DE2355885A1 - OXYGEN HUMIDIFIER - Google Patents

Description

PATENT AGENCIES HENKEL - KERN - FEILER - HÄNZEL - MÜLLER

DR. PHIL. DIPL.-ING. DR. RER. NAT. DIPL.-ING. DIPL.-ING.

Telex: 05 29 8Q ₂ HNU D EDUARD-SCHMID-STRASSE 2 ™haben nkMünchennr ^ s afm

D-8000 MUNICH 90 SaSSSHi

Baxter Laboratories, Inc. '8, NOV, 1973

Morton Grove, III., V.St. A.

Oxygen humidification device .

The invention relates to an improved device for humidifying Oxygen given to a patient.

Oxygen administered to hospital patients must be humidified because of the inevitably low moisture content of the oxygen flowing out of conventional oxygen containers. In general, the oxygen is passed through bladder humidifiers, which add water to the oxygen, whereupon the humidified oxygen flows to the patient via a nasal cannula. -

The term "oxygen" used in the description is intended to apply to aüe Oxygen-containing gases such as air, practically pure oxygen and the like relate. The term "water" used is intended to mean distilled water, tap water and other aqueous liquids such as saline solutions.

A known type of oxygen humidification device or one The humidity control has a reusable glass container that can be used as a

/ 2

. 40-9819 / 0947 '

Water tank and serves as a bubble chamber, in conjunction with a Metal lid assembly, which closes the chamber and is equipped with inlet, Outlet and pressure relief openings is provided. The main one The disadvantage of this arrangement is that the device must be used before each use must be cleaned and refilled with water. Ideally, the Device cleaned after each use and wrapped to keep it sterile Maintain state. Nevertheless, there is a risk of contamination because the same humidifier for treating different ones Patient is used. Bacteria in the surrounding area can contaminate the device and the humidifier may then be reused without appropriate sterilization. In addition, the perfect © sterilization is expensive and time-consuming, which is why it is sometimes avoided by the hospital staff.

Contamination can also result from the fact that said humidifying device is supplied with water from the water pipe removed, procured in a separate container or distilled in the hospital and transferred from a container to the humidifier will. Through this? The procedure is a non-sterile open water supply created, which is a possible breeding ground for bacteria.

A second type of known oxygen humidifier.

is similar to the type first described, "but is used as a disposable device manufactured for use on a single patient. Although with this type of device the risk of contamination. because of the single use is partially turned off, the device is from an open water supply which in turn poses a risk of contamination. -

A third type of such device is a disposable one Cast or molded piece that has a water tank and bubble chamber inlets and outlets as a single-sided, cast-like arrangement, soft

- 409819/09 4 7 - / 3

235588a

can be destroyed after use. This kind of narration avoids the aforementioned problem of contamination, but it is comparatively expensive and takes up a large amount of storage space in the hospital.

It has now been found to be a very effective oxygen humidifier using a customary, i.e. standardized intravenous! Solution bottles of the kind that can be created after use can be thrown away and which is normally kept in large quantities in hospitals. This intravenous solution bottle contains their own pre-red of distilled water, so that the hospital staff not to fill the bottle from an open water supply needs. In addition, this bottle is thrown away after a single use, so that the result of reusing a humidifier resulting contamination is avoided. In addition, there is no need for separate stocks of intravenous solution bottles in the hospital and humidifying bottles to be present as one and the same bottle is used for both purposes.

The invention is therefore primarily based on the object of a effective arrangement for connecting a bottle of IV solution to a Provide oxygen supply to a patient with humidified oxygen to be able to supply. -

With this humidifier, the risk of contamination is said to be considerable Can be discounted as it uses a single bottle that filled with sterilized water.

In a preferred embodiment, the invention is an oxygen humidifier created as a water supply 'an intravenous solution container having a plug which is penetrated by two openings, wherein an air duct tube connected to the wall of the plug

409819/09 47

/ 4

-A-

that forms the opening. The air tube extends coaxially with the first opening into the lower part of the container, and the two openings communicate with the interior of the container.

