WO1987006453A1 - Fluid flow rate control device, prosthetic organ provided with such device and method for fabricating such device - Google Patents

Fluid flow rate control device, prosthetic organ provided with such device and method for fabricating such device Download PDF

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Publication number
WO1987006453A1
WO1987006453A1 PCT/FR1987/000136 FR8700136W WO8706453A1 WO 1987006453 A1 WO1987006453 A1 WO 1987006453A1 FR 8700136 W FR8700136 W FR 8700136W WO 8706453 A1 WO8706453 A1 WO 8706453A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve stem
valve
stem
channel
tube
Prior art date
Application number
PCT/FR1987/000136
Other languages
French (fr)
Inventor
Pierre Rey
Jacqueline Leandri
Clément Abbou
Alain Sezeur
Original Assignee
Centre National De La Recherche Scientifique (Cnrs
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR8605928A external-priority patent/FR2597748A2/en
Application filed by Centre National De La Recherche Scientifique (Cnrs filed Critical Centre National De La Recherche Scientifique (Cnrs
Publication of WO1987006453A1 publication Critical patent/WO1987006453A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
    • A61F2/0031—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra
    • A61F2/0036—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra implantable
    • A61F2/004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra implantable inflatable

Definitions

  • the present invention relates to a device for controlling the flow of a fluid, in particular a biological fluid.
  • a device for controlling the flow of a fluid which comprises a valve of the type sensitive only to the pressure obtained by manual deformation of at least one flexible activating balloon containing a fluid for controlling the valve, is described in the Application of French patent n ° 83 14607.
  • the valve that is the subject of this French Patent Application is produced by cooperation between a rod and a sheath in which the rod is tightly enclosed by any suitable clamping means, this clamping sheath being made of a flexible plastic material having a shrinkage upon polymerization and being intended to deviate from the rod which it envelops under the action of the pressure exerted by said control fluid during the deformation of the activating balloon which contains it.
  • the rod is advantageously provided with means intended to prevent its axial displacement under the action of the pressure of the control flui ⁇ authorizing the expansion of the sheath and therefore the opening of the valve.
  • the object of the present invention is to remedy this drawback so that the good performance of the valve is always ensured in response to each control action, even when its opening frequency is particularly low.
  • the present invention relates to a device for controlling the flow of a fluid, in particular a biological fluid, of the type comprising at least two flexible net balloons connected by a connection tube made of a flexible plastic material having a withdrawal from the polymerization, a valve system of the type sensitive only to the pressure resulting from the manual deformation of one of the above-mentioned balloons, which valve system comprises a rod tightly clamped, in the condition of rest, by any suitable tightening means, inside the above-mentioned connecting tube, which control device further comprises means capable of preventing the axial displacement of the valve stem along the connecting tube under the effect of said pressure, said control device being characterized in that the rod of said valve system comprises means for initiating the loosening, namely expansion or removal, the adite tight tightening sheath of this tig under the effect of the pressure of a fluid whose flow is controlled by said valve stem.
  • FIGS. 1a and 1b are two views in vertical elevation, partially in section and with partial cutaway, of the control device according to the invention, showing a non-limiting embodiment of the means for initiating the expansion of the tight tightening sheath of a rod which, in cooperation with this sheath, constitutes the device valve filled with a control fluid for the latter 2 shows an advantageous embodiment of the valve stem of the device according to the invention, also provided with means for initiating the expansion of the said tight tightening sheath;
  • FIG. 3 schematically represents a device for repeated injection of medication, of a type known per se, comprising in combination an injection site (intended to be implanted in the subcutaneous position) and a catheter (intended to be implanted in the therapeutic action zone), which injection device is capable of using the valve stem according to FIG. 2 and disposed at the distal end of the aforementioned catheter:
  • FIG. 4 represents a view in longitudinal section, partial and on a larger scale, corresponding to the area encircled and denoted by the letter W in FIG.
  • FIG. 3 Figures 5 to 6 show two alternative embodiments of the valve stem of Figure 2, as applied in particular to the injection device of Figure 3;
  • Figures 7 to 8 show another variant of the valve stem according to the invention limited to the positioning means of the latter;
  • Figures 9 and 10 are views in longitudinal and transverse section, respectively, (the cross section being made along the plane X) of another embodiment of réali ⁇ sation of the initiating means for loosening the sheath ser ⁇ rage surrounding the valve stem;
  • FIG. 11 is another variant of the means for initiating the loosening of said tightening sheath surrounding the valve stem,
  • FIG. 12 shows an alternative embodiment of the means for positioning the valve stem, alternative to those which are shown in Figures 1a, 1b and 7 to 8;
  • FIG. 13 illustrates yet another mode of realizing the means for initiating the loosening according to the invention.
  • FIG. 1a refers to an embodiment of the device for controlling the flow of a fluid, in particular a biological fluid, and in particular of the urine flow, of the type comprising a closed system filled with a fluid and comprising two flexible activating balloons A and B connected by a tube D, the wall of which directly and tightly squeezes a rod E inserted inside this tube, it being understood that the tightening of said rod E can be carried out by any means also ensuring the watertight separation between the flexible activating balloons, in the rest condition.
  • the axial displacement of the rod E in the tube D is prevented by equipping each of the ends of this rod E with a sphere s_, for example, as indicated in FIG. 1a, thus giving the rod a dumbbell configuration.
  • Figure 1b is an advantageous variant of the preferred embodiment illustrated in Figure la. This variant shows that the same result, namely maintaining the rod E in position, can also be obtained by connecting the tube D to each of two activating balloons A and B by a tube 1 ⁇ whose diameter is less than the diamè ⁇ be from tube D.
  • the two activating balloons and the tube D are made of all flexible plastic materials which exhibit a shrinkage during polymerization during hardening (preferably silicone or polyurethane in particular), the tube D tightly seals the rod
  • an increase in pressure causes the wall of the tube D to separate from the surface of the rod E and, consequently, the passage from the compressed fluid contained in balloon A to balloon B, where the fluid is stored.
  • the pressure on the balloon A is released, the fluid stored in B does not return spontaneously to A, owing to the fact that, if the latter tends to return to its initial shape, the tube D nevertheless opposes this movement in tightening tightly on the rod E, which causes a depression in the balloon A and therefore a suction of fluid from the balloon A to the balloon B, namely the deflation of the first balloon A.
  • an increase pressure in balloon B causes the reverse phenomenon and the transfer of fluid from B to A, and therefore deflation of balloon B and inflation of balloon A.
  • the shape of one of the two net balloons can be a priori any, in particular ⁇ spherical, annular or other, but in any case such that it can adapt to the different applications which the control device according to the invention is capable of, while the shape of the other balloon , (therefore that of the balloon A) must be able to adapt, in the state of rest, to the shape of the conduit which it must close, in order to be able to fulfill the role of balloon both activator and obturator of the conduit whose flow must be ordered.
  • the valve stem E comprises means for initiating the loosening, namely expansion or spacing, of its tight clamping sheath D, capable of ensuring the operation of said valve system whatever that is the frequency of control of this valve, namely in spite of the natural process of aging of the elastomer of which the sheath is made up D.
  • valve stem E has, in each of the two embodiments illustrated in FIGS. 1a and 1b, and at each of its ends, an axial blind channel which is in communication with each other. tion with the control fluid contained in each of the two balloons A and B as well as with at least one channel opening onto the external surface of the rod E at the corresponding end of the internal surface of the tight tightening sheath D .
  • the channel emerging at the external surface of the rod E can have a path a priori arbitrary, for example spiral or other.
  • the means for initiating the loosening of the tightening sheath of the valve stem are not limited to the embodiments of FIGS. 1 to 6.
  • at least one groove can be provided
  • FIG. 9 Figures 9 (and 10) and 11 show two advantageous arrangements constituted by 4 longitudinal grooves g_ arranged at 90 ° from each other on the valve stem E. and by a helical groove g, formed on the valve stem E 5 , respecti ⁇ vement.
  • the number of longitudinal grooves g_ and the angular spacing between two of these consecutive grooves are not limited to 4 and 90 °, respectively.
  • FIG. 13 represents another variant of the means for initiating the loosening of the catheter J which are constituted by an axial channel a communicating with a radial channel r_ which in turn communicates with an annular groove g_ ⁇ formed on the surface of the rod E_ .
  • the pressure of the control fluid contained in each of the two balloons A and B is sufficient for the jet of fluid, which follows the axial channel a and the channel or channels (possibly radial or radial) opening to the external surface of the rod E, allows the localized spacing of the tight clamping sheath D by relative to this rod, thus allowing the passage of the control fluid between the external surface of said valve stem and the internal surface of its tightening sheath.
  • FIG. 2 represents a mode of realization of the valve stem E, which - in accordance with the variant illustrated in the appended FIG. 1b as well as in FIG. 1b of French Patent Application n ° 83 14607 - has no bulges at its ends.
  • the valve stem is constituted by a portion of tube E, having an intermediate partition £ delimiting, in cooperation with the wall of this portion of tube, two blind axial channels a, located on both sides with respect to said partition c.
  • the wall of the tube portion E. is provided with at least one orifice o formed on either side of the transverse partition c.
  • the orifices put in communication the axial channels bor ⁇ a, (which are intended in their turn to communicate with the control fluid, the flow of which is controlled by the valve) with the external surface of the valve stem.
  • said channels a. and the orifices o constituting the means for initiating the loosening of a sheath (not shown in FIG. 2) enveloping the valve E 1 .
  • This valve - which has been shown so that one half, symmetrical with respect to the partition c, is dotted - applies to the case where the flow of the control fluid is bilateral, that is to say that it takes place in both directions, in relation to the application to Figures la and lb.
  • the bilateral flow of the control fluid is not limiting, just as this fluid is not necessarily limited to exerting, by the action of its pressure, a control function of the rod of valve according to the invention: it can also exert a therapeutic action via the valve for controlling its flow, for example in one direction only.
  • valve of figure 2 and more precisely one of the two halves E_ of the valve E, described above - which is the only functional part usable in the case of flow unitaleral of said fluid with therapeutic properties - is susceptible of an original and immediate application to devices for repeated injection of medication, in unit doses and ⁇ a frequency which depends on the needs of the therapeutic treatment of a given patient.
  • an external means of supplying this site with said drug comprising in particular a needle g_ * of pi ⁇ q re of said site connected to a syringe (not shown) or to a pump (also not shown), such as a pornp *; with rollers or the like, and -
  • Figures 5 and 6 essentially show alternative embodiments of the device shown in Figures 3 and 4 and show a thinned area j. 1 & extré- wall of the distal catheter mite J.
  • This thinning is advantageous because the drug pressure is not to be high (such as, for example, in the case where the injection device is connected to a pump with rollers), so as to reduce the resistance to loosening of the catheter wall.
  • FIGS. 7 and 8 show means for holding in position the stem of the pope which are alternative to the bulges at the end as shown in FIG. 1a (see also French patent application n ° 83 14607).
  • These alternative means are constituted by a tube por ⁇ , which abuts against a ren ⁇ trant shoulder formed in the catheter J, and by a wire f_ connecting the tube portion t to the valve stem E, and ⁇ 2 .
  • This wire f_ and this portion of tube t are preferably made of stainless steel or plastic.
  • Means for holding the valve stem in position are shown in FIG. 12. This shows lips L of blocking of the valve stem E g , provided with means for initiating the loosening of the catheter J constituted by a blind axial channel a communicating with two radial channels r. and r-.
  • Said locking lips L protrude on either side of the valve rod E g from the internal wall of the catheter J, thus delimiting for this rod E g a housing disposed at the distal end of the catheter.

