming agent are provided into the second cavity such that the second cavity is filled with a foamed or foaming material that contacts and merges with the first part 2 at merging or contact surface 5 .
  • the contact or merging surface 5 can be a surface lying in one plane, or, as shown, e.g., in FIGS. 1 and 2 , a surface having surface portions lying in two or more planes.
  • a third mold art 7 and a fourth mold part 9 have been schematically and exemplarily indicated.
  • the third mold half 7 is shown to comprise a pressure flange 11 , preferably two pressure flanges 11 a and 11 b, which sealingly contact(s) the first part 2 .
  • Each pressure flange 11 is arranged and designed such that it defines a, or part of a, contact or merging surface 5 .
  • each pressure flange 11 is of a continuous structure such that there is defined an enclosed, clearly defined individual contact or merging surface 5 on the first part 2 .
  • the pressure flange(s) have a continuous, ring like shape so that a continuous boundary of the merging surface 5 is defined. This can also be achieved by providing two or more pressure flanges which supplement one another to define such merging surface.
  • merging surface 5 is of ring like shape, and is preferably defined by two ring like pressure flanges.
  • two endless or loop-like pressure flanges 11 a and 11 b extending all around the circumference of a molded first part 2 and define between them the contact or merging surface 5 .
  • This is of particular advantage for molding a patient interface components as shown in FIG. 1 , 3 , or 5 (discussed below) which are of generally circular, oval or triangular but generally ring-like shape.
  • the pressure rim or pressure flange has a ring-like structure enclosing, inside said structure, the merging surface 5 .
  • the patient interface component does not need to be generally ring-shaped, e.g., in case of a forehad cushion or a headband support.
  • pressure rim or pressure flange 11 can also be provided on the fourth mold half 9 .
  • the pressure flange or pressure rim 11 preferably seals the second mold cavity against the first part 2 .
  • the second mold cavity is defined by the contact or merging surface 5 of the first part 2 and surface portions of the first mold part 7 and/or the third mold part 9 .
  • at least one of the pressure flanges has an interruption, particularly in order to provide, e.g., a sprue or a venting structure.
  • FIGS. 3 and 4 basically corresponds to the embodiment discussed above with regard to FIGS. 1 and 2 . It is thus referred to the above discussion.
  • the embodiment shown in FIGS. 3 and 4 differs from the embodiment discussed above e.g. with regard to the structure and design of the contact surface 5 .
  • the shape and structure of the contact surface 5 may vary along its length, here along the circumference of the patient interface component.
  • a contact surface 5 (here referred to as 5 c ) is a plane surface. Compared thereto, on the right hand side in FIG.
  • a contact surface 5 comprises different surface sections referred to as 5 d, 5 e, 5 f, 5 g, 5 h.
  • the contact or merging surface 5 on the right hand side of FIG. 3 has a U-shaped structure with flange portions 5 d, 5 h at the opening of the U.
  • contact surface 5 on the right hand side of the embodiment shown in FIG. 3 comprises a depression or groove 6 defined by surface portions 5 e, 5 f and 5 g.
  • such structure or merging surface 5 can be manufactured by using a tool comprising a third mold half 7 and a fourth mold half 9 wherein the third mold half 7 comprises a pressure rim 11 d for sealingly contacting the first molded part 2 and defining one border or boundary of contact surface 5 .
  • Fourth mold half 9 comprises a second pressure rim 11 c for sealingly contacting the first part 2 and defining a second border or boundary of contact surface 5 .
  • the pressure rim(s) 11 provided on one or more of the mold halves and/or the first part 2 is/are a thin, preferably sharp rim or protrusion.
  • Pressure flange(s) 11 is/are pressed against and into the material of the first part 2 and/or the mold halves in order to sealingly define the second cavity as discussed above.
  • Pressure flange(s) 11 is/are either pressed against and into the molded first part 2 by pressing a mold part 9 and thus the pressure flange(s) against the first part 2 .
  • one or more pressure flange(s) 11 sealingly abut(s) the first part 2 since it/they already form part of the third mold part 7 in which the first part 2 is inserted.
  • the pressure flange protrudes from the remainder of the mold halves surfaces.
  • the pressure rim has a tapered or pointed configuration.
  • the shape and arrangement of the contact or merging surface is preferably adapted to apply certain structural features being advantageous for the molding process, the tool design and/or the final product, e.g. a patient interface component.
  • the design of the merging surface 5 changes along the circumference of the first part 2 , preferably in order to exhibit certain functionalities and advantages discussed herein at predefined positions of a wearer's face.
  • a contact or merging surface 5 comprising two angled surface components, such as surface portions 5 a and 5 b shown in FIGS. 1 and 2 , allows a clear positioning of the second part with respect to the first part and thus with respect to the remainder of the patient interface.
  • the first part 2 defines a connection structure for connecting the second part 3 , preferably an under-cushion of a patient interface, to the face mask thereby facilitating guidance, connectability, exchangeability, individualizeability etc. of the patient interface component and thus the patient interface according to the present invention.
  • This preferably allows a decoupling of the softer second part 3 from the mask body by means of the first molded part 2 serving as an adapter.
  • the design of the contact or merging surface 5 is chosen to influence the hardness, elasticity and support functionality of the patient interface component and particularly of the foamed second part 3 , preferably constituting a patient interface under-cushion.
  • contact surface shapes as shown in FIG. 2 or FIG. 4 allow a foaming of the second part 3 onto the first part 2 such that any potentially hygienically and/or optically deteriorated parts or surfaces of the foamed second part 3 are hidden and sealed by the merging surface 5 , e.g. in the corner of merging surface portions 5 a and 5 b according to FIG. 2 or in the recess 6 formed by surface portions 5 f, 5 g, 5 h according to FIG. 4 .
  • the mold parts constituting the second mold cavity for forming the foamed second part 3 are designed and arranged such, e.g. with regard to gravity, that any potentially deteriorated and/or visually or hygienically disadvantageous part of the foamed second part and/or the merging surface 5 is covered or sealed as discussed above.
  • venting structures 13 are formed into the first molded part 2 , preferably while molding the first part 2 .
  • the respective venting structures or channels are provided in or at the contact or merging surface 5 and, preferably, in or at those portions discussed above as being suitable for hiding and sealing certain parts of the second part.
  • a venting structure 13 is exemplary depicted as being provided in merging surface portion 5 f in groove 6 .
  • pressure flange 11 can also be constituted by the provision of a sealing means or sealing ring, made of, e.g. silicone material.
  • a sealing means or sealing ring made of, e.g. silicone material.
  • such sealing ring preferably in the form of, e.g. a sealing lip, a flexible sealing means, an O-ring or the like, is attached to the third and/or fourth mold part(s) by the provision of a fastening groove for attaching said sealing means to the third mold part and/or fourth mold part.
  • This embodiment comprising one or more silicone sealing structures or rings constituting pressure flange(s) is particularly preferred for manufacturing a second part 3 made of polyurethane foam.
  • the pressure rim(s) are provided on the first part 2 for sealingly contacting the fourth mold part 9 .
  • the pressure flange(s) 11 is/are part of the molded first part 2 . This is preferably achieved by providing a first and/or second groove or recess of the negative shape of the pressure flange 11 in the first mold part 7 and/or the second mold part so that the molded first part integrally comprises the pressure flange 11 .
  • the first molded part 2 is designed such that it comprises a membrane forming a sealing lip for sealingly contacting a user's skin.
  • FIG. 6 a shows a component according to the present invention comprising a first molded part 2 and a second foamed part 3 being attached to a mask frame 14 . Further attached to mask frame 14 is a membrane 15 which extends over second foamed part 3 .
  • membrane 15 and/or component 1 are releasably attached to mask frame 14 by means of respective fastening means (not shown).
  • membrane 15 extends over component 1 so that when the breathing mask is worn by a patient, membrane 15 contacts the user's skin wherein the mask is supported on the user's skin by means of component 1 , i.e., foamed second part 3 constituting a mask cushion or undercushion which is held or supported by means of first molded part 2 which is connected to the breathing mask via mask frame 14 .
  • component 1 i.e., foamed second part 3 constituting a mask cushion or undercushion which is held or supported by means of first molded part 2 which is connected to the breathing mask via mask frame 14 .
  • membrane 15 is a silicone membrane.
  • FIG. 6 b shows the use of a component 1 according to the present invention similar to the embodiment discussed with regard to FIG. 6 a .
  • membrane 15 is releasably attached to frame 14 wherein membrane 15 supports, covers, protects, and/or extends over component 1 .
  • membrane 15 according to FIG. 6 b comprises a cavity or recess 16 which preferably allows a good gliding and dampening function of membrane 15 .
  • Membrane 15 also comprises an abutment surface 17 which preferably supportingly abuts against component 1 .
  • FIG. 6 c shows a first part 2 inserted in third mold half 7 .
  • Mold part 2 as a generally u-shaped contour in the cross-section according to FIG. 6 c , wherein the ends of the generally u-shaped contour of first element 2 are bent.
  • merging surface 5 d and 5 h are formed.
  • at least one bent or bent end of the generally u-shaped contour of first element 2 extends beyond a second foam part 3 .
  • a respective extension 18 is indicated in FIG. 6 c . It will be apparent for the person skilled in the art that a respective extension can be formed on both ends of u-shaped contour of first element 2 . Additionally and/or alternatively, a respective configuration can also be achieved with the embodiment shown in FIG. 7 .
  • Extension 18 provides an additional advantageous possibility to apply a pressure rim (not shown in FIG. 6 c ) to define merging surface 5 h and to prevent foam or second foamed part 3 to extend beyond boundary point/line 19 .
  • first part 2 is arranged in the upper part of the tool whereas second foamed part 3 constitutes the lower part of the tool. Accordingly, the foam constituting of building second foamed part 3 will build up from the lower part of the cavity (which is the upper end of second foamed part 3 according to FIG. 6 c ) and be build up or filled up to first molded part 2 .
  • first part 2 and/or second part 3 preferably comprise the same or different colour pigments allowing to indicate, e.g., different sizes and/or structural features of component 1 .
  • second part 2 comprises venting structures 13 which can be used for venting and/or filling of the second cavity for molding or foaming the second foamed part 3 .
  • the present invention particularly the method according to the present invention and the tool according to the present invention allow an advantageous foaming of a second part on a first part which has been proven to be either not possible or disadvantageous as discussed in the introductory portion of the specification.
  • material to be foamed or foamed material is generally a liquid material having a low viscosity and is formed under pressure so that the achievement of a reliable easy, efficient and effective seal in accordance with the present invention is of great advantage.
  • Such material to be foamed or foamed material furthermore generally exhibits sticky characteristics.
  • the present invention it is of advantage in order to avoid the production of deficient parts or clogging of the mold parts.
  • the present invention moreover or alternatively allows improved connection and/or mounting of the foamed second part.
  • the foaming of the second part on the first molded part preferably provides improved tolerances and/or sealing properties of the molded first and/or part against the remaining mask components and/or a patient's face.
  • the present invention additionally or alternatively allows selective stiffening or reinforcing of the foamed second part by designing the first molded part and/or the merging surface accordingly. This leads to improved sealing properties of a patient interface component in line with the present invention.
  • the present invention allows improved automating of production and particularly of the deforming of the foamed part and subsequent manufacturing steps such as flash removing.
  • the filling and/or venting of the second cavity is improved.
  • the present invention preferably alternatively or additionally allows the application of colour, such as coloured codes, to the molded parts, such as the foamed second part.
  • automation of the assembly and hiding of defects is allowed.

Abstract

Component of a patient interface, particularly a cushion, comprising a first part and a second part, wherein the second part is made of a foamed material which is foamed-on the first part. A Method and tool for manufacturing a component of a patient interface, particularly a cushion, comprising the steps molding a first part of the component and foaming a second part on the first part.

Description

  • The invention relates to patient interfaces such as breathing masks covering nose and/or mouth of a patient and components or structures thereof as well as to methods for manufacturing such patient interfaces or components thereof and further relates to tools for manufacturing the same. Furthermore, the present invention relates to cushions, pads, supporting structures and/or sealing structures, such as mask cushions or forehead pads etc. for a patient interface such as a breathing mask. Moreover, the present invention relates to a patient interface or component of a patient interface obtainable by a method according to the present invention as well as to a tool for producing such interface or component and/or for performing a respective method.
  • The invention concerns, in particular, a pad or cushion and a patient interface such as a breathing mask which is equipped with such pad or cushion. An internal space of a breathing mask is established by the patient interface in conjunction with sealing contact of the pad or cushion with the surface of the face of a user. This internal space is sealed in relation to the ambient atmosphere in such a way that a pressure which is preferably increased in relation to the ambient pressure can be obtained, e.g. in phase-wise fashion, in the internal space of the patient interface or breathing mask. Breathing masks of that kind are used in particular in connection with the medical or therapeutic administration of breathable gases and also in the technical sector, for example in the sector of breathing apparatus technology, and particularly for CPAP and BiPAP therapy. The invention further concerns a sealing, contact and/or support structure and a process and tool for the production thereof in general.
  • Usually, with such patient interfaces, the sealing action in relation to the surface of the face of the user of the interface is achieved by a sealing lip structure. Such sealing lip structure, e.g., extends in inwardly directed relationship around an opening of the mask, and is made from an elastically deformable material.
  • The sealing action achieved with sealing lips of that kind generally increases with the pressure with which the sealing lip is pressed against the surface of the face. In the case of comparatively high contact pressures, in particular long-term use of breathing masks of that kind can give rise to troubles.
  • Patient interfaces and patient interface structures or components, e.g., sealing lips, are known in the prior art, for example, in the field of face masks for delivering breathable air to a patient. In such face masks, often hollow cushions or bent, resilient lip-structures are used for providing contact zones for contacting the face of the user in order to avoid dents and to improve wearing comfort of the user. Furthermore, such structures are used as a sealing structure for sealing the mask interior from the exterior in the contact region where the mask rests on a user's face.
  • A disadvantage of structures known in the art is that they are complicated to manufacture and a number of manual manufacturing steps is often necessary. Often a number of different parts is manufactured wherein the parts are provided with connection structures and have to be assembled to form the final product.
  • For examples, breathing masks are known which comprise an individually molded part made of polyurethane foam which is loosely fitted into the mask frame for constituting part of a face mask cushion. However, this kind of assembly requires providing structures in the mask seal, the mask body or both that allow for a mechanical linkage between these at least two components. This typically requires the use of additional materials to form different parts of a mask structure, increases the complexity of the design as well as the manufacture of the mask. This leads to limitations in design due to the requirements of providing connection structures, and requires a complex hand assembly or hand manipulation for assembling the mask etc.
  • The solutions known in the prior art are in particular, not easy to handle, not durable, complicated and expensive to manufacture, not suitable for automating, not bio-compatible as well as optically and hygienically objectionable. The known solutions are further disadvantageous in that they do not or insufficiently allow individualization and are less comfortable for a wearer, particularly with regard to material properties such as weight and hardness.
  • WO 2007/009182A1 refers to a respiratory mask and a method for manufacturing a respiratory mask comprising a first component formed from a material that is more rigid than the flexible material, wherein the first component is formed onto the second component by an over molding process.
  • WO 03/105921A2 relates to a mask cushioning and forehead pad for a respiratory mask, and a method for its production comprising a mask cushioning having zones with an increased cross section that are configured in the mask cushioning, wherein the mask cushioning material in said zones has different material properties in such a way that the Shore hardness of the mask cushioning in the boarder region is higher than in the core region. Although, this disclosure is advantageous in that it provides a one piece hygienic component, it still suffers from the above disadvantageous, particularly from limitations in the design of the sealing structures and from complex manufacturing methods.
  • It is an object underlying the present invention to provide a patient interface or a component of a patient interface, such as a cushion or pad, a method for manufacturing such patient interface and/or component as well as a tool for manufacturing the same which overcome the deficiencies of the prior art. Alternatively or additionally, it is an object underlying the present invention to provide a patient interface or component thereof which has an improved sealing effect and/or an improved level of wearing comfort. Alternatively or additionally, it is an object underlying the present invention to provide a method for manufacturing a patient interface or component thereof and/or a tool for manufacturing the same which allows efficient and effective production and handling of improved patient interfaces and/or components thereof.
  • These objects are fulfilled with the features of the claims wherein dependent claims relate to preferred features of the present invention.
  • The present invention relates to a patient interface structure or component, e.g., a breathing mask and components thereof. Such components are, e.g., a pad or a cushion for supporting and/or sealingly supporting a breathing mask or patient interface on a user's skin. Moreover, the present invention relates to a method and tool for manufacturing a patient interface or patient interface component, particularly those according to the present invention.
