WO1994002190A1 - Process and system of controllable breathing air supply or evacuation - Google Patents

Process and system of controllable breathing air supply or evacuation Download PDF

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Publication number
WO1994002190A1
WO1994002190A1 PCT/EP1993/001940 EP9301940W WO9402190A1 WO 1994002190 A1 WO1994002190 A1 WO 1994002190A1 EP 9301940 W EP9301940 W EP 9301940W WO 9402190 A1 WO9402190 A1 WO 9402190A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
characterized
mask body
system
preceding
Prior art date
Application number
PCT/EP1993/001940
Other languages
German (de)
French (fr)
Inventor
Johannes Geisen
Bernhard Geisen
Original Assignee
Johannes Geisen
Bernhard Geisen
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
Priority to DEG9209893.2U priority Critical
Priority to DE9209893U priority patent/DE9209893U1/en
Priority to DE4307754A priority patent/DE4307754A1/en
Priority to DEP4307754.4 priority
Application filed by Johannes Geisen, Bernhard Geisen filed Critical Johannes Geisen
Publication of WO1994002190A1 publication Critical patent/WO1994002190A1/en

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
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/105Filters
    • A61M16/106Filters in a path
    • A61M16/1065Filters in a path in the expiratory path
    • 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
    • A61M16/0051Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • 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
    • A61M16/0057Pumps therefor
    • A61M16/0066Blowers or centrifugal pumps
    • A61M16/0069Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • 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
    • A61M16/021Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022Control means therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06Respiratory or anaesthetic masks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06Respiratory or anaesthetic masks
    • A61M16/0683Holding devices therefor
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing 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
    • 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
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0036Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase

Abstract

A process and a system are disclosed for controllable supplying or evacuating breathing air. The system has a mask (10) and a device (11, 12) for holding the mask before the mouth and/or nose area of the user. The edge of the mask is spaced apart from the mouth and/or nose area of the user, at least in partial zones. An air duct (14) for the controlled supply of surrounding air or for sucking off breathing air opens into the mask.

Description

System and method for controlled feeding or

Removing breathing air

The invention relates to a system for the controlled feeding or removal of respiratory air, comprising a mask body and a device for retaining the mask body at the mouth and / or nose region of a user, a method for the controlled .and supplying or removing breathing air.

To protect the environment from contaminated breathing air or a person in front of polluted outdoor air different types of respirators are used. A simple and inexpensive type of conventional masks, for example, for holding of bacteria and germs in * an operating room, however, are used in a similar way, as a dust protective mask, comprises a single- or multi-layer nonwoven fabric with tapes before the nose and mouth region of a user is on hold.

Such a mask is usually intended for a single use. Your filter effect is limited because the fleece blocked by the moisture of breath and penetrate so contaminated air over the edge of the mat laterally or to escape. Studies have shown that the filter effect of such a breathing mask is worn by the contamination of the mask itself as well as by the moisture absorbed after about 20 minutes. Other disadvantages of such a respirator lie in their lack of comfort, the relatively high breathing resistance, a certain visual disability, the potential fogging of lenses, an unpleasantly hot and humid skin contact and the like. In some cases it can also lead to allergic skin reactions against the nonwoven material. Finally, the relatively costly production of such disposable is asken, particularly for surgical use which are beyond difficult recyclable, in proportion to their short life.

Another type of breathing masks for protection against kontami¬ ned outside air, for example as gas masks, have a sealingly abutting against the mouth and nose of a wearer mask body made of rubber or plastic, as well as a usually followed directly to the mask body filtration system, the filtered air into the mask interior gets involved. Such breathing masks are relatively heavy normally and cause by the absolute exclusion of air and strong breathing resistance of the filter system often Beklem ungszustände the wearer.

The invention is therefore based on the object to provide a system and method for controllably supplying or removing breathing air, which is useful as a breathing mask which avoids the aforementioned disadvantages and in particular an optimum decontamination of the respiratory air at a high wearing comfort without obstructing the respiratory activity permits or the view. The system should preferably have a low weight and be individually adaptable to a user. Moreover, a system should be provided which is easy to clean, reusable and recyclable. This object is inventively achieved by a system for the controlled supplying or removing breathing air with the features of claim 1. Further, a method for the controlled feeding and controlled discharge of breathing air comprising the features of claim 33 and 34, are provided according to the invention.

