EP1065432B1 - Portable device for acquisition of oxygen autonomy - Google Patents

Portable device for acquisition of oxygen autonomy Download PDF

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Publication number
EP1065432B1
EP1065432B1 EP00401848A EP00401848A EP1065432B1 EP 1065432 B1 EP1065432 B1 EP 1065432B1 EP 00401848 A EP00401848 A EP 00401848A EP 00401848 A EP00401848 A EP 00401848A EP 1065432 B1 EP1065432 B1 EP 1065432B1
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EP
European Patent Office
Prior art keywords
support
bottle
oxygen
cursor
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP00401848A
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German (de)
French (fr)
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EP1065432A1 (en
Inventor
René Conin
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Lambert Yves
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Lambert Yves
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0426—Volume
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0443—Flow or movement of content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0495—Indicating or measuring characterised by the location the indicated parameter is a converted measured parameter

Definitions

  • the present invention relates to a device portable acquisition of a value of autonomy of a oxygen tank.
  • the invention can be applied to the medical field and especially in the case of a transport of a patient under oxygen therapy. In such a context, the exact and certain knowledge of autonomy of oxygen is paramount.
  • the oxygen autonomy is directly related to the volume of gas remaining in the bottle and at the desired flow rate. This flow can be imposed by the patient's therapy, or defined according to certain criteria independent of this invention.
  • all oxygen cylinders generally used by rescuers, nurses, or other persons include a pressure gauge plugged into the upper chamber holder's HP pressure which indicates at any time the internal pressure P in bars.
  • An adjusting screw R allows to fix and / or modulate the output flow of the bottle.
  • This flow D can be monitored at any time by the flowmeter interposed between the HP high pressure chamber and the breathing equipment.
  • This formula is simple and it is usually a question of the habilitation exam firefighters, paramedics and other users of oxygen bottles for therapeutic purposes.
  • the present invention provides a simple device, functional and portable to get fast and directly the oxygen autonomy from the gauge pressure and oxygen flow rate imposed by the desired application.
  • the invention relates more particularly to a portable device of acquisition of a value of oxygen autonomy contained in a bottle, the external pressure being constant, characterized in that that the device comprises a support bearing at least a table of values addressed by a cursor in function of the inner pressure P of the bottle and fixed D rate, and a read window indicating directly the oxygen autonomy value of the bottle for this inner pressure P and this flow D given, and in that said device is independent from the bottle.
  • the support is a hardware support, the cursor being a moving cursor moving on the support, the reading window being integral with the cursor.
  • the support has a front and back, each side being respectively equipped with a table of values for different bottle.
  • the front of the support presents a table of values of oxygen autonomy for a bottle with a capacity of one cubic meter
  • the back presents a table of values of autonomy of oxygen for a bottle with a capacity of three cubic meters.
  • certain values crucial tables are identified by a code of colors.
  • the present support a rectangular shape of ruler, the cursor is moving longitudinally between two stops.
  • the stops are suitable for receive a distinctive sign and / or information.
  • the support presents a disc shape, the moving cursor around the disc.
  • the support is composed of a material selected from paper, cardboard, glass, plastic.
  • the support is an electronic storage medium, the cursor being controlled by a support addressing program of memorization by the content, the value of autonomy of oxygen being displayed numerically in the window reading.
  • the storage medium has a plurality of value tables respectively corresponding to different bottles.
  • the support of storage includes a plurality of valuable tables respectively corresponding to safety reserves different.
  • the internal pressure P data is read on a manometer placed on the oxygen tank.
  • the flow D fixed by the user, determines the position of the cursor on the support.
  • the invention provides a simple and effective solution to the problem of rapid and precise calculation of autonomy of oxygen from a bottle intended for oxygen therapy, or any other application.
  • the device according to the invention makes it possible to reduce the risks of miscalculation by proposing the result by a direct reading in a table to using a slider.
  • the device of the invention also allows to anticipate a possible change of bottle.
  • the new autonomy time would be directly known by a simple movement of the cursor on the table.
  • the device according to the present invention the advantage of being easily transportable. He can effect to be slipped into the pocket of trousers, a blouse or overalls.
  • a support 1 as a disk with a moving cursor circularly and pointing to a value of a radius of the disk.
  • the support 1 may be composed of a material selected from paper, cardboard, glass, plastic.
