US2902033A - Inhaler mask with visual means - Google Patents

Inhaler mask with visual means Download PDF

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US2902033A
US2902033A US728606A US72860658A US2902033A US 2902033 A US2902033 A US 2902033A US 728606 A US728606 A US 728606A US 72860658 A US72860658 A US 72860658A US 2902033 A US2902033 A US 2902033A
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mask
pane
inhaler
visual means
window
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Jr Ellis A Galleher
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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
    • A61M16/01Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes specially adapted for anaesthetising

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  • One of the objectsof this invention isto provide a mask -of'the inhaler type .and preferablyiormed otelectr-ically .conduetivedatex.or rubber .and having a peripheral cell for contouring the-mask to theiacial-icontour to which ,it'is appliedand to providedntsuch a mask means .whenebythe area pf-the patienfis face coveredby the mask; use maybe. observledirorn theexter-iorof the maskithereby permitting the attendantidirect observation of-the color-,of .thepatients.
  • lips as an-indeX: toithe oxygen content in blood, and ⁇ QnObSfiH/fi breathing conditions as wellaas the presence of ,vorn-itus. -.All.thes.e ,factors are of. prime importance :in :mainta ning .a high .degree of safety 1 in rthe administration of anesthetics.
  • a -fu-rther object of the invention 1 is the provision of wisual a means in 4 the Mall-of; an inhaler type I mask which will insure a higher safety factor in the use of thevmask for the application of anesthetics.
  • Another :ohject of thednvention is to provide visual means in opposedwallsnf masks-hereby permitting more light to enter the mask in use.
  • a further and importantobjeet of-the-invention is the provision of visualmeansin/a mask ,of the inhaler type ,whichgmay ,be kept free of condensation while in .nse.
  • the degree-rot logging of the visual means is,.,of'course, anindex to' the "degree of activity in the patients breath-
  • Another object of the invention is a mask of the above identified type and having transparent windows in its side walls and having associated with said windows wiper means may be operated from the outside of the mask by the attendant to keep the inner surfaces of the windows clear of condensation or vapor which otherwise would collect and cloud the vision through the windows during the use of the mask in supplying anesthetics and other gases to the patient.
  • a further object is a mask construction possessing extremely high safety characteristics in combining Visual means for observation of the patients condition, such as breathing, oxygen content in the blood, or the presence of vomitus, together with an electrical conductive mask 2,902,033 Patented Sept. 1, 1959 2 body for grounding theypatient to the anestheticmachine to eliminate theipossibility of explosion due .to static discharges in the presence of the anesthetic gas.
  • Figure 1 is a viewsof a mask ineorporatingmy invention as seen from the-rearof the mask,-,that is, that portion which engages the facial contour ofthepatient;
  • Figure 2- is a section .taken on line 2-.2 of, Figure 1;
  • Figure 3 is a section taken .on line.3.3 of Figure .1;
  • Figure 4. is anenlargedisectional view through ,one of the windows of the mask and illustrates one form of means for removing rcondensationtfrom theinner surface of the pane;
  • Figure 5 is anenlarged view 20f a modified form of means wherein a'wiperais movably mounted in and carried bythe panemroviding a Window and wiperamit which may readily be assembled as a unitin .an apertured wall ofthemask;
  • Figure ,6 is a sectional view .takenon line 6.6.,of Figure 5;
  • Figure -,7 isra further modified form of-the window and wiper means in which the wipertis carriedby and supported in the mask wallsrand for wiping engagement with AIEQiHiEbIBpPQQQJHOlLHItidiH thetmask side walls;
  • Figure *9 is a .iiurther-modification of the invention'in which thevvisualmeans .constitutesa double walled pane having low thermalconductivity.
  • FIG. 1 illustrates one embodiment of the ,present invention
  • 1 provide a mask ,body ,formed ,preferably of electrical conductive latex or rubber or otherssuitable matcttialcomprising for wardly convegngingwal'ls which terminate iorwardlyvin .a gas inlets-nipple ,2 .whichrnay secured by suitable. means to a vhosesupplying gas to theinterior of the mask.