The inventive system can dissipate loaded for example with germs and bacteria breathing air filter and when required in an operating room, a clean room or the like, a completely sterile atmosphere. Conversely, the system may, however, also be used as "smog" mask, as respirator allergen or Astmatiker etc. by controlling purified air is supplied, said air supplied when required for inhalation substances can be added more corresponding suitable as special medications.

The inventive system provides a comfortable fit, the mask body is only partially or completely without skin contact in front of the nose and / or mouth of the user. Due to the design of the mask body, the respiratory activity and the steady feeding or suction of air, a pressure or Sogbarriere forms the periphery of the mask body, which prevents the uncontrolled entry or escape of contaminated air, while maintaining the natural breathing activity of the wearer does not or almost not affected.

Investigations by the applicant to the respiratory activity of adults who were considered in the development of the new system are explained below.

The respiration rate of an average adult is under normal conditions on the average at 14 breaths per minute, with an air volume of 7 1 / min is breathed. The following comparative figures have been determined:

Tidal volume while walking 14 1 / min tidal volume during cycling 40 1 / min

Tidal volume during rowing 150 1 / min

The tidal volume, for example, an operating surgeon, concentrated and standing, it should be added at 12 1 / min, short-term peak values ​​of up to 80 1 / min (cough) were determined. Based on the duration of one hour produces a surgical staff between 0.5 - 2.5 m 3 / h bacterially contaminated breathing air, which must be filtered.

In order to investigate conventional masks and to visualize the course of Atemstrδmen, the method of Schliereninterferometrie was used. In this measurement method, density differences may be visualized in a fluid (eg., Air or water) by the behavior of a light ray is examined along a test medium. Starting from the fact that the ausgeatmetete air has a different density from the ambient air, the flow pattern of the Experationsluft can be detected optically at this density measurement method. It can be assumed that the Inspirationsluf has a corresponding Strδmungsverlauf.

Fig. 1 shows the profiling of a subject. The direction of the turbulent currents breath is the need for a mouthguard for example, during surgery. Fig. L also shows that the breath current assumes a very specific Strδmungsverlauf, and that a device for controlled supply of outside air or discharge of breathable air has to channel the air flow in a suitable manner. This is achieved by the inventive arrangement of the mask body and the regulated supply of external air or discharge of breathing air.

Preferred embodiments of the invention are given in the subclaims. The invention is explained in more detail below with reference to various embodiments with reference to the drawings. Show it:

Fig. 1 is the profile view of a test person to illustrate the breath flow path,

Fig. 2 is a side view of a person wearing the system of the invention for adding or removing breathing air,

Fig. 3 is a perspective view of the system of FIG. 2 with an air volume control device,

Fig. 4 is an exploded view of the air quantity control device of FIG. 3,

Fig. 5 shows an alternative embodiment of the mask body according to the invention,

Fig. 6 shows another embodiment of the mask body according to the invention,

Fig. 7 shows a fourth embodiment of the mask body according to the invention, Fig. 8 shows a further modified embodiment of the mask body according to the invention,

Fig. 9 shows a sixth embodiment of the mask body according to the invention.

Fig. 10 is a schematic representation of a

Flow body which is provided in the mask body of Fig. 9, and

Fig. 11a, 11b are schematic illustrations of an air conduit with non-return flap valves.

Fig. 1 shows the course of flow of the exhaled air of a test person. For the intended application areas for the supplying or discharging of breathing air, namely as a surgical mask as Smogmaske, as respirator for allergic or asthmatic, as a protective mask for keeping clean rooms, for a metered medication of inhaled substances, as a labor protection mask or a portable system for determining the tidal volume of a carrier, it is sufficient to capture the exhaled air in the Einein Strδmungsverlauf shown breath corresponding area and in a certain surrounding this area uncertainty zone or feed air inspiration this area.

In the other figures show the various embodiments, corresponding components of the inventive system with the same reference numerals.

