GB2397244A - A dual-shot moulded face mask - Google Patents

A dual-shot moulded face mask Download PDF

Info

Publication number
GB2397244A
GB2397244A GB0329270A GB0329270A GB2397244A GB 2397244 A GB2397244 A GB 2397244A GB 0329270 A GB0329270 A GB 0329270A GB 0329270 A GB0329270 A GB 0329270A GB 2397244 A GB2397244 A GB 2397244A
Authority
GB
United Kingdom
Prior art keywords
face mask
mask
gas
mask according
patient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0329270A
Other versions
GB2397244B (en
GB0329270D0 (en
Inventor
John Nash
Lois Rebecca Williams
Simon Neame
Eric Pagan
Giles Andrew Bishop
David Bower
Clive Stinton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smiths Group PLC filed Critical Smiths Group PLC
Publication of GB0329270D0 publication Critical patent/GB0329270D0/en
Publication of GB2397244A publication Critical patent/GB2397244A/en
Application granted granted Critical
Publication of GB2397244B publication Critical patent/GB2397244B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0683—Holding devices therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A61M16/206—Capsule valves, e.g. mushroom, membrane valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • A61M16/209—Relief valves
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/76—Moulding on edges or extremities of the preformed part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J15/00—Feeding-tubes for therapeutic purposes
    • A61J15/0003—Nasal or oral feeding-tubes, e.g. tube entering body through nose or mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0225—Carbon oxides, e.g. Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps

Abstract

A face mask has a relatively soft canopy 1 and a more rigid reinforcement member 2 moulded together from different plastics as two shots in a dual shot moulding process. The peripheral sealing edge 10 of the canopy 1 is tapered to a reduced thickness to increase its flexibility. The reinforcement member is a frame 2 with radially extending arms 20,21 and 22 supporting respectively a gas port 23 by which gas can enter the mask, a valve 25 that allows air into the mask when there is an inadequate supply at the gas port and a selectively closeable vent 30. The mask is secured to the patients's head by a harness (40, 140, Fig 2) attached to ends 24,26 of the harness arms 21 and 22.