  • the *forrn of the vmaskperfenably.ernployed is one which is proyidedtwithsa peripheral ,cell such, as shown at r3formed,inte,gra11y withdhetmask walls l andwwhich .containsa.filler cornprising-a mass .offi ely divided'resi- .lient infiatableparticles characterized by theirability .120 move rover-one another andzto be, compressednnder a lightfor-ce of compressionas when applyingthemaskto the contour .of the patients face-this rcellzbeingvalved to the outside atmosphereby means. of -a valve 4 .so'that when the .maskis pressed against ,theiac-e of the wearer themaskwas applied.
  • the present invention provides an even greater degree of safety because it provides, in addition, a visual means by which the color of the patients lips, or his breathing activity, as well as the presence or absence of vomitus, may be observed while the mask is in place and in use, thus obviating the necessity of removing the mask to observe the patients appearance during the administration of the anesthetic or other gases.
  • the side walls of the mask are provided with openings 5 and 6 which may be circular or at least of arcuate shape.
  • the peripheral walls forming the openings are also channeled as at 7 and 8, respectively, to receive the respective transparent panes 9 and 10 and to retain them securely in the position shown and, at the same time, preventing the leakage of gases around the transparent panes or windows.
  • I provide means operable from the exterior of the mask whereby the windows or panes may be wiped clear of such condensation that forms thereon from time to time during the use of the mask, thus providing clear vision to the interior of the mask from the outside, permitting the attendant to ob serve the reaction and condition of the patient.
  • Such means includes a wiper arm 11 containing a wiper blade 12 of suitable material, such as rubber, plastic or felt material, the arm 11 terminating at one end in a hub 13 which is keyed at 14 to the shaft 15.
  • the shaft 15 extends through a bearing sleeve 18 carried in the mask body 1 and terminates outside the mask.
  • An operating knob 16 is keyed at 17 to the outer end of the shaft 15 and has bearing engagement against the bearing sleeve 18 in which the shaft 15 is mounted for oscillatory movement therein.
  • I have illustrated a modified form of the invention which may be described as comprising a window of transparent material 20 which may be secured within channels in the opening in the masks side walls in a manner similar to that shown in Figures 2, 3 and 4, that is, by the provision of a suitable channel 21 into which the window 20 may be inserted in sealing relation so as to prevent the leakage of gases from the interior of the mask when the mask is in use.
  • I provide a wiper arm 22 having a blade 23 in wiping contact with the interior surface of the window.
  • the arm 22 is carried on a shaft 24 which operates in a central opening in the window 20 and terminates on the outer side of the window in a knob 25 by which the wiper arm may be caused to rotate through a full 360, or by which the same may be merely oscillated to clear the area required for proper visual observation of the patients lips.
  • This form of the invention requires no mounting of the operating knob and shaft in the wall of the mask since the same is carried in the transparent window itself and therefore the entire unit, as a unit, may be inserted in the channeled openings of the mask.
  • the visual means consists of a double walled transparent window mounted in the mask side walls.
  • Each window comprises the spaced apart panes 40 and 41 enclosing an evacuated air space 42, and provides a visual means of sufficiently low thermal conductivity as to prevent condensation of moisture on the inner surface of the inner pane, thus insuring clear visibility through the windows at all times for the observance of conditions Within the mask during the administration of anesthesia gas.
  • the use of wipers may be eliminated.
  • the present invention affords a high degree of protection to the patient by providing a mask body of electrically conductive latex or rubber together with means for visual observation of the patients lips when the mask is in place and in use.
  • the several embodiments of the invention are of extreme simplicity in construction, effective in use and are so mounted with respect to the mask that clear vision is afforded to observe the conditions existing within the mask. In each of the constructions shown, leakage of the gases, introduced into the mask, is prevented.
  • a hollow mask body having a gas inlet at one end and open at its opposite end for sealing contact with the facial contour of the patient, said body having avisual pane for observing the condition of the patients lips when the mask is in use, and relatively movable means in contact with the inner surface of the pane for removing condensation deposited thereon, said means comprising a fixed wiper member anchored in the mask body and traversing said pane, said pane being rotatably mounted in said mask body wall.
