WO2005028014A1 - Dispositif destine a etre introduit dans des organes corporels et dote d'un element de marquage servant a controler sa position - Google Patents

Dispositif destine a etre introduit dans des organes corporels et dote d'un element de marquage servant a controler sa position Download PDF

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Publication number
WO2005028014A1
WO2005028014A1 PCT/DE2004/002072 DE2004002072W WO2005028014A1 WO 2005028014 A1 WO2005028014 A1 WO 2005028014A1 DE 2004002072 W DE2004002072 W DE 2004002072W WO 2005028014 A1 WO2005028014 A1 WO 2005028014A1
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WO
WIPO (PCT)
Prior art keywords
stent
wall
ray
opaque
catheter
Prior art date
Application number
PCT/DE2004/002072
Other languages
German (de)
English (en)
Inventor
Johannes Jung
Original Assignee
Campus Gmbh & Co.Kg
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 Campus Gmbh & Co.Kg filed Critical Campus Gmbh & Co.Kg
Publication of WO2005028014A1 publication Critical patent/WO2005028014A1/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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0108—Steering means as part of the catheter or advancing means; Markers for positioning using radio-opaque or ultrasound markers
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • 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
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
    • A61F2002/91541—Adjacent bands are arranged out of phase
    • 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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/9155—Adjacent bands being connected to each other
    • A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
    • 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
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region of the balloon
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/32—General characteristics of the apparatus with radio-opaque indicia

