DE3707952A1 - Breathing mask for long-term operation - Google Patents

Breathing mask for long-term operation

Info

Publication number
DE3707952A1
DE3707952A1 DE19873707952 DE3707952A DE3707952A1 DE 3707952 A1 DE3707952 A1 DE 3707952A1 DE 19873707952 DE19873707952 DE 19873707952 DE 3707952 A DE3707952 A DE 3707952A DE 3707952 A1 DE3707952 A1 DE 3707952A1
Authority
DE
Germany
Prior art keywords
mask
bead
ventilation
respiratory mask
air
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.)
Withdrawn
Application number
DE19873707952
Other languages
German (de)
Inventor
Ernst Dipl Ing Hoermann
Original Assignee
Ernst Dipl Ing Hoermann
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 Ernst Dipl Ing Hoermann filed Critical Ernst Dipl Ing Hoermann
Priority to DE19873707952 priority Critical patent/DE3707952A1/en
Publication of DE3707952A1 publication Critical patent/DE3707952A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61M16/04Tracheal tubes
    • A61M16/0434Cuffs
    • A61M16/045Cuffs with cuffs partially or completely inflated by the respiratory gas
    • A61M16/0452Cuffs with cuffs partially or completely inflated by the respiratory gas following the inspiration and expiration 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
    • A61M16/04Tracheal tubes
    • A61M16/0488Mouthpieces; Means for guiding, securing or introducing the tubes
    • A61M16/049Mouthpieces
    • A61M16/0493Mouthpieces with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block
    • 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
    • A61M16/0633Means for improving the adaptation of the mask to the patient with forehead support
    • 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
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/105Filters
    • A61M16/106Filters in a path

Abstract

The invention relates to a breathing mask for long-term positive pressure respiration of patients with pulmonary insufficiency. The breathing mask surrounds mouth and nose. In long-term respiration (about 8 hours a day) sealing of the breathing mask against the face presents problems: the mask must only rest against the face very lightly in order to avoid painful pressure sores; on the other hand, however, it may only have low losses due to leakage. This sealing problem is solved by an inflatable annular bead which is formed such that the particularly sensitive areas of the face, that is bridge of the nose and eyes, are left free. Sealing and tolerability of the breathing mask can be improved by controlling the internal pressure in the sealing bead, so that the air pressure in the bead is slightly higher on inspiration than the air pressure in the mask, while it is lower on expiration, by a special cross-sectional shape of the bead with sealing lips and by application of an intermediate layer of a skin-compatible material.

Description

The invention relates to a tight-fitting Facial mask used for long-term positive pressure ventilation People with lung insufficiency is used.

The respiratory mask ( 1 ) encloses the mouth and nose. The breathing air is supplied to the mask from a compressed air generator ( 2 ) ("respirator") through hose lines and a three-way switch valve ( 3 ) ("respirator valve"). As a result, an excess pressure is built up in the interior of the mask, which is sufficiently high to fill the lungs with breathing air without the user having to do anything.

When exhaling, the used air is blown out through the ventilation valve ( Fig. 1, Fig. 2).

With long-term ventilation, the mask increases daily worn as 8 hours.

In this operation, the ventilation is sealed problematic face mask:

  • - on the one hand, the mask may only fit very lightly, around pressure points and damage to the epidermis avoid.
  • - On the other hand, it may only have a small leakage have cracks.

To date, comparable ventilation masks are only for Short-term ventilation is known, e.g. B. for emergency ventilation of Accident victims.

These ventilation masks are sealed off from the face e.g. T. by an inflatable, closed ring bead, the amount of air in the bead during ventilation remains constant (eg "pocket mask" from Lärdal Medical D 8031 Graefelfing, parts catalog, edition Jan. 86).

In some cases, sealing is also carried out using sealing lips, that press against the face under the internal pressure (For example "Lärdal Medical" silicone mask, see above).

