EP0771578B1 - Cartouche modulatrice de contre-pression pour masque respiratoire - Google Patents
Cartouche modulatrice de contre-pression pour masque respiratoire Download PDFInfo
- Publication number
- EP0771578B1 EP0771578B1 EP96402315A EP96402315A EP0771578B1 EP 0771578 B1 EP0771578 B1 EP 0771578B1 EP 96402315 A EP96402315 A EP 96402315A EP 96402315 A EP96402315 A EP 96402315A EP 0771578 B1 EP0771578 B1 EP 0771578B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- modulating
- valve member
- cartridge according
- cartridge
- guide rod
- 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.)
- Expired - Lifetime
Links
- 230000000241 respiratory effect Effects 0.000 title description 10
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 206010021143 Hypoxia Diseases 0.000 description 4
- 230000007954 hypoxia Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 208000024891 symptom Diseases 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 208000008445 altitude sickness Diseases 0.000 description 2
- 230000003042 antagnostic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007170 pathology Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 206010021133 Hypoventilation Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Images
Classifications
-
- 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
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/10—Valves
Definitions
- the present invention relates to the field of respiratory control in subjects affected or sensitive or exposed to hypoxia.
- the modulating cartridge is more particularly intended for sensitive subjects to an altitude environment and, for which it is important, if not absolutely necessary to restore or improve physical performance, to prevent the occurrence symptoms of altitude sickness such as that known as altitude sickness acute mountains, or even treat complications in first aid such as induced symptom.
- Such respiratory maneuvers can be described as “lip breathing closed”, inversion of the breathing time-expiration time ratio, or microwave ventilation.
- US Patent 4,428,392 describes a valve cartridge for a respiratory mask comprising a body adaptable to a mask.
- the body defines two rooms successive communicating by a passage, one of the rooms being in connection with the environment while the other is related to the mask.
- a valve of lower surface to the passage section allows inspiration by its mobility elastic.
- a third chamber allows expiration thanks to a movable and controlled valve elastically.
- This cartridge is however bulky due to the presence of three rooms and does not offer the possibility of flexible use.
- Patent DE 1 265 588 describes a valve for a respiratory mask containing a valve closing valve and a bellows maintained under pressure by the gas at breathe. During inspiration the valve is held in the closed position by a spring located between the valve and the bellows, thus forcing the user of the mask to breathe the gas contained in the bellows and not the ambient air. Upon expiration, a suppression is exerted on the valve thus releasing the gas exhale.
- This cartridge presents however the disadvantage of being fragile and difficult to adjust.
- the object of the invention is precisely to fill the present faceted gap multiple by offering a pressure modulating cartridge with the particularity to be easily adaptable on all respiratory masks, to be very easily adjustable, especially in exhalation back pressure without requiring long disassembly, tedious and delicate, to be light, to be easy to manufacture and maintain and to be resistant to variations in temperature and humidity, as well as aging over time, especially under the effect of ultraviolet rays.
- the modulating cartridge according to the invention is characterized in that
- Fig. 1 is a cross-sectional elevation of the modulating cartridge in accordance with the invention.
- Fig. 2 is a cross section taken along line II-II of FIG. 1.
- the modulating cartridge generally designated by the reference 1 , comprises a body 2 , preferably, but not exclusively cylindrical, made of a light material, resistant to shocks, to variations in temperature and to rays, in particular ultra -violets, so as to have a certain resistance to the aging of time.
- a material is preferably chosen from plastics and, more particularly, is made from polytetrafluoroethylene.
- the body 2 is closed at both ends by elements of transverse walls 3 and 4 which can be made of the same material and be adaptable by screwing possibly associated with seals not shown.
- the transverse wall element 3 is preferably made in the form of a solid wall cover while the transverse wall element 4 can be constituted by a simple cross, removable or not, or also by a screwable wall as illustrated in the drawings.
