WO2000041742A1 - Medico-surgical discharge cannula - Google Patents

Medico-surgical discharge cannula Download PDF

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Publication number
WO2000041742A1
WO2000041742A1 PCT/FR2000/000048 FR0000048W WO0041742A1 WO 2000041742 A1 WO2000041742 A1 WO 2000041742A1 FR 0000048 W FR0000048 W FR 0000048W WO 0041742 A1 WO0041742 A1 WO 0041742A1
Authority
WO
WIPO (PCT)
Prior art keywords
cannula
grooves
channel
stylet
distal end
Prior art date
Application number
PCT/FR2000/000048
Other languages
French (fr)
Inventor
Francis Bartolome
Original Assignee
Francis Bartolome
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR9900361A external-priority patent/FR2788222B1/en
Application filed by Francis Bartolome filed Critical Francis Bartolome
Priority to JP2000593351A priority Critical patent/JP2002534222A/en
Priority to EP00900559A priority patent/EP1144020A1/en
Priority to AU30527/00A priority patent/AU3052700A/en
Publication of WO2000041742A1 publication Critical patent/WO2000041742A1/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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3659—Cannulae pertaining to extracorporeal circulation
    • 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips
    • 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
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/12—Blood circulatory system
    • A61M2210/125—Heart

Definitions

  • the invention relates to a medico-surgical discharge cannula of the type comprising, in its axial part, a channel provided, at its distal end, with a drainage opening; at the periphery of its distal part, a plurality of drainage orifices opening into said channel; at its proximal end, a connector capable of connecting the cannula to a suction tube; said cannula being associated with a stylet-mandrel capable of being inserted therein to give it the rigidity necessary for its adequate positioning in the area to be drained.
  • the depositor has designed a discharge cannula which is essentially characterized in that the peripheral drainage orifices open, outside the cannula, into the bottom of grooves made at the periphery of the distal part of said cannula.
  • the grooves are in the form of a spiral;
  • the distal end of the drainage channel is conical and tapering from inside to outside.
  • FIG. 1 is a top view of the cannula according to the invention.
  • - Figure 2 is a side view of said cannula;
  • - Figure 3 is a view, in longitudinal section, of the distal part of the cannula;
  • FIG. 4 is a partial sectional view of a drain for the drainage of intracavitary effused blood.
  • the cannula shown in the figures essentially comprises:
  • a connector (5) capable of connecting the cannula (1) to a suction tube.
  • the cannula is associated with a stylet stylet capable of being inserted therein to give it the rigidity necessary for its adequate positioning in the heart.
  • the drainage orifices (4) open, outside the cannula, into the bottom of grooves (6) produced at the periphery of the distal part of the cannula (1). This particular feature aims to avoid sticking of the vascular wall during aspiration.
  • the grooves (6) can be made in the form of a spiral.
  • the angle formed by the grooves (6) and the longitudinal generatrices of the cannula (1) is advantageously between 20 ° and 40 ° including 30 °. This particular feature aims to promote the evacuation of blood flow.
  • the material used to make the distal part of the cannula (1) is shape memory such that, when the stylet-mandrel is introduced into the cannula (1), the grooves (6) are parallel to the longitudinal generatrices of said cannula and, when said stylet-mandrel is removed therefrom, the grooves regain their spiral shape.
  • the distal end (3) of the channel (2) is conical and of decreasing section from the inside to the outside.
  • the outer distal end (7) of the cannula is bevelled or rounded in order to allow better introduction thereof and a reduction traumatic areas crossed.
  • the cannula can include:
  • a first reference ring (8) indicating the position of the end of the cannula in the left atrium of the heart for example
  • - A second reference ring (9) indicating the position of said end in the left ventricle of the heart for example.
  • the cannula can be made of silicone or polyvinyl chloride depending on the flexibility and biocompatibility sought but also depending on the operating technique chosen by the surgeon.
  • silicone or polyvinyl chloride depending on the flexibility and biocompatibility sought but also depending on the operating technique chosen by the surgeon.
  • the cannula is 300 mm long, the first ring is located 70 mm from the distal end and the second 50 mm from the first in the proximal direction;
  • the cannula has an outside diameter of 7 mm and the canal a diameter of 4 mm, the corresponding drainage opening having a diameter of 3 mm;
  • the grooves, cylindrical fraction have a diameter of 2 mm and the corresponding orifices have a diameter of 1 mm;
  • FIG. 4 represents more particularly a drain (10) for the drainage of intracavitary effused blood (in abdominal or muscular application) which also comprises grooves (6) and drainage orifices (4). It further comprises an enlarged area (11) in the shape of a warhead, and a removable holding device (12) on the body wall (13) passed through.