Abstract

Device for controlling the flow of a fluid, particularly a biological fluid, characterized in that the stem (E) of the valve system (E, D) comprises means for starting the loosening of the sealed tightening sleeve (D) of the valve stem (E), under the effect of the pressure of the fluid of which the flow is controlled by said valve stem. The invention also proposes alternatives of the valve stem, each of them being provided with the above mentioned loosening starting means. Some of those alternatives may be applied to devices for repeatedly injecting drugs. Application to prosthetic organs as well as to therapeutic treatment devices.

Description

DISPOSITIF DE COMMANDE DU DEBIT D'UN FLUIDE, ORGANE PROTHETIQUE EQUIPE DE CE DISPOSITIF ET PROCEDE DE FABRICATION D'UN TEL DISPOSITIF.DEVICE FOR CONTROLLING THE FLOW OF A FLUID, PROSTHETIC MEMBER EQUIPPED WITH THIS DEVICE AND METHOD FOR MANUFACTURING SUCH A DEVICE.
La présente invention est relative à un disposi- tif de commande de l'écoulement d'un fluide, notamment d'un fluide biologique.The present invention relates to a device for controlling the flow of a fluid, in particular a biological fluid.
Un dispositif de commande de l'écoulement d'un fluide, qui comporte une soupape du type sensible uniquement à la pression obtenue par déformation manuelle d'au moins un ballonnet souple activateur contenant un fluide de commande de la soupape,est décrit dans la Demande de Brevet français n° 83 14607.A device for controlling the flow of a fluid, which comprises a valve of the type sensitive only to the pressure obtained by manual deformation of at least one flexible activating balloon containing a fluid for controlling the valve, is described in the Application of French patent n ° 83 14607.
La soupape objet de cette Demande de Brevet fran¬ çais est réalisée par coopération entre une tige et une gaine dans laquelle la tige est enserrée de façon êtanche par tout moyen de serrage approprié, cette gaine de serrage étant réalisée en une matière plastique souple présentant un retrait à la polymérisation et étant destinée à s'écar¬ ter de la tige qu'elle enveloppe sous l'action de la pres- sion exercée par ledit fluide de commande lors de la défor¬ mation du ballonnet activateur qui le contient. La tige est avantageusement pourvue d'un moyen destiné à empêcher son déplacement axial sous l'action de la pression du flui¬ de de commande autorisant la dilatation de la gaine et donc l'ouverture de la soupape. L'utilisation de cette soupape dans des prothèses urétraies de type interchangeable, à usage masculin et fémi¬ nin, qui sont destinées à être mises en place sans chirur¬ gie et qui constituent aussi un autre objet de la Demande de Brevet trançais n° 83 14607 susdite a toutefois montré que parfois,l'ouverture de la soupape par dilatation de ladite gaine de serrage de ladite tige sous l'action de la pres¬ sion de commande n'a pas lieu ou a lieu avec difficulté, notammentà cause de l'adhérisation de l'élastomère de sili- cone (dont se compose la gaine de serrage) contre cette der nière, adhérisation qui est due au processus naturel de vieillissement des élastomères de silicones et qui est ac¬ centuée lorsque ces élastomères restent longtemps inactifs.The valve that is the subject of this French Patent Application is produced by cooperation between a rod and a sheath in which the rod is tightly enclosed by any suitable clamping means, this clamping sheath being made of a flexible plastic material having a shrinkage upon polymerization and being intended to deviate from the rod which it envelops under the action of the pressure exerted by said control fluid during the deformation of the activating balloon which contains it. The rod is advantageously provided with means intended to prevent its axial displacement under the action of the pressure of the control flui¬ authorizing the expansion of the sheath and therefore the opening of the valve. The use of this valve in interchangeable type urethral prostheses, for male and female use, which are intended to be installed without surgery and which also constitute another object of the French Patent Application No. 83 14607 aforesaid has however shown that sometimes, the opening of the valve by expansion of said tightening sheath of said rod under the action of the control pressure does not take place or takes place with difficulty, in particular because of the adhesion of the silicone elastomer (of which the tightening sheath is composed) against the latter, adhesion which is due to the natural aging process of the silicone elastomers and which is accentuated when these elastomers remain inactive for a long time.
La présente invention a pour but de remédier à ce inconvénient pour que les bonnes performances de la soupape soient toujours assurées en réponse â chaque action de com¬ mande, même quand sa fréquence d'ouverture est particuliè¬ rement faible.The object of the present invention is to remedy this drawback so that the good performance of the valve is always ensured in response to each control action, even when its opening frequency is particularly low.
Figure imgf000004_0001
La présente invention a pour objet un dispositif de commande de l'écoulement d'un fluide, notamment d'un fluide biologique, du type comportant au moins deux ballon¬ nets souples reliés par un tube de liaison réalisé en une matière plastique souple présentant un retrait à la poly¬ mérisation, un système de soupape du type sensible unique¬ ment à la pression résultant de la déformation manuelle de l'un des ballonnets susdits, lequel système de soupape comporte une tige enserrée de façon êtanche, en condition de repos, par tout moyen de serrage approprié, à l'inté¬ rieur du tube de liaison susdit, lequel dispositif de commande comporte en outre un moyen apte à empêcher le déplacement axial de la tige de soupape le long du tube de liaison sous l'effet de la pression susdite, ledit dispositif de commande étant caractérisé en ce que la tige dudit système de soupape comporte des moyens d'amorce du desserrage, à savoir de la dilatation ou de l'é cartement, de ladite gaine de serrage êtanche de cette tig sous l'effet de la pression d'un fluide dont l'écoulement est contrôlé par ladite tige de soupape.
Figure imgf000004_0001
The present invention relates to a device for controlling the flow of a fluid, in particular a biological fluid, of the type comprising at least two flexible net balloons connected by a connection tube made of a flexible plastic material having a withdrawal from the polymerization, a valve system of the type sensitive only to the pressure resulting from the manual deformation of one of the above-mentioned balloons, which valve system comprises a rod tightly clamped, in the condition of rest, by any suitable tightening means, inside the above-mentioned connecting tube, which control device further comprises means capable of preventing the axial displacement of the valve stem along the connecting tube under the effect of said pressure, said control device being characterized in that the rod of said valve system comprises means for initiating the loosening, namely expansion or removal, the adite tight tightening sheath of this tig under the effect of the pressure of a fluid whose flow is controlled by said valve stem.
Outre les dispositions qui précèdent, l'invention comprend encore d'autres dispositions, qui ressortiront de la description qui va suivre.In addition to the foregoing provisions, the invention also comprises other provisions, which will emerge from the description which follows.
L'invention sera mieux comprise à l'aide du compl ment de description qui va suivre, qui se réfère aux dessin annexés dans lesquels : les figures la et lb sont deux vues en élévation verticale, partiellement en coupe et avec arrachements par¬ tiels, du dispositif de commande selon l'invention,montrant un mode de réalisation non limitatif des moyens d'amorce de la dilatation de la gaine de serrage êtanche d'une tige qui, en coopération avec cette gaine, constitue la soupape dispositif rempli d'un fluide de commande de cette dernière la figure 2 représente un mode de réalisation avan¬ tageux de la tige de soupape du dispositif selon l'invention, lui aussi pourvu des moyens d'amorce de la dilatation de la¬ dite gaine de serrage êtanche ; la figure 3 représente de façon schématique un dis¬ positif d'injection répétée de médicament, de type connu en soi, comportant en combinaison un site d'injection(destiné à être implanté en position sous-cutanée) et un cathéter (destiné à être implanté dans la zone d'action thérapeuti- que), lequel dispositif d'injection est susceptible d'utili¬ ser la tige de soupape conforme à la figure 2 et disposée à l'extrémité distale du cathéter précité : la figure 4 représente une vue en coupe longitu¬ dinale, partielle et à plus grande échelle, correspondant à la zone encerclée et dénotée par la lettre W à la figure 3 ; les figures 5 à 6 représentent deux variantes de réalisation de la tige de soupape de la figure 2, telle qu'appliquée en particulier au dispositif d'injection de la figure 3 ; les figures 7 à 8 représentent une autre variante de la tige de soupape selon l'invention limitativement aux moyens de positionnement de cette dernière; les figures 9 et 10 sont des vues en coupe longitud nale et transversale, respectivement, (la coupe transversale étant effectuée suivant le plan X) d'un autre mode de réali¬ sation des moyens d'amorce du desserrage de la gaine de ser¬ rage qui entoure la tige de soupape; la figure 11 est une autre variante desaits moyens d'amorce du desserrage de ladite gaine de serrage entourant l tige de soupape, la figure 12 montre une variante de réalisation des moyens de positionnement de la tige de soupape, alternatifs par rapport à ceux qui sont représentés aux figures 1a, 1b e 7 à 8; la figure 13 illustre encore