FR2655548A1 - Catheter with walls which are not smooth (catheter with walls which are moulded) - Google Patents

Catheter with walls which are not smooth (catheter with walls which are moulded) Download PDF

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Publication number
FR2655548A1
FR2655548A1 FR8916325A FR8916325A FR2655548A1 FR 2655548 A1 FR2655548 A1 FR 2655548A1 FR 8916325 A FR8916325 A FR 8916325A FR 8916325 A FR8916325 A FR 8916325A FR 2655548 A1 FR2655548 A1 FR 2655548A1
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Prior art keywords
catheter
moldings
walls
helical
reuendication
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FR8916325A
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French (fr)
Inventor
Cleef Van Jean-Francois
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CLEEF JEAN FRANCOIS VAN
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CLEEF JEAN FRANCOIS VAN
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Priority to FR8916325A priority Critical patent/FR2655548A1/en
Publication of FR2655548A1 publication Critical patent/FR2655548A1/en
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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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0054—Catheters; Hollow probes characterised by structural features with regions for increasing flexibility
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter

Abstract

Catheter whose walls (2) have mouldings (1), that is to say elongate elements which are hollowed or in relief and are of constant profile, these elements never completely dividing the lumen (3) of the catheter. These mouldings, which are transverse or helical, make it possible to modify the rigidity of the catheter, increase its throughput, centre a flow or an instrument (an endoscope, for example), or temporarily reduce its external diameter.

Description

Traditionnelleient les cathéters utilisés en médecine sont culindriques, à parois lisses et régulières. Ce cylindre peut être compartimenté en plusieurs canaux. Traditionally catheters used in medicine are culindrical, smooth and regular walls. This cylinder can be divided into several channels.

Certains cathéters sont même radio-opaques, formés d'éléments composites uoire pelables.Some catheters are even radio-opaque, made up of peelable or even composite elements.

Les Matériaux utilisés en médecine pour la fabrication des cathéters à usage unique sont les silicones, les fluorocarbones, les polyuinyles ou autres, Matériaux biocompatibles et moulables.Materials used in medicine for the manufacture of disposable catheters are silicones, fluorocarbons, polyuinyls or others, Biocompatible and moldable materials.

De ce fait, il est facile de fabriquer des tubes dont les parois présentent des creux et des reliefs.Therefore, it is easy to manufacture tubes whose walls have hollows and reliefs.

La présente inuention concerne des éléments qui se surajoutent aux parois du catheter pour lui donner un certain caractère; elle concerne des éléments allongés à profil constant, en creux ou en relief. Nous appelerons ces éléments des moulures. Les moulures, contrairement aux cloisons, ne divisent Jamais complètement la lumière du cathéter en canaux indépendants.The present invention relates to elements which are added to the walls of the catheter to give it a certain character; it relates to elongated elements with a constant profile, in hollow or in relief. We will call these elements moldings. Moldings, unlike partitions, never completely divide the catheter lumen into independent channels.

Ces moulures ont des profils saillants ou creux, carrés ou ronds, droits ou courbes. Un même profil peut associer plusieurs formes simples. Citons pour les creux, par exemPle, les cannelures, les stries, les gorges, les rainures, les cauetss et pour les saillies, par exemple, les baguettes, les boudins, les listels, les carrés. Des formes composées sont possibles, telles un carré et un rond, un carré et un plat formant un T par exemple.These moldings have protruding or hollow profiles, square or round, straight or curved. The same profile can associate several simple forms. We can cite for the hollows, for example, the grooves, the grooves, the grooves, the grooves, the cups and for the projections, for example, the rods, the sausages, the listels, the squares. Compound shapes are possible, such as a square and a circle, a square and a dish forming a T for example.

Ces moulures peuvent avoir une disposition uariable par rapport au grand axe du cathéter. Deux dispositions ont de nombreuses applications: les moulures parallèles à cet axe ~ les moulures disposées en hélice autour de cet axe
Citons les moulures transversales à cet axe.These moldings may have a variable arrangement with respect to the major axis of the catheter. Two arrangements have many applications: the moldings parallel to this axis ~ the moldings arranged in a helix around this axis
Let us quote the moldings transverse to this axis.