Abstract

The invention concerns a medico-surgical cannula (1) comprising an axial channel (2) provided with a discharge orifice (3), a plurality of peripheral discharge orifices (4) and a proximal connector (5). The invention is essentially characterised in that the discharge orifices (4) emerge into the base of the grooves (6) provided at the periphery of the distal part (3) of the cannula channel (2). The invention is further characterised in that the grooves (6) are in spiral form and the channel (2) distal end (3) is tapered with decreasing cross-section from inside outwards.

Description

CANULE DE DECHARGE MEDICO-CHIRURGICALE MEDICO-SURGICAL DISCHARGE CANNULA
DESCRIPTIONDESCRIPTION
L'invention est relative à une canule de décharge médico-chirurgicale du genre comportant, dans sa partie axiale, un canal pourvu, à son extrémité distale, d'une ouverture de drainage; à la périphérie de sa partie distale, une pluralité d'orifices de drainage débouchant dans ledit canal; à son extrémité proximale, un connecteur apte à relier la canule à un tube d'aspiration; ladite canule étant associée à un stylet- mandrin apte à être inséré dans celle-ci pour lui procurer la rigidité nécessaire à son positionnement adéquate dans la zone à drainer.The invention relates to a medico-surgical discharge cannula of the type comprising, in its axial part, a channel provided, at its distal end, with a drainage opening; at the periphery of its distal part, a plurality of drainage orifices opening into said channel; at its proximal end, a connector capable of connecting the cannula to a suction tube; said cannula being associated with a stylet-mandrel capable of being inserted therein to give it the rigidity necessary for its adequate positioning in the area to be drained.
Les canules connues du genre en question présentent toutes l'incon- vénient majeur lié au collage de la paroi vasculaire contre les orifices de drainage. Celui-ci a pour conséquence une irrégularité dans l'aspiration du sang contenu dans les cavités concernées gênant considérablement le travail du chirurgien.The known cannulas of the genus in question all have the major drawback associated with the bonding of the vascular wall against the drainage orifices. This results in an irregularity in the aspiration of blood contained in the cavities concerned considerably hampering the work of the surgeon.
C'est dans le but de remédier à cet inconvénient majeur, que le déposant a conçu une canule de décharge qui se caractérise essentiellement en ce que les orifices de drainage périphériques débouchent, à l'extérieur de la canule, dans le fond de canelures réalisées à la périphérie de la partie distale de ladite canule. Selon diverses particularités de l'invention : - les canelures sont en forme de spirale;It is with the aim of remedying this major drawback that the depositor has designed a discharge cannula which is essentially characterized in that the peripheral drainage orifices open, outside the cannula, into the bottom of grooves made at the periphery of the distal part of said cannula. According to various features of the invention: - the grooves are in the form of a spiral;
- l'extrémité distale du canal de drainage est conique et à section décroissante de l'intérieur vers l'extérieur.- the distal end of the drainage channel is conical and tapering from inside to outside.
Les caractéristiques et les avantages de l'invention vont apparaître plus clairement à la lecture de la description détaillée qui suit d'au moins un mode de réalisation préféré de celle-ci donné à titre d'exemple non limitatif et représenté aux dessins annexés. Sur ces dessins :The characteristics and advantages of the invention will appear more clearly on reading the following detailed description of at least one preferred embodiment of the latter given by way of non-limiting example and shown in the accompanying drawings. In these drawings:
