FI60938B - OEVNINGSMODELL FOER KONSTGJORD ANDNING - Google Patents

Description

1 -.- 1, i l,., .... ADVERTISEMENT r n O? en 3® · M ("» utlAconinosskaift 609 38 *** fP ^ PC (45) Patent granted 13 04 1902 t ravv Patent meddelat V V '- ^ (51) Kv.lk?/IntXI.3 G 09 B 23 / 34 FINLAND — FINLAND VV P «t« nttlh »k * mut - Pit * n« ruöknlnf 1121/73 (22) H »k # ml» ptlyl - Antekninpdaj 09 · Oi. 73 * * (23) AlkupUvt - Glltlf hattdaf 09 · 0 U. J 3 (41) Interpreters | ulklMkal - Bllvlt offentllj 11.10.73

Patent and Registration Office ..... .. . .......

_. ', ___. (44) Date of publication and publication. -, "

Patent-and-Register-Register '' An «ekia utiafd och uti-ikriftan pubtkand 31.12.81 (32) (33) (31) fj74 * tty atuolkaut —Begird prlorltat 10.Oi.72

Sweden-Sweden (SE) U603 / 72 (71) Ruth Lea Hesse, Skovtoftebakken 19 »Virum, K ^ benhavn, Denmark-Danmark (DK) (72) Hans Christian Blumensaadt, Virum, Denmark-Danmark (DK) (7U) Oy The present invention relates to an exercise model for administering artificial respiration by the mouth-to-mouth or mouth-to-nose method, the model comprising parts comprising, inter alia, the lungs and the head, the main part being hollow and the other part being hollow. the nasal part is interchangeable and, on the other hand, an insertable, replaceable, preferably disposable, inflatable bladder, the inlet of which communicates with at least one breathing opening in the nasal part, and the cavity inside the main part is connected by a cable to a bag part and which can be expanded by the air which recedes from the cavity in the main part when the bladder arranged there is blown through the nasal-mouth part.

Training devices for artificial respiration training should be suitable for teaching large numbers of students so that students can take turns to perform successive simulated resuscitation exercises with the device. In addition to a bag acting as a lung or the like, certain training devices are also provided with a bag which acts as a stomach and a valve part which directs the blown air into the stomach instead of the lungs when the air is blown in the wrong way.

There is a risk of the spread of infections in all exercise equipment where air is blown from the pupil's mouth into flexible bags, sacks and the like, and such a risk exists when the air vents are provided with mouthpieces that are replaced for each new patient. This is because the risk of infection is largely due to the micro-organisms that travel with the inflatable air inside the training device and remain there even if the mouth guard or the entire mouth-nose part of the device is replaced.

To avoid the risk of infection, a bladder placed in the blowing opening at the throat of the training model has been used, whereby the inflatable part of the bladder fills the hollow space of the training model head and is tightly closed by this connecting space from the connecting lead leading to a flexible, temporarily expanding lung bag. An elastic rubber balloon of the toy balloon type has been used as the bladder. When air is blown into the bladder so that air enters it, it forces the air to flow from the cavity of the head all the way down the line into a bag that acts as a lung, which consequently expands. The simulated static or dynamic resistance of the lungs and thorax to exhalation is thus completely dependent on the properties of the replaceable bladder. The consequence of this is that such a bladder must be subject to very high quality requirements in order for the training device to function in both anatomically correct and reproducible ways. However, due to their low cost, ordinary rubber balls used do not meet these requirements at all.

It is an object of the present invention to provide such

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a training device or model which, above all, makes it possible to simulate the resistance of the lungs and the thorax against inflating them. completely independent of the characteristics of the interchangeable bladder used and which, moreover, makes it possible to obtain the impression of lung resistance regardless of the bladder resistance.

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In particular, it is an object of the invention to provide a solution in which the sufficiency of the blow is easily ascertained. In this case, the blowing is not carried out too vigorously, which would be unnecessary and even harmful. This is especially important when the target of artificial respiration is a child or a person with a smaller than normal lung size. The training ground according to the invention is characterized in that the exchange bladder intended for use in particular in connection with a certain category of patients, for example children, in a maximally inflated space without resistance has a volume smaller than said cavity but large enough so that the air in the space gives way to the bag forming the lung part, there would indicate the supply of air required for the application of artificial respiration.