Fig. Shows a mask body 10 which is arranged in front of the mouth and nose of a user. In about the middle of the mask body 10 in a mouth portion 10a opens a rigid air pipe 13 which is led out of the mask body and out the side of the head of a user along and connected to a holding device. The holding device comprises a length-adjustable upper head bracket 11 and a rear head strap 12, which are each placed around the head of a user around and eknδpfe on both sides of the head, approximately to the height of the temples by two actuators and Hal 15 is connected and supported to each other pivotable are. The air tube 13 is guided by the rotatable actuating and holding button 15 therethrough and has at its outer circumferential ribs 13a, is locked by a set position of the air tube in the positioning and stop button 15th The length of the upper, transversely extending across the head of a user Kopfbügeis 11 is also adjustable and lockable, so that a stable support with more point contact is formed at the head of the user of the mask body 10 at an appropriate setting of the headband and the air tube, so that the mask body 10 is located at a fixed distance without contact with the skin in front of the mouth and nose of the user. On the inside of the pull and holding buttons 15 pillow can be additionally provided. The area from the mouth 10a of the mask body. distal end of the air tube 13 is connected via a plug connection 17 with an air hose 14 for supplying or Abfüren of breathing air.

Fig. 3 shows a perspective view of the system of Fig. 2, wherein the air hose 14 is connected to an air flow control device 16. The system shown in Fig. 3 is used for the controlled suction of exhaled air and is for example used in an operating room or a clean room. The air flow is indicated by arrows, the white arrows A in accordance with the mask over the edge into the interior of the mask body 10 of fresh air flowing, and black arrows B in accordance with the contaminated and discharged exhaled. The mask body 10 is so formed that it substantially fully absorbs the exiting air flow from mouth and nose B. The air quantity control apparatus 16, which is described in more detail below, draws the Exprirationsluftstro from continuously, and by the suction effect in the air line 13, 14 and in the mask interior, especially in the mouth portion 10a, a continuous flow of fresh air from the environment via the mask edge in the interior of the mask results, which provides the carrier with fresh air and at the same time forms a Sogbarriere which prevents the leakage of, for example, bacterially contaminated exhaled through the mask edge to the outside. Thus, a full-surface application of the mask body to the skin is redundant, and yet the environment is effectively protected against contaminated breathing air.

In predominantly sidestream systems, a collecting channel for possibly exiting with the saliva or exhaled condensate can at the bottom of the mask body 10 may be provided to this optionally forwarded to a collecting container (not shown). There, the liquid can be collected and deposited. Moreover, the constant suction or supply air flow promotes the drying of the mask range.

The discharged exhaled air B passes through the air volume control means 15 therethrough, in which a filter is provided for cleaning or decontaminating the air, and is discharged as purified air C to the environment. The system described can also be used in reverse for the controlled supplying breathing air.

Fig. 4 shows the air amount control device 16 having a controllable air pump 17 and an air filter 18 in exploded view. The air quantity control means 16 comprises a housing 19 having two chambers for the air pump 17 and the air filter 18 and a housing cover 20. At the bottom of the housing 19, a retainer clip 21 is provided for the air quantity control means 16, for example to a garment, a belt etc. to attach. The air quantity control apparatus further includes a connection for a power supply 22, wherein in addition to the batteries 22 shown in place of, or a network connection can be provided. Furthermore, an LCD display 23 for various operating conditions, a power switch 24 and a control LED 25 are provided.

In FIG. 4, not shown, a control electronics, which may also be housed in the air quantity control means 16.

The air pump 17 is a variable fan with a capacity of up to 9 m 3 / h. As an air filter, a replaceable filter cartridge is provided from a glass fiber fabric, the filtration efficiency is 99.9%. a service life of at least 325 hours, whereby it can absorb 100% humidity. This filter material is particularly advantageous because it can be disinfected and reusable. Alternatively, however, an air filter 18 may be provided aμs a nonwoven material. The housing cover 20 is a terminal 20a for the air line 14 and openings 20b for entering or exiting air. The housing 19 and the housing cover 20 are preferably made of glass fiber reinforced Valox or Valox (polybutylene terephthalate), the printed circuit board of the control electronics of Ultem.

The course of an air stream of a eductive system through the air quantity control apparatus as indicated in Fig. 4 with arrows.

FIGS. 5 and 6 show two alternative embodiments of the mask body 10 for a system for the controlled discharge of breathing air.

