WO2002051490A1 - Ballonnet de catheter de dilatation de ballonnet et ballonnet d'implantation de stent - Google Patents

Ballonnet de catheter de dilatation de ballonnet et ballonnet d'implantation de stent Download PDF

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Publication number
WO2002051490A1
WO2002051490A1 PCT/CA2000/001573 CA0001573W WO02051490A1 WO 2002051490 A1 WO2002051490 A1 WO 2002051490A1 CA 0001573 W CA0001573 W CA 0001573W WO 02051490 A1 WO02051490 A1 WO 02051490A1
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WO
WIPO (PCT)
Prior art keywords
balloon
catheter
catheter tube
central portion
end wall
Prior art date
Application number
PCT/CA2000/001573
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English (en)
Inventor
Khalid Al-Saadon
Original Assignee
Khalid Al-Saadon
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 Khalid Al-Saadon filed Critical Khalid Al-Saadon
Priority to PCT/CA2000/001573 priority Critical patent/WO2002051490A1/fr
Publication of WO2002051490A1 publication Critical patent/WO2002051490A1/fr

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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
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1034—Joining of shaft and balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/958—Inflatable balloons for placing stents or stent-grafts
    • 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
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters

Definitions

  • This invention is directed to a catheter that utilizes a balloon to dilate structures or stenosis within the human body. More particularly, this invention relates generally to improvements in apparatus for uniformly implanting a stent and, more particularly, to improved uniform stent implantation systems wherein radial expansion is controlled.
  • the stent implantation system includes a balloon catheter having a balloon with a novel end wall configuration which promotes more uniform radial expansion of the balloon, and hence the associated stent.
  • PTCA percutaneous transluminal coronary angioplasty
  • This procedure can be used, for example, to reduce arterial build-up of cholesterol fats or atherosclerotic plaque.
  • the first marketable PTCA apparatus consisted of a small catheter with a single balloon port and no central lumen, that is, a so-called "fixed wire" system, which terminated in lateral openings at the distal end thereof.
  • This system which is the subject of U.S. Pat. No. 4,195,637, was designed by Dr. Gruntzig.
  • 4,195,637 comprises a balloon dilatation catheter and a low friction guide catheter consisting of one tubular member fitted into a more rigid, shrunk-on tubular member that is not co-extensive.
  • the distal end of the balloon dilatation catheter has a flexible tip advantageously fabricated from a spring steel wire.
  • the catheter is subsequently tracked over the guide wire to the stenosis.
  • the balloon at the distal end of the catheter is then inflated causing the site of the stenosis to widen. After the balloon is deflated, the catheter is withdrawn over the guidewire and another catheter can be slid into place over it if necessary.
  • the guide wire In a particular procedure for exchanging catheters, the guide wire is left in place to protect the artery during the exchange.
  • the guide wire is left in the artery because of complications that can arise when removing the guide wire, e.g., when the distal tip of the guide wire lifts a lesion flap, when the vessel spasms or abruptly closes making wire advancement impossible, or when placement of the guide wire simply takes too much time.
  • the wire in this procedure is typically maintained in the vessel while the catheter exchange takes place.
  • the first technique is used with catheters in which the guide wire lumen extends the full length of the catheter shaft. These are often referred to as "over-the-wire" catheters.
  • guide wire position is maintained by holding the guide wire at its proximal end.
  • the guide wire must be long enough so that the proximal end of the guide wire can be held in place until the distal end of the catheter exits the patient.
  • the grip at the proximal end of the guide wire may be withdrawn and the guide wire can be firmly held distal to the distal end of the catheter.
  • the catheter can then be completely removed from the patient. The same procedure is performed in reverse to insert a different catheter into the patient.
  • over-the-wire catheters are shown in the following patents: in U.S. Pat. No.4,917,666 issued to Solar and Roucher; U.S. Pat. No. 4,323,071 issued to Simpson et al.