Description

: . . l
FACE MASKS
This invention relates to face masks.
Face masks are used to supply gas to a patient for various purposes and are designed to seal with the skin surface around the nose and mouth. There are many different forms of face mask currently available but often these suffer from disadvantages such as large bulk, weight, discomfort in use or poor sealing.
It is an object of the present invention to provide an alternative face mask.
According to one aspect of the present invention there is provided a face mask of a plastics material comprising a relatively soft canopy member having a peripheral sealing edge providing a seal with the skin around the nose and mouth of a patient, the canopy member being moulded as one shot in a dual-shot moulding process, a relatively rigid reinforcement member being moulded integrally with the canopy member as another shot in the dual-shot moulding process, and the mask having a gas port by which gas can enter the mask.
The peripheral sealing edge of the canopy preferably is tapered to a reduced thickness and an increased flexibility at its edge. The gas port is preferably provided on the reinforcement member. The gas port may have a connector projecting therefrom for connection to a gas supply tube, the port being located in line with the mouth of the patient and the connector being angled such that it projects down when the mask is applied to the patient's face in an upright position. The face mask preferably includes a valve separate from the gas port, the valve being arranged to allow air to flow into the mask when there is an inadequate supply at the gas port. The valve may be provided on the reinforcement member.
The mask preferably includes selectively closable vent means that can be opened to allow flow of gas out of the mask, and the vent means may include a cap member movable between two discrete positions where the vent is open or closed respectively. The vent means is preferably provided on the reinforcement member. The reinforcement member is preferably a frame with a plurality of radially-extending arms. Two of the arms may extend towards opposite edges of the mask and be terminated by lateral bars extending substantially parallel to the edge of the mask. The lateral bars may support fastening means for a harness extending around the head of the patient. The mask preferably includes three arms supporting respectively a gas port, a valve to allow gas to enter the mask and a vent that can be opened to allow gas to flow out of the mask. The mask may include a harness adapted to extend around the head of the patient and attached at opposite ends with the reinforcement member.
Opposite ends of the harness may be of triangular shape having a free end extending rearwardly, the free end being adjustably attachable with a part of the harness.
According to another aspect of the present invention there is provided a method of making a face mask comprising the steps of moulding a first component in a mould from a relatively high temperature plastics material and subsequently moulding a second component from a relatively low temperature plastics material directly on the first component while the first component is in the mould.
According to a further aspect of the present invention there is provided a face mask made by a method according to the above other aspect of the invention.
A face mask according to the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a front view of the mask; Figure 2 is a side elevation view of the mask on the face of a patient; Figure 3 is a sectional side elevation view of the mask; Figures 4 and 5 are sectional side elevation views of a part of the mask to an enlarged scale indicating how it seals on the face; Figure 6 is a perspective view of a controlled leak device; Figure 7 is a sectional side elevation view of an anti-asphyxia valve; Figure 8 shows two straps used in the mask harness; Figure 9 is a side elevation view of the mask showing an alternative harness; Figure 10 is an elevation view of the edge of the mask showing a tube access; and Figure 1 1 is a sectional view of the tube access of Figure 10.
With reference first to Figures 1 to 5, the mask comprises two parts, namely a canopy 1 and a support frame 2. The canopy 1 is moulded of a relatively soft, flexible plastics material, such as, SEBS styrene ethylene butadiene styrene, whereas the support frame 2 is moulded of a harder material, such as a polypropylene copolymer. The canopy 1 and support frame 2 are moulded integrally with one another by a dual-shot moulding process in which the higher temperature plastics material forming the frame 2 is moulded first in a mould cavity, then the mould is enlarged to form a cavity for the canopy, which is subsequently moulded from a lower temperature plastics material. This results in the canopy and support frame being integrally bonded together.
The canopy 1 is of generally triangular shape with a peripheral edge 10 shaped to extend under the mouth, up the cheeks, along the sides and across the nose. The canopy 1 has a domed internal cavity 1 1 in which the nose is received. The edge 10 is curved inwardly into the cavity in a C shape so that, when the mask is placed against the face, as shown in Figures 4 and 5, a curved contact region 12 contacts the skin with the lip 13 being on or spaced slightly above the skin. The canopy 1 varies in thickness from about 2mm across most of its surface tapering to about 1. 5mm in the contact region 12 and to about 0.7mm at the lip 13.
This makes the edge 10 very flexible. The seal with the patient's skin could be further enhanced by an adhesive material on the contact region.
The frame member 2 has a generally star shape with three radiallyextending arms 20, 21 and 22. One arm 20 projects down and is formed with a gas connector port 23 positioned in line with the patient's mouth and angled downwardly at an angle of about 20 to the horizontal when mounted on the patient's face in an upright position. A second arm 21 projects upwardly to the left, as viewed in Figure 1, and includes a controlled leak device 30 to be described in greater detail later. The second arm 21 is terminated by a lateral bar 24 extending parallel to the edge of the mask in the region of the patient's right cheek. The third arm 22 projects upwardly towards the right and includes an anti-asphyxia valve 25, as described in greater detail later. The third arm is terminated by a lateral bar 26 extending parallel to the edge of the mask in the region of the patient's left cheek.
Moulding the face mask in a dual-shot process gives various advantages. It enables the mask to made very thin and light in weight with a very flexible seal whilst having sufficient rigidity across its central portion to support the connector and the various other components without deformation. Because the mask can be made thin, the upper part of the mask can be shaped to follow closely the profile of the nose. This reduces interference to the patient's eyesight and can make the mask less claustrophobic than some previous masks. The dual-shot process also enables the mask to be made with high transparency so that the part of the face enclosed by the mask can be seen clearly by the clinician.