- la figure 1 est une vue de dessus de la canule selon l'invention;- Figure 1 is a top view of the cannula according to the invention;
- la figure 2 est une vue de profil de ladite canule; - la figure 3 est une vue, en coupe longitudinale, de la partie distale de la canule;- Figure 2 is a side view of said cannula; - Figure 3 is a view, in longitudinal section, of the distal part of the cannula;
- la figure 4 est une vue en coupe partielle d'un drain pour le drainage du sang épanché intracavitaire. La canule représentée aux figures comporte essentiellement :- Figure 4 is a partial sectional view of a drain for the drainage of intracavitary effused blood. The cannula shown in the figures essentially comprises:
- dans sa partie axiale, un canal (2) pourvu, à son extrémité distale, d'une ouverture de drainage (3);- in its axial part, a channel (2) provided, at its distal end, with a drainage opening (3);
- à la périphérie de sa partie distale, une pluralité d'orifices de drainage (4) débouchant dans ledit canal (2);- at the periphery of its distal part, a plurality of drainage orifices (4) opening into said channel (2);
- à son extrémité proximale, un connecteur (5) apte à relier la canule (1) à un tube d'aspiration.- at its proximal end, a connector (5) capable of connecting the cannula (1) to a suction tube.
La canule est associée à un stylet-mandrin apte à être inséré dans celle- ci pour lui procurer la rigidité nécessaire à son positionnement adéquate dans le coeur.The cannula is associated with a stylet stylet capable of being inserted therein to give it the rigidity necessary for its adequate positioning in the heart.
Les orifices de drainage (4) débouchent, à l'extérieur de la canule, dans le fond de canelures (6) réalisées à la périphérie de la partie distale de la canule (1). Cette particularité de réalisation a pour but d'éviter le collage de la paroi vasculaire en cours d'aspiration.The drainage orifices (4) open, outside the cannula, into the bottom of grooves (6) produced at the periphery of the distal part of the cannula (1). This particular feature aims to avoid sticking of the vascular wall during aspiration.
Les canelures (6) peuvent être réalisées en forme de spirale. L'angle formé par les canelures (6) et les génératrices longitudinales de la canule (1) est compris avantageusement entre 20° et 40° dont notamment 30°. Cette particularité de réalisation a pour but de favoriser l'évacuation du flux sanguin.The grooves (6) can be made in the form of a spiral. The angle formed by the grooves (6) and the longitudinal generatrices of the cannula (1) is advantageously between 20 ° and 40 ° including 30 °. This particular feature aims to promote the evacuation of blood flow.
Le matériau utilisé pour réaliser la partie distale de la canule (1) est à mémoire de forme de telle manière que, lorsque le stylet-mandrin est introduit dans la canule (1), les canelures (6) sont parallèles aux génératrices longitudinales de ladite canule et, lorsque ledit stylet- mandrin est retiré de celle-ci, les canelures retrouvent leur forme en spirale.The material used to make the distal part of the cannula (1) is shape memory such that, when the stylet-mandrel is introduced into the cannula (1), the grooves (6) are parallel to the longitudinal generatrices of said cannula and, when said stylet-mandrel is removed therefrom, the grooves regain their spiral shape.
Cette particularité de réalisation permet une introduction souple et non traumatisante de la canule dans le coeur ou les vaisseaux. L'extrémité distale (3) du canal (2) est conique et à section décroissante de l'intérieur vers l'extérieur.This particular feature allows a flexible and non-traumatic introduction of the cannula into the heart or the vessels. The distal end (3) of the channel (2) is conical and of decreasing section from the inside to the outside.