Leur nombre est variable. Elles sont souuent placées à interualles réguliers sur les parois. Their number is variable. They are often placed at regular intervals on the walls.

Les avantages d'une telle inuention sont multiples. Ils dépendent de la forme, de la disposition, du nombre des moulures, moulures adaptées à l'utilisation du cathéter.The advantages of such an invention are manifold. They depend on the shape, the arrangement, the number of moldings, moldings suitable for the use of the catheter.

~citons pour exemple les avantages suivants
1~ modifier la rigidité du cathéter
Des baguettes (i) disposées parallèlement au grand axe du cathéter sur les parois, augmentent la rigidité du cathéter et renforcent sa structure.~ let us quote for example the following advantages
1 ~ change the stiffness of the catheter
Rods (i) arranged parallel to the major axis of the catheter on the walls, increase the rigidity of the catheter and strengthen its structure.

Des baguettes disposées en hélice (FIS 1) , éuitent, en cas de courbure du cathéter, sa plicature; éuitent l écrasezent de sa lumière. Des gorges, disposées transuersalement ou en hélice, diminuent son rauon de courbure.Rods arranged in a helix (FIS 1), in the event of a curvature of the catheter, eliminate its plication; exhaust it crush its light. Gorges, arranged transversely or in a helix, reduce its curvature rauon.

2 Augmenter le débit du cathéter
Pour un même diamètre extérieur, la réalisation de gorges ( 4 ) disposées en hélice augmentent la section de la lumière (3) sans altérer les propriétés mécaniques des parois (2)
3 centrer un instrument médical
Les moulures permettent à un instrument de rester au centre de la lumière d'un cathéter pour permettre, par exemple, une répartition homogène du fluide autour de l'axe central.2 Increase catheter flow
For the same external diameter, the realization of grooves (4) arranged in a helix increase the section of the light (3) without altering the mechanical properties of the walls (2)
3 center a medical instrument
The moldings allow an instrument to remain in the center of the lumen of a catheter to allow, for example, a homogeneous distribution of the fluid around the central axis.

4 Créer facilement des Jets multiples de fluide savamment orientés à l extrémité distale du cathéter.Ceci est possible lorsque la lumière est partiellement occupée par un instruzent, un endoscope par exemple. 4 Easily create multiple jets of expertly oriented fluid at the distal end of the catheter. This is possible when the lumen is partially occupied by an instrument, such as an endoscope.

S~ Donner à un fluide un mouvement opti al.  S ~ Give a fluid an opti al movement.

Des moulures en hélice favorisent un flux tournant, rendant, par exemple, le lauage d'un liquide plus efficace.Helical moldings promote a rotating flow, making, for example, the lauage of a liquid more efficient.

6 Permettre un accrochage, un repérage sur la paroi
Une rainure au niveau de la paroi externe, par exemple, du cathéter peut permettre de faire coulisser l'attache d'un second cathéter, d'accrocher un objet
7 Diminuer transitoireent le diantre externe du cathéter pour le faire passer, par exemple, au trauers d'un introducteur pelable. 6 Allow hanging, marking on the wall
A groove at the outer wall, for example, of the catheter can allow the attachment of a second catheter to slide, to hang an object
7 Transiently decrease the external diameter of the catheter to pass it, for example, through a peelable introducer.

Soit, par exemple, un cathéter présentant quatre gorges espacées de 990 sur la paroi interne, à disposition hélicoïdale, et présentant quatre cannelures espacées de 990 sur la paroi externe, ayant le même pas hélicoïdal mais décalé de 45 . On peut aisément par une pression et par une rotation exercées sur le cathéter, diminuer transitoirement son diamètre externe, le cathéter se pliant, et s'enroulant transuersalement sur lui même. Consider, for example, a catheter having four grooves spaced 990 on the inner wall, in a helical arrangement, and having four grooves spaced 990 on the outer wall, having the same helical pitch but offset by 45. It is easy, by pressure and by rotation exerted on the catheter, to temporarily decrease its external diameter, the catheter folding, and winding transuersally on itself.