The controlled leak device 30 is shown most clearly in Figures 6 and 7 and is formed of two components, namely a base 31 and a cap 32. The base 31 comprises a circular plate 33 secured in an aperture in the frame 2. The plate 33 has three gas passages 34 extending through it and a central stem 35 projecting from the external surface. The stem 35 is hollow and cylindrical with a male luer slip surface to receive a female connector. The stem 35 also has key formations 36 on its outer surface. The cap 32 has a plate 37 of the same diameter as the base plate 33 and with three openings 38 spaced in the same manner as the passages 34. A hollow sleeve 39 projects from the centre of the plate 33. The sleeve 39 is shaped to fit on the stem 35 and has keyway formations on its inner surface (not shown). The key and keyway formations are arranged to prevent rotation of the cap 32 on the base 31 and to ensure that the cap can only be fitted on the base either with the openings 38 aligned with the gas passages 34 or with them not aligned and thereby preventing flow of gas. When the cap 32 is mounted on the base with the openings 38 aligned with the gas passages this permits a small flow of gas through the leak device. This is sufficient to allow air exhaled by the patient to flow out through the leak without enabling pressure of gas supplied to the mask to fall below the level needed for CPAP ventilation. When the cap 32 is removed, a tube (not shown) can be connected to the tapered stem 35 for carbon dioxide sampling purposes.
The anti-asphyxia valve 25 is shown in Figure 7 and includes a rigid plate 70, which is flat on its upper, outer surface 71 and has a concave, domed recess 72 on its lower, inner surface. Four holes 73 extend through the plate 70 between the recess 72 and the outer surface 71 and are equally distributed around the edge of the recess. A narrow ledge 74 extends around the outside of the recess 72. The valve 25 also includes a flexible, resilient diaphragm 75 providing a valve member for the valve. The diaphragm 75 has a peripheral ledge 76, which is clamped on the ledge 74 by a ring (not shown), and a domed central portion 77 with a central aperture 78. The radius of curvature of the domed portion 77 in its natural state is greater than that of the recess 72 so that it is spaced away from the recess and allows free flow of gas through the aperture 78 and holes 73. When the internal pressure within the mask is raised, the domed portion 77 is forced outwardly, that is, upwardly into contact with the recess 72, thereby sealing the holes 73 closed. The valve 25, therefore, closes when there is high gas pressure within the mask but opens when gas pressure drops, thereby permitting the patient to breath atmospheric air in through the valve. Other, conventional forms of valve could be used to allow the patient to inhale via the valve should there be an obstruction to gas flow to the inlet port 23. Previous anti- asphyxia valves have been incorporated into the gas inlet port connection but this has the disadvantage of increasing the bulk at the inlet and thereby increasing the bending moment exerted on the mask by the associated inlet tubing.
Attached to both lateral bars 24 and 26 is a strip 27 and 28 of a hook fastening material, such as of the kind sold under the Velcro trade mark (Velcro is a Registered Trade Mark of Velcro BV), which is used to secure an end of a harness 40. The harness 40 comprises two flexible, elastic straps 41 and 42, as shown in Figure 8, which both have a pad 43 and 44 of a loop fastening material at one end so that they can be secured with the strips 27 and 28 on the mask frame 2. At their other ends, one strap 41 has a pad 45 of a hook material and the other strap 42 has a pad 46 of a loop material. Opposite ends of the straps 41 and 42 are enlarged laterally to accommodate the pads 43 to 46. In this way, the straps 41 and 42 can be secured with one another at one end at the back of the patient's head and can be secured at their other ends with the mask frame 2. The arrangement allows for the straps to be secured to the frame and to one another at any angle, thereby allowing flexibility in positioning of the harness so as to accommodate a variety of patients.
An alterrative harness arrangement 140 is illustrated in Figure 9. This harness 140 has two straps 141, only one of which is shown, which are fastened together at the back of the head by hook and loop fastening material (not shown). The straps 141 are fastened to the mask itself by means of two posts 142 and 143 projecting from the side of the mask and spaced one above the other, which extend through apertures 142' and 143' in the straps. The forward end ofthe straps 141 is oftriangular shape having a lateral portion 144 extending upwardly at an angle of about 90 to the main part of the strap, and a rearwardly-extending portion 145 extending rearwardly and downwardly at an angle of about 45 to the upper end of the lateral portion. The rearwardly-extending portion 145 has a free rear end to which is attached a pad 146 of a hook or loop material, which attaches to a cooperating pad 147 on the main part of the strap. This arrangement enables the pressure exerted by the mask on the face to be adjusted to alter its distribution. Pressure exerted by the upper part of the mask can be increased or reduced by appropriately moving the end of the portion 145 to attach it to a part of the pad 147 that is further back or further forwards. The straps 141 each have a quick- release tab 148 in the region of the upper aperture 142'. One or both of these tabs 148 can be pulled down to release the harness 141 from the mask.
Various modifications are possible to the mask. The edge seal of the mask may be modified to allow a nasogastric tube 90 to pass through the edge 10, as shown in Figures 10 and 11. In this arrangement the edge of the mask is moulded with a keyhole-shape formation 91 of reduced thickness, which can be easily torn or cut. The keyhole- shape formation 91 has a very narrow entrance portion slit 92 extending to the edge, and a circular sleeve portion 93 located above it and projecting a short distance inwardly. When used without a nasogastric tube, this formation is left in place so that there is no path for gas leakage in this region.
When a nasogastric tube is to be used, the keyhole-shape formation is torn or cut to form a keyhole-shape aperture so that the tube 90 can be pushed sideways in through the narrow part of the aperture, which may be self-closing, and located in the circular, sleeve part of the aperture where it is a close, sealing fit. If the mask needs to be removed at any time, the tube can be easily peeled out of the aperture so that its patient end can be left in place in the patient and its machine end need not be disconnected from any apparatus to which it is connected. The mask can be subsequently replaced on the patient after having pushed the nasogastric tube into the aperture.