  • the device according to the invention comprises a support 1 of rectangular shape whose dimensions are less than or equal to 20 cm long and 6 cm large.
  • the reading slider can thus be easily slipped into the pocket of a user's clothing, such as pants or a blouse, so that you always at hand.
  • the support 1 has a front 5 and a back 6 to allow the realization of two reading tables on a single ruler.
  • each face 5 and 6 of the support 1 comprises a table of values respectively corresponding to values of autonomy of oxygen as a function of the pressure P remaining in the bottle and the flow rate D for two different bottle capacities.
  • the front side presents a table of values for a bottle of 1m 3 , that is to say 5 liters
  • the reverse side presents the same table for a bottle of oxygen of 3 m 3 , or 15 liters.
  • a cursor 2 provided with a reading window 3 is able to move along the support 1 between two stops 4.
  • the slider 2 includes two columns, a first column on which are reported the different values of P pressure remaining in the bottle, and a second column consisting of a read window 3.
  • the user To know the autonomy of oxygen, the user must first read the pressure indicated on the gauge of the bottle. He must then decide and / or apply a flow of oxygen D at the outlet of the bottle and then he's pointing cursor 2 at the table of hardware support values 1.
  • the user therefore places the window 3 of the cursor 2 on the column of flow D determined beforehand, then he finds, on the cursor 2, the line corresponding to the oxygen pressure P indicated by the manometer, and can read directly, on the same line and in the column of the window 3 the remaining oxygen time.
  • the times of autonomy indicated in the tables can advantageously take into account the margin of security of 10% deducted at the theoretical time.
  • the device according to the invention thus allows a direct and rapid reading that eradicates all risk of error related to a miscalculation.
  • the new autonomy would be quickly known by simply moving the cursor 2 to place the window 3 in the column corresponding to the new flow D.
  • the stops 4 frame the support 1. They on the one hand to maintain the cursor 2 on the support 1 of the slide, and secondly they can advantageously serve as a support for information various such as instructions or indentifiants.
  • the tables of autonomy values are made more readable by color codes to identify some crucial values. It is thus possible to anticipate a change of bottle for example.
  • the acquisition device a value of oxygen autonomy can be constituted by an electronic device.
  • the support 1 is a storage medium composed of at least one integrated circuit chip.
  • the electronic support 1 comprises at least one table of values corresponding to a given oxygen bottle capacity, for example 1m 3 , and to a given safety reserve, for example 10%.
  • the electronic support 1 can advantageously comprise a plurality of tables of values corresponding to a plurality of bottle with a plurality of safety reserves respectively.
  • the device according to the invention can then present the general form of a calculator electronic device with a reading window 3 and control keys 10.
  • the control keys 10 make it possible to realize an addressing of the storage medium 1 by the content by positioning a playback slider 2 on the memory box corresponding to the desired value.
  • the read slider 2 is then constituted by a device for addressing a memory by the content, as is known in electronics.
  • a control key 11 can make it possible to select the bottle capacity used, then two other keys 12, 13 make it possible to indicate, through a keyboard numbered 14, the respective values pressure P bottle and D flow desired.
  • control key 15 can allow to select the security reserve desired, from 10% to 30% depending on the applications.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The device does not depend on a connection to the cylinder, but provides a calculated value for the quantity of gas remaining on the basis of measured parameters. The portable device provides an independent indication of the amount of oxygen remaining in a gas cylinder, whilst the external pressure is constant. It comprises a support (1) carrying at least one table of values, addressed by a cursor as a function of the pressure within the gas cylinder, and a fixed flow rate. A display window (3) shows directly the quantity of oxygen remaining within the cylinder as a function of these two values. The device may operate by use of a slide-rule type device whereby the cursor points to specific figures within a table. Alternatively the device may be an electronic processor with a memory, in which case the pressure and flow rate parameters may be entered via a keypad, and the resulting quantity of oxygen displayed on an electronic display panel.

Description

La présente invention concerne un dispositif portable d'acquisition d'une valeur d'autonomie d'une bouteille d'oxygène.The present invention relates to a device portable acquisition of a value of autonomy of a oxygen tank.

L'invention peut s'appliquer au domaine médical et tout particulièrement dans le cas d'un transport d'un patient sous oxygénothérapie. Dans un tel contexte, la connaissance exacte et certaine de l'autonomie d'oxygène est primordiale.The invention can be applied to the medical field and especially in the case of a transport of a patient under oxygen therapy. In such a context, the exact and certain knowledge of autonomy of oxygen is paramount.