un autre mode de réali¬ sation des moyens d'amorce du desserrage selon l'invention.The invention will be better understood using the additional description which follows, which refers to the accompanying drawings in which: FIGS. 1a and 1b are two views in vertical elevation, partially in section and with partial cutaway, of the control device according to the invention, showing a non-limiting embodiment of the means for initiating the expansion of the tight tightening sheath of a rod which, in cooperation with this sheath, constitutes the device valve filled with a control fluid for the latter 2 shows an advantageous embodiment of the valve stem of the device according to the invention, also provided with means for initiating the expansion of the said tight tightening sheath; FIG. 3 schematically represents a device for repeated injection of medication, of a type known per se, comprising in combination an injection site (intended to be implanted in the subcutaneous position) and a catheter (intended to be implanted in the therapeutic action zone), which injection device is capable of using the valve stem according to FIG. 2 and disposed at the distal end of the aforementioned catheter: FIG. 4 represents a view in longitudinal section, partial and on a larger scale, corresponding to the area encircled and denoted by the letter W in FIG. 3; Figures 5 to 6 show two alternative embodiments of the valve stem of Figure 2, as applied in particular to the injection device of Figure 3; Figures 7 to 8 show another variant of the valve stem according to the invention limited to the positioning means of the latter; Figures 9 and 10 are views in longitudinal and transverse section, respectively, (the cross section being made along the plane X) of another embodiment of réali¬ sation of the initiating means for loosening the sheath ser¬ rage surrounding the valve stem; FIG. 11 is another variant of the means for initiating the loosening of said tightening sheath surrounding the valve stem, FIG. 12 shows an alternative embodiment of the means for positioning the valve stem, alternative to those which are shown in Figures 1a, 1b and 7 to 8; FIG. 13 illustrates yet another mode of realizing the means for initiating the loosening according to the invention.
Il doit être bien entendu, toutefois, que ces des¬ sins et les parties descriptives correspondantes, sont donnés uniquement à titre d'illustration de l'objet de l'invention, dont ils ne constituent en aucune manière une limitation.It should be understood, however, that these drawings and the corresponding descriptive parts are given solely by way of illustration of the subject of the invention, of which they do not in any way constitute a limitation.
La figure 1a se réfère à un mode de réalisation du dispositif de commande de l'écoulement d'un fluide, notamment d'un fluide biologique,et en particulier de l'écoulement uri- naire, du type comprenant un système fermé rempli d'un fluide et comportant deux ballonnets activateurs A et B souples reliés par un tube D dont la paroi serre directe¬ ment et de façon êtanche une tige E insérée à l'intérieur de ce tube, étant entendu que le serrage de ladite tige E peut être réalisé par tous moyens assurant également la séparation êtanche entre les ballonnets activateurs souples, en condition de repos.FIG. 1a refers to an embodiment of the device for controlling the flow of a fluid, in particular a biological fluid, and in particular of the urine flow, of the type comprising a closed system filled with a fluid and comprising two flexible activating balloons A and B connected by a tube D, the wall of which directly and tightly squeezes a rod E inserted inside this tube, it being understood that the tightening of said rod E can be carried out by any means also ensuring the watertight separation between the flexible activating balloons, in the rest condition.
Le déplacement axial de la tige E dans le tube D est empêché en équipant chacune des extrémités de cette tige E d'une sphère s_, par exemple, comme indiqué à la figure 1a, donnant ainsi à la tige une configuration en haltère.The axial displacement of the rod E in the tube D is prevented by equipping each of the ends of this rod E with a sphere s_, for example, as indicated in FIG. 1a, thus giving the rod a dumbbell configuration.
La figure 1b est une variante avantageuse du mode de réalisation préféré illustré par la figure la. Cette variante montre que le même résultat, à savoir le maintien en position de la tige E, peut être obtenu aussi en reliant le tube D à chacun de deux ballonnets activateurs A et B par une tubulure 1^ dont le diamètre est inférieur au diamè¬ tre du tube D.Figure 1b is an advantageous variant of the preferred embodiment illustrated in Figure la. This variant shows that the same result, namely maintaining the rod E in position, can also be obtained by connecting the tube D to each of two activating balloons A and B by a tube 1 ^ whose diameter is less than the diamè¬ be from tube D.
Etant donné que les deux ballonnets activateurs et le tube D sont réalisés en toutes matières plastiques souples qui présentent un retrait à la polymérisation lors du durcissement (en silicone de préférence ou en polyuré- thane notamment) ,le tube D serre de façon êtanche la tigeSince the two activating balloons and the tube D are made of all flexible plastic materials which exhibit a shrinkage during polymerization during hardening (preferably silicone or polyurethane in particular), the tube D tightly seals the rod
E qu'il contient,assurant ainsi la séparation êtanche des deux ballonnets Aet B, dont le volume est maximumenpositionde repos. La coopération entre la tige E et la gaine D de serrage êtanche (en condition de repos) définit donc un système de soupape conforme aux dispositions objet de la Demande de Brevet français 83 14607. Le principe de fonctionnement dudispositif de commande tel qu'exposé dans ladite Demande deBrevet français repose sur 1•étanchéité entre les deux ballonnets activateurs A et B, ainsi que sur l'élasticité de la paroi du tube D et sur la tendance des ballonnets A et B à reprendre leur forme d'origine dès qu'ils ne sont pas sollicités. De fa¬ çon plus précise, une augmentation de pression,par exemple dans le ballonnet A, obtenue par appui manuel ou digital, provoque l'écartement de la paroi du tube D de la surface de la tige E et, par conséquent, le passage du fluide com- primé contenu dans le ballonnet A vers le ballonnet B, où le fluide est stocké. Au moment du relâchement de l'appui sur le ballonnet A, le fluide stocké en B ne revient pas spontanément vers A, du fait que, si ce dernier tend à reprendre sa forme initiale, le tube D s'oppose toutefois à ce mouvement en se resserrant de façon êtanche sur la tige E, ce qui provoque une dépression dans le ballonnet A et donc une aspiration de fluide du ballonnet A vers le ballonnet B, à savoir la déflation du premier ballonnet A. Il va de soi qu'une augmentation de pression dans le ballonnet B provoque le phénomène inverse et le transfert du fluide de B vers A, et donc la déflation du ballonnet B et l'inflation du ballonnet A.E it contains, thus ensuring the watertight separation of the two balloons A and B, the volume of which is maximum in the rest position. The cooperation between the rod E and the tight tightening sheath D (in rest condition) therefore defines a valve system in accordance with the provisions object of French Patent Application 83 14607. The operating principle of the control device as set out in said French Patent Application is based on 1 • tightness between the two activating balloons A and B, as well as on the elasticity of the wall of the tube D and on the tendency of the balloons A and B to return to their original shape as soon as they are not requested. More specifically, an increase in pressure, for example in the balloon A, obtained by manual or digital support, causes the wall of the tube D to separate from the surface of the rod E and, consequently, the passage from the compressed fluid contained in balloon A to balloon B, where the fluid is stored. When the pressure on the balloon A is released, the fluid stored in B does not return spontaneously to A, owing to the fact that, if the latter tends to return to its initial shape, the tube D nevertheless opposes this movement in tightening tightly on the rod E, which causes a depression in the balloon A and therefore a suction of fluid from the balloon A to the balloon B, namely the deflation of the first balloon A. It goes without saying that an increase pressure in balloon B causes the reverse phenomenon and the transfer of fluid from B to A, and therefore deflation of balloon B and inflation of balloon A.