Claims (21)

1. A face mask of a plastics material comprising a relatively soft canopy member having a peripheral sealing edge providing a seal with the skin around the nose and mouth of a patient, wherein the canopy member is moulded as one shot in a dual-shot moulding process, wherein a relatively rigid reinforcement member is moulded integrally with the canopy member as another shot in the dual-shot moulding process, and wherein the mask has a gas port by which gas can enter the mask.
2. A face mask according to Claim 1, wherein the peripheral sealing edge of the canopy is tapered to a reduced thickness and an increased flexibility at its edge.
3. A face mask according to Claim 1 or 2, wherein the gas port is provided on the reinforcement member.
4. A face mask according to any one of the preceding claims, wherein the gas port has a gas connector projecting therefrom for connection to a gas supply tube, and wherein the port is located in line with the mouth of the patient and the connector is angled such that it projects down when the mask is applied to the patient's face in an upright position.
5. A face mask according to any one of the preceding claims including a valve separate from the gas port, wherein the valve is arranged to allow air to flow into the mask when there is an inadequate supply at the gas port.
6. A face mask according to Claim 5, wherein the valve is provided on the reinforcement member.
7. A face mask according to any one of the preceding claims including selectively closable vent means that can be opened to allow flow of gas out of the mask.
8. A face mask according to Claim 7, wherein the vent means includes a cap member movable between two discrete positions where the vent is open or closed respectively.
9. A face mask according to Claim 7 or 8, wherein the vent means is provided on the reinforcement member.
10. A face mask according to any one of the preceding claims, wherein the reinforcement member is a frame with a plurality of radially-extending arms.
A face mask according to Claim 10, wherein two of said arms extend towards opposite edges of mask and are terminated by lateral bars extending substantially parallel to the edge of the mask.
12. A face mask according to Claim 11, wherein the lateral bars support fastening means for a harness extending around the head of the patient.
13. A face mask according to any one of Claims 10 to 12, including three arms supporting respectively a gas port, a valve to allow gas to enter the mask and a vent that can be opened to allow gas to flow out of the mask.
14. A face mask according to any one of the preceding claims including a harness adapted to extend around the head of the patient and attached at opposite ends with the reinforcement member.
15. A face mask according to Claim 14, wherein the opposite ends of the harness are of triangular shape having a free end extending rearwardly and wherein the free end is adjustably attachable with a part of the harness.
16. A method of making a face mask comprising the steps of moulding a first component in a mould from a relatively high temperature plastics material and subsequently moulding a second component from a relatively low temperature plastics material directly on the first component while the first component is in the mould.
17. A method of making a face mask substantially as hereinbefore described with reference to the accompanying drawings.
18. A face mask made by a method according to Claim 16 or 17.
19. A face mask substantially as hereinbefore described with reference to Figures 1 to 8 of the accompanying drawings.
20. A face mask substantially as hereinbefore described with reference to Figures 1 to 8 as modified by Figure 9 or 10 of the accompanying drawings.
21. Any novel and inventive feature or combination of features as hereinbefore described.
GB0329270A 2003-01-15 2003-12-18 Face masks Expired - Fee Related GB2397244B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0300875.2A GB0300875D0 (en) 2003-01-15 2003-01-15 Face masks

Publications (3)

Publication Number Publication Date
GB0329270D0 GB0329270D0 (en) 2004-01-21
GB2397244A true GB2397244A (en) 2004-07-21
GB2397244B GB2397244B (en) 2006-02-15

Family

ID=9951171

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0300875.2A Ceased GB0300875D0 (en) 2003-01-15 2003-01-15 Face masks
GB0329270A Expired - Fee Related GB2397244B (en) 2003-01-15 2003-12-18 Face masks

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0300875.2A Ceased GB0300875D0 (en) 2003-01-15 2003-01-15 Face masks

Country Status (2)

Country Link
US (1) US20050098183A1 (en)
GB (2) GB0300875D0 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009182A1 (en) * 2005-07-19 2007-01-25 Map Medizin-Technologie Gmbh Respiratory mask and method for manufacturing a respiratory mask
WO2007125499A2 (en) * 2006-05-01 2007-11-08 Kimberly-Clark Worldwide, Inc. Respirator with exhalation vents
WO2008023028A1 (en) * 2006-08-23 2008-02-28 Nierhaus, Stefan Individually adapted breathing mask
WO2009063238A1 (en) 2007-11-13 2009-05-22 Intersurgical Ag Improvements relating to anti-asphyxiation valves
EP2073881A1 (en) * 2006-09-28 2009-07-01 Australian Centre For Advanced Medical Technology Pty Ltd Improved respirator mask
WO2010073138A1 (en) * 2008-12-22 2010-07-01 Koninklijke Philips Electronics, N.V. Respiratory interface device with flexible cover
JP2010536407A (en) * 2007-08-16 2010-12-02 キンバリー クラーク ワールドワイド インコーポレイテッド Exhaust and strap fastening system for disposable masks with improved wearability
GB2426953B (en) * 2005-05-28 2011-04-27 Intersurgical Ag Improvements relating to respiratory apparatus
CN103068431A (en) * 2010-09-01 2013-04-24 雷斯梅德有限公司 Mask system
AU2012244359B2 (en) * 2005-07-19 2013-09-19 Resmed Limited Respiratory Mask and Method for Manufacturing a Respiratory Mask
WO2015110605A1 (en) * 2014-01-24 2015-07-30 Intersurgical Ag Respiratoy mask with corrugated gas inlet
USD754328S1 (en) 2014-05-22 2016-04-19 Intersurgical Ag Respiratory mask
US9642403B2 (en) 2007-08-16 2017-05-09 Kimberly-Clark Worldwide, Inc. Strap fastening system for a disposable respirator providing improved donning
US9757533B2 (en) 2008-03-04 2017-09-12 Resmed Limited Mask system with snap-fit shroud
EP3067085B1 (en) * 2015-03-09 2019-10-23 Dimar S.R.L. Mask for the respiratory therapy with dedicated access for a nasogastric tube
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud
US11969552B2 (en) 2022-06-28 2024-04-30 ResMed Pty Ltd Mask system with radially positioned vent holes