The mask body 10 of FIG. 5 has lateral air ducts 26 in which the mask body edge has a larger distance to the face surface of a user, so that air guide channels preferably by these flows 26 Luf. At the upper edge of the mask body 10, a ridge 27 is provided, by which the mask body is resting on the bridge of the nose of a user, said ridge facilitates on the one hand the correct positioning of the mask body 10 in front of the mouth and nose area, on the other hand, for protecting the eyes against possibly upwards is used from the mask interior flowing drafts. The mask body of FIG. 5 thus has regions with direct skin contact, portions with a small, defined distance from the skin surface, and areas with a larger distance to the Hau surface at its periphery. Characterized by the formed according to aerodynamic and ergonomic aspects shape of the mask body as well as by the suction effect of the connected to the air pipe 13 air quantity control means for causing a constant Frischluftsog A over the edge of the mask into the mask interior, and so on the one hand supports the supply of fresh air, on the other hand, a fresh air builds -Sogbarriere, is ensuring that no exhaled air exits through the mask edge from the mask interior.

Fig. 6 shows a greatly reduced mask body 10 which is ergonomically adapted to the facial shape of a user. Mouth and nose of the wearer, where the distance of the mask edge to the surface of the skin is covered the mask body relatively low; which is adhered to the defined distance between the skin surface and the mask edge through defined contact points 10b, 10c in the area of ​​the nose and the chin is ensured. The mouth portion 10a of the air tube 13 is located relatively close to mouth and nose of the wearer, so that the exhaled air is reliably sucked. In this case, the already explained Sogbarriere arises at the edge of the mask body 10, on the one hand follow suit fresh air from the outside, on the other hand prevents contaminated exhaled air is discharged to the outside in an uncontrolled manner.

FIGS. 7 to 9 show further embodiments of the mask body 10 of the inventive system for supplying respiratory air.

These systems with relatively open mask bodies can, for example, as Smogmasken, respirators for allergic or asthmatic or the like. They offer maximum comfort while maintaining a relatively good protection against contaminated outside air, which is perfectly adequate for use in the non-toxic range.

The mask body 10 of FIG. 7 has at its upper edge to a flange 27 with which it rests on the nose of a Benuters. The mask body 10 itself approximately corresponds to an enlarged reproduction of the nose, and is open toward the bottom, wherein the air tube 13 in the corresponding one of the nose portion of the mask body opens. The lower edge of the mask body 10 is slightly curved inwards so that the inflowing through the air pipe 13 fresh air is guided to the mouth and nostrils. In this case, an air flow cone is produced, is taken from the breathing air of substantially covering the entire nose and mouth area, and prevents contaminated outside air. Since the mask body 10 physically covers only the nose, the user of such a system can easily, without a greater breathing resistance exhale through the mouth.

In FIG. 8, a system similar to that of Fig. 7 is shown in which the mask body 10 is supported by a web 17 on the bridge of the nose of a wearer of the system. The mask body 10 corresponds in this case a laterally open, up to about the chin extending from the nose plate, which directs the air in the opening region 10a slightly below the mouth of a user exiting obliquely upward to the mouth and nose. Even with this mask body 10 is formed by the special air guiding a substantially closed air cushion cone of air supplied to the mouth and nose area, so that only negligible no or small amounts of contaminated outside air can get into the respiratory tract. On the other hand, the natural breathing is not impeded by the relatively large breathing resistance of a closed or almost closed mask here. In particular, in a sudden change of the respiratory activity, such as coughing or sneezing, the air ejected in the systems of Fig. Can yield 7 or 8 smoothly downward without impairing the function of the overall system. A constant stream of air supplied through the air line 14, 13 provides an ever present for an air cushion that is built up again immediately after expiration and prevents the uncontrolled entry of outside air into the respiratory tract.

Fig. 9 shows a further reduction in variation of the system according to the invention. The mask body 10 consists essentially of only one extended, aligned to the mouth and nose of a user outflow opening 10a of the air tube 13. In this case, as shown in FIG. 10, a central Strömungskδrper 28 may be provided in the mouth portion 10a which divides the air flow supplied , so that a type of air-clad or clean air curtain is formed around the mouth and nose area, the outside air prevents effective.