Sur la base de ce qui précède, on comprend très bien que si, par exemple, le ballonnet activateur A est inséré dans un conduit, il est possible d'ouvrir et d'ob¬ turer, respectivement, la lumière de ce conduit en pro¬ cédant de la manière décrite plus haut, à savoir en com¬ primant alternativement les deux ballonnets activateurs A et B : il va de soi que la forme d'un des deux ballon- nets (par exemple celle du ballonnet B) peut être a priori quelconque, notamment βphérique, annulaire ou autre, mais de toutes façons telle qu'elle puisse β'adapter aux différentes applications dont est susceptible le disposi¬ tif de commande conforme è l'invention, tandis que la for- me de l'autre ballonnet, ( donc celle du ballonnet A) doit pouvoir s'adapter, à l'état de repos, à la forme du conduit qu'il doit obturer, pour pouvoir remplir le rôle de ballonnet à la fois activateur et obturateur du conduit dont l'écoulement doit être commandé. Conformément à la présente invention,1a tige de soupape E comporte des moyens d'amorce du desserrage, à savoir de la dilatation ou de l'écartement,de sa gaine de serrage êtanche D, capables d'assurer le fonctionnement dudit système de soupape quelle que soit la fréquence de commande de cette soupape, à savoir en dépit du processus naturel de vieillissement de l'élastomère dont se compose la gaine D.On the basis of the above, it is very well understood that if, for example, the activator balloon A is inserted in a duct, it is possible to open and shut off, respectively, the lumen of this duct in pro ¬ yielding in the manner described above, namely by alternately compressing the two activating balloons A and B: it goes without saying that the shape of one of the two net balloons (for example that of balloon B) can be a priori any, in particular β spherical, annular or other, but in any case such that it can adapt to the different applications which the control device according to the invention is capable of, while the shape of the other balloon , (therefore that of the balloon A) must be able to adapt, in the state of rest, to the shape of the conduit which it must close, in order to be able to fulfill the role of balloon both activator and obturator of the conduit whose flow must be ordered. In accordance with the present invention, the valve stem E comprises means for initiating the loosening, namely expansion or spacing, of its tight clamping sheath D, capable of ensuring the operation of said valve system whatever that is the frequency of control of this valve, namely in spite of the natural process of aging of the elastomer of which the sheath is made up D.
A cet effet, et de façon non limitative, la tige de soupape E présente, dans chacun des deux modes de réali- sation illustrés aux figures 1a et 1b, et à chacune de ses extrémités, un canal axial a borgne qui est en communica¬ tion avec le fluide de commande contenu dans chacun des deux ballonnets A et B ainsi qu'avec au moins un canal débouchant à la surface externe de la tige E au niveau de l'extrémité correspondante de la surface interne de la gaine de serrage êtanche D.To this end, and in a nonlimiting manner, the valve stem E has, in each of the two embodiments illustrated in FIGS. 1a and 1b, and at each of its ends, an axial blind channel which is in communication with each other. tion with the control fluid contained in each of the two balloons A and B as well as with at least one channel opening onto the external surface of the rod E at the corresponding end of the internal surface of the tight tightening sheath D .
En ce qui concerne les dispositions possibles, mais non limitatives, dudit canal débouchant à la surface de la tige, on peut ménager à cet effet dans chacune des extrémités de cette tige :With regard to the possible, but not limiting, arrangements of said channel opening onto the surface of the rod, it is possible to provide for this purpose in each of the ends of this rod:
- un canal radial unique, et ce du même côté ou de part et d'autre par rapport à l'axe longitudinal de la tige de soupape,- a single radial channel, on the same side or on either side with respect to the longitudinal axis of the valve stem,
- deux canaux radiaux situés sur la même perpendiculaire à l'axe longitudinal de la tige de soupape, ou encore - trois canaux radiaux ou une pluralité de ces canaux disposés autour dudit canal axial comme les "rayons" d'une étoile.- two radial channels located on the same perpendicular to the longitudinal axis of the valve stem, or - three radial channels or a plurality of these channels arranged around said axial channel like the "spokes" of a star.
En outre, le canal débouchant à la surface externe de la tige E peut avoir un parcours à priori quelconque, par exemple à spirale ou autre.In addition, the channel emerging at the external surface of the rod E can have a path a priori arbitrary, for example spiral or other.
Il va de soi que les moyens d'amorce du desserrage de la gaine de serrage de la tige de soupape ne se limitent pas aux modes de réalisation des fiqures 1 à 6. En particulier, on peut ménager au moins une gorgeIt goes without saying that the means for initiating the loosening of the tightening sheath of the valve stem are not limited to the embodiments of FIGS. 1 to 6. In particular, at least one groove can be provided
(ou rainure) g_ à la surface de la tige de soupape E. (cf. la figure 9) au lieu de ménager des passages a/r ou a./o comme illustré dans les figures précitées. Bien que la disposition de ces gorges peut être à paroi quelconque, les figures 9 (et 10) et 11 représentent deux dispositions avantageuses constituées par 4 gorges longitudinales g_ disposées à 90° l'une de l'autre sur la tige de soupape E. et par une gorge hélicoïdale g, ménagée sur la tige de soupape E5 , respecti¬ vement. Bien entendu le nombre de gorges longitudinales g_ et l'espacement angulaire entre deux de ces gorges consécuti¬ ves ne sont pas limités à 4 et 90°, respectivement.(or groove) g_ on the surface of the valve stem E. (cf. FIG. 9) instead of providing passages a / r or a./o as illustrated in the aforementioned figures. Although the arrangement of these grooves can be of any wall, Figures 9 (and 10) and 11 show two advantageous arrangements constituted by 4 longitudinal grooves g_ arranged at 90 ° from each other on the valve stem E. and by a helical groove g, formed on the valve stem E 5 , respecti¬ vement. Of course the number of longitudinal grooves g_ and the angular spacing between two of these consecutive grooves are not limited to 4 and 90 °, respectively.
La figure 13 représente une autre variante des moyens d'amorce du desserrage du cathéter J qui sont constitués par un canal axial a communiquant avec un canal radial r_ qui à son tour communique avec une gorge annulaire g_~ ménagée à la surface de la tige E_ .FIG. 13 represents another variant of the means for initiating the loosening of the catheter J which are constituted by an axial channel a communicating with a radial channel r_ which in turn communicates with an annular groove g_ ~ formed on the surface of the rod E_ .
Dans chaque cas, la pression du fluide de commande contenu dans chacun des deux ballonnets A et B est suffisante pour que le jet de fluide, qui suit le canal axial a et le ou les canaux (éventuellement radial ou radiaux) débouchant à la surface externe de la tige E, autorise l'écartement localisé de la gaine de serrage êtanche D par rapport à cette tige, permettant ainsi le passage du fluide de commande entre la surface externe de ladite tige de sou¬ pape et la surface interne de sa gaine de serrage.In each case, the pressure of the control fluid contained in each of the two balloons A and B is sufficient for the jet of fluid, which follows the axial channel a and the channel or channels (possibly radial or radial) opening to the external surface of the rod E, allows the localized spacing of the tight clamping sheath D by relative to this rod, thus allowing the passage of the control fluid between the external surface of said valve stem and the internal surface of its tightening sheath.
Il va de soi que, bien que la description de l'ap- plication des moyens d'amorce de la dilatation de la gaine de serrage êtanche D par rapport à la tige de soupape, ait été limitée, dans ce qui précède, aux seuls modes de réa¬ lisations illustrés dans les figures la_ et lb et qui correspondent aux figures la et lb de la Demande de Brevet français 83 14607 citée plus haut, on comprendra aisément que l'application des moyens d'amorce du desserrage susdits s'étend aussi aux autres modes de réalisation décrits dans la Demande de Brevet français précitée et, en particulier à ceux représentés aux figures 2, 3 et 4 de celle-ci. II est également clair que l'application des moyens d'amorce de la dilatation de ladite gaine de serrage êtanche par rapport à la tige de soupape selon la présente invention s'étend à d'autres systèmes que ceux décrits dans la Demande de Brevet français n° 83 14607 susdite. A cet effet, la figure 2 représente un mode de réa¬ lisation de la tige de soupape E, qui - conformément à la variante illustrée à la figure lb annexée ainsi qu'à la figure lb de la Demande de Brevet français n° 83 14607 - ne présente pas de renflements à ses extrémités. Or, confor- mément à la présente invention, la tige de soupape est cons¬ tituée par une portion de tube E, présentant une cloison intermédiaire £ délimitant, en coopération avec la paroi de cette portion de tube, deux canaux axiaux borgnes a, situés de part et d'autre par rapport à ladite cloison c. La paroi de la portion de tube E. est pourvue d'au moins un orifice o ménagé de part et d'autre de la cloison transversale c. Les orifices o mettent en communication les canaux axiaux bor¬ gnes a, (qui sont destinés à communiquer à leur tour avec le fluide de commande dont l'écoulement est contrôlé par la soupape) avec la surface externe de la tige de soupape. lesdits canaux a. et les orifices o constituant les moyens d'amorce du desserrage d'une gaine (non représentée à la figure 2) enveloppant la soupape E1 .It goes without saying that, although the description of the application of the means for initiating the expansion of the tight tightening sheath D relative to the valve stem, has been limited, in the foregoing, to only embodiments illustrated in Figures la_ and lb and which correspond to Figures la and lb of French Patent Application 83 14607 cited above, it will be readily understood that the application of the above loosening initiation means extends also to the other embodiments described in the aforementioned French Patent Application and, in particular to those shown in Figures 2, 3 and 4 thereof. It is also clear that the application of the means for initiating the expansion of said tight tightening sheath relative to the valve stem according to the present invention extends to other systems than those described in the French Patent Application. n ° 83 14607 above. To this end, FIG. 2 represents a mode of realization of the valve stem E, which - in accordance with the variant illustrated in the appended FIG. 1b as well as in FIG. 1b of French Patent Application n ° 83 14607 - has no bulges at its ends. However, in accordance with the present invention, the valve stem is constituted by a portion of tube E, having an intermediate partition £ delimiting, in cooperation with the wall of this portion of tube, two blind axial channels a, located on both sides with respect to said partition c. The wall of the tube portion E. is provided with at least one orifice o formed on either side of the transverse partition c. The orifices put in communication the axial channels bor¬ a, (which are intended in their turn to communicate with the control fluid, the flow of which is controlled by the valve) with the external surface of the valve stem. said channels a. and the orifices o constituting the means for initiating the loosening of a sheath (not shown in FIG. 2) enveloping the valve E 1 .
