WO1993025261A1 - Adapter for tube with multiple orifices - Google Patents

Adapter for tube with multiple orifices Download PDF

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Publication number
WO1993025261A1
WO1993025261A1 PCT/FR1993/000578 FR9300578W WO9325261A1 WO 1993025261 A1 WO1993025261 A1 WO 1993025261A1 FR 9300578 W FR9300578 W FR 9300578W WO 9325261 A1 WO9325261 A1 WO 9325261A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
sleeve
proximal end
annular chamber
annular
Prior art date
Application number
PCT/FR1993/000578
Other languages
French (fr)
Inventor
Pierre Roy
Original Assignee
Vygon
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
Application filed by Vygon filed Critical Vygon
Priority to EP93913133A priority Critical patent/EP0646029A1/en
Priority to JP6501198A priority patent/JPH07507701A/en
Publication of WO1993025261A1 publication Critical patent/WO1993025261A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0463—Tracheal tubes combined with suction tubes, catheters or the like; Outside connections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F16L39/02—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies for hoses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0434—Cuffs
    • A61M16/044—External cuff pressure control or supply, e.g. synchronisation with respiration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors

Definitions

  • ADAPTAT ' R FOR MU TI-LUMIERES TUBE
  • the present invention relates to the field of flexible tubes for medical use having at least one longitudinal channel formed in the thickness of their wall, for example the tubes used to breathe air into a person, also called endotracheal tubes, and more particularly an end connector for such a tube, intended to allow the connection in a removable manner to the tube of one or more instruments or pipes communicating with this or these longitudinal channels.
  • FIGS. 1 and 1A The state of the art on which the invention is based is described below with reference to FIGS. 1 and 1A.
  • an endotracheal tube comprising a flexible tube 1 provided at its distal end, adapted to be introduced into the trachea T of a patient, an inflatable balloon 2, intended to be inflated in the trachea T of the patient, to hold the tube 1 in place and close the space between the external surface of the tube and the internal surface of the trachea.
  • An artificial respirator not shown, is connected to an end piece 3 of the probe, force-fitted to the proximal end of the tube 1 so as to seal the inlet orifice of the end piece 3 to which the earpiece is connected. ventilator and the distal outlet orifice 5 of the tube 1.
  • the inflation of the balloon 2 is ensured by an inflation line comprising an auxiliary tube 6 for supplying air to the balloon 2, this auxiliary tube 6 connecting to a longitudinal channel formed in the thickness of the wall of the tube 1.
  • the auxiliary tube 6 is supplied with inflation air through an external inflation indicator constituted by a flexible pocket 7 of oblong shape tightly connected at one end to the auxiliary tube 6 and connected at the other end to a tap and / or a non-return valve 8, provided with an air inlet orifice 9 for inflating the balloon 2.
  • an external inflation indicator constituted by a flexible pocket 7 of oblong shape tightly connected at one end to the auxiliary tube 6 and connected at the other end to a tap and / or a non-return valve 8, provided with an air inlet orifice 9 for inflating the balloon 2.
  • the wall of the flexible tube is drilled laterally on a half-thickness bordering the longitudinal channel and the end of the auxiliary tube 6, previously coated with adhesive, is introduced by this drilling to seal between the tube. auxiliary 6 and the longitudinal channel.
  • the assembly thus produced must be tested, which of course has repercussions on the final price of the endotracheal tube.
  • the inflation line because of its size, is inconvenient for the practitioner and the patient.
  • the connector comprises a sleeve having a tubular insertion part and an annular groove delimited radially by said insertion part and by a tubular skirt extending opposite said insertion part, the latter being able to be inserted into said proximal end up to an insertion end-of-travel position providing, with the bottom of said groove, upstream of the proximal end edge of the tube, a space bordered by the sleeve and closing means for closing said space and forming an annular chamber open on said end edge and into which the longitudinal channel opens, this annular chamber communicating in leaktight manner with an associated outlet orifice.
  • the abovementioned closing means consist of a tubular envelope extending from the radially external surface of the cylindrical skirt to be applied tightly to the external surface of the tube.
  • European patent application EP-0 137 142 has proposed a one-piece removable connector for an endotracheal tube, comprising an insertion part inserted into the tube at its end. proximal and a tubular skirt extending opposite the insertion part, provided on its radially internal surface with an annular boss intended to pinch the tube in order to tightly seal an annular space into which opens a longitudinal channel formed in the 'tube thickness.
  • the holding of the tube on the fitting and the sealing depend on the pinching force exerted by the boss on the wall of the tube, so that effective holding and good sealing require a large pinching force, with the disadvantage locally crush the tube and the longitudinal channel formed in its wall and make it difficult to fit the tube onto the fitting by fitting.
  • the object of the present invention is to provide an improved end fitting for a flexible tube for medical use which overcomes the aforementioned drawbacks, in particular a fitting whose mounting on a tube as mentioned above is easy, as is the disassembly of the tube and of the fitting.
  • a proximal end connector for flexible tube for medical use having at least one longitudinal channel formed in the thickness of its wall and opening onto the proximal end edge of the tube, this connector being intended to the removable connection of one or more instruments or pipes, the connection comprising a sleeve having a tubular insertion part and an annular groove delimited radially by said insertion part and by a tubular skirt extending opposite said part insertion, the latter being able to be inserted into said proximal end to an insertion end of travel position providing, with the bottom of the groove upstream of the edge of the proximal end of the tube, a space bordered by the sleeve and closing means for closing said space and forming an annular chamber open on said end edge and into which the long channel opens tudinal, this annular chamber communicating in leaktight manner with an associated outlet orifice, characterized in that said closure means comprise a clamping sleeve capable of engaging in this groove and being screwed onto the
  • said outlet orifice is located on the clamping sleeve.
  • the clamping sleeve then advantageously comprises a part capable of being threaded onto the tube, a screwing part coming to engage on the sleeve, and a passage formed between these two parts in order to make said annular chamber communicate with said outlet orifice.
  • an end fitting according to the invention comprises an integrated pressure indicator constituted by a flexible membrane, fixed by its periphery to the external surface of the fitting, closing off an auxiliary orifice communicating in leaktight manner with said annular chamber, and capable of indicating, taking an inflated form, that the pressure prevailing in said longitudinal channel is greater than ambient pressure.
  • said annular chamber is advantageously angularly partitioned so as to define a plurality of independent auxiliary chambers each communicating with a longitudinal channel and an associated outlet.
  • one of the longitudinal channels opens at the proximal end of the tube and the other channels open onto axially spaced bores; the sleeve and the clamping sleeve are provided with annular ribs located opposite one another and on either side of each of said bores to pinch the wall of the pipe and form auxiliary annular chambers into which said bores open, these chambers auxiliary annulars each communicating in a sealed manner with an associated outlet orifice.
  • connection there is provided on the external surface of the connection at least one lateral connection end piece communicating with said annular chamber and at the end of which opens the outlet orifice, and in a particular embodiment, the end connection includes a valve non-return valve or an integrated valve inside said lateral connection nipple.
  • FIG. 1 previously described, shows an endotracheal tube according to the prior art
  • FIG. 1A previously described, illustrates the use of an endotracheal tube according to the prior art
  • FIG. 2 is a cross section of a flexible tube for medical use, of known type, having a longitudinal channel formed in the thickness of its wall,
  • FIG. 3 is a cross section of a known variant of the tube shown in FIG. 2,
  • FIG. 4 is a partial schematic view showing the various components of an end fitting according to a first embodiment of the invention, before mounting on a flexible tube for medical use as shown in Figures 2 or 3,
  • FIG. 4A is an axial section of a sleeve according to a first embodiment of the invention
  • FIG. B is an axial section of a socket according to a first embodiment of the invention.
  • FIG. 5 is an axial schematic section showing the sleeve and the bushing shown in FIGS. 4A and B in the assembled position on a flexible tube for medical use as shown in FIGS. 2 and 3,
  • FIG. 5A is a schematic axial section of a first alternative embodiment of an end fitting according to the first embodiment of the invention
  • FIG. 5B is a schematic axial section of a second alternative embodiment of an end fitting according to the first embodiment of the invention
  • Figures 6A to 6D illustrate the different stages of mounting a fitting end according to a first embodiment of the invention on a flexible tube for medical use
  • FIG. 7 is a view of ens e MBLE endotracheal probe equipped with an end fitting according to a first embodiment of the invention
  • FIG. 7A shows the placement of an endotracheal tube as shown in FIG. 7 in the trachea of a patient
  • FIG. 8 illustrates the removable connection on the end connection of a syringe
  • FIG. 9 illustrates the removable connection on the end fitting of an injection needle
  • FIG. 10 illustrates the removable connection on the end fitting of an adapter for pipes of different diameters, or of pipes equipped with various connection means
  • FIG. 11 is a schematic axial section showing a sleeve and a socket in accordance with a second embodiment of the invention, in the assembled position on a flexible tube for medical use as shown in FIGS. 2 and 3,
  • FIG. 12 is a cross-section showing a flexible tube comprising several longitudinal channels formed in the thickness of its wall
  • FIG. 1 3 is a side view of the proximal end of the flexible tube presented in FIG. 12,
  • Figure 1 is a schematic longitudinal section showing an end fitting according to a variant of the second embodiment of the invention, shown in Figure 1 1.
  • an elastically deformable flexible tube 20 known in itself, having a central duct 21 and a longitudinal channel 22 formed in the thickness of its wall.
  • the tube 20 further comprises a line 23 molded in formation in its wall and made of a material opaque to X-rays, so that the positioning of the tube 20 in the trachea of the patient can be followed on a screen in real time by X-ray radiography.
  • an end fitting intended to equip a flexible tube 20 as previously described.
  • This end fitting consists of two parts capable of engaging by screwing into each other, on the one hand a sleeve 30 having a tubular insertion part 31 intended to be inserted in the proximal end 24 of the tube 20 and a clamping sleeve 60, intended to be threaded onto the tube 20 and to cooperate with the sleeve.
  • the sleeve 30 is shown in isolation, in axial section in FIG. 4A.
  • the insertion part 31 is traversed longitudinally by a bore 32 opening opposite the front end 31 a on a bore 33 formed inside a cylindrical body 34 of larger external diameter than the part of insertion 31 and extending along the X axis in the extension of the insertion part 31, so that the opening 35 of the front end 31 a of the insertion part 31 communicates sealingly with an opening 36 provided at the free end of the cylindrical body 34.
  • the external surface 31 b of the insertion part 31 of the sleeve 30 is conical, converging in the direction of the front end 31 a, in order to facilitate the positioning of the insertion part 31 in the tube 20, and has a shoulder 31 d to block the insertion of the tube at an insertion end position.
  • the diameter of the external surface 31 b, measured in the transverse plane of the opening 35 is greater than or equal to the internal diameter of the central duct 21, and less than the external diameter of the tube 20.
  • the wall of the tube 20 expands elastically and the external surface 31 b is applied continuously, on an axial sector of its periphery, on the internal wall of the tube 20, thus participating in the sealing of the assembly of the sleeve 30 on the central duct 21.
  • the shoulder 31 d used to block the insertion of the tube at an end-of-travel position has a thickness less than the thickness of the wall of the tube 20 bordering the longitudinal channel 22, so as not to obscure the latter.