Un résultat similaire peut être obtenu auec des moulures parallèles au grand axe.A similar result can be obtained with moldings parallel to the major axis.

Ainsi, par exemple, un cathéter (F15 2 1 présente trois gorges sur sa paroi interne, culindrique; et une cannelure (5) sur sa paroi externe.Thus, for example, a catheter (F15 2 1 has three grooves on its inner wall, culindrique; and a groove (5) on its outer wall.

forges et cannelure forment, si on considère la section du cathéter, grossièrement les quatre coins d'un carré. Si on appuie sur la cannelure, et ensuite si on ramenne les deux bords du tube aplati uers la cannelure, on plie transuersalement le cathéter en quatre. Ensuite
le dépliage du cathéter peut être facilité par un mandrin.forges and groove form, if we consider the section of the catheter, roughly the four corners of a square. If one presses on the groove, and then if one brings back the two edges of the tube flattened uers the groove, one folds transuersally the catheter in four. Then
catheter unfolding can be facilitated by a mandrel.

Le nombre de moulures en creux ou en saillies pour un même résultat est uariable.The number of recessed or surface moldings for the same result is variable.

Aspects particuliers: Les profils des moulures peuvent être inconstants, uariables, périodiques, interrompus en certains endroits pour permettre, par exemple, une meilleure progression du fluide ou d'un objet, ou pour donner une souplesse différente à un segment du tube.Particular aspects: The profiles of the moldings can be inconsistent, uariables, periodic, interrupted in certain places to allow, for example, a better progression of the fluid or an object, or to give a different flexibility to a segment of the tube.

Certains profils de moulures peuvent seruir à guider un instrument, une gorge guidant un ergot, une baguette guidant une cannelure, un T guidant une rainure, par exemple. Some molding profiles can be used to guide an instrument, a groove guiding a lug, a rod guiding a groove, a T guiding a groove, for example.

~ Les moulures sont en principe fabriquées en même temps que le cathéter lui-mêre, Rien ne s'oppose à ce qu'elles le soient secondairement, par exemple, par plissage, par abrasion de la paroi initiale, par ajout d'éléments. ~ The moldings are in principle manufactured at the same time as the catheter itself, There is nothing to prevent them from being secondary, for example, by pleating, by abrasion of the initial wall, by adding elements.

~ Le cathéter peut présenter plusieurs lumières, dont une ou plusieurs peuuent être moulurées. Le cathéter peut comporter des accessoires, corme, par exemple, un ou plusieurs ballonets.~ The catheter can have several lumens, one or more of which can be molded. The catheter may include accessories, corm, for example, one or more balloons.

~ Le cathéter peut être formé d'éléments composites. ~ The catheter can be made of composite elements.

~ Les moulures de la paroi interne sont fondamentalement différentes des cloisons des cathéters traditionnels. Néanmoins les moulures peuuent limiter partiellement un espace. Certaines peuuent même cloisonner incomplètement la lumière du cathéter. L'ajout d'un instrument, d'un mandrin, d'un endoscope par exemple complète le cloisonnement de la lumière. L'espace limité par la paroi moulurée d'une part, et par l'objet ajouté d'autre part, forme alors un canal indépendant. ~ The moldings of the internal wall are fundamentally different from the partitions of traditional catheters. However, the moldings can partially limit a space. Some may even partially partition the lumen of the catheter. The addition of an instrument, a mandrel, an endoscope for example completes the partitioning of light. The space limited by the molded wall on the one hand, and by the added object on the other hand, then forms an independent channel.