Cette soupape - qui a été représentée de façon tell qu'une moitié, symétrique par rapport à la cloison c, est en pointillé - s'applique au cas où l'écoulement du fluide de commande est bilatéral, c'est-à-dire qu'il a lieu dans les deux sens, en rapport avec l'application aux figures la et lb. II va de soi que l'écoulement bilatéral du fluide de commande n'est pas limitatif, de même que ce fluide n'est pas nécessairement limité à exercer, par l'action de sa pres¬ sion, une fonction de commande de la tige de soupape selon l'invention : il peut également exercer une action thérapeu- tique par l'intermédiaire de la soupape de contrôle de son écoulement, par exemple dans un sens seulement. Dans cet ordre d'idées, la soupape de la figure 2 , et de façon plus précise l'une des deux moitiés E_ de la soupape E, décrite plus haut - qui est la seule partie fonctionnelle utilisa- ble dans le cas d"écoulement unitaléral dudit fluide aux propriétés thérapeutiques - est susceptible d'une application origi¬ nale et immédiate aux dispositifs d'injection répétée de médicament, en doses unitaires et ^ une fréquence qui est fonction des besoins du traitement thérapeutique d'un patient donné.This valve - which has been shown so that one half, symmetrical with respect to the partition c, is dotted - applies to the case where the flow of the control fluid is bilateral, that is to say that it takes place in both directions, in relation to the application to Figures la and lb. It goes without saying that the bilateral flow of the control fluid is not limiting, just as this fluid is not necessarily limited to exerting, by the action of its pressure, a control function of the rod of valve according to the invention: it can also exert a therapeutic action via the valve for controlling its flow, for example in one direction only. In this order of ideas, the valve of figure 2, and more precisely one of the two halves E_ of the valve E, described above - which is the only functional part usable in the case of flow unitaleral of said fluid with therapeutic properties - is susceptible of an original and immediate application to devices for repeated injection of medication, in unit doses and ^ a frequency which depends on the needs of the therapeutic treatment of a given patient.
Il s'agit de dispositifs destinés à être implantés dans le corps d'un patient en position sous- cutanée et du type comportant (cf. la figure 3 annexée à la présente description) : - un site S d'injection du médicament, destiné à être implanté au-dessous de la peau du patient,These are devices intended to be implanted in the body of a patient in a subcutaneous position and of the type comprising (cf. FIG. 3 appended to this description): - a site S for injecting the medicament, intended to be implanted below the patient's skin,
- un moyen externe d'alimentation de ce site en ledit médicament, comportant notamment une aiguille g_*de pi¬ q re dudit site reliée à une seringue (non représentée) ou à une pompe (également non représentée), telle qu'une pornp*; à galets ou analogue, et - un cathéter d'injection J de chaque dose unitaire de médicament, destiné à être implanté dans la zone d'action thérapeutique, notamment constitué par une veine ou une ar¬ tère V du circuit sanguin d'un patient. L'application au dispositif de la figure 3, dont un détail a été représenté à plus grande échelle à la figure 4, permet d'éliminer le problème du bouchage de l'extrémité dis- taie du cathéter J qui a lieu après chaque injection de médi¬ cament par coagulation du sang, ce qui provoque la formation cle caillots qui posent à leur tour le problème de thrombose. En fait, étant donné que l'extrémité distale du cathéter J est bouchée par la soupape E2 et que ce cathéter se referme rapi¬ dement sur la soupape après chaque utilisation, chassant tout résidu de sang éventuellement présent, aucun risque de coagu- lation de sang ne se pose, et donc de thrombose par introduc¬ tion de caillots dans le circuit sanguin du malade.an external means of supplying this site with said drug, comprising in particular a needle g_ * of pi¬ q re of said site connected to a syringe (not shown) or to a pump (also not shown), such as a pornp *; with rollers or the like, and - An injection catheter J of each unit dose of drug, intended to be implanted in the area of therapeutic action, in particular consisting of a vein or artery V of the blood circuit of a patient. Application to the device of FIG. 3, a detail of which has been shown on a larger scale in FIG. 4, makes it possible to eliminate the problem of blockage of the distal end of catheter J which takes place after each injection of mediate by blood coagulation, which causes the formation of clots which in turn pose the problem of thrombosis. In fact, given that the distal end of the catheter J is blocked by the valve E 2 and that this catheter closes quickly on the valve after each use, expelling any residue of blood which may be present, no risk of coagulation no blood arises, and therefore thrombosis by introduction of clots into the patient's blood circuit.
Les figures 5 et 6 représentent essentiellement des variantes de réalisation du dispositif représenté aux figures 3 et 4 et montrent une zone amincie j. de 1& paroi de l'extré- mité distale du cathéter J. Cet amincissement est avantageux parce que la pression du médicament ne doit pas être élevée (comme, par exemple, dans le cas où le dispositif d'injection est relié à une pompe à galets), de façon à réduire la résis¬ tance au desserrage de la paroi du cathéter. En ce qui concerne les figures 7 et 8, celles-ci montrent des moyens de maintien en position de la tige de sou¬ pape qui sont alternatifs par rapport aux renflements d'extré¬ mité tels que représentés à la figure 1a (voir aussi la De¬ mande de Brevet français n° 83 14607) . Ces moyens alternatifs sont constitués par une por¬ tion de tube t, qui vient en butée contre un épaulement ren¬ trant ménagé dans le cathéter J, et par un fil f_ reliant la portion de tube t à la tige de soupape E, et ∑2 . Ce fil f_ et cette portion de tube t sont, de préférence, en acier inoxydable ou en matière plastique. Des moyens de maintien en position de la tige de soupape (également alternatifs par rapport à ceux qui sont il lustrés aux figures 1a, 1b, 7 et 8) sont représentés à la fi¬ gure 12. Celle-ci montre des lèvres L de blocage de la tige de soupape Eg , pourvue de moyens d'amorce du desserrage du cathéter J constitués par un canal axial borgne a communiquan avec deux canaux radiaux r. et r- .Figures 5 and 6 essentially show alternative embodiments of the device shown in Figures 3 and 4 and show a thinned area j. 1 & extré- wall of the distal catheter mite J. This thinning is advantageous because the drug pressure is not to be high (such as, for example, in the case where the injection device is connected to a pump with rollers), so as to reduce the resistance to loosening of the catheter wall. With regard to FIGS. 7 and 8, these show means for holding in position the stem of the pope which are alternative to the bulges at the end as shown in FIG. 1a (see also French patent application n ° 83 14607). These alternative means are constituted by a tube por¬, which abuts against a ren¬ trant shoulder formed in the catheter J, and by a wire f_ connecting the tube portion t to the valve stem E, and ∑ 2 . This wire f_ and this portion of tube t are preferably made of stainless steel or plastic. Means for holding the valve stem in position (also alternative to those shown in FIGS. 1a, 1b, 7 and 8) are shown in FIG. 12. This shows lips L of blocking of the valve stem E g , provided with means for initiating the loosening of the catheter J constituted by a blind axial channel a communicating with two radial channels r. and r-.
Lesdites lèvres de blocage L font saillie de part et d'autre de la tige de soupape Eg à partir de la paroi in- terne du cathéter J , délimitant ainsi pour cette tige Eg un logement disposé à l'extrémité distale du cathéter.Said locking lips L protrude on either side of the valve rod E g from the internal wall of the catheter J, thus delimiting for this rod E g a housing disposed at the distal end of the catheter.
Ainsi que cela ressort de ce qui précède, l'inventi ne se limite nullement à ceux de ses modes de réalisation et d'application qui viennent d'être décrits de façon plus expli cite ; elle en embrasse, au contraire, toutes les variantes qui peuvent venir à l'esprit du technicien en la matière sans s'écarter du cadre, ni de la portée, de la présente inventio As is apparent from the above, the invention is in no way limited to those of its embodiments and of application which have just been described in a more explicit manner; on the contrary, it embraces all the variants which may come to the mind of the technician in the matter without departing from the framework, or the scope, of the present invention.