  • the balloon has a generally cylindrical shape, positioned in a concentric manner in relation to the catheter shaft, and bonded distally and proximally to the shaft, as shown in Fig. 1A.
  • the material from which the balloons are made renders them one of the following three categories: compliant, which are relatively stretchable; non-compliant, which are not stretchable; and semi- compliant, which have moderate stretchability.
  • inflation of a concentrically mounted balloon as shown in Fig. 1 B results in a uniform force circumferentially applied to the stenotic lesion.
  • the structure or morphology of the lesion is rarely uniform so as to permit uniform radial expansion as shown in Fig.
  • a physician can implant an intravascular prosthesis, generally called a stent, to maintain vascular patency inside the artery at the site of the lesion.
  • Stents are also used to repair vessels having a flap or dissection or to generally strengthen a weakened section of a vessel.
  • the stent is expandable to a larger diameter, often by the balloon portion of the dilatation catheter.
  • Stents delivered to a restricted coronary artery, expanded to a larger diameter by a balloon catheter, and left in place within the artery at the site of the dilated lesion are shown, for example, in U.S. Pat. No.4,740,207 (Kreamer) and U.S. Pat. No. 5,007,926 (Derbyshire).
  • stents have been used effectively for some time, the effectiveness of a stent can be diminished if it is not uniformly implanted within the vessel.
  • stents are placed along the central portion or working length L f of a balloon as shown in Fig. 2A.
  • Such balloons tend to have non-uniform radial expansion due to the increased restriction the stent imposes on the working (central) length of the balloon. Consequently, as shown in Figs.2B and 2C, the balloon expands first at the proximal and distal balloon ends along the path of least resistance, i.e., towards the distal and proximal ends of the balloon, causing the initial state of the inflating balloon to resemble a "dog bone".
  • the stent when the balloon expands in this "dog bone” fashion, the proximal and distal regions of the balloon over expand to form a characteristic "dog bone” shape, the stent itself does not expand uniformly which may result in the stent being improperly implanted.
  • the inflation of both distal and proximal ends of the balloon which extend beyond the respective ends of the stent will cause trauma to a vessel wall, which might have been healthy, due to radial contact therewith.
  • the present invention overcomes the above identified disadvantages by providing a novel end configuration for the ends walls of the balloon which extend between the catheter and the central elongate portion.
  • the balloon ends are sealingly attached to the catheter inwardly of the ends of the central portion so as to form an inverted portion with respect to the balloon.
  • the extent to which the end walls can expand radially outwardly is limited as expansion of the balloon, if any occurs axially outwardly at the ends of the balloon.
  • the central portion is permitted to expand uniformly radially.
  • Axial expansion of the end walls eliminates or at least results in far less trauma to the portions of the vessel which extend beyond the targeted area.
  • an apparatus for insertion into a biological conduit comprising: a catheter tube having a proximal and a distal end; a balloon mounted at or near the distal end of the catheter tube, the balloon comprising a radially expandable and collapsible central portion, which when expanded, assumes a substantially cylindrical configuration; and flexible end walls integrally formed with the central portion at each end thereof, each flexible end wall being attached to the catheter tube at a location which is axially inwardly of a respective end of the central portion of the balloon; and means for inflating and collapsing the balloon.
  • only one flexible end wall is attached the catheter tube at a location which is axially inwardly of respective end of the central portion of the balloon whereas the other flexible end wall is attached to the catheter tube at a location which is axially outwardly of the other end of the central portion of the balloon.
  • the present invention also contemplates a configuration for an end wall of a balloon of a balloon catheter, which end wall extends between the catheter and an end of a radially expandable and collapsible wall which forms the functional length of the balloon, the end wall being attached to the catheter at a location which is axially inwardly of the end of the radially expandable and collapsible wall with respect to the balloon.
  • a balloon for use in a catheter system comprising a generally cylindrical wall which forms the functional length of the balloon during expansion, the cylindrical wall being attached to the catheter via a pair of radial walls at each end of the functional length of the balloon, wherein a portion of at least one of the radial walls which is connected to the catheter is disposed axially inwardly of the end of the functional length of the balloon to which the radial wall is attached.
