CA2225764C - Stent fabrication method and apparatus - Google Patents
Stent fabrication method and apparatus Download PDFInfo
- Publication number
- CA2225764C CA2225764C CA002225764A CA2225764A CA2225764C CA 2225764 C CA2225764 C CA 2225764C CA 002225764 A CA002225764 A CA 002225764A CA 2225764 A CA2225764 A CA 2225764A CA 2225764 C CA2225764 C CA 2225764C
- Authority
- CA
- Canada
- Prior art keywords
- mandrel
- deforming
- long side
- deforming blade
- stent
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
- B21F45/008—Wire-working in the manufacture of other particular articles of medical instruments, e.g. stents, corneal rings
-
- 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
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/127—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an enclosure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
- B23K33/006—Filling of continuous seams for cylindrical workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
-
- 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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12188—All metal or with adjacent metals having marginal feature for indexing or weakened portion for severing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12201—Width or thickness variation or marginal cuts repeating longitudinally
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12229—Intermediate article [e.g., blank, etc.]
Abstract
A stent and a method for fabricating the stent are disclosed. The stent has an originally flat pattern and connection points where the sides of the flat pattern are joined. The method includes the steps of a) cutting a stent pattern into a flat piece of metal thereby to produce a metal pattern, b) deforming the metal pattern so as to cause two opposing sides to meet, and c) joining the two opposing sides at least at one point. Substantially no portion of the stent projects into the lumen of the stent when the stent is expanded against the internal wall of a blood vessel.
Claims (5)
1. Apparatus for fabricating a stent, comprising:
a) a base having a platform adapted to receive a flat sheet of metal to be formed into said stent, said flat sheet of metal having a longitudinal axis, a first major surface, a second major surface, a first long side, and a second long side, said first and said second long sides substantially parallel to said longitudinal axis of said stent;
b) a mandrel having a substantially cylindrical external surface and having a first end and a second end defining a longitudinal axis, said mandrel sized to have a cross-sectional diameter substantially equal to or less than the internal diameter of said stent to be fabricated;
c) means for securing said mandrel against a major surface of said flat sheet of metal;
d) a plurality of deforming blades disposed around the periphery of said mandrel for deforming said flat sheet of metal against said external surface of said mandrel so that said flat sheet of metal is deformed into a substantially tubular shape, said blades disposed between said first end and said second end of said mandrel, each of said deforming blades adapted for independent and selective movement in a first direction toward said mandrel and a second direction away from said mandrel so as to selectively impinge upon said mandrel or upon a portion of said sheet disposed between said mandrel and each of said deforming blades, each of said deforming blades further adapted so that said first long side and said second lone side of said sheet remain substantially parallel to each other when said stent is deformed into said tubular shape;
e) means for selectively moving each of said deforming blades in a first direction toward said mandrel and in a second direction away from said mandrel; and f) means for securing said first long side of said sheet to said second lone side of said sheet, wherein a plurality of said deforming blades are adapted to secure said first long side and said second long side against said external surface of said mandrel while permitting a laser to contact said first long side and said second long side to secure said first long side to said second lone side, and wherein a plurality of said deforming blades are provided with a plurality of scalloped apertures, said apertures sized and disposed to permit said plurality of blades to secure said first long side and said second long side against said external surface of said mandrel while providing access to said laser to predetermined portions of said first side and said long side to secure said first long side to said second long side.
a) a base having a platform adapted to receive a flat sheet of metal to be formed into said stent, said flat sheet of metal having a longitudinal axis, a first major surface, a second major surface, a first long side, and a second long side, said first and said second long sides substantially parallel to said longitudinal axis of said stent;
b) a mandrel having a substantially cylindrical external surface and having a first end and a second end defining a longitudinal axis, said mandrel sized to have a cross-sectional diameter substantially equal to or less than the internal diameter of said stent to be fabricated;
c) means for securing said mandrel against a major surface of said flat sheet of metal;
d) a plurality of deforming blades disposed around the periphery of said mandrel for deforming said flat sheet of metal against said external surface of said mandrel so that said flat sheet of metal is deformed into a substantially tubular shape, said blades disposed between said first end and said second end of said mandrel, each of said deforming blades adapted for independent and selective movement in a first direction toward said mandrel and a second direction away from said mandrel so as to selectively impinge upon said mandrel or upon a portion of said sheet disposed between said mandrel and each of said deforming blades, each of said deforming blades further adapted so that said first long side and said second lone side of said sheet remain substantially parallel to each other when said stent is deformed into said tubular shape;
e) means for selectively moving each of said deforming blades in a first direction toward said mandrel and in a second direction away from said mandrel; and f) means for securing said first long side of said sheet to said second lone side of said sheet, wherein a plurality of said deforming blades are adapted to secure said first long side and said second long side against said external surface of said mandrel while permitting a laser to contact said first long side and said second long side to secure said first long side to said second lone side, and wherein a plurality of said deforming blades are provided with a plurality of scalloped apertures, said apertures sized and disposed to permit said plurality of blades to secure said first long side and said second long side against said external surface of said mandrel while providing access to said laser to predetermined portions of said first side and said long side to secure said first long side to said second long side.
