WO2006029619A1 - Stützprothese - Google Patents
Stützprothese Download PDFInfo
- Publication number
- WO2006029619A1 WO2006029619A1 PCT/DE2005/001635 DE2005001635W WO2006029619A1 WO 2006029619 A1 WO2006029619 A1 WO 2006029619A1 DE 2005001635 W DE2005001635 W DE 2005001635W WO 2006029619 A1 WO2006029619 A1 WO 2006029619A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curvature
- prosthesis according
- arcs
- arc
- constriction
- Prior art date
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Classifications
-
- 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
- A61F2/82—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
- A61F2002/91508—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 the meander having a difference in amplitude along the band
-
- 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
- A61F2002/91525—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 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
-
- 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
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0054—V-shaped
Definitions
- the invention relates to a supporting prosthesis for vessels or intracorporeal lumens with a tubular jacket, which has an expandable meander pattern formed by a filament, which in each case has a constriction in a plurality of curvature arcs.
- Such a supporting prosthesis a so-called stent
- a so-called stent is known from EP 1 374 802 A1.
- the known stent has a tubular jacket with a plurality of meander-shaped support rings, which are connected by connecting elements extending substantially in the longitudinal direction and having a plurality of loops.
- the arcuate portions of the meandering support rings may be uniformly tapered throughout the curvature arcs to facilitate curling of the curvature arcs.
- the curvature bends must not be weakened so far that the strength of the support rings in the stretched state is at risk.
- the known stent is usually applied to a balloon catheter and with the help of the balloon catheter in the
- Area of the vessel to be dilated brought This can be, for example, a stenosis in the region of a coronary vessel.
- the stent is then expanded in the radial direction to the extent that the support rings are plastically deformed.
- the vessel is held in an expanded state even after retraction of the balloon catheter.
- the expansion of the stent proceeds uniformly in the sense that the curvature provided for the plastic deformation bend bows evenly if possible at the same time, so that the vessel to be dilated is evenly loaded.
- the invention is therefore an object of the invention to provide a uniformly expandable supporting prosthesis.
- the supporting prosthesis for vessels or intracorporeal lumens has a tubular jacket with an expandable meander pattern formed by a filament, the curvature arcs of which each taper within the curvature arc to a constriction with a minimal cross-sectional area and whose curvature arcs through one of the smallest cross-sectional area to larger Cross-sectional surfaces extending deformation are stretchable.
- curvature arcs is intended to mean an arc of the meander pattern which extends between straight sections or turning points of the meander pattern.
- the meander patterns are stretched evenly, since with a tensile loading of the meander pattern, the deformations of the curvature arcs begin almost simultaneously at the respective bottlenecks and then continue continuously into the regions of the arcs of curvature which, in comparison to FIG respective bottleneck have greater cross-sectional area.
- the continuous narrowing of the curvature arcs toward the constriction prevents the stretching movement of the meander pattern initially leading to the extension of individual curvature arcs, since the deformation of an adjacent one sets in before a complete extension of one curvature arcs Krüinmungsbogens at the bottleneck. In this way, a uniform expansion of the supporting prosthesis is possible.
- the bends are free of sections of consistent cross-sectional area. This promotes a uniform stretching process.
- the bottleneck is located away from the center of the arc of the respective arc of curvature.
- a particularly large ratio of maximum cross-sectional area to minimum cross-sectional area within the arc of curvature can be produced. It is expected that the extension of the meander pattern will be particularly even with an expansion of the stent.
- the curvature curve has only a single bottleneck.
- the deformation begins in a predictable manner at a defined location and then continues into the thicker sections of the arc of curvature.
- Figure 1 is a plan view of a cut stent, with a plurality of circumferentially meander-shaped support rings;
- Figure 2 is an enlarged view of a curvature arc of one of the meandering extending support rings
- FIG. 1 A first figure.