  • a stent delivery system comprising in combination: a balloon catheter comprising a catheter tube having a proximal and a distal end; a balloon mounted at or near said distal end of the catheter tube, said balloon comprising a radially expandable and collapsible central portion, which when expanded, assumes a substantially cylindrical configuration; and flexible end walls integrally formed with the central portion at each end thereof, each flexible end wall being attached to the catheter tube at a location which is axially inwardly of a respective end of the central portion of the balloon; and means for inflating and collapsing the balloon; and a stent mounted on the central portion of the balloon when the balloon is collapsed, the stent being radially expandable upon expansion of the balloon.
  • the inverted portions at the proximal and distal ends of the balloon expand axially and do not extend radially beyond the expanding diameter of the central or working portion.
  • the uneven expansion are limited as the balloon is being expanded which, in turn, inhibits a "dog boning" deformation at the proximal and distal regions of the balloon present in the prior art.
  • Figs. 1 A to 1 C are side views showing a typical dilatation balloon catheter, according to the prior art, expanding from its "collapsed” state to an “expanded” state;
  • Figs. 2A to 2E are cross-sectional side views showing the operation of a dilatation balloon catheter of Figs. 1A to 1C in a prior art stent delivery system;
  • Fig. 3 is a perspective view of the balloon dilation catheter in accordance with the present invention.
  • Figs.4A to 4C are cross-sectional side views showing the operation of the dilatation balloon catheter of Fig. 3;
  • Figs. 5A and 5B are enlarged cross-sectional side views detailing the manner in which the radial end walls of the balloon may react in response to interior pressure in the balloon;
  • Fig.6 is a cross-sectional side view showing a variant of the balloon dilation catheter in accordance with the present invention.
  • Fig. 7 is a cross-sectional side view showing another variant of the balloon dilation catheter in accordance with the present invention.
  • Figs. 8A and 8B are a cross-sectional side views showing further variants of the balloon dilation catheter in accordance with the present invention.
  • Figs. 9A - 9C are a cross-sectional side views showing the balloon dilation catheter of Figs.4A - 4C being used as part of an intravascular catheter system for implanting and expanding a stent in a body lumen.
  • Figs. 1A-1C shows a typical dilatation balloon catheter 10, according to the prior art, expanding from its "collapsed” state to an “expanded” state.
  • the balloon 12 is collapsed, having an optimal initial profile radius ⁇ for insertion into the blood vessel .
  • the balloon 12 is attached to a catheter tube 14 at its proximal and distal ends 16,18 which are generally shaped symmetrical to one another.
  • the shape of the balloon 12 in its collapsed state is somewhat dependent on its nature, that being compliant, semi-compliant or non-compliant.
  • a semi- or non-compliant balloon When a semi- or non-compliant balloon is collapsed, it assumes a flattened configuration which is curled circumferentially around the catheter tube 14. Compliant balloons tend to conform to the shape of the catheter tube 14.
  • the balloon 12 will have a designed operational or functional length L f which is separated from the balloon ends 16, 18 by integrally formed tapered portions 20.
  • the functional length L f is that portion of the balloon 12 that remains substantially parallel to the catheter/balloon axis 22.
  • Length L is the expandable portion of the balloon 12 which is generally equal to the functional length L f plus the
  • Fig. 1B inflation of the balloon 12 expands the initial profile radius ⁇ to secondary profile radius r s , which is generally uniform along the functional length L f of the balloon 12.
  • radial pressure is applied to the interior walls of the blood vessel (not shown) along the functional length L f when the balloon 12 is in the expanded configuration.
  • a semi-compliant or compliant balloon 12 Upon further expansion as seen in Fig. 1C, a semi-compliant or compliant balloon 12 will attain a rounded longitudinal cross-section with a varied radius r v .
  • the previously tapered portions 20 become curved and extend further centrally of the balloon 12 as the functional length L f shortens.