Il existe déjà de nombreux dispositifs d'acquisition d'une valeur d'autonomie d'oxygène, comme par exemple US 4 876 903 A, considéré comme art antérieur le plus pertinent, en particulier dans le domaine de la plongée sous-marine, mais les contraintes sont alors différentes du fait que la pression de gaz restant dans la bouteille varie en fonction de la profondeur.There are already many devices acquisition of an oxygen autonomy value, such as for example US 4,876,903 A, considered as the most relevant prior art, in particularly in the field of scuba diving, but the constraints are then different from the fact that the gas pressure remaining in the bottle varies in depth function.

Dans le cas d'une application à pression atmosphérique constante, l'autonomie d'oxygène est directement liée au volume de gaz restant dans la bouteille et au débit souhaité. Ce débit peut être imposé par la thérapie du patient, ou définie selon certains critères indépendants de la présente invention.In the case of a pressure application constant atmospheric, the oxygen autonomy is directly related to the volume of gas remaining in the bottle and at the desired flow rate. This flow can be imposed by the patient's therapy, or defined according to certain criteria independent of this invention.

Une formule, connue des utilisateurs de bouteilles d'oxygène, relie ces différentes variables.A formula, known to bottle users of oxygen, connects these different variables.

Cette formule s'appuie sur la loi de Boyle Mariotte qui stipule que le produit « pression » par « volume » d'un gaz reste constant à température constante. Ainsi, le volume d'un gaz comprimé dans une bouteille varie de façon inversement proportionnel à la pression. Cette loi est vérifiée pour une pression extérieure constante. This formula is based on the law of Boyle Mariotte which states that the product "pressure" by "volume" a gas remains constant at a constant temperature. So, the volume of a compressed gas in a bottle varies from inversely proportional to the pressure. This law is checked for external pressure constant.

Comme illustré sur la figure 1, toutes les bouteilles d'oxygène généralement utilisées par les secouristes, infirmiers, ou autres personnes, comprennent un manomètre branché sur la chambre haute pression HP du détenteur qui indique à tout moment la pression intérieure P en bars.As illustrated in Figure 1, all oxygen cylinders generally used by rescuers, nurses, or other persons, include a pressure gauge plugged into the upper chamber holder's HP pressure which indicates at any time the internal pressure P in bars.

Une vis de réglage R permet de fixer et/ou de moduler le débit en sortie de la bouteille. Ce débit D peut être surveillé à tout moment par le débitmètre intercalé entre la chambre haute pression HP et l'appareillage de respiration.An adjusting screw R allows to fix and / or modulate the output flow of the bottle. This flow D can be monitored at any time by the flowmeter interposed between the HP high pressure chamber and the breathing equipment.

Lorsque l'on connaít la pression restante P, on peut directement en déduire le volume restant V en posant P x V = constante.When we know the remaining pressure P, we can directly deduce the remaining volume V in posing P x V = constant.

La formule reliant le contenu C de la bouteille en litre V au débit imposé D pour donner le temps d'autonomie T s'écrit comme suit : C/D = T The formula connecting the contents C of the bottle in liter V to the imposed flow rate D to give the autonomy time T is written as follows: C / D = T

Les secouristes, infirmiers ou autres, utilisent généralement des bouteilles d'oxygène comprimé normalisées à 1m3 ou à 3m3 correspondant respectivement à un volume de 5 ou 15 litres.Rescuers, nurses or others, generally use compressed oxygen cylinders normalized to 1m 3 or 3m 3 respectively corresponding to a volume of 5 or 15 liters.

Par exemple, pour une bouteille de 5 litres, si la pression au manomètre indique 100 bars, on aura alors 500 litres d'oxygène disponibles.For example, for a 5 liter bottle, if the gauge pressure indicates 100 bar, then 500 liters of oxygen available.

Si le débit imposé est de 5 l/min, on disposera de 100 minutes d'autonomie.If the imposed flow rate is 5 l / min, we will have 100 minutes of autonomy.