- the wall element has openings 5 bringing the internal volume of the body 2 into communication with a mask 6 on which the body is adapted by means of a groove 2a or the like presented by the body 2 in the vicinity of wall element 4
- the body 2 delimits internally, in particular by means of an annular rim 7 , two successive chambers 8 and 9 communicating with each other by a passage 10 , for example circular delimited by the rim 7 .
- the so-called inspiration-expiration chamber 8 is in relation to the ambient or surrounding environment by lights 11 which are preferably made in the part of the peripheral wall of the body 2 corresponding to the chamber 8 . In certain cases, provision could also be made for lights in the transverse wall element 3 .
- the so-called transfer chamber 9 is formed between the rim 7 and the wall element 4 and communicates with the chamber 8 via the passage 10 and with the mask 6 through the openings 5 .
- the wall elements 3 and 4 provide support for a guide rod 12 which passes through the passage 10 while being located, in the illustrated embodiment, concentrically with the body 2 .
- the guide rod 12 supports, in the chamber 8 , a valve 13 which, in the example illustrated, is mounted to slide freely and is elastically controlled in the closed position of the passage 10 .
- the elastic servo-constraint is provided by a helical spring 14 threaded concentrically with the rod and placed under compressive stress between the valve 13 and a stop 15 , so that the valve tends to be always applied against the rim 7 to close the passage 10 .
- the valve 13 is constituted by a disc made of a material of low density, of small thickness, threaded free to slide on the rod 12 and which may include tabs 16 extending radially to from the periphery 17 of the valve 13 .
- the actual effective diameter of the valve 13 determined by the periphery 17 , is in all cases just greater than the section of the passage 10 .
- the stop 15 adjustable axially on the rod 12 which can, for this purpose, include a threaded end portion 18 by which it can also be mounted in the transverse wall element 3 .
- the stop 15 can also be fixed on the rod 12 which can then be made axially adjustable relative to the wall element 3 by means of a suitable end portion 19 and a locking means 20 such as a counter nut screwed onto the threaded part 18 .
- the exhalation valve 13 is provided with transfer holes 21 which can be circular and evenly distributed and which, in all cases, are circumscribed by an immaterial circle C whose diameter is less than the section of the passage 10 .
- the guide rod 12 comprises, on the side of the transfer chamber 9 , a so-called inspiration valve 22 which is constituted by a disk of low density material which is mounted to slide freely on the rod 12 .
- the valve 22 has an outside diameter greater than the circle C , but less than the diameter of the passage 10 in which it can engage under the action of an elastic pre-stress member 23 acting on the valve 22 to tend to push it. still pressing against the exhalation valve 13 in a position for closing the holes 21 .
- the elastic servo-constraint exerted by the member 23 is, in all cases, less than that exerted by the member 14 .
- the member 23 is constituted by a helical spring threaded on the part of the rod 12 passing through the chamber 9 between the valve 22 and a stop advantageously constituted by the transverse wall element 4 .
- the diameter of the valve 22 in all cases greater than the diameter C , is chosen to allow to remain with respect to the passage 10 an annular gap 24 whose function appears in the following.
- valve 22 can be subjected to an adjustable elastic servo-constraint by means which can be formed by a stop mounted for example with adjustable position on the guide rod 12 provided that it does not hamper free sliding. axial useful through element 4 .
- the spring 14 applies the valve 13 against the flange 7 to close the passage 10 , the holes 21 then being closed by the valve 22 .
- valve 13 is urged to move against the action of the elastic member 14 to open the passage 10 and allow the reverse flow of the exhaled gases which escape after transfer to the medium ambient through chamber 8 and lights 11 .
- the elastic servo-constraint imposed on the valve 13 makes it possible to generate or create a back pressure on expiration which is favorable to the establishment of good ventilation and higher oxygenation rate than natural breathing.
- the adjustment of the back pressure is carried out by means of the stop 15 and allows any adaptation as a function of the selected application which may be the fight against hypoxia in the healthy subject placed in an altitude environment, improvement of oxygenation in healthy subjects at sea level, respiratory resuscitation of subjects with pathology at sea level, etc.