Fig. 11a and 11b show a particularly favorable Ausführunsform of the air tube 13 in the vicinity of the mouth portion 10a of the mask body 10 of a system for removal of respiratory air. In the wall of the air pipe 13, one or more non-return valves 29 are used, which are hinged to the mouth of the air pipe 13 and open in the downstream direction to the inside. In normal operation, the check valves are opened 29 (Fig. 11b), so that air both flow from the mask body 10 through the mouth portion 10a and through shared by the check valves 29 orifices 30 in the air pipe 13 into the air pipe 13 and the air quantity control device 16 can be extracted. With increasing passing through the mouth portion 10a of the air flow, the check valves 29 close depending on the pressure acting on them pressure partially or totally the openings 30, as shown in Fig. 11a, and the abgeförderte Luftrstrom corresponds substantially completely the exhaled air. This inventive design of the air discharging air pipe 13, the air volume control device 16 may operate substantially constant power, yet always conveying away the entire amount of the ejected exhaled air, even in a sudden increase in the exhaled air volume, for example, by coughing or sneezing.

Other possibilities to a suddenly rising air volume and abzufordern are also conceivable. By a suitable design of the air duct and / or of the mask body, z. For example, by working or resulting Aussackungen and / or folds in the Masken¬ mask or outlet region, a sudden increase in the volume of exhaled air can be trapped. As with the embodiment of FIG. 11, the maximum required suction or feeding rate of the air quantity control device can be constantly kept, with only a portion of the available suction or Zuführvolumens is actually used in normal operation, the rest of the volume of air is similar to 11 drawn in Fig. "empty" or dissipated. With a gain of the respiratory activity and a consequent increase in ejected or inhaled Lutvolumens an actuating device, a diaphragm or a flap valve system by an electronic control and / or the changed air pressure itself may be activated continuously, so that the previously "idle" volume of air to the mask body is supplied to or exhausted from this.

In the mouth region 10a of the mask body 10 or in the air line sensors for determining the tidal volume on the basis of pressure differences, differences in temperature or differences in density and the like may be provided. A mechanical determination of tidal volume with a spirometer or an acoustic detection of changes in respiratory activity can be used in the inventive system. The corresponding sensor signals are passed to a control electronics, which both may control the operation of appropriate valves, diaphragm or flap systems as well as the performance of the air quantity control device 16 can change depending on the volume to be conveyed air.

The following, not all illustrated in the drawings functions and features may be realized individually or in any combination in the inventive system.

Instead of the air tube 13, a flexible hose can be led out from the mouth area of ​​the mask body, then a correspondingly different holding means must be provided for the mask body. The connected to the air line air quantity control device may be attached to the body of the user, for example on the back or on a belt preferably, but it can also be removed by the user, in a stationary condition, be located in another room etc.. For relatively non-critical applications at a suitable shaping of the mask body, the air quantity control device may also be completely absent, wherein the air line would have to be then led into a fresh air environment, and wherein it must be ensured by shaping the mask body, that solely by the respiratory activity of the carrier of the invention system, a suction or pressure barrier forming the mask edge, which prevents the uncontrolled entry or escape of air we breathe.

The air quantity control apparatus regulates the suction or feeding preferably in dependence on the actual breath stream, Stδrereignisse, such as coughing, sneezing or coughing, can be compensated either by changing the pump power or by the above-described valve systems and air reserve areas in the mask body and the air line. Furthermore, the control device provides controls for the power supply and the filter unit. Security measures such as doubling the critical components of the control device and warning devices that indicate failure or malfunction of one or more components can also be integrated in the control device. Further may be provided, which condition the supplied breathing air as required for certain applications in accordance with a heating device, a drying device or a moistening device. The supplied air can also take drugs or other substances are added in addition, which are suitable for inhalation at a corresponding embodiment of the system.

The fan of the air pump 17, the air volume control device 16 can either be permanently in operation so that a continuing slight underpressure or overpressure in the mask body 10 prevails and a constant pressure or Sogbarriere is maintained at the edge of the mask body, or it may depend on the operated respiratory activity of the user. A manual activation or control of the air quantity control device and the air spare areas on a corresponding switch is in the range of the invention.