  • a hollow mask body having a gas inlet at one end and open at its opposite end for sealing contact with the facial contour of the patient, said body having a visual pane for observing the condition of the patients lips when the mask is in use, and relatively movable means in contact with the inner surface of the pane for removing condensation deposited thereon, said means comprising a fixed wiper member anchored in the mask body and traversing said pane, said pane being rotatably mounted in said mask body wall, and means carried by the pane for relatively rotating said pane and wiper.

Description

Sept. 1, 1959 E. A. GALLEHER, JR 2,902,033 Q INHALER MASK WITH VISUAL MEANS Filed April 15, 1958 2 Sheets-Sheet 1 INVENTOR. 624/5 44. 6/111. 'l/E/Qk E. A. GALLEHER, JR 2,902,033
' INHALER MASK WITH VISUAL MEANS Sept. 1, 1959 2 Sheets-Sheet 2 Filed April 15, 1958 R. m 4m d 5 W 7 6.
United States Patent INHALER MASK wrrH VISUAL MEANS- Ellis ArGalle'her, Jr., Sarasota, Fla. Application April .15, 1195s, Serial No. 728,606
2 Claims. Cl. 128-146 This invention relates to inhaler masks andis an improvement in maskslof-the .type shownin my copending applications Serial Nos. 407,081, filed January 29., 19.54; 477,972, filed December '28, 1954, and 615,970, filed October 15., 1956.
Heretofore, .so far as .I amaware, inhaler masks employed in the administration of anesthetics, while efiective for the purpose, did not prevent observation .of :the patients condition as might be indicated by the color of the patients lips as an index to the oxygen content the blood, or by the activity in the breathing, as indicated by the degree of fogging within the mask, or even the presence of vomitus inmthe mask, without lifting orremoving the mask-from:the,fac.e. Aspiration of vomitus is one-of the lead-ingacauses of:anesthetic :ideaths. Without visual means in the mask, .dangerous conditionsmay exist which-might passunnotioed unless the-mask is lifted or removed. In .suchsevent, there-is loss of timeandgas.
One of the objectsof this invention isto provide a mask -of'the inhaler type .and preferablyiormed otelectr-ically .conduetivedatex.or rubber .and having a peripheral cell for contouring the-mask to theiacial-icontour to which ,it'is appliedand to providedntsuch a mask means .whenebythe area pf-the patienfis face coveredby the mask; use maybe. observledirorn theexter-iorof the maskithereby permitting the attendantidirect observation of-the color-,of .thepatients. lips as an-indeX: toithe oxygen content in blood, and {QnObSfiH/fi breathing conditions as wellaas the presence of ,vorn-itus. -.All.thes.e ,factors are of. prime importance :in :mainta ning .a high .degree of safety 1 in rthe administration of anesthetics.
, A -fu-rther object of the invention 1 is the provision of wisual a means in 4 the Mall-of; an inhaler type I mask which will insure a higher safety factor in the use of thevmask for the application of anesthetics.
Another :ohject of thednvention is to provide visual means in opposedwallsnf masks-hereby permitting more light to enter the mask in use. v I
A further and importantobjeet of-the-inventionis the provision of visualmeansin/a mask ,of the inhaler type ,whichgmay ,be kept free of condensation while in .nse.
The degree-rot logging of the visual means is,.,of'course, anindex to' the "degree of activity in the patients breath- Another object of the invention is a mask of the above identified type and having transparent windows in its side walls and having associated with said windows wiper means may be operated from the outside of the mask by the attendant to keep the inner surfaces of the windows clear of condensation or vapor which otherwise would collect and cloud the vision through the windows during the use of the mask in supplying anesthetics and other gases to the patient.
A further object is a mask construction possessing extremely high safety characteristics in combining Visual means for observation of the patients condition, such as breathing, oxygen content in the blood, or the presence of vomitus, together with an electrical conductive mask 2,902,033 Patented Sept. 1, 1959 2 body for grounding theypatient to the anestheticmachine to eliminate theipossibility of explosion due .to static discharges in the presence of the anesthetic gas.
Other objects and advantages of this invention Will become more apparent as'it-he-fol-lowing description of an embodiment thereof prognesseareference being made to the accompanying drawing in which like reference characters are employed to designate likeparts throughout the same.