  • According to the present invention, a component of a patient interface, such as a face mask, and in particular a patient interface cushion comprises a first part and a second part, wherein the second part is made of a foamed material which is foamed-on the first part. The first and second parts are preferably parallelly and/or subsequently co-molded. Preferably, the first and second part have a different hardness wherein the first part is molded in a first step and wherein the second part is subsequently molded-on or foamed-on the first part. Preferably, the first part is made of a hard material, particularly with regard to the second material, and the second material is made of a soft material, particularly with regard to the first material. Preferably, the first material is harder than the second material.
  • Preferably, foaming-on of the second part to the first part and the co-molding of the first part and the second part results in the first and second part being formed integrally with one another.
  • The method and tool according to present invention particularly allow to mold a foamed part on or onto another part in an easy, reliable, efficient and effective manner. In particular, the present invention does not require that a component of a first part and a foamed second part are formed by ‘surrounding’ the first part by a foamed material wherein the first part constitutes a core. Preferably, there is no positive locking or form closure needed for foaming or molding the second material to the first material.
  • According to a further alternative or additional aspect, the present invention relates to a component of a patient interface, such as a breathing mask, and in particular to a patient interface cushion comprising a support structure, such as a frame-component and a cushion or undercushion for supporting the interface on a patient's face. Preferably, the component further comprises a membrane, particularly for sealing the cushion against a users face.
  • According to a preferred aspect of the present invention, the first part and the second part integrally merge at a merging or contact surface constituting the contact area between said two parts. Said merging surface preferably is a substantially plane surface and/or a surface having a substantially plane cross-section. Preferably, the merging or contact surface comprises at least two distinct surface portions. Preferably, the merging or contact surface comprises a first surface portion and the second surface portion wherein the first surface portion and the second surface portion are inclined towards one another.
  • Preferably, the merging or contact surface has a plane, an elbow-shaped, u-shaped, recessed, cup-like, and/or hook-shaped profile at least at a part of its cross-section. Preferably, the merging or contact surface does not have undercuts. Also preferably, the first portion and second portion solely merge via such merging surface and/or are not connected by means of structural or mechanical fastening means. Preferably, the contact surface of the first material comprises bores and/or cavities which are at least partly filled by the second material when foaming the second material on the first material.
  • According to a preferred embodiment, the component of a patient interface according to the present invention is a breathing mask cushion for sealingly supporting a breathing mask on a wearer's face, a forehead pad for supporting a breathing mask on a wearer's face, part of a headband for securing a device such as a breathing mask to a wearer's head or other parts or components for contacting a wearer's body.
  • Preferably, such interface comprises a thin membrane for sealingly contacting a user's skin and an undercushion being thicker than the the membrane and being arranged—when viewed from the patient—under or behind said membrane. Preferably, the second part according to the present invention constitutes such undercushion wherein the first part is adapted to support the second portion and to connect it to a patient interface frame. Preferably, the first part also comprises the membrane being integrally formed therewith or being, preferably releasably, attached thereto.
  • Thus, preferably, the membrane forms an outer portion of the patient interface (cushion) for, preferably sealingly, contacting a wearer's skin wherein the second part or undercushion is shielded vis-à-vis the wearer's skin by the membrane and is attached, preferably releasably, to the patient interface by means of the first part. Thus, the second part preferably does not directly contact the wearer's skin.
  • Preferably, a patient interface component, here e.g. a mask cushion, comprises a membrane or sealing lip portion and a cushion or undercushion comprising a connection portion for connecting it to a mask frame. The membrane or sealing lip portion is preferably an independent, non-integral part which is individually connected to the mask frame. According to an alternative preferred embodiment, the membrane or sealing lip portion is co-molded and integrally formed with support portions of the patient interface, such as, e.g., the mask frame and/or the first part according to the preset invention. The mask cushion or undercushion comprises a cushion portion and a connection portion. Preferably, the connection portion corresponds to the first part as referred to herein wherein the cushion portion corresponds to the second part as referred to herein. The connecting portion or the first part and the cushion portion or second part of the component, respectively, form a merging surface or contact area along which the first and second part merge. The second part is made of a foam or a foamed material. Preferably, the second part is co-molded to or foamed-on the first part along the contact area or merging surface.
  • The component according to the invention preferably forms an undercushion of a breathing mask cushion which is shielded or covered vis-à-vis a wearer by a membrane or sealing lip portion which at least partially extends along and over undercushion portion, respectively, when assembled to a mask frame.
  • Preferably, the second part is located in the mask interior oriented or facing towards the outside environment of the mask or towards a wearer, respectively whereas the first part of the mask cushion is located in the mask interior oriented or facing towards the inside of the mask or or away from a wearer, respectively.
  • Preferably, the first part is not or does not comprise a foam or foamed material wherein the second part is made of or comprises a foamed material. Preferably, the first part has a first material characteristic and the second part has a second material characteristic different from the first material characteristic. Preferably, said characteristic is hardness. Preferably, the (first) hardness of the first part is higher than the (second) hardness of the second part.
  • Preferred materials are resilient or elastic materials allowing application of different hardnesses. According to a preferred embodiment, the first part comprises a polymer, e.g., a polysiloxane; silicone; liquid silicone rubber, and/or thermoplastic elastomer. According to a preferred embodiment, the second part comprises foamed materials, e.g., foamed silicone and/or foamed polyurethane. Preferably, the second part is made of a material having visco-elastic properties.
  • The breathing mask cushion and patient interface, respectively, preferably comprises a longitudinal axis extending generally perpendicular to a contact plane in which the cushion or interface substantially contacts a wearer. Preferably, at least a portion of the contact region or merging surface between the first part and the second part is parallel with regard to said axis and/or said contact plane in which the cushion or interface substantially contacts a wearer. Preferably, the contact region comprises one or more, at least two and preferably three distinct portions. According to a preferred embodiment the contact region is directed towards one side of the first/second part only. Preferably, the second part does not surround or include the first part or portions thereof. Preferably, the contact region, the first part and/or the second part are generally ring shaped. The ring can be closed or can be open, i.e. a ring-segment. The method and tool according to the present invention particularly allow to foam the second part on the first part from one side only and onto substantially plane surfaces, generally to any surface of the first part.
  • In addition or alternatively, the present invention relates to a method for producing a component of a patient interface or a patient interface, respectively. In particular, the method according to the present invention relates to the production of a patient interface or component of a patient interface, such as a breathing mask cushion, as discussed and disclosed in the present application. A preferred method according to the present invention comprises the steps of providing a molding tool having a first mold part and a second mold part which are adapted to define a first mold cavity therebetween for molding a first part of said patient interface or patient interface component. A first material having first material characteristics, such as a first hardness, is injected into the first molding tool and into the first cavity defined thereby in order to provide the first part of the component. After said first material has been injected into the first cavity and has at least partially solidified or fully solidified the first mold cavity is opened and the first part is removed. Preferably, the molded first part is ejected or removed from the first mold part and is provided into a second cavity formed between at least a third and a fourth mold part. The third and fourth mold parts are designed and arranged so that the second mold cavity is established, as discussed above. The second cavity is larger than the first molded part so that a cavity is formed between the third mold part, the fourth mold part, and/or the first molded part.
  • A second material having a second material characteristic, such as a second hardness, is then fed into the second mold cavity in order to provide a second part integral with the first part. The second material is provided as a foam or foamed material. This includes that the second material is introduced or fed into the second cavity in a foamed state and/or that the second material is foamed inside the second cavity, e.g., by mans of a foaming agent. Preferably, the second material is provided or fed into the second cavity at elevated pressure and/or resulting in an elevated pressure in the second cavity, e.g. by means of the foaming agent.
  • Preferably, as discussed above with regard to the patient interface or patient interface component according to the present invention, the first material characteristic and the second material characteristic, such as the first hardness and the second hardness, differ from one another wherein, preferably, the first hardness is larger than the second hardness.
  • The mold parts are preferably arranged around a turntable. After the first part has been molded, preferably injection molded, the first molded part is removed from the first mold cavity and the first mold part is provided into the second mold cavity by turning of the turntable and by placing it in a defined position in relation to the third and fourth mold part so that it is positioned in the second cavity. Then, the second part is molded.
  • After the second molding step with which the second material of the second part has been provided or fed into the second cavity is finalized the tool is opened and the patient interface component can be ejected or withdrawn from the tool.
  • According to a further aspect of the present invention, there is provided a tool for manufacturing a patient interface or a patient interface component as discussed in the present application and/or for performing a method as discussed in the present application. Aspects of such tool have already been discussed in combination with the patient interface component or the method of the invention.
  • Such tool preferably comprises a first mold part and a second mold part which are adapted to define a first mold cavity therebetween. There is further provided a third mold part and a fourth mold part adapted to define a second mold cavity therebetween and/or between the first part of a patient interface component and the third and/or fourth mold part.
  • Preferably, the first and second mold part define walls of said first cavity whereas the third mold part, the fourth mold part and/or the first molded part define walls of said second cavity. The wall of said second cavity is preferably partly formed by or comprises the merging surface or contact region formed by the first molded part of the patient interface component.
  • The third mold part, the fourth mold part and/or the first molded part preferably comprise at least one pressure-flange for sealing the second cavity and preferably the first part against the third mold part and/or the fourth mold part.
  • Preferably, the one or more pressure flange(s) is/are designed and arranged such that it/they define(s) the merging surface on the first part of the patient interface component. Thus, the second cavity for molding the second part of the patient interface component is sealed against the first molded part so that a contact or merging surface is defined forming part of the walls of the second cavity for molding the second part of the patient interface on the first part at the merging surface.
  • In a preferred embodiment where at least one pressure flange is provided on the first nolded part this is preferably achieved by providing a negative form of the pressure flange by the first cavity, preferably in the first mold part and/or the second mold part such that the pressure flange is molded integrally with the first molded part. The pressure flange(s) allow forming of a second cavity by sealing the first molded part, and particularly the merging surface of the first molded part against the third and or fourth mold parts, respectively.
  • Preferably, the first and second mold part providing the first cavity constitute an injection molding mold wherein the third and fourth mold part providing the second cavity constitute a foaming mold.
  • Alternatively and/or additionally to the embodiments discussed above, the pressure flange(s) is/are preferably constituted by the provision of a sealing ring, made of, e.g. silicone material. Preferably, such sealing ring, e.g. in the form of an O-ring or the like, is attached to the third and/or fourth mold part(s) by the provision of a fastening groove for attaching said ring type pressure flange to the third mold part and/or fourth mold part. This embodiment comprising one or more silicone sealing rings constituting one or more pressure flange(s) is particularly preferred for manufacturing a second molded part made of polyurethane foam.
  • The present invention is of particular advantage in that it provides an improved patient interface and patient interface component such as a breathing mask cushion with enhanced characteristics. In particular, the patient interface and patient interface component according to the present invention allows improved comfort for a wearer and avoids reddening and pressure marks occurring on a wearer's face. Moreover, the present invention allows the provision of special and interchangeable geometries and properties of a patient interface and a patient interface component for improved compliance with a user's physiognomy and anthropometry. The present invention particularly allows efficient and effective production of improved patient interfaces and/or components and an automated production. Moreover, optically and hygienically as well as structurally improved patient interfaces and patient interface components can be provided. In particular, individualization and comfortable wearing of such improved patient interfaces and patient interface components is allowed by the technology discussed and disclosed in this application. Preferably, the present invention additionally or alternatively allows the provision of an improved usability of the molded product, particularly by allowing the provision of a supporting structure integrally combined with a softer, foamed part.
  • For example the use of a first and second molded part allows the provision of a soft and comfortable material for e.g. comfortably supporting a patient interface on a users skin and of a harder material for providing improved haptic and hygienic properties, for supporting the soft comfortable material, i.e., the second portion, and/or for allowing the provision of, e.g., additional fastening means for, e.g., securing, preferably releasably and interchangeably securing, a patient interface component to a patient interface frame. A patient interface according to the present invention preferably exhibits advanced comfort to a wearer due to its light weight and the second parts material properties, which are preferably visco-elastic.
  • The method and tool according to the present invention particularly provide for an effective and efficient manufacturing of an improved patient interface or patient interface component having a improved characteristics. Also, the hardness and geometry of the patient interface or patient interface component may be easily adjusted or individualized without the need of an exchange of expensive tool components. Rather, e.g., a first, second, third and/or fourth mold part may be easily replaced or exchanged in order to adjust the above-listed characteristics wherein the remaining mold part(s) can be maintained. Moreover, the production of an improved patient interface or patient interface component with improved properties as regards comfort etc. is achieved in an easy and cheap manner in an automized process. Also, the present invention allows an improved production of harmonized and exchangeable modules for patient interfaces wherein the interface measures are maintained while only features relevant for the individual improvement of the patient interface or patient interface component are adjusted.
  • The present invention particularly and preferably has the advantageous effect that it allows the provision of an improved manufacturing process and that, e.g. during production gripping or handling sections are comolded integrally with the first and/or second molded part. These gripping or handling parts can preferably be used for demolding the patient interface component and/or for handling the patient interface component during subsequent manufacturing and/or assembly steps. The gripping or handling parts are preferably being provided on the harder, non-foamed first part. Preferably, the gripping or handling parts are adapted to be easily removed when they are not needed any more. Preferably, such gripping or handling parts comprise a predetermined breaking point zone. Additionally and/or alternatively, the gripping or handling parts are provided on the first molded part. Preferably, these gripping or handling parts, at least partly, constitute part of the contact surface. Preferably, the second material is foamed on or over the gripping or handling parts provided on the first molded part. Thus, the present invention allows an improved and automated manufacturing process. In particular, the present invention allows to handle the first part by means of a handling part, e.g. from the first cavity to the second cavity, wherein the handling part is subsequently covered by the second
  • The structure of the component of the present invention and particularly of the contact region or merging surface allows an improved filling and/or venting of the foaming tool. Moreover, the present invention preferably advantageously allows an easy and efficient production of the first part with high tolerances and low requirements or restrictions as regards the quality of the contact region or merging surface since this surface will be contacted and thus covered by the foamed second part. Furthermore, the preferred structure, e.g., a plane-, u-, cup- or elbow-shaped structure, of the merging surface of the first part allows to easily heal deficiencies in the optical appearance of the foamed second material. In particular, the preferred structures of the first part allow, e.g., to cover voids, vent structures and/or the like of the first part and/or foamed second part while at the same time allowing a secure and advanced integral connection between the first and second part.
  • The present invention particularly allows to manufacture one part molded with different hardness zones and/or different functionalities for use as, e.g., forehead pads (e.g., higher hardness for the attachment mechanism to the mask and lower hardness towards the patient), support portions of a headband or string, or an enhanced cushion to be attached to standard or harmonized frame interfaces.
  • The present invention furthermore allows to optimize the structure of a patient interface and patient interface component, respectively, based on e.g. different material characteristics. Thus, e.g., the soft, preferably visco-elastic, foam can be used for providing a cushion for in combination with a portion of higher hardness for supporting the cushion, hidden behind and covering the back of the cushion. This is also combinable with hard contact or fastening or support area(s) towards a mask frame for attachment of the component to the mask. At the same time, the production of such patient interface component is achieved in an effective and efficient manner.
  • According to preferred embodiments, the present invention allows to co-mold a foamed low hardness undercushion to a high hardness support, preferably in one tool. There is provided, e.g., a low hardness and vino-elastic separately molded foamed silicone undercushion and a high hardness, preferably thin, support structure. Preferably, one of the two parts, such as the foamed second part comprises coloured particles so that is has a predefined visual appearance. Preferably, the present invention allows to manufacture such multi characteristic patient interface or patient interface component in one part and in one tool. At the same time it allows to be fitted to existing, non-modified frames. The use of foam or a foamed material as the second part is of particular advantage since it also allows, although not required, the provision of, preferably small, undercuts in the connection or merging surface between the first and second part. An advantageous, effective and strong but small connection zone or merging surface or design, particularly reduced in size, is achieved.
  • Preferably, the tool according to the present invention is built as a tool on a turn table machine. The present invention allows to adjust the hardness/geometry of the foamed undercushion by changing only one mold half in the tool. It thus allows for anthropometrical adjustments in the tool with limited effort and/or costs.
  • In accordance with an aspect of the present invention there is provided a patient interface component for a breathing mask comprising a receiving opening which in the position of application of the breathing mask coincides at least with the nose and/or mouth opening region of a user of the mask, and a sealing lip which is formed from an elastomer material and which extends around the receiving opening and which in the application position fits on the surface of the face of the user of the mask. Said patient interface component may comprise zones of thickened and/or reduced cross-section.
  • In that way it is advantageously possible to provide a mask pad device which is distinguished by particularly high adaptability to the most widely varying individual face structures.
  • The patient interface according to the invention can be of such a nature that it can be fitted for example by way of a peripheral edge portion in sealing relationship to a dish-shaped or arch-shaped body in the form of a hard shell member. That makes it possible for the mask pad device to be removed from the hard shell member for cleaning, replacement, and/or adaptation purposes.