The mask body can have either a standardized shape which is matched to the facial contours of an average adult, or it may be designed for one specific user, then the mold, scanning, or scanning the head shape of the particular user a basis for the formation of the forming mask body. The mask body and the air tube are preferably made of sterilizable plastic, such as PEI (polyetherimide), for the air hose and appropriate seals silicone or PVC may be used. All parts of the system of the invention can be separated completely from each other reusable and / or recyclable.

The features disclosed in the foregoing description, in the drawing and in the claims the invention may be material for realizing the invention in its various embodiments both individually and in any combination.

Claims

System for the controlled supplying or discharging vonAtemluftAnsprüche
1. System for the controlled .Zuführen or removal of respiratory air, comprising a mask body (10) and a Haltevor¬ device (11, 12) for supporting the mask body in front of the mouth and / or nose region of a user, characterized denotes ge that the edge of the mask body (10) zumin¬ least in partial areas a distance from the mouth and / or nose of the user, and in that a Luftlei¬ device (13, 14) for the controlled supply of outside air or suction of breathing air in the mask body (10).
2. System according to claim 1, characterized by an above-the-air line (13, 14) to the mask body (10) connectedness which air quantity control apparatus (16) for controlling the flow rate of the air flow through the air line and to form and maintain a fresh air pers -Druck- Sogbarriere or at the edge of Maskenkör¬.
3. System according to claim 1 or 2, characterized by a filter device in the air duct for cleaning the supplied outside air or the discharged air we breathe.
4. System according to claim 3, characterized in that the filter device is integrated into the air quantity control apparatus (16).
5. System according to any one of the preceding claims, characterized in that the holding device adjustable, which can be placed in multi-point contact with the user's head strap
(11, 12) and the mask body (10) so stops at the mouth and nose area of ​​the user, that at least a part of the mask body having a small, defined distance from the face surface of the user.
6. System according to one of claims 3 to 5, characterized in that the air quantity control apparatus (16) has a controllable air pump (18) for conveying a stream Luft¬ variable size.
7. System according to one of claims 3 to 6, characterized in that the filter device comprises a filter cartridge auswechsel¬ face of a glass fiber tissue.
8. System according to any one of the preceding claims, characterized in that the holding device (11, 12) to support brackets (11, 12) slidably and pivotally gelager¬ tes air pipe (13), on the one hand in the mask body (10) opens and the holding mask body adjustable in position, and the other hand is connected via a Luft¬ hose (14) with the air quantity control apparatus (16).
9. System according to any one of the preceding claims, characterized in that in the mask body (10) one or more air spare areas are provided to quickly adjust depending on the barometric pressure changes in the mask body to be supplied to or discharged air flow.
10. System according to claim 9, characterized in that the air spare areas as a pressure-dependent target gene Verformun¬ of the mask body (10) are formed.
11. System according to any one of the preceding claims, characterized in that the mask body (10) Luftleitvorrich¬ obligations which the clean exhaled breath air or inhaled fresh air substantially uniformly over the periphery of the mask body (10) outwards or direct inward so that a pressure or a barrier Sog¬ forms, the air the occurrence of contaminated Außen¬ in the mask body or the leakage of contaminated breathing air is largely prevented from the mask body.
12. The system is characterized according to any one of the preceding claims, gekenn¬ by a gutter in the lower region of the mask body (10) for the collection of saliva leaking and condensation.
13. System according to any one of the preceding claims, characterized in that the mask body (10) acting as an air barrier on a user's face which can be placed on the web upper edge abhäl an air flow from the eye area.
14. System for the controlled supply of breathing air to one of the preceding claims, characterized in that in the mouth region (10a) of the air line (13) kenkörper in Mas¬ (10), a central Strömungskδrper (28) is angeord¬ net, which produces an air flow shell which prevents ver¬ that impure outside air into the mask body occurs ein¬.