  • the diameter of the external surface of the cylindrical body 34 is normalized, typically to a diameter of 15 mm, so as to facilitate the connection to the sleeve of a large number of devices.
  • the sleeve has an annular groove 37 open towards the front end 31 a of the insertion part 31, bordered radially by the external surface 31 b of the insertion part 31 and by a tubular skirt 38 extending longitudinally opposite the insertion part 31.
  • the tubular skirt 38 centered on the axis X, extends along the axis X in the direction of the front end 31a, on approximately two-thirds of the length of the insertion part 31, and is positioned, during the mounting of the sleeve 30 on the tube 20, opposite the external surface of the wall of the tube 20, as will be explained below .
  • the tubular skirt 38 comprises, at its connection to the rest of the sleeve and projecting from its radially internal surface 38a, an annular bulge 39 of generally convex shape towards the outside.
  • the annular bulge 39 is crossed by a bore 40 extending in the direction of an axis Y intersecting the axis X perpendicularly, and contained in the cutting plane of FIG. 4A.
  • a nozzle 1 for lateral connection is attached or molded in formation on the radially external surface 38b of the tubular skirt 38 and extends along the axis Y in the extension of the bore 40 so that the opening 42 of the end piece 41 communicates in leaktight manner, through the bore 40, with the annular space 43 situated between the base 31c of the insertion part 31 and the annular bulge 39, that is to say again with the space radially delimited by the radially internal surface 38a of the tubular skirt 38 and the radially external surface 31b of the insertion part 31.
  • the external surface of the annular bulge 39 extends opposite the external surface of the base 31c of the insertion part 31 at a distance measured radially slightly greater than the thickness of the wall of the flexible tube 20.
  • the tubular skirt 38 is preferably threaded on its radially internal surface 38a in order to allow engagement by screwing of the sleeve 60 as will be explained below.
  • FIG. 4B there is shown in Figure 4B, in axial section, a clamping sleeve 60 according to a first embodiment of the invention, intended to cooperate with the sleeve 30 previously described.
  • This socket 60 is symmetrical with respect to an axis referenced Z, contained in the section plane of FIG. 4B.
  • the socket 60 comprises a tubular body 61 symmetrical in revolution about the axis Z and traversed longitudinally by a central lumen 62, the minimum internal diameter of which is slightly greater than or equal to the diameter of the external surface of the tube 20, so that the clamping sleeve 60 can be threaded on the tube 20 and slide freely on the latter.
  • the tubular body 61 is extended radially on its outer periphery and at about half its length by a radial flange 63 provided on a side transverse to the axis Z of a crown 63a having on its periphery sections 63b intended to facilitate taking in by hand or using a tool from the socket when tightening on the sleeve, as will be explained below.
  • the tubular body 61 could be provided with two clamping ears extending opposite one another on the radially external surface of the tubular body 61.
  • crown 63a extends in the direction of an axial end of the tubular body 61, an end which we will designate hereinafter by rear end 61a.
  • the tubular body 61 has on an axial sector of its internal surface, approximately over a third of its length on either side of a median plane containing the collar 63, a conical surface. 64 centered on the Z axis and converging towards the rear end 61a.
  • the front end of the tubular body 61, opposite the rear end 61a and which is intended to be inserted in the space 43 of the aforementioned sleeve will be referenced 61b for the following.
  • tubular body 61 has at its front and rear axial ends 61b and 61a a wall of reduced thickness, the radially internal surface of which recedes with respect to the conical surface 64 to form two annular clearances 68 and 69.
  • the generally cylindrical body 61 has at the front end 61b a thin tapered annular lip 66, the radially internal wall of which recedes with respect to the conical surface 64, forming the above-mentioned clearance 69.
  • the external surface 67 of the clamping sleeve 60 extending between the base of the annular lip 66 and the radial flange 63 is threaded to engage by screwing on the thread provided on the internal surface 38a of the tubular skirt 38 of the sleeve 30. If we now refer to FIG.
  • the annular chamber 50 is formed in the space 43 of the bottom of the annular groove 37 of the sleeve 30 previously described with reference to FIG. 4A, this space being closed transversely to the axis X by the proximal end edge 24 of the tube 20.
  • et_ the free section of the front end 61 b of the generally cylindrical body 61 of the sleeve 60. More precisely, in the assembled position, the wall of the tube 20 is pinched on an axial sector of its periphery between the conical surfaces 64 of the sleeve 60 and the external surface 31b of the insertion part 31 of the sleeve 30, which ensures the seal between the wall of the tube 20 and these two surfaces.
  • the threaded external surface 67 of the sleeve 60 is engaged in the complementary threading provided on the internal surface 38a of the tubular skirt 38, the radially external surface of the annular lip 66 is applied against the annular bulge 39, which allows the sealing of the annular chamber with respect to the thread, and the flange 63 abuts on the free transverse section of the tubular skirt 38.
  • the longitudinal channel 22 communicates in leaktight manner with the bore 40, therefore with the orifice outlet 42 of the lateral connection end piece 41.
  • This pressure indicator consists of a membrane 70 of flexible material, capable of assuming an appearance, for example hemispherical as shown when inflated, which is connected by its periphery to a flat provided on the external surface of the sleeve 30 and communicates in a manner watertight with the annular chamber 50 by a bore 44 provided at the base of the cylindrical skirt 38, the axis I of which is angularly offset around the axis X relative to the axis Y, preferably 180 ° as shown.
  • the membrane 70 When the longitudinal channel 22 is not under pressure, the membrane 70 is not stretched. On the contrary, as soon as the pressure inside the longitudinal channel is greater than the ambient pressure, the wall of the membrane tightens and takes the hemispherical shape shown in FIG. 5A.
  • connection end piece 41 comprises two parts, including a first part constituted by an end piece 41a attached to the body of the sleeve, after insertion of the non-return valve 45, and a second part 41 secured to the sleeve 30 and into which the bore 40 opens.
  • the sleeve 60 is threaded at the proximal end 24 of the tube 20, oriented as shown in FIGS. 6A and 6B, that is to say, the front end 61b turned towards the end proximal free 2 ⁇ J tube 20 when threaded thereon.
  • the insertion part 31 of the sleeve 30 is manually engaged in the central conduit of the tube 20 until the end edge of the tube 20 abuts against the shoulder 31d and prevents the tube 20 from being pressed further.
  • a position insertion limit switch which provides space opposite the end edge of the tube, bordered by the sleeve.
  • the end fitting which has just been described advantageously equips a flexible tube 20 fitted with an inflatable balloon 2 of known type, to form an endotracheal tube as shown in FIG. 7.
  • an endotracheal tube equipped with an end fitting according to the invention presents a space requirement. less and facilitates operative gestures during intubation. It is also possible, thanks to the invention, instead of supplying air via the longitudinal channel 22 with an inflatable balloon 2, to inject product through this longitudinal channel 22 from which the distal end is then opened directly. in the patient's trachea, by connection to the tip 41 of a needle A or a syringe S, as shown diagrammatically in FIGS. 8 and 9. It will be noted that in the case where the injection is carried out by through a needle A, the end piece 41 is preferably provided with a plug B closed by a perforable elastic membrane.
  • end piece 41 with an adapter R, for the connection to this end piece of an instrument or of a pipe not having the same diameter, as illustrated in FIG. 10, or in view to connect to the end piece 41 instruments or pipes having various connection means.
  • FIG 11 there is shown in Figure 11, in axial section, an end fitting according to a second embodiment of the invention.
  • This end fitting comprises a sleeve 30 "having a tubular insertion part 31" extending longitudinally along an axis X ", capable of being inserted into the proximal end of the tube 20 and a clamping sleeve 60" cooperating with the sleeve 30 "and coming to be applied on the external surface of the tube 20 to clamp the latter on the insertion part 31".
  • the insertion part 31 is connected via a bulged part 51" threaded on its external surface on a cylindrical base 34 ", having a cylindrical external surface of larger diameter.
  • This bulged part 51" serves as a stop limit switch for inserting the insertion part 31 "into the tube.
  • the clamping sleeve 60" comprises a tubular body 61 "having a part 61" capable of being threaded on the tube 20 at the proximal end of the latter and a screwing part 61 "b coming to engage on the bulged part 51" of the sleeve.
  • the radially internal surface of the body 61 " is conical, diverging in the direction of the free end of the body, so as to facilitate the engagement of the sleeve on the tube.
  • An annular chamber 50" is delimited radially by the radially internal surface of the body 61 ", the radially external surface of the insertion part at the place where this is connected to the bulged part 51", and transversely to the axis X ", by the free section from the proximal end of the tube 20 and the screwing part of the socket 60 ".
  • a bore 40 extends radially between these two parts along an axis Y" perpendicular to the axis X “and communicates with a lateral connection piece 41" provided on the external surface of the sleeve 60 ".
  • embodiment which have just been described correspond to a tube provided with a single longitudinal channel, and the end fitting therefore only comprises a single lateral connection end piece communicating with this longitudinal channel.
  • a person skilled in the art can propose other alternative embodiments of an end fitting without departing from the scope of the present invention, in particular with a view to connection to a flexible tube having several longitudinal channels, for example a first longitudinal channel. for the air supply of an inflatable balloon and a second longitudinal channel for injecting products.
  • a tube 100 having three longitudinal channels formed in the thickness of its wall, angularly offset by 90 ° between them. It can be, for example, a channel 105 for the air supply of an inflatable balloon, a channel 1 10 for performing product injections and a channel 120 for monitoring the pressure, connected to a pressure gauge.
  • FIG. 15 shows an end fitting according to a variant of the embodiment shown in FIG. 11 previously described, comprising a sleeve 130 and a cooperating clamping sleeve 140 with each other to define three axially offset annular chambers 150, 160 and 170, into which respectively open the longitudinal channel 105, the bore 1 12 and the bore 122.
  • the longitudinal channels 110 and 120 do not not extend towards the proximal end edge 102 beyond the corresponding holes 1 12 and 122, or are closed, so as not to lead to it.
  • the annular chambers 150, 160 and 170 are closed axially by annular ribs 132, 134, 136 and 142, 144 * 146 respectively located opposite one another on the sleeve 130 and the sleeve 140 and on either side of the holes 1 12 and 122 for pinching the wall of the tube and thus ensuring the tightness of the annular chambers 150, 160 and 170.
  • the annular chambers 150, 160 and 170 communicate with associated outlet orifices respectively referenced 152, 162 and 172 provided on the socket 140.
  • a polarizing device on the internal surface of the tube capable of cooperating, by form effect, with a notch or a projection of complementary shape provided on the external surface of the insertion part of the sleeve, in order to angularly position each longitudinal channel as desired opposite the associated auxiliary chamber.
  • the sleeve and the connector are made of plastic, advantageously a polyacetal or a polyamide.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A proximal end fitting for a flexible tube for medical use has at least one longitudinal channel formed in the thickness of the wall and opening onto the proximal tube end. Said fitting is designed to detachably couple one or more instruments or tubing. The fitting consists of a sleeve or collet, the sleeve (30) having a tubular insertion part which is inserted a given distance into the proximal end (24) defining upstream of the tube's proximal end part a space bordered by the sleeve. The collet (60) co-operates with the sleeve so as to grip the tube at the insertion part and close said space to form an annular chamber (50), open on said proximal end part, and into which opens the longitudinal channel (22). The annular chamber is in sealing communication with an associated outlet orifice (42) on the sleeve or collet.