In the drawings:
Figure 1 ,is a viewsof a mask ineorporatingmy invention as seen from the-rearof the mask,-,that is, that portion which engages the facial contour ofthepatient;
Figure 2- is a section .taken on line 2-.2 of, Figure 1;
Figure 3 is a section taken .on line.3.3 of Figure .1;
Figure 4.is anenlargedisectional view through ,one of the windows of the mask and illustrates one form of means for removing rcondensationtfrom theinner surface of the pane;
Figure 5 is anenlarged view 20f a modified form of means wherein a'wiperais movably mounted in and carried bythe panemroviding a Window and wiperamit which may readily be assembled as a unitin .an apertured wall ofthemask;
Figure ,6 .is a sectional view .takenon line 6.6.,of Figure 5;
Figure -,7 isra further modified form of-the window and wiper means in which the wipertis carriedby and supported in the mask wallsrand for wiping engagement with AIEQiHiEbIBpPQQQJHOlLHItidiH thetmask side walls;
.Figure Bis-a viewtaken ou line 8-.8 of. Figure 7; and
Figure *9, is a .iiurther-modification of the invention'in which thevvisualmeans .constitutesa double walled pane having low thermalconductivity.
Referringfirstto-Figures -1 ,through 4 which illustrate one embodiment of the ,present invention, 1 providea mask ,body ,formed ,preferably of electrical conductive latex or rubber or otherssuitable matcttialcomprising for wardly convegngingwal'ls which terminate iorwardlyvin .a gas inlets-nipple ,2 .whichrnay secured by suitable. means to a vhosesupplying gas to theinterior of the mask.
The *forrn of the vmaskperfenably.ernployed is one which is proyidedtwithsa peripheral ,cell such, as shown at r3formed,inte,gra11y withdhetmask walls l andwwhich .containsa.filler cornprising-a mass .offi ely divided'resi- .lient infiatableparticles characterized by theirability .120 move rover-one another andzto be, compressednnder a lightfor-ce of compressionas when applyingthemaskto the contour .of the patients face-this rcellzbeingvalved to the outside atmosphereby means. of -a valve 4 .so'that when the .maskis pressed against ,theiac-e of the wearer themaskwas applied.
While I am aware that precautions .arentaken-intthe administration of anesthetics to a patient wearing a mask through which the condition of the patients lips cannot be observed, the present invention provides an even greater degree of safety because it provides, in addition, a visual means by which the color of the patients lips, or his breathing activity, as well as the presence or absence of vomitus, may be observed while the mask is in place and in use, thus obviating the necessity of removing the mask to observe the patients appearance during the administration of the anesthetic or other gases.
In the form of the invention shown in Figures 1 through 4, the side walls of the mask are provided with openings 5 and 6 which may be circular or at least of arcuate shape. The peripheral walls forming the openings are also channeled as at 7 and 8, respectively, to receive the respective transparent panes 9 and 10 and to retain them securely in the position shown and, at the same time, preventing the leakage of gases around the transparent panes or windows.
As the patient breathes with the mask in place, there is the problem of accumulation of condensation of moisture upon the inner surface of the transparent panes 9 and 10. According to this form of the invention, I provide means operable from the exterior of the mask whereby the windows or panes may be wiped clear of such condensation that forms thereon from time to time during the use of the mask, thus providing clear vision to the interior of the mask from the outside, permitting the attendant to ob serve the reaction and condition of the patient. Such means includes a wiper arm 11 containing a wiper blade 12 of suitable material, such as rubber, plastic or felt material, the arm 11 terminating at one end in a hub 13 which is keyed at 14 to the shaft 15. The shaft 15 extends through a bearing sleeve 18 carried in the mask body 1 and terminates outside the mask. An operating knob 16 is keyed at 17 to the outer end of the shaft 15 and has bearing engagement against the bearing sleeve 18 in which the shaft 15 is mounted for oscillatory movement therein.
It will be seen that by oscillating the knobs 16 that the wipers 12 will be caused to traverse the inner surfaces of the transparent windows or panes 9 and 10 and wipe away any deposit of condensation which may appear during the use of the mask.