15. System for the controlled supply of breathing air to one of the preceding claims, characterized by a mixing device which is added to the air stream to be supplied to selected substances.
16. System according to any one of the preceding claims, characterized by a sensor device ge in Munich of application of the air line (13) in the mask body (10) for detecting the current tidal volume.
17. System according to claim 16, characterized in that the sensor device detects a change in respiratory volume due to a pressure change, a temperature change, a change in the air flow rate or der¬ same.
18. The system of claim 16 or 17, characterized gekenn¬ characterized in that the air quantity control apparatus (16) comprises an electronic control and is adjustable depending on a detected actual tidal volume.
19. System according to any one of the preceding claims, gekenn¬ characterized by a carrying device for the air volume control device (16) be¬ a user's back is festigbar.
20. System according to any one of the preceding claims, characterized in that the holding device and the Luftmen¬ are gen-control device integrated in a helmet.
21. The system is characterized according to any one of the preceding claims, gekenn¬ by a warning system for indicating a failure or malfunction of individual components of the system.
22. System according to any one of the preceding claims 8 to 21, characterized by means for manually activating the air spare areas.
23. A system for controlled feeding of breathing air according to one of the preceding claims, characterized by a moistening device for moistening the zuzufüh¬ leaders breathing air.
24. A system for controlled feeding of breathing air according to one of the preceding claims, characterized by a heater for heating the air to be supplied Atem¬.
25. System according to any one of the preceding claims, characterized in that the mask body (10) and the device Halte¬ be¬ stand (11, 12) essentially consists of polyetherimide.
26. System according to any one of the preceding claims, characterized in that the air duct (13, 14) made of silicone or PVC.
27. System according to any one of the preceding claims, characterized in that all components of the system are vollstän¬ dig separable from each other.
28. The system is characterized according to any one of the preceding claims, gekenn¬ by a predictor means for predicting sudden changes in the respiratory activity of the Benut¬ dec, such as coughing or sneezing, th due to Erfahrungswer-.
29. System according to any one of the preceding claims, characterized in that the mask body (10) of the head shape is adaptable a particular user. $
30. The system features according to any of the preceding CLAIMS THAT ge by an intercom system in or on the Mas¬ kenkörper (10).
31. A system for controlled removal of respiratory air to one of the preceding claims, characterized in that in the opening area of ​​the air conduit (13) outside of the mask body (10) one or more non-return valves in the wall of the air line (13) are provided, which open in normal operation and are close with an increase of the discharged air volume.
32. A system for controlled removal of respiratory air to one of the preceding claims, characterized in that in the wall of the mask body (10) one or more non-return valves are provided, which are open during normal operation and close with an increase of the discharged air volume.
33. A method for kontollierten supplying respiratory air, characterized in that in the mouth and nose area ei¬ ner person controlling an air pressure zone is established, is supplied into the fresh air and which forms a pressure barrier against uncontrolled ingress of outside air.
34. A method for kontollierten removal of respiratory air, characterized in that in the mouth and nose area ei¬ ner person controlling a negative air pressure zone is established, is sucked in the exhaled air, and forms a Sogbarriere against uncontrolled exiting exhaled air.
PCT/EP1993/001940 1992-07-23 1993-07-22 Process and system of controllable breathing air supply or evacuation WO1994002190A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEG9209893.2U 1992-07-23
DE9209893U DE9209893U1 (en) 1992-07-23 1992-07-23 System for the decontamination of respiratory or outside air
DE4307754A DE4307754A1 (en) 1992-07-23 1993-03-11 System and method for the controlled supply or removal of breathing air
DEP4307754.4 1993-03-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU47012/93A AU4701293A (en) 1992-07-23 1993-07-22 Process and system of controllable breathing air supply or evacuation