Description

ADAPTAT' :R POUR TUBE MU TI-LUMIERES ADAPTAT ': R FOR MU TI-LUMIERES TUBE
La présente invention concerne le domaine des tubes souples à usage médical présentant au moins un canal longitudinal formé dans l'épaisseur de leur paroi, par exemple les tubes utilisés pour insuffler de l'air à une personne, encore appelés sondes endotrachéales, et plus particulièrement un raccord d'extrémité pour un tel tube, destiné à permettre le raccordement d'une façon amovible sur le tube d'un ou de plusieurs instruments ou canalisations communiquant avec ce ou ces canaux longitudinaux.The present invention relates to the field of flexible tubes for medical use having at least one longitudinal channel formed in the thickness of their wall, for example the tubes used to breathe air into a person, also called endotracheal tubes, and more particularly an end connector for such a tube, intended to allow the connection in a removable manner to the tube of one or more instruments or pipes communicating with this or these longitudinal channels.
L'état de la technique sur lequel repose l'invention est décrit ci-après en référence aux figures 1 et 1A. On aperçoit sur ces figures une sonde endotrachéale comprenant un tube souple 1 muni à son extrémité distale, apte à être introduite dans la trachée T d'un patient, d'un ballonnet gonflable 2, destiné à être gonflé dans la trachée T du patient, pour maintenir en place le tube 1 et fermer l'espace compris entre la surface externe du tube et la surface interne de la trachée. Un respirateur artificiel non représenté est branché sur un embout 3 de la sonde, emmanché à force à l'extrémité proximale du tube 1 de façon à faire communiquer de façon étanche l'orifice d'entrée de l'embout 3 sur lequel est branché le respirateur et l'orifice de sortie distal 5 du tube 1. Le gonflage du ballonnet 2 est assuré par une ligne de gonflage comprenant un tube auxiliaire 6 d'alimentation en air du ballonnet 2, ce tube auxiliaire 6 se raccordant sur un canal longitudinal ménagé dans l'épaisseur de la paroi du tube 1. Le tube auxiliaire 6 est alimenté en air de gonflage au travers d'un témoin de gonflage externe constitué par une poche souple 7 de forme oblongue raccordée de façon étanche à une extrémité sur le tube auxiliaire 6 et connectée à l'autre extrémité sur un robinet et/ou une valve anti-retour 8, muni(e) d'un orifice d'entrée d'air 9 pour le gonflage du ballonnet 2. Un tel dispositif ne donne cependant pas entièrement satisfaction, notamment car la jonction entre le tube auxiliaire 6 et le canal longitudinal du tube 1 est délicate à réaliser. En effet, pour réaliser cet assemblage on perce latéralement la paroi du tube souple sur une demi-épaisseur bordant le canal longitudinal et on introduit par ce perçage l'extrémité du tube auxiliaire 6, préalablement enduit de colle pour réaliser l'étanchéité entre le tube auxiliaire 6 et le canal longitudinal. L'assemblage ainsi réalisé doit être testé, ce qui se répercute bien sûr sur le prix final de la sonde endotrachéale. Par ailleurs, la ligne de gonflage, à cause de son encombre¬ ment, est gênante pour le praticien et le malade.The state of the art on which the invention is based is described below with reference to FIGS. 1 and 1A. We see in these figures an endotracheal tube comprising a flexible tube 1 provided at its distal end, adapted to be introduced into the trachea T of a patient, an inflatable balloon 2, intended to be inflated in the trachea T of the patient, to hold the tube 1 in place and close the space between the external surface of the tube and the internal surface of the trachea. An artificial respirator, not shown, is connected to an end piece 3 of the probe, force-fitted to the proximal end of the tube 1 so as to seal the inlet orifice of the end piece 3 to which the earpiece is connected. ventilator and the distal outlet orifice 5 of the tube 1. The inflation of the balloon 2 is ensured by an inflation line comprising an auxiliary tube 6 for supplying air to the balloon 2, this auxiliary tube 6 connecting to a longitudinal channel formed in the thickness of the wall of the tube 1. The auxiliary tube 6 is supplied with inflation air through an external inflation indicator constituted by a flexible pocket 7 of oblong shape tightly connected at one end to the auxiliary tube 6 and connected at the other end to a tap and / or a non-return valve 8, provided with an air inlet orifice 9 for inflating the balloon 2. However, such a device is not entirely satisfactory, in particular because the junction between the auxiliary tube 6 and the longitudinal channel of the tube 1 is difficult to achieve. Indeed, to achieve this assembly, the wall of the flexible tube is drilled laterally on a half-thickness bordering the longitudinal channel and the end of the auxiliary tube 6, previously coated with adhesive, is introduced by this drilling to seal between the tube. auxiliary 6 and the longitudinal channel. The assembly thus produced must be tested, which of course has repercussions on the final price of the endotracheal tube. Furthermore, the inflation line, because of its size, is inconvenient for the practitioner and the patient.
On connaît par le brevet américain US--. 020 8 un raccord d'extrémité proximale pour un tube de sonde endotrachéale présentant un canai longitudinal formé dans l'épaisseur de sa paroi et débouchant sur la tranche d'extrémité proximale du tube. Le raccord comprend un manchon présentant une partie d'insertion tubulaire et une gorge annulaire délimitée radialement par ladite partie d'insertion et par une jupe tubulaire s'étendant en regard de ladite partie d'insertion, cette dernière étant apte à être insérée dans ladite extrémité proximale jusqu'à une position de fin de course d'insertion ménageant avec le fond de ladite gorge, en amont de la tranche d'extrémité proximale du tube un espace bordé par le manchon et des moyens de fermeture pour fermer ledit espace et former une chambre annulaire ouverte sur ladite tranche d'extrémité et dans laquelle débouche le canal longitudinal, cette chambre annulaire communiquant de façon étanche avec un orifice de sortie associé.It is known by the American patent US--. 020 8 a proximal end fitting for an endotracheal probe tube having a longitudinal channel formed in the thickness of its wall and opening onto the proximal end edge of the tube. The connector comprises a sleeve having a tubular insertion part and an annular groove delimited radially by said insertion part and by a tubular skirt extending opposite said insertion part, the latter being able to be inserted into said proximal end up to an insertion end-of-travel position providing, with the bottom of said groove, upstream of the proximal end edge of the tube, a space bordered by the sleeve and closing means for closing said space and forming an annular chamber open on said end edge and into which the longitudinal channel opens, this annular chamber communicating in leaktight manner with an associated outlet orifice.
Les moyens de fermeture précités sont constitués par une enveloppe tubulaire s'étendant depuis la surface radialement externe de la jupe cylindrique pour s'appliquer étroitement sur la surface externe du tube. Cette réalisation rend difficile, sinon impossible, le démontage et le remontage du tube et du raccord, notamment pour permettre au praticien de sectionner le tube à la longueur voulue et réduire ainsi l'encombrement de la sonde hors du patient.The abovementioned closing means consist of a tubular envelope extending from the radially external surface of the cylindrical skirt to be applied tightly to the external surface of the tube. This embodiment makes it difficult, if not impossible, to dismantle and reassemble the tube and the connector, in particular to allow the practitioner to cut the tube to the desired length and thus reduce the size of the probe outside the patient.
On a proposé dans la demande de brevet européen EP- 0 137 142 un raccord amovible monobloc pour tube de sonde endotrachéale, comprenant une partie d'insertion insérée dans le tube à son extrémité proximale et une jupe tubulaire s'étendant en regard de la partie d'insertion, munie sur sa surface radialement interne d'un bossage annulaire destiné à pincer le tube pour fermer de façon étanche un espace annulaire dans lequel débouche un canal longitudinal ménagé dans l'épaisseur du tube. Le maintien du tube sur le raccord et l'étanchéité dépendent de la force de pincement qu'exerce le bossage sur la paroi du tube, de sorte qu'un maintien efficace et une bonne étanchéité nécessitent une grande force de pincement, avec l'inconvénient d'écraser localement le tube et le canal longitudinal formé dans sa paroi et de rendre difficile le montage par emmanchement du tube sur le raccord.European patent application EP-0 137 142 has proposed a one-piece removable connector for an endotracheal tube, comprising an insertion part inserted into the tube at its end. proximal and a tubular skirt extending opposite the insertion part, provided on its radially internal surface with an annular boss intended to pinch the tube in order to tightly seal an annular space into which opens a longitudinal channel formed in the 'tube thickness. The holding of the tube on the fitting and the sealing depend on the pinching force exerted by the boss on the wall of the tube, so that effective holding and good sealing require a large pinching force, with the disadvantage locally crush the tube and the longitudinal channel formed in its wall and make it difficult to fit the tube onto the fitting by fitting.
La présente invention a pour objet de proposer un raccord d'extrémité perfectionné, pour tube souple à usage médical, remédiant aux inconvénients précités, notamment un raccord dont le montage sur un tube tel que précité est aisé, de même que le démontage du tube et du raccord. A cet effet, il est proposé un raccord d'extrémité proximale pour tube souple à usage médical, présentant au moins un canal longitudinal formé dans l'épaisseur de sa paroi et débouchant sur la tranche d'extrémité proximale du tube, ce raccord étant destiné au raccordement amovible d'un ou de plusieurs instruments ou canalisations, le raccord comprenant un manchon présentant une partie d'insertion tubulaire et une gorge annulaire délimitée radialement par ladite partie d'insertion et par une jupe tubulaire s'étendant en regard de ladite partie d'insertion, cette dernière étant apte à être insérée dans ladite extrémité proximale jusqu'à une position de fin de course d'insertion ménageant avec le fond de la gorge en amont de la tranche d'extrémité proximale du tube un espace bordé par le manchon et des moyens de fermeture pour fermer ledit espace et former une chambre annulaire ouverte sur ladite tranche d'extrémité et dans laquelle débouche le canal longitudinal, cette chambre annulaire communiquant de façon étanche avec un orifice de sortie associé, caractérisé en ce que lesdits moyens de fermeture comprennent une douille de serrage apte à s'engager dans cette gorge et se visser sur la surface radialement interne de ladite jupe tubulaire pour former ladite chambre annulaire, en s'app quant de façon étanche à la fois sur la périphérie externe du tube et sur la surface radialement interne de la jupe tubulaire, de manière à serrer le tube sur la partie d'insertion. Dans un mode de réalisation de l'invention, ledit orifice de sortie est situé sur le manchon.The object of the present invention is to provide an improved end fitting for a flexible tube for medical use which overcomes the aforementioned drawbacks, in particular a fitting whose mounting on a tube as mentioned above is easy, as is the disassembly of the tube and of the fitting. To this end, a proximal end connector for flexible tube for medical use is proposed, having at least one longitudinal channel formed in the thickness of its wall and opening onto the proximal end edge of the tube, this connector being intended to the removable connection of one or more instruments or pipes, the connection comprising a sleeve having a tubular insertion part and an annular groove delimited radially by said insertion part and by a tubular skirt extending opposite said part insertion, the latter being able to be inserted into said proximal end to an insertion end of travel position providing, with the bottom of the groove upstream of the edge of the proximal end of the tube, a space bordered by the sleeve and closing means for closing said space and forming an annular chamber open on said end edge and into which the long channel opens tudinal, this annular chamber communicating in leaktight manner with an associated outlet orifice, characterized in that said closure means comprise a clamping sleeve capable of engaging in this groove and being screwed onto the radially internal surface of said tubular skirt for forming said annular chamber, as regards sealing both on the external periphery of the tube and on the radially internal surface of the tubular skirt, so as to clamp the tube on the insertion part. In one embodiment of the invention, said outlet orifice is located on the sleeve.