These ventilation masks are for long-term ventilation not suitable:

  • - either the sealing element runs transversely over the bridge of the nose and leads there because of the locally increased pressure load, especially at Patients with a "high" bridge of the nose, too Skin irritation with painful pressure points;
  • - or the respiratory mask is in the nose and eye - Area so ready that the eyeball is stressed and / or the visual field is restricted.

In addition, there are seals on this ventilation mask elements made of air and water impermeable material and lie directly on the skin of the face.

As a result, the skin moisture cannot in this area evaporate. Because wet skin is much more sensitive against permanent stresses, the risk of Damage to the epidermis increased.

The invention has set itself the task of ventilation to create a mask that has sufficient tightness and no physical activity even with continued continuous operation Leads to impairments of the user.

The sealing problem described is solved according to the invention by an inflatable annular bead ( 4 ) made of airtight, elastic material with a shape according to claim 1. The bridge of the nose and the eyeballs are kept free ( Fig. 3, Fig. 4, Fig. 5).

The seal on the nose is only in the upper half of the nose sidewalls, including on the cheek next to the Nostrils.

A concave curvature of the sealing bead, with a Radius of curvature less than 1 cm, as is otherwise the case when the sealing bead runs over the bridge of the nose and there leads to high local pressures avoided this kind.

In addition, a sufficient field of vision for the User guaranteed.

By requesting a sealing lip ( 8 ) according to claim 2, the additional sealing effect of a self-applying sealing lip under the internal pressure can serve to improve the seal ( FIG. 6).

The cross-sectional profile of the annular bead can be shaped according to claim 3 ( Fig. 7).

If the ring bead is now filled with air, the ring bead will increasingly take on a circular cross section. The sealing lip is turned further and further away from the mask body in the direction of the face surface. The edge of the sealing tip moves around the loading "H" ( Fig. 8).

This effect favors a good adaptation of the Ventilation mask also on very different faces to form.

By controlling the internal pressure in the toroid speaking claim 4, the pressure load that the Ring bead on the face, on the necessary Minimum be reduced. In addition there is when exhaling a strong reduction of the contact pressure, what a recovery process in the affected skin can favor lots, e.g. B. by a better one Blood flow during the relief phase.  

The control of the internal pressure in the ring bead can be done by an arrangement according to claim 5 ( Fig. 10). This arrangement has the advantage that the amount of pressure difference between the pressure in the bead and the pressure in the mask is adjustable to a certain extent. A disadvantage is that the additional throttle point ( 10 ) in the supply air line requires a higher performance from the breathing apparatus.

In an arrangement according to claim 6, the ventilator is not additionally claimed ( Fig. 11). This is particularly important for battery operation. There is no setting option for this.

By a skin-friendly liner (11) according to claim 7, the formation of a moisture film between facial skin and breathing mask is avoided (FIG. 5 and FIG. 12).

The job of the liner is to remove the one Absorb skin moisture and by capillary action to be transported to the outside or inside of the mask, where it can evaporate.

This will dry the skin in the affected area held, which increases their resilience. In addition, such an intermediate layer is inexpensive producible and easy to attach, e.g. B. by Buttons. So it can be replaced frequently, which is especially hygienic for continuous operation Reasons is recommended.

In a design of the sealing element accordingly claim 8, the ring bead and possibly its pressure control can be omitted, which simplifies the respiratory mask ( Fig. 9).

The membrane ( 13 ) can be fastened by means of a wire tension ring ( 17 ). This requires that a groove is provided on the outer edge of the mask, into which the wire tension ring is inserted, and that in addition the outer contour of the mask is convex in each area, so that the wire tension ring rests at every point.

By attaching the ventilation valve ( 3 ) directly to the ventilation mask according to claim 9 ( Fig. 12), two advantages are achieved:

  • 1. By the elimination of a connecting piece between ventilation valve and respiratory mask, the is longer than 2 cm, the dead volume in the mask decreased. (Under "dead volume" is the volume to understand the amount of used air that remains in the mask after exhaling.) This improves the ventilation quality of the mask improved.  
  • 2. When executing the respiratory mask speaking claim 7, the flow resistance the ventilation valve for the printer be raised in the ring bead without that an additional hose line is required is.