  • Figs. 2A-2E show the effects of using such a balloon catheter 10 in a stent delivery system 30.
  • Fig. 2A shows the balloon 12 in the collapsed state with a stent 32 placed over the balloon 12.
  • initial inflation of the balloon 12 causes the proximal and distal ends 16,18 of the balloon 12 to inflate first in a dog bone fashion as the stent 32 restricts the expansion of the central balloon portion. This occurs because the balloon ends (i.e. the points of attachment of the balloon ends and the catheter) extend outwardly beyond the functional length L f which has been selected based on the desired length L s of the stent 32 to be implanted.
  • FIG.3 illustrates a balloon dilation catheter in accordance with the present invention, shown generally by the reference numeral 40.
  • the catheter 40 has a proximal end 42, a distal end 44, an axis 46 and a catheter tube 47 surrounding at least one inflation lumen 48.
  • the inflation lumen 48 extends between the ends 42, 44 along the axis 46.
  • the inflation lumen 48 communicates fluid to and from the balloon 50 for its inflation and deflation.
  • the catheter shown is of the "rapid exchange" type, wherein the guide wire 51 is separate from the catheter tube 47 until near the distal end 44 where it enters the catheter tube 47 and exits axially out the distal end 44. This guide wire 51 is not shown in catheter arrangements diagrammed in Figs.4A-9C for sake of clarity.
  • the balloon 50 is mounted on the distal end 44 of the catheter 40.
  • the balloon 50 has a proximal end 52 and a distal end 54.
  • the ends 52,54 of the balloon 50 are bonded, fused, adhered or otherwise attached to the catheter tube 47 in a fluid tight manner by techniques known in the art.
  • the balloon 50 is inflatable to expand from a collapsed configuration to an expanded configuration.
  • the balloon 50 is deflatable after inflation to selectively return to the collapsed configuration for removal.
  • the balloon 50 can be fabricated from a flexible, fluid impermeable material suited for the specific application.
  • the balloon can be made from a flexible polymer such as nylon, PET, PE, etc.; silicone; latex; urethane; a polysiloxane modified styrene-ethylene/butylene-styrene block copolymer (SEBS); or like material.
  • a flexible polymer such as nylon, PET, PE, etc.; silicone; latex; urethane; a polysiloxane modified styrene-ethylene/butylene-styrene block copolymer (SEBS); or like material.
  • SEBS polysiloxane modified styrene-ethylene/butylene-styrene block copolymer
  • the balloon itself is more akin to a small inflatable bag rather than a balloon per se in that while flexible it is not significantly stretchable. It is formed originally as a cylindrical shape having a radius equivalent to the maximum or design radius which it is expected to achieve without significantly encroaching on its failure limits. It must be flexible so that it can be voided of fluid and collapsed. When collapsed, it must be flattenable so as to enable the balloon to be folded or wrapped around the catheter tube in a considerably reduced diameter for navigation through bodily vessels or to enable an unexpanded stent to be placed thereover and crimped for later deployment (as will be described in greater detail hereinbelow). Semi-compliant are moderately stretchable so their flexibility is generally a combination of stretchability and foldability. The flexibility of stretchable balloons is a result of their stretchability.
  • catheter 40 is adapted for percutaneous transluminal coronary angioplasty procedures (PTCA), it will be appreciated that a balloon in accordance with the present invention can be used in conjunction with many other procedures including the implantation and repair of intraluminal (e.g. intravascular) prostheses. It will also be appreciated that the balloon 50 and catheter 40 of the present invention have multiple applications. Such applications include diagnostic procedures such as cardiological and vascular imaging. Other uses include laser and mechanical ablation of biological tissue, transluminal medication delivery, and various other interventional, diagnostic and corrective procedures.
  • PTCA percutaneous transluminal coronary angioplasty procedures
  • the terms “collapsed” and “collapsed configuration” indicate that the balloon 50 is not fully expanded.