Dans un autre mode de réalisation de l'invention, ledit orifice de sortie est situé sur la douille de serrage.In another embodiment of the invention, said outlet orifice is located on the clamping sleeve.
La douille de serrage comprend alors avantageusement une partie apte à être enfilée sur le tube, une partie de vissage venant s'engager sur le manchon, et un passage formé entre ces deux parties en vue de faire communiquer ladite chambre annulaire avec ledit orifice de sortie.The clamping sleeve then advantageously comprises a part capable of being threaded onto the tube, a screwing part coming to engage on the sleeve, and a passage formed between these two parts in order to make said annular chamber communicate with said outlet orifice. .
Selon une caractéristique avantageuse de l'invention, un raccord d'extrémité selon l'invention comporte un témoin de pression intégré constitué par une membrane souple, fixée par sa périphérie sur la surface externe du raccord, obturant un orifice auxiliaire communiquant de façon étanche avec ladite chambre annulaire, et susceptible d'indiquer, en prenant une forme gonflée, que la pression régnant dans ledit canal longitudinal est supérieure à la pression ambiante.According to an advantageous characteristic of the invention, an end fitting according to the invention comprises an integrated pressure indicator constituted by a flexible membrane, fixed by its periphery to the external surface of the fitting, closing off an auxiliary orifice communicating in leaktight manner with said annular chamber, and capable of indicating, taking an inflated form, that the pressure prevailing in said longitudinal channel is greater than ambient pressure.
Dans le cas où le tube comporte plusieurs canaux longitu¬ dinaux formés dans l'épaisseur de sa paroi et débouchant sur la tranche d'extrémité proximale, ladite chambre annulaire est avantageusement cloisonnée angulairement de façon à définir une pluralité de chambres auxiliaires indépendantes communiquant chacune avec un canal longitudinal et un orifice de sortie associé.In the case where the tube comprises several longitudinal channels formed in the thickness of its wall and opening onto the proximal end edge, said annular chamber is advantageously angularly partitioned so as to define a plurality of independent auxiliary chambers each communicating with a longitudinal channel and an associated outlet.
Le cas échéant, l'un des canaux longitudinaux débouche à l'extrémité proximale du tube et les autres canaux débouchent sur des perçages axialement espacés ; le manchon et la douille de serrage sont munis de nervures annulaires situées en regard les unes des autres et de part et d'autre de chacun desdits perçages pour pincer la paroi du tuyau et former des chambres annulaires auxiliaires dans lesquelles débouchent lesdits perçages, ces chambres annulaires auxiliaires communiquant chacune de façon étanche avec un orifice de sortie associé.If necessary, one of the longitudinal channels opens at the proximal end of the tube and the other channels open onto axially spaced bores; the sleeve and the clamping sleeve are provided with annular ribs located opposite one another and on either side of each of said bores to pinch the wall of the pipe and form auxiliary annular chambers into which said bores open, these chambers auxiliary annulars each communicating in a sealed manner with an associated outlet orifice.
Avantageusement, il est prévu sur la surface externe du raccord au moins un embout de raccordement latéral communiquant avec ladite chambre annulaire et à l'extrémité duquel débouche l'orifice de sortie, et dans une réalisation particulière, le raccord d'extrémité comporte une valve anti-retour ou un robinet ιntégré(e) à l'intérieur dudit embout de raccordement latéral. D'autres caractéristiques et avantages de l'invention apparaî¬ tront à la lecture de la description détaillée non limitative de l'invention qui va suivre et à l'examen du dessin annexé sur lequel :Advantageously, there is provided on the external surface of the connection at least one lateral connection end piece communicating with said annular chamber and at the end of which opens the outlet orifice, and in a particular embodiment, the end connection includes a valve non-return valve or an integrated valve inside said lateral connection nipple. Other characteristics and advantages of the invention will appear on reading the non-limiting detailed description of the invention which follows and on examining the appended drawing in which:
- la figure 1, précédemment décrite, montre une sonde endotrachéale conforme à l'art antérieur,FIG. 1, previously described, shows an endotracheal tube according to the prior art,
- la figure 1A, précédemment décrite, illustre l'utilisation d'une sonde endotrachéale conforme à l'art antérieur,FIG. 1A, previously described, illustrates the use of an endotracheal tube according to the prior art,
- la figure 2 est une section transversale d'un tube souple à usage médical, de type connu, présentant un canal longitudinal formé dans l'épaisseur de sa paroi,FIG. 2 is a cross section of a flexible tube for medical use, of known type, having a longitudinal channel formed in the thickness of its wall,
- la figure 3 est une section transversale d'une variante, connue, de réalisation du tube représenté sur la figure 2,FIG. 3 is a cross section of a known variant of the tube shown in FIG. 2,
- la figure 4 est une vue schématique partielle montrant les différents éléments constitutifs d'un raccord d'extrémité conforme à un premier mode de réalisation de l'invention, avant montage sur un tube souple à usage médical tel que représenté sur les figures 2 ou 3,- Figure 4 is a partial schematic view showing the various components of an end fitting according to a first embodiment of the invention, before mounting on a flexible tube for medical use as shown in Figures 2 or 3,
- la figure 4A est une coupe axiale d'un manchon conforme à un premier mode de réalisation de l'invention,FIG. 4A is an axial section of a sleeve according to a first embodiment of the invention,
- la figure B est une coupe axiale d'une douille conforme à un premier mode de réalisation de l'invention,FIG. B is an axial section of a socket according to a first embodiment of the invention,
- la figure 5 est une coupe schématique axiale montrant le manchon et la douille représentés sur les figures 4A et B en position assemblée sur un tube souple à usage médical tel que représenté sur les figures 2 et 3,FIG. 5 is an axial schematic section showing the sleeve and the bushing shown in FIGS. 4A and B in the assembled position on a flexible tube for medical use as shown in FIGS. 2 and 3,
- la figure 5A est une coupe axiale schématique d'une première variante de réalisation d'un raccord d'extrémité conforme au premier mode de réalisation de l'invention,FIG. 5A is a schematic axial section of a first alternative embodiment of an end fitting according to the first embodiment of the invention,
- la figure 5B est une coupe axiale schématique d'une deuxième variante de réalisation d'un raccord d'extrémité conforme au premier mode de réalisation de l'invention, _ les figures 6A à 6D illustrent les différentes étapes du montage d'un raccord d'extrémité selon un premier mode de réalisation de l'invention sur un tube souple à usage médical,- Figure 5B is a schematic axial section of a second alternative embodiment of an end fitting according to the first embodiment of the invention, _ Figures 6A to 6D illustrate the different stages of mounting a fitting end according to a first embodiment of the invention on a flexible tube for medical use,
- la figure 7 est une vue d'ensemble d'une sonde endotrachéale équipée d'un raccord d'extrémité conforme à un premier mode de réalisation de l'invention, - la figure 7A montre la mise en place d'une sonde endotrachéale telle que représentée sur la figure 7 dans la trachée d'un patient,- Figure 7 is a view of ens e MBLE endotracheal probe equipped with an end fitting according to a first embodiment of the invention, FIG. 7A shows the placement of an endotracheal tube as shown in FIG. 7 in the trachea of a patient,
- la figure 8 illustre le raccordement amovible sur le raccord d'extrémité d'une seringue,FIG. 8 illustrates the removable connection on the end connection of a syringe,
- la figure 9 illustre le raccordement amovible sur le raccord d'extrémité d'une aiguille pour injections,FIG. 9 illustrates the removable connection on the end fitting of an injection needle,
- la figure 10 illustre le raccordement amovible sur le raccord d'extrémité d'un adaptateur pour canalisations de différents diamètres, ou de canalisations équipées de moyens de raccordement divers,FIG. 10 illustrates the removable connection on the end fitting of an adapter for pipes of different diameters, or of pipes equipped with various connection means,
- la figure 1 1 est une coupe schématique axiale montrant un manchon et une douille conformes à un deuxième mode de réalisation de l'invention, en position assemblée sur un tube souple à usage médical tel que représenté sur les figures 2 et 3,FIG. 11 is a schematic axial section showing a sleeve and a socket in accordance with a second embodiment of the invention, in the assembled position on a flexible tube for medical use as shown in FIGS. 2 and 3,
- la figure 12 est une coupe transversale montrant un tube souple comportant plusieurs canaux longitudinaux ménagés dans l'épaisseur de sa paroi,FIG. 12 is a cross-section showing a flexible tube comprising several longitudinal channels formed in the thickness of its wall,
- la figure 1 3 est une vue de côté de l'extrémité proximale du tube souple présenté sur la figure 12,FIG. 1 3 is a side view of the proximal end of the flexible tube presented in FIG. 12,
- la figure 1 est une coupe longitudinale schématique montrant un raccord d'extrémité conforme à une variante du deuxième mode de réalisation de l'invention, représenté sur la figure 1 1.- Figure 1 is a schematic longitudinal section showing an end fitting according to a variant of the second embodiment of the invention, shown in Figure 1 1.
On a représenté sur la figure 2, en section transversale, un tube souple 20 élastiquement déformable connu en lui-même, présentant un conduit central 21 et un canal longitudinal 22 formé dans l'épaisseur de sa paroi.There is shown in Figure 2, in cross section, an elastically deformable flexible tube 20 known in itself, having a central duct 21 and a longitudinal channel 22 formed in the thickness of its wall.
En variante, comme représenté sur la figure 3, le tube 20 comporte en outre une ligne 23 moulée de formation dans sa paroi et constituée d'un matériau opaque aux rayons X, de sorte que la mise en place du tube 20 dans la trachée du patient peut être suivie sur un écran en temps réel par radiographie aux rayons X.As a variant, as shown in FIG. 3, the tube 20 further comprises a line 23 molded in formation in its wall and made of a material opaque to X-rays, so that the positioning of the tube 20 in the trachea of the patient can be followed on a screen in real time by X-ray radiography.
On a représenté sur la figure un raccord d'extrémité conforme à un premier mode de réalisation de l'invention, destiné à équiper un tube souple 20 tel que précédemment décrit. Ce raccord d'extrémité se compose de deux pièces aptes à s'engager par vissage l'une dans l'autre, d'une part un manchon 30 présentant une partie d'insertion tubulaire 31 destinée à être insérée dans l'extrémité proximale 24 du tube 20 et une douille de serrage 60, destinée à être enfilée sur le tube 20 et à coopérer avec le manchon.There is shown in the figure an end fitting according to a first embodiment of the invention, intended to equip a flexible tube 20 as previously described. This end fitting consists of two parts capable of engaging by screwing into each other, on the one hand a sleeve 30 having a tubular insertion part 31 intended to be inserted in the proximal end 24 of the tube 20 and a clamping sleeve 60, intended to be threaded onto the tube 20 and to cooperate with the sleeve.