Publications (1)

Publication Number Publication Date
WO1994002190A1 true WO1994002190A1 (en) 1994-02-03

Family

ID=25923865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/001940 WO1994002190A1 (en) 1992-07-23 1993-07-22 Process and system of controllable breathing air supply or evacuation

Country Status (3)

Country Link
AU (1) AU4701293A (en)
DE (1) DE4307754A1 (en)
WO (1) WO1994002190A1 (en)

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US5694927A (en) * 1995-11-08 1997-12-09 Bohmfalk; George L. Disposable mask and suction catheter
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US6668830B1 (en) * 1999-11-19 2003-12-30 Mallinckrodt Inc. Low noise exhalation port for a respiratory mask
FR2861311A1 (en) * 2003-10-23 2005-04-29 Equip Medicaux Et Moyens Avece Respirator mask support has base, side plates and straps to hold mask shells in position
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US8960196B2 (en) 2007-01-30 2015-02-24 Resmed Limited Mask system with interchangeable headgear connectors
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US9027556B2 (en) 2008-03-04 2015-05-12 Resmed Limited Mask system
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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
WO2015168077A1 (en) * 2014-04-28 2015-11-05 Scott Technologies, Inc. Filtering face respirator having optimized facial filter location
US9220861B2 (en) 1998-01-16 2015-12-29 Resmed Limited Forehead support for facial mask
US9248251B2 (en) 2003-04-10 2016-02-02 Resmed Limited Mask with integral cushion and forehead piece
US9375545B2 (en) 2004-06-16 2016-06-28 Resmed Limited Respiratory mask assembly
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
US9421339B2 (en) 1996-07-26 2016-08-23 Resmed Limited Patient interface
US9592359B2 (en) 1999-06-18 2017-03-14 Resmed Limited Forehead support for facial 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
US9802021B2 (en) 2002-12-06 2017-10-31 Fisher & Paykel Healthcare Limited Mouthpiece
US9895503B2 (en) 2003-05-02 2018-02-20 Resmed Limited Mask system
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WO1996006651A1 (en) * 1994-09-01 1996-03-07 Mark Nepon Ventilation of medical gases
WO1997011625A1 (en) * 1995-09-28 1997-04-03 Nigel Graeme Chesney Armstrong A support means with provision for fluid delivery
US5694927A (en) * 1995-11-08 1997-12-09 Bohmfalk; George L. Disposable mask and suction catheter
EP0806215A2 (en) * 1996-04-17 1997-11-12 The BOC Group plc Apparatus for recovering an anaesthetic agent
EP0806215A3 (en) * 1996-04-17 1998-07-01 The BOC Group plc Apparatus for recovering an anaesthetic agent
US9421339B2 (en) 1996-07-26 2016-08-23 Resmed Limited Patient interface
US8997739B2 (en) 1996-10-16 2015-04-07 Resmed Limited Vent valve apparatus
US9770571B2 (en) 1996-10-16 2017-09-26 Resmed Limited Vent valve assembly
WO1998024499A1 (en) * 1996-12-02 1998-06-11 Resmed Limited A mask and harness assembly
AU731244B2 (en) * 1996-12-02 2001-03-29 Resmed Limited A mask and harness assembly
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US8833371B2 (en) 1997-02-10 2014-09-16 Resmed Limited Mask and vent assembly therefor
USD807497S1 (en) 1998-01-16 2018-01-09 Resmed Limited Pad for forehead support
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US9220861B2 (en) 1998-01-16 2015-12-29 Resmed Limited Forehead support for facial mask
US9592359B2 (en) 1999-06-18 2017-03-14 Resmed Limited Forehead support for facial mask
US6668830B1 (en) * 1999-11-19 2003-12-30 Mallinckrodt Inc. Low noise exhalation port for a respiratory mask
WO2001051113A1 (en) * 2000-01-11 2001-07-19 Hudson Rci Ab Oxygen 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
US9072853B2 (en) 2001-09-07 2015-07-07 Resmed Limited Forehead pad for respiratory mask
US10195385B2 (en) 2001-09-07 2019-02-05 Resmed Limited Forehead pad for respiratory mask
US10058671B2 (en) 2001-10-22 2018-08-28 Resmed R&D Germany Gmbh Application device for a breathing mask arrangement
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
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
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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
US9802021B2 (en) 2002-12-06 2017-10-31 Fisher & Paykel Healthcare Limited Mouthpiece
US9956369B2 (en) 2002-12-06 2018-05-01 Fisher & Paykel Healthcare Limited Mouthpiece
US9248251B2 (en) 2003-04-10 2016-02-02 Resmed Limited Mask with integral cushion and forehead piece
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WO2005039680A1 (en) * 2003-10-23 2005-05-06 Equipements Medicaux Et Moyens Avances-E.2.M.A (Sa) Holding device for a respiratory mask
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WO2005097018A1 (en) 2004-03-09 2005-10-20 Philippe Perez Small respiratory device for distributing pressurised air to a respiratory tract
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Also Published As

Publication number Publication date
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DE4307754A1 (en) 1994-04-07

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