  • the collapsed balloon 50 holds a volume of fluid which is significantly less than the volume of fluid held by the balloon 50 when expanded.
  • a typical expanded balloon 50 may hold pressures of 10-20 atm., for example.
  • a collapsed balloon may hold pressure of less than 1 atm. It will be appreciated that the pressures at which the balloon inflates and deflates may vary in accordance with the particular catheter and balloon design requirements.
  • the balloon 50 of FIG. 3 is shown in operation and in greater detail in Figs. 4A-4C.
  • Fig. 4A the balloon 50 is shown in its collapsed configuration, having an optimal initial profile radius for insertion into the blood vessel.
  • the proximal and distal ends 52,54 of balloon 50 are bonded, attached or otherwise affixed in a sealing fashion to the catheter tube 47 so as to provide an inverted portion 56 which underlies each end 58 of the functional length L f of the balloon 50.
  • the overall length L of the balloon 50 is equal to or substantially equal to its functional length L f .
  • a non-compliant or semi-compliant balloon when the balloon 50 is collapsed, it assumes a flattened configuration and is wrapped around both the catheter tube 47. A compliant balloon naturally biases itself into a substantially fully-deflated state against the catheter tube 47 in absence of pressurization.
  • the balloon 50 is inflated by introducing fluid under pressure, such as for example via syringe 60 shown in Fig. 3. Fluid from the syringe 60 is communicated through the inflation lumen 48 in the catheter tube 47 and interiorly of the balloon 50 through port 64 (see Figs.4A-4C). Port 64 is disposed between the sealed ends 52,54 of the balloon 50. The pressurized fluid causes the balloon 50 to expand radially as shown in Fig. 4B.
  • the points 66 from which the balloon ends 52,54 extend or are attached to the catheter are located inwardly of the ends 58 of the functional length L f of the balloon 50 and radially therebelow, the extent to which the originally inverted portions 56 can expand radially outwardly is limited if not eliminated and the balloon 50 expands with a uniform radius r u substantially along its entire functional length L f , i.e. the functional length L f maintains a generally cylindrical shape.
  • the balloon 50 is designed such that it reaches its maximum (design) radius r max either before the inverted portions 56 fully elongate or at about the same time as shown in Fig.4C.
  • inverted portions 56 generally form an inwardly disposed, frustoconically-shaped radial end wall. Except where otherwise specified, the term “inwardly” and “outwardly” as used herein are generally relative to the longitudinal center of the balloon.
  • the expansion of the balloon 50 is shown in greater detail in Figs. 5A and 5B. As the balloon 50 starts to expand radially outwardly against a restrictive element 68 (which may be a stent as shown or against a portion of a vessel wall), the internal pressure will likely cause the inverted portion 56 to expand axially outwardly to 56' as there will be less resistance to expansion in that direction.
  • a restrictive element 68 which may be a stent as shown or against a portion of a vessel wall
  • the rate of expansion (to its maximum axial extent) will of course depend on whether the balloon is compliant, semi-compliant or non-compliant. However, as can be seen, because the expansion of the initially extraneous material is in an axially outward direction, there will be little if any dog boning that will occur and thus the expansion of the central portion 69 of the balloon 50 will occur uniformly radially.
  • balloon 70 is provided at both ends with additional axial wall capacity in the form of a multiply folded or bellows-type wall 72.
  • the walls 72 extend from attachment locations or points 66 to the extreme ends 58 of the function length L f . Since attachment points 66 are axially inward of the ends 58 of the function length L f , the extent to which the radial walls 72 can expand radially outward is limited as expansion will occur primarily in the axial direction.
  • the additional overlappings in the walls 72 permits greater radial expansion of the function length L f portion of the balloon 70 as they straighten.
  • FIG. 7 shows balloon 75 in its expanded state similar to balloon 50 shown in Fig.4C.
  • the proximal and distal ends 52,54 of the balloon 75 are sealingly attached along portions of the catheter tube 47 axially inwardly of the points 66 from which the radial wall or inverted portion 76 extends.