The replaceable bladder may be made of a suitable, substantially non-stretchable material, such as paper. The bladder can then be blown to its predetermined maximum volume without overcoming the bladder's own resistance.

The invention will now be described in more detail with reference to the accompanying drawing, which shows a section of a training device or model according to an embodiment of the invention in section.

The drawing shows a washer 1 belonging to or detached from the training ground, on which the main part 2 of the model rests. The main part 2 comprises a nose part 3 and a recess 4 with an air opening 4a. This opening corresponds to the joint junction of the nose and mouth to the trachea.

Between the throat 2a belonging to the main part 2 and the part 1a corresponding to the thorax, there is a neck part 5. The throat 2a is provided with an opening or a hole 6. With the exception of the openings 4a and 6, the main part is completely tight. The hose 7 corresponding to the trachea, which passes through the neck part 5, is tightly connected at one end to the opening 6 and terminates at the other end in the cavity 15 corresponding to the lungs in the thorax. In the embodiment shown in the drawing, the flexible film 16 is placed tightly around the hollow space 15. The membrane 16 can be stretched to position 16a by introducing air from the cavity of the main body 2 into space 15, which in turn is provided by blowing air through the mouthpiece 9 into the associated bladder 17. Stretching of the membrane 4 60938 is indicative of proper artificial respiration. It is, of course, possible for the flexible membrane 16 to be replaced by a gas-tight flexible bag tightly connected to the hose 17. In this case, the bag forms a lung cavity 15. The lung-like parts are made to form a certain resistance resistance to inhalation of air, wherein the parts corresponding to the lungs can be inflated to at least a predetermined volume corresponding to a properly performed artificial respiration.

The part 8 corresponding to the lower jaw is fixed to the bearing 8a in the main part 2 on its neck side side. The main part is itself articulated by a bearing 5a to the neck part 5 and the neck part 5 is in turn articulated by a bearing 5b to the chest 1a. However, the mobility of the head, neck and lower jaw does not form an integral part of the present inventions, which is why it is not described in more detail here but reference is made to U.S. Patent 3,049,811.

The space between the nose part 3 and the lower jaw 8 is tightly covered by a masked nose - kappa le 9, which is a flexible material. The mouth-nose piece 9 has a protruding flange 10 directed from the mouth-nose piece 9 into the main part and extending into the opening 4a, the flange resting tightly against the support formed by the wall of the opening 4a and held in place by suitable members such as the rounded rim of the flap head shown here. 11 through.

The mouth-nose body 9 includes an IM-like part 12 which covers a part of the lower jaw 8. The mouth-nose body 9 complements the main part 2 and the lower jaw part 8 in such a way that the shape of the training pattern corresponds in this respect to the human head and face.

The mouth-nose body 9 is hollow and provided with openings 13 and 14 corresponding to the mouth and nose, which communicate with an internal cavity 9a belonging to the mouth-nose> body 9. The cavity is associated with an opening 10a which passes through the flange 10 and connects the cavity 9a. bladder 17.

The mouth-to-nose piece should be so large that the student's mouth only touches it and not any other parts of the model that are not changed individually for each student.

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In the embodiment of the invention shown in the drawing, there is an opening 10a inside the flange 10 and a bladder neck or protrusion 1Θ is connected to the flange rim 11 so that the bladder communicates with the cavity 9a of the mouth-nose piece 9. The connection is airtight to insulate the cavity formed by the cavity space 9a and the main part 2 from each other. When blowing air into the mouth and / or nasal openings 13,14 in the mouth-nose body 9, the bladder is inflated to the size indicated by the broken line 17a, whereby the air in the cavity formed by the main part 2 enters the lung cavity 15 along the hose 7. the enlargement of the bladder 17 to the position 17a does not cause any stretching of the bladder material, but the increase in volume is only due to the straightening of the folds of the initially folded bladder.