2. Apparatus for fabricating a stent, comprising:
a) a laser housing;
b) a laser disposed within and selectively movable within said housing;
c) a movable table having a first end and a second end and adapted for selective movement into and out of said laser housing, said table adapted so that when said first end of said table is disposed within said laser housing said second end of said table is disposed outside of said housing and when said second end of s aid table is disposed within said laser housing said first end of said table is disposed outside of said laser housing;
d) a plurality of stent folders disposed at said first end of said table and a plurality of stent folders disposed at said second end of said table, each of said stent folders comprising:
a) a base having a platform adapted to receive a flat sheet of metal to be formed into said stent, said flat sheet of metal having a longitudinal axis, a first major surface, a second major surface, a first long side, and a second long side, said first and said second long side s substantially parallel to said longitudinal axis, said sheet provided with a plurality of alignment of apertures;
b) a plurality of alignment pins projecting from each of said platforms, said pins sized to engage said alignment apertures and align said sheet on said platform;
c) a mandrel having a substantially cylindrical external surface and having a first end, a second end, and a longitudinal axis, said mandrel sized to have a cross-sectional diameter substantially equal to or less than the internal diameter of said stent to be fabricated, said platform provided with a first concave recess adapted to receive said first end of said mandrel and a second concave recess adapted to receive said second end of said mandrel;
d) a means for securing said mandrel, said means an arm hingedly connected to said platform and adapted for movement in a first direction toward said platform and in a second direction away from said platform for securing said mandrel against a major surface of said flat sheet of metal;
e) a first deforming blade provided with a first deforming blade tip; a second deforming blade provided with a second deforming blade tip; a third deforming blade provided with a third deforming blade tip; a fourth deforming blade provided with a fourth deforming blade tip; a fifth deforming blade provided with a fifth deforming blade tip; and a sixth deforming blade provided with a sixth deforming blade tip, said blades disposed around said external surface of said mandrel, said deforming blade tips adapted to deform said flat sheet of metal against said external surface of said mandrel so that said flat sheet of metal is deformed into a substantially tubular shape substantially conforming to said external surface, said deforming blades disposed between said first end and said second end of said mandrel, each of said deforming blades adapted for independent and selective movement in a first direction toward said mandrel and a second direction away from said mandrel so as to selectively impinge said deforming blade tips against said mandrel or upon a portion of said sheet disposed between said mandrel and each of said deforming blade tips, each of said deforming blades further adapted so that said first long side and said second long side of said sheet remain substantially parallel to each other when said stent is deformed into said tubular shape, said third and said sixth deforming blade tips provided with a plurality of scalloped laser apertures, said apertures sized and disposed to permit said third and said sixth deforming blade tips to secure said first long side and said second long side against said external surface of said mandrel while providing said laser access to predetermined portions of said first long side and said second long side in order to weld said first long side to said second long side;
f) a first motor connected to said first deforming blade; a second motor connected to said second deforming blade; a third motor connected to said third deforming blade; a fourth motor connected to said fourth deforming blade; a fifth motor connected to said fifth deforming blade; and a sixth motor connected to said sixth deforming blade, each of said motors adapted for selectively moving each of said deforming blades to which it is connected in a first direction toward said mandrel and in a second direction away from said mandrel; and g) a computer for controlling: the sequence which said first end of said table and said second end of said table are disposed within said laser housing; for controlling the sequence and degree to which each of said plurality of deforming blade tips impinges upon said mandrel or a portion of said sheet disposed between said mandrel and each of said deforming blade tips; and for controlling the sequence, pattern, location, and amount of energy said laser applies to each of said first and second long sides of each of said sheets disposed on each of said plurality of stent folders.