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20017940U1 (en) 2000-10-19 2000-12-28 Map Gmbh Breathing mask for supplying a breathing gas to a mask user and a derivation device for deriving breathing gas
US7216647B2 (en) 2001-09-07 2007-05-15 Resmed Limited Forehead pad for respiratory mask
US7320323B2 (en) 2001-10-22 2008-01-22 Map Medizin-Technologie Gmbh Breathing mask device and application device and frontal support device thereof
DE10201682A1 (en) 2002-01-17 2003-07-31 Map Medizin Technologie Gmbh The breathing mask arrangement
DE10151984C5 (en) 2001-10-22 2008-07-17 Map Medizin-Technologie Gmbh Application device for a breathing mask arrangement
NZ578600A (en) 2003-05-02 2011-02-25 Resmed Ltd A mask system for apnea vent holes in flexible shell and cushion as integral unit
WO2005079726A1 (en) 2004-02-23 2005-09-01 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
EP3936180B1 (en) 2004-04-02 2023-11-29 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US9072852B2 (en) 2004-04-02 2015-07-07 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US20060000476A1 (en) * 2004-07-01 2006-01-05 Salem M R Retaining system for securing a ventilation mask
EP1890755B1 (en) 2005-06-06 2019-12-25 ResMed Pty Ltd Mask system
US8397728B2 (en) 2005-10-14 2013-03-19 Resmed Limited Cushion to frame assembly mechanism
NZ612787A (en) 2005-10-25 2015-01-30 Resmed Ltd Interchangeable mask assembly
US20100224199A1 (en) * 2006-05-01 2010-09-09 Kimberly-Clark Worldwide, Inc. Respirator
US20080110465A1 (en) * 2006-05-01 2008-05-15 Welchel Debra N Respirator with exhalation vents
US8874251B2 (en) * 2006-07-06 2014-10-28 Airway Technologies, Llc System and method for forming a custom medical mask from a three-dimensional electronic model
CA2998247A1 (en) 2006-07-14 2008-01-17 Fisher & Paykel Healthcare Limited Breathing assistance apparatus with support member
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
RU2433845C1 (en) * 2007-09-20 2011-11-20 3М Инновейтив Пропертиз Компани Filtering respiratory face mask with frame, which is support for breathing valve
US20090235934A1 (en) 2008-03-24 2009-09-24 3M Innovative Properties Company Filtering face-piece respirator having an integrally-joined exhalation valve
US10258757B2 (en) 2008-05-12 2019-04-16 Fisher & Paykel Healthcare Limited Patient interface and aspects thereof
US10792451B2 (en) 2008-05-12 2020-10-06 Fisher & Paykel Healthcare Limited Patient interface and aspects thereof
EP2130563B1 (en) * 2008-06-04 2012-02-15 ResMed Limited Patient interface systems
US8113201B2 (en) 2008-06-30 2012-02-14 Kimberly-Clark Worldwide, Inc. Collapse resistant respirator
US11660413B2 (en) 2008-07-18 2023-05-30 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US9901700B2 (en) 2008-10-10 2018-02-27 Fisher & Paykel Healthcare Limited Nasal pillows for a patient interface
WO2010051585A1 (en) * 2008-11-07 2010-05-14 Australian Centre For Advanced Medical Technology Pty Ltd Headgear support for respirator mask
US9149593B2 (en) 2009-05-29 2015-10-06 Resmed Limited Nasal mask system
WO2011062510A1 (en) 2009-11-18 2011-05-26 Fisher & Paykel Healthcare Limited Nasal interface
CN105771053B (en) 2009-11-20 2020-03-13 瑞思迈私人有限公司 Mask system
EP2515981B1 (en) 2009-12-23 2021-08-18 Fisher & Paykel Healthcare Limited Patient interface and headgear
WO2012047121A1 (en) 2010-10-08 2012-04-12 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
CN106823090A (en) 2011-04-15 2017-06-13 费雪派克医疗保健有限公司 Interface including wrap-up bridge of the nose part
US10603456B2 (en) 2011-04-15 2020-03-31 Fisher & Paykel Healthcare Limited Interface comprising a nasal sealing portion
US20120289851A1 (en) * 2011-05-11 2012-11-15 Varga Christopher M Carbon-dioxide sampling device for noninvasively measuring carbon dioxide in exhaled breath
TWI608850B (en) * 2011-06-23 2017-12-21 Fisher & Paykel Healthcare Ltd An interface assembly including a mask assembly
US10463824B2 (en) * 2011-10-14 2019-11-05 Musc Foundation For Research Development Ventilation devices and methods of use
SG10201700946YA (en) 2012-08-08 2017-03-30 Fisher & Paykel Healthcare Ltd Headgear for patient interface
WO2014038959A1 (en) 2012-09-04 2014-03-13 Fisher & Paykel Healthcare Limited Valsalva mask