A connection arrangement is provided for connecting the intravenous solution container to an oxygen supply. This connection arrangement has an oxygen inlet piece and means for connecting the upper part of the oxygen inlet piece to the oxygen supply. In a preferred embodiment of the lower part has the oxygen inlet, an oxygen inlet pipe piece a \ fi _t is einfuhrbar in the first opening.

In a preferred embodiment explained in more detail below an outlet tube is provided which forms an outlet channel for the humidified oxygen and which can be introduced into the second opening. One outlet for humidified oxygen communicates with the outlet tube and can be coupled to a nasal cannula. In the outlet duct of the oxygen humidifier arranged means prevent the passage of liquid droplets. The connector assembly carries means associated with the intravenous solution container are connectable to keep the connection assembly in engagement with the container and to hold the latter.

The following is based on a preferred embodiment of the invention the accompanying drawing explained in more detail. Show it:

Fig. 1 is a largely sectional side view of a

Oxygen humidification device with features according to the invention in the form of a conventional intravenous solution bottle a connection arrangement attached to it,

Fig. 2 is a perspective view of the connection arrangement according to

Fig. 1,

409819/0947

/ 5

Fig. 3 is a plan view of the terminal arrangement according to FIG

Which the coupling, the nozzle and the cannula connection are removed, "-

FIG. 4 shows a section along the line 4-4 in FIG. 3

5 shows a side view of the connection arrangement according to FIGS. 3 and

6 shows a perspective illustration on a reduced scale an oxygen humidifier according to the invention connected to an oxygen supply.

In the embodiment of the invention shown in the drawing, a connection arrangement made of plastic is provided which is used to connect a conventional oxygen supply to a conventional, water-filled intravenous solution container for humidifying the oxygen. The container shown in FIGS. 1 and fc is a customary, ie standardized, intravenous solution bottle, as described, for example, in US Pat. Nos. 2,878,808, 2,923,293 and 2,969,158. These bottles are usually made of glass and are available in different sizes, e.g. from 250 ml, 500 ml etc. The bottles are kept in sterile conditions as they contain solutions intended for introduction into the human body.

On the bottle 10, a bracket 12 is attached to the suspension on the Bottle is used during intravenous administration. However, this bracket is not essential to the invention. The opening of the bottle 10 is through a Rubber stopper 14 closed, the two communicating with the interior of the bottle Has openings 16 and 18. In the first opening 16, the smaller ones Diameter than the second opening 18, is made of plastic

-40981.9 ^{/ 0947/6}

of the air tube 20 is used, which extends to a point near the bottom of the bottle extends into the bottle of IQ.

The plug 14 is held in place by a metal clamping ring 22 held. Before use, the clamping ring 22 forms part of the bottle closure, which is partially removed for use, as described in US Pat. No. 2,969,158.

The intravenous solution bottles 10 used according to the invention are those containing water 24, i.e., distilled water or a saline solution. Such intravenous solution bottles are anyway kept in stock in numerous hospitals and clinics, so that according to the invention the effective Humidification of oxygen, i.e. practically pure oxygen or air, without the need to store additional humidification bottles is made possible. In addition, since the water contained in these bottles 24 is already sterilized, there is a risk of contamination due to use of tap water or an external water supply avoided.

The connection arrangement 2ό, which is used to connect the intravenous solution bottle to a conventional oxygen supply, has a base or a socket 28, which is connected to an oxygen inlet piece 30, an outlet tube 32, an outlet 34 for humidified oxygen and two downwardly protruding fingers 35 is provided. Dos oxygen inlet piece 30 sets a central bore 36 fixed, the lower portion of which consists of an insertable into the first opening 16 oxygen inlet pipe 38. One integral with the outlet 34 for the moistened Saueirsfoff formed, annular Retaining wall 39 is used to prevent a still to be explained Umbrella valve 48 is pulled out by the operator with his fingers.