a) a laser housing;
b) a laser disposed within and selectively movable within said housing;
c) a movable table having a first end and a second end and adapted for selective movement into and out of said laser housing, said table adapted so that when said first end of said table is disposed within said laser housing said second end of said table is disposed outside of said housing and when said second end of s aid table is disposed within said laser housing said first end of said table is disposed outside of said laser housing;
d) a plurality of stent folders disposed at said first end of said table and a plurality of stent folders disposed at said second end of said table, each of said stent folders comprising:
a) a base having a platform adapted to receive a flat sheet of metal to be formed into said stent, said flat sheet of metal having a longitudinal axis, a first major surface, a second major surface, a first long side, and a second long side, said first and said second long side s substantially parallel to said longitudinal axis, said sheet provided with a plurality of alignment of apertures;
b) a plurality of alignment pins projecting from each of said platforms, said pins sized to engage said alignment apertures and align said sheet on said platform;
c) a mandrel having a substantially cylindrical external surface and having a first end, a second end, and a longitudinal axis, said mandrel sized to have a cross-sectional diameter substantially equal to or less than the internal diameter of said stent to be fabricated, said platform provided with a first concave recess adapted to receive said first end of said mandrel and a second concave recess adapted to receive said second end of said mandrel;
d) a means for securing said mandrel, said means an arm hingedly connected to said platform and adapted for movement in a first direction toward said platform and in a second direction away from said platform for securing said mandrel against a major surface of said flat sheet of metal;
e) a first deforming blade provided with a first deforming blade tip; a second deforming blade provided with a second deforming blade tip; a third deforming blade provided with a third deforming blade tip; a fourth deforming blade provided with a fourth deforming blade tip; a fifth deforming blade provided with a fifth deforming blade tip; and a sixth deforming blade provided with a sixth deforming blade tip, said blades disposed around said external surface of said mandrel, said deforming blade tips adapted to deform said flat sheet of metal against said external surface of said mandrel so that said flat sheet of metal is deformed into a substantially tubular shape substantially conforming to said external surface, said deforming blades disposed between said first end and said second end of said mandrel, each of said deforming blades adapted for independent and selective movement in a first direction toward said mandrel and a second direction away from said mandrel so as to selectively impinge said deforming blade tips against said mandrel or upon a portion of said sheet disposed between said mandrel and each of said deforming blade tips, each of said deforming blades further adapted so that said first long side and said second long side of said sheet remain substantially parallel to each other when said stent is deformed into said tubular shape, said third and said sixth deforming blade tips provided with a plurality of scalloped laser apertures, said apertures sized and disposed to permit said third and said sixth deforming blade tips to secure said first long side and said second long side against said external surface of said mandrel while providing said laser access to predetermined portions of said first long side and said second long side in order to weld said first long side to said second long side;
f) a first motor connected to said first deforming blade; a second motor connected to said second deforming blade; a third motor connected to said third deforming blade; a fourth motor connected to said fourth deforming blade; a fifth motor connected to said fifth deforming blade; and a sixth motor connected to said sixth deforming blade, each of said motors adapted for selectively moving each of said deforming blades to which it is connected in a first direction toward said mandrel and in a second direction away from said mandrel; and g) a computer for controlling: the sequence which said first end of said table and said second end of said table are disposed within said laser housing; for controlling the sequence and degree to which each of said plurality of deforming blade tips impinges upon said mandrel or a portion of said sheet disposed between said mandrel and each of said deforming blade tips; and for controlling the sequence, pattern, location, and amount of energy said laser applies to each of said first and second long sides of each of said sheets disposed on each of said plurality of stent folders.
3. The apparatus of claim 2, wherein each of said blade deforming tips has a length substantially equal to said first and said second long sides of said flat sheet of metal.