Le manchon 30 est représenté isolément, en coupe axiale sur la figure 4A. On aperçoit sur cette figure la partie d'insertion 31 du manchon 30, de forme essentiellement tubulaire, destinée à être introduite dans le conduit central 21 à l'extrémité proximale 24 du tube 20 par une extrémité avant 31 a, la partie d'insertion 31 étant de préférence comme représenté, symétrique de révolution autour d'un axe référencé X, contenu dans le plan de coupe de la figure 4A. La partie d'insertion 31 est traversée longitudinalement par un alésage 32 débouchant à l'opposé de l'extrémité avant 31 a sur un alésage 33 ménagé à l'intérieur d'un corps cylindrique 34 de plus grand diamètre externe que la partie d'insertion 31 et s'étendant selon l'axe X dans le prolongement de la partie d'insertion 31 , de sorte que l'ouverture 35 de l'extrémité avant 31 a de la partie d'insertion 31 communique de façon étanche avec une ouverture 36 prévue à l'extrémité libre du corps cylindrique 34.The sleeve 30 is shown in isolation, in axial section in FIG. 4A. We can see in this figure the insertion part 31 of the sleeve 30, of essentially tubular shape, intended to be introduced into the central duct 21 at the proximal end 24 of the tube 20 by a front end 31 a, the insertion part 31 preferably being as shown, symmetrical in revolution about an axis referenced X, contained in the section plane of FIG. 4A. The insertion part 31 is traversed longitudinally by a bore 32 opening opposite the front end 31 a on a bore 33 formed inside a cylindrical body 34 of larger external diameter than the part of insertion 31 and extending along the X axis in the extension of the insertion part 31, so that the opening 35 of the front end 31 a of the insertion part 31 communicates sealingly with an opening 36 provided at the free end of the cylindrical body 34.
De préférence, comme représenté, la surface externe 31 b de la partie d'insertion 31 du manchon 30 est conique, convergeant en direction de l'extrémité avant 31 a, en vue de faciliter la mise en place de la partie d'insertion 31 dans le tube 20, et présente un épaulement 31 d pour bloquer l'insertion du tube à une position de fin de course d'insertion. Le diamètre de là surface externe 31 b, mesuré dans le plan transversal de l'ouverture 35 est supérieur ou égal au diamètre interne du conduit central 21 , et inférieur au diamètre externe du tube 20. Lorsque la partie d'insertion 31 est insérée dans le tube 20, la paroi du tube 20 se dilate éiastiquement et la surface externe 31 b s'applique continuement, sur un secteur axial de sa périphérie, sur la paroi interne du tube 20, participant ainsi à l'étanchéité de l'assemblage du manchon 30 sur le conduit central 21.Preferably, as shown, the external surface 31 b of the insertion part 31 of the sleeve 30 is conical, converging in the direction of the front end 31 a, in order to facilitate the positioning of the insertion part 31 in the tube 20, and has a shoulder 31 d to block the insertion of the tube at an insertion end position. The diameter of the external surface 31 b, measured in the transverse plane of the opening 35 is greater than or equal to the internal diameter of the central duct 21, and less than the external diameter of the tube 20. When the insertion part 31 is inserted into the tube 20, the wall of the tube 20 expands elastically and the external surface 31 b is applied continuously, on an axial sector of its periphery, on the internal wall of the tube 20, thus participating in the sealing of the assembly of the sleeve 30 on the central duct 21.
L'épaulement 31 d servant à bloquer l'insertion du tube à une position de fin de course présente bien entendu une épaisseur inférieure à l'épaisseur de la paroi du tube 20 bordant le canal longitudinal 22, pour ne pas occulter celui-ci.The shoulder 31 d used to block the insertion of the tube at an end-of-travel position of course has a thickness less than the thickness of the wall of the tube 20 bordering the longitudinal channel 22, so as not to obscure the latter.
De préférence, le diamètre de la surface externe du corps cylindrique 34 est normalisé, typiquement à un diamètre de 15 mm, de façon à faciliter la connexion sur le manchon d'un grand nombre d'appareils. Dans ce premier mode de réalisation, le manchon comporte une gorge annulaire 37 ouverte en direction de l'extrémité avant 31 a de la partie d'insertion 31 , bordée radialement par la surface externe 31 b de la partie d'insertion 31 et par une jupe tubulaire 38 s'étendant longitudina- lement en regard de la partie d'insertion 31. La jupe tubulaire 38 centrée sur l'axe X, s'étend le long de l'axe X en direction de l'extrémité avant 31a, sur environ les deux tiers de la longueur de la partie d'insertion 31, et se positionne, lors du montage du manchon 30 sur le tube 20, en regard de la surface externe de la paroi du tube 20, comme cela sera précisé dans la suite.Preferably, the diameter of the external surface of the cylindrical body 34 is normalized, typically to a diameter of 15 mm, so as to facilitate the connection to the sleeve of a large number of devices. In this first embodiment, the sleeve has an annular groove 37 open towards the front end 31 a of the insertion part 31, bordered radially by the external surface 31 b of the insertion part 31 and by a tubular skirt 38 extending longitudinally opposite the insertion part 31. The tubular skirt 38 centered on the axis X, extends along the axis X in the direction of the front end 31a, on approximately two-thirds of the length of the insertion part 31, and is positioned, during the mounting of the sleeve 30 on the tube 20, opposite the external surface of the wall of the tube 20, as will be explained below .
De préférence, comme représenté sur la figure 4A, la jupe tubulaire 38 comporte, au niveau de son raccordement sur le reste du manchon et faisant saillie sur sa surface radialement interne 38a, un renflement annulaire 39 de forme globalement convexe vers l'extérieur. Le renflement annulaire 39 est traversé par un alésage 40 s'étendant suivant la direction d'un axe Y coupant perpendiculairement l'axe X, et contenu dans le plan de coupe de la figure 4A. Un embout 1 de raccordement latéral, est rapporté ou moulé de formation sur la surface radialement externe 38b de la jupe tubulaire 38 et s'étend selon l'axe Y dans le prolongement de l'alésage 40 de sorte que l'ouverture 42 de l'embout 41 communique de façon étanche, par l'intermédiaire de l'alésage 40, avec l'espace annulaire 43 situé entre la base 31c de la partie d'insertion 31 et le renflement annulaire 39, c'est-à-dire encore avec l'espace délimité radialement par la surface radialement interne 38a de la jupe tubulaire 38 et la surface radialement externe 31b de la partie d'insertion 31.Preferably, as shown in FIG. 4A, the tubular skirt 38 comprises, at its connection to the rest of the sleeve and projecting from its radially internal surface 38a, an annular bulge 39 of generally convex shape towards the outside. The annular bulge 39 is crossed by a bore 40 extending in the direction of an axis Y intersecting the axis X perpendicularly, and contained in the cutting plane of FIG. 4A. A nozzle 1 for lateral connection, is attached or molded in formation on the radially external surface 38b of the tubular skirt 38 and extends along the axis Y in the extension of the bore 40 so that the opening 42 of the end piece 41 communicates in leaktight manner, through the bore 40, with the annular space 43 situated between the base 31c of the insertion part 31 and the annular bulge 39, that is to say again with the space radially delimited by the radially internal surface 38a of the tubular skirt 38 and the radially external surface 31b of the insertion part 31.
On notera que la surface externe du renflement annulaire 39 s'étend en regard de la surface externe de la base 31c de la partie d'insertion 31 à une distance mesurée radialement légèrement supérieure à l'épaisseur de la paroi du tube souple 20.It will be noted that the external surface of the annular bulge 39 extends opposite the external surface of the base 31c of the insertion part 31 at a distance measured radially slightly greater than the thickness of the wall of the flexible tube 20.
La jupe tubulaire 38 est de préférence filetée sur sa surface radialement interne 38a en vue de permettre l'engagement par vissage de la douille 60 comme cela sera précisé dans la suite.The tubular skirt 38 is preferably threaded on its radially internal surface 38a in order to allow engagement by screwing of the sleeve 60 as will be explained below.
On a représenté sur la figure 4B, en coupe axiale, une douille de serrage 60 conforme à un premier mode de réalisation de l'invention, destinée à coopérer avec le manchon 30 précédemment décrit. Cette douille 60 est symétrique par rapport à un axe référencé Z, contenu dans le plan de coupe de la figure 4B. La douille 60 comporte un corps tubulaire 61 symétrique de révolution autour de l'axe Z et traversé longitudinalement par une lumière centrale 62, dont le diamètre interne minimum est légèrement supérieur ou égal au diamètre de la surface externe du tube 20, de sorte que la douille de serrage 60 peut être enfilée sur le tube 20 et coulisser librement sur celui-ci. Le corps tubulaire 61 est prolongé radialement sur sa périphérie externe et à mi-longueur environ par une collerette radiale 63 munie sur un flanc transversal à l'axe Z d'une couronne 63a présentant sur sa périphérie des pans 63b destinés à faciliter la prise en main ou à l'aide d'un outil de la douille lors du serrage sur le manchon, ainsi qu'il sera précisé dans la suite. En variante, le corps tubulaire 61 pourrait être muni de deux oreilles de serrage s'étendant à l'opposé l'une de l'autre sur la surface radialement externe du corps tubulaire 61.There is shown in Figure 4B, in axial section, a clamping sleeve 60 according to a first embodiment of the invention, intended to cooperate with the sleeve 30 previously described. This socket 60 is symmetrical with respect to an axis referenced Z, contained in the section plane of FIG. 4B. The socket 60 comprises a tubular body 61 symmetrical in revolution about the axis Z and traversed longitudinally by a central lumen 62, the minimum internal diameter of which is slightly greater than or equal to the diameter of the external surface of the tube 20, so that the clamping sleeve 60 can be threaded on the tube 20 and slide freely on the latter. The tubular body 61 is extended radially on its outer periphery and at about half its length by a radial flange 63 provided on a side transverse to the axis Z of a crown 63a having on its periphery sections 63b intended to facilitate taking in by hand or using a tool from the socket when tightening on the sleeve, as will be explained below. As a variant, the tubular body 61 could be provided with two clamping ears extending opposite one another on the radially external surface of the tubular body 61.
On notera que la couronne 63a s'étend en direction d'une extrémité axiale du corps tubulaire 61, extrémité que nous désignerons pour la suite par extrémité arrière 61a.It will be noted that the crown 63a extends in the direction of an axial end of the tubular body 61, an end which we will designate hereinafter by rear end 61a.
De préférence, comme représenté sur la figure 4B, le corps tubulaire 61 présente sur un secteur axial de sa surface interne, approximativement sur un tiers de sa longueur de part et d'autre d'un plan médian contenant la collerette 63, une surface conique 64 centrée sur l'axe Z et convergeant en direction de l'extrémité arrière 61a. L'extrémité avant du corps tubulaire 61, opposée à l'extrémité arrière 61a et qui est destinée à s'insérer dans l'espace 43 du manchon précité sera référencée 61b pour la suite.Preferably, as shown in FIG. 4B, the tubular body 61 has on an axial sector of its internal surface, approximately over a third of its length on either side of a median plane containing the collar 63, a conical surface. 64 centered on the Z axis and converging towards the rear end 61a. The front end of the tubular body 61, opposite the rear end 61a and which is intended to be inserted in the space 43 of the aforementioned sleeve will be referenced 61b for the following.