Definitions

  • the present invention relates to a device for insertion into particularly tubular hollow organs of the body, such as catheters, especially antiography catheters and stents, which contain detectable markings in the body for position control.
  • hollow organs in particular tubular hollow organs such as blood vessels, esophagus, biliary tract, intestine or ureter, are examined by means of a catheter to be inserted into the hollow organ and, if necessary, constrictions after dilation are eliminated by introducing a supporting stent.
  • a catheter examination or the introduction of a vascular support such as a stent is regularly checked by X-ray.
  • a catheter is usually inserted into the corresponding hollow organ, at the end of which an inflatable, balloon-like dilation element is arranged.
  • This inflatable dilation element is inflated when it has reached the area of the stenosis, as a result of which the narrowed area is expanded to a desired lumen or a desired diameter.
  • a vascular support is then inserted into the corresponding hollow organ, or possibly also simultaneously with the dilation.
  • the procedure is usually such that the stent, that is, a so-called stent, is inserted into the region or section of the constriction in a compressed, unexpanded state and is expanded radially to its longitudinal axis at this point.
  • Nitinol R nickel-titanium alloys with temperature-dependent shape behavior
  • This procedure is known per se and a large number of catheters and stents have already been described. A problem with this procedure is that both such vascular supports and the catheters are made of materials that are difficult to display on the X-ray screen. It is therefore difficult for the attending physician to determine the respective position of the stent or catheter. For this reason, a large number of radiopaque markings have already been proposed.
  • EP-A 0 679 372 describes radiopaque markers which are arranged in particular at the end of the stent.
  • detection elements with a larger width and a flat material area are proposed, so that these elements can be recognized more clearly on the x-ray screen than the individual, thin, elongated boundary or wall elements of a stent.
  • EP-A 0709068 describes terminal protrusion elements which contain so much material that they are visible in the X-ray screen.
  • DE-A 101 52 511 describes a vascular catheter with a three-dimensional orientation option, the catheter consisting of two parts, namely a shaft with little radiopaque shade and a strongly radiopaque end part with a tip, and the end part and shaft being at an angle greater or form less than 90 ° so that the contact surface is asymmetrical to the catheter axis.
  • the surgeon can determine from the position of the bevel of the connection point between the end part and the shaft whether the catheter tip is directed forwards, to the side or to the rear.
  • information about the degree of dilation is not possible with this procedure.
  • the aim of the invention is therefore to provide a marking, in particular of medical devices, which not only indicate the position to an operating doctor when inserted into a body, but also whether a corresponding expansion, be it a dilatation balloon or a stent, itself has actually expanded in the desired manner and to the extent desired, or whether these are still in their original, not or not fully dilated form.
  • the jacket or the wall of a stent or catheter in particular a balloon, in a spiral or helix shape with radiopaque markings.
  • This procedure makes it possible to determine the degree of expansion over the entire length of the tubular wall, regardless of the direction from which a doctor looks at the catheter or stent by X-ray.
  • no body parts lying in front of and / or behind the inserted device are covered with this procedure and can therefore still be represented in the X-ray image.
  • the tubular or balloon-shaped wall of the device according to the invention is expandable. It can be plastically deformable either permanently or reversibly, as is the case, for example, in the case of balloon expansions, in particular also balloon-expandable stents, or it can also be elastic or superelastic, as is the case, for example, in the case of self-expanding stents or dilatation balloons. In many cases, however, so-called shape memory materials have been found. Such materials are nickel-titanium alloys as are available under the trade name Nitinol. Since both the balloon catheter and the stents are often used in vascular curvatures find or have to pass through it, the tubular device according to the invention can be elastically bent along its longitudinal axis of the tube.
  • the radiopaque marking can run around the cylindrical wall in a thread-like form. It is preferably designed as a thin, X-ray opaque thread. However, it is particularly preferred to apply the X-ray-opaque marking in the form of small-area punctiform areas along a spiral or helical line around the entire cylindrical jacket in a manner similar to a string of pearls. This can be done, for example, by using opaque X-ray material in recesses or recesses in the wall. In principle, it is also possible to place them on the wall from the outside or inside. In a particularly preferred embodiment, the X-ray opaque area with the little X-ray opaque wall material forms a smooth inner and / or outer surface. According to the invention, a single, spiral-shaped marking is sufficient, but it is of course also possible to arrange two or more radiopaque, spiral-shaped markings.
  • X-ray opaque material is known per se.
  • Commonly used x-ray opaque materials according to the invention are gold, platinum, silver and / or tantalum.
  • the wall of the device according to the invention is usually tubular and consists of interconnected wall segments.
  • the individual wall segments are connected to one another via connecting elements.
  • the connecting elements are preferably flexible. tet.
  • the X-ray-opaque areas are arranged in the connecting elements.
  • the device according to the invention is a stent, it preferably has a grid-shaped tube or hollow cylinder in its basic structure, which runs around or along a central axis.
  • the stent itself is flexible and bendable along this axis so that it can overcome turns, bends or branches when inserted into a body organ.
  • the tubular lattice structure is formed by a wall provided with openings, the wall containing elastic ring-shaped wall segments running around the axis, which are connected to one another via connecting segments.
  • the ring-shaped wall segments themselves are made up of wall elements which are combined to form a ring surrounding the axis.
  • the ring-shaped wall segments are lined up along the central axis, the individual segments being connected to one another by connecting segments.
  • Individual ring-shaped wall segments contain spring elements which give the wall segment the desired elasticity in order to allow the stent to expand radially to the central, bendable axis, the diameter of the inner tube lumen or the hollow cylinder formed by the wall being increased. In this way, the wall segments develop the desired elastic support effect on the hollow organ.
  • the wall segments are preferably formed entirely from adjacent spring elements or webs lying in the wall plane, which form a ring around the stent axis in a V-shape or zigzag shape.