  • As an alternative to the measure described hereinbefore it is also possible for the patient interface component to be formed integrally with the dish-shaped or arch-shaped body. That avoids the formation of a gap region between the patient interface or interface component and the dish-shaped or arch-shaped body.
  • The patient interface component can be so designed that the radial cross-sections, that is to say preferably the cross-sections of the mask pad device, vary.
  • The above-described patient interface component forms a component part of a patient interface such as a breathing mask which, in the application position, engages over the nose and/or the mouth region of the user of a mask. It can be used in a corresponding configuration in relation to a nasal mask and also in relation to a mouth or full-face mask.
  • The configuration according to the invention of the cross-section of the elastomer structures can also be used in relation to a forehead contact element. Thus, in accordance with a further and also alternative concept, it is possible for forehead contact pads to be of such a configuration that the deformation characteristics thereof are imparted by foamed components.
  • Although the present application discusses the provision/production of a first molded part and a second molded part it is apparent for the person skilled in the art that also third and further molded parts having individual characteristics may be provided/produced.
  • Additional and/or alternative preferred embodiments of the present invention are directed to the following aspects.
  • Method of manufacturing a component of a patient interface, particularly a cushion, comprising the steps of molding a first part of the component and foaming a second part on the first part.
  • Method according to any one of the preceding aspects, further comprising the step of handling the first part, the second part and/or the component, wherein the first part constitutes the handling structure.
  • Method of producing a component of a patient interface, particularly according to any one of the preceding aspects, comprising the following steps: providing a molding tool having a first mold part and a second mold part which are adapted to define a first mold cavity there between; providing, preferably injecting, a first material into the first molding tool in order to provide a first part of the component; removing the first part from the first cavity; providing a third mold and a fourth mold part adapted to define a second mold cavity between them; inserting the first part into the second cavity; and providing a second foamed material into the second mold cavity in order to provide a foamed second part integral with the first part.
  • Method according to any one of the preceding aspects, further comprising the step of foaming the second material, preferably inside the second mold cavity and/or prior to providing the second material into the second mold cavity.
  • Method according to any one of the preceding aspects, wherein the hardness of the first part is higher than the hardness of the second part. Method according to any one of the preceding aspects, wherein the second part is visco-elastic.
  • Method according to any one of the preceding aspects, wherein the second material is co-molded to the first portion. Method according to any one of the preceding aspects, wherein first part removed from the first mold part and the second mold part and inserted into a third mold part and/or a fourth mold part, thereby defining, preferably in combination with the third mold part and/or the fourth mold part, a second cavity for foaming on a second part on the first part.
  • Method according to any one of the preceding aspects, wherein the first and/or second material comprises a color, preferably a differing color.
  • Method according to any one of the preceding aspects, wherein a third mold part and/or a fourth mold part are provided having at least one pressure rim structure and wherein the pressure rim structure(s) is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
  • Method according to any one of the preceding aspects, wherein a first mold part and/or a second mold part are provided having at least one negative pressure rim structure and wherein the molded first part comprises at least one pressure rim structure molded by the negative pressure rim structure(s) of the first and/or second part.
  • Method according to any one of the preceding aspects, wherein mold parts are provided having a sealing means, preferably a silicone sealing lip and/or silicone sealing ring defining at least one pressure rim which is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
  • Component of a patient interface, particularly a cushion, comprising a first part and a second part, wherein the second part is made of a foamed material which is foamed-on the first part. Component according to the previous aspect, wherein the first part has a hardness greater than the hardness of the second part.
  • Component according to and one of the previous aspects, wherein the second part is a foam, e.g., polyurethane foam or silicone foam.
  • Component according to any one of the previous aspects, wherein the first part is a plastic material, preferably a polymer or a thermoplastic elastomer, which is preferably elastic or hard.
  • Component according to any one of the previous aspects, wherein the merging or contact surface of the first part is a plane, angled or U-shaped surface structure along at least a portion of the component's circumference, and wherein the second component is foamed-on the first part such that it at least partly merges at the contact or merging surface.
  • Component according to any one of the previous aspects, wherein the first portion comprises a thin membrane having a thickness of preferably about 0.1 to 1 mm and more preferably of about 0.35 mm.
  • Component according to any one of the previous aspects, wherein the component forms a cushion or an undercushion of a patient interface and wherein the second part forms the cushion or under-cushion, and wherein the first part forms a support structure that is adapted to be connected, preferably releasably connected, to a frame of the patient interface.
  • Component according to any one of the previous aspects, wherein the contact area between the first and second part is a substantially plane surface and/or a surface having a substantially plane cross-section.
  • Component according to any one of the previous aspects, constituting a face mask cushion, a forehead pad, and/or a component of a headband for securing a device at a wearer's head.
  • Component according to any one of the previous aspects, comprising a pressing flange on the first part, wherein the pressing flange, preferably at least partly, defines the boundary of the merging surface.
  • Component according to any one of the previous aspects, manufactured according to a method according to any one of the preceding aspects.
  • Tool for manufacturing a component according to any one of the previous aspects and/or for performing a method according to any one of the previous aspects, comprising first mold part, a second mold part, a third mold part and a fourth mold part, wherein the first mold part and the second mold part are adapted to define a first cavity, wherein a first part is moldable in the first cavity, and wherein the third mold part, the molded first part and/or the fourth mold part are adapted to define a second cavity, and wherein one or more pressure flange(s) is are provided integrally with the third mold part, the fourth mold part and/or the molded first part.
  • Tool according to any one of the previous aspects, wherein pressure-flange(s) is/are adapted for sealingly contacting the third mold part, the first part and/or the fourth mold part such that the merging surface between the first part and the second part to be molded in the second cavity is defined by the pressure flange.
  • Tool according to any one of the previous aspects, wherein the first mold cavity is adapted to be filled with a first material in a first molding, preferably injection molding, step and wherein the second mold cavity is adapted to contain the first part and to be filled with a second foamed material.
  • Tool according to any one of the previous aspects, wherein the third and/or fourth mold part comprise a sealing means, preferably an O-ring or sealing lip seated in a groove provided in the third and/or fourth mold part, wherein the merging surface between the first part and the second part to be molded in the second cavity is defined by the sealing means.
  • A breathing mask comprising: a component according to any one of the previous aspects and/or a component manufactured by a method according to any one of the previous aspects or by a tool according to any one of the previous aspects.
  • Use of a tool according to any one of the previous aspects to perform a method according to any one of the previous aspects and/or for manufacturing a component according to any one of the previous aspects.
  • Other aspects, features, and advantages of this invention will become apparent from the following detailed description when taken in conjunction with the accompanying drawings, which are a part of this disclosure and which illustrate, by way of example, principles of the invention.
  • The accompanying drawings facilitate an understanding of the various embodiments of this invention. In such drawings:
  • FIG. 1 is a schematic three-dimensional cross-sectional view of a patient interface component of the present invention, here a patient interface cushion with a support structure;
  • FIG. 2 shows a schematic view of the cross-section of the component according to in FIG. 1;
  • FIG. 3 shows a schematic three-dimensional cross-sectional view of another embodiment of a patient interface component according to the present invention, here a patient interface cushion with a support structure;
  • FIG. 4 shows a schematic view of the cross-section of the component according to FIG. 3;
  • FIG. 5 shows a three-dimensional schematic view of a component according to the present invention, here a patient interface cushion with a support structure; and
  • FIGS. 6 a to 6 d show preferred embodiments of components according to the present invention wherein FIGS. 6 a and 6 b show preferred embodiments of the component according to the present invention in combination with further structures of a patient's interface component, here a breathing mask and wherein FIGS. 6 c and 6 d show further preferred embodiments of the component according to the present invention.
  • The following description is provided in relation to several embodiments which may share common characteristics and features. It is to be understood that one or more features of any one embodiment may be combinable with one or more features of the other embodiments. In addition, each single feature or combination of features in any of the embodiments may constitute an additional embodiment.
  • In this specification, the word “comprising” is to be understood in its “open” sense, that is, in the sense of “including”, and thus not limited to its “closed” sense, that is the sense of “consisting of”. A corresponding meaning is to be attributed to the corresponding words “comprise”, “comprised” and “comprises” where they appear.
  • In accordance with the present invention, FIG. 1 shows a three-dimensional schematic cross-sectional view of a patient interface structure or component 1 according to the present invention. The patient interface structure comprises a first part 2 and a second part 3 wherein the second part 3 is made of a foamed material which is foamed on the first part 2. The first part 2 and the second part 3 integrally merge at a merging surface 5 (5 a, 5 b) which constitutes the contact area between the first part 2 and the second part 3. According to the embodiment shown in FIG. 1, the first part 2 constitutes a frame or a support portion wherein the second part 3 constitutes a cushion or under cushion portion of the patient interface. The patient interface component 1 according to the present invention, and preferably its first portion 2, preferably comprises structural fastening or connection means 4 for connecting the patient interface component 1 to a patient interface structure such as a breathing mask or a mask frame.
  • The second part 3 is made of or comprises a foamed material or a foam material, preferably silicone foam or polyurethane foam. The first part 2 preferably is or comprises a plastic material such as a polymer, or thermoplastic elastomer. Preferably, the first part 2 has a greater hardness than the second part 3. Furthermore, preferably, the material of the second part 3 has greater elasticity and/or viscoelastisity than the material of the first part 2.
  • FIG. 2 shows a schematic cross-sectional view of the cross section shown on the right hand side in FIG. 1. As shown in FIGS. 1 and 2 the contact or merging surface 5 between the first part 2 and the second part 3 comprises two distinct surface portions 5 a, 5 b which are inclined toward to another by an angle, preferably of about 90°, and form a contiguous contact zone or merging surface 5.
  • During manufacturing, the first part (first molded part) 2 is molded in a first mold cavity between a first mold part (not shown) and a second mold part (not shown). After molding of the first part 2, the first molded part 2 is removed from the mold and is inserted into a second cavity formed or to be formed between a third mold part 7 and a fourth mold part 9. Preferably, the third mold part 7 and the fourth mold part 9 define a second cavity between them. Preferably, the first molded part 2 is located in said second cavity wherein the second cavity is larger than the first molded part 2. Thus, once the first molded part 2 is inserted into the cavity formed between the third and fourth mold part and the third and fourth mold parts are closed still a cavity remains. This remaining cavity is also referred to a second cavity herein. Preferably, a part of the wall of said second cavity is defined by the first part 2 contained between the third mold part 7 and/or the fourth mold part 9. Said second cavity being for molding the second part 3.
  • The second cavity and thus the second part 3 preferably has varying dimensions and measures, particularly along the circumference of the patient interface, and/or the contact surface 5 preferably has varying dimensions and measures, particularly along the circumference of the patient interface. This is shown, e.g. in FIG. 1.
  • Generally, it is to be noted that the third mold part, the fourth mold part or any further mold parts according to the present invention can be constituted by one, two or more individual parts. For example, in the embodiment shown in FIG. 2, the fourth mold part 9 can be defined by two mold parts 9 a and 9 b (not shown).
  • The fourth mold part 9 and/or the third mold part 7 comprise a pressure-flange 11 for sealingly contacting the first molded part 2 contained in the second cavity between the third mold part 7 and the fourth mold part 9.
  • Preferably, the pressure flange(s) is(are) designed and arranged such that it(they) defines (define) the contact of merging surface 5 on the first part 2 of the patient interface component 1. Thus, the second cavity for molding the second part 3 of the patient interface component 1 is sealed against the first molded part so that a contact or merging surface 5 is defined forming part of the walls of the second cavity for molding the second part 3 of the patient interface 1.
  • Additionally or alternatively, at least one pressure flange 11, and preferably two pressure flanges 11 (11 a, 11 b) is/are provided on the third mold part 7, the fourth mold part 9 and/or the first part 2. In a preferred embodiment, where a pressure flange 11 is provided on the first part 2 this is preferably achieved by providing a negative form of the pressure flange 11 in the first mold part and/or the second mold part such that the pressure flange 11 is molded integrally with the first part 2. The pressure flange(s) 11 allow forming of a second cavity by sealing the first part 2, and particularly the merging surface 5 of the first part 2 against the third and/or fourth mold part.
  • The second cavity is then filled with a foamed material for forming the second part 3. Preferably, a second material and/or a foaming agent are provided into the second cavity such that the second cavity is filled with a foamed or foaming material that contacts and merges with the first part 2 at merging or contact surface 5.
  • The contact or merging surface 5 can be a surface lying in one plane, or, as shown, e.g., in FIGS. 1 and 2, a surface having surface portions lying in two or more planes. In FIG. 2, a third mold art 7 and a fourth mold part 9 have been schematically and exemplarily indicated. The third mold half 7 is shown to comprise a pressure flange 11, preferably two pressure flanges 11 a and 11 b, which sealingly contact(s) the first part 2. Each pressure flange 11 is arranged and designed such that it defines a, or part of a, contact or merging surface 5. Preferably, each pressure flange 11 is of a continuous structure such that there is defined an enclosed, clearly defined individual contact or merging surface 5 on the first part 2. Preferably, the pressure flange(s) have a continuous, ring like shape so that a continuous boundary of the merging surface 5 is defined. This can also be achieved by providing two or more pressure flanges which supplement one another to define such merging surface. Preferably, merging surface 5 is of ring like shape, and is preferably defined by two ring like pressure flanges.
  • Preferably there will be provided two endless or loop- like pressure flanges 11 a and 11 b extending all around the circumference of a molded first part 2 and define between them the contact or merging surface 5. This is of particular advantage for molding a patient interface components as shown in FIG. 1, 3, or 5 (discussed below) which are of generally circular, oval or triangular but generally ring-like shape. Alternatively, the pressure rim or pressure flange has a ring-like structure enclosing, inside said structure, the merging surface 5. In such case, the patient interface component does not need to be generally ring-shaped, e.g., in case of a forehad cushion or a headband support.
  • Alternatively, pressure rim or pressure flange 11 can also be provided on the fourth mold half 9.
  • The pressure flange or pressure rim 11 preferably seals the second mold cavity against the first part 2. Thus, the second mold cavity is defined by the contact or merging surface 5 of the first part 2 and surface portions of the first mold part 7 and/or the third mold part 9. Preferably, at least one of the pressure flanges has an interruption, particularly in order to provide, e.g., a sprue or a venting structure.
  • The embodiment shown in FIGS. 3 and 4 basically corresponds to the embodiment discussed above with regard to FIGS. 1 and 2. It is thus referred to the above discussion. The embodiment shown in FIGS. 3 and 4 differs from the embodiment discussed above e.g. with regard to the structure and design of the contact surface 5. As can be seen in the cross-sectional view according to FIG. 3, the shape and structure of the contact surface 5 may vary along its length, here along the circumference of the patient interface component. As shown on the left hand side in FIG. 3, a contact surface 5 (here referred to as 5 c) is a plane surface. Compared thereto, on the right hand side in FIG. 3 a contact surface 5 comprises different surface sections referred to as 5 d, 5 e, 5 f, 5 g, 5 h. In its general structure, the contact or merging surface 5 on the right hand side of FIG. 3 has a U-shaped structure with flange portions 5 d, 5 h at the opening of the U. In other words, contact surface 5 on the right hand side of the embodiment shown in FIG. 3 comprises a depression or groove 6 defined by surface portions 5 e, 5 f and 5 g.
  • As shown in FIG. 4, such structure or merging surface 5 can be manufactured by using a tool comprising a third mold half 7 and a fourth mold half 9 wherein the third mold half 7 comprises a pressure rim 11 d for sealingly contacting the first molded part 2 and defining one border or boundary of contact surface 5. Fourth mold half 9 comprises a second pressure rim 11 c for sealingly contacting the first part 2 and defining a second border or boundary of contact surface 5.
  • The discussions provided above with regard to the definition of the second cavity or the structure of the tool etc. also apply to the embodiment shown in FIGS. 3 and 4.
  • According to the present invention, the pressure rim(s) 11 provided on one or more of the mold halves and/or the first part 2 is/are a thin, preferably sharp rim or protrusion. Pressure flange(s) 11 is/are pressed against and into the material of the first part 2 and/or the mold halves in order to sealingly define the second cavity as discussed above. Pressure flange(s) 11 is/are either pressed against and into the molded first part 2 by pressing a mold part 9 and thus the pressure flange(s) against the first part 2. Additionally or alternatively, one or more pressure flange(s) 11 sealingly abut(s) the first part 2 since it/they already form part of the third mold part 7 in which the first part 2 is inserted.
  • Preferably, the pressure flange protrudes from the remainder of the mold halves surfaces. Preferably, the pressure rim has a tapered or pointed configuration.