In Figures and 6, I have illustrated a modified form of the invention which may be described as comprising a window of transparent material 20 which may be secured within channels in the opening in the masks side walls in a manner similar to that shown in Figures 2, 3 and 4, that is, by the provision of a suitable channel 21 into which the window 20 may be inserted in sealing relation so as to prevent the leakage of gases from the interior of the mask when the mask is in use. In this embodiment of the invention, I provide a wiper arm 22 having a blade 23 in wiping contact with the interior surface of the window. The arm 22 is carried on a shaft 24 which operates in a central opening in the window 20 and terminates on the outer side of the window in a knob 25 by which the wiper arm may be caused to rotate through a full 360, or by which the same may be merely oscillated to clear the area required for proper visual observation of the patients lips. This form of the invention requires no mounting of the operating knob and shaft in the wall of the mask since the same is carried in the transparent window itself and therefore the entire unit, as a unit, may be inserted in the channeled openings of the mask.
In Figures 7 and 8, I have illustrated a still further modified form of the present invention in which the transparent window 30 may be rotated a full 360 by means of a window knob 31 while the Wiper 32 and its blade 33 remain stationary with respect to the mask wall. The ends of the Wiper, as at 34 and 35, are embedded in or secured to the mask wall and anchored in such position so that the wiper 33 will have wiping engagement with the inner surface of the pane 30.
In Figure 9, I have illustrated another form of the invention in which the visual means consists of a double walled transparent window mounted in the mask side walls. Each window comprises the spaced apart panes 40 and 41 enclosing an evacuated air space 42, and provides a visual means of sufficiently low thermal conductivity as to prevent condensation of moisture on the inner surface of the inner pane, thus insuring clear visibility through the windows at all times for the observance of conditions Within the mask during the administration of anesthesia gas. In the carrying out of the form of the invention, the use of wipers may be eliminated.
Thus it will be seen that the present invention affords a high degree of protection to the patient by providing a mask body of electrically conductive latex or rubber together with means for visual observation of the patients lips when the mask is in place and in use. Furthermore, it will be seen that the several embodiments of the invention are of extreme simplicity in construction, effective in use and are so mounted with respect to the mask that clear vision is afforded to observe the conditions existing within the mask. In each of the constructions shown, leakage of the gases, introduced into the mask, is prevented.
Various changes may be made in the details of construction and arrangement of parts of the invention without departing from the spirit thereof or the scope of the appended claims.
I claim:
1. In an inhaler mask, a hollow mask body having a gas inlet at one end and open at its opposite end for sealing contact with the facial contour of the patient, said body having avisual pane for observing the condition of the patients lips when the mask is in use, and relatively movable means in contact with the inner surface of the pane for removing condensation deposited thereon, said means comprising a fixed wiper member anchored in the mask body and traversing said pane, said pane being rotatably mounted in said mask body wall.
2. In an inhaler mask, a hollow mask body having a gas inlet at one end and open at its opposite end for sealing contact with the facial contour of the patient, said body having a visual pane for observing the condition of the patients lips when the mask is in use, and relatively movable means in contact with the inner surface of the pane for removing condensation deposited thereon, said means comprising a fixed wiper member anchored in the mask body and traversing said pane, said pane being rotatably mounted in said mask body wall, and means carried by the pane for relatively rotating said pane and wiper.