  • Figs. 8A and 8B show yet further embodiments of the present invention in semi- expanded states wherein only one end of the respective balloons 80,90 includes the inverted portion 82, 92 whereas the opposite end has a conventional tapered portion 84,94.
  • the inverted portion 82 extends from the proximal end 86 of the functional length portion L f to attachment point 66 which is located axially inwardly of the proximal end 86.
  • the tapered portion 84 extends from the distal end 88 of the functional length portion L f to attachment point 67 which is located axially outwardly of the distal end 88.
  • the inverted portion 92 extends from the distal end 96 of the functional length portion L f to attachment point 66 which is located axially inwardly of the distal end 96.
  • the tapered portion 94 extends from the proximal end 98 of the functional length portion L f to attachment point 67 which is located axially outwardly of the proximal end 88.
  • catheter 40 is adapted for PTCA, it will be appreciated that a balloon in accordance with the present invention can be used in conjunction with many other procedures including the implantation and repair of intraluminal (e.g. intravascular) prostheses.
  • intraluminal e.g. intravascular
  • catheter 100 includes catheter tube 102 through which inflation lumen 104 communicates fluid interiorly of the balloon 110 through port 106.
  • Proximal and distal ends 112,114 of the balloon 110 are sealingly attached to the catheter tube 102 so as to include inverted portions 116 which will constitute the end walls of the balloon 110 during expansion.
  • a stent 120 equivalent in length to the functional length L f of balloon 110, is placed or crimped over balloon 110 when in its collapsed state.
  • a guide wire 51 (as shown in Fig. 3) is used to position the balloon 110 and stent 120 within the vessel.
  • the stent 120 may be any one of the variety of commercially available stents, however, it is preferred that the stent be of the type that shown and described in Applicant's international application No. PCT/CA99/00632 filed July 12, 1999 and entitled Expandable Endovascular Medical Tubular Stent or No. PCT/CA00/00035 filed January 21 , 2000 and entitled Expandable Intravascular Tubular Stent.
  • stent 120 is uniformly expanded to its implantation diameter and properly placed within the vasculature of a patient.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Transplantation (AREA)
  • Child & Adolescent Psychology (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L'invention concerne un ballonnet de cathéter de dilatation de ballonnet pouvant être utilisé dans un système d'implantation de stent. Ledit ballonnet généralement tubulaire présente une configuration de parois d'extrémité conçue de façon à recevoir le ballonnet initialement dilaté de manière axiale plutôt que radiale. Les parois d'extrémité du ballonnet s'étendent entre le cathéter et une partie centrale allongée, et sont fixées de manière étanche audit cathéter à l'intérieur des extrémités de la partie centrale de façon à former une partie inversée par rapport audit ballonnet. De ce fait, la dilatation radiale vers l'extérieur des parois d'extrémité est limitée par rapport à la dilatation du ballonnet lorsque celle-ci s'effectue axialement vers l'extérieur au niveau des extrémités dudit ballonnet. La partie centrale peut ainsi se dilater uniformément de manière radiale. La dilatation radiale des parois d'extrémité supprime ou entraîne au moins un traumatisme moindre du vaisseau s'étendant au-delà de la zone ciblée. Le système d'implantation de stent comprend un cathéter à ballonnet doté d'un ballonnet dont la configuration des parois d'extrémité inversées favorise une dilatation radiale plus uniforme du ballonnet et donc du stent associé.