  • the wall segments are preferably constructed from the spring elements.
  • the spring elements are usually flexible webs which are connected to one another at their ends in a V-shape via connecting points or connecting elements. The invention is now characterized by a special configuration of these flexible webs or spring elements.
  • these spring bars can be designed to be straight or linear and / or wave-shaped, as a result of which the forces acting on the connection points during expansion and bending along the tube or stent axis are greatly reduced.
  • the wavy structure expediently runs in the wall surface. In its simplest form, this structure is formed from a simple wave, i.e. H. from a wave valley and a wave crest.
  • the curved wave shape has at least one turning point.
  • the wave-shaped structure run in a zigzag structure instead of being sinusoidal.
  • the spring elements are designed in such a way that the angle formed between them on the V-shaped connecting segments is concave with respect to the interior of the angle, that is to say that the angle formed tangentially by two adjacent spring elements decreases and becomes smaller towards the spring web end or the spring connecting element becomes.
  • a symmetrical structure is formed that corresponds to that of the Greek see letter v corresponds in symmetrical spelling.
  • the individual wall segments are connected to one another by means of a continuous longitudinal web.
  • the longitudinal web is linearly continuous and can thus absorb compressive or tensile stresses in the longitudinal direction without causing a change in the length of the stent.
  • contracting, ie compressing the individual wall segments likewise does not result in a change in the length of the stent, since the tensile or compressive stresses that may occur are transmitted to and taken up by the continuous longitudinal web.
  • annular wall segments comprise wall elements or are formed from a plurality of such elements.
  • These wall elements are preferably spring elements which are arranged alternately to one another at an angle formed by first spring elements and second spring elements. This results in a zigzag-like elastic structure for the wall segments, as a result of which a good, elastic spring action is achieved, which also enables radial expansion to the stent axis and brings about the support action on the hollow organ.
  • the connecting segments expediently connect either only first or second spring elements to one another.
  • the connecting segments themselves are not shear and tensile forces acting along the longitudinal axis of the stent elastic and essentially rigid, that is to say that these, together with the spring elements connected by them, absorb these tensile and pushing forces and prevent a change in length of the stent.
  • the respectively connected first and second spring elements together with the connecting segments form the continuous longitudinal web.
  • the connecting segments and the spring elements connected to them should each be arranged parallel to one another. This again applies to the projection onto a circumferential surface of the stent.
  • One embodiment of the invention is characterized by a plurality of longitudinal webs which are parallel to one another in a projection onto an outer circumferential surface and are spaced apart from one another in the circumferential direction.
  • This can be, for example, three or four longitudinal webs.
  • the wall segments are positioned particularly effectively with respect to one another, while at the same time reliably preventing a change in the length of the stent.
  • the longitudinal web it is also possible for the longitudinal web to have a helical shape. This can be the case, for example, if the longitudinal web consists of the connecting segments and the first or second spring elements. This leads to a particularly simple structure.Whennän- Changes due to compressive or tensile stress or by compressing the stent are nevertheless reliably avoided.
  • the connecting segments and the connecting elements can also have a greater material thickness or width than the spring elements.
  • the connecting segments are then, for example, approximately S-shaped.
  • the connecting segments then have at least one component parallel to the longitudinal web.
  • the connecting segments can for example have twice the width of the spring elements. This results in a particularly simple sewing pattern.
  • the stent is preferably made in one piece. In this way, a stable construction results without unnecessary edges or predetermined breaking points.
  • a shape memory material such as a so-called memory metal, namely a nickel-titanium alloy, as is also sold under the name Nitinol, can be used as the material for the stent.
  • Polymers such as those used in other areas of medicine for implantation in the body, are also suitable for producing the stent according to the invention.
  • a suitable cutting pattern can then be made from a tubular body with a small diameter, for example by means of laser radiation, in order to provide the spring elements and the connections. segments are cut out. The expanded shape can then be impressed on this tubular body in a known manner.
  • the stent produced in this way is then compressed into the state with a small diameter and, for example, inserted into a diseased blood vessel by means of a catheter, the stent can be automatically brought back into the impressed shape by heating it above the so-called conversion temperature.
  • Stainless steel, plastic or so-called self-dissolving materials are also suitable as further materials for the stent. These self-dissolving materials are particularly advantageous if a stent should not be permanently inserted. If no self-expanding stents are used, they can be expanded at the desired position, for example using a balloon catheter.
  • the surface of the stent should preferably be processed, in particular refined, smoothed and / or polished. This results in a smooth and body-friendly surface.
  • This wave-shaped design of the spring bars according to the invention is preferably such that it does not lead to any significant amount of longitudinal elasticity, i. H. that the webs change their length along the longitudinal axis of the stent in the event of tension and compression.
  • the device according to the invention is preferably cut along the wall by means of a laser beam. given cutting pattern or cutting lines.
  • interconnected wall segments are formed, which are preferably connected by means of flexible connecting elements and whose spaces define the lattice openings.
  • the X-ray opaque materials are inserted into the wall surface before and after cutting, preferably in such a way that they form a smooth plane with the inner and outer wall surface. Such a pattern is shown, for example, in the attached FIG. 1.
  • FIG. 1 shows a device according to the invention in the form of an unexpanded cut stent.
  • the tubular stent is shown in FIG. 1 in a cut shape projected into a plane.
  • the röntgenopa- 'ken marks are displayed in black and extend on the cylindrical or tubular stent wall in a helical or spiral helical line. If such a helical line is imaged by X-rays, the image of a sinusoidal wave with constant amplitude is created. If the amplitude is reduced at certain points, this indicates that at this point the stent or balloon has not expanded as much as the adjacent marked areas or wall segments.