La sécurité impose une réserve qui peut être fixée à 10% du besoin théorique, ce qui nous amène à une autonomie de 90 minutes, soit 1h30. La valeur de 10% est imposée aujourd'hui par le ministère de l'intérieur, mais d'autres écoles de formation préconisent une réserve pouvant atteindre 30% de la valeur théorique en autonomie. Security imposes a reserve that can be fixed 10% of the theoretical requirement, which brings us to a autonomy of 90 minutes, or 1:30. The value of 10% is imposed today by the Ministry of inside but other training schools advocate a reserve of up to 30% of the theoretical value in autonomy.

Cette formule est simple et elle constitue généralement une question de l'examen d'habilitation des pompiers, ambulanciers et autres utilisateurs de bouteilles d'oxygène à des fins thérapeutiques.This formula is simple and it is usually a question of the habilitation exam firefighters, paramedics and other users of oxygen bottles for therapeutic purposes.

Néanmoins, dans l'urgence de certaines situations, cette formule simple est quelque fois oubliée ou mal appliquée ce qui peut entraíner de graves conséquences.Nevertheless, in the urgency of certain situations, this simple formula is sometimes forgotten or badly applied, which can lead to serious consequences.

La présente invention propose un dispositif simple, fonctionnel et portable pour obtenir rapidement et directement l'autonomie d'oxygène à partir de la pression indiquée au manomètre et du débit d'oxygène imposé par l'application souhaitée.The present invention provides a simple device, functional and portable to get fast and directly the oxygen autonomy from the gauge pressure and oxygen flow rate imposed by the desired application.

L'invention concerne plus particulièrement un dispositif portable d'acquisition d'une valeur d'autonomie d'oxygène contenu dans une bouteille, la pression extérieure étant constante, caractérisé en ce que le dispositif comprend un support portant au moins une table de valeurs adressée par un curseur en fonction de la pression intérieure P de la bouteille et d'un débit D fixé, et une fenêtre de lecture indiquant directement la valeur d'autonomie d'oxygène de la bouteille pour cette pression intérieure P et ce débit D donnés, et en ce que ledit dispositif est indépendant de la bouteille.The invention relates more particularly to a portable device of acquisition of a value of oxygen autonomy contained in a bottle, the external pressure being constant, characterized in that that the device comprises a support bearing at least a table of values addressed by a cursor in function of the inner pressure P of the bottle and fixed D rate, and a read window indicating directly the oxygen autonomy value of the bottle for this inner pressure P and this flow D given, and in that said device is independent from the bottle.

Selon une caractéristique, le support est un support matériel, le curseur étant un curseur mobile se déplaçant sur le support, la fenêtre de lecture étant solidaire du curseur.According to one characteristic, the support is a hardware support, the cursor being a moving cursor moving on the support, the reading window being integral with the cursor.

Selon une caractéristique, le support présente un recto et un verso, chaque face étant respectivement munie d'une table de valeurs pour des capacités de bouteille différentes. According to one characteristic, the support has a front and back, each side being respectively equipped with a table of values for different bottle.

Selon une application, le recto du support présente une table de valeurs d'autonomie d'oxygène pour une bouteille d'une capacité d'un mètre cube, et le verso présente une table de valeurs d'autonomie d'oxygène pour une bouteille d'une capacité de trois mètres cube.According to one application, the front of the support presents a table of values of oxygen autonomy for a bottle with a capacity of one cubic meter, and the back presents a table of values of autonomy of oxygen for a bottle with a capacity of three cubic meters.

Selon une caractéristique, certaines valeurs cruciales des tables sont repérées par un code de couleurs.According to one characteristic, certain values crucial tables are identified by a code of colors.

Selon un mode de réalisation, le support présente une forme rectangulaire de réglette, le curseur se déplaçant longitudinalement entre deux butées.According to one embodiment, the present support a rectangular shape of ruler, the cursor is moving longitudinally between two stops.

Selon une particularité, les butées sont aptes à recevoir un signe distinctif et/ou des informations.According to one feature, the stops are suitable for receive a distinctive sign and / or information.

Selon un autre mode de réalisation, le support présente une forme de disque, le curseur se déplaçant autour du disque.According to another embodiment, the support presents a disc shape, the moving cursor around the disc.

Selon les variantes de réalisation, le support est composé d'un matériau choisi parmi du papier, du carton, du verre, du plastique.According to the variant embodiments, the support is composed of a material selected from paper, cardboard, glass, plastic.