- FIG. 3 shows a cross section through the curvature section from FIG. 2 along the section line III-III
- FIG. 4 shows a cross section through the curvature section from FIG. 2 along the section line IV-IV;
- FIG. 5 shows a cross section through the curvature section of FIG. 2 along the section line V-V;
- Figure 6 is a plan view of another cutaway
- Stent having a plurality of circumferentially meandering support rings
- FIG. 7 shows a plan view of a cut-open stent whose meander-shaped support rings each have a bottleneck arranged in the region of the arc center of the curvature arcs;
- Figure 8 is an enlarged view of a curve of curvature of the stent of Figure 7;
- FIG. 9 shows a cross section through the curve bend from FIG. 8 along the section line IX - IX;
- FIG. 10 shows a cross section through the curve of FIG. 8 along the section line X-X;
- FIG. 11 shows a cross section through the curve of FIG. 8 along the section line XI-XI;
- Figure 12 is a plan view of a cut stent in which the meander pattern follows a helical path
- FIG. 13 an enlarged view of a curvature arc of a stent whose inner arc has different radii of curvature
- Figure 14 is an enlarged view of a curvature arc with two bottlenecks
- Figure 15 is an enlarged view of a curved arc with two bottlenecks, whose inner arc has different radii of curvature in the region of the bottlenecks
- FIG. 16 is an enlarged view of a curve of curvature, the outer curve of which has a flattening.
- the stent 1 shows a plan view of a stent 1 with a tubular sheath 2.
- the stent 1 is shown as it would be cut along a section line S-S and appear flat on a flat surface.
- the stent 1 has a series of meander-shaped support rings 3, which are composed of a plurality of substantially linearly extending support struts 4, which are connected via arcs of curvature 5.
- the support rings 3 are connected in a longitudinal direction 6 by connecting elements 7. Since the meandering course of adjacent support rings is offset by 180 ° in phase, the connecting elements 7 running between adjacent curved bows 5 can be kept short. However, it is also possible to use connecting elements 7 which have a meandering course in the longitudinal direction 6. However, this is not absolutely necessary since along the support rings 3 between two curvature arcs 5 with connecting elements 7 there are at least two curvature arcs 5 without connecting elements 7. Between the connecting elements 7, any other even number of bends 5 can lie without connecting elements 7. If, in each case, two curvature arcs 5 without connecting elements 7 are located between two connecting elements 7, the support rings 3 each have an N-shaped profile between each two connecting elements 7.
- the stent 1 is sufficiently flexible even when transported through narrowly curved vessels.
- the tubular stent 1 is applied to a balloon catheter.
- the cylindrical stent 1 is expanded in the radial direction.
- the support rings 3 are stretched in a circumferential direction 8.
- the curvature bows 5 are now designed so that the stretching movement takes place as evenly as possible.
- individual loops 9, which are each formed by a curve bend 5 and the adjacent support struts 4, should preferably be stretched both uniformly and simultaneously.
- the simultaneous extension of the curvature arcs 5 are to be understood to mean extensions which do not necessarily run parallel at the same time, but which have a temporal overlap. Because in practice, due to frictional forces between the stent 1 and the balloon catheter, it can occur that the extension of the curvature arcs 5 takes place with a time delay.
- FIG. 2 shows an enlarged illustration of one of the curvature bends 5.
- FIGS. 3 to 5 are cross-sections through the curve bend 5 from FIG. 2. It can be seen from FIGS. 2 to 5 that the curve bend 5, which extends between boundary surfaces 10 and 11 shown in dashed lines in FIG. 2, narrows towards a constriction 12 ,
- the stent 1 is made of a metal tube.
- the support rings 3 and the connecting elements 7 are worked out of the metal tube by means of a laser.
- the cross sections shown in FIGS. 3 to 5 have the same height h along the section lines III-III, IV-IV and VV.
- the cross-sectional areas differ with regard to the width.
- the relationship b 3 > h $> b 5 applies to the respective widths b 3 , b 4 and bs.
- the width of the curvature arc 5 can be reduced so far in the region of the restriction that the width b 5 of the curvature arc 5 in the constriction 12 is smaller than the height h.
- the support rings 3 are stretched.
- the extension of the support rings 3 in the circumferential direction 8 is accomplished by a deformation of the curvature arcs 5.