Claims

REVENDICATIONS 1.- Dispositif de commande de l'écoulement d'un fluide, notamment d'un fluide biologique, du type compor¬ tant au moins deux ballonnets souples reliés par un tube de liaison (D) réalisé en une matière plastique souple présentant un retrait à la polymérisation, un système de soupape du type sensible uniquement à la pression résultant de la déformation manuelle de l'un des ballonnets susdits, lequel système de soupape comporte une tige (E) enserrée de façon êtanche, en condition de repos, par tout moyen de serrage approprié, à l'intérieur du tube de liaison (D) susdit, lequel dispositif de commande comporte en outre un moyen apte à empêcher le déplacement axial de la tige de soupape (E) le long du tube de liaison (D) sous l'effet de la pression susdite, ledit dispositif de commande étant caractérisé en ce que la tige (E) du système de soupape (E, D) comporte des moyens d'amorce du desserrage de la gaine (D) de serrage êtanche de la tige de soupape (E) sous l'effet de la pression d'un fluide dont l'écoulement est contrôlé par ladite tige de soupape.CLAIMS 1.- Device for controlling the flow of a fluid, in particular a biological fluid, of the type comprising at least two flexible balloons connected by a connection tube (D) made of a flexible plastic material having a shrinkage upon polymerization, a valve system of the type sensitive only to pressure resulting from the manual deformation of one of the above-mentioned balloons, which valve system comprises a rod (E) tightly clamped, in the condition of rest, by any suitable clamping means, inside the above-mentioned connecting tube (D), which control device further comprises means capable of preventing the axial displacement of the valve stem (E) along the connecting tube (D ) under the effect of the above pressure, said control device being characterized in that the rod (E) of the valve system (E, D) includes means for initiating the loosening of the tight tightening sheath (D) valve stem pe (E) under the effect of the pressure of a fluid whose flow is controlled by said valve stem.
2.- Dispositif selon la revendication 1, caracté¬ risé en ce que les moyens d'amorce du desserrage de la tige de soupape (E) sont constitués par au moins un canal longitu¬ dinal (9), axial ou parallèle à l'axe de la tige de soupape, ménagé au niveau d'au moins une des extrémités de cette der¬ nière, lequel canal longitudinal est borgne et est en commu¬ nication avec le fluide dont l'écoulement est contrôlé par la dite soupape, ainsi qu'avec au moins un canal transversal dé¬ bouchant à la surface externe de la tige de soupape (E) , au niveau de l'extrémité correspondante de la surface interne de la gaine de serrage êtanche (D).2.- Device according to claim 1, caracté¬ ized in that the means for initiating the loosening of the valve stem (E) are constituted by at least one longitu¬ dinal channel (9), axial or parallel to the axis of the valve stem, formed at at least one of the ends of the latter, which longitudinal channel is blind and is in communication with the fluid, the flow of which is controlled by said valve, as well as 'with at least one transverse channel opening up the external surface of the valve stem (E), at the level of the corresponding end of the internal surface of the tight tightening sheath (D).
3.- Dispositif selon la revendication 2, caracté¬ risé en ce que la tige de soupape est constituée par une por¬ tion de tube (E1) pourvue d'une cloison transversale intermé¬ diaire (£) délimitant en coopération avec la paroi de cette portion de tube, deux canaux axiaux borgnes (a, ) situés de part et d'autre par rapport à ladite cloison transversale (£ et communiquant avec au moins un orifice (o) ménagé dans la paroi de ladite portion de tube (E,) de part et d'autre par rapport à ladite cloison, lesdits deux canaux axiaux (a^) étant en communication avec le fluide dont l'écoulement est contrôlé par ladite tige de soupape (E,).3.- Device according to claim 2, caracté¬ ized in that the valve stem is constituted by a tube por¬ tion (E 1 ) provided with a transverse intermediate wall (£) delimiting in cooperation with the wall of this tube portion, two blind axial channels (a,) located on either side with respect to said transverse partition (£ and communicating with at least one orifice (o) formed in the wall of said tube portion (E,) on either side with respect to said partition, said two axial channels (a ^) being in communication with the fluid, the flow of which is controlled by said valve stem (E,).
4.- Dispositif selon la revendication 2, caracté¬ risé en ce que la tige de soupape est constituée par une por tion de tube (E-) borgne à une de ses extrémités et pourvue d'au moins un orifice (o) ménagé sur la paroi de ladite por¬ tion de tube (E-) et mettant en communication le canal axial borgne (a,)/délimité par cette paroi , avec la surface exte ne delà tige de soupape, ledit canal axial (a.) étant en co unication avec le fluide dont l'écoulement est contrôlé pa cette soupape.4.- Device according to claim 2, caracté¬ ized in that the valve stem is constituted by a por tion of tube (E-) blind at one of its ends and provided with at least one orifice (o) formed on the wall of said tube por¬ tion (E-) and placing in communication the blind axial channel (a,) / delimited by this wall, with the external surface not beyond the valve stem, said axial channel (a. co unication with the fluid, the flow of which is controlled by this valve.
5.- Dispositif selon la revendication 2, caracté risé en ce qu'au moins une des extrémités de la tige de so pape (E) comporte un canal transversal débouchant à la sur face de cette tige, constitué par un canal radial (r) uniqu ménagé du même côté ou de part et d'autre par rapport à un canal longitudinal axial ménagé dans ladite tige de soupap5.- Device according to claim 2, character ized in that at least one of the ends of the stem of so pope (E) has a transverse channel opening to the face of this rod, consisting of a radial channel (r) only arranged on the same side or on either side with respect to an axial longitudinal channel formed in said valve stem
6.- Dispositif selon la revendication 2, caracté risé en ce qu'au moins une des extrémités de la tige de so pape (E) comporte deux canaux transversaux débouchant à la surface de cette tige, constitués par deux canaux radiaux ( situés sur la même perpendiculaire à un canal longitudinal axial ménagé dans ladite tige de soupape.6.- Device according to claim 2, character ized in that at least one of the ends of the stem of so pope (E) comprises two transverse channels opening onto the surface of this stem, constituted by two radial channels (located on the even perpendicular to an axial longitudinal channel formed in said valve stem.
7.- Dispositif selon la revendication 2, caracté risé en ce qu'au moins une des extrémités de la tige de so pape (E) comporte trois ou plusieurs canaux débouchant à l surface de cette tige, constitués par trois ou plusieurs ca naux radiaux (r) disposés, autour d'un canal longitudinal axial, comme les "rayons" d'une étoile. 7.- Device according to claim 2, character ized in that at least one of the ends of the stem of so pope (E) comprises three or more channels emerging on the surface of this stem, constituted by three or more radial channels (r) arranged around an axial longitudinal channel, like the "rays" of a star.
8.- Dispositif selon l'une quelconque des revendica¬ tions 5 à 7, caractérisé en ce que ledit canal radial unique (r) communique avec une gorge annulaire (g.) ménagée à la sur¬ face externe de la tige de soupape (E^) . 8.- Device according to any one of claims 5 to 7, characterized in that said single radial channel (r) communicates with an annular groove (g.) Formed on the external surface of the valve stem ( E ^).