TWM472535U (en) * 2012-12-10 2014-02-21 Besmed Health Business Corp Anti-slip mask
US20140238400A1 (en) * 2013-02-25 2014-08-28 Intersurgical Ag Respiratory mask
EP3939643A1 (en) 2013-03-15 2022-01-19 Fisher & Paykel Healthcare Limited Nasal cannula assemblies
US11235119B2 (en) 2013-03-15 2022-02-01 Lucy Carol Davis Facial mask apparatus and method of making
US10004866B2 (en) * 2013-03-15 2018-06-26 Lucy Carol Davis Facial mask apparatus and method of making
US11235120B2 (en) 2013-03-15 2022-02-01 Lucy Carol Davis Facial mask apparatus with removable filter
EP2805748B1 (en) * 2013-05-24 2018-09-26 Drägerwerk AG & Co. KGaA Respiration mask with emergency respiration valve
DE112014003604T5 (en) 2013-08-05 2016-06-02 Fisher & Paykel Healthcare Limited Seal for a patient interface, junction assemblies, and aspects thereof
USD746439S1 (en) 2013-12-30 2015-12-29 Kimberly-Clark Worldwide, Inc. Combination valve and buckle set for disposable respirators
EP4272793A3 (en) * 2014-03-27 2023-12-27 Fisher & Paykel Healthcare Limited Pressurizing mask
SG11201608616VA (en) 2014-06-17 2017-01-27 Fisher & Paykel Healthcare Ltd Patient interfaces
JP7117103B2 (en) 2014-08-25 2022-08-12 フィッシャー アンド ペイケル ヘルスケア リミテッド Respirators and related parts, components or subassemblies
US10828452B2 (en) 2014-09-16 2020-11-10 Fisher & Paykel Healthcare Limited Intramold headgear
US10646680B2 (en) 2014-09-19 2020-05-12 Fisher & Paykel Healthcare Limited Headgear assemblies and interface assemblies with headgear
CN104274332B (en) * 2014-10-27 2018-03-16 中国医学科学院北京协和医院 The oral cavities conduit pipe detection auxiliary mask of multipurpose
WO2016075658A1 (en) 2014-11-14 2016-05-19 Fisher & Paykel Healthcare Limited Patient interface
WO2016097941A2 (en) * 2014-12-17 2016-06-23 Koninklijke Philips N.V. Fresh air and anti-asphyxiation assembly
US10994090B2 (en) 2015-09-04 2021-05-04 Fisher & Paykel Healthcare Limited Patient interfaces
US10589079B2 (en) 2016-01-27 2020-03-17 Jennifer A. LINTON Breathing mask
SG11201807699TA (en) 2016-03-16 2018-10-30 Fisher & Paykel Healthcare Ltd Strap assembly, strap connector, headgear, headgear assembly, method of forming headgear, tubular connector, patient interface and method of joining straps
AU2017234346B2 (en) 2016-03-16 2022-06-30 Fisher & Paykel Healthcare Limited Directional lock for interface headgear arrangement
EP3429669B1 (en) 2016-03-16 2022-11-16 Fisher & Paykel Healthcare Limited Method for manufacturing a headgear assembly for a respiratory interface
US10449325B2 (en) * 2016-03-24 2019-10-22 Rainbow Vista Medical Devices, Inc. Positive airway pressure respiration mask
CN110035789B (en) * 2016-10-05 2022-06-10 费雪派克医疗保健有限公司 Patient interface
USD821570S1 (en) 2017-01-26 2018-06-26 Jennifer A. LINTON Breathing mask
USD823454S1 (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
USD823455S1 (en) 2017-02-23 2018-07-17 Fisher & Paykel Healthcare Limited Cushion assembly for breathing mask assembly
EP3624885A4 (en) 2017-05-19 2021-03-10 Trudell Medical International Positive expiratory pressure device
WO2018217103A1 (en) 2017-05-22 2018-11-29 Fisher & Paykel Healthcare Limited A respiratory user interface
CN117618719A (en) 2018-03-16 2024-03-01 费雪派克医疗保健有限公司 Headgear with lock-release engagement mechanism
USD884153S1 (en) 2018-04-04 2020-05-12 Fisher & Paykel Healthcare Limited Frame for a mask assembly
USD903097S1 (en) 2018-05-18 2020-11-24 Trudell Medical International Mask
USD874064S1 (en) 2018-05-18 2020-01-28 Trudell Medical International Mask
USD893806S1 (en) 2018-11-09 2020-08-18 Trudell Medical Internationl Mask and shroud
US11648363B2 (en) * 2020-04-02 2023-05-16 Alphonso Quinones Positive pressure ventilation apparatus and positive pressure mask
CN113476309B (en) * 2021-06-17 2022-06-10 新疆维吾尔自治区人民医院 Gastroenterology nursing is with nasogastric tube fixing device
CN114053545B (en) * 2021-12-21 2023-05-05 郑州大学第一附属医院 Leak protection gas anaesthetic mask with stomach tube fixing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020020416A1 (en) * 2000-08-11 2002-02-21 David Namey Two-shot injection molded nasal/oral mask
WO2003016018A1 (en) * 2001-08-17 2003-02-27 Intersurgical Limited Anatomical mask