By fixing the breathing mask on the user's teeth with the help of a fitting ( 15 ) according to claim 10 ( Fig. 13), slipping of the respiratory mask, z. B. prevented by head movements and ensures a constant fit of the mask. This improves the sealing of the ventilation mask.

Claims (10)

1. Ventilation mask ( 1 ) for positive pressure ventilation, which encloses the mouth and nose, wherein when inhaling the air from a compressed air generator ( 2 ) (hereinafter referred to as "ventilator") through hose lines and a three-way switch valve ( 3 ) (hereinafter "Ventilation valve" called) is supplied to the respiratory mask, so that there is an excess pressure in the interior of the respiratory mask, which is sufficiently high to fill the lungs with breathing air without the user's intervention, while the exhaled air is blown out through the breathing valve during exhalation , characterized in that
  • - The total width of the respiratory mask (dimension "B" in Fig. 1) at the height of the connecting line between the user's pupils - proper fit of the mask exposed before - is not more than 5 cm;
  • - The ventilation mask is sealed to the face of the user by an air-filled ring bead ( 4 ) made of elastic, airtight material, the mask and bead being shaped so that the ring bead on the nose in the area of the frontal processes of the jawbone ( 5 ) - this corresponds approximately the upper half of the side walls of the nose - abuts, and that the center lines ( 6 ) of the left and right strands of the contact surface on the forehead unite above the root of the nose. The contact surface here is to be understood as the band-shaped surface ( 7 ) on which the sealing bead touches the face.
2. Respiratory mask according to claim 1, characterized in that an elastic sealing lip ( 8 ) is formed on the side facing the face of the air-filled annular bead, which lip faces the inside of the respiratory mask.
3. Respiratory mask according to claim 2, characterized in that the cross-sectional profile of the air-filled ring bead is formed so that the side wall ( 9 ) of the hollow body, which faces inwards and merges into the top of the sealing lip, approximately the shape of an "S" Has.
4. Respiratory mask according to claim 1, 2 or 3, the internal pressure in the ring bead being controlled that when breathing in the air pressure in the bead something is higher than the air pressure in the interior of the Breathing mask, but when exhaling the pressure in the bead is reduced.  
5. Respiratory mask according to claim 4, characterized in that for the generation of the excess pressure in the annular bead, the flow resistance of an adjustable or non-adjustable throttle device ( 10 ) - preferably a two-way valve - which is attached in the supply air line between the breathing apparatus and the breathing valve, the Ring bead is pneumatically connected to the part of the supply air line, which - seen in the flow direction - is in front of the throttle device.
6. Respiratory mask according to claim 4, characterized in that for the generation of the Overpressure in the annular bead is the flow resistance a line fitting in the supply air line, which for ventilation is required anyway, e.g. B. an air filter or the ventilation valve is, the ring bead pneumatically with the part of the supply air duct that is connected - seen in the direction of flow - in front of this line armature lies.
7. Respiratory mask according to one of the claims, characterized in that an intermediate layer ( 11 ) made of skin-friendly, soft, absorbent material, preferably textile, leather or cellulose, is attached between the sealing bead and the face.
8. Respiratory mask according to the preamble of claim 1, characterized in that it consists of a rigid mask body ( 12 ) on which a slack membrane ( 13 ) is attached airtight, which has a cut out for the mouth and nose and from breathable, absorbent, skin-friendly material, preferably thin leather. The membrane attaches to the face under the internal pressure of the ventilation mask. The membrane can be preformed to ensure a wrinkle-free fit. The contact pressure on the face, and thus the sealing function of the membrane, can be increased by an intermediate cushion ( 14 ) made of elastic, compressible material that is attached between the mask body and membrane in the interior of the mask.
9. Respiratory mask according to one of the claims, characterized in that the breathing valve is attached to the respiratory mask, or an integral part of the respiratory mask is that a connecting line between the Interior of the breathing valve and the interior ventilator line either not available or, if this connection line exists, it has a length of no more than 2 cm.  
10. Ventilation mask according to one of the claims, characterized in that the ventilation mask is fixed on the face of the user by means of a molded piece ( 15 ) which is inserted in front of, behind and / or between the teeth of the user, so that it is from Teeth of the user is held in a form-fitting manner, and is firmly or releasably connected to the mask. The ventilation mask can be connected to the shaped piece by one or more connecting parts ( 16 ), which can be flattened in the area of the lips. The forces generated by the internal pressure of the respiratory mask can also be absorbed by one or more headbands.
DE19873707952 1987-03-12 1987-03-12 Breathing mask for long-term operation Withdrawn DE3707952A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873707952 DE3707952A1 (en) 1987-03-12 1987-03-12 Breathing mask for long-term operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873707952 DE3707952A1 (en) 1987-03-12 1987-03-12 Breathing mask for long-term operation