- the deformation of the curvature arcs 5 begins at the constriction 12, which has the minimum cross-sectional area within the curvature arc 5.
- the deformation of the area around the constriction 12 becomes brittle.
- the deformation of the curvature curves 5 continues in the direction of the interface 10.
- deformation work is increasingly required. Therefore, before a curvature arc 5 is almost completely stretched, the deformation of an adjacent curvature arc 5 will be used. It is therefore to be expected that the loops 9 of the support rings 3 are stretched uniformly and at the same time.
- each of the curvature bows 5 has a constriction 12.
- the bottlenecks 12 can, as shown in FIG. 1, be arranged exclusively in terms of the circumferential direction on the input side or on the output side in the respective curvature arcs 5.
- FIG. 6 shows a further stent 13, in which the bottlenecks 12 are arranged alternately on the input side and on the output side in the curvature arcs 5. This is followed in a support ring 3 alternately wide support struts 14 and narrow support struts 15 each other.
- the narrow support struts 15 may be resilient under certain circumstances, when parts of a support ring 3 get caught in the expansion in the vessel wall.
- FIG. 7 shows a further stent 16 whose curvature arcs 17 each have a constriction 18 in the region of a center line 19 of the curvature arc 17.
- FIG. 8 shows an enlarged view of one of the curvature arches 17.
- FIGS. 9 to 11 show sections through the curvature arcs 17 from FIG. 8 along the lines IX - IX, XX and XI - XI.
- the height h of the cross-sectional areas shown in FIGS. 9 to 11 is the same in each case, only the widths b 9 , bio and bu are different. In particular, bio ⁇ bg, bu.
- the curvature arcs 17 are stretched.
- the deformation of the curvature arcs 17 in each case begins at the constriction 18 and continues in both directions towards boundary surfaces 20 of the curvature arcs 17.
- increasingly larger deformation work is to be done, so that the curvature arcs 17 of a support ring 3 are bent almost simultaneously.
- the deformation of adjacent curvature arcs begins at the constriction 18.
- FIG. 12 shows a stent 21 cut open along the section line S-S, which has a meandering support helix 22.
- the support helix 22 has almost rectilinear support struts 23, which are connected via arcs 24 of curvature. Furthermore, adjacent helical tracks 25 are connected by connecting elements 26 extending in the longitudinal direction 6. At the ends of the stent 21, the support helix 22 forms respective loops 27.
- the stent 21 is an example of a stent in which the support force is not applied by juxtaposed support rings, but by a support helix 22. Also at a stent of the type of stent 21 shown in Figure 12, the concept of weakening the archwire sheets 24 may be used. Thus, the curvature arcs 24 may have a shape corresponding to the curvature arches 5 or 17.
- FIG. 13 shows a curvature arc 28 extending between interfaces 29.
- the curvature bend 28 has a constriction 30, which is formed by an inserted into an inner arc 31 of the curvature arc 28 notch 32.
- the notch 32 does not have a sharply formed corner, since the stents are generally subjected to final electropolishing, by the sharp ones
- Edges and corners are rounded. In practice, it is therefore the case that the curvature of the inner arc 28 increases abruptly in the region of the constriction 32.
- a disadvantage of a curvature arc 28 of the type shown in Figure 13 is that 32 cracks may form in the region of the notch.
- the targeted selective weakening ensures that the deformation of the curvature arcs 28 takes place almost simultaneously.
- FIG. 14 shows a further curve 33, which has two bottlenecks 35 arranged away from a center line 34.
- the curvature bend 33 has, as it were, two joint points which can deform during a deformation of the curvature arc 33.
- FIG. 15 shows a curvature arc 36, which likewise has bottlenecks 37 off the center line 34, which are formed by notches 38, which are introduced into an inner arc 39 of the curvature arc 36.
- FIG. 16 shows a curvature arc 40 with a continuously curved inner arc 41 and an outer arc 42 which has a flat 43 through which a constriction 44 is formed.
- the stents 1, 13 and 16 described here have support rings 3, whose arc of curvature 5, 17, 24, 28, 33, 36 and 40 are bent at the same time and uniformly with an expansion of the stents 1, 13 and 16. As a result, a selective loading of the vessel walls is avoided.