A titre d exe ple: ~ Il est intéressant d'utiliser un cathéter à paroi interne moulurée en endoscopie ueineuse. En effet le cathéter porteur doit avoir un encombrement réduit au minimum, être flexible, résistant, le débit du fluide de lavage doit être important, directionnel, homogène autour de l'endoscope, ce dernier deuant être centré dans la lumière du cathéter. C'est d'ailleurs deuant les difficultés techniques de l'endoscopie ueineuse qu'est apparu le concept de cathéter à parois internes moulurées.As an example: ~ It is interesting to use a catheter with an inner wall molded in endoscopy. In fact, the carrying catheter must have a space reduced to a minimum, be flexible, resistant, the flow of the washing fluid must be large, directional, homogeneous around the endoscope, the latter having to be centered in the lumen of the catheter. It was moreover due to the technical difficulties of endous endoscopy that the concept of catheter with molded internal walls appeared.

Pour un endoscope de 858.1~-6 m. de diamètre exterieur on conçoit un cathéter porteur de 1,3.16-3 m. de diamètre extérieur, de 198.18-6 ra.  For an endoscope of 858.1 ~ -6 m. external diameter we design a catheter carrying 1.3.16-3 m. outside diameter, from 198.18-6 ra.

d'épaisseur de paroi renforcée par quatre baguettes de 196.18-6 ra.  wall thickness reinforced by four rods of 196.18-6 ra.

d'épaisseur à disposition hélicoïdale. Un tel cathéter porteur a un débit et des caractéristiques mécaniques supérieures à un cathéter à paroi lisse de 1.3.16-3 m. de diamètre extérieur et de 159.16-6 m.thick helical arrangement. Such a carrying catheter has a flow rate and mechanical characteristics superior to a smooth-walled catheter of 1.3.16-3 m. outer diameter and 159.16-6 m.

d'épaisseur de paroi.wall thickness.

De nombreuses autres applications sont possibles come, par exemple, l'endoscopie uasculaire, biliaire, utérine et tubaire, urétérale, etc; l'injection de produit de contraste, le drainage, le lavage,
l embolisation, etc. Many other applications are possible such as, for example, uascular, biliary, uterine and tubal, ureteral endoscopy, etc; injection of contrast medium, drainage, washing,
embolization, etc.

Claims (4)

REUENDICATIONSREUENDICATIONS 1 Cathéter caractérisé en ce que ses parois (2) présentent des moulures (1) (4) (5), c'est à dire des éléments allongés en creux ou en saillie, à profil constant, éléments ne divisant Jamais complètement la lumière (3) du cathéter 2 Cathéter, selon la reuendication 1, caractérisé en ce que les moulures de ses parois ont un profil inconstant, uariable, périodique: que les moulures peuuent être interrompues, sur certains segments de cathéter.1 catheter characterized in that its walls (2) have moldings (1) (4) (5), that is to say elongated hollow or protruding elements, with constant profile, elements never completely dividing the light ( 3) of the catheter 2 Catheter, according to reuendication 1, characterized in that the moldings of its walls have an inconstant, uariable, periodic profile: that the moldings can be interrupted, on certain segments of catheter. 3 Moulures, selon les reuendications 1 ou 2, caractérisées en ce que leur profil présente des formes simples carrées ou rondes, droites ou courbes; ou des formes composées de ces dernières. 3 Moldings, according to claims 1 or 2, characterized in that their profile has simple square or round shapes, straight or curved; or composite forms of these. 4 Moulures, selon les reuendications 1 ou 2s caractérisées en ce qu'elles sont parallèles ou hélicoïdales au grand axe du cathéter.4 Moldings, according to claims 1 or 2, characterized in that they are parallel or helical to the major axis of the catheter. 5 Cathéter, selon les reuendications 1 ou 2, caractérisé en ce que l'ajout d'un instrument, d'un mandrin, d'un endoscope diuise sa lumière en canaux indépendants et divise en Jets indépendants un éventuel fluide à son extrémité distale.5 Catheter, according to claims 1 or 2, characterized in that the addition of an instrument, a mandrel, an endoscope reduces its light into independent channels and divides into independent Jets a possible fluid at its distal end. 6 Cathéter, selon la reuendication 1, caractérisé en ce que ses moulures parallèles au grand axe du cathéter augmentent sa rigidité à la flexion. 6 Catheter, according to reuendication 1, characterized in that its moldings parallel to the major axis of the catheter increase its rigidity in flexion. 7~ Cathéter, selon la reuendication 1, caractérisé en ce que ses moulures hélicoïdales éuitent l'applatissement de sa lumière pendant la flexion du cathéter.7 ~ Catheter, according to reuendication 1, characterized in that its helical moldings exhaust the shine of its lumen during the bending of the catheter. 8 Moulures selon les revendications 1 ou 2 caractérisées en ce qu'elles facilitent le pliage transversal, l'allongement ou la torsion du cathéter afin de diminuer transitoirement son diamètre externe. 8 Moldings according to claims 1 or 2 characterized in that they facilitate transverse folding, elongation or twisting of the catheter in order to temporarily decrease its external diameter. 9 Moulures, selon les revendications 1 ou 2, caractérisées en ce que leurs formes permettent l'accrochage > le coulissement d'un objet, le blocage, le centrage d'un instrument.9 Moldings, according to claims 1 or 2, characterized in that their shapes allow the attachment> the sliding of an object, the blocking, the centering of an instrument. 19 Cathéter, selon les reuendications 1 ou 2 ou 4, caractérisé en ce que les moulures parallèles ou hélicoïdales de la paroi interne impriment un mouvement linéaire ou tournant à un fluide parcourant sa lumière et éventuellement sortant à son extrémité distale.  19 Catheter, according to claims 1 or 2 or 4, characterized in that the parallel or helical moldings of the internal wall give a linear or rotating movement to a fluid passing through its lumen and possibly exiting at its distal end.
FR8916325A 1989-12-11 1989-12-11 Catheter with walls which are not smooth (catheter with walls which are moulded) Withdrawn FR2655548A1 (en)

