EP0265469A1 - Dispositif de commande du debit d'un fluide et organe prothetique equipe de ce dispositif - Google Patents
Dispositif de commande du debit d'un fluide et organe prothetique equipe de ce dispositifInfo
- Publication number
- EP0265469A1 EP0265469A1 EP19870902555 EP87902555A EP0265469A1 EP 0265469 A1 EP0265469 A1 EP 0265469A1 EP 19870902555 EP19870902555 EP 19870902555 EP 87902555 A EP87902555 A EP 87902555A EP 0265469 A1 EP0265469 A1 EP 0265469A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve stem
- valve
- stem
- channel
- tube
- 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.)
- Withdrawn
Links
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.
Landscapes
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8605928 | 1986-04-24 | ||
FR8605928A FR2597748A2 (fr) | 1983-09-14 | 1986-04-24 | Dispositif de commande du debit d'un fluide, organe prothetique equipe de ce dispositif et procede de fabrication d'un tel dispositif |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0265469A1 true EP0265469A1 (fr) | 1988-05-04 |
Family
ID=9334569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870902555 Withdrawn EP0265469A1 (fr) | 1986-04-24 | 1987-04-23 | Dispositif de commande du debit d'un fluide et organe prothetique equipe de ce dispositif |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0265469A1 (fr) |
WO (1) | WO1987006453A1 (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE820514C (de) * | 1948-10-02 | 1951-11-12 | Karl Schnabel | Absperrvorrichtung fuer fluessige und gasfoermige Stoffe |
GB1368742A (en) * | 1970-12-03 | 1974-10-02 | Scovill Manufacturing Co | Valves for pressurible containers |
FR2551656B1 (fr) * | 1983-09-14 | 1986-09-19 | Centre Nat Rech Scient | Dispositif de commande du debit d'un fluide, organe prothetique equipe de ce dispositif et procede de fabrication d'un tel dispositif |
-
1987
- 1987-04-23 WO PCT/FR1987/000136 patent/WO1987006453A1/fr not_active Application Discontinuation
- 1987-04-23 EP EP19870902555 patent/EP0265469A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8706453A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1987006453A1 (fr) | 1987-11-05 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19871130 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19891129 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19910611 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: REY, PIERRE Inventor name: SEZEUR, ALAIN Inventor name: ABBOU, CLEMENT Inventor name: LEANDRI, JACQUELINE |