Publications (1)

Publication Number Publication Date
DE3707952A1 true DE3707952A1 (en) 1988-09-22

Family

ID=6322859

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873707952 Withdrawn DE3707952A1 (en) 1987-03-12 1987-03-12 Breathing mask for long-term operation

Country Status (1)

Country Link
DE (1) DE3707952A1 (en)

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012051A1 (en) * 1990-02-16 1991-08-22 Hök Instrument Ab Acoustic respiration detector
EP0462701A1 (en) * 1990-05-21 1991-12-27 The University Of Sydney Nasal mask
DE4212259C1 (en) * 1992-04-11 1993-01-14 Gottlieb Weinmann Geraete Fuer Medizin Und Arbeitsschutz Gmbh + Co, 2000 Hamburg, De Respiration mask for patient's resuscitation - has contour with resilient filling of liq. or pasty, hardenable plastics, fitting patient's face
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
WO1995033418A1 (en) * 1994-06-03 1995-12-14 Thornton W Keith Combination of face mask and dental device
EP0692274A3 (en) * 1994-07-15 1996-03-13 Weinmann G Geraete Med Individual mask
WO1996028207A1 (en) * 1995-03-16 1996-09-19 Assistance Publique - Hopitaux De Paris Facial respirator mask, part and method for the manufacture thereof
US5560354A (en) * 1993-06-18 1996-10-01 Rescare Limited Facial masks for assisted respiration or CPAP
DE19515739A1 (en) * 1995-05-03 1996-11-07 Holger Krohn Method and device for generating health-friendly breathing air in nasal positive pressure respirators
WO1997033641A1 (en) * 1996-03-14 1997-09-18 Beth Israel Deaconess Medical Center, Inc. A gas-sensing mask
US5829441A (en) * 1997-06-24 1998-11-03 Nellcor Puritan Bennett Customizable dental device for snoring and sleep apnea treatment
US5921239A (en) * 1997-01-07 1999-07-13 Sunrise Medical Hhg Inc. Face mask for patient breathing
US5954048A (en) 1994-06-03 1999-09-21 Thornton; W. Keith Device and method for improving breathing
DE19757703C1 (en) * 1997-12-23 1999-10-14 Map Gmbh Breathing mask with hose and enriched-air outlet
US5983892A (en) 1994-06-03 1999-11-16 Thornton; W. Keith Device for improving breathing
DE19818497C1 (en) * 1998-04-24 2000-02-24 Dirk Schulte Medical anaesthetic feed mask has recess in edge of mask to receive sealing insert with incompressible infill
US6039044A (en) * 1994-12-09 2000-03-21 University Of Sydney Gas delivery mask
US6155262A (en) 1994-03-25 2000-12-05 Thornton; W. Keith Method and apparatus for adjusting a dental device
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.
US6247926B1 (en) 2000-01-17 2001-06-19 W. Keith Thornton Oral appliance having a bonding layer and methods for fitting and relining same
EP1116492A2 (en) * 2000-01-11 2001-07-18 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Respiratory mask and method for producing the same