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WO1993024170A1 (en) * 1992-05-28 1993-12-09 Innovative Technologies Limited Intubation devices
WO1994001162A2 (en) * 1992-07-06 1994-01-20 Catheter Imaging Systems Steerable catheter
WO1996016690A1 (en) * 1994-11-29 1996-06-06 Becton, Dickinson And Company A catheter having wall support to prevent collapse thereof
EP0692276A3 (en) * 1994-07-11 1997-05-07 Terumo Corp Catheter tube and a method of processing the inner surface of a tube
EP0784990A3 (en) * 1996-01-17 1997-08-20 Becton Dickinson Co
EP0824932A3 (en) * 1996-08-23 1998-06-10 Becton, Dickinson and Company Arterial catheter and catheter/needle assembly with improved flow characteristics and method for its use
USD398986S (en) 1996-01-16 1998-09-29 Catheter Imaging Systems, Inc. Handle interface for steerable catheter
WO1998044978A1 (en) * 1997-04-09 1998-10-15 Hans Haindl Catheter for measuring chemical parameters, in particular for introducing into biological tissues, liquids or the like
US5846221A (en) 1996-02-09 1998-12-08 Catheter Imaging Systems, Inc. Steerable catheter having disposable module and sterilizable handle and method of connecting same
US5857996A (en) 1992-07-06 1999-01-12 Catheter Imaging Systems Method of epidermal surgery
USD405881S (en) 1996-01-16 1999-02-16 Catheter Imaging Systems, Inc. Handle for steerable catheter
US6007531A (en) 1995-11-21 1999-12-28 Catheter Imaging Systems, Inc. Steerable catheter having disposable module and sterilizable handle and method of connecting same
US6537253B1 (en) 1997-06-18 2003-03-25 Hans Haindl Cannular arrangement
WO2003045279A1 (en) * 2001-11-21 2003-06-05 Tayside Flow Technologies Limited A helical formation for a conduit
GB2457468A (en) * 2008-02-13 2009-08-19 Probe Scient Ltd Molecular exchange device
US8790586B2 (en) 2006-09-28 2014-07-29 Probe Scientific Limited Molecular exchange device
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US10064697B2 (en) 2008-10-06 2018-09-04 Santa Anna Tech Llc Vapor based ablation system for treating various indications
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US10695126B2 (en) 2008-10-06 2020-06-30 Santa Anna Tech Llc Catheter with a double balloon structure to generate and apply a heated ablative zone to tissue
US11331140B2 (en) 2016-05-19 2022-05-17 Aqua Heart, Inc. Heated vapor ablation systems and methods for treating cardiac conditions
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Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024170A1 (en) * 1992-05-28 1993-12-09 Innovative Technologies Limited Intubation devices
US6470209B2 (en) 1992-07-06 2002-10-22 Catheter Imaging Systems, Inc. System for enhancing visibility in the epidural space
US6010493A (en) 1992-07-06 2000-01-04 Catheter Imaging Systems Method of epidural surgery