  • The shape and arrangement of the contact or merging surface is preferably adapted to apply certain structural features being advantageous for the molding process, the tool design and/or the final product, e.g. a patient interface component. According to a preferred embodiment, the design of the merging surface 5 changes along the circumference of the first part 2, preferably in order to exhibit certain functionalities and advantages discussed herein at predefined positions of a wearer's face. For example, a contact or merging surface 5 comprising two angled surface components, such as surface portions 5 a and 5 b shown in FIGS. 1 and 2, allows a clear positioning of the second part with respect to the first part and thus with respect to the remainder of the patient interface. For example, according to a preferred embodiment, the first part 2 defines a connection structure for connecting the second part 3, preferably an under-cushion of a patient interface, to the face mask thereby facilitating guidance, connectability, exchangeability, individualizeability etc. of the patient interface component and thus the patient interface according to the present invention. This preferably allows a decoupling of the softer second part 3 from the mask body by means of the first molded part 2 serving as an adapter.
  • Alternatively or additionally, the design of the contact or merging surface 5 is chosen to influence the hardness, elasticity and support functionality of the patient interface component and particularly of the foamed second part 3, preferably constituting a patient interface under-cushion.
  • Furthermore, contact surface shapes as shown in FIG. 2 or FIG. 4 allow a foaming of the second part 3 onto the first part 2 such that any potentially hygienically and/or optically deteriorated parts or surfaces of the foamed second part 3 are hidden and sealed by the merging surface 5, e.g. in the corner of merging surface portions 5 a and 5 b according to FIG. 2 or in the recess 6 formed by surface portions 5 f, 5 g, 5 h according to FIG. 4. Preferably, the mold parts constituting the second mold cavity for forming the foamed second part 3 are designed and arranged such, e.g. with regard to gravity, that any potentially deteriorated and/or visually or hygienically disadvantageous part of the foamed second part and/or the merging surface 5 is covered or sealed as discussed above.
  • According to a further preferred embodiment of the present invention, venting structures 13 are formed into the first molded part 2, preferably while molding the first part 2. Preferably, the respective venting structures or channels are provided in or at the contact or merging surface 5 and, preferably, in or at those portions discussed above as being suitable for hiding and sealing certain parts of the second part. E.g., in FIG. 4, a venting structure 13 is exemplary depicted as being provided in merging surface portion 5 f in groove 6.
  • Alternatively and/or additionally to the embodiments discussed above, pressure flange 11 can also be constituted by the provision of a sealing means or sealing ring, made of, e.g. silicone material. Preferably, such sealing ring, preferably in the form of, e.g. a sealing lip, a flexible sealing means, an O-ring or the like, is attached to the third and/or fourth mold part(s) by the provision of a fastening groove for attaching said sealing means to the third mold part and/or fourth mold part. This embodiment comprising one or more silicone sealing structures or rings constituting pressure flange(s) is particularly preferred for manufacturing a second part 3 made of polyurethane foam.
  • According to a preferred embodiment, the pressure rim(s) are provided on the first part 2 for sealingly contacting the fourth mold part 9. In this case, the pressure flange(s) 11 is/are part of the molded first part 2. This is preferably achieved by providing a first and/or second groove or recess of the negative shape of the pressure flange 11 in the first mold part 7 and/or the second mold part so that the molded first part integrally comprises the pressure flange 11.
  • According to a preferred embodiment, the first molded part 2 is designed such that it comprises a membrane forming a sealing lip for sealingly contacting a user's skin.
  • FIG. 6 a shows a component according to the present invention comprising a first molded part 2 and a second foamed part 3 being attached to a mask frame 14. Further attached to mask frame 14 is a membrane 15 which extends over second foamed part 3. Preferably, membrane 15 and/or component 1 (comprising first molded part 2 and second part 3) are releasably attached to mask frame 14 by means of respective fastening means (not shown). Preferably, membrane 15 extends over component 1 so that when the breathing mask is worn by a patient, membrane 15 contacts the user's skin wherein the mask is supported on the user's skin by means of component 1, i.e., foamed second part 3 constituting a mask cushion or undercushion which is held or supported by means of first molded part 2 which is connected to the breathing mask via mask frame 14. Preferably, membrane 15 is a silicone membrane.
  • FIG. 6 b shows the use of a component 1 according to the present invention similar to the embodiment discussed with regard to FIG. 6 a. As with the embodiment shown in FIG. 6 a, membrane 15 is releasably attached to frame 14 wherein membrane 15 supports, covers, protects, and/or extends over component 1. Contrary to the embodiment shown in FIG. 6 a, membrane 15 according to FIG. 6 b comprises a cavity or recess 16 which preferably allows a good gliding and dampening function of membrane 15. Membrane 15 also comprises an abutment surface 17 which preferably supportingly abuts against component 1.
  • FIG. 6 c shows a first part 2 inserted in third mold half 7. Mold part 2 as a generally u-shaped contour in the cross-section according to FIG. 6 c, wherein the ends of the generally u-shaped contour of first element 2 are bent. Thus, corresponding to the embodiment shown and discussed with regard to FIG. 4, merging surface 5 d and 5 h are formed. Preferably, at least one bent or bent end of the generally u-shaped contour of first element 2 extends beyond a second foam part 3. A respective extension 18 is indicated in FIG. 6 c. It will be apparent for the person skilled in the art that a respective extension can be formed on both ends of u-shaped contour of first element 2. Additionally and/or alternatively, a respective configuration can also be achieved with the embodiment shown in FIG. 7.
  • Extension 18 provides an additional advantageous possibility to apply a pressure rim (not shown in FIG. 6 c) to define merging surface 5 h and to prevent foam or second foamed part 3 to extend beyond boundary point/line 19.
  • With regard to gravity, when foaming second part 3 onto first part 2, first part 2 is arranged in the upper part of the tool whereas second foamed part 3 constitutes the lower part of the tool. Accordingly, the foam constituting of building second foamed part 3 will build up from the lower part of the cavity (which is the upper end of second foamed part 3 according to FIG. 6 c) and be build up or filled up to first molded part 2.
  • As already indicated, first part 2 and/or second part 3 preferably comprise the same or different colour pigments allowing to indicate, e.g., different sizes and/or structural features of component 1.
  • The preferred embodiment according to FIG. 6 d generally corresponds to the one discussed with regard to FIG. 6 c wherein extensions 18 are provided on both ends of first parts 2 generally u-shaped contour. In addition, second part 2 comprises venting structures 13 which can be used for venting and/or filling of the second cavity for molding or foaming the second foamed part 3.
  • The present invention, particularly the method according to the present invention and the tool according to the present invention allow an advantageous foaming of a second part on a first part which has been proven to be either not possible or disadvantageous as discussed in the introductory portion of the specification. In this context, it is particularly to be noted that material to be foamed or foamed material is generally a liquid material having a low viscosity and is formed under pressure so that the achievement of a reliable easy, efficient and effective seal in accordance with the present invention is of great advantage. Such material to be foamed or foamed material furthermore generally exhibits sticky characteristics. Thus, the present invention it is of advantage in order to avoid the production of deficient parts or clogging of the mold parts. Thus, according to the present invention, there is no need to cut off or stamp out certain parts of the foamed material or to clean any remaining surfaces of the mold parts or the first molded part.
  • The present invention moreover or alternatively allows improved connection and/or mounting of the foamed second part. The foaming of the second part on the first molded part preferably provides improved tolerances and/or sealing properties of the molded first and/or part against the remaining mask components and/or a patient's face. Preferably, the present invention additionally or alternatively allows selective stiffening or reinforcing of the foamed second part by designing the first molded part and/or the merging surface accordingly. This leads to improved sealing properties of a patient interface component in line with the present invention. Correspondingly, the present invention allows improved automating of production and particularly of the deforming of the foamed part and subsequent manufacturing steps such as flash removing. Preferably, also the filling and/or venting of the second cavity is improved. The present invention preferably alternatively or additionally allows the application of colour, such as coloured codes, to the molded parts, such as the foamed second part. Correspondingly, automation of the assembly and hiding of defects is allowed.
  • While the invention has been described in connection with what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Also, the various embodiments described above may be implemented in conjunction with other embodiments, e.g., aspects of one embodiment may be combined with aspects of another embodiment to realize yet other embodiments. Further, each independent feature or component of any given assembly may constitute an additional embodiment. In addition, while the invention has particular application to patients who suffer from sleep disordered breathing such as OSA, it is to be appreciated that patients who suffer from other illnesses (e.g., congestive heart failure, diabetes, morbid obesity, stroke, bariatric surgery, etc.) can derive benefit from the above teachings. Moreover, the above teachings have applicability with patients and non-patients alike in non-medical applications.

Claims (16)

1. Method of manufacturing a component of a patient interface, particularly a cushion, comprising the steps:
molding a first part of the component and foaming a second part on the first part.
2. Method according to claim 1, further comprising the steps:
handling the first part, the second part and/or the component, wherein the first part constitutes and/or comprises the handling structure.
3. Method of producing a component of a patient interface, particularly according to claim 1, comprising the following steps:
a) providing a molding tool having a first mold part and a second mold part which are adapted to define a first mold cavity there between;
b) providing, preferably injecting, a first material into the first molding tool in order to provide a first part of the component;
c) removing the first part from the first cavity;
d) providing a third mold and a fourth mold part adapted to define a second mold cavity between them;
e) inserting the first part into the second cavity;
f) providing a second foamed material into the second mold cavity in order to provide a foamed second part integral with the first part.
4. Method according to claim 1, wherein the hardness of the first part is higher than the hardness of the second part.
5. Method according to claim 1, wherein first part removed from the first mold part and the second mold part and inserted into a third mold part and/or a fourth mold part, thereby defining, preferably in combination with the third mold part and/or the fourth mold part, a second cavity for foaming on a second part on the first part.
6. Method according to claim 1, wherein a third mold part and/or a fourth mold part are provided having at least one pressure rim structure and wherein the pressure rim structure(s) is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
7. Method according to claim 1, wherein a first mold part and/or a second mold part are provided having at least one negative pressure rim structure and wherein the molded first part comprises at least one pressure rim structure molded by the negative pressure rim structure(s) of the first and/or second part.
8. Method according to claim 1, wherein mold parts are provided having a sealing means, preferably a silicone sealing lip and/or silicone sealing ring defining at least one pressure rim which is/are sealingly pressed against the first part for defining a merging surface on the first part and/or for sealingly defining a second cavity.
9. Component of a patient interface, particularly a cushion, comprising a first part and a second part, wherein the second part is made of a foamed material which is foamed-on the first part.
10. Component according to claim 9, wherein the second part is a foam, e.g., polyurethane foam or silicone foam and/or wherein the first part is a plastic material, preferably a polymer or a thermoplastic elastomer, which is preferably elastic or hard.
11. Component according to claim 9, wherein the merging or contact surface of the first part is a plane, angled or U-shaped surface structure along at least a portion of the component's circumference, and wherein the second component is foamed-on the first part such that it at least partly merges at the contact or merging surface.
12. Component according to claim 9, constituting a face mask cushion, a forehead pad, and/or a component of a headband for securing a device at a wearer's head.
13. Component according to claim 9, comprising a pressing flange on the first part, wherein the pressing flange, preferably at least partly, defines the boundary of the merging surface.
14. Tool for manufacturing a component according to claim 9, comprising first mold part, a second mold part, a third mold part and a fourth mold part, wherein the first mold part and the second mold part are adapted to define a first cavity, wherein a first part is moldable in the first cavity, and wherein the third mold part, the molded first part and/or the fourth mold part are adapted to define a second cavity, and wherein one or more pressure flange(s) is are provided integrally with the third mold part, the fourth mold part and/or the molded first part, and wherein second mold cavity is preferably adapted to contain the first part and to be filled with a second foamed material.
15. Tool according to claim 14, wherein pressure-flange(s) is/are adapted for sealingly contacting the third mold part, the first part and/or the fourth mold part such that the merging surface between the first part and the second part to be molded in the second cavity is defined by the pressure flange.
16. Tool according to claim 14, wherein the third and/or fourth mold part comprise a sealing means, preferably an O-ring or sealing lip seated in a groove provided in the third and/or fourth mold part, wherein the merging surface between the first part and the second part to be molded in the second cavity is defined by the sealing means.
US12/656,466 2009-01-30 2010-01-29 Patient interface structure and method/tool for manufacturing same Abandoned US20100192955A1 (en)

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100101581A1 (en) * 2007-01-22 2010-04-29 Map Medizin-Technologie Gmbh Hollow structure and method/tool for manufacturing same
US8485192B2 (en) 2005-01-12 2013-07-16 Resmed Limited Cushion for patient interface
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
US8522784B2 (en) 2008-03-04 2013-09-03 Resmed Limited Mask system
US8944061B2 (en) 2005-10-14 2015-02-03 Resmed Limited Cushion to frame assembly mechanism
WO2015193408A1 (en) * 2014-06-17 2015-12-23 Resmed Limited A seal forming structure for a patient interface and a tool and method of manufacturing the seal forming structure
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
WO2017011571A1 (en) * 2015-07-14 2017-01-19 Qalo Llc Compression molded silicone ring
US9943146B2 (en) 2015-05-27 2018-04-17 Qalo Llc Compression molded silicone ring
USD823454S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD823455S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD824020S1 (en) 2017-02-23 2018-07-24 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
USD855793S1 (en) 2017-09-20 2019-08-06 Fisher & Paykel Healthcare Limited Frame for a nasal mask
US10449316B2 (en) 2012-12-13 2019-10-22 Koninklijke Philips N.V. Mask with red mark alleviating pocket
US10518054B2 (en) 2014-08-25 2019-12-31 Fisher & Paykel Healthcare Limited Respiratory mask and related portions, components or sub-assemblies
USD874646S1 (en) 2017-03-09 2020-02-04 Fisher & Paykel Healthcare Limited Headgear component for a nasal mask assembly
USD875242S1 (en) 2017-09-20 2020-02-11 Fisher & Paykel Healthcare Limited Nasal mask and breathing tube set
US10603456B2 (en) 2011-04-15 2020-03-31 Fisher & Paykel Healthcare Limited Interface comprising a nasal sealing portion
USD884153S1 (en) 2018-04-04 2020-05-12 Fisher & Paykel Healthcare Limited Frame for a mask assembly
US10786642B2 (en) 2009-01-30 2020-09-29 ResMed Pty Ltd Patient interface structure and method/tool for manufacturing same
US10821250B2 (en) 2012-11-16 2020-11-03 Fisher & Paykel Healthcare Limited Nasal seal and respiratory interface
USD901673S1 (en) 2017-03-09 2020-11-10 Fisher & Paykel Healthcare Limited Frame and breathing tube assembly for a nasal mask
US10828441B2 (en) 2011-04-15 2020-11-10 Fisher & Paykel Healthcare Limited Interface comprising a rolling nasal bridge portion
US10946155B2 (en) 2012-09-04 2021-03-16 Fisher & Paykel Healthcare Limited Valsalva mask
US10994090B2 (en) 2015-09-04 2021-05-04 Fisher & Paykel Healthcare Limited Patient interfaces
EP3831435A1 (en) * 2011-07-01 2021-06-09 Fisher & Paykel Healthcare Limited Mask's clip for overmoulding
JP2021183153A (en) * 2014-10-10 2021-12-02 レスメド・プロプライエタリー・リミテッド Foam cushion respiratory apparatus
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud
US11419999B2 (en) 2013-08-05 2022-08-23 Fisher & Paykel Healthcare Limited Seal for a patient interface, interface assemblies and aspects thereof
US11452833B2 (en) 2016-10-05 2022-09-27 Fisher & Paykel Healthcare Limited. Patient interfaces
US11529484B2 (en) * 2014-06-17 2022-12-20 ResMed Pty Ltd Seal forming portion, pad and cushion for a patient interface and method of manufacturing
US11701486B2 (en) 2014-06-17 2023-07-18 Fisher & Paykel Healthcare Limited Patient interfaces
USD1017795S1 (en) 2022-10-17 2024-03-12 Fisher & Paykel Healthcare Limited Frame of a nasal mask

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140326246A1 (en) * 2011-12-06 2014-11-06 Koninklijke Philips N.V. Cushion assembly having compression dampening portion
US10987477B2 (en) 2013-02-04 2021-04-27 ResMed Pty Ltd Respiratory apparatus
NZ777484A (en) 2013-02-04 2023-01-27 ResMed Pty Ltd Respiratory apparatus
US10004867B2 (en) 2013-02-04 2018-06-26 Resmed Limited Respiratory apparatus
USD809131S1 (en) 2014-08-04 2018-01-30 Resmed Limited Respiratory mask assembly
US10413692B2 (en) 2013-02-04 2019-09-17 ResMed Pty Ltd Cushion assembly
US10974007B2 (en) * 2019-03-07 2021-04-13 Sleepnet Corporation Facemask seal
CN111228897A (en) * 2020-02-17 2020-06-05 苏州桐力光电股份有限公司 Organosilicon porous breathable sterilizing nano filter material for mask and preparation method thereof

Citations (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125542A (en) * 1914-03-11 1915-01-19 Aubrey Humphries Apparatus for use in administering anesthetics.