PCT/CA2000/001573 2000-12-22 2000-12-22 Ballonnet de catheter de dilatation de ballonnet et ballonnet d'implantation de stent WO2002051490A1 (fr)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002089705A1 (fr) * 2001-05-08 2002-11-14 Scimed Life Systems, Inc. Ballonnet adapte au raccourcissement d'un stent
WO2004035128A1 (fr) * 2002-10-15 2004-04-29 Boston Scientific Limited Ballonnet a deploiement controle
WO2004050165A1 (fr) * 2002-11-30 2004-06-17 Kimberly-Clark Worldwide, Inc. Catheter comprenant un element de ballonnet fixe de maniere inversee sur celui-ci
WO2006099311A1 (fr) * 2005-03-14 2006-09-21 The Cleveland Clinic Foundation Catheter a ballonnet pour utilisation avec des stents extensibles
US7124489B2 (en) 2002-11-30 2006-10-24 Kimberly-Clark Worldwide, Inc. Process for producing a catheter
WO2007058884A1 (fr) * 2005-11-10 2007-05-24 Boston Scientific Limited Cathéter ballon pour compatibilité de protection distale
US7534224B2 (en) 2002-11-30 2009-05-19 Kimberly-Clark Worldwide, Inc. Catheter with unitary component
WO2010011602A1 (fr) * 2008-07-23 2010-01-28 Boston Scientific Scimed, Inc. Dispositif et procédé d'occlusion au niveau du croisement
US7770536B2 (en) * 2004-11-30 2010-08-10 Advanced Cardiovascular Systems, Inc. Coating abluminal surfaces of stents and other implantable medical devices
EP2471565A1 (fr) * 2009-08-25 2012-07-04 Masayuki Yamada Tube à manchon
CN104168859A (zh) * 2012-02-08 2014-11-26 夸超脉管私人有限公司 具有非线性轴向支柱的约束结构
JP2017515583A (ja) * 2014-05-12 2017-06-15 ザ ガイ ピー．カーティス アンド フランセス エル．カーティス トラスト 静注のためのカテーテル・システム
CN107106820A (zh) * 2014-10-30 2017-08-29 纽敦力公司 治疗多种疾病的化学消融和方法
CN112494785A (zh) * 2020-12-03 2021-03-16 广东博迈医疗器械有限公司 一种新型结构球囊导管
US11382689B2 (en) 2012-11-02 2022-07-12 Neurotronic, Inc. Chemical ablation formulations and methods of treatments for various diseases

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US4762129A (en) 1984-11-23 1988-08-09 Tassilo Bonzel Dilatation catheter
US4762129B1 (fr) 1984-11-23 1991-07-02 Tassilo Bonzel
US4661095A (en) * 1985-02-12 1987-04-28 Becton, Dickinson And Company Method for bonding polyurethane balloons to multilumen catheters
US4748982A (en) 1987-01-06 1988-06-07 Advanced Cardiovascular Systems, Inc. Reinforced balloon dilatation catheter with slitted exchange sleeve and method
US4917666A (en) 1988-11-14 1990-04-17 Medtronic Versaflex, Inc. Steerable thru-lumen catheter
US5061273A (en) 1989-06-01 1991-10-29 Yock Paul G Angioplasty apparatus facilitating rapid exchanges
US5040548A (en) 1989-06-01 1991-08-20 Yock Paul G Angioplasty mehtod
EP0489507A1 (fr) * 1990-12-05 1992-06-10 Smiths Industries Public Limited Company Tube endotrachéal
US5662607A (en) * 1993-10-29 1997-09-02 Medtronic, Inc. Cardioplegia catheter with elongated cuff
EP0820784A2 (fr) * 1996-07-24 1998-01-28 Cordis Corporation Cathéter à ballon et méthode de son emploie
EP0937482A2 (fr) * 1998-02-24 1999-08-25 Medtronic Ave, Inc. Ballon à cone mince à conception de moule unique
WO2001019443A1 (fr) * 1999-09-17 2001-03-22 Boston Scientific Limited Ballon a cones inverses

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US6911038B2 (en) 2001-05-08 2005-06-28 Scimed Life Systems, Inc. Matched balloon to stent shortening
WO2002089705A1 (fr) * 2001-05-08 2002-11-14 Scimed Life Systems, Inc. Ballonnet adapte au raccourcissement d'un stent