US5437636A (en) * 1992-07-06 1995-08-01 Catheter Imaging Systems Steerable catheter with fiberoptic scope inserting means
WO1994001162A2 (en) * 1992-07-06 1994-01-20 Catheter Imaging Systems Steerable catheter
US5531687A (en) * 1992-07-06 1996-07-02 Catheter Imaging Systems Steerable catheter
US5857996A (en) 1992-07-06 1999-01-12 Catheter Imaging Systems Method of epidermal surgery
US6464682B1 (en) 1992-07-06 2002-10-15 Catheter Imaging Systems, Inc. Method of epidural surgery
WO1994001162A3 (en) * 1992-07-06 1994-03-17 Catheter Imaging Systems Steerable catheter
US5681296A (en) * 1994-07-11 1997-10-28 Terumo Kabushiki Kaisha Catheter tube and a method of processing the inner surface of a tube
US5885508A (en) * 1994-07-11 1999-03-23 Terumo Kabushiki Kaisha Catheter tube and a method of processing the inner surface of a tube
EP0692276A3 (en) * 1994-07-11 1997-05-07 Terumo Corp Catheter tube and a method of processing the inner surface of a tube
WO1996016690A1 (en) * 1994-11-29 1996-06-06 Becton, Dickinson And Company A catheter having wall support to prevent collapse thereof
US5860953A (en) 1995-11-21 1999-01-19 Catheter Imaging Systems, Inc. Steerable catheter having disposable module and sterilizable handle and method of connecting same
US6007531A (en) 1995-11-21 1999-12-28 Catheter Imaging Systems, Inc. Steerable catheter having disposable module and sterilizable handle and method of connecting same
USD405881S (en) 1996-01-16 1999-02-16 Catheter Imaging Systems, Inc. Handle for steerable catheter
USD398986S (en) 1996-01-16 1998-09-29 Catheter Imaging Systems, Inc. Handle interface for steerable catheter
EP0784990A3 (en) * 1996-01-17 1997-08-20 Becton Dickinson Co
US5776115A (en) * 1996-01-17 1998-07-07 Becton Dickinson And Company Catheter having a gear-shaped lumen to avert the elimination of fluid flow therein
US5846221A (en) 1996-02-09 1998-12-08 Catheter Imaging Systems, Inc. Steerable catheter having disposable module and sterilizable handle and method of connecting same
EP0824932A3 (en) * 1996-08-23 1998-06-10 Becton, Dickinson and Company Arterial catheter and catheter/needle assembly with improved flow characteristics and method for its use
US6616625B2 (en) 1997-04-09 2003-09-09 Hans Haindl Catheter for measuring chemical parameters, in particular for introducing biological tissues, liquids or the like
WO1998044978A1 (en) * 1997-04-09 1998-10-15 Hans Haindl Catheter for measuring chemical parameters, in particular for introducing into biological tissues, liquids or the like
US6537253B1 (en) 1997-06-18 2003-03-25 Hans Haindl Cannular arrangement
US7115111B2 (en) 1997-06-18 2006-10-03 Disetronic Licensing Ag Cannula system
WO2003045279A1 (en) * 2001-11-21 2003-06-05 Tayside Flow Technologies Limited A helical formation for a conduit
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