DE202007018186U1 - Self-contained bag ventilation device with adapter for air supply - Google Patents

Abstract

adapter to connect of respiratory filter or pulmonary air breathing apparatus, characterized a multipart adapter is attached to the bag of a bag ventilator will allow him to connect various respirators.

Description

1 starting point of development

In many situations of rescue and work, accidents may result in the loss of breathing of the injured. Respirator carriers are severely injured in the danger zone, trapped, their respiratory protective equipment suffer defects or fail, respirator wearers are killed. In Germany, Europe and America alone, a total of 638 ASGTs have hit the fire department, including 128 deadly ASGTs. According to Table 1, these figures have tended to rise since 2000. And thereby accidents with respirator wearers from applications outside the fire department, z. As in industrial respiratory protection, not even included in these statistics. Table 1: Accidents with respirator wearers (ASGT) of the fire brigade year Area injured ASGT dead ASGT 2000 Germany 4 - Europe 6 - America 2 - 2001 Germany 7 1 Europe 6 - America 30 2 2002 Germany 23 - Europe 32 6 America 34 13 2003 Germany 25 2 Europe 35 7 America 14 6 2004 Germany 26 - Europe 48 9 America 29 2 2005 Germany 29 3 Europe 28 9 America 79 12 year Area injured ASGT dead ASGT 2006 Germany 38 2 Europe 36 4 America 29 11 2007 (July) Germany 9 - Europe 33 11 America 81 28 Total since 2000 638 128

Analyzes show that in dangerous situations a quick recovery of the breathing air supply drastically reduces the loss of people. All these many studies show that the oxygen reserve in humans is used up after about 3 minutes. To avoid further damage the air supply should be used at the latest. Ventilation in the danger area may therefore be required, for. B. in long escape routes or trapped. The usually rescuing first responders are currently facing the unsolvable problem of performing ventilation in the danger area without endangering themselves. Currently, there are neither technical equipment nor tactical solutions, the first responders a ensure safe ventilation in areas with flue gas or with radioactive, biological or chemical aerosols. They always endanger themselves or those to be rescued.

In Germany move the firefighters per year about 6,000 stakes with dangerous ABC substances. On average, about 250 of them need injured to be resuscitated.

250 Once wounded and first aiders were required ventilation endangered. This number and the ventilation requirements for accidents in the respiratory protection of the fire department underline the requirement for a ventilation option, the independent of the air works and is applicable by first responders.

During my professional activities came to a state fire brigade school and as a part-time expert for personal protective equipment I am in the investigation of these facts to the knowledge that an effective and independent ventilation by first responders do not have to exclude. If It succeeds, so the respiration bag proven in the resuscitation modify it so that breathable air can be supplied to it, he lets himself also by first aiders in the danger area apply.

2. Basic idea of my development

My Development assumes that ventilation with bag ventilators at Resuscitation of people with respiratory failure easy and very effective is. First responders can apply them without additional training. Allow bag ventilation devices the breath donor with 21 vol .-% oxygen in the ventilation air through trained in resuscitation first responders, z. B. all drivers and the first responders of the fire department.

My Development allows the currently not possible Safe use of bag ventilation devices in the hazardous area. That can be achieved when the bag ventilators with a Connection to the protected and needs-based supply breathable air from a respiratory air reservoir. Then leave it become one for First aiders and injured persons secure ventilation even in the danger zone to use.

When Respiratory air reservoir becomes a SCBA in this development in basic equipment with the supplement for one Rescue connection used. These devices can be equipped so that They in the medium pressure line to the regulator an additional connector have installed. In this connector you put a standard System from separate medium pressure line and rescue full face mask. This can be Breathing air for respiratory protection and medical respiratory support to give to the rescue. These additional equipment for SCBA use today already many fire departments.

Around but also breath over to be able to give this system must be for a safe and effective ventilation necessary resuscitator bag adaptable be. Therefore I have one in my development instead of the rescue full face mask Modified respiratory bag to the separate medium pressure line appropriate. So the ventilation with the clean air from the Breathing air supply of the SCBA is possible even in the danger area.