WO2004035128A1 (fr) * 2002-10-15 2004-04-29 Boston Scientific Limited Ballonnet a deploiement controle
US6835189B2 (en) 2002-10-15 2004-12-28 Scimed Life Systems, Inc. Controlled deployment balloon
US7534224B2 (en) 2002-11-30 2009-05-19 Kimberly-Clark Worldwide, Inc. Catheter with unitary component
US7124489B2 (en) 2002-11-30 2006-10-24 Kimberly-Clark Worldwide, Inc. Process for producing a catheter
WO2004050165A1 (fr) * 2002-11-30 2004-06-17 Kimberly-Clark Worldwide, Inc. Catheter comprenant un element de ballonnet fixe de maniere inversee sur celui-ci
US7770536B2 (en) * 2004-11-30 2010-08-10 Advanced Cardiovascular Systems, Inc. Coating abluminal surfaces of stents and other implantable medical devices
US8117984B2 (en) 2004-11-30 2012-02-21 Advanced Cardiovascular Systems, Inc. Coating abluminal surfaces of stents and other implantable medical devices
US8312838B2 (en) 2004-11-30 2012-11-20 Advanced Cardiovascular Systems Inc. Coating abluminal surfaces of stents and other implantable medical devices
US8387553B2 (en) 2004-11-30 2013-03-05 Advanced Cardiovascular Systems Inc. Coating abluminal surfaces of stents and other implantable medical devices
WO2006099311A1 (fr) * 2005-03-14 2006-09-21 The Cleveland Clinic Foundation Catheter a ballonnet pour utilisation avec des stents extensibles
WO2007058884A1 (fr) * 2005-11-10 2007-05-24 Boston Scientific Limited Cathéter ballon pour compatibilité de protection distale
US20100241070A1 (en) * 2005-11-10 2010-09-23 Boston Scientific Scimed, Inc. Balloon catheter for distal protection compatability
US9427557B2 (en) 2008-07-23 2016-08-30 Boston Scientific Scimed, Inc. Occlusion crossing device and method
WO2010011602A1 (fr) * 2008-07-23 2010-01-28 Boston Scientific Scimed, Inc. Dispositif et procédé d'occlusion au niveau du croisement
US8109985B2 (en) 2008-07-23 2012-02-07 Boston Scientific Scimed, Inc. Occlusion crossing device and method
EP2471565A1 (fr) * 2009-08-25 2012-07-04 Masayuki Yamada Tube à manchon
US9126003B2 (en) 2009-08-25 2015-09-08 Masayuki Yamada Cuff-equipped tube
EP2471565A4 (fr) * 2009-08-25 2014-10-01 Masayuki Yamada Tube à manchon
CN104168859A (zh) * 2012-02-08 2014-11-26 夸超脉管私人有限公司 具有非线性轴向支柱的约束结构
US11382689B2 (en) 2012-11-02 2022-07-12 Neurotronic, Inc. Chemical ablation formulations and methods of treatments for various diseases
US11517725B2 (en) 2012-11-02 2022-12-06 Neurotronic, Inc. Chemical ablation and method of treatment for various diseases
US11684417B2 (en) 2012-11-02 2023-06-27 Neurotronic, Inc. Chemical ablation formulations and methods of treatments for various diseases
JP2017515583A (ja) * 2014-05-12 2017-06-15 ザ ガイ ピー．カーティス アンド フランセス エル．カーティス トラスト 静注のためのカテーテル・システム
EP3142739A4 (fr) * 2014-05-12 2018-02-14 The Guy P. Curtis and Frances L. Curtis Trust Système de cathéter pour perfusions veineuses
CN107106820A (zh) * 2014-10-30 2017-08-29 纽敦力公司 治疗多种疾病的化学消融和方法
US11648378B2 (en) 2014-10-30 2023-05-16 Neurotronic, Inc. Chemical ablation and method of treatment for various diseases
US12005207B2 (en) 2014-10-30 2024-06-11 Neurotronic, Inc. Chemical ablation and method of treatment for various diseases
CN112494785A (zh) * 2020-12-03 2021-03-16 广东博迈医疗器械有限公司 一种新型结构球囊导管

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