References Cited in the file of this patent UNITED STATES PATENTS 2,765,78& Raiche Oct. 9, 1956 FOREIGN PATENTS 305,080 Great Britain Jan. 29, 1929 866,493 France May 19, 1941
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Cited By (18)

* Cited by examiner, † Cited by third party
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US6019101A (en) * 1996-10-31 2000-02-01 Sleepnet Corporation Nasal air mask
US6631718B1 (en) 1999-06-08 2003-10-14 Sleepnet Corporation Air mask with seal
US7210481B1 (en) 1999-06-08 2007-05-01 Sleepnet Corporation Nose mask
US20080110464A1 (en) * 2005-01-12 2008-05-15 Resmed Limited Cushion for Patient Interface
US20100139662A1 (en) * 2008-12-04 2010-06-10 Hsiner Co., Ltd. Respiratory mask
US8371301B2 (en) 2000-10-19 2013-02-12 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US8402972B2 (en) 2002-01-17 2013-03-26 Resmed R&D Germany Gmbh Breathing mask arrangement and a forehead support device for same
US8479738B2 (en) 2001-10-22 2013-07-09 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US8505535B2 (en) 2003-05-02 2013-08-13 Resmed Limited Mask system
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
US20140261404A1 (en) * 2013-03-15 2014-09-18 Draeger Safety, Inc. Amplifier Mount for a Closed-Circuit Breathing Apparatus Mask
US8869797B2 (en) 2007-04-19 2014-10-28 Resmed Limited Cushion and cushion to frame assembly mechanism for patient interface
US8875710B2 (en) 2001-10-22 2014-11-04 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
US8944061B2 (en) 2005-10-14 2015-02-03 Resmed Limited Cushion to frame assembly mechanism
US9072853B2 (en) 2001-09-07 2015-07-07 Resmed Limited Forehead pad for respiratory mask
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
US11331447B2 (en) 2008-03-04 2022-05-17 ResMed Pty Ltd Mask system with snap-fit shroud

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GB305080A (en) * 1927-09-29 1929-01-29 John Ambrose Sadd Improvements in gas masks, respirators and the like
FR866493A (en) * 1941-08-18
US2765788A (en) * 1954-01-04 1956-10-09 Davol Rubber Co Surgical face mask

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FR866493A (en) * 1941-08-18
GB305080A (en) * 1927-09-29 1929-01-29 John Ambrose Sadd Improvements in gas masks, respirators and the like
US2765788A (en) * 1954-01-04 1956-10-09 Davol Rubber Co Surgical face mask

Cited By (78)

* Cited by examiner, † Cited by third party
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US6019101A (en) * 1996-10-31 2000-02-01 Sleepnet Corporation Nasal air mask
US6631718B1 (en) 1999-06-08 2003-10-14 Sleepnet Corporation Air mask with seal
US7210481B1 (en) 1999-06-08 2007-05-01 Sleepnet Corporation Nose mask
US7219669B1 (en) 1999-06-08 2007-05-22 Sleepnet Corporation Nose mask
US9662467B2 (en) 2000-10-19 2017-05-30 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US10596342B2 (en) 2000-10-19 2020-03-24 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US8746250B2 (en) 2000-10-19 2014-06-10 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US8371301B2 (en) 2000-10-19 2013-02-12 Resmed R&D Germany Gmbh Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US10195385B2 (en) 2001-09-07 2019-02-05 Resmed Limited Forehead pad for respiratory mask
US9072853B2 (en) 2001-09-07 2015-07-07 Resmed Limited Forehead pad for respiratory mask
US10245403B2 (en) 2001-10-22 2019-04-02 RedMed R&D Germany GmbH Breathing mask arrangement as well as an application device and a forehead support device for same
US9889266B2 (en) 2001-10-22 2018-02-13 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US9757534B2 (en) 2001-10-22 2017-09-12 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US10058671B2 (en) 2001-10-22 2018-08-28 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
US9144656B2 (en) 2001-10-22 2015-09-29 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US8479738B2 (en) 2001-10-22 2013-07-09 Resmed R&D Germany Gmbh Breathing mask arrangement as well as an application device and a forehead support device for same
US8875710B2 (en) 2001-10-22 2014-11-04 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
US9259549B2 (en) 2002-01-17 2016-02-16 Resmed R&D Germany Gmbh Breathing mask arrangement and a forehead support device for same
US8402972B2 (en) 2002-01-17 2013-03-26 Resmed R&D Germany Gmbh Breathing mask arrangement and a forehead support device for same
US8505535B2 (en) 2003-05-02 2013-08-13 Resmed Limited Mask system
US9895503B2 (en) 2003-05-02 2018-02-20 Resmed Limited Mask system
US8555885B2 (en) 2005-01-12 2013-10-15 Resmed Limited Cushion for patient interface
US9295800B2 (en) 2005-01-12 2016-03-29 Resmed Limited Cushion for patient interface
US8573213B2 (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
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