US1445010A (en) * 1920-11-15 1923-02-13 William S Feinberg Breathing apparatus for swimmers
US2415846A (en) * 1944-10-23 1947-02-18 Randall Francis Eugene Oronasal mask
US2625155A (en) * 1950-12-11 1953-01-13 Arthur E Engelder Face mask
US2706983A (en) * 1951-09-15 1955-04-26 Willson Products Inc Flexible construction in respirator mask facepiece
US2931356A (en) * 1958-08-25 1960-04-05 Puritan Compressed Gas Corp Oxygen mask having detachable face seal cushion
US3848925A (en) * 1972-11-02 1974-11-19 Coach & Car Equip Corp Transit vehicle seat
US3861385A (en) * 1972-08-25 1975-01-21 Edward Carden Anaesthetist{3 s ventilation
US3938614A (en) * 1972-06-20 1976-02-17 Aktiebolaget Lennartsfors Mekaniska Verkstad Cushion member for sound-proof sealing
US4006744A (en) * 1974-06-24 1977-02-08 Abbott Laboratories Locking cannula mount
US4142527A (en) * 1977-02-07 1979-03-06 Garcia Nelson C Endotracheal tube holder
US4248218A (en) * 1978-09-22 1981-02-03 Fischer Charles M Gas administration scavenging mask
US4263908A (en) * 1979-07-25 1981-04-28 Mizerak Vladimir S Nasal cannula mask
US4264743A (en) * 1979-04-23 1981-04-28 Nhk Spring Co., Ltd. Polyurethane foam sealing material and process for producing the same
US4312359A (en) * 1980-02-19 1982-01-26 Life Care Systems, Inc. Noninvasive blood pressure measuring system
US4367816A (en) * 1981-06-10 1983-01-11 Wilkes Kenneth R Tear strip for gas sterilizable package and package
US4367735A (en) * 1979-12-31 1983-01-11 Novametrix Medical Systems, Inc. Nasal cannula
US4493614A (en) * 1982-10-08 1985-01-15 Lifecare Services, Inc. Pump for a portable ventilator
US4572323A (en) * 1983-03-28 1986-02-25 Racal Safety Limited Hearing protectors
US4641647A (en) * 1985-02-08 1987-02-10 Sheryl L. Taylor Device for securing respiratory appliance during respiratory therapy
US4660555A (en) * 1984-09-21 1987-04-28 Payton Hugh W Oxygen delivery and administration system
USD293613S (en) * 1985-11-18 1988-01-05 Anesthesia Respiratory Technology, Inc. Anesthesia and respiratory face mask
US4802857A (en) * 1987-11-23 1989-02-07 Laughlin Patrick E CPR mask
US4803981A (en) * 1981-09-22 1989-02-14 Vickery Ian M Anaesthesia mask
US4811730A (en) * 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US4899740A (en) * 1989-01-17 1990-02-13 E. D. Bullard Company Respirator system for use with a hood or face mask
US4907584A (en) * 1988-03-03 1990-03-13 Mcginnis Gerald E Respiratory mask
US4915105A (en) * 1988-10-28 1990-04-10 Lee Tien Chu Miniature respiratory apparatus
US4919654A (en) * 1988-08-03 1990-04-24 Kalt Medical Corporation IV clamp with membrane
US4919128A (en) * 1988-08-26 1990-04-24 University Technologies International Inc. Nasal adaptor device and seal
US4989599A (en) * 1989-01-26 1991-02-05 Puritan-Bennett Corporation Dual lumen cannula
US4996983A (en) * 1989-01-31 1991-03-05 Amrhein Floyd E Inhaler filtration device with housing supportable by spectacle temple
US5000173A (en) * 1987-11-19 1991-03-19 Daniel Zalkin Respiratory aid device
US5005571A (en) * 1988-11-25 1991-04-09 Dietz Henry G Mouth nose mask for use with an inhalation therapy and/or breathing monitoring apparatus
USD333015S (en) * 1991-12-02 1993-02-02 Lifecare International, Inc. Nasal mask
US5188101A (en) * 1991-11-15 1993-02-23 Tumolo Jean S Premature baby headband for supporting nasal cannulas and oxygen feed tubes
US5299599A (en) * 1992-09-17 1994-04-05 Lifecare International, Inc. Valving arrangement for a negative pressure ventilator
US5304146A (en) * 1992-10-23 1994-04-19 Johnson Melissa C Medical appliance securing device
US5385141A (en) * 1992-04-16 1995-01-31 Siebe North, Inc. Speech diaphragm and exhalation valve
US5394568A (en) * 1993-01-28 1995-03-07 Minnesota Mining And Manufacturing Company Molded head harness
US5396885A (en) * 1992-07-31 1995-03-14 Nelson; Joseph M. Mobile air supply cart having dual tanks and connections allowing simultaneous filling of tank and delivery of air to a user
US5398676A (en) * 1993-09-30 1995-03-21 Press; Roman J. Portable emergency respirator
US5400776A (en) * 1993-07-09 1995-03-28 Proprietary Technology, Inc. Apparatus for maintaining a bend in a medical insufflation tube
US5488948A (en) * 1993-09-23 1996-02-06 Intertechnique Fast donning respiratory protection equipment
US5509409A (en) * 1994-09-12 1996-04-23 The Living Trust Of Marjorie F. Weatherholt Nasal cannula assembly
US5592938A (en) * 1992-06-08 1997-01-14 Respironics Inc. Mask apparatus
US5623923A (en) * 1993-06-09 1997-04-29 Intertechnique Respiratory equipment with comfort adjustment
US5662101A (en) * 1995-12-07 1997-09-02 Respironics, Inc. Respiratory facial mask
US5704345A (en) * 1993-11-05 1998-01-06 Resmed Limited Detection of apnea and obstruction of the airway in the respiratory system
US5707342A (en) * 1995-11-24 1998-01-13 Fuji Photo Optical Co., Ltd. Protector girdle for endoscopic insertion instrument
US5724965A (en) * 1995-06-06 1998-03-10 Respironics Inc. Nasal mask
US5735272A (en) * 1997-01-22 1998-04-07 Dillon; Michael M. Nasal tube holder having a nasal dilator attached thereto
US5740799A (en) * 1993-12-21 1998-04-21 Maersk Medical A/S Device for the supply of oxygen and/or other gases to a patient
US6019101A (en) * 1996-10-31 2000-02-01 Sleepnet Corporation Nasal air mask
US6026811A (en) * 1998-03-12 2000-02-22 Settle; Romaine A. Protective cover for nasal air supply hose
US6044844A (en) * 1996-12-02 2000-04-04 Resmed Limited Mask and harness assembly
US6193914B1 (en) * 1995-11-30 2001-02-27 Ubertech Texas, Inc. Molding thermosetting polymers onto substrates
US6196223B1 (en) * 1998-04-10 2001-03-06 William A. Belfer Strapless respiratory facial mask for customizing to the wearer's face
US20020005198A1 (en) * 1996-07-26 2002-01-17 Philip Rodney Kwok Full-face mask and mask cushion therefor
US6341606B1 (en) * 1999-05-19 2002-01-29 Mallinckrodt, Inc. Disposable respiratory mask with adhesive skin interface
US6347631B1 (en) * 1999-11-09 2002-02-19 Mallinckrodt, Inc. Cantilever device and method for breathing devices and the like
US20020029780A1 (en) * 2000-06-22 2002-03-14 Frater Robert H. Mask with gusset
US6358279B1 (en) * 1999-02-22 2002-03-19 University Of Miami Minicapsulorhexis valve
US6357441B1 (en) * 1996-07-26 2002-03-19 Resmed Limited Nasal mask and mask cushion therefor
US20030000526A1 (en) * 2001-03-30 2003-01-02 Fred Gobel Method for controlling a ventilator, and system therefor
US20030019495A1 (en) * 2001-05-18 2003-01-30 Palkon David J. Mask cushion and method of using same
US6530373B1 (en) * 2000-08-04 2003-03-11 Mallinckrodt Inc. Respirator mask
US6532961B1 (en) * 1999-06-18 2003-03-18 Resmed Limited Forehead support for facial mask
US6536435B1 (en) * 1999-02-22 2003-03-25 Cabot Safety Intermediate Corporation Respirator headpiece and release mechanism
US20030168063A1 (en) * 2002-03-08 2003-09-11 Gambone Anthony Joseph Pressure face mask and nasal mask
US20030217746A1 (en) * 2000-06-14 2003-11-27 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US6679265B2 (en) * 2001-10-25 2004-01-20 Worldwide Medical Technologies Nasal cannula
US6679257B1 (en) * 1998-08-13 2004-01-20 Fisher & Paykel Limited Breathing assistance apparatus
USD485905S1 (en) * 2002-08-09 2004-01-27 Resmed Limited Nasal mask
US20040025882A1 (en) * 2000-07-21 2004-02-12 Stefan Madaus Holding device for a respiratory mask
US20040025885A1 (en) * 2002-08-09 2004-02-12 Payne, Charles E. Headwear for use by a sleep apnea patient
US20040045551A1 (en) * 2002-09-06 2004-03-11 Ric Investments, Inc. Patient interface with forehead support system
US6710099B2 (en) * 1999-02-02 2004-03-23 The Procter & Gamble Company Disposable absorbent articles with improved adhesive for attachment to the skin to facilitate water adhesion stability with low pain level removal
US20050011523A1 (en) * 2003-07-18 2005-01-20 Acoba, Llc Method and system of Individually controlling airway pressure of a patient's nares
US20050033247A1 (en) * 2003-08-06 2005-02-10 Thompson Paul S. Nasal cannula assembly
US20050028822A1 (en) * 2003-08-08 2005-02-10 Tiara Medical Systems, Inc. Sealing nasal cannula
US20050039757A1 (en) * 1999-03-13 2005-02-24 Wood Thomas J. Ventilation interface for sleep apnea therapy
US6860270B2 (en) * 2001-08-02 2005-03-01 Joseph A. Sniadach Double barrel ventilation mask for a patient
US20050051171A1 (en) * 2003-09-10 2005-03-10 Booth Jamie Lee Nose breathing mask for a medical patient; and method
US20050051176A1 (en) * 2001-06-18 2005-03-10 Riggins Michael Allen Nasal and oral cannula apnea detection device
US20050056286A1 (en) * 2003-09-17 2005-03-17 Huddart Brett John Breathable respiratory mask
US20050061326A1 (en) * 2002-08-09 2005-03-24 Payne Charles E. Headwear for use by a sleep apnea patient
US7011090B2 (en) * 2001-09-07 2006-03-14 Resmed Limited Elbow for mask assembly
US20060060200A1 (en) * 2004-09-21 2006-03-23 Ric Investments, Llc Cheek-mounted patient interface
US7018362B2 (en) * 2000-08-03 2006-03-28 Venetec International, Inc. Dialysis catheter anchoring system
WO2007009182A1 (en) * 2005-07-19 2007-01-25 Map Medizin-Technologie Gmbh Respiratory mask and method for manufacturing a respiratory mask
US20070023044A1 (en) * 2005-07-29 2007-02-01 Resmed Limited Life style flow generator and mask system
US7178525B2 (en) * 2004-02-06 2007-02-20 Ric Investments, Llc Patient interface assembly supported under the mandible
US7191781B2 (en) * 2003-08-05 2007-03-20 Innomed Technologies, Inc. Nasal ventilation interface and system
US20080004573A1 (en) * 2006-05-19 2008-01-03 Heiner Kaufmann Adapter for Affixing a Medical Appliance
US20080006277A1 (en) * 2004-06-03 2008-01-10 Resmed Limited Cushion for a Patient Interface
US7318437B2 (en) * 2003-02-21 2008-01-15 Resmed Limited Nasal assembly
US20080047560A1 (en) * 2006-07-28 2008-02-28 Resmed Limited Delivery of respiratory therapy
US20080060649A1 (en) * 2006-07-28 2008-03-13 Resmed Limited Delivery of respiratory therapy
US7658189B2 (en) * 2003-12-31 2010-02-09 Resmed Limited Compact oronasal patient interface
US20110146684A1 (en) * 2008-09-12 2011-06-23 Resmed Limited Foam-based interfacing structure method and apparatus

Family Cites Families (307)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185017C (en)
US443191A (en) 1890-12-23 Karl illing
US781516A (en) 1904-02-03 1905-01-31 George N Guthrie Jr Respirator and inhaler.
US1192186A (en) 1910-09-20 1916-07-25 Samuel Ward Greene Respirator.
US1081745A (en) 1912-05-03 1913-12-16 White S Dental Mfg Co Nasal inhaler.
US1229050A (en) 1917-03-29 1917-06-05 Robert Donald Respirator.
US1282527A (en) 1918-04-13 1918-10-22 Gratien Bidonde Life-preserver.