9.- Dispositif selon la revendication 2, caractéri¬ sé en ce qu'au moins une des extrémités de la tige de soupape (E) comporte un canal débouchant à la surface de cette tige, constitué par un canal ayant un parcours à priori quelconque et en particulier à spirale, communiquant avec un canal lon- gitudinal axial.9.- Device according to claim 2, caractéri¬ se in that at least one of the ends of the valve stem (E) comprises a channel opening on the surface of this rod, consisting of a channel having a path a priori any and in particular with a spiral, communicating with an axial longitudinal channel.
10.- Dispositif selon la revendication 1, caracté¬ risé en ce qu'au moins une des extrémités de la tige de sou¬ pape (E.) comporte au moins une gorge (g_, .j) ménagée à la surface externe de cette soupape.10.- Device according to claim 1, caracté¬ ized in that at least one of the ends of the stem of sou¬ pope (E.) comprises at least one groove (g_,. J ) formed on the outer surface of this valve.
11.- Dispositif selon la revendication 10, caractéri sé en ce qu'une pluralité de gorges longitudinales (g_) sont mé nagées à la surface externe d'au moins une des extrémités de l tige de soupape (E4), deux gorges consécutives étant espacées Q angulaire ent d'un même angle.11.- Device according to claim 10, characterized in that a plurality of longitudinal grooves (g_) are arranged in the external surface of at least one of the ends of the valve stem (E 4 ), two consecutive grooves being spaced Q angular ent by the same angle.
12.- Dispositif selon la revendication 10, caractéri sé en ce qu'une gorge hélicoïdale ( 2) est ménagée à la surfac externe d'au moins une des extrémités de la tige de soupape (E5). 5 13.- Dispositif d'injection répétée de médicament en doses unitaires et à une fréquence qui est fonction des besoin du traitement thérapeutique, ledit dispositif étant destiné à être implanté dans l'organisme d'un patient et étant du type comportant en combinaison : 0 ~ un site d'injection (S) du médicament, destiné à être implanté au-dessous de la peau du patient,12.- Device according to claim 10, characterized in that a helical groove ( 2 ) is formed in the external surface of at least one of the ends of the valve stem (E 5 ). 13. Device for repeated injection of drug in unit doses and at a frequency which depends on the needs of the therapeutic treatment, said device being intended to be implanted in the body of a patient and being of the type comprising in combination: 0 ~ an injection site (S) of the drug, intended to be implanted below the patient's skin,
- un moyen externe d'alimentation de ce site d'in¬ jection en ledit médicament, comportant notamment une aiguille de piqûre ( *) dudit site (S) reliée à une seringue ou à une 5pompe, telle qu'une pompe à galets ou analogue, et - un cathéter (J) d'injection de chaque dose uni¬ taire de médicament, destiné à être implanté dans la zone d'action thérapeutique, lequel cathéter (J) est réalisé en une matière plastique souple, telle qu'un élastomère de sil cône, lequel dispositif d'injection est caractérisé en ce qu'il c porte en outre un moyen de soupape qui contrôle l'écoulemen dudit médicament et qui est disposé dans le cathéter (J) à l'extrémité distale de celui-ci, ledit moyen de soupape éta conforme à la revendication 4 ou à l'une quelconque des rev dications 5 à 12, dans ce dernier cas lesdits canaux longit dinaux (a , a,) et radiaux (r) ou à spirale étant ménagés a niveau d'une seule des extrémités de la tige de soupape (E2 E_) du côté qui est en communication avec le médicament. an external means for supplying this injection site with said drug, comprising in particular a puncture needle (*) of said site (S) connected to a syringe or to a pump, such as a roller pump or analogous, and - A catheter (J) for injecting each unit dose of medication, intended to be implanted in the therapeutic action zone, which catheter (J) is made of a flexible plastic material, such as a sil elastomer cone, which injection device is characterized in that it c further carries a valve means which controls the flow of said medicament and which is disposed in the catheter (J) at the distal end thereof, said valve means according to claim 4 or to any one of claims 5 to 12, in the latter case said longitudinal (a, a,) and radial (r) or spiral channels being arranged at only one of the ends of the valve stem (E 2 E_) on the side which is in communication with the medicament.
14.- Dispositif selon la revendication 13, carac risé en ce que le cathéter (J) présente une zone amincie { au niveau de l'accès desdits canaux radiaux (r) ou orifice (o) accédant à la surface externe de la tige de soupape (E2 , E3). 14.- Device according to claim 13, charac risé in that the catheter (J) has a thinned area {at the access of said radial channels (r) or orifice (o) accessing the external surface of the rod valve (E 2 , E 3 ).
15.- Dispositif selon la revendication 14, carac risé en ce que l'amincissement (j_) susdit est définit par épaulement rentrant ménagé dans la surface externe du cath ter (J) .15.- Device according to claim 14, charac risé in that the aforementioned thinning (j_) is defined by re-entrant shoulder formed in the external surface of the cath ter (J).
16.- Dispositif selon la revendication 14, carac risé en ce que l'amincissement (j_) susdit est définit par épaulement rentrant ménagé dans la surface interne du cath ter (J), et en ce que l'extrémité distale de la tige de so pape présente un élargissement correspondant à 1*épaulemen rentrant interne du cathéter. 16.- Device according to claim 14, charac risé in that the aforementioned thinning (j_) is defined by re-entrant shoulder formed in the internal surface of the cath ter (J), and in that the distal end of the rod of so pope has a widening corresponding to the internal reentering shoulder of the catheter.
17.- Dispositif selon la revendication 13, carac risé en ce que la tige de soupape (Eg), qui est disposée d le cathéter (J) à son extrémité distale, est maintenue en sition par l'intermédiaire de lèvres de blocage (L) faisan saillie de la paroi interne du cathéter (J), de part et d' tre par rapport à l'emplacement de la tige de soupape (Eg), délimitant ainsi un logement pour cette dernière.17.- Device according to claim 13, charac risé in that the valve stem (E g ), which is disposed d the catheter (J) at its distal end, is held in position by means of locking lips ( L) pheasant protruding from the inner wall of the catheter (J), on both sides be relative to the location of the valve stem (E g ), thus delimiting a housing for the latter.
18.- Dispositif selon la revendication 13, caracté risé en ce que la tige de soupape (E, , E_) est maintenue en position par l'intermédiaire d'une portion de tube (t) venan en butée contre un épaulement rentrant externe de la paroi du cathéter (J) et relié à la tige de soupape (E2 , E-) par un fil, notamment en acier inoxydable comme la portion du tube (t) . 18.- Device according to claim 13, character ized in that the valve stem (E,, E_) is held in position by means of a portion of tube (t) venan in abutment against a reentrant external shoulder of the wall of the catheter (J) and connected to the valve stem (E 2 , E-) by a wire, in particular made of stainless steel like the portion of the tube (t).
PCT/FR1987/000136 1986-04-24 1987-04-23 Fluid flow rate control device, prosthetic organ provided with such device and method for fabricating such device WO1987006453A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8605928A FR2597748A2 (en) 1983-09-14 1986-04-24 Device for controlling the flowrate of a fluid, prosthetic member fitted with this device and method of manufacture of such a device
FR86/05928 1986-04-24