Selon un autre mode de réalisation, le support est un support de mémorisation électronique, le curseur étant commandé par un programme d'adressage du support de mémorisation par le contenu, la valeur d'autonomie d'oxygène étant affichée numériquement dans la fenêtre de lecture.According to another embodiment, the support is an electronic storage medium, the cursor being controlled by a support addressing program of memorization by the content, the value of autonomy of oxygen being displayed numerically in the window reading.

Selon une particularité, le support de mémorisation comporte une pluralité de tables de valeur correspondant respectivement à des capacités de bouteilles différentes.According to a particularity, the storage medium has a plurality of value tables respectively corresponding to different bottles.

Selon une autre particularité, le support de mémorisation comporte une pluralité de tables de valeur correspondant respectivement à des réserves de sécurité différentes. According to another particularity, the support of storage includes a plurality of valuable tables respectively corresponding to safety reserves different.

Selon une caractéristique, la pression intérieure P donnée est lue sur un manomètre disposé sur la bouteille d'oxygène.According to one characteristic, the internal pressure P data is read on a manometer placed on the oxygen tank.

Selon une autre caractéristique, le débit D, fixé par l'utilisateur, détermine la position du curseur sur le support.According to another characteristic, the flow D, fixed by the user, determines the position of the cursor on the support.

L'invention apporte une solution simple et efficace au problème du calcul rapide et précis de l'autonomie d'oxygène d'une bouteille destinée à l'oxygénothérapie, ou à toute autre application.The invention provides a simple and effective solution to the problem of rapid and precise calculation of autonomy of oxygen from a bottle intended for oxygen therapy, or any other application.

Le dispositif selon l'invention permet de réduire les risques d'erreurs de calcul en proposant le résultat par une lecture directe dans une table à l'aide d'un curseur.The device according to the invention makes it possible to reduce the risks of miscalculation by proposing the result by a direct reading in a table to using a slider.

Le dispositif de l'invention permet en outre d'anticiper un éventuel changement de bouteille.The device of the invention also allows to anticipate a possible change of bottle.

Dans le cas où le débit serait modifié par l'utilisateur, le nouveau temps d'autonomie serait directement connu par un simple déplacement du curseur sur la table.In the event that the debit is changed by the user, the new autonomy time would be directly known by a simple movement of the cursor on the table.

De plus le dispositif selon l'invention présente l'avantage d'être aisément transportable. Il peut en effet être glissé dans la poche d'un pantalon, d'une blouse ou d'une salopette.In addition, the device according to the present invention the advantage of being easily transportable. He can effect to be slipped into the pocket of trousers, a blouse or overalls.

D'autres particularités et avantages de l'invention apparaítront à la lecture de la description qui suit donnée à titre d'exemple illustratif et non limitatif est faite en référence aux figures annexées pour lesquelles :

  • La figure 1, déjà décrite, illustre schématiquement le détenteur d'une bouteille d'oxygène ;
  • Les figures 2a et 2b illustrent respectivement le recto et le verso du dispositif de lecture de tables selon le premier mode de réalisation de l'invention ;
  • figures 3a et 3b illustrent respectivement les deux cotés du curseurs s'adaptant sur les deux faces du dispositif de la figure 2 ;
  • la figure 4 est un schéma du dispositif selon le deuxième mode de réalisation de l'invention.
Other features and advantages of the invention will appear on reading the following description given by way of illustrative and nonlimiting example is made with reference to the accompanying figures for which:
  • Figure 1, already described, schematically illustrates the holder of a bottle of oxygen;
  • Figures 2a and 2b respectively illustrate the front and back of the table reading device according to the first embodiment of the invention;
  • FIGS. 3a and 3b respectively illustrate the two sides of the sliders fitting on both sides of the device of FIG. 2;
  • Figure 4 is a diagram of the device according to the second embodiment of the invention.

La description qui suit fait référence aux figures 2 et 3, qui illustrent un mode de réalisation préférentiel du dispositif d'acquisition d'une valeur d'oxygène selon l'invention dans lequel le support 1 du dispositif se présente sous la forme matériel d'une réglette.The following description refers to the figures 2 and 3, which illustrate an embodiment preferential value acquisition device according to the invention in which the support 1 of the device comes in the material form of a strip.

Néanmoins, d'autres formes de supports du dispositif peuvent être envisagés sans sortir du cadre de la présente invention, en particulier un support 1 sous forme de disque avec un curseur se déplaçant circulairement et pointant une valeur d'un rayon du disque.Nevertheless, other forms of device can be envisaged without departing from the scope of the present invention, in particular a support 1 as a disk with a moving cursor circularly and pointing to a value of a radius of the disk.

