FR2478812A1 - Pressure variation monitor for surgical drainage tube - comprises thermoplastics bellows in path of tube to provide visual pressure indication by state of deformity - Google Patents
Pressure variation monitor for surgical drainage tube - comprises thermoplastics bellows in path of tube to provide visual pressure indication by state of deformity Download PDFInfo
- Publication number
- FR2478812A1 FR2478812A1 FR8006555A FR8006555A FR2478812A1 FR 2478812 A1 FR2478812 A1 FR 2478812A1 FR 8006555 A FR8006555 A FR 8006555A FR 8006555 A FR8006555 A FR 8006555A FR 2478812 A1 FR2478812 A1 FR 2478812A1
- Authority
- FR
- France
- Prior art keywords
- tube
- bellows
- deformity
- path
- vacuum
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/06—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the bellows type
- G01L7/061—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the bellows type construction or mounting of bellows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/022—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges constructional details, e.g. mounting of elastically-deformable gauges
Abstract
Description
La prosente invention concerne les dispositifs destinés au coutrôele des variations de pression dans un tube contenant un fluide0
Elle concerne en particulier le tube raccordant un drain chirurgical au récipient sous dépression qui recueille les exsudats. Ces drains sont utilisés pour le drainage et la ferme ture des plaies sous dépression.The present invention relates to devices intended for the control of pressure variations in a tube containing a fluid.
It relates in particular to the tube connecting a surgical drain to the vacuum container which collects the exudates. These drains are used for drainage and closing of wounds under depression.
Les dispositifs connus de ce genre sont généralement conssitués d'une enveloppe souple aStectant diverses formes, notam- nient celles d'un soufflet ou d'un baîlonnet, sphérique ou allen- gé, adaptés sur une dérivation de la tubulure, du bouchon ou de la paroi du récipient. Known devices of this kind are generally constituted by a flexible envelope aStecting various shapes, in particular those of a bellows or a bonnet, spherical or light, adapted on a bypass of the tubing, the plug or the wall of the container.
Cette enveloppe se comprime lorsque le tube est sous dépression et reprend sa forme initiale à la pression atmosphé riqueO
Un autre dispositif couramment utilisé est constitué par un bouchon en caoutchouc comportant deux parties minces formant membranes, lorsque le récipient est sous vide les membranes déplacent chacune un indexo ceux-ci se croisent sous dépression et reprennent une position parallèle à la pression atmosphérique.This envelope compresses when the tube is under vacuum and resumes its initial shape at atmospheric pressure O
Another commonly used device consists of a rubber stopper comprising two thin parts forming membranes, when the container is under vacuum the membranes each move an indexo these intersect under vacuum and take up a position parallel to atmospheric pressure.
Ce bouchon est d'une fabrication coùteuse qui se justifie seulement par le fait qui peut-être réutilisé plusieurs fois mais il nécessite un nettoyage soigné et la stérilisation à chaque utilisation. This stopper is of a costly manufacture which is justified only by the fact that can be reused several times but it requires careful cleaning and sterilization with each use.
le coùt de cette opération s'ajoutant au prix d'origine élevé fait progressivement abandonner ce procédé en faveur de ceux qui sont cités plus haut, qui sont immédiatement utilisables. the cost of this operation added to the high original price gradually abandons this process in favor of those mentioned above, who are immediately usable.
Ceux-ci par contre ne sont absolument pas réutilisables car leur nettoyage est pratiquement impossible du fait de la dérivation nécessaire qui attire et retient une partie des exsudats,
Le dispositif suivant l'invention étant d'une grande simplicité, permet d'éviter ces inconvénients. Le prix de revient réduit le rend particulièrement économique pour l'usage unique tout en laissant la possibilité d'un nettoyage relativement aisé > si le service utilisateur jugeait le réemploi souhaitable.These on the other hand are absolutely not reusable because their cleaning is practically impossible because of the necessary bypass which attracts and retains a part of the exudates,
The device according to the invention being very simple, makes it possible to avoid these drawbacks. The reduced cost price makes it particularly economical for single use while leaving the possibility of relatively easy cleaning> if the user service deems reuse desirable.