On remarquera également à l'examen de la figure 4B que le corps tubulaire 61 présente à ses extrémités axiales avant et arrière 61b et 61a une paroi de moindre épaisseur, dont la surface radialement interne s'étend en retrait par rapport à la surface conique 64 pour former deux dégagements annulaires 68 et 69.It will also be noted on examining FIG. 4B that the tubular body 61 has at its front and rear axial ends 61b and 61a a wall of reduced thickness, the radially internal surface of which recedes with respect to the conical surface 64 to form two annular clearances 68 and 69.
Plus précisément, le corps globalement cylindrique 61 présente au niveau de l'extrémité avant 61b une lèvre annulaire mince effilée 66 dont la paroi radialement interne s'étend en retrait par rapport à la surface conique 64 en formant le dégagement 69 précité. La surface externe 67 de la douille de serrage 60 s'étendant entre la base de la lèvre annulaire 66 et la collerette radiale 63 est filetée pour s'engager par vissage sur le filetage prévu sur la surface interne 38a de la jupe tubulaire 38 du manchon 30. Si l'on se reporte maintenant à la figure 5 qui montre, en coupe axiale contenant les axes X, Y et Z la douille 60 et le manchon 30 en position assemblée sur un tube 20, on remarque que la douille 60 et le manchon 30 ménagent, en regard de la tranche d'extrémité proximale 24 du tube 20 une chambre annulaire 50 dans laquelle le canal longitudinal 22 du tube 20 débouche.More specifically, the generally cylindrical body 61 has at the front end 61b a thin tapered annular lip 66, the radially internal wall of which recedes with respect to the conical surface 64, forming the above-mentioned clearance 69. The external surface 67 of the clamping sleeve 60 extending between the base of the annular lip 66 and the radial flange 63 is threaded to engage by screwing on the thread provided on the internal surface 38a of the tubular skirt 38 of the sleeve 30. If we now refer to FIG. 5 which shows, in axial section containing the axes X, Y and Z, the sleeve 60 and the sleeve 30 in the assembled position on a tube 20, it is noted that the sleeve 60 and the sleeve 30 provide, opposite the proximal end edge 24 of the tube 20, an annular chamber 50 into which the longitudinal channel 22 of the tube 20 opens.
La chambre annulaire 50 est≈formée dans l'espace 43 du fond de la gorge annulaire 37 du manchon 30 précédemment décrit en référence à la figure 4A, cet espace étant fermé transversalement à l'axe X par la tranche d'extrémité proximale 24 du tube 20. et_ la section libre de l'extrémité avant 61 b du corps globalement cylindrique 61 de la douille 60. Plus précisément, en position assemblée, la paroi du tube 20 est pincée sur un secteur axial de sa périphérie entre les surfaces coniques 64 de la douille 60 et la surface externe 31 b de la partie d'insertion 31 du manchon 30, ce qui assure l'étanchéité entre la paroi du tube 20 et ces deux surfaces. La surface externe filetée 67 de la douille 60 est engagée dans le filetage complémentaire prévu sur la surface interne 38a de la jupe tubulaire 38, la surface radialement externe de la lèvre annulaire 66 s'applique contre le renflement annulaire 39, ce qui permet l'étanchéité de la chambre annulaire vis-à-vis du filetage, et la collerette 63 vient en butée sur la section libre transversale de la jupe tubulaire 38. Le canal longitudinal 22 communique de façon étanche avec l'alésage 40, donc avec l'orifice de sortie 42 de l'embout de raccordement latéral 41.The annular chamber 50 is formed in the space 43 of the bottom of the annular groove 37 of the sleeve 30 previously described with reference to FIG. 4A, this space being closed transversely to the axis X by the proximal end edge 24 of the tube 20. et_ the free section of the front end 61 b of the generally cylindrical body 61 of the sleeve 60. More precisely, in the assembled position, the wall of the tube 20 is pinched on an axial sector of its periphery between the conical surfaces 64 of the sleeve 60 and the external surface 31b of the insertion part 31 of the sleeve 30, which ensures the seal between the wall of the tube 20 and these two surfaces. The threaded external surface 67 of the sleeve 60 is engaged in the complementary threading provided on the internal surface 38a of the tubular skirt 38, the radially external surface of the annular lip 66 is applied against the annular bulge 39, which allows the sealing of the annular chamber with respect to the thread, and the flange 63 abuts on the free transverse section of the tubular skirt 38. The longitudinal channel 22 communicates in leaktight manner with the bore 40, therefore with the orifice outlet 42 of the lateral connection end piece 41.
On notera qu'en position assemblée, l'extrémité avant 31 a de la partie d'insertion 31 se situe au niveau de la base du dégagement annulaire 68, la base du dégagement annulaire 69 se situant quant à elle au niveau du raccordement du renflement annulaire 39 sur la surface cylindrique 38a. Cette configuration garantit une bonne étanchéité entre le tube 20 et les deux pièces 30 et 60 du raccord d'extrémité conforme à ce mode de réalisation de l'invention tout en évitant un écrasement du tube entre les deux pièces, ce qui aurait comme conséquence fâcheuse l'obstruction du canal longitudinal 22. Dans une variante de réalisation du raccord d'extrémité selon l'invention, représentée sur la figure 5A, il est avantageusement prévu un témoin indicateur de pression incorporé.Note that in the assembled position, the front end 31 a of the insertion part 31 is located at the base of the annular clearance 68, the base of the annular clearance 69 being located at the connection of the bulge annular 39 on the cylindrical surface 38a. This configuration guarantees a good seal between the tube 20 and the two parts 30 and 60 of the end fitting according to this embodiment of the invention while avoiding crushing of the tube between the two parts, which would have the unfortunate consequence obstruction of the longitudinal channel 22. In an alternative embodiment of the end fitting according to the invention, shown in FIG. 5A, a built-in pressure indicator witness is advantageously provided.
Ce témoin de pression consiste en une membrane 70 en matériau souple, susceptible de prendre une allure par exemple hémisphé¬ rique telle que représentée lorsque gonflée, qui est raccordée par sa périphérie sur un méplat prévu sur la surface externe du manchon 30 et communique de façon étanche avec la chambre annulaire 50 par un alésage 44 prévu à la base de la jupe cylindrique 38, dont l'axe I est décalé angulairement autour de l'axe X par rapport à l'axe Y, de préférence de 180° comme représenté.This pressure indicator consists of a membrane 70 of flexible material, capable of assuming an appearance, for example hemispherical as shown when inflated, which is connected by its periphery to a flat provided on the external surface of the sleeve 30 and communicates in a manner watertight with the annular chamber 50 by a bore 44 provided at the base of the cylindrical skirt 38, the axis I of which is angularly offset around the axis X relative to the axis Y, preferably 180 ° as shown.
Lorsque le canal longitudinal 22 n'est pas sous pression, la membrane 70 n'est pas tendue. Au contraire, dès que la pression à l'intérieur du canal longitudinal est supérieure à la pression ambiante, la paroi de la membrane se tend et prend la forme hémisphérique représentée sur la figure 5A.When the longitudinal channel 22 is not under pressure, the membrane 70 is not stretched. On the contrary, as soon as the pressure inside the longitudinal channel is greater than the ambient pressure, the wall of the membrane tightens and takes the hemispherical shape shown in FIG. 5A.
Dans une autre variante de réalisation de l'invention, représentée sur la figure 5B, une valve anti-retour 45 de type connu est intégrée à l'embout de raccordement latéral 41. lus précisément, dans ce cas l'embout de raccordement 41 comporte deux parties, dont une première partie constituée par une pièce d'extrémité 41a rapportée sur le corps du manchon, après insertion de la valve anti-retour 45, et une deuxième partie 41 solidaire du manchon 30 et dans lequel débouche l'alésage 40. Les différentes étapes de l'assemblage d'un raccord d'extré¬ mité conforme à ce premier mode de réalisation de l'invention vont maintenant être décrites en référence aux figures 6A à 6D.In another alternative embodiment of the invention, shown in FIG. 5B, a non-return valve 45 of known type is integrated into the lateral connection end piece 41. read precisely, in this case the connection end piece 41 comprises two parts, including a first part constituted by an end piece 41a attached to the body of the sleeve, after insertion of the non-return valve 45, and a second part 41 secured to the sleeve 30 and into which the bore 40 opens. The different stages of the assembly of an end fitting according to this first embodiment of the invention will now be described with reference to FIGS. 6A to 6D.
Tout d'abord, la douille 60 est enfilée à l'extrémité proximale 24 du tube 20, orientée comme représenté sur les figures 6A et 6B, c'est-à-dire ri- z l'extrémité avant 61b tournée vers l'extrémité libre proximale 2^ J tube 20 lorsqu'elle est enfilée sur celui-ci.First of all, the sleeve 60 is threaded at the proximal end 24 of the tube 20, oriented as shown in FIGS. 6A and 6B, that is to say, the front end 61b turned towards the end proximal free 2 ^ J tube 20 when threaded thereon.
Ensuite, la partie d'insertion 31 du manchon 30 est engagée manuellement dans le conduit central du tube 20 jusqu'à ce que la tranche d'extrémité du tube 20 vienne en butée contre l'épaulement 31d et empêche le tube 20 d'être enfoncé davantage. On définit ainsi une position de fin de course d'insertion qui ménage un espace en regard de la tranche d'extrémité du tube, bordé par le manchon.Then, the insertion part 31 of the sleeve 30 is manually engaged in the central conduit of the tube 20 until the end edge of the tube 20 abuts against the shoulder 31d and prevents the tube 20 from being pressed further. We thus define a position insertion limit switch which provides space opposite the end edge of the tube, bordered by the sleeve.
Enfin, on ramène la douille 6.0 vers le manchon 30 puis celle-ci est engagée et vissée dans le manchon 30, jusqu'à ce que la collerette 63 vienne en butée sur la section libre axiale de la jupe tubulaire 38, comme représenté sur les figures 6C et 6D.Finally, the sleeve 6.0 is brought back towards the sleeve 30 then the latter is engaged and screwed into the sleeve 30, until the flange 63 comes into abutment on the axial free section of the tubular skirt 38, as shown in the Figures 6C and 6D.
Le raccord d'extrémité qui vient d'être décrit équipe avantageusement un tube souple 20 équipé d'un ballonnet gonflable 2 de type connu, pour former une sonde endotrachéale telle que représentée sur la figure 7.The end fitting which has just been described advantageously equips a flexible tube 20 fitted with an inflatable balloon 2 of known type, to form an endotracheal tube as shown in FIG. 7.
On remarquera à l'examen comparé des figures 1 et 7 ainsi que des figures 1A et 7A qu'une sonde endotrachéale équipée d'un raccord d'extrémité conforme à l'invention, notamment grâce au témoin de pression intégré 70, présente un encombrement moindre et facilite les gestes opératoires lors de l'intubation. Il est également possible, grâce à l'invention, au lieu d'alimenter en air par le canal longitudinal 22 un ballonnet gonflable 2, de procéder à des injections de produit par ce canal longitudinal 22 dont on fait déboucher alors directement l'extrémité distale dans la trachée du patient, par connexion sur l'embout 41 d'une aiguille A ou d'une seringue S, comme illustré de façon schématique sur les figures 8 et 9. On notera que dans le cas où l'injection est effectuée par l'intermédiaire d'une aiguille A, on munit de préférence l'embout 41 d'un bouchon B obturé par une membrane élastique perforable.It will be noted on a comparative examination of FIGS. 1 and 7 as well as of FIGS. 1A and 7A that an endotracheal tube equipped with an end fitting according to the invention, in particular thanks to the integrated pressure indicator 70, presents a space requirement. less and facilitates operative gestures during intubation. It is also possible, thanks to the invention, instead of supplying air via the longitudinal channel 22 with an inflatable balloon 2, to inject product through this longitudinal channel 22 from which the distal end is then opened directly. in the patient's trachea, by connection to the tip 41 of a needle A or a syringe S, as shown diagrammatically in FIGS. 8 and 9. It will be noted that in the case where the injection is carried out by through a needle A, the end piece 41 is preferably provided with a plug B closed by a perforable elastic membrane.