- the bottlenecks 12 and 18 may extend along a curve of curvature. It is to be expected that a uniform stretching of the curvature curves 5 and 17 will continue even when the constrictions 12 and 18 extend over approximately 25%, in some cases over 50% of the arc length of the curvature curves 5 and 17. However, it is expected, as' ss particularly uniformly carried out the stretching of the arc of curvature of 5 and 17, when the constrictions 12 and 18 over less than 10%, preferably 5% of the arc length of the arc of curvature extending 5 and 17th
- those sections in which the curvature curves 5, 17, 24, 28, 33, 36 and 40 taper, extend over the largest possible area of the curvature curves 5, 17, 24, 28, 33, 36 and 40, to allow the most complete and uniform stretching of the curvature arc 5, 17, 24, 28, 33, 36 and 40.
- the tapering region should extend over at least 50% of the arc length, advantageously over 75%, preferably over 90% or even over 95% of the arc length.
- the curvature curves are free of sections of uniform cross-sectional area.
- the uniform and simultaneous stretching of the arc of curvature 5, 17, 24, 28, 33, 36 and 40 is favored.
- the uniform and simultaneous cations is further favored if, as in the recordss ⁇ examples of Figures 1 to 12, only a single bottleneck in Krüm ⁇ iungsbögen 5, 17 is present.
- curvature arcs 5, 17, 24, 28, 33, 36 and 40 can in principle be completely stretched in the exemplary embodiments illustrated here.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Optics & Photonics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005002811T DE112005002811A5 (de) | 2005-09-16 | 2005-09-16 | Stützprothese |
EP05792405.2A EP1809203B1 (de) | 2004-09-17 | 2005-09-16 | Stützprothese |
US11/687,483 US8628563B2 (en) | 2004-09-17 | 2007-03-16 | Support prosthesis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004045226.1 | 2004-09-17 | ||
DE102004045226A DE102004045226B4 (de) | 2004-09-17 | 2004-09-17 | Stützprothese |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/687,483 Continuation US8628563B2 (en) | 2004-09-17 | 2007-03-16 | Support prosthesis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006029619A1 true WO2006029619A1 (de) | 2006-03-23 |
Family
ID=35447837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001635 WO2006029619A1 (de) | 2004-09-17 | 2005-09-16 | Stützprothese |
Country Status (4)
Country | Link |
---|---|
US (1) | US8628563B2 (de) |
EP (1) | EP1809203B1 (de) |
DE (1) | DE102004045226B4 (de) |
WO (1) | WO2006029619A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049045A2 (en) * | 2006-10-18 | 2008-04-24 | Innovational Holdings, Llc | Stent with flexible hinges |
US20090204200A1 (en) * | 2006-02-14 | 2009-08-13 | Angiomed Gmbh & Co. Medizintechnik Kg | Highly Flexible Stent and Method of Manufacture |
WO2012101163A1 (de) * | 2011-01-25 | 2012-08-02 | Acandis Gmbh & Co. Kg | Medizinische vorrichtung mit einer gitterstruktur und behandlungssystem mit einer derartigen vorrichtung |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6878162B2 (en) | 2002-08-30 | 2005-04-12 | Edwards Lifesciences Ag | Helical stent having improved flexibility and expandability |
US7780721B2 (en) | 2004-09-01 | 2010-08-24 | C. R. Bard, Inc. | Stent and method for manufacturing the stent |
CN101732114B (zh) * | 2008-11-04 | 2014-07-30 | 上海微创医疗器械(集团)有限公司 | 开有载药槽的冠状动脉血管支架 |
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Also Published As
Publication number | Publication date |
---|---|
EP1809203A1 (de) | 2007-07-25 |
DE102004045226B4 (de) | 2008-01-17 |
US8628563B2 (en) | 2014-01-14 |
US20070239263A1 (en) | 2007-10-11 |
DE102004045226A1 (de) | 2006-03-30 |
EP1809203B1 (de) | 2018-10-31 |
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