Cette particularité de réalisation permet une meilleure aspiration car elle élimine la compétition entre les flux sanguins. L'extrémité distale extérieure (7) de la canule est biseautée ou arrondie afin de permettre une meilleure introduction de celle-ci et une diminution traumatique des zones traversées. La canule peut comporter :This special feature allows better suction because it eliminates competition between blood flows. The outer distal end (7) of the cannula is bevelled or rounded in order to allow better introduction thereof and a reduction traumatic areas crossed. The cannula can include:
- une première bague-repère (8) indiquant la position de l'extrémité de la canule dans l'oreillette gauche du coeur par exemple; - une deuxième bague-repère (9) indiquant la position de ladite extrémité dans le ventricule gauche du coeur par exemple.- A first reference ring (8) indicating the position of the end of the cannula in the left atrium of the heart for example; - A second reference ring (9) indicating the position of said end in the left ventricle of the heart for example.
La canule peut être réalisée en silicone ou en chlorure de polyvinyle en fonction de la souplesse et de la biocompatibilité recherchée mais également en fonction de la technique opératoire retenue par le chirurgien . Dans la réalisation préférée de l'invention :The cannula can be made of silicone or polyvinyl chloride depending on the flexibility and biocompatibility sought but also depending on the operating technique chosen by the surgeon. In the preferred embodiment of the invention:
- la canule a une longueur de 300 mm, la première bague est située à 70 mm de l'extrémité distale et la deuxième à 50 mm de la première dans le sens proximal;- the cannula is 300 mm long, the first ring is located 70 mm from the distal end and the second 50 mm from the first in the proximal direction;
- la canule a un diamètre extérieur de 7 mm et le canal un diamètre de 4 mm, l'ouverture de drainage correspondante ayant un diamètre de 3 mm;- The cannula has an outside diameter of 7 mm and the canal a diameter of 4 mm, the corresponding drainage opening having a diameter of 3 mm;
- les canelures, fraction cylindriques, ont un diamètre de 2 mm et les orifices correspondants ont un diamètre de 1 mm;- the grooves, cylindrical fraction, have a diameter of 2 mm and the corresponding orifices have a diameter of 1 mm;
- les canelures sont au nombre de 3;- there are 3 grooves;
- le nombre d'orifices par canelure est de 6. La figure 4 représente plus particulièrement un drain (10) pour le drainage de sang épanché intracavitaire (en application abdominale ou musculaire) qui comporte égalment des canelures (6) et des orifices de drainage (4). Il comporte, en outre, une zone élargie (11), en forme d'ogive, et un dispositif de maintien amovible (12) sur la paroi corporelle (13) traversée.- the number of orifices per groove is 6. FIG. 4 represents more particularly a drain (10) for the drainage of intracavitary effused blood (in abdominal or muscular application) which also comprises grooves (6) and drainage orifices (4). It further comprises an enlarged area (11) in the shape of a warhead, and a removable holding device (12) on the body wall (13) passed through.
Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés pour lesquels on pourra prévoir d'autres variantes, en particulier dans : - la nature des matériaux utilisés;Of course, the invention is not limited to the embodiments described and shown for which other variants can be provided, in particular in: - the nature of the materials used;
- le nombre de canelures et d'orifices de drainage;- the number of grooves and drainage holes;
- les dimensions des diverses parties de la canule;- the dimensions of the various parts of the cannula;
- les types de stylets-mandrins utilisés.- the types of stylet chucks used.
En outre, elle est également utilisable en chirurgie cardiaque via la veine fémorale. In addition, it can also be used in cardiac surgery via the femoral vein.