- the spring 23 may be provided to associate the spring 23 with means for adjusting its elastic servo-constraint which, in all cases, antagonistic to that of the spring 14 , must be located at a level lower than this.
- An application can for example be that of respiratory functional rehabilitation.
- the modulating cartridge can be produced easily by molding in a plastic material chosen for its characteristics of resistance to significant variations in temperature, to shocks, to aging.
- a cartridge can be produced in the form of a compact module which can be easily sterilized, dismantled, cleaned, reconditioned, if necessary, in particular by the dismantling of the elements of transverse walls 3 and 4 .
- the cartridge also constitutes a module having the effect, in particular when used in a low temperature environment, cause warming of the gases during the transition and transfer period and, by therefore, improve the oxygenation characteristics at the alveoli pulmonary.
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Description
Claims (12)
- Cartouche modulatrice de contre pression pour masque respiratoire du type comprenant un corps adaptable sur un masque (6) et délimitant deux chambres successives (8) et (9) communiquant par un passage (10), la première chambre (8) étant en relation avec le milieu ambiant et contenant clapet d'expiration (13) mobile, asservi élastiquement en position de fermeture du passage et présentant des trous de transfert (21), la seconde chambre (9) étant en relation avec le masque et contenant un clapet d'inspiration (22) mobile, asservi élastiquement et de surface inférieure à la section de passage, caractérisé en ce queune tige-guide (12) portée par le corps (2) traverse le passage (10) et supporte dans la première chambre (8) le clapet d'expiration (13) mobile,les trous de transfert (21) sont situés en vis-à-vis dudit passage (10),le clapet d'inspiration (22) mobile est asservi élastiquement de façon antagoniste au clapet d'expiration (13) pour occuper une position de fermeture des trous de transfert (21) dudit clapet (13).
- Cartouche modulatrice selon la revendication 1, caractérisé en ce que la contrainte d'asservissement élastique du clapet d'expiration est supérieure à celle du clapet d'inspiration.
- Cartouche modulatrice selon la revendication 1 ou 2, caractérisée en ce que la contrainte d'asservissement élastique d'au moins le clapet d'expiration est réglable.
- Cartouche modulatrice selon l'une des revendications 1 à 3, caractérisée en ce que les clapets sont montés coulissants sur la tige-guide et en ce que la contrainte d'asservissement des clapets est assurée par des ressorts hélicoídaux (14, 23) enfilés concentriquement à la tige-guide et mis sous contrainte de compression entre chaque clapet et une butée (15, 4).
- Cartouche modulatrice selon l'une des revendications 1 à 4, caractérisée en ce que la contrainte d'asservissement élastique du clapet d'expiration est réglable par déplacement de la butée (15).
- Cartouche modulatrice selon la revendication 5, caractérisée en ce que la butée (15) est réglable sur la tige-guide.
- Cartouche modulatrice selon la revendication 5, caractérisée en ce que la butée est fixe sur la tige-guide qui est réglable axialement par rapport au corps.
- Cartouche modulatrice selon la revendication 1, caractérisée en ce que la tige-guide (12) est portée par des éléments de parois transversales (3) et (4) du corps.
- Cartouche modulatrice selon la revendication 1 ou 8, caractérisée en ce que la tige-guide s'étend concentriquement au corps.
- Cartouche modulatrice selon la revendication 1, caractérisée en ce que le corps comporte un rebord interne annulaire (7) définissant le passage (10) et constituant une butée d'appui pour le clapet d'expiration (13) soumis à sa contrainte d'asservissement élastique.
- Cartouche selon la revendication 1, caractérisée en ce que la clapet (22) présente un diamètre supérieur à celui (C) dans lequel s'inscrivent les trous de transfert (21) du clapet (13).