• • Pressluftatmer Normaldruck, Anschlussstück mit Rundgewinde 40 × 1/7 Zoll
• • Pressluftatmer Überdruck, Anschlussstück mit metrischem Gewinde M 45 × 3
• • Pressluftatmer Überdruck, Anschlussstück mit herstellerspezifischem Steckanschluss
• • Pressluftatmer Überdruck, Anschlussstück mit Einheits-Steckanschluss

My development allows the connection of all commercially available SCBA on the modified my respiratory bag. Depending on the breathing apparatus connection piece on the resuscitator bag, the following SCBA can then be used:

• • Compressed air breathing apparatus normal pressure, connection piece with round thread 40 × 1/7 inch
• • SCBA overpressure, metric threaded connector M 45 × 3
• • SCBA overpressure, connector with manufacturer-specific plug connection
• • SCBA overpressure, connector with unit plug connection

3. Effectiveness of my development

3.1 basic statement

My development consists of an adapter to a respiratory bag, which allows the connection of the breathing apparatus of a SCBA. Depending on whether it is a compressed air breathing apparatus normal pressure or a compressed air pressure overpressure, the required adapter can be exchanged before connecting the respective lung regulator. This development can be used for all three bag sizes commonly used today (1: to 10 kg / l year, 2: to 30 kg / 9 years, 3: for adults). The bag ventilator to whose Be attached to the breathing bag, has a disposable or non-rebreathing valve in the area of the mouth-nose mask. Thus, the inhaled air can indeed be pressed into the injured, but his exhaled air does not flow back into the bag. On the opposite side of the breathing bag is the adapter I developed. At this, the breathing apparatus of the rescue accessory of the SCBA is connected to the bag of the bag ventilator. Here, the bag ventilator has an air inlet valve. On the one hand, this check valve enables the subsequent delivery of respiratory air from the breathing apparatus of the rescue accessory of the SCBA, but on the other hand it prevents a backflow from the bag of the bag ventilation device into the regulator during the respiration. In addition, it ensures sufficiently fast the refilling of the bag of the bag ventilator with breathing air from the regulator of the rescue equipment of the SCBA.

The respective air pressures in the bag ventilator ensure the operation of the breathing bag in self-contained mode. This includes the overpressure the breathing air when squeezing the resuscitator, the provides the injured with breathing air. Negative pressure arises in the resuscitator, if then the compressed resuscitator due to the design independently unfolded. This negative pressure can be exploited for opening the regulator of the Rescue Accessory of the SCBA and the subsequent inflow of Air from the SCBA. This is how the ventilation bag is made swift with Fill breathing air from the regulator of the rescue equipment of the SCBA. To the pressure equalization is filled with the resuscitator bag and represents the next respiration procedure to disposal.

3.2 Operation of the breathing bag in the self-contained mode

• - Preparation, inter alia .: • Head of overreaching to the respirator and proper pressing the mouth and nose mask in the mouth and nose area of the respirator, • Connecting the regulator of the rescue accessory of the SCBA to the resuscitator of the respiratory bag device;
• - ventilation: • Squeezing the Resuscitator, • the Air inlet valve connected to the regulator of the breathing apparatus of the SCBA The ventilation bag prevents the ingress of ventilation air into the screwed-on regulator of the rescue equipment, • Ventilation air flows through the non-rebreathing valve into the respiratory tract of the respirator, • arises in the respiratory bag low vacuum up to -10 mbar;
• - exhalation of breathing and filling of the breathing bag • the Exhaled air to the ventilator spontaneously flows out of the chest back to the non-rebreathing valve of Bag ventilator. The non-rebreathing valve includes the way to the resuscitation bag. The exhaled air flows at the non-rebreathing valve in the environment; • of the Regulator of rescue equipment of the SCBA is due to the negative pressure in the resuscitator (up to 10 mbar) depending on the manufacturer at about - 7 mbar and provides sufficient brisk breathing air to; • of the Resuscitator is supplied with breathing air from the regulator of the rescue equipment of the SCBA filled and stands next Ventilation ready.