Claims

WO 00/41742 _4_ PCT/FR00/00048 - WO 00/41742 _4_ PCT / FR00 / 00048 -
REVENDICATIONS
1- Canule de décharge médico-chirurgicale (1) du genre comportant, dans sa partie axiale, un canal (2) pourvu, à son extrémité distale, d'une ouverture de drainage (3); à la périphérie de sa partie distale, une pluralité d'orifices de drainage (4) débouchant dans ledit canal (2); à son extrémité proximale, un connecteur (5) apte à relier la canule (1) à un tube d'aspiration; caractérisée en ce que les orifices de drainage (4) débouchent, à l'extérieur de la canule, dans le fond de canelures (6) réalisées à la périphérie de la partie distale de la canule (1) et en ce que lesdites canelures (6) sont en forme de spirale.1- Medico-surgical discharge cannula (1) of the type comprising, in its axial part, a channel (2) provided, at its distal end, with a drainage opening (3); at the periphery of its distal part, a plurality of drainage orifices (4) opening into said channel (2); at its proximal end, a connector (5) capable of connecting the cannula (1) to a suction tube; characterized in that the drainage orifices (4) open, outside the cannula, into the bottom of grooves (6) formed on the periphery of the distal part of the cannula (1) and in that said grooves ( 6) are spiral-shaped.
2- Canule, selon la revendication 1, caractérisée en ce que l'angle formé par les canelures (6) et les génératrices longitudinales de la canule (1) est compris entre 20° et 40°.2- Cannula according to claim 1, characterized in that the angle formed by the grooves (6) and the longitudinal generatrices of the cannula (1) is between 20 ° and 40 °.
3- Canule, selon la revendication 1, caractérisée en ce que l'extrémité distale (3) du canal (2) est conique et à section décroissante de l'intérieur vers l'extérieur.3- Cannula according to claim 1, characterized in that the distal end (3) of the channel (2) is conical and of decreasing section from the inside to the outside.
4- Canule, selon la revendication 1, caractérisée en ce que l'extrémité distale extérieure (7) de celle-ci est biseautée ou arrondie.4- Cannula according to claim 1, characterized in that the outer distal end (7) thereof is bevelled or rounded.
5- Canule, selon la revendication 1, caractérisée en ce que le matériau utilisé pour réaliser la partie distale de celle-ci est à mémoire de forme de telle manière que, lorsqu'elle est associée à un stylet- mandrin, les canelures (6) sont parallèles aux génératrices longitudinales de ladite canule lorsque ledit stylet-mandrin est inséré dans la canule (1) et retrouvent leur forme en spirale lorsque ledit stylet-mandrin est retiré de celle-ci.5- Cannula according to claim 1, characterized in that the material used to produce the distal part thereof is shape memory so that, when associated with a stylet stylet, the grooves (6 ) are parallel to the longitudinal generatrices of said cannula when said stylet-mandrel is inserted into the cannula (1) and regain their spiral shape when said stylet-mandrel is withdrawn therefrom.
6- Canule, selon la revendication 1, caractérisée en ce que le drain (10) comporte une zone élargie (11), en forme d'ogive, et un dispositif de maintien amovible (12) sur la paroi corporelle (13) traversée.6- Cannula according to claim 1, characterized in that the drain (10) has an enlarged area (11), in the form of a warhead, and a removable holding device (12) on the body wall (13) through.
7- Canule, selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est réalisée en une matière choisie parmi le silicone ou le chorure de polyvinyle. 7- Cannula according to any one of the preceding claims, characterized in that it is made of a material chosen from silicone or polyvinyl choride.
PCT/FR2000/000048 1999-01-12 2000-01-11 Medico-surgical discharge cannula WO2000041742A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000593351A JP2002534222A (en) 1999-01-12 2000-01-11 Drainage cannula for medical surgery
EP00900559A EP1144020A1 (en) 1999-01-12 2000-01-11 Medico-surgical discharge cannula
AU30527/00A AU3052700A (en) 1999-01-12 2000-01-11 Medico-surgical discharge cannula

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9900361A FR2788222B1 (en) 1999-01-12 1999-01-12 LEFT CARDIO-VENTRICULAR DISCHARGE CANNULA
FR99/00361 1999-08-12
FR99/10462 1999-08-12
FR9910462A FR2788223B1 (en) 1999-01-12 1999-08-12 MEDICO-SURGICAL DISCHARGE CANNULA

Publications (1)

Publication Number Publication Date
WO2000041742A1 true WO2000041742A1 (en) 2000-07-20

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Application Number Title Priority Date Filing Date
PCT/FR2000/000048 WO2000041742A1 (en) 1999-01-12 2000-01-11 Medico-surgical discharge cannula

Country Status (5)

Country Link
EP (1) EP1144020A1 (en)
JP (1) JP2002534222A (en)
AU (1) AU3052700A (en)
FR (1) FR2788223B1 (en)
WO (1) WO2000041742A1 (en)

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FR2240026A1 (en) * 1973-08-06 1975-03-07 Rhone Poulenc Sa Drain for medical use - has external lengthwise groove communicating with interior passage
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US4950232A (en) * 1987-08-11 1990-08-21 Surelab Superior Research Laboratories Cerebrospinal fluid shunt system

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EP1144020A1 (en) 2001-10-17
AU3052700A (en) 2000-08-01
FR2788223B1 (en) 2001-09-21
FR2788223A1 (en) 2000-07-13
JP2002534222A (en) 2002-10-15

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