4. The apparatus of claim 2 wherein said deforming blade tips are concave.
5. The apparatus of claim 2 wherein said third deforming blade tip is substantially identical to said sixth deforming blade tip; said second deforming blade tip is substantially identical to said fifth deforming blade tip; and said first deforming blade tip is substantially identical to said fourth deforming blade tip.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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CA2556585A CA2556585C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556581A CA2556581C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556570A CA2556570C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556578A CA2556578C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556572A CA2556572C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556576A CA2556576C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
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US08/774,970 | 1996-12-26 | ||
US08/774,970 US5906759A (en) | 1996-12-26 | 1996-12-26 | Stent forming apparatus with stent deforming blades |
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CA002556578A Division CA2556578C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA2556585A Division CA2556585C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556581A Division CA2556581C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556572A Division CA2556572C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556576A Division CA2556576C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
CA002556570A Division CA2556570C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
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CA2225764A1 CA2225764A1 (en) | 1998-06-26 |
CA2225764C true CA2225764C (en) | 2007-02-06 |
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CA002225764A Expired - Lifetime CA2225764C (en) | 1996-12-26 | 1997-12-23 | Stent fabrication method and apparatus |
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EP (1) | EP0853927B1 (en) |
JP (1) | JP3725687B2 (en) |
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BR (1) | BR9715033A (en) |
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UA (1) | UA43923C2 (en) |
WO (1) | WO1998029025A2 (en) |
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-
1996
- 1996-12-26 US US08/774,970 patent/US5906759A/en not_active Expired - Lifetime
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1997
- 1997-12-22 CZ CZ974160A patent/CZ416097A3/en unknown
- 1997-12-23 EP EP97122841A patent/EP0853927B1/en not_active Expired - Lifetime
- 1997-12-23 SG SG200000975A patent/SG93226A1/en unknown
- 1997-12-23 NZ NZ329481A patent/NZ329481A/en unknown
- 1997-12-23 DE DE69735841T patent/DE69735841T2/en not_active Expired - Lifetime
- 1997-12-23 EE EE9700349A patent/EE04174B1/en not_active IP Right Cessation
- 1997-12-23 NO NO19976076A patent/NO314345B1/en not_active IP Right Cessation
- 1997-12-23 CA CA002225764A patent/CA2225764C/en not_active Expired - Lifetime
- 1997-12-23 NZ NZ501876A patent/NZ501876A/en unknown
- 1997-12-23 SK SK1775-97A patent/SK177597A3/en unknown
- 1997-12-23 SG SG200000972A patent/SG87087A1/en unknown
- 1997-12-23 AT AT97122841T patent/ATE325585T1/en not_active IP Right Cessation
- 1997-12-24 AU AU49239/97A patent/AU739820B2/en not_active Expired
- 1997-12-24 PL PL97324018A patent/PL184956B1/en not_active IP Right Cessation
- 1997-12-24 RU RU97122289/02A patent/RU2209094C2/en not_active IP Right Cessation
- 1997-12-24 DE DE19757888A patent/DE19757888A1/en not_active Ceased
- 1997-12-24 CN CN97109366A patent/CN1185977A/en active Pending
- 1997-12-24 BR BR9715033-9A patent/BR9715033A/en not_active Application Discontinuation
- 1997-12-25 UA UA97126292A patent/UA43923C2/en unknown
- 1997-12-25 WO PCT/IL1997/000431 patent/WO1998029025A2/en active Application Filing
- 1997-12-25 AU AU58762/98A patent/AU5876298A/en not_active Abandoned
- 1997-12-25 IL IL12276797A patent/IL122767A/en not_active IP Right Cessation
- 1997-12-25 IL IL187294A patent/IL187294A/en not_active IP Right Cessation
- 1997-12-26 JP JP36658997A patent/JP3725687B2/en not_active Expired - Lifetime
- 1997-12-26 AR ARP970106199A patent/AR010861A1/en unknown
- 1997-12-26 KR KR1019970074113A patent/KR19980064675A/en active IP Right Grant
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1998
- 1998-07-02 US US09/109,532 patent/US6299755B1/en not_active Expired - Lifetime
- 1998-07-02 US US09/109,844 patent/US6692522B1/en not_active Expired - Lifetime
- 1998-07-02 US US09/109,326 patent/US5997703A/en not_active Expired - Lifetime
- 1998-07-02 US US09/109,772 patent/US6114049A/en not_active Expired - Lifetime
- 1998-07-02 US US09/109,535 patent/US6197048B1/en not_active Expired - Lifetime
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2000
- 2000-08-04 AR ARP000104046A patent/AR025047A1/en unknown
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2002
- 2002-11-15 NO NO20025481A patent/NO20025481D0/en not_active Application Discontinuation
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2004
- 2004-02-17 US US10/781,541 patent/US7208009B2/en not_active Expired - Fee Related
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