Si on le souhaite, on peut également ménager dans le tube 20 un deuxième canal longitudinal propre à alimenter, selon la technique habituelle, un ballonnet de gonflage, comme représenté sur la figure 9A.If desired, one can also provide in the tube 20 a second longitudinal channel suitable for supplying, according to the usual technique, an inflation balloon, as shown in FIG. 9A.
Il est également possible de munir l'embout 41 d'un adaptateur R, en vue du raccordement à cet embout d'un instrument ou d'une canalisation n'ayant pas le même diamètre, comme illustré sur la figure 10, ou en vue de connecter sur l'embout 41 des instruments ou canalisations ayant des moyens de raccordement divers.It is also possible to provide the end piece 41 with an adapter R, for the connection to this end piece of an instrument or of a pipe not having the same diameter, as illustrated in FIG. 10, or in view to connect to the end piece 41 instruments or pipes having various connection means.
On peut également proposer, sans sortir du cadre de l'invention, d'agencer différemment la douille 60 et le manchon 30.It is also possible, without departing from the scope of the invention, to arrange the socket 60 and the sleeve 30 differently.
On a représenté sur la figure 11, en coupe axiale, un raccord d'extrémité conforme à un deuxième mode de réalisation de l'invention. Ce raccord d'extrémité comprend un manchon 30" présentant une partie d'insertion 31" tubulaire s'étendant longitudinalement selon un axe X", apte à être insérée dans l'extrémité proximale du tube 20 et une douille de serrage 60" coopérant avec le manchon 30" et venant s'appliquer sur la surface externe du tube 20 pour serrer ce dernier sur la partie d'insertion 31". La partie d'insertion 31" se raccorde par l'intermédiaire d'une partie renflée 51" filetée sur sa surface externe sur une embase cylindrique 34", présentant une surface externe cylindrique de plus grand diamètre. Cette partie renflée 51" sert de butée de fin de course d'insertion de la partie d'insertion 31" dans le tube. La douille de serrage 60" comprend un corps tubulaire 61" présentant une partie 61"a apte à être enfilée sur le tube 20 à l'extrémité proximale de celui-ci et une partie de vissage 61"b venant s'engager sur la partie renflée 51" du manchon.There is shown in Figure 11, in axial section, an end fitting according to a second embodiment of the invention. This end fitting comprises a sleeve 30 "having a tubular insertion part 31" extending longitudinally along an axis X ", capable of being inserted into the proximal end of the tube 20 and a clamping sleeve 60" cooperating with the sleeve 30 "and coming to be applied on the external surface of the tube 20 to clamp the latter on the insertion part 31". The insertion part 31 "is connected via a bulged part 51" threaded on its external surface on a cylindrical base 34 ", having a cylindrical external surface of larger diameter. This bulged part 51" serves as a stop limit switch for inserting the insertion part 31 "into the tube. The clamping sleeve 60" comprises a tubular body 61 "having a part 61" capable of being threaded on the tube 20 at the proximal end of the latter and a screwing part 61 "b coming to engage on the bulged part 51" of the sleeve.
De préférence, comme représenté, la surface radialement interne du corps 61" est conique, divergeant en direction de l'extrémité libre du corps, de façon à faciliter l'engagement de la douille sur le tube. Une chambre annulaire 50" est délimitée radialement par la surface radialement interne du corps 61", la surface radialement externe de la partie d'insertion à l'endroit où celle-ci se raccorde sur la partie renflée 51", et transversalement à l'axe X", par la section libre de l'extrémité proximale du tube 20 et la partie de vissage de la douille 60". Un alésage 40" s'étend radialement entre ces deux parties selon un axe Y" perpendi¬ culaire à l'axe X" et communique avec un embout de raccordement latéral 41" prévu sur la surface externe de la douille 60". Les exemples de réalisation qui viennent d'être décrits correspondent à un tube muni d'un seul canal longitudinal, et le raccord d'extrémité ne comprend donc qu'un seul embout de raccordement latéral communiquant avec ce canal longitudinal.Preferably, as shown, the radially internal surface of the body 61 "is conical, diverging in the direction of the free end of the body, so as to facilitate the engagement of the sleeve on the tube. An annular chamber 50" is delimited radially by the radially internal surface of the body 61 ", the radially external surface of the insertion part at the place where this is connected to the bulged part 51", and transversely to the axis X ", by the free section from the proximal end of the tube 20 and the screwing part of the socket 60 ". A bore 40 "extends radially between these two parts along an axis Y" perpendicular to the axis X "and communicates with a lateral connection piece 41" provided on the external surface of the sleeve 60 ". embodiment which have just been described correspond to a tube provided with a single longitudinal channel, and the end fitting therefore only comprises a single lateral connection end piece communicating with this longitudinal channel.
Bien entendu, l'homme du métier peut proposer d'autres variantes de réalisation de raccord d'extrémité sans sortir du cadre de la présente invention, notamment en vue du raccordement à un tube souple présentant plusieurs canaux longitudinaux, par exemple un premier canal longitudinal pour l'alimentation en air d'un ballonnet gonflable et un deuxième canal longitudinal pour effectuer des injections de produits. On a représenté sur la figure 12 en section transversale un tube 100 présentant trois canaux longitudinaux formés dans l'épaisseur de sa paroi, décalés angulairement de 90° entre eux. Il peut s'agir, par exemple, d'un canal 105 pour l'alimentation en air d'un ballonnet gonflable, d'un canal 1 10 pour effectuer des injections de produits et d'un canal 120 pour surveiller la pression, connecté à un manomètre. Le tube est muni, comme représenté sur la figure 13, de deux perçages 112 et 122 communiquant respectivement avec les canaux longitudinaux 1 10 et 120, les perçages 112 et 122 étant espacés axialement entre eux et par rapport à la tranche d'extrémité 102 du tube 100, sur laquelle débouche le canal 105. On a représenté sur la figure 15 un raccord d'extrémité conforme à une variante du mode de réalisation représenté sur la figure 1 1 précédemment décrite, comprenant un manchon 130 et une douille de serrage 140 coopérant l'un avec l'autre pour définir trois chambres annulaires décalées axialement 150, 160 et 170, dans lesquelles débouchent respectivement le canal longitudinal 105, le perçage 1 12 et le perçage 122. Bien entendu, les canaux longitudinaux 110 et 120 ne s'étendent pas en direction de la tranche d'extrémité proximale 102 au-delà des perçages correspondants 1 12 et 122, ou sont obturés, de façon à ne pas déboucher sur celle-ci.Of course, a person skilled in the art can propose other alternative embodiments of an end fitting without departing from the scope of the present invention, in particular with a view to connection to a flexible tube having several longitudinal channels, for example a first longitudinal channel. for the air supply of an inflatable balloon and a second longitudinal channel for injecting products. There is shown in Figure 12 in cross section a tube 100 having three longitudinal channels formed in the thickness of its wall, angularly offset by 90 ° between them. It can be, for example, a channel 105 for the air supply of an inflatable balloon, a channel 1 10 for performing product injections and a channel 120 for monitoring the pressure, connected to a pressure gauge. The tube is provided, as shown in Figure 13, with two holes 112 and 122 communicating respectively with the longitudinal channels 1 10 and 120, the holes 112 and 122 being spaced axially therebetween and relative to the end edge 102 of the tube 100, onto which the channel 105 opens. FIG. 15 shows an end fitting according to a variant of the embodiment shown in FIG. 11 previously described, comprising a sleeve 130 and a cooperating clamping sleeve 140 with each other to define three axially offset annular chambers 150, 160 and 170, into which respectively open the longitudinal channel 105, the bore 1 12 and the bore 122. Of course, the longitudinal channels 110 and 120 do not not extend towards the proximal end edge 102 beyond the corresponding holes 1 12 and 122, or are closed, so as not to lead to it.
Les chambres annulaires 150, 160 et 170 sont fermées axialement par des nervures annulaires 132, 134, 136 et 142, 144* 146 respectivement situées en regard les unes des autres sur le manchon 130 et la douille 140 et de part et d'autre des perçages 1 12 et 122 pour pincer la paroi du tube et ainsi assurer l'étanchéité des chambres annulaires 150, 160 et 170. Les chambres annulaires 150, 160 et 170 communiquent avec des orifices de sortie associés respectivement référencés 152, 162 et 172 prévus sur la douille 140.The annular chambers 150, 160 and 170 are closed axially by annular ribs 132, 134, 136 and 142, 144 * 146 respectively located opposite one another on the sleeve 130 and the sleeve 140 and on either side of the holes 1 12 and 122 for pinching the wall of the tube and thus ensuring the tightness of the annular chambers 150, 160 and 170. The annular chambers 150, 160 and 170 communicate with associated outlet orifices respectively referenced 152, 162 and 172 provided on the socket 140.
Bien entendu, les modes de réalisation qui viennent d'être décrits en référence aux figures 1 1 et 14 peuvent être avantageusement équipés d'un témoin de pression intégré et/ou d'une valve anti-retour montée dans l'embout de raccordement latéral tels que cela a été décrit en référence au premier mode de réalisation.Of course, the embodiments which have just been described with reference to Figures 1 1 and 14 may advantageously be equipped with an integrated pressure indicator and / or a non-return valve mounted in the lateral connection end piece as described with reference to the first embodiment.
Par ailleurs, lorsque plusieurs canaux longitudinaux débou¬ chent sur l'extrémité proximale du tube, on peut proposer en outre de cloisonner angulairement les chambres annulaires 50, 50" ou 150 des raccords respectivement représentés sur les figures 1 1 et 14, de façon à délimiter plusieurs chambres auxiliaires s'étendant chacune sur un intervalle angulaire, dans chacune desquelles débouchent un canal longitudinal et un alésage cor ununiquant avec un orifice de sortie associé.Furthermore, when several longitudinal channels open out on the proximal end of the tube, it can also be proposed to angularly partition the annular chambers 50, 50 "or 150 of the connections respectively shown in FIGS. 1 1 and 14, so as to delimit several auxiliary chambers each extending over an angular interval, into each of which open a longitudinal channel and a bore cor unifying with an associated outlet orifice.
On prévoit alors, de préférence, un détrompeur sur la surface interne du tube apte à coopérer, par effet de forme, avec une encoche ou une saillie de forme complémentaire prévue sur la surface externe de la partie d'insertion du manchon, en vue de positionner angulairement de façon voulue chaque canal longitudinal en regard de la chambre auxiliaire associée.There is then preferably provided a polarizing device on the internal surface of the tube capable of cooperating, by form effect, with a notch or a projection of complementary shape provided on the external surface of the insertion part of the sleeve, in order to angularly position each longitudinal channel as desired opposite the associated auxiliary chamber.
De préférence le manchon et le raccord sont réalisés en matière plastique, avantageusement un polyacétal ou un polyamide.Preferably the sleeve and the connector are made of plastic, advantageously a polyacetal or a polyamide.
Enfin, on peut proposer d'autres moyens équivalents connus de l'homme de l'art pour assembler l'un sur l'autre le manchon et la douille de serrage, par exemple une fixation de type baïonnette. Finally, other equivalent means known to those skilled in the art can be proposed for assembling the sleeve and the clamping sleeve one on the other, for example a bayonet type fixing.