Le dispositif, objet de l'invention comporte un renflement du tube en forme de soufflet qui se comprime lorsque le tube est sous dépression et reprend sa forme à la pression atmosphé rique, réalisant ainsi le contrôle du vide pour appréciation visuelle du changement de volumes
Ce contrôle est suffisant pour l'utilisation envisagée avec les drains chirurgicauK mais il est possible au moyen du dispositif objet de 11 invention d'obtenir, pour d'autres usages pouvant le nécessiter, une mesure précise en transmettant les mouvements du soufflet, freinés par un ressort étalonné, à une aiguille mobile devant un cadran gradué,
Sous cette forme9 il est possible d'utiliser le dispositif, objet de l'invention, pour mesurer des pressions tant positives que négatives d'un fluide, liquide ou gazeux, sans dérivation du flux0
Le dessin annexé illustre à titre d'exemple un mode de réalisation du dispositif conforme à la présente invention0
Selon une réalisation de l'invention (fige 1) le soufflet (1) est réalisé par soufflage d'une partie du tube (2), en matière plastique thermoformable, dans un moule, après chauffage préalable.The device which is the subject of the invention comprises a bulge in the bellows-shaped tube which compresses when the tube is under vacuum and resumes its shape at atmospheric pressure, thus achieving vacuum control for visual appreciation of the change in volumes.
This control is sufficient for the use envisaged with surgical drains, but it is possible by means of the device object of the invention to obtain, for other uses which may require it, a precise measurement by transmitting the movements of the bellows, braked by a calibrated spring, with a movable needle in front of a graduated dial,
In this form9 it is possible to use the device, object of the invention, to measure both positive and negative pressures of a fluid, liquid or gaseous, without diverting the flow0
The accompanying drawing illustrates by way of example an embodiment of the device according to the present invention.
According to one embodiment of the invention (FIG. 1) the bellows (1) is produced by blowing a part of the tube (2), made of thermoformable plastic, in a mold, after prior heating.
Selon une autre réalisation de l'invention (fige 2) le soufflet (1) est réalisé séparément en matière plastique appropriée, dans ce cas il est possible de prévoir pour les deux extrémités diverses formes pour faciliter l'adaptation de tubes (2) de plusieurs dimensions différentes, notamment une forme conique (3), des redans intérieurs et extérieurs (4) ou une aiguille figo 3 (5) pour percer le bouchon d'un flacon sous vide qui est un dispositif couramment utilisé pour le drainage chirurgicalO According to another embodiment of the invention (FIG. 2) the bellows (1) is made separately of suitable plastic material, in this case it is possible to provide for the two ends various shapes to facilitate the adaptation of tubes (2) of several different dimensions, in particular a conical shape (3), internal and external steps (4) or a figo needle 3 (5) for piercing the stopper of a vacuum flask which is a device commonly used for surgical drainageO
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8006555A FR2478812A1 (en) | 1980-03-20 | 1980-03-20 | Pressure variation monitor for surgical drainage tube - comprises thermoplastics bellows in path of tube to provide visual pressure indication by state of deformity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8006555A FR2478812A1 (en) | 1980-03-20 | 1980-03-20 | Pressure variation monitor for surgical drainage tube - comprises thermoplastics bellows in path of tube to provide visual pressure indication by state of deformity |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2478812A1 true FR2478812A1 (en) | 1981-09-25 |
FR2478812B1 FR2478812B1 (en) | 1983-05-27 |
Family
ID=9240041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8006555A Granted FR2478812A1 (en) | 1980-03-20 | 1980-03-20 | Pressure variation monitor for surgical drainage tube - comprises thermoplastics bellows in path of tube to provide visual pressure indication by state of deformity |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2478812A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1921001A (en) * | 1929-02-11 | 1933-08-08 | Ohlson Olof | Pressure gauge |
US2538785A (en) * | 1948-05-10 | 1951-01-23 | Horace E Karig | Apparatus for measuring jet reaction of a nozzle |
US2672889A (en) * | 1950-09-01 | 1954-03-23 | Grant A Swanson | Circuit controller |
FR1479548A (en) * | 1966-03-25 | 1967-05-05 | Instant connection pressure gauge | |
DE2533078A1 (en) * | 1975-07-24 | 1977-02-10 | Kromberg Ges Fuer Ingenieurlei | Indirectly coupled press. gauge for pipelines - has strain gauge clamped to pipe exterior to measure internal press. |
-
1980
- 1980-03-20 FR FR8006555A patent/FR2478812A1/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1921001A (en) * | 1929-02-11 | 1933-08-08 | Ohlson Olof | Pressure gauge |
US2538785A (en) * | 1948-05-10 | 1951-01-23 | Horace E Karig | Apparatus for measuring jet reaction of a nozzle |
US2672889A (en) * | 1950-09-01 | 1954-03-23 | Grant A Swanson | Circuit controller |
FR1479548A (en) * | 1966-03-25 | 1967-05-05 | Instant connection pressure gauge | |
DE2533078A1 (en) * | 1975-07-24 | 1977-02-10 | Kromberg Ges Fuer Ingenieurlei | Indirectly coupled press. gauge for pipelines - has strain gauge clamped to pipe exterior to measure internal press. |
Also Published As
Publication number | Publication date |
---|---|
FR2478812B1 (en) | 1983-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |