CA2409862A1 - Methods and apparatus for manufacturing an intravascular stent - Google Patents
Methods and apparatus for manufacturing an intravascular stent Download PDFInfo
- Publication number
- CA2409862A1 CA2409862A1 CA002409862A CA2409862A CA2409862A1 CA 2409862 A1 CA2409862 A1 CA 2409862A1 CA 002409862 A CA002409862 A CA 002409862A CA 2409862 A CA2409862 A CA 2409862A CA 2409862 A1 CA2409862 A1 CA 2409862A1
- Authority
- CA
- Canada
- Prior art keywords
- stent
- mandrel
- intravascular stent
- intravascular
- groove
- 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.)
- Granted
Links
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
-
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/001—Tubular films, sleeves
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S623/00—Prosthesis, i.e. artificial body members, parts thereof, or aids and accessories therefor
- Y10S623/901—Method of manufacturing prosthetic device
-
- 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
- Y10T83/00—Cutting
- Y10T83/02—Other than completely through work thickness
- Y10T83/0304—Grooving
Abstract
The invention relates to methods and apparatus for manufacturing intravascular stents wherein the intravascular stent has its inner surface treated to promote the migration of endothelial cells onto the inner surface of the intravascular stent. In particular, the inner surface of the intravascular stent has at least one groove formed therein.
Claims (36)
1. A method of manufacturing a metallic intravascular stent comprising the steps of:
providing an intravascular stent having an inner surface and an outer surface;
forming at least one groove in the inner surface of the intravascular stent by disposing a mandrel, having an outer surface, inside the intravascular stent; and imparting at least one groove from a raised pattern formed on the outer surface of the mandrel to the inner surface of the intravascular stent by a mechanical force.
providing an intravascular stent having an inner surface and an outer surface;
forming at least one groove in the inner surface of the intravascular stent by disposing a mandrel, having an outer surface, inside the intravascular stent; and imparting at least one groove from a raised pattern formed on the outer surface of the mandrel to the inner surface of the intravascular stent by a mechanical force.
2. The method of claim 1, wherein the mandrel has an outer diameter equal to the inner diameter of the intravascular stent when the stent is in a collapsed state.