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444417A (en) * 1945-02-27 1948-07-06 Howard R Bierman Oxygen mask
US2837090A (en) * 1955-07-06 1958-06-03 Bloom Aaron Universal aviators oxygen breathing mask
US4856508A (en) * 1987-04-13 1989-08-15 New England Thermoplastics, Inc. Face mask
US5465712A (en) * 1993-07-30 1995-11-14 Valley Forge Scientific Corporation Resuscitation mask having ribs in the air flow conduit and mask body
US5655527A (en) * 1994-06-03 1997-08-12 Respironics Inc. Respiratory mask with floating seal responsive to pressurized gas
US6497232B2 (en) * 1999-02-22 2002-12-24 Cabot Safety Intermediate Corporation Respirator headpiece and release mechanism
US6338342B1 (en) * 1999-02-22 2002-01-15 Cabot Safety Intermediate Corporation Respirator headpiece and release mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020020416A1 (en) * 2000-08-11 2002-02-21 David Namey Two-shot injection molded nasal/oral mask
WO2003016018A1 (en) * 2001-08-17 2003-02-27 Intersurgical Limited Anatomical mask

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2426953B (en) * 2005-05-28 2011-04-27 Intersurgical Ag Improvements relating to respiratory apparatus
US10864341B2 (en) 2005-07-19 2020-12-15 ResMed Pty Ltd Respiratory mask
WO2007009182A1 (en) * 2005-07-19 2007-01-25 Map Medizin-Technologie Gmbh Respiratory mask and method for manufacturing a respiratory mask
US8596273B2 (en) 2005-07-19 2013-12-03 Resmed R&D Germany Gmbh Respiratory mask and method for manufacturing a respiratory mask
AU2012244359B2 (en) * 2005-07-19 2013-09-19 Resmed Limited Respiratory Mask and Method for Manufacturing a Respiratory Mask
WO2007125499A3 (en) * 2006-05-01 2008-03-27 Kimberly Clark Co Respirator with exhalation vents
WO2007125499A2 (en) * 2006-05-01 2007-11-08 Kimberly-Clark Worldwide, Inc. Respirator with exhalation vents
WO2008023028A1 (en) * 2006-08-23 2008-02-28 Nierhaus, Stefan Individually adapted breathing mask
EP2073881A1 (en) * 2006-09-28 2009-07-01 Australian Centre For Advanced Medical Technology Pty Ltd Improved respirator mask
EP2073881A4 (en) * 2006-09-28 2013-08-21 Au Ct Advanced Med Technology Improved respirator mask
JP2010536407A (en) * 2007-08-16 2010-12-02 キンバリー クラーク ワールドワイド インコーポレイテッド Exhaust and strap fastening system for disposable masks with improved wearability
US9642403B2 (en) 2007-08-16 2017-05-09 Kimberly-Clark Worldwide, Inc. Strap fastening system for a disposable respirator providing improved donning
WO2009063238A1 (en) 2007-11-13 2009-05-22 Intersurgical Ag Improvements relating to anti-asphyxiation valves
US8646449B2 (en) 2007-11-13 2014-02-11 Intersurgical Ag Anti-asphyxiation valves
EP2259826B1 (en) * 2008-03-04 2020-12-16 ResMed Pty Ltd Mask assembly
US10751496B2 (en) 2008-03-04 2020-08-25 ResMed Pty Ltd Mask system with shroud
US11833277B2 (en) 2008-03-04 2023-12-05 ResMed Pty Ltd Mask system with snap-fit shroud
US11529488B2 (en) 2008-03-04 2022-12-20 ResMed Pty Ltd Mask system with snap-fit shroud
US11529486B2 (en) 2008-03-04 2022-12-20 ResMed Pty Ltd Mask system with shroud having extended headgear connector arms
US11395893B2 (en) 2008-03-04 2022-07-26 ResMed Pty Ltd Mask system with snap-fit shroud
US9757533B2 (en) 2008-03-04 2017-09-12 Resmed Limited Mask system with snap-fit shroud
US9770568B2 (en) 2008-03-04 2017-09-26 Resmed Limited Mask system with snap-fit shroud
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud
US9950131B2 (en) 2008-03-04 2018-04-24 Resmed Limited Mask system with snap-fit shroud
US9962511B2 (en) 2008-03-04 2018-05-08 Resmed Limited Mask system with snap-fit shroud
US11305085B2 (en) 2008-03-04 2022-04-19 ResMed Pty Ltd Mask system with snap-fit shroud
US11077274B2 (en) 2008-03-04 2021-08-03 ResMed Pty Ltd Mask system with snap-fit shroud
US9919120B2 (en) 2008-12-22 2018-03-20 Koninklijke Philips N.V. Respiratory interface device with flexible cover
CN102264424A (en) * 2008-12-22 2011-11-30 皇家飞利浦电子股份有限公司 Respiratory interface device with flexible cover
WO2010073138A1 (en) * 2008-12-22 2010-07-01 Koninklijke Philips Electronics, N.V. Respiratory interface device with flexible cover
EP2444113A3 (en) * 2008-12-22 2012-08-15 Koninklijke Philips Electronics N.V. Respiratory interface device with flexible cover
US10850058B2 (en) 2010-09-01 2020-12-01 ResMed Pty Ltd Mask system
US9993606B2 (en) 2010-09-01 2018-06-12 Resmed Limited Mask system
CN103068431A (en) * 2010-09-01 2013-04-24 雷斯梅德有限公司 Mask system
CN103068431B (en) * 2010-09-01 2015-11-25 瑞思迈有限公司 Mask system
US11819616B2 (en) 2010-09-01 2023-11-21 ResMed Pty Ltd Mask system
WO2015110605A1 (en) * 2014-01-24 2015-07-30 Intersurgical Ag Respiratoy mask with corrugated gas inlet
USD754328S1 (en) 2014-05-22 2016-04-19 Intersurgical Ag Respiratory mask
EP3067085B1 (en) * 2015-03-09 2019-10-23 Dimar S.R.L. Mask for the respiratory therapy with dedicated access for a nasogastric tube
US11969552B2 (en) 2022-06-28 2024-04-30 ResMed Pty Ltd Mask system with radially positioned vent holes