Selon les variantes de réalisation, le support 1 peut être composé d'un matériau choisi parmi du papier, du carton, du verre, du plastique.According to the embodiments, the support 1 may be composed of a material selected from paper, cardboard, glass, plastic.

Selon le mode de réalisation préférentiel, le dispositif selon l'invention comprend un support 1 de forme rectangulaire dont les dimensions sont inférieures ou égales à 20 cm de long et à 6 cm de large. La réglette de lecture peut ainsi être aisément glissée dans la poche d'un vêtement de l'utilisateur, tel qu'un pantalon ou une blouse, afin d'être toujours à portée de main. According to the preferred embodiment, the device according to the invention comprises a support 1 of rectangular shape whose dimensions are less than or equal to 20 cm long and 6 cm large. The reading slider can thus be easily slipped into the pocket of a user's clothing, such as pants or a blouse, so that you always at hand.

Avantageusement, le support 1 présente un recto 5 et un verso 6 afin de permettre la réalisation de deux tables de lecture sur une seule réglette.Advantageously, the support 1 has a front 5 and a back 6 to allow the realization of two reading tables on a single ruler.

En effet, chaque face 5 et 6 du support 1 comporte une table de valeurs correspondant respectivement à des valeurs d'autonomie d'oxygène en fonction de la pression P restante dans la bouteille et du débit D pour deux capacités de bouteille différentes. Ainsi, par exemple, le recto présente un tableau de valeurs pour une bouteille de 1m3, soit de 5 litres, et le verso présente le même tableau pour une bouteille d'oxygène de 3 m3, soit de 15 litres.Indeed, each face 5 and 6 of the support 1 comprises a table of values respectively corresponding to values of autonomy of oxygen as a function of the pressure P remaining in the bottle and the flow rate D for two different bottle capacities. Thus, for example, the front side presents a table of values for a bottle of 1m 3 , that is to say 5 liters, and the reverse side presents the same table for a bottle of oxygen of 3 m 3 , or 15 liters.

Un curseur 2 muni d'une fenêtre de lecture 3 est apte à se déplacer le long du support 1 entre deux butées 4.A cursor 2 provided with a reading window 3 is able to move along the support 1 between two stops 4.

Selon un mode de réalisation préférentiel, le curseur 2 comprend deux colonnes, une première colonne sur laquelle sont reportées les différentes valeurs de pression P restante dans la bouteille, et une deuxième colonne consistant dans une fenêtre de lecture 3.According to a preferred embodiment, the slider 2 includes two columns, a first column on which are reported the different values of P pressure remaining in the bottle, and a second column consisting of a read window 3.

Pour connaítre l'autonomie d'oxygène, l'utilisateur doit tout d'abord lire la pression indiquée sur le manomètre de la bouteille. Il doit ensuite décider et/ou appliquer un débit d'oxygène D en sortie de la bouteille, puis il adresse le curseur 2 sur la table de valeurs du support matériel 1.To know the autonomy of oxygen, the user must first read the pressure indicated on the gauge of the bottle. He must then decide and / or apply a flow of oxygen D at the outlet of the bottle and then he's pointing cursor 2 at the table of hardware support values 1.

L'utilisateur place donc la fenêtre 3 du curseur 2 sur la colonne du débit D préalablement déterminé, puis il trouve, sur le curseur 2, la ligne correspondante à la pression d'oxygène P indiquée par le manomètre, et peut directement lire, sur la même ligne et dans la colonne de la fenêtre 3 le temps d'oxygène restant. The user therefore places the window 3 of the cursor 2 on the column of flow D determined beforehand, then he finds, on the cursor 2, the line corresponding to the oxygen pressure P indicated by the manometer, and can read directly, on the same line and in the column of the window 3 the remaining oxygen time.

Les temps d'autonomie indiqués dans les tableaux peuvent avantageusement tenir compte de la marge de sécurité de 10% retranchée au temps théorique.The times of autonomy indicated in the tables can advantageously take into account the margin of security of 10% deducted at the theoretical time.

Le dispositif selon l'invention permet ainsi une lecture directe et rapide qui éradique tout risque d'erreur lié à un mauvais calcul.The device according to the invention thus allows a direct and rapid reading that eradicates all risk of error related to a miscalculation.