Claims

REVENDICATIONS
1/ Raccord d'extrémité proximale pour tube souple (20 ; 100) à usage médical, présentant au moins un canal longitudinal (22 ; 105) formé dans l'épaisseur de sa paroi et débouchant sur la tranche d'extrémité proximale (24 ; 102) du tube, ce raccord étant destiné au raccordement amovible d'un ou de plusieurs instruments ou canalisations, le raccord comprenant un manchon (30 ; 30" ; 130) présentant une partie d'insertion (31 ; 31 ") tubulaire et une gorge annulaire délimitée radialement par ladite partie d'insertion (31) et par une jupe tubulaire (38) s'étendant en regard de ladite partie d'insertion, cette dernière étant apte à être insérée dans ladite extrémité proximale (24) jusqu'à une position de fin de course d'insertion ménageant avec le fond de la gorge en amont de la tranche d'extrémité proximale du tube un espace bordé par le manchon et des moyens de fermeture pour fermer ledit espace et former une chambre annulaire (50 ; 50" ; 150) ouverte sur ladite tranche d'extrémité et dans laquelle débouche le canal longitudinal, cette chambre annulaire communiquant de façon étanche avec un orifice de sortie associé, caractérisé en ce que lesdits moyens de fermeture comprennent une douille de serrage apte à s'engager dans cette gorge et se visser sur la surface radialement interne (38a) de ladite jupe tubulaire pour former ladite chambre annulaire (50), en s'appliquant de façon étanche à la fois sur la périphérie externe du tube et sur la surface radialement interne (38a) de la jupe tubulaire, de manière à serrer le tube sur la partie d'insertion. 2/ Raccord d'extrémité selon la revendication 1, caractérisé en ce que ledit orifice de sortie est situé sur le manchon (30).1 / Proximal end fitting for flexible tube (20; 100) for medical use, having at least one longitudinal channel (22; 105) formed in the thickness of its wall and opening onto the proximal end edge (24; 102) of the tube, this connector being intended for the removable connection of one or more instruments or pipes, the connector comprising a sleeve (30; 30 "; 130) having a tubular insertion part (31; 31") and a annular groove delimited radially by said insertion part (31) and by a tubular skirt (38) extending opposite said insertion part, the latter being able to be inserted into said proximal end (24) up to an insertion end-of-travel position providing, with the bottom of the groove upstream of the proximal end edge of the tube, a space bordered by the sleeve and closing means for closing said space and forming an annular chamber (50; 50 "; 150) open on the said e end edge and into which the longitudinal channel opens, this annular chamber communicating in leaktight manner with an associated outlet orifice, characterized in that said closing means comprise a clamping sleeve capable of engaging in this groove and being screw on the radially internal surface (38a) of said tubular skirt to form said annular chamber (50), applying in a leaktight manner both to the external periphery of the tube and to the radially internal surface (38a) of the skirt tubular, so as to clamp the tube on the insertion part. 2 / end fitting according to claim 1, characterized in that said outlet orifice is located on the sleeve (30).
3/ Raccord d'extrémité selon la revendication 1, caractérisé en ce que ledit orifice de sortie est situé sur la douille de serrage (60" ; 140). 4/ Raccord d'extrémité selon la revendication 3, caractérisé en ce que la douille de serrage (60" ; 140) comprend un corps tubulaire (61") comprenant une partie (61 "a) apte à être enfilée sur le tube et une partie de vissage (61"b) venant s'engager sur le manchon (30"), et un passage (30") formé entre ces deux parties en vue de faire communiquer ladite chambre annulaire avec ledit orifice de sortie. 5/ Raccord d'extrémité selon l'une des revendications 1 à 4, caractérisé en ce qu'il comporte un témoin de pression intégré constitué par une membrane (70) souple, fixée par sa périphérie sur la surface externe du raccord, obturant un orifice auxiliaire communiquant de façon étanche avec ladite chambre annulaire, et susceptible d'indiquer, en prenant une forme gonflée, que la pression régnant dans ledit canal longitudinal (22) est supérieure à la pression ambiante.3 / end fitting according to claim 1, characterized in that said outlet orifice is located on the clamping sleeve (60 "; 140). 4 / end fitting according to claim 3, characterized in that the sleeve clamp (60 "; 140) comprises a tubular body (61") comprising a part (61 "a) capable of being threaded on the tube and a screwing part (61" b) engaging on the sleeve (30 "), and a passage (30") formed between these two parts for communicating said annular chamber with said outlet orifice. 5 / end fitting according to one of claims 1 to 4, characterized in that it comprises an integrated pressure indicator constituted by a flexible membrane (70), fixed by its periphery on the external surface of the fitting, closing off a auxiliary orifice sealingly communicating with said annular chamber, and capable of indicating, taking an inflated form, that the pressure prevailing in said longitudinal channel (22) is greater than ambient pressure.
6/ Raccord d'extrémité selon l'une des revendications 1 à 5, ledit tube souple comportant plusieurs canaux longitudinaux formés dans l'épaisseur de sa paroi et débouchant sur la tranche d'extrémité proximale, caractérisé en ce que ladite chambre annulaire est cloisonnée angulaire¬ ment de façon à définir une pluralité de chambres auxiliaires indépen¬ dantes communiquant chacune avec un canal longitudinal et un orifice de sortie associé. 7/ Raccord d'extrémité selon l'une des revendications 1 à 6, ledit tube souple (100) comportant plusieurs canaux longitudinaux (105, 110, 120) formés dans l'épaisseur de sa paroi, l'un (105) des canaux débouchant à l'extrémité proximale (102) du tube et les autres (1 10, 120) canaux débouchant sur des perçages (112, 122) axialement espacés, caractérisé en ce que le manchon ( 130) et la douille (140) de serrage sont munis de nervures annulaires (132, 134, 136 ; 142, 144, 146) situées en regard les unes des autres et de part et d'autre de chacun des perçages pour pincer la paroi du tuyau et former des chambres annulaires auxiliaires (160, 170) dans lesquelles débouchent lesdits perçages, ces chambres annulaires auxiliaires (160, 170) communiquant chacune de façon étanche avec un orifice de sortie associé.6 / end fitting according to one of claims 1 to 5, said flexible tube comprising several longitudinal channels formed in the thickness of its wall and opening onto the proximal end edge, characterized in that said annular chamber is partitioned angularly so as to define a plurality of independent auxiliary chambers each communicating with a longitudinal channel and an associated outlet orifice. 7 / end fitting according to one of claims 1 to 6, said flexible tube (100) comprising several longitudinal channels (105, 110, 120) formed in the thickness of its wall, one (105) of the channels opening at the proximal end (102) of the tube and the other (1 10, 120) channels opening onto axially spaced holes (112, 122), characterized in that the sleeve (130) and the clamping sleeve (140) are provided with annular ribs (132, 134, 136; 142, 144, 146) located opposite one another and on either side of each of the bores to pinch the wall of the pipe and form auxiliary annular chambers (160 , 170) into which open said holes, these auxiliary annular chambers (160, 170) each communicating in a sealed manner with an associated outlet orifice.
8/ Raccord d'extrémité selon l'une des revendications 1 à 7, caractérisé en ce qu'il est prévu sur la surface externe du raccord au moins un embout de raccordement latéral (41 ; 41") communiquant avec ladite chambre annulaire (50 ; 50") et à l'extrémité duquel débouche l'orifice de sortie.8 / end fitting according to one of claims 1 to 7, characterized in that there is provided on the external surface of the fitting at least one lateral connection end piece (41; 41 ") communicating with said annular chamber (50 ; 50 ") and at the end of which the outlet opens.
9/ Raccord d'extrémité selon la revendication 8, caractérisé en ce qu'il comporte une valve anti-retour (45) intégrée à l'intérieur dudit embout (41) de raccordement latéral. 9 / end fitting according to claim 8, characterized in that it comprises a non-return valve (45) integrated inside said end piece (41) for lateral connection.
PCT/FR1993/000578 1992-06-15 1993-06-15 Adapter for tube with multiple orifices WO1993025261A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP93913133A EP0646029A1 (en) 1992-06-15 1993-06-15 Adapter for tube with multiple orifices
JP6501198A JPH07507701A (en) 1992-06-15 1993-06-15 Adapter for multi-port tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR92/07193 1992-06-15
FR9207193A FR2692154B1 (en) 1992-06-15 1992-06-15 ADAPTER FOR MULTI-LIGHT TUBE.

Publications (1)

Publication Number Publication Date
WO1993025261A1 true WO1993025261A1 (en) 1993-12-23

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ID=9430727

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PCT/FR1993/000578 WO1993025261A1 (en) 1992-06-15 1993-06-15 Adapter for tube with multiple orifices

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EP (1) EP0646029A1 (en)
JP (1) JPH07507701A (en)
CA (1) CA2138148A1 (en)
FR (1) FR2692154B1 (en)
WO (1) WO1993025261A1 (en)

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FR2725627A1 (en) * 1994-10-12 1996-04-19 Vygon Connector for flexible tube e.g. for endotracheal probe
US6926005B1 (en) * 1999-06-08 2005-08-09 Oridion Medical Ltd. Neonatal airway adaptor
FR3044229A1 (en) * 2015-12-01 2017-06-02 Georges Boussignac OPERATION INDICATOR DEVICE FOR A RESPIRATORY ASSISTANCE APPARATUS AND APPARATUS HAVING THE SAME
CN107427669A (en) * 2015-03-03 2017-12-01 塚田医药研究株式会社 Foley's tube unit and urethra retaining saccule catheter

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JP3922739B2 (en) * 1996-04-26 2007-05-30 積水化学工業株式会社 Tracheostomy catheter

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FR3044229A1 (en) * 2015-12-01 2017-06-02 Georges Boussignac OPERATION INDICATOR DEVICE FOR A RESPIRATORY ASSISTANCE APPARATUS AND APPARATUS HAVING THE SAME
WO2017093360A1 (en) * 2015-12-01 2017-06-08 Georges Boussignac Device for indicating the operation of an assisted breathing apparatus and apparatus comprising same

Also Published As

Publication number Publication date
FR2692154A1 (en) 1993-12-17
FR2692154B1 (en) 1999-10-22
EP0646029A1 (en) 1995-04-05
JPH07507701A (en) 1995-08-31
CA2138148A1 (en) 1993-12-23

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