US1362766A (en) 1919-11-07 1920-12-21 Mcgargill James Martin Gas-mask
US1610793A (en) 1926-04-30 1926-12-14 Kaufman Leo Respirator
US1873160A (en) 1929-02-08 1932-08-23 Harold V Sturtevant Breathing apparatus
GB532214A (en) 1939-08-22 1941-01-20 Hayden Thomas Cattanach Improvements in and relating to nasal douches
US2353643A (en) 1942-07-29 1944-07-18 Arthur H Bulbulian Head harness for masks
US2433565A (en) 1946-06-21 1947-12-30 Korman Alexander Nose filter
US3013556A (en) 1959-08-07 1961-12-19 Jr Ellis A Galleher Head strap for respiratory masks
US3670726A (en) 1969-09-23 1972-06-20 Becton Dickinson Co Breathing circuit
US3739774A (en) 1970-05-21 1973-06-19 Ml Aviation Co Ltd Respirators
US3682171A (en) 1971-03-31 1972-08-08 Baxter Laboratories Inc Nasal cannula
US3754552A (en) 1971-06-08 1973-08-28 Sandoz Ag Flexible nasal cannula
DE2342521A1 (en) 1972-08-29 1974-04-25 Paul Guichard PORTABLE NASAL DIFFUSER DEVICE FOR PURIFYING AND MODIFYING BREATHING AIR
US3905361A (en) 1974-04-24 1975-09-16 Brunswick Mfg Co Inc Apparatus for sealing the esophagus and providing artificial respiration and evacuating the stomach
US3972321A (en) 1975-02-20 1976-08-03 Proctor John S Upper lip mounted retaining means for medical-surgical tubes
US4153051A (en) 1977-07-08 1979-05-08 Shippert Ronald D Compound splint and kit
US4156426A (en) 1977-08-11 1979-05-29 Gold Lawrence W Head-mounted oxygen-administration device
US4267845A (en) 1978-10-05 1981-05-19 Robertson Jr Charles H Method and apparatus for measuring pulmonary ventilation
GB2045092B (en) 1979-04-03 1983-05-25 Warne Surgical Products Ltd Face masks
US4273124A (en) 1979-06-01 1981-06-16 Zimmerman J Earl Nasal cannula
DD146688A1 (en) 1979-10-19 1981-02-25 Gerhard Gruner DEVICE FOR INFLUENCING THE BREATHING SYSTEM IN NEWBORNS
US4414973A (en) 1981-03-10 1983-11-15 U.S.D. Corp. Respirator face mask
WO1982003548A1 (en) 1981-04-24 1982-10-28 Sullivan Colin Edward Device for treating snoring sickness
US4422456A (en) 1981-09-08 1983-12-27 City Of Hope National Medical Center Nasal cannula structure
US4449526A (en) 1981-11-27 1984-05-22 Elam James O Mask breathing system
US4406283A (en) 1982-02-04 1983-09-27 Phillip Bir Oxygen cannulae for continuous administration of oxygen, and its associated mounting structure and method for mounting same onto the head of a patient
US4455675A (en) 1982-04-28 1984-06-19 Bose Corporation Headphoning
US4548200A (en) 1983-04-18 1985-10-22 Baka Manufacturing Company, Inc. Endotracheal tube holder
US4549542A (en) 1983-07-25 1985-10-29 Chien Chao Huei Multiple-effect respirator
US4790829A (en) 1983-08-24 1988-12-13 Russell Bowden Reusable injection catheter
US4774946A (en) 1983-11-28 1988-10-04 Ackrad Laboratories, Inc. Nasal and endotracheal tube apparatus
US4676241A (en) 1984-01-16 1987-06-30 W.L.G. Technology Ventilation tube swivel
US4601465A (en) 1984-03-22 1986-07-22 Roy Jean Yves Device for stimulating the human respiratory system
US4630604A (en) 1985-04-09 1986-12-23 Siebe North, Inc. Valve assembly for a replaceable filter respirator
US4838878A (en) 1985-05-03 1989-06-13 Glenda G. Kalt Universal clamp
GB2176404B (en) 1985-06-13 1988-07-27 Od G Univ Im I I Mechnikova Respirator
US4587967A (en) 1985-07-09 1986-05-13 Lifecare Services, Inc. Oxygen enriched reciprocating piston respirator
US4617637A (en) 1985-07-09 1986-10-14 Lifecare Services, Inc. Servo control system for a reciprocating piston respirator
GB8523795D0 (en) 1985-09-26 1985-10-30 Protector Safety Ltd Respirator
US4699139A (en) 1985-09-30 1987-10-13 Marshall Marie F Nasal cannula assembly with patient comfort pad
US4711636A (en) 1985-11-08 1987-12-08 Bierman Steven F Catheterization system
US4671271A (en) 1985-11-27 1987-06-09 Dolores Bishop Protective facial mask
US4706664A (en) 1986-04-11 1987-11-17 Puritan-Bennett Corporation Inspiration oxygen saver
US4713844A (en) 1986-07-16 1987-12-22 Gentex Corporation Protective helmet with face mask sealing means
SE8604244L (en) 1986-10-06 1988-04-11 Finnveden Holding Ab HEAT PROTECTION PRESSURE RING
US4753233A (en) 1987-02-10 1988-06-28 Advantage Medical Nasal cannula
US4967742A (en) 1987-03-10 1990-11-06 Theodorou Ignatius E Portable breathing device
US4960121A (en) 1987-03-18 1990-10-02 Figgie International, Inc. Half-face mask assembly
US4945907A (en) 1987-04-13 1990-08-07 New England Thermoplastics, Inc. Face mask
EP0288937A3 (en) 1987-04-30 1989-09-20 Cavan Corporation Disposable breathing mask
DE3719009A1 (en) 1987-06-06 1988-12-22 Ernst Dipl Ing Hoermann Ventilation mask with adjustable mouthpiece and nose moulding
US5199424A (en) 1987-06-26 1993-04-06 Sullivan Colin E Device for monitoring breathing during sleep and control of CPAP treatment that is patient controlled
US4971051A (en) 1987-07-13 1990-11-20 Toffolon Norman R Pneumatic cushion and seal
US4767411A (en) 1987-07-14 1988-08-30 Edmunds L Henry Protective catheter sleeve
US4782832A (en) 1987-07-30 1988-11-08 Puritan-Bennett Corporation Nasal puff with adjustable sealing means
CH671702A5 (en) 1987-08-04 1989-09-29 Morgan Tech Ltd
US4976698A (en) 1987-10-23 1990-12-11 Stokley Manuel H Intravenous catheter and tubing stabilization device
WO1989009043A1 (en) 1988-03-23 1989-10-05 Christa Ursula Palfy Nasal tube holder
US5335656A (en) 1988-04-15 1994-08-09 Salter Laboratories Method and apparatus for inhalation of treating gas and sampling of exhaled gas for quantitative analysis
US5462528A (en) 1988-07-01 1995-10-31 Roewer; Norbert Stomach tube
DE3823382C1 (en) 1988-07-09 1990-01-11 Draegerwerk Ag, 2400 Luebeck, De
IL87156A (en) 1988-07-20 1993-05-13 Eagle Forced-ventilation filtration unit particularly for respiration device
US4966590A (en) 1988-12-13 1990-10-30 Kalt Medical Corporation IV Clamp with membrane dressing
US5042478A (en) 1988-08-26 1991-08-27 University Technologies International, Inc. Method of ventilation using nares seal
US6406468B1 (en) 1988-12-20 2002-06-18 Kimberly-Clark Worldwide, Inc. Mechanical fastening tapes and method for their construction
US5261893A (en) 1989-04-03 1993-11-16 Zamierowski David S Fastening system and method
US4969880A (en) 1989-04-03 1990-11-13 Zamierowski David S Wound dressing and treatment method
US5023955A (en) 1989-04-13 1991-06-18 Gentex Corporation Impact-absorbing sound-attenuating earcup
WO1990011791A1 (en) 1989-04-13 1990-10-18 Salter Laboratories Demand oxygen system
US5265595A (en) 1989-06-19 1993-11-30 Hans Rudolph, Inc. Mask for breath analysis
US5020163A (en) 1989-06-29 1991-06-04 Gentex Corporation Earseal for sound-attenuating earcup assembly
DE3927038A1 (en) 1989-08-16 1991-02-21 Juergen Hoefer Oxygen mask measuring blood oxygen level - has sensor on lever arm for placing on forehead of wearer
DK162426C (en) 1989-09-04 1992-03-23 Ambu Int As PROTECTION AGENT FOR USE BY LUNGE VENTILATION BY ORAL ORAL OR Mouth-to-nose method
CA2019533A1 (en) 1989-11-09 1991-05-09 William H. Hollister Face mask and face mask components
US5074297A (en) 1989-12-19 1991-12-24 The General Hospital Corporation Self-sealing mask for delivering intermittent positive pressure ventilation
US5046491A (en) 1990-03-27 1991-09-10 Derrick Steven J Apparatus and method for respired gas collection and analysis
US5243971A (en) 1990-05-21 1993-09-14 The University Of Sydney Nasal mask for CPAP having ballooning/moulding seal with wearer's nose and facial contours
ES2086547T3 (en) 1990-06-26 1996-07-01 Cam Lock Uk Ltd PERFECTED RESPIRATORY EQUIPMENT FOR AIRCRAFT CREW.
US5207665A (en) 1990-07-06 1993-05-04 Mcneil-Ppc, Inc. Absorbent product having mechanical attachment mechanism
US5025805A (en) 1990-07-11 1991-06-25 Betty Nutter Nasal cannula assembly
US5121745A (en) 1990-07-23 1992-06-16 Israel Michael B Self-inflatable rescue mask
US5113857A (en) 1990-08-27 1992-05-19 Stair Dickerman Breathing gas delivery system and holding clip member therefor
FR2673380B1 (en) 1991-02-28 1993-06-18 Intertechnique Sa PERSONAL RESPIRATORY PROTECTION EQUIPMENT.
CA2068925A1 (en) 1991-05-21 1992-11-22 Amad Tayebi Breathing mask
FR2676650B1 (en) 1991-05-22 1993-08-13 Lemitouard Anne FACIAL RESPIRATORY MASK.
WO1992020392A1 (en) 1991-05-24 1992-11-26 Calor Air Separation Limited Nasal cannula
US5138722A (en) 1991-07-02 1992-08-18 David Clark Company Inc. Headset ear seal
US5243709A (en) 1991-09-04 1993-09-14 Natus Medical, Inc. Acoustically sealing earmuff for an infant
US6086118A (en) 1991-09-10 2000-07-11 Bundy Corporation Quick connect tubing connector
FR2682043A1 (en) 1991-10-03 1993-04-09 Intertechnique Sa RESPIRATORY EQUIPMENT WITH ORO-NASAL MASK.
US5954049A (en) 1991-10-15 1999-09-21 Trudell Medical Limited Equine mask with MDI adapter
US5477852A (en) 1991-10-29 1995-12-26 Airways Ltd., Inc. Nasal positive airway pressure apparatus and method
US5269296A (en) 1991-10-29 1993-12-14 Landis Robert M Nasal continuous positive airway pressure apparatus and method
EP1149603A3 (en) 1991-12-20 2003-10-22 Resmed Limited Ventilator for continuous positive airway pressure breathing (CPAP)
US5271391A (en) 1991-12-20 1993-12-21 Linda Graves Apparatus for delivering a continuous positive airway pressure to an infant
US5372130A (en) 1992-02-26 1994-12-13 Djs&T Limited Partnership Face mask assembly and method having a fan and replaceable filter
US5355893A (en) 1992-04-06 1994-10-18 Mick Peter R Vital signs monitor
GB2267648A (en) 1992-06-12 1993-12-15 Mel A face mask incorporating breathing equipment for aircrew
US5220699A (en) 1992-07-27 1993-06-22 Farris R David Surgical face mask support apparatus and method
US5267557A (en) 1992-08-17 1993-12-07 Her Mou Lin Nose mask with a filtering device
US5263939A (en) 1992-10-09 1993-11-23 Surgin Surgical Instrumentation, Inc. Retainer for laparoscopic cannula
US5372391A (en) 1993-02-22 1994-12-13 The United States Of America As Represented By The United States Department Of Energy Internal pipe attachment mechanism
US5372390A (en) 1993-02-24 1994-12-13 Senior Engineering Investments, B.V. Coupling system for relatively thick-walled tubes
US5364367A (en) 1993-04-30 1994-11-15 Minnesota Mining And Manufacturing Company Cannula anchor
US5372388A (en) 1993-04-30 1994-12-13 American Pipe & Plastics, Inc. Integral multi-duct conduit section
US5560354A (en) 1993-06-18 1996-10-01 Rescare Limited Facial masks for assisted respiration or CPAP
US5372389A (en) 1993-06-22 1994-12-13 Graco Inc. Nozzle swivel joint
US5437267A (en) 1993-08-03 1995-08-01 Weinstein; Allan Device for delivering aerosol to the nasal membranes and method of use
US5441046A (en) 1993-09-29 1995-08-15 Respironics, Inc. Quick release mechanism for nasal and/or oral gas delivery mask
US5375593A (en) 1994-02-10 1994-12-27 Press; John R. Oxygenating pacifier
US5513634A (en) 1994-05-06 1996-05-07 Chek-Med Systems, Inc. Combination integral bite block airway and nasal cannula
FR2720280B1 (en) 1994-05-27 1996-08-09 Mitouard Anne Le Respiratory mask.
US5655527A (en) 1994-06-03 1997-08-12 Respironics Inc. Respiratory mask with floating seal responsive to pressurized gas
US5975079A (en) 1994-07-25 1999-11-02 Hellings; Deborah Anesthesia and respiratory face mask
US5906203A (en) 1994-08-01 1999-05-25 Safety Equipment Sweden Ab Breathing apparatus
US5425359A (en) 1994-08-29 1995-06-20 Liou; Nan-Tien Nose plug structure with filter
US5653228A (en) 1994-10-25 1997-08-05 Byrd; Timothy N. Medical tube holding device and associated securing strap
US5533506A (en) 1995-01-13 1996-07-09 Medlife, Inc. Nasal tube assembly
WO1996022752A1 (en) 1995-01-23 1996-08-01 Schwartz Alan N Goggles with pliable and resilient sealing pad
US6152137A (en) 1995-01-23 2000-11-28 Schwartz; Alan N. Pliable and resilient sealing pad
US5513635A (en) 1995-02-02 1996-05-07 Bedi; Shan Nasal cannula anchoring apparatus
US5538000A (en) 1995-02-06 1996-07-23 Hans Rudolph, Inc. Airflow delivery system
FR2731624B1 (en) 1995-03-16 1997-09-26 Assist Publ Hopitaux De Paris FACE VENTILATION MASK, PART AND METHOD FOR THE PRODUCTION THEREOF
US5526806A (en) 1995-04-04 1996-06-18 Sansoni; Jean Non-invasive nasal cannula
US6082360A (en) 1995-05-04 2000-07-04 Hans Rudolph, Inc. Mask with gel seal
DE19529322C1 (en) 1995-08-09 1997-03-13 Gottfried Dr Med Feuchtgruber Packed respiratory mask
US5647357A (en) 1995-09-08 1997-07-15 Respironics, Inc. Respiratory mask facial seal
US6397847B1 (en) 1995-09-08 2002-06-04 Respironics, Inc. Customizable seal, mask with customizable seal and method of using such a seal
US6241930B1 (en) 1995-11-30 2001-06-05 Ubertech Texas, Inc. Method of constructing a garment with a graphical design thereon
EP0776679B1 (en) 1995-12-01 2002-04-10 Ikari Corporation Mask maintaining warmth in nasal area
US5570684A (en) 1995-12-29 1996-11-05 Behr; R. Douglas Heating and humidifying respiratory mask
AUPO247496A0 (en) 1996-09-23 1996-10-17 Resmed Limited Assisted ventilation to match patient respiratory need
US5682881A (en) 1996-10-21 1997-11-04 Winthrop; Neil Nasal CPAP/Cannula and securement apparatus
US6139787A (en) 1996-10-24 2000-10-31 Ubertech Texas, Inc. Method for applying molded silicone design elements onto substrates
US5752511A (en) 1996-11-22 1998-05-19 Simmons; Carl J. Universal medical tube retainer and nasal wall tissue dilator
EP0946211B1 (en) 1996-11-25 2003-01-22 Kimberly-Clark Worldwide, Inc. Adhesive composition comprising a lower-alkenyl substituted polysiloxane
US5807341A (en) 1996-12-11 1998-09-15 Team Medical Llc Medical catheter dressing device
AUPO425696A0 (en) 1996-12-18 1997-01-23 Resmed Limited A device for preventing or reducing the passage of air through the mouth
US6211263B1 (en) 1996-12-23 2001-04-03 The Procter & Gamble Company Adhesive for secure topical attachment to the skin and comfortable removal
US5921239A (en) 1997-01-07 1999-07-13 Sunrise Medical Hhg Inc. Face mask for patient breathing
US6412487B1 (en) 1997-01-31 2002-07-02 Resmed Limited Mask cushion and frame assembly
DE19703526A1 (en) 1997-01-31 1998-08-06 Rainer Berger Appliance for delivery of a substance into inhaled air
AUPP855099A0 (en) 1999-02-09 1999-03-04 Resmed Limited Gas delivery connection assembly
AUPO504597A0 (en) 1997-02-10 1997-03-06 Resmed Limited A mask and a vent assembly therefor
US5794619A (en) 1997-02-18 1998-08-18 Edelman; Robert Nasal cannula mounted solely by frictional engagement with the columella
DE29723101U1 (en) 1997-04-05 1998-05-28 Weinmann G Geraete Med Device for coupling to ventilation masks
US6439234B1 (en) 1998-04-03 2002-08-27 Salter Labs Nasal cannula
GB2325668B (en) 1997-05-30 1999-12-01 Bristol Myers Squibb Co Adhesive composition or structure
US5842469A (en) 1997-07-03 1998-12-01 Rapp; John D. Method for extending the useful life of a nasal dilator
US6119694A (en) 1997-07-24 2000-09-19 Respironics Georgia, Inc. Nasal mask and headgear
US6432098B1 (en) 1997-09-04 2002-08-13 The Procter & Gamble Company Absorbent article fastening device
US5991979A (en) 1997-09-29 1999-11-30 Alpine Partners Skin mounted device holder
AU1171299A (en) 1997-11-14 1999-06-07 Louis Michael Crowe A seal for a respiratory mask, and a respiratory mask
US6119693A (en) 1998-01-16 2000-09-19 Resmed Limited Forehead support for facial mask
DE19807961C2 (en) 1998-02-25 1999-12-02 Map Gmbh Respiratory mask
GB9805619D0 (en) 1998-03-18 1998-05-13 Noise Cancellation Tech Cushioned earphones
US5918598A (en) 1998-04-10 1999-07-06 Belfer; William A. Strapless respiratory facial mask for customizing to the wearer's face
FR2778575B1 (en) 1998-05-12 2000-07-28 Intertechnique Sa RESPIRATORY PROTECTION EQUIPMENT WITH FAST SETUP
AUPP366398A0 (en) 1998-05-22 1998-06-18 Resmed Limited Ventilatory assistance for treatment of cardiac failure and cheyne-stokes breathing
US6419660B1 (en) 1998-05-29 2002-07-16 Ronald D. Russo Medical tube holder
US6328038B1 (en) 1998-07-14 2001-12-11 Fred Bruce Kessler Nasal cannula retainer
US20020157673A1 (en) 1998-07-14 2002-10-31 Kessler Fred B. Nasal cannula retainer
AU5180999A (en) 1998-07-31 2000-02-21 First Water Limited Bioadhesive compositions comprising hydrophobic polymers
US6820617B2 (en) 1998-08-13 2004-11-23 Fisher & Paykel Limited Breathing assistance apparatus
US6637434B2 (en) 1998-10-30 2003-10-28 Linda J. Noble Nasal gas delivery system and method for use thereof
US6561193B1 (en) 1998-10-30 2003-05-13 Linda J. Noble Nasal gas delivery apparatus and a nasal vestibular airway
AUPP794598A0 (en) 1998-12-24 1999-01-28 Resmed Limited An anti-asphyxia valve
AUPP812199A0 (en) 1999-01-12 1999-02-04 Resmed Limited Headgear
US6607516B2 (en) 1999-02-02 2003-08-19 The Procter & Gamble Company Disposable human waste management devices with improved adhesive flange to facilitate adhesion in oily conditions
WO2000050121A1 (en) 1999-02-25 2000-08-31 Respironics, Inc. Adhesive nasal mask assembly, system and method of using same
US6258066B1 (en) 1999-03-08 2001-07-10 Rex W. Urich Intravenous catheter stabilizing device
US6834650B1 (en) 1999-03-12 2004-12-28 Mallinckrodt, Inc. Face or nose mask for non-invasive ventilation of patients in general
US6595215B2 (en) 2000-03-13 2003-07-22 Innomed Technologies, Inc. Ventilation interface for sleep apnea therapy
US6478026B1 (en) 1999-03-13 2002-11-12 Thomas J. Wood Nasal ventilation interface
US6374826B1 (en) 1999-03-18 2002-04-23 Resmed Limited Mask and headgear connector
US6295366B1 (en) 1999-03-24 2001-09-25 Flightcom Corporation Aircraft headset
US6412488B1 (en) 1999-05-12 2002-07-02 Respironics, Inc. Low contact nasal mask and system using same
US6482178B1 (en) 1999-05-21 2002-11-19 Cook Urological Incorporated Localization device with anchoring barbs
EP1198266A1 (en) 1999-05-28 2002-04-24 Euromedico Ltd. Gas-supplying device
US6423036B1 (en) 1999-06-07 2002-07-23 Gibbons Surgical Corporation Cannula anchoring port
US7219669B1 (en) 1999-06-08 2007-05-22 Sleepnet Corporation Nose mask
US6631718B1 (en) 1999-06-08 2003-10-14 Sleepnet Corporation Air mask with seal
US6357440B1 (en) 1999-06-16 2002-03-19 Mallinckrodt Inc. Pliable respiratory mask
US6644315B2 (en) 1999-06-18 2003-11-11 Saeed Ziaee Nasal mask
US6581601B2 (en) 1999-06-18 2003-06-24 Saeed Ziaee Nasal mask with balloon exhalation valve
US6467483B1 (en) 1999-07-28 2002-10-22 Respironics, Inc. Respiratory mask
CA2281457A1 (en) 1999-08-26 2001-02-26 Alfred Ernest Bassett Securing device for intraveneous cannula or catheter
DE19944242A1 (en) 1999-09-15 2001-03-22 Dentallabor Negurescu Gmbh Medical breathing mask with nose and mouth pieces joins these via orifice and flexible connector tube to breathing apparatus.