FR2804330A1 (en) * 2000-02-01 2001-08-03 Georges Boussignac Respiratory assistance apparatus
US6305376B1 (en) 1999-09-09 2001-10-23 W. Keith Thornton Device and method for improving breathing
DE19817332C2 (en) * 1997-04-29 2002-11-14 Georg Haushalter oxygen mask
EP1099452A3 (en) * 1999-11-12 2003-01-22 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Respiratory mask and method for making the same
US6516805B1 (en) 1993-09-29 2003-02-11 W. Keith Thornton Apparatus for prevention of snoring and improved breathing during sleep
US6530373B1 (en) 2000-08-04 2003-03-11 Mallinckrodt Inc. Respirator mask
US6571798B1 (en) 2000-04-05 2003-06-03 W. Keith Thornton Device for improving breathing and method of constructing same
US6675802B1 (en) 2001-05-08 2004-01-13 W. Keith Thornton Device for improving breathing incorporating a detachable venting seal
FR2859383A1 (en) * 2003-09-09 2005-03-11 Taema Harness and mask assembly for treating sleep apnoea has inflatable elements on both mask surround and harness straps that fit over head
WO2006050559A1 (en) * 2004-11-10 2006-05-18 Resmed Limited Method and apparatus for adjusting respiratory mask sealing force
US7156093B2 (en) 2003-09-18 2007-01-02 E. D. Bullard Company Inflatable respirator hood
US7174895B2 (en) 2002-05-01 2007-02-13 W. Keith Thornton Device and method for improving a user's breathing
US7255106B2 (en) 2001-06-01 2007-08-14 Pari Gmbh Spezialisten Fur Effektive Inhalation Inhalation mask
US7328705B2 (en) 2003-03-10 2008-02-12 Mark Abramson Dental appliance for improving airflow through nasal-pharyngeal airway
US7909035B2 (en) 2005-07-11 2011-03-22 Airway Technologies, Llc Multi-chamber mask and method of forming the same
EP2308537A1 (en) * 2002-06-14 2011-04-13 MAP Medizin-Technologie GmbH Mask cushioning for a respiratory mask
US7963284B2 (en) 2002-10-24 2011-06-21 Airway Technologies, Llc Custom fitted mask and method of forming same
US7992558B2 (en) 2006-09-11 2011-08-09 Airway Technologies Llc Stability medical mask
US8020276B2 (en) 2006-11-30 2011-09-20 Airway Technologies, Llc System and method for custom-orienting a medical mask to an oral appliance
US8028698B2 (en) 2006-09-18 2011-10-04 Invacare Corporation Breathing mask
EP2347784A3 (en) * 2000-10-19 2012-07-18 MAP Medizin-Technologie GmbH Breathing mask for supplying breathing gas to a mask user
US8316858B2 (en) 2006-04-06 2012-11-27 Airway Technologies, Llc System for coupling an oral appliance to a medical mask
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
US8607796B2 (en) 2009-02-27 2013-12-17 Airway Technologies, Llc Apparatus and method for coupling an oral appliance to a gas delivery device
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
US10596027B2 (en) 2011-04-05 2020-03-24 Airway Technologies, Llc Apparatus for improved breathing