The reusable resuscitator can be disassembled for cleaning and disinfect. The valves are disassembled and according to the hygiene plan in disinfectant solution inserted. The resuscitator is subjected to wiping disinfection. For this purpose, recommended by the manufacturer disinfectants in specified Concentration, temperature and exposure time used. After disinfection All parts are thoroughly rinsed, dried, assembled and according to manufacturer's specifications on function checked.

4 Proof of the effectiveness of my invention

Around To check the effectiveness of my development, I conducted a trial of operability on a converted Bag ventilators by. Therefore I built the air inlet valve of the ventilation bag of a commercial Bag ventilator for adults so around that it also acts as an adapter for connecting the regulator a compressed air pressure normal pressure is available. I did that for the trial the adapter with an internal round thread 40 × 1/7 inches. Anyone can do that Regulator can be screwed normal pressure.

The Try without back pressure, d. H. without connection to a ventilation phantom revealed that up to 45 compressions per minute are possible. Experiments using a ventilation phantom enabled still 40 compressions per minute. This frequency becomes common considered sufficient for resuscitation.

The Adapter for using positive pressure breathing apparatus could screw easily into the connector and gas-tight and firmly tense. The achieved compression values were similar those of normal pressure.

My Invention is effective.

5. Invention quality

To the State of the art belong today only bag ventilators to the respiratory accident without self-breathing in areas without respiratory toxins, flue gas and ABC substances. There is their capacity proven. With my invention, the bag ventilator can now be equipped so that it is independent of the air becomes operable. It can be used in respiratory areas for ventilation use without breathing apparatus carrier or First responders in addition to endanger. As a basic device let the SCBA be used. He is the standard device in the respiratory protection the fire department and on all emergency vehicles available. Many companies also use SCBA as the basis for the respiratory protection of their employees.

Also the easy change of adapters for the optional use of overpressure or normal pressure SCBA is so possible.

With So my invention I bring the prior art in the area of self-contained ventilation Ahead.

additions

For bag ventilators have I invented an adaptation that was the prerequisite for breathing with filtered air and for self-contained Beatmen creates. Thus it can also be ventilated in areas that are contaminated with ABC substances, the u with flue gases. a. interspersed and where low-oxygen atmospheres predominate.

The constructive design of the adapter allows easy gas-tight Attachment and subsequent Use of filters and overpressure or normal pressure regulator of the SCBA.

• Zu 1 Adapter an einem Beutelbeatmungsgerät zum Schaffen einer Voraussetzung für das Beatmen mit gefilterter Luft und für umluftunabhängiges Beatmen, um auch in Bereichen beatmen zu können, die mit ABC-Stoffen kontaminiert sind, die mit Rauchgasen u. ä. durchsetzt sind und in denen sauerstoffarme Atmosphären vorherrschen, dadurch gekennzeichnet, dass ein mehrteiliger Adapter den Anschluss von Atemschutzgeräten am Beatmungsbeutel ermöglicht.
• zu 2.1: Auf diesem Anschlussstutzen wird der Beatmungsbeutel gasdicht befestigt
• zu 2.2: Auf der aus dem Beatmungsbeutel zeigenden Seite als Anschlussstutzen mit dem Anschlussgewinde 40 × 1/7 Zoll dient zum Anschrauben eines Atemfilter oder eines Lungenautomaten eines Pressluftatmer Normaldruck nach DIN EN 137 Atemschutzgeräte – Behältergeräte mit Druckluft (Pressluftatmer) mit Vollmaske – Anforderungen, Prüfung, Kennzeichnung
• Zu 2.3 Das im Inneren des Adapter eingeschraubte Rückhalteventil schließt durch den Überdruck, der beim Zusammendrücken des Beatmungsbeutels entsteht. So verhindert es das ungewollte Ausströmen der Beatmungsluft während des Beatmunungsvorganges zurück.
• zu 3 Das Rückhalteventil besteht aus einer Gummimembran und ist so auf einem Ventilteller gelagert, dass es Atemluft aus dem Adapter einströmen lässt aber diese Richtung beim Beatmen gasdicht versperrt.
• Zu 4 Dieser Teil des Adapters wird bei Nutzung von Lungenautomaten von Pressluftatmern Überdruck nach DIN EN 137 mit M 45 × 3 – Gewinde benötigt und dafür per Hand auf das unter 2.2 beschriebene Teil des Adapters aufgeschraubt.
• Zu 5 Dieser Teil des Adapters wird bei Nutzung von Lungenautomaten von Pressluftatmern Überdruck nach DIN EN 137 mit Einheitssteckanschluss nach DIN 85 600 benötigt und dafür per Hand auf das unter 2.2 beschriebene Teil des Adapters aufgeschraubt.