En outre, si le débit d'oxygène D à fournir devait changer, la nouvelle autonomie serait rapidement connue par simple déplacement du curseur 2 pour placer la fenêtre 3 dans la colonne correspondante au nouveau débit D.In addition, if the oxygen flow D to be supplied change, the new autonomy would be quickly known by simply moving the cursor 2 to place the window 3 in the column corresponding to the new flow D.

Les butées 4 encadrent le support 1. Elles permettent d'une part de maintenir le curseur 2 sur le support 1 de la réglette, et d'autre part elles peuvent avantageusement servir de support à des informations diverses telles que des instructions ou des indentifiants.The stops 4 frame the support 1. They on the one hand to maintain the cursor 2 on the support 1 of the slide, and secondly they can advantageously serve as a support for information various such as instructions or indentifiants.

Selon une particularité de l'invention, les tableaux de valeurs d'autonomie sont rendus plus lisibles par des codes couleurs permettant de repérer certaines valeurs cruciales. Il est ainsi possible d'anticiper un changement de bouteille par exemple.According to a feature of the invention, the tables of autonomy values are made more readable by color codes to identify some crucial values. It is thus possible to anticipate a change of bottle for example.

Dans une variante de réalisation de l'invention, illustré sur la figure 4, le dispositif d'acquisition d'une valeur d'autonomie d'oxygène peut être constitué par un dispositif électronique.In an alternative embodiment of the invention, illustrated in FIG. 4, the acquisition device a value of oxygen autonomy can be constituted by an electronic device.

Dans une telle variante, le support 1 est un support de mémorisation composée d'au moins une puce de circuit intégré. Le support 1 électronique comporte au moins une table de valeurs correspondant à une capacité donnée de bouteille d'oxygène, par exemple 1m3, et à une réserve de sécurité donnée, par exemple 10%. In such a variant, the support 1 is a storage medium composed of at least one integrated circuit chip. The electronic support 1 comprises at least one table of values corresponding to a given oxygen bottle capacity, for example 1m 3 , and to a given safety reserve, for example 10%.

Néanmoins, le support 1 électronique peut avantageusement comporter une pluralité de tables de valeurs correspondant à une pluralité de capacités de bouteille avec une pluralité de réserves de sécurité respectives.Nevertheless, the electronic support 1 can advantageously comprise a plurality of tables of values corresponding to a plurality of bottle with a plurality of safety reserves respectively.

Le dispositif selon l'invention peut alors présenter la forme générale d'une calculatrice électronique avec une fenêtre de lecture 3 et des touches de commandes 10.The device according to the invention can then present the general form of a calculator electronic device with a reading window 3 and control keys 10.

Les touches de commande 10 permettent de réaliser un adressage du support de mémorisation 1 par le contenu en positionnant un curseur de lecture 2 sur la case mémoire correspondante à la valeur recherchée. Le curseur de lecture 2 est alors constitué par un dispositif d'adressage d'une mémoire par le contenu, tel que cela est connu en électronique.The control keys 10 make it possible to realize an addressing of the storage medium 1 by the content by positioning a playback slider 2 on the memory box corresponding to the desired value. The read slider 2 is then constituted by a device for addressing a memory by the content, as is known in electronics.

Ainsi, une touche de commande 11 peut permettre de sélectionner la capacité de bouteille utilisée, puis deux autre touches 12, 13 permettent d'indiquer, à travers un clavier numéroté 14, les valeurs respectives de pression P de la bouteille et de débit D souhaité.Thus, a control key 11 can make it possible to select the bottle capacity used, then two other keys 12, 13 make it possible to indicate, through a keyboard numbered 14, the respective values pressure P bottle and D flow desired.

Enfin, une autre touche de commande 15 peut permettre de sélectionner la réserve de sécurité souhaitée, de 10% à 30% selon les applications.Finally, another control key 15 can allow to select the security reserve desired, from 10% to 30% depending on the applications.