US6434796B1 (en) 1999-10-20 2002-08-20 Kathryn M. Speirs Oxygen delivery cannula retainer, cannula with retainers assembly, and method for retaining cannulas
DE19954517C2 (en) 1999-11-12 2002-01-31 Map Gmbh Breathing mask and method of making the same
EP1118346A3 (en) 2000-01-21 2003-06-18 MPV-Truma Gesellschaft Für Medizintechnische Produkte mbH Nasal breathing mask and mask cushion for a nasal breathing mask
DE10002571A1 (en) 2000-01-21 2001-07-26 Mpv Truma Ges Fuer Medizintech Breathing mask is of a flexible material with a spaced sealing lip at the inner support wall to give a comfortable and sealed fit at the face when in place around the nose
FR2804330B1 (en) 2000-02-01 2003-01-10 Georges Boussignac RESPIRATORY ASSISTANCE APPARATUS
WO2001062326A1 (en) 2000-02-25 2001-08-30 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Sealing lip device for a respiratory mask, respiratory mask and a method and a mould for producing the same
WO2001066174A1 (en) 2000-03-03 2001-09-13 The Penn State Research Foundation Nasal oral respiratory interface
US6572588B1 (en) 2000-03-10 2003-06-03 Venetec International, Inc. Medical anchoring system
US6571798B1 (en) 2000-04-05 2003-06-03 W. Keith Thornton Device for improving breathing and method of constructing same
WO2006069415A1 (en) 2004-12-30 2006-07-06 Resmed Limited Respiratory mask having gas washout vent and gas washout vent assembly for respiratory mask
US6581594B1 (en) 2000-05-15 2003-06-24 Resmed Limited Respiratory mask having gas washout vent and gas washout vent for respiratory mask
FR2809317B1 (en) 2000-05-26 2002-08-16 Taema NASAL RESPIRATORY MASK WITH ADJUSTABLE THERMISTANCE INTENDED FOR THE TREATMENT OF RESPIRATORY SLEEP DISORDERS
US6701926B2 (en) 2000-06-14 2004-03-09 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
AUPQ821500A0 (en) 2000-06-19 2000-07-13 Australian Centre For Advanced Medical Technology Ltd Mask
US6669712B1 (en) 2000-06-30 2003-12-30 Norman Cardoso Nasal oxygen cannula with supply tube management
GB0019831D0 (en) 2000-08-12 2000-09-27 Smiths Industries Plc Medico-Surgical apparatus
US6561188B1 (en) 2000-08-21 2003-05-13 Ellis Alan D Nasal breathing apparatus and methods
US6584975B1 (en) 2000-08-28 2003-07-01 Eldridge Taylor Respirator mask for filtering breathed air
US20020069872A1 (en) 2000-09-22 2002-06-13 Gradon Lewis George Mouthpiece
US6431172B1 (en) 2000-10-20 2002-08-13 Mallinckrodt Inc. Nasal cannula with inflatable plenum chamber
KR200221064Y1 (en) 2000-11-10 2001-04-16 이근우 Mask for prevention steaming up
US6595214B1 (en) 2000-11-22 2003-07-22 Mpv-Truma Gesellschaft Fur Nasal respiration mask
AUPR193300A0 (en) 2000-12-07 2001-01-04 Resmed Limited Mask assembly
US7152601B2 (en) 2000-12-18 2006-12-26 Mohamed Ali Barakat Strapless respiratory face mask
US6448303B1 (en) 2000-12-29 2002-09-10 National Starch And Chemical Investment Holding Corporation Hot melt adhesives for dermal application
US6579267B2 (en) 2001-01-05 2003-06-17 Applied Diabetes Research, Inc. Pivoting joint infusion assembly
DE10105383C2 (en) 2001-02-06 2003-06-05 Heptec Gmbh Anti-snoring device
US20020143296A1 (en) 2001-03-29 2002-10-03 Russo Ronald D. Medical tube holder
GB0114368D0 (en) 2001-06-07 2001-08-08 Smiths Industries Plc Face masks
US6766817B2 (en) 2001-07-25 2004-07-27 Tubarc Technologies, Llc Fluid conduction utilizing a reversible unsaturated siphon with tubarc porosity action
US6817362B2 (en) 2001-08-10 2004-11-16 North Safety Products Inc. Respirator
US7753050B2 (en) 2001-09-07 2010-07-13 Resmed Limited Headgear connection assembly for a respiratory mask assembly
US6823869B2 (en) 2001-09-07 2004-11-30 Resmed Limited Mask assembly
EP1302212A3 (en) 2001-10-10 2004-01-21 Fisher & Paykel Healthcare Limited Forehead support for a facial mask
DE10201682A1 (en) 2002-01-17 2003-07-31 Map Medizin Technologie Gmbh The breathing mask arrangement
US6805117B1 (en) 2001-11-07 2004-10-19 Ric Investments, Llc Universal fitting headgear
US7052127B2 (en) 2002-01-23 2006-05-30 Warnaco Swimwear Products Inc. One-piece integrally-formed goggle
GB0204161D0 (en) 2002-02-22 2002-04-10 Smiths Group Plc Mask apparatus
EP1342484B1 (en) 2002-03-06 2007-06-13 The BOC Group plc Improvements in nasal cannulae
US7743767B2 (en) 2002-04-23 2010-06-29 Resmed Limited Ergonomic and adjustable respiratory mask assembly with frame
US8042542B2 (en) 2002-04-23 2011-10-25 Resmed Limited Respiratory mask assembly with magnetic coupling to headgear assembly
AUPS192602A0 (en) 2002-04-23 2002-05-30 Resmed Limited Nasal mask
US8997742B2 (en) 2002-04-23 2015-04-07 Resmed Limited Ergonomic and adjustable respiratory mask assembly with cushion
NO316496B1 (en) 2002-06-10 2004-02-02 Laerdal Medical As Cover for patient mask
EP2308537A1 (en) 2002-06-14 2011-04-13 MAP Medizin-Technologie GmbH Mask cushioning for a respiratory mask
US6789543B2 (en) 2002-07-02 2004-09-14 James L. Cannon Assisted breathing device and method of wearing same
US7146976B2 (en) 2002-08-06 2006-12-12 Mckown Joseph R Nasal cannula retainer
US7814911B2 (en) 2004-10-15 2010-10-19 Aeiomed, Inc. Nares seal
EP1534143B1 (en) 2002-08-23 2007-05-30 Organ Recovery Systems Connectors, particularly for transplant organs
US6766800B2 (en) 2002-08-30 2004-07-27 Sensormedics Corporation Pressure regulating valve for use in continuous positive airway pressure devices
WO2004020024A1 (en) 2002-08-30 2004-03-11 Inrad, Inc. Localizing needle with fluid delivery
EP1545674B1 (en) 2002-09-06 2015-04-08 ResMed Limited Cushion for a respiratory mask assembly
AU2003275762A1 (en) 2002-11-06 2004-06-07 Resmed Limited Mask and components thereof
US7285255B2 (en) 2002-12-10 2007-10-23 Ecolab Inc. Deodorizing and sanitizing employing a wicking device
US20040127856A1 (en) 2002-12-27 2004-07-01 Carolyn Johnson Catheter and delivery end
US20040211428A1 (en) 2003-02-28 2004-10-28 Sunrise Medical Hhg Inc. Nasal mask cushion
US7219670B2 (en) 2003-02-28 2007-05-22 Sunrise Medical Hhg Inc. Method for securing a nasal mask
SE0301405L (en) 2003-05-14 2004-11-15 Atos Medical Ab Device for holding a tracheal cannula
US7493902B2 (en) 2003-05-30 2009-02-24 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US7207328B1 (en) 2003-07-29 2007-04-24 Armin Altemus Emergency air delivery system for patients
DE10338169A1 (en) 2003-08-20 2005-03-10 Weinmann G Geraete Med Ventilation mask with hood
USD552733S1 (en) 2003-10-06 2007-10-09 Tyco Healthcare Group Lp Balloon anchored cannula
US7699808B2 (en) 2003-11-10 2010-04-20 Smiths Medical Asd, Inc. Subcutaneous infusion device and method
DE10352607A1 (en) * 2003-11-11 2005-06-02 Map Medizin-Technologie Gmbh Headband device for an oxygen mask has a flexible band part with upper and lower band sections for transmitting mask-retaining forces required for applying an oxygen mask
ATE546182T1 (en) * 2003-12-08 2012-03-15 Fisher & Paykel Healthcare Ltd DEVICE TO SUPPORT BREATHING
DE102004001534A1 (en) 2004-01-10 2005-08-04 DRäGER AEROSPACE GMBH Passenger Oxygen Mask
US7856982B2 (en) 2004-03-11 2010-12-28 Ric Investments, Llc Patient interface device
NZ550348A (en) 2004-04-09 2011-02-25 Resmed Ltd Nasal assembly with vent and baffle
WO2005099801A1 (en) 2004-04-15 2005-10-27 Resmed Limited Positive-air-pressure machine conduit
JP2007538356A (en) 2004-05-17 2007-12-27 レスメド リミテッド Posture sensing lighting system
US7243723B2 (en) 2004-06-18 2007-07-17 Halliburton Energy Services, Inc. System and method for fracturing and gravel packing a borehole
DE102004030068B3 (en) 2004-06-23 2005-06-23 Drägerwerk AG Respiration mask for continuous positive airway pressure respiration device with respiration gases supplied via bandage attaching mask to head of patient
US8967146B2 (en) 2004-07-23 2015-03-03 Resmed Limited Respiratory mask having gas washout vent and method for making the mask
US7470256B2 (en) 2004-10-29 2008-12-30 Merit Medical Systems, Inc., Self-suturing anchor device for a catheter
US7520869B2 (en) 2004-10-29 2009-04-21 Merit Medical Systems, Inc. Self-suturing anchor device for a catheter
DE102004055433B3 (en) 2004-11-17 2005-11-17 Drägerwerk AG Breathing mask with integrated suction area
US8042539B2 (en) 2004-12-10 2011-10-25 Respcare, Inc. Hybrid ventilation mask with nasal interface and method for configuring such a mask
US8261745B2 (en) 2004-12-10 2012-09-11 Respcare, Inc. Ventilation interface
US7237551B2 (en) 2004-12-22 2007-07-03 Ric Investments, Llc. Cushion for a patient interface
CN101155610B (en) 2005-01-12 2012-01-04 雷斯梅德有限公司 Cushion for patient interface
WO2006101797A2 (en) 2005-03-15 2006-09-28 Medical Device Group, Inc. Adjustable bite block for respirator
WO2006099658A1 (en) 2005-03-22 2006-09-28 Resmed Limited Nasal dilator
US7152599B2 (en) 2005-05-20 2006-12-26 Thomas Wendell A Nasal mask for delivering gas
CN104645476B (en) 2005-06-06 2017-08-22 瑞思迈有限公司 Mask system
USD550836S1 (en) 2005-07-06 2007-09-11 Respcare, Inc. Ventilation interface
AU2005100738B4 (en) 2005-09-08 2005-12-15 Respironics, Inc. Patient interface device
NZ591992A (en) 2005-10-14 2012-11-30 Resmed Ltd Breathing mask with cushion attached to frame via lip of cushion engaging within recess between frame outer and inner walls, and guided in via angled protrusion of frame inner wall
US8701668B2 (en) 2005-10-14 2014-04-22 Resmed Limited Nasal assembly
US20090126739A1 (en) 2005-10-25 2009-05-21 Resmed Limited Interchangeable Mask Assembly
WO2007053878A1 (en) 2005-11-08 2007-05-18 Resmed Ltd Nasal assembly
US7640934B2 (en) 2005-12-02 2010-01-05 Carefusion 2200, Inc. Infant nasal interface prong device
US8701667B1 (en) 2006-05-05 2014-04-22 Ric Investments, Llc Patient interface device with limited support area on the face
US8887725B2 (en) 2006-05-10 2014-11-18 Respcare, Inc. Ventilation interface
US20070282272A1 (en) 2006-05-30 2007-12-06 Bannon Chad D Device for guiding medical tubing
WO2008040050A1 (en) 2006-10-02 2008-04-10 Resmed Ltd Cushion for mask system
AT503882A2 (en) 2006-06-16 2008-01-15 Stadler Johann FIXATION OF A VEIN CONVERTING CANNING
AU2007259483B2 (en) 2006-06-16 2012-11-29 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US8500698B2 (en) 2006-09-08 2013-08-06 Zefon International, Inc. Catheter anchor
US20080110469A1 (en) 2006-11-13 2008-05-15 Stanley Weinberg Strapless flexible tribo-charged respiratory facial mask and method
DE202007019572U1 (en) * 2006-12-06 2013-12-02 Weinmann Geräte für Medizin GmbH + Co. KG Respiratory mask with a filling body
JP5911189B2 (en) 2006-12-15 2016-04-27 レスメド・リミテッドResMed Limited Respiratory therapy
US20080200880A1 (en) 2007-02-15 2008-08-21 Kurt Kyvik Catheter anchor
NZ615209A (en) * 2007-03-02 2015-07-31 Resmed Ltd Respiratory mask
NZ589685A (en) * 2007-04-19 2012-06-29 Resmed Ltd Cushion for patient breathing interface with variable density foam supported membrane
US20080302365A1 (en) * 2007-06-08 2008-12-11 Cohen Eric D Respiratory Mask
US9782553B2 (en) 2007-07-13 2017-10-10 Resmed Limited Patient interface and non-invasive positive pressure ventilating method
EP2452716B1 (en) 2007-07-30 2017-06-21 ResMed Ltd. Patient interface
WO2009062265A1 (en) * 2007-11-15 2009-05-22 Resmed Ltd A cushioning structure
WO2009108994A1 (en) 2008-03-04 2009-09-11 Resmed Ltd A foam respiratory mask
AU2009221639B2 (en) 2008-03-04 2014-11-20 ResMed Pty Ltd An interface including a foam cushioning element
CN105126222A (en) 2008-06-04 2015-12-09 瑞思迈有限公司 Patient interface system
EP2213324B1 (en) 2009-01-30 2016-07-27 ResMed R&D Germany GmbH Patient interface structure and method/tool for manufacturing same
EP2445563A4 (en) 2009-06-24 2016-03-23 Resmed Ltd Adjustable mask system and related methods

Patent Citations (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125542A (en) * 1914-03-11 1915-01-19 Aubrey Humphries Apparatus for use in administering anesthetics.