Also Published As

Publication number Publication date
GB2397244B (en) 2006-02-15
GB0329270D0 (en) 2004-01-21
GB0300875D0 (en) 2003-02-12
US20050098183A1 (en) 2005-05-12

Similar Documents

Publication Publication Date Title
US20050098183A1 (en) Face masks
US11602606B2 (en) Respiratory mask
JP6783331B2 (en) Patient interface and headgear
JP6929922B2 (en) Flexible exoskeleton mask with inflatable seal member
CA2310919C (en) Air mask with seal
JP4882018B2 (en) Non-extensible headgear and CPAP or ventilator mask with them
EP0462701B1 (en) Nasal mask
US7353827B2 (en) Mask, mask shell and seal with improved mounting, mask seal, method of mask manufacture and mask with reduced exhalation noise
US7219670B2 (en) Method for securing a nasal mask
US7856982B2 (en) Patient interface device
US7044130B2 (en) Adjustable nasal mask
AU2005100738B4 (en) Patient interface device
CA2375928C (en) Nose mask
EP1301233B1 (en) Nasal mask with integrally moulded straps
US5806515A (en) Supplemental oxygen adapter for tracheostomy speaking valves
US7152602B2 (en) Mask apparatus
US20040211428A1 (en) Nasal mask cushion
US20020096178A1 (en) Nasal mask with balloon exhalation valve
US20040216747A1 (en) Nasal mask with lockable air inlet
US8534285B2 (en) Respiratory mask
US20030121520A1 (en) Mouthpiece to prevent air leakage and method for using the same
AU643994B2 (en) Nasal mask
US10384027B2 (en) Nasal mask for use in various positive airway pressure supply systems

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20131218