Cited By (108)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195528A (en) * 1990-02-16 1993-03-23 Hok Instrument Ab Acoustic respiration detector
WO1991012051A1 (en) * 1990-02-16 1991-08-22 Hök Instrument Ab Acoustic respiration detector
EP0462701A1 (en) * 1990-05-21 1991-12-27 The University Of Sydney Nasal mask
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
DE4212259C1 (en) * 1992-04-11 1993-01-14 Gottlieb Weinmann Geraete Fuer Medizin Und Arbeitsschutz Gmbh + Co, 2000 Hamburg, De Respiration mask for patient's resuscitation - has contour with resilient filling of liq. or pasty, hardenable plastics, fitting patient's face
US5560354A (en) * 1993-06-18 1996-10-01 Rescare Limited Facial masks for assisted respiration or CPAP
US6516805B1 (en) 1993-09-29 2003-02-11 W. Keith Thornton Apparatus for prevention of snoring and improved breathing during sleep
US6155262A (en) 1994-03-25 2000-12-05 Thornton; W. Keith Method and apparatus for adjusting a dental device
AU692564B2 (en) * 1994-06-03 1998-06-11 W. Keith Thornton Combination of face mask and dental device
US6209542B1 (en) 1994-06-03 2001-04-03 W. Keith Thornton Combination face mask and dental device for improved breathing during sleep
US5537994A (en) * 1994-06-03 1996-07-23 Thornton; W. Keith Combination face mask and dental device for improved breathing during sleep
US5983892A (en) 1994-06-03 1999-11-16 Thornton; W. Keith Device for improving breathing
US5954048A (en) 1994-06-03 1999-09-21 Thornton; W. Keith Device and method for improving breathing
WO1995033418A1 (en) * 1994-06-03 1995-12-14 Thornton W Keith Combination of face mask and dental device
US5755219A (en) 1994-06-03 1998-05-26 Thornton; W. Keith Device for improving breathing
US6374824B1 (en) 1994-06-03 2002-04-23 W. Keith Thornton Device for improving breathing
EP0692274A3 (en) * 1994-07-15 1996-03-13 Weinmann G Geraete Med Individual mask
US6039044A (en) * 1994-12-09 2000-03-21 University Of Sydney Gas delivery mask
WO1996028207A1 (en) * 1995-03-16 1996-09-19 Assistance Publique - Hopitaux De Paris Facial respirator mask, part and method for the manufacture thereof
FR2731624A1 (en) * 1995-03-16 1996-09-20 Assist Publ Hopitaux De Paris Face ventilation mask, part and method for the production thereof
DE19515739A1 (en) * 1995-05-03 1996-11-07 Holger Krohn Method and device for generating health-friendly breathing air in nasal positive pressure respirators
WO1997033641A1 (en) * 1996-03-14 1997-09-18 Beth Israel Deaconess Medical Center, Inc. A gas-sensing mask
US5857460A (en) * 1996-03-14 1999-01-12 Beth Israel Deaconess Medical Center, Inc. Gas-sensing mask
US5921239A (en) * 1997-01-07 1999-07-13 Sunrise Medical Hhg Inc. Face mask for patient breathing
DE19817332C2 (en) * 1997-04-29 2002-11-14 Georg Haushalter oxygen mask
US5829441A (en) * 1997-06-24 1998-11-03 Nellcor Puritan Bennett Customizable dental device for snoring and sleep apnea treatment
DE19757703C1 (en) * 1997-12-23 1999-10-14 Map Gmbh Breathing mask with hose and enriched-air outlet
DE19757703C5 (en) * 1997-12-23 2009-09-17 Map Medizin-Technologie Gmbh breathing device
DE19818497C1 (en) * 1998-04-24 2000-02-24 Dirk Schulte Medical anaesthetic feed mask has recess in edge of mask to receive sealing insert with incompressible infill
US6305376B1 (en) 1999-09-09 2001-10-23 W. Keith Thornton Device and method for improving breathing
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.
EP2269679A3 (en) * 1999-11-12 2013-06-12 ResMed R&D Germany GmbH Respiratory mask and method for making the same
EP2269677A3 (en) * 1999-11-12 2013-06-12 ResMed R&D Germany GmbH Respiratory mask and method for making the same
EP1099452A3 (en) * 1999-11-12 2003-01-22 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Respiratory mask and method for making the same
EP2269678A3 (en) * 1999-11-12 2013-06-12 ResMed R&D Germany GmbH Respiratory mask and method for making the same
EP1116492A3 (en) * 2000-01-11 2003-12-03 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Respiratory mask and method for producing the same
EP1116492A2 (en) * 2000-01-11 2001-07-18 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Respiratory mask and method for producing the same
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