Inside and outside diameters of inlet tube 38 and trachea 20 are each practically the same, with the outer diameter of both parts as

40 98 19/09 47

/ 7

are large that an interference fit of the inlet pipe and the air pipe in the opening 16 is established. When the inlet tube 38 is in the opening 16, its lower end is close to or abuts the upper end of the air tube 20. The tight fit of the tubes in the opening 16 creates an effective seal.

The outlet pipe 32 has a greater length than the inlet pipe 38 and is provided with a downwardly directed, sharp leading edge 40, which the Introduction of the connection arrangement 26 in the plug 14 allows and also favors the production of an effective seal. The outlet pipe 32 has a central bore 42 which is connected to the bore 44 of the outlet 34 communicates for the humidified oxygen.

When the oxygen is moistened, a certain amount of foam can form on the surface of the water. As a result of the shape of the neck of a conventional IV bottle and the water level in it (see FIG. 1), the foam can rise so high that some water in droplet form is entrained by the gas flowing through the bottle and carried out via the oxygen outlet 32. To eliminate this problem, a filter insert 43 is provided in the bore 42. This filter insert 43 prevents water from escaping from the bottle, ie it eliminates the problem of liquid droplets penetrating the outlet 34. In a preferred embodiment, the filter insert 43 is made of a polyolefin material, such as polypropylene, typically with a pore size of 75 JA to 500 JA , preferably 100 ^ i to 350 / H and especially from 300 / ^. Unexpectedly, it has been found that the filter element 43 used in accordance with the invention is effective in eliminating bacteria from the humidified air together with. able to ensure the water droplets, regardless of the fact that the pores of this filter insert are larger than in conventional bacterial filters. The filter insert can also consist of other materials that are not easily wetted by water, so that the water droplets

_{-409819/0947:} ^{/ 8}

"accumulated" at the filter and held back by the filter. Examples of such materials are polysfryrol, silicone rubber, polytetrafluoroethylene or the like, which ensure the same unexpected bacterial contamination. Although the filter insert used according to the invention is able to hold back bacteria, it has a low gas flow resistance so that comparatively large amounts of oxygen can flow through it at low pressure.

The outlet 34 for the humidified oxygen has a nasal cannula connector 46 , which is connected with a friction fit to the connection arrangement and tapers outwards, so that the connection arrangement can easily be connected to the catfish shown in FSg, 6 with a conventional nasal cannula

47 is connectable. For safety reasons there is a mushroom or umbrella valve

48 with the hole 42 at connection "Wenn der GegenmcS" for example

2
A value of 0.14 kg / cm excess ensures that the umbrella valve 48 has a. Uberdrueköblssß ^ because his © ine soap is still pushed up.

Asu der Öfcsrsslie des InlaßsfOcks 30 Is an ous Kunsisfoff existing

oter one mlf of the bore 36 in bore 52 -aufwsSst. The Sfiiteen 50 lsi only a herkSissmSlehen oxygen, Yorpa · "· via sms Gswlnddcupptong 54 vereifclndbar ^ the FIngssfeppen 56 and a mhi Snnefigawind © vsirashene bore 53 , which - on a normal oxygen supply ^ ml ¹ } outside aufeehmtibbsir ϊ $ ίί ₀ the clutch 54 is comparable with a Öffnunig 60 with one of the "Äußsiidurchmssses · the EinloßsftJciss 30 exceeding Difirdhmesser mhenp they DSB astride dgs ElnSaßsvidcs 30 displaced hf afesr _ff by the Sfufeen 50 on efasm Hesuiiferfeissn gehirsderf is.