My protection claims consist in an adapter for a bag ventilator, which I have attached to the bag of the bag ventilator. This makes it possible to connect breathing apparatus to the bag ventilator. Depending on the choice of connectivity is thus through filter purified breath or breathing air from the breathing air supply of a SCBA to ventilate the injured party ready. To explain the constructive features, add:

• To 1 adapter on a bag ventilator to provide a condition for ventilated air ventilation and for non-ventilated ventilation to also be able to ventilate in areas contaminated with ABC substances that may be contaminated with flue gases and the like. Ä. Are permeated and prevail in which oxygen-poor atmospheres, characterized in that a multi-part adapter allows the connection of respiratory protective equipment on the respiratory bag.
• to 2.1: The breathing bag is attached gas-tight on this connection piece
• to 2.2: On the respiratory bag side as a connecting piece with the connection thread 40 × 1/7 inch used for screwing on a respiratory filter or a regulator of a SCBA normal pressure according to DIN EN 137 Respiratory protective devices - Container devices with compressed air (SCBA) with full face mask - Requirements, testing , Labelling
• Re 2.3 The retaining valve screwed inside the adapter closes due to the overpressure that arises when the breathing bag is compressed. Thus, it prevents the unwanted escape of the ventilation air back during the beatmunungsvorganges.
• to 3 The retention valve consists of a rubber membrane and is mounted on a valve plate so that it allows breathing air to flow out of the adapter but blocks this direction in a gastight manner during ventilation.
• Ad. 4 This part of the adapter is required when using breathing regulators of SCBA overpressure according to DIN EN 137 with M 45 × 3 thread and screwed on by hand to the part of the adapter described under 2.2.
• To 5 This part of the adapter is required when using breathing regulators of SCBA overpressure according to DIN EN 137 with standard plug connection according to DIN 85 600 and screwed on by hand to the part of the adapter described under 2.2.

Claims (5)

Adapter for connection of respiratory filter or lung ventilator SCBA, characterized in that a multi-part adapter is attached to the bag of a bag ventilator so that it allows the connection of various respiratory protective devices. Adapter according to claim 1, characterized in that that the adapter consists of a cylindrical, tube-like connection piece PVC or similar Plastic as a housing is a total of 40 mm long and shaped 2.1 on the the respiratory bag facing side as a connecting piece with a Diameter of 40 mm. 2.2 on the out of the resuscitator pointing side as a connecting piece with the connection thread internal thread 40 × 1/7 inch. 2.3 inside with a thread for screwing of the retention valve the respiratory air during the beatmuning process. Adapter according to Claims 1 and 2, characterized that it consists of a rubber membrane and a valve disk Retention valve contains the ventilation air with a diameter of 20 mm inside the adapter is screwed in the middle. Adapter according to Claims 1, 2 and 3, characterized that he over a hand on the connection for Respirators screw-in module with internal thread M 45 × 3 has. To screw on the Connecting piece is it with the connection thread external thread 40 × Equipped 1/7 inch. Adapter according to claim 1, 2, 3 and 4, characterized that he over a hand on the connection for Respirators screw-in module for the use of breathing apparatus of SCBA overpressure with standard plug connection.