The volume of the bladder 17 shown in the drawing is such that in the filled state it takes up a considerable part of the total volume of the main part 2 and consequently penetrates a corresponding amount of air into the cavity 15, causing the membrane 16 to stretch to the position 16a shown in the drawing. The bladder 17 is preferably shaped so that the pressed walls of the folded bladder cannot adhere to each other. This is achieved, for example, by the fact that the bladder material is patterned or formed three-dimensionally or that its material is coated with an anti-adhesive film or powder.

In the embodiment according to the drawing, the neck 18 of the bladder 17 is fitted to the rim of the flange 10 of the mouth-nose body 9 and the flange 10 is in turn fitted to the opening 4a in the main part. However, it is possible that the bladder 17 is attached directly to the main part 2. In this case, the neck of the bladder is connected to the opening 4a of the main part 2, whereby the outer surface of the neck is located tightly against the walls of the opening 4a.

Attached to the opening 6 in the main part is a spacer rail 20, seen in cross-section in the drawing, which on the one hand prevents the wall 17 of the bladder 17 from coming into contact with the opening 6 and thus closing the air hose 7 and on the other hand allows air to pass through the opening 6 from such air closures. , which may arise between the bladder 17 and the inner wall of the main part 2. The side of the rail 20 has at least one protective member 19 intended to prevent the bladder 17 of the compressed 6 60938 from adhering to the rail 20 when air is introduced into or out of the bladder. The same effect as with the spacer and the shield can be achieved by placing a gas-permeable wall inside the main part.

After the student has used the training device, the mouth-nose piece 9 and the bladder 17 attached to it are removed and replaced with a cleaned or new mouth-nose piece 9 and a cleaned or new bladder 17.

A usable bladder 17 that functions as desired can be made so inexpensively that it can be discarded after a single use. Since the bladder is at least so large in volume that it corresponds to the expansion of the parts corresponding to the lungs during properly performed artificial respiration, it is sufficient for the bladder to be inflated from the collapsed space to the filled space indicated in the drawing. The bladder can be made, for example, of two round, flat pieces of polyethylene or polypropylene, which are welded together at their edges by means of heat. The bladder is characterized in that it has a volume in the maximally inflated space which is smaller than the volume of the cavity of the main body but which is so large that the amount of air which has passed into the cavity corresponding to the lungs during insufflation is sufficient for artificial respiration.

Enlargement of the pulmonary cavity indicates this correct amount of air, which is especially important when the lung size of the patient, e.g., a child, is smaller than normal.

The exercise model according to the invention has a primary air system into which the student blows air, as well as a completely separate secondary air system comprising a main part of the cavity outside the bladder and parts corresponding to the lungs, the bladder forming an air-impermeable wall separating these systems. The bladder can be filled at least to the extent that it can be seen from the parts corresponding to the lungs that artificial respiration has been performed correctly, and the pressure increase generated in the primary air system then passes without loss to the secondary air system. It is possible to connect measuring devices to the training model according to the invention, with which the air required for artificial respiration is measured from the part corresponding to the lungs.

Claims (2)

7 60938 pressure and volume. Thanks to the separate air systems, said parts do not come into any contact with the blown air, which may contain disease-causing microbes. It will be apparent to those skilled in the art that embodiments of the invention are not limited to the above example but may vary within the scope of the appended claims. 1. An exercise model for administering artificial respiration by the mouth-to-mouth or mouth-to-mouth method, comprising parts comprising, inter alia, the lungs and the head, the main part being hollow and requiring, on the one hand, a nose-to-mouth part and, on the other hand, an interchangeable, preferably a disposable, inflatable bladder, the inlet of which communicates with at least one airway in the nose-mouth, and wherein the cavity inside the main part is connected by a wire to a bag which mainly forms the lung part and which can be expanded by air escaping from the main part a cavity when the bladder arranged therein is blown through the nasal-mouth part, characterized in that the exchange bladder (17) intended for use in particular in connection with a certain category of patients, for example children, has a volume in the maximally inflated space (17a) without resistance, is smaller than said cavity (2) but sufficiently large, j take the air which, in this maximally inflated space, gives way to the bag forming the lung part (16), there would indicate the supply of air required for the application of artificial respiration. Exercise model according to Claim 1, characterized in that the bladder (17) is made of a substantially non-stretchable material. /