- Cartouche selon la revendication 1 et/ou 11, caractérisée en ce que le clapet (22) présente un diamètre inférieur à celui du passage avec lequel il délimite un intervalle annulaire (24) auquel est exposé le clapet (13) à l'état fermé.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9512919 | 1995-11-02 | ||
FR9512919A FR2740691B1 (fr) | 1995-11-02 | 1995-11-02 | Cartouche modulatrice de contre pression pour masque respiratoire |
US08/854,143 US5937857A (en) | 1995-11-02 | 1997-05-09 | Backpressure-modulating cartridge for breathing mask |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0771578A1 EP0771578A1 (fr) | 1997-05-07 |
EP0771578B1 true EP0771578B1 (fr) | 2001-01-10 |
Family
ID=26232298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402315A Expired - Lifetime EP0771578B1 (fr) | 1995-11-02 | 1996-10-31 | Cartouche modulatrice de contre-pression pour masque respiratoire |
Country Status (5)
Country | Link |
---|---|
US (1) | US5937857A (fr) |
EP (1) | EP0771578B1 (fr) |
DE (1) | DE69611504T2 (fr) |
DK (1) | DK0771578T3 (fr) |
FR (1) | FR2740691B1 (fr) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19734022C2 (de) * | 1997-08-06 | 2000-06-21 | Pari Gmbh | Inhalationstherapiegerät mit einem Ventil zur Begrenzung des Inspirationsflusses |
US6193751B1 (en) * | 1998-11-02 | 2001-02-27 | Mark I. Singer | Tracheostoma valve with spring-loaded piston |
AU2001275974A1 (en) * | 2000-07-19 | 2002-01-30 | University Of Florida | Method for treating chronic obstructive pulmonary disorder |
DE10126807C2 (de) * | 2001-06-01 | 2003-12-04 | Pari Gmbh | Inhalationstherapiegerät mit einem Ventil zur Begrenzung des Inspirationsflusses |
US7909033B2 (en) | 2006-05-03 | 2011-03-22 | Comedica Incorporated | Breathing treatment apparatus |
US8051854B2 (en) | 2006-09-15 | 2011-11-08 | Comedica Incorporated | Continuous high-frequency oscillation breathing treatment apparatus |
US9050434B2 (en) | 2007-05-18 | 2015-06-09 | Comedica Incorporated | Lung therapy device |
US8251876B2 (en) | 2008-04-22 | 2012-08-28 | Hill-Rom Services, Inc. | Breathing exercise apparatus |
US9151425B2 (en) | 2009-11-02 | 2015-10-06 | Comedica Incorporated | Multiple conduit connector apparatus and method |
US9180271B2 (en) | 2012-03-05 | 2015-11-10 | Hill-Rom Services Pte. Ltd. | Respiratory therapy device having standard and oscillatory PEP with nebulizer |
US12080401B2 (en) | 2012-12-03 | 2024-09-03 | Metrohealth Ventures Llc | Combination respiratory therapy device, system and method |
US9795752B2 (en) | 2012-12-03 | 2017-10-24 | Mhs Care-Innovation, Llc | Combination respiratory therapy device, system, and method |
US9950202B2 (en) | 2013-02-01 | 2018-04-24 | 3M Innovative Properties Company | Respirator negative pressure fit check devices and methods |
US11052268B2 (en) | 2013-02-01 | 2021-07-06 | 3M Innovative Properties Company | Respirator negative pressure fit check devices and methods |
US9517367B2 (en) | 2013-02-01 | 2016-12-13 | 3M Innovative Properties Company | Respiratory mask having a clean air inlet chamber |
EP4186548A1 (fr) | 2015-04-02 | 2023-05-31 | Hill-Rom Services PTE. LTD. | Détection de fuite de masque pour un dispositif respiratoire |
FR3046937B1 (fr) | 2016-01-25 | 2019-08-09 | Universite Grenoble Alpes | Dispositif d'acclimatation a l'altitude et procede de fonctionnement de ce dispositif. |