US1445010A (en) * 1920-11-15 1923-02-13 William S Feinberg Breathing apparatus for swimmers
US2415846A (en) * 1944-10-23 1947-02-18 Randall Francis Eugene Oronasal mask
US2625155A (en) * 1950-12-11 1953-01-13 Arthur E Engelder Face mask
US2706983A (en) * 1951-09-15 1955-04-26 Willson Products Inc Flexible construction in respirator mask facepiece
US2931356A (en) * 1958-08-25 1960-04-05 Puritan Compressed Gas Corp Oxygen mask having detachable face seal cushion
US3938614A (en) * 1972-06-20 1976-02-17 Aktiebolaget Lennartsfors Mekaniska Verkstad Cushion member for sound-proof sealing
US3861385A (en) * 1972-08-25 1975-01-21 Edward Carden Anaesthetist{3 s ventilation
US3848925A (en) * 1972-11-02 1974-11-19 Coach & Car Equip Corp Transit vehicle seat
US4006744A (en) * 1974-06-24 1977-02-08 Abbott Laboratories Locking cannula mount
US4142527A (en) * 1977-02-07 1979-03-06 Garcia Nelson C Endotracheal tube holder
US4248218A (en) * 1978-09-22 1981-02-03 Fischer Charles M Gas administration scavenging mask
US4264743A (en) * 1979-04-23 1981-04-28 Nhk Spring Co., Ltd. Polyurethane foam sealing material and process for producing the same
US4263908A (en) * 1979-07-25 1981-04-28 Mizerak Vladimir S Nasal cannula mask
US4367735A (en) * 1979-12-31 1983-01-11 Novametrix Medical Systems, Inc. Nasal cannula
US4312359A (en) * 1980-02-19 1982-01-26 Life Care Systems, Inc. Noninvasive blood pressure measuring system
US4367816A (en) * 1981-06-10 1983-01-11 Wilkes Kenneth R Tear strip for gas sterilizable package and package
US4803981A (en) * 1981-09-22 1989-02-14 Vickery Ian M Anaesthesia mask
US4493614A (en) * 1982-10-08 1985-01-15 Lifecare Services, Inc. Pump for a portable ventilator
US4572323A (en) * 1983-03-28 1986-02-25 Racal Safety Limited Hearing protectors
US4660555A (en) * 1984-09-21 1987-04-28 Payton Hugh W Oxygen delivery and administration system
US4641647A (en) * 1985-02-08 1987-02-10 Sheryl L. Taylor Device for securing respiratory appliance during respiratory therapy
USD293613S (en) * 1985-11-18 1988-01-05 Anesthesia Respiratory Technology, Inc. Anesthesia and respiratory face mask
US5000173A (en) * 1987-11-19 1991-03-19 Daniel Zalkin Respiratory aid device
US4802857A (en) * 1987-11-23 1989-02-07 Laughlin Patrick E CPR mask
US4907584A (en) * 1988-03-03 1990-03-13 Mcginnis Gerald E Respiratory mask
US4811730A (en) * 1988-07-18 1989-03-14 Seitz Corporation CPR face mask and method of using same
US4919654A (en) * 1988-08-03 1990-04-24 Kalt Medical Corporation IV clamp with membrane
US4919128A (en) * 1988-08-26 1990-04-24 University Technologies International Inc. Nasal adaptor device and seal
US4915105A (en) * 1988-10-28 1990-04-10 Lee Tien Chu Miniature respiratory apparatus
US5005571A (en) * 1988-11-25 1991-04-09 Dietz Henry G Mouth nose mask for use with an inhalation therapy and/or breathing monitoring apparatus
US4899740A (en) * 1989-01-17 1990-02-13 E. D. Bullard Company Respirator system for use with a hood or face mask
US4989599A (en) * 1989-01-26 1991-02-05 Puritan-Bennett Corporation Dual lumen cannula
US4996983A (en) * 1989-01-31 1991-03-05 Amrhein Floyd E Inhaler filtration device with housing supportable by spectacle temple
US5188101A (en) * 1991-11-15 1993-02-23 Tumolo Jean S Premature baby headband for supporting nasal cannulas and oxygen feed tubes
USD333015S (en) * 1991-12-02 1993-02-02 Lifecare International, Inc. Nasal mask
US5385141A (en) * 1992-04-16 1995-01-31 Siebe North, Inc. Speech diaphragm and exhalation valve
US5592938A (en) * 1992-06-08 1997-01-14 Respironics Inc. Mask apparatus
US5396885A (en) * 1992-07-31 1995-03-14 Nelson; Joseph M. Mobile air supply cart having dual tanks and connections allowing simultaneous filling of tank and delivery of air to a user
US5299599A (en) * 1992-09-17 1994-04-05 Lifecare International, Inc. Valving arrangement for a negative pressure ventilator
US5304146A (en) * 1992-10-23 1994-04-19 Johnson Melissa C Medical appliance securing device
US5394568A (en) * 1993-01-28 1995-03-07 Minnesota Mining And Manufacturing Company Molded head harness
US5623923A (en) * 1993-06-09 1997-04-29 Intertechnique Respiratory equipment with comfort adjustment
US5400776A (en) * 1993-07-09 1995-03-28 Proprietary Technology, Inc. Apparatus for maintaining a bend in a medical insufflation tube
US5488948A (en) * 1993-09-23 1996-02-06 Intertechnique Fast donning respiratory protection equipment
US5398676A (en) * 1993-09-30 1995-03-21 Press; Roman J. Portable emergency respirator
US5704345A (en) * 1993-11-05 1998-01-06 Resmed Limited Detection of apnea and obstruction of the airway in the respiratory system
US5740799A (en) * 1993-12-21 1998-04-21 Maersk Medical A/S Device for the supply of oxygen and/or other gases to a patient
US5509409A (en) * 1994-09-12 1996-04-23 The Living Trust Of Marjorie F. Weatherholt Nasal cannula assembly
US5724965A (en) * 1995-06-06 1998-03-10 Respironics Inc. Nasal mask
US5707342A (en) * 1995-11-24 1998-01-13 Fuji Photo Optical Co., Ltd. Protector girdle for endoscopic insertion instrument
US6193914B1 (en) * 1995-11-30 2001-02-27 Ubertech Texas, Inc. Molding thermosetting polymers onto substrates
US5662101A (en) * 1995-12-07 1997-09-02 Respironics, Inc. Respiratory facial mask
US20020005198A1 (en) * 1996-07-26 2002-01-17 Philip Rodney Kwok Full-face mask and mask cushion therefor
US6701927B2 (en) * 1996-07-26 2004-03-09 Resmed Limited Full-face mask and mask cushion therefor
US6513526B2 (en) * 1996-07-26 2003-02-04 Resmed Limited Full-face mask and mask cushion therefor
US6357441B1 (en) * 1996-07-26 2002-03-19 Resmed Limited Nasal mask and mask cushion therefor
US6019101A (en) * 1996-10-31 2000-02-01 Sleepnet Corporation Nasal air mask
US6044844A (en) * 1996-12-02 2000-04-04 Resmed Limited Mask and harness assembly
US5735272A (en) * 1997-01-22 1998-04-07 Dillon; Michael M. Nasal tube holder having a nasal dilator attached thereto
US6026811A (en) * 1998-03-12 2000-02-22 Settle; Romaine A. Protective cover for nasal air supply hose
US6196223B1 (en) * 1998-04-10 2001-03-06 William A. Belfer Strapless respiratory facial mask for customizing to the wearer's face
US6679257B1 (en) * 1998-08-13 2004-01-20 Fisher & Paykel Limited Breathing assistance apparatus
US6710099B2 (en) * 1999-02-02 2004-03-23 The Procter & Gamble Company Disposable absorbent articles with improved adhesive for attachment to the skin to facilitate water adhesion stability with low pain level removal
US6536435B1 (en) * 1999-02-22 2003-03-25 Cabot Safety Intermediate Corporation Respirator headpiece and release mechanism
US6358279B1 (en) * 1999-02-22 2002-03-19 University Of Miami Minicapsulorhexis valve
US6997177B2 (en) * 1999-03-13 2006-02-14 Inno Med Technologies, Inc. Ventilation interface for sleep apnea therapy
US20050039757A1 (en) * 1999-03-13 2005-02-24 Wood Thomas J. Ventilation interface for sleep apnea therapy
US6341606B1 (en) * 1999-05-19 2002-01-29 Mallinckrodt, Inc. Disposable respiratory mask with adhesive skin interface
US6532961B1 (en) * 1999-06-18 2003-03-18 Resmed Limited Forehead support for facial mask
US6347631B1 (en) * 1999-11-09 2002-02-19 Mallinckrodt, Inc. Cantilever device and method for breathing devices and the like
US20030217746A1 (en) * 2000-06-14 2003-11-27 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US20020029780A1 (en) * 2000-06-22 2002-03-14 Frater Robert H. Mask with gusset
US6986352B2 (en) * 2000-06-22 2006-01-17 Resmed Limited Mask with gusset
US20040025882A1 (en) * 2000-07-21 2004-02-12 Stefan Madaus Holding device for a respiratory mask
US7018362B2 (en) * 2000-08-03 2006-03-28 Venetec International, Inc. Dialysis catheter anchoring system
US6530373B1 (en) * 2000-08-04 2003-03-11 Mallinckrodt Inc. Respirator mask
US20030000526A1 (en) * 2001-03-30 2003-01-02 Fred Gobel Method for controlling a ventilator, and system therefor
US20030019495A1 (en) * 2001-05-18 2003-01-30 Palkon David J. Mask cushion and method of using same
US20050051176A1 (en) * 2001-06-18 2005-03-10 Riggins Michael Allen Nasal and oral cannula apnea detection device
US6860270B2 (en) * 2001-08-02 2005-03-01 Joseph A. Sniadach Double barrel ventilation mask for a patient
US7011090B2 (en) * 2001-09-07 2006-03-14 Resmed Limited Elbow for mask assembly
US6679265B2 (en) * 2001-10-25 2004-01-20 Worldwide Medical Technologies Nasal cannula
US20030168063A1 (en) * 2002-03-08 2003-09-11 Gambone Anthony Joseph Pressure face mask and nasal mask
US20050061326A1 (en) * 2002-08-09 2005-03-24 Payne Charles E. Headwear for use by a sleep apnea patient
US20040025885A1 (en) * 2002-08-09 2004-02-12 Payne, Charles E. Headwear for use by a sleep apnea patient
USD485905S1 (en) * 2002-08-09 2004-01-27 Resmed Limited Nasal mask
US20040045551A1 (en) * 2002-09-06 2004-03-11 Ric Investments, Inc. Patient interface with forehead support system
US7318437B2 (en) * 2003-02-21 2008-01-15 Resmed Limited Nasal assembly
US20050011523A1 (en) * 2003-07-18 2005-01-20 Acoba, Llc Method and system of Individually controlling airway pressure of a patient's nares
US7191781B2 (en) * 2003-08-05 2007-03-20 Innomed Technologies, Inc. Nasal ventilation interface and system
US20050033247A1 (en) * 2003-08-06 2005-02-10 Thompson Paul S. Nasal cannula assembly
US20050028822A1 (en) * 2003-08-08 2005-02-10 Tiara Medical Systems, Inc. Sealing nasal cannula
US20050051171A1 (en) * 2003-09-10 2005-03-10 Booth Jamie Lee Nose breathing mask for a medical patient; and method
US20050056286A1 (en) * 2003-09-17 2005-03-17 Huddart Brett John Breathable respiratory mask
US7658189B2 (en) * 2003-12-31 2010-02-09 Resmed Limited Compact oronasal patient interface
US7178525B2 (en) * 2004-02-06 2007-02-20 Ric Investments, Llc Patient interface assembly supported under the mandible
US20080006277A1 (en) * 2004-06-03 2008-01-10 Resmed Limited Cushion for a Patient Interface
US20060060200A1 (en) * 2004-09-21 2006-03-23 Ric Investments, Llc Cheek-mounted patient interface
WO2007009182A1 (en) * 2005-07-19 2007-01-25 Map Medizin-Technologie Gmbh Respiratory mask and method for manufacturing a respiratory mask
US20070023044A1 (en) * 2005-07-29 2007-02-01 Resmed Limited Life style flow generator and mask system
US20080004573A1 (en) * 2006-05-19 2008-01-03 Heiner Kaufmann Adapter for Affixing a Medical Appliance
US20080047560A1 (en) * 2006-07-28 2008-02-28 Resmed Limited Delivery of respiratory therapy
US20080060649A1 (en) * 2006-07-28 2008-03-13 Resmed Limited Delivery of respiratory therapy
US20110146684A1 (en) * 2008-09-12 2011-06-23 Resmed Limited Foam-based interfacing structure method and apparatus

Cited By (100)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8613280B2 (en) 2005-01-12 2013-12-24 Resmed Limited Cushion for patient interface
US8485192B2 (en) 2005-01-12 2013-07-16 Resmed Limited Cushion for patient interface
US10456544B2 (en) 2005-01-12 2019-10-29 ResMed Pty Ltd Cushion for patient interface
US9295800B2 (en) 2005-01-12 2016-03-29 Resmed Limited Cushion for patient interface
US11607515B2 (en) 2005-01-12 2023-03-21 ResMed Pty Ltd Cushion for patient interface
US8550082B2 (en) 2005-01-12 2013-10-08 Resmed Limited Cushion for patient interface
US8550081B2 (en) 2005-01-12 2013-10-08 Resmed Limited Cushion for patient interface
US8550083B2 (en) 2005-01-12 2013-10-08 Resmed Limited Cushion for patient interface
US8616211B2 (en) 2005-01-12 2013-12-31 Resmed Limited Cushion for patient interface
US8555885B2 (en) 2005-01-12 2013-10-15 Resmed Limited Cushion for patient interface
US8567404B2 (en) 2005-01-12 2013-10-29 Resmed Limited Cushion for patient interface
US8573215B2 (en) 2005-01-12 2013-11-05 Resmed Limited Cushion for patient interface
US8573213B2 (en) 2005-01-12 2013-11-05 Resmed Limited Cushion for patient interface
US8573214B2 (en) 2005-01-12 2013-11-05 Resmed Limited Cushion for patient interface
US8578935B2 (en) 2005-01-12 2013-11-12 Resmed Limited Cushion for patient interface
US8613281B2 (en) 2005-01-12 2013-12-24 Resmed Limited Cushion for patient interface
US11369765B2 (en) 2005-10-14 2022-06-28 ResMed Pty Ltd Cushion to frame assembly mechanism
US11529487B2 (en) 2005-10-14 2022-12-20 ResMed Pty Ltd Cushion to frame assembly mechanism
US10434273B2 (en) 2005-10-14 2019-10-08 ResMed Pty Ltd Cushion to frame assembly mechanism
US8944061B2 (en) 2005-10-14 2015-02-03 Resmed Limited Cushion to frame assembly mechanism
US10137270B2 (en) 2005-10-14 2018-11-27 Resmed Limited Cushion to frame assembly mechanism
US11833305B2 (en) 2005-10-14 2023-12-05 ResMed Pty Ltd Cushion/frame assembly for a patient interface
US11633564B2 (en) 2005-10-14 2023-04-25 ResMed Pty Ltd Cushion to frame assembly mechanism
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
US11890418B2 (en) 2005-10-25 2024-02-06 ResMed Pty Ltd Interchangeable mask assembly
US11596757B2 (en) 2005-10-25 2023-03-07 ResMed Pty Ltd Interchangeable mask assembly
US11052211B2 (en) 2005-10-25 2021-07-06 ResMed Pty Ltd Interchangeable mask assembly
US9962510B2 (en) 2005-10-25 2018-05-08 Resmed Limited Respiratory mask assembly
US10183138B2 (en) 2005-10-25 2019-01-22 Resmed Limited Interchangeable mask assembly
US20100101581A1 (en) * 2007-01-22 2010-04-29 Map Medizin-Technologie Gmbh Hollow structure and method/tool for manufacturing same
US8852480B2 (en) * 2007-01-22 2014-10-07 Resmed R&D Germany Gmbh Method for manufacturing hollow structure for breathing mask
US10016571B2 (en) 2007-01-22 2018-07-10 Resmed R&D Germany Gmbh Hollow structure for breathing mask
US8960196B2 (en) 2007-01-30 2015-02-24 Resmed Limited Mask system with interchangeable headgear connectors
US9937315B2 (en) 2007-01-30 2018-04-10 Resmed Limited Mask with removable headgear connector
US10864342B2 (en) 2007-01-30 2020-12-15 ResMed Pty Ltd Mask with removable headgear connector
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
US11395893B2 (en) 2008-03-04 2022-07-26 ResMed Pty Ltd Mask system with snap-fit shroud
US9770568B2 (en) 2008-03-04 2017-09-26 Resmed Limited Mask system with snap-fit shroud
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