Claims (14)

  1. Portable device for acquiring an autonomy value for the oxygen contained in a bottle, given constant external pressure, whose features include a support (1) bearing at least one table of values addressed by a cursor (2) according to the bottle's internal pressure P and fixed flow rate D, and a reading window (3) directly indicating the bottle's oxygen autonomy value for that given internal pressure P and flow rate D, and such that this device is independent from the bottle.
  2. Device as in claim 1, with characteristics such that the support (1) is a material support, the cursor (2) is a mobile moving on the support (1), the reading window (3) is joined to the cursor (2).
  3. Device as in claim 2, with characteristics such that the support (1) presents a front (5) and a back (6), each side (5, 6) being respectively provided with a table of values for different bottle capacities.
  4. Device as in claim 3, with characteristics such that the front (5) shows a table of oxygen autonomy values for a bottle with a capacity of one cubic metre and the back (6) shows a table of oxygen autonomy values for a bottle with a capacity of three cubic metres.
  5. Device as in any one of the claims 2 to 4, with characteristics such that certain crucial values in the tables are indicated by a colour code.
  6. Device as in any one of the claims 2 to 5, with characteristics such that the support (1) has the rectangular shape of a ruler, with the cursor (2) moving longitudinally between two end stops (4).
  7. Device as in claim 6, with characteristics such that end stops (4) are suitable for receiving a distinctive symbol and/or information.
  8. Device as in any one of the claims 2 to 5, with characteristics such that the support (1) has a disc shape, with the cursor (2) moving around the disc.
  9. Device as in any one of the preceding claims, with characteristics such that the support (1) is made from material chosen from paper, cardboard, glass and plastic.
  10. Device as in claim 1, with characteristics such that the support (1) is an electronic recording support, with the cursor (2) controlled by an program that addresses the recording support (1) by the contents and the oxygen autonomy value digitally displayed in the reading window (3).
  11. Device as in claim 10, with characteristics such that the recording support (1) has a number of value tables corresponding respectively to different bottle capacities.
  12. Device as in any one of the claims 10 to 11, with characteristics such that the recording support (1) has a number of value tables corresponding respectively to different safety reserves.
  13. Device as in any one of the preceding claims, with characteristics such that the internal pressure P given is read in a pressure gauge fitted on the oxygen bottle.
  14. Device as in any one of the preceding claims, with characteristics such that the flow rate D, fixed by the user, determines the cursor's (2) position on the support (1).
EP00401848A 1999-06-28 2000-06-28 Portable device for acquisition of oxygen autonomy Expired - Lifetime EP1065432B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9908247A FR2795547B1 (en) 1999-06-28 1999-06-28 DEVICE FOR ACQUIRING AN OXYGEN AUTONOMY VALUE
FR9908247 1999-06-28

Publications (2)

Publication Number Publication Date
EP1065432A1 EP1065432A1 (en) 2001-01-03
EP1065432B1 true EP1065432B1 (en) 2005-03-16

Family

ID=9547388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00401848A Expired - Lifetime EP1065432B1 (en) 1999-06-28 2000-06-28 Portable device for acquisition of oxygen autonomy

Country Status (4)

Country Link
EP (1) EP1065432B1 (en)
AT (1) ATE291198T1 (en)
DE (1) DE60018641D1 (en)
FR (1) FR2795547B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111580594A (en) * 2020-04-29 2020-08-25 杭州市中医院 Oxygen consumption assessment dial plate for transfer breathing machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3670575A (en) * 1971-02-19 1972-06-20 Bruce D Emerick Indicating device for continuously indicating time to depletion of pressure tanks in use
US3784093A (en) * 1972-10-02 1974-01-08 K Bennett Factormatic slide rule
IT7820453V0 (en) * 1978-01-11 1978-01-11 Bina Alido SLIDING CARD DEVICE FOR READING THE PITAGORIC TABLE AND CALCULATING EQUIVALENCES.
US4835371A (en) * 1987-03-02 1989-05-30 Rogers Raymond E Diving computer
US4876903A (en) * 1988-01-11 1989-10-31 Budinger William D Method and apparatus for determination and display of critical gas supply information
GB2311015B (en) * 1996-03-13 2000-05-03 Cohen Ellis B Respiratory monitors for breathing apparatus
JP3378142B2 (en) * 1996-05-10 2003-02-17 帝人株式会社 Respiratory synchronization oxygen supply device

Also Published As

Publication number Publication date
DE60018641D1 (en) 2005-04-21
FR2795547B1 (en) 2002-02-01
EP1065432A1 (en) 2001-01-03
ATE291198T1 (en) 2005-04-15
FR2795547A1 (en) 2000-12-29

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