CN108883321A (zh) | 2016-03-28 | 2018-11-23 | 3M创新有限公司 | 头戴件悬架附接元件 |
USD827810S1 (en) | 2016-03-28 | 2018-09-04 | 3M Innovative Properties Company | Hardhat suspension adapter for half facepiece respirators |
USD816209S1 (en) | 2016-03-28 | 2018-04-24 | 3M Innovative Properties Company | Respirator inlet port connection seal |
RU2711272C1 (ru) | 2016-03-28 | 2020-01-16 | 3М Инновейтив Пропертиз Компани | Многокамерный респиратор, содержащий уплотнительные устройства (варианты), и способы уплотнения |
USD842982S1 (en) | 2016-03-28 | 2019-03-12 | 3M Innovative Properties Company | Hardhat suspension adapter for half facepiece respirators |
WO2017172358A1 (fr) | 2016-03-28 | 2017-10-05 | 3M Innovative Properties Company | Dispositifs et procédés d'étanchéité pour vérification d'ajustement de respirateur |
US12070554B2 (en) | 2019-11-11 | 2024-08-27 | Hill-Rom Services Pte. Ltd. | Pneumatic connector apparatus and method |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1265588B (de) * | 1962-03-23 | 1968-04-04 | Edouard Paul Victor Raoul Gode | Ausatemventil fuer Atemschutzmasken, insbesondere von Höhenatemgeräten |
US3256898A (en) * | 1962-07-17 | 1966-06-21 | British Executive And General | Compensated expiratory valves |
US3788313A (en) * | 1966-11-29 | 1974-01-29 | L Arp | Respirator apparatus |
US4428392A (en) * | 1981-12-24 | 1984-01-31 | Protection, Inc. | Breathing valve |
US4625759A (en) * | 1982-11-19 | 1986-12-02 | Alan R. Krasberg | Gas reclaim back pressure regulator |
US5222479A (en) * | 1984-07-20 | 1993-06-29 | Auergesellschaft Gmbh | Oxygen self-rescuer apparatus |
DE3615664A1 (de) * | 1985-05-10 | 1986-11-13 | Krieger, Friedrich-Wilhelm, 8240 Berchtesgaden | Vorrichtung zur kuenstlichen beatmung ueber eine a.b.c. -schutzmaske |
GB8800846D0 (en) * | 1988-01-14 | 1988-02-17 | Changestart Ltd | Exhalation valve |
US5071453A (en) * | 1989-09-28 | 1991-12-10 | Litton Systems, Inc. | Oxygen concentrator with pressure booster and oxygen concentration monitoring |
US5165398A (en) * | 1989-12-08 | 1992-11-24 | Bird F M | Ventilator and oscillator for use therewith and method |
US5385141A (en) * | 1992-04-16 | 1995-01-31 | Siebe North, Inc. | Speech diaphragm and exhalation valve |
DE4237294C1 (de) * | 1992-11-05 | 1993-11-25 | Draegerwerk Ag | Atemschutzmaske mit Überdruck im Maskeninnenraum |
US5813401A (en) * | 1996-10-15 | 1998-09-29 | Radcliff; Janet H. | Nebulizer automatic control valve |
US5845637A (en) * | 1997-01-09 | 1998-12-08 | Tech-One, Inc. | Surface breathing device |
-
1995
- 1995-11-02 FR FR9512919A patent/FR2740691B1/fr not_active Expired - Fee Related
-
1996
- 1996-10-31 DK DK96402315T patent/DK0771578T3/da active
- 1996-10-31 DE DE69611504T patent/DE69611504T2/de not_active Expired - Fee Related
- 1996-10-31 EP EP96402315A patent/EP0771578B1/fr not_active Expired - Lifetime
-
1997
- 1997-05-09 US US08/854,143 patent/US5937857A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5937857A (en) | 1999-08-17 |
DK0771578T3 (da) | 2001-04-30 |
FR2740691B1 (fr) | 1998-01-09 |
DE69611504D1 (de) | 2001-02-15 |
FR2740691A1 (fr) | 1997-05-09 |
DE69611504T2 (de) | 2001-05-10 |
EP0771578A1 (fr) | 1997-05-07 |
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