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

Abstract

L'invention concerne un dispositif destiné à être introduit dans des organes creux d'un corps, en particulier d'un corps vivant. Ce dispositif comprend un élément pourvu d'une paroi tubulaire radialement élastique, ainsi qu'un élément de marquage opaque aux rayons X qui sert à déterminer la position du dispositif dans le corps. La présente invention est caractérisée en ce que l'élément de marquage opaque aux rayons X est disposé de manière spiroïde sur la circonférence de la paroi tubulaire élastique ou expansible. Le dispositif selon l'invention est de préférence un cathéter ou une endoprothèse.
PCT/DE2004/002072 2003-09-16 2004-09-16 Dispositif destine a etre introduit dans des organes corporels et dote d'un element de marquage servant a controler sa position WO2005028014A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342758.9 2003-09-16
DE2003142758 DE10342758A1 (de) 2003-09-16 2003-09-16 Vorrichtung zum Einführen in Körperorgane mit Markierung der Lagekontrolle

Publications (1)

Publication Number Publication Date
WO2005028014A1 true WO2005028014A1 (fr) 2005-03-31

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PCT/DE2004/002072 WO2005028014A1 (fr) 2003-09-16 2004-09-16 Dispositif destine a etre introduit dans des organes corporels et dote d'un element de marquage servant a controler sa position

Country Status (2)

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DE (2) DE20314393U1 (fr)
WO (1) WO2005028014A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007105067A1 (fr) * 2006-03-14 2007-09-20 Arterial Remodeling Technologies, S.A. Procédé destiné à commander le positionnement de stents polymères
US8353951B2 (en) 2005-10-03 2013-01-15 Cardiatis S.A. Radio-opaque endoprosthesis
JP2015120002A (ja) * 2010-01-30 2015-07-02 アボット カーディオヴァスキュラー システムズ インコーポレイテッド 圧縮復元可能な高分子スキャフォールド
US9763818B2 (en) 2010-01-30 2017-09-19 Abbott Cardiovascular Systems Inc. Method of crimping stent on catheter delivery assembly
US10052185B2 (en) 2016-02-12 2018-08-21 Covidien Lp Vascular device marker attachment
US10265089B2 (en) 2016-02-12 2019-04-23 Covidien Lp Vascular device visibility
WO2020011760A1 (fr) * 2018-07-09 2020-01-16 Kardion Gmbh Système d'assistance cardiaque et procédé pour surveiller l'intégrité d'une structure de maintien d'un système d'assistance cardiaque
US11368081B2 (en) 2018-01-24 2022-06-21 Kardion Gmbh Magnetic coupling element with a magnetic bearing function
US11754075B2 (en) 2018-07-10 2023-09-12 Kardion Gmbh Impeller for an implantable, vascular support system
US11944805B2 (en) 2020-01-31 2024-04-02 Kardion Gmbh Pump for delivering a fluid and method of manufacturing a pump
US12005248B2 (en) 2018-05-16 2024-06-11 Kardion Gmbh Rotor bearing system
US12064615B2 (en) 2018-05-30 2024-08-20 Kardion Gmbh Axial-flow pump for a ventricular assist device and method for producing an axial-flow pump for a ventricular assist device
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