Publications (1)

Publication Number Publication Date
WO1987006453A1 true WO1987006453A1 (en) 1987-11-05

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ID=9334569

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1987/000136 WO1987006453A1 (en) 1986-04-24 1987-04-23 Fluid flow rate control device, prosthetic organ provided with such device and method for fabricating such device

Country Status (2)

Country Link
EP (1) EP0265469A1 (en)
WO (1) WO1987006453A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE820514C (en) * 1948-10-02 1951-11-12 Karl Schnabel Shut-off device for liquid and gaseous substances
FR2131276A5 (en) * 1970-12-03 1972-11-10 Scovill Manufacturing Co
EP0138648A2 (en) * 1983-09-14 1985-04-24 Centre National De La Recherche Scientifique (Cnrs) Device for controlling fluid flow and associated prostheses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE820514C (en) * 1948-10-02 1951-11-12 Karl Schnabel Shut-off device for liquid and gaseous substances
FR2131276A5 (en) * 1970-12-03 1972-11-10 Scovill Manufacturing Co
EP0138648A2 (en) * 1983-09-14 1985-04-24 Centre National De La Recherche Scientifique (Cnrs) Device for controlling fluid flow and associated prostheses

Also Published As

Publication number Publication date
EP0265469A1 (en) 1988-05-04

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