© ^ / © S2s fm essential

-fSöTäilgs Gesfai «' and welssn | ®w / @ lSs eln & flange <S4ouiF, which from the hzv-κ from the Osjsss 66 of the U to the inside chQ & ht ,, according to

4 0

FIG. 5 is the perpendicular distance between the top of flange 64 and the underside of the base 28 practically equal to the height of the Kemmring 22, so that when the connector assembly 26 is inserted into the plug 14, the fingers reach over the clamping ring and the flange 64 under the inwardly directed portion 68 of the clamping ring 22 engages. the Finger 35 thus ensure that the water-filled ones are securely held Bottle on the connector assembly. The elasticity of the plastic base 28 and the downwardly protruding finger 35 helps ensure a secure rusting with. ·.

In operation of the invention; Oxygen humidifier a standard intravenous solution bottle filled with water is selected, the closure of which is torn open in the known manner. Then the Connection arrangement 26 in the stopper provided with the two bores pressed in, the oxygen inlet tube 38 in the manner described first enters the opening 16, while the underside of the base 28 on the upper side of the clamping ring 22 comes to rest. Then a Nasal cannula 47 pressed onto connector 46, and the connector assembly "Is" by means of the threaded coupling 54 with the outlet of a conventional one Oxygen supply 72 connected. -

ti "■ '---

With the invention, a new acidic

fabric humidification created, which has a standardized Siniröveniös- =. Solution container of the type used that is discarded after a single use:. thrown and usually in hsträchtl hospitals see Msngen Stock is held. The viewing arrangement is comparatively simple built up and ensures a secure seal and a secure mounting with respect to the SnfravenösösungsbehäSter.

Although the above is only an exemplary embodiment of the invention

is shown and described, are of course numerous to those skilled in the art

4 0-9 8 1 9/09 4 7 / ίο

" ¹⁰ ". 235588B

Modifications and changes are possible without departing from the scope or the basic concept of the invention. For example, the intravenous solution container can be a plastic container such as that sold under the name VJAFLEX by Fjmna Travenol Laboratories, Inc., Morton Grove, IH ./USA. Here, the air tube could be inserted into one of the two container outlets and the connection arrangement could be connected to the outlets in a manner similar to that of the plug 14 of the illustrated embodiment of the invention. The connection arrangement could then be attached to the plastic container with the aid of hooks which are deceived by the connection arrangement and which engage in openings which are normally defined by the outer end of the infusion solution container.

409819/0947

Claims (1)

Baxter Laboratories, Inc.
Morion Grove, 'HI., V.St.A. PATENTAN S P R Ü C H E l.j oxygen humidification device, characterized by an IV solution bottle has a two-ported opening Stopper, one with the wall of the stopper forming the first opening .. connected air pipe which is arranged coaxially to the first opening and extending to the bottom of the bottle, the two openings communicate with the inside of the bottle, one to connect the Intrevenösiösuhgsflasche with an oxygen supply provided connection = arrangement, di & an oxygen inlet piece, a 'device * for connection the upper part of the oxygen inlet piece with the oxygen supply, weave! the lower part of the oxygen inlet piece with the first opening connectable oxygen = inlet tube, an outlet tube for production one outlet path for the humidified oxygen, the one in the second Opening can be used, and one with the outlet pipe in connection standing outlet for humidified oxygen, which is connected to a .NcsenkanUl.e-can be coupled through an in the exit path of the device arranged device to prevent passage! of liquid = kelfefröpfehen and by one carried by the connection arrangement and lower vent bottle Engaging device for ■ Retaining the display assembly in engagement with the bottle and sum Carrying the bottle, ... "'. 2 "Device according to claim 1, characterized in that that the connection arrangement with .the outlet pipe and the outlet for 40 9 81970S 47 ... = "'/ ίο- humidified oxygen related safety valve for releasing back pressure as well as a device which enables the safety valve to be inadvertently removed from the connection arrangement prevented. 3. Device according to claim 1, characterized in that that the oxygen inlet tube can be inserted into the first opening. 4. Apparatus according to claim 1, characterized in that the passage of liquid droplets preventing device is a porous filter insert made of a material, for example a polyolefin and the like, which is not easily wettable by water, and that the filter insert has a pore size of 75 to 500 yi owns. 5. Oxygen humidification device, in particular according to one of the preceding claims, in which an intravenous solution bottle with a stopper having two openings is used as the water supply, an air tube being connected to the wall of the stopper defining the first opening and being coaxial with the first opening arranged 'air tube extends to the lower part of the bottle, and wherein the two openings communicate with the inside of the bottle, characterized by a connection arrangement for coupling the IV bottle to an oxygen supply, the connection arrangement with an oxygen inlet piece, a device for connecting the upper part of the oxygen inlet piece with the oxygen inlet , the lower part of the oxygen inlet piece having an oxygen inlet tube which can be inserted into the first opening, as well as an outlet tube which defines an outlet path for humidified oxygen and which can be introduced into the second opening , one with the A uslaSrobr communicating outlet for humidified oxygen, which with one 81370947 -. ^{/ 13} Nasal cannula is connectable, as well as one of the connection arrangement device carried and engageable with the bottle for Retaining the connector assembly in engagement with the bottle and for Carrying the bottle. '■ - "■"'. 6. Apparatus according to claim 5, characterized in that that the viewing arrangement is one with the outlet pipe and the outlet for humidified oxygen connected safety valve for releasing back pressure and a device which prevents unwanted removal of the safety valve from the connection arrangement. 7. Apparatus according to claim 5, characterized in that that in the outlet path of the oxygen humidifier a device intended to prevent fluid droplets from dehydrating is. '■ " 8. Apparatus according to claim 7, characterized in that the device preventing the passage of liquid droplets is a filter insert made of a material ¹ , such as a polyolefin, which is not easily wettable by water. 9. The device of claim 5, wherein the first opening is a has a smaller diameter than the second opening, characterized in that the inlet tube has an outside diameter practically matched to the inside diameter of the first opening, so that when the oxygen inlet tube is inserted into the first opening a pressure seal is produced between it and the first opening, that the lowermost end of the intake tube lies in a higher plane than the lowermost end of the outlet tube, which extends under the stopper into the bottle and is a downwardly pointed, sharp one 409819/0947 ^{/ U} Has front edge that in the outlet pipe a filter insert for •. Prevention of the passage of liquid droplets is arranged that with the Ausiaßrohr and the outlet for humidified oxygen, a safety valve is provided for releasing the counterpressure prevailing in these outlets, and that the connection arrangement is provided with downwardly protruding fingers which grip the neck of the bottle, around the To hold the connector assembly in engagement with the bottle and to carry the bottle. 10. Oxygen humidification device, characterized by an intravenous solution bottle with a stopper having two openings, an air tube which is connected to the wall of the stopper which forms the first opening and which is arranged coaxially to the first opening and extends to the lower part of the bottle, the two openings communicate with the interior of the bottle, to connect the Intravenöslösungsflasche provided with a Sauersfoffvorrat terminal assembly containing an oxygen-Einiaßstück, means for connecting the upper part of the oxygen-EiniaßstUcks with the oxygen supply, wherein the lower part of the oxygen ~ EinlGßsrUcks a with the first opening Has connectable oxygen inlet tube, © In outlet tube for producing an outlet path for the humidified oxygen, which can be inserted into the second opening, and an outlet for humidified oxygen which is connected to the outlet tube and which can be coupled to a nasal cannula Is ^ and by one of the connecting arrangement worn and with the Inferavenca solution bottle in the direction of the entrance. Bracket for the viewing arrangement In engagement with the bottle and for carrying 11. The device according to claim 10, characterized in that the bottom end of the Emiaßrofoiis in a higher level than the bottom end of the outlet tube, the inlet tube can not extend under the stopper ^ while the outlet tube protrudes under the stopper into the bottle .. 409819/0947 _ ι ς - · ι j 12. The device according to claim 10, characterized in that that the connection arrangement is made of plastic and has a base or a socket, which the oxygen inlet piece, the Ausiaßrohr and carries the outlet for humidified oxygen, and that the holder means has downwardly protruding fingers which attack on the neck of the bottle. 13 »Device according to claim 10, characterized in that that the first opening has a smaller diameter than that. second opening and that the outlet pipe has an outer diameter exceeding the diameter of the first opening. 14. Apparatus according to claim 10, characterized in that the outlet pipe has a downwardly icing, sharp leading edge. 15. Oxygen humidification device, in particular according to one of the preceding Claims in which the water supply is an intravenous solution - bottle with a stopper with two openings is used, whereby an air tube with the wall of the plug forming the first opening is connected, the air tube is arranged coaxially to the first opening and extends to the bottom of the bottle and the two openings communicate with the inside of the bottle, indicated by one to connect the intravenous solution bottle to an oxygen supply Serving connection arrangement, consisting of an oxygen inlet piece, a device for coupling the upper part of the oxygen inlet piece with the oxygen supply, the lower part of the oxygen inlet piece being connectable to the first opening and thus * communicating oxygen inlet pipe, an outlet pipe for Establishing an outlet path for humidified oxygen, the Outlet pipe can be inserted into the second opening, one with the outlet / 16 40 9819/0947 ^! pipe communicating outlet for humidified oxygen, the a nasal cannula can be connected, and one of the connection arrangement carried device engageable with the bottle is to attach the connector assembly to the bottle and the To hold bottle. 16. The device according to claim 15, characterized in that that the lowermost end of the inlet pipe is in a higher plane than the lowest end of the outlet pipe so that the inlet pipe is not under the stopper protrudes while the outlet tube protrudes under the stopper into the bottle. YJ '. Device according to claim 15, characterized in that the connection arrangement is made of plastic and has a base or a socket which carries the oxygen inlet piece, the outlet tube and the outlet for humidified oxygen, and that the holding device has downwardly projecting fingers engaging the bottle neck . 18. The device according to claim 15, characterized in that that the first opening has a smaller diameter than the second opening and that the outlet pipe has a diameter of the first opening has exceeding outer diameter. 19. The device still claim 15, "characterized in that that the outlet pipe has a sharp leading edge pointing downwards. 20. "Oxygen humidification device, in particular according to one of the preceding Claims, bsi which as a water reserve a usual or standardized intravenous ösuncpbehäiiet · with two with the Behsl! remember lsi connecting openings is used, as d υ r c h g e - / 17 03 81 9/094 / characterizes that one made of plastic, disposable Connection arrangement for connecting the IV solution container is provided with an oxygen supply that the connection arrangement an oxygen inlet piece, means for connecting the top of the oxygen inlet piece with the oxygen supply, wherein the lower part of the oxygen inlet piece communicates with the first opening Oxygen tube with an air tube extending into the lower part of the container, an outlet path for humidified Oxygen-defining outlet pipe connected to the second opening in Connection can be brought, and one with the Äuslaßrohr in connection has standing outlet for humidified oxygen, which is connected to a Nasal cannula is connectable, and in that the connector assembly carries a means engageable with the container for securing the connector assembly in engagement with the container and the container to hold. eees-PaSee— denotes that a customary or standardized intravenous solution bottle filled with water is used, which has a stopper provided with two openings, a luteon ring with the wall of the stopper defining the first opening being rounded and the The air tube is attached coaxially to the first opening and extends into the lower part of the bottle, a connection arrangement with an oxygen inlet tube connected to the first opening and an oxygen outlet tube inserted into the wide opening is attached to the stopper so that the connection Outer arrangement is connected to an oxygen supply ", that a nasal cannula is connected to the connection arrangement * and that an oxygen flow from the Sauei * - stöffvoirrai-'aurch the Oxerefoffeinlaßrohr, the Luffrohr, the water contained in the FIa ^ eKe, the outlet pipe and the nasal cannula 4098 19/094 7 Baxter Laboratories, Inc. January 25th New claim 21 21. The device according to claim k _a, characterized in that the filter insert has a pore size of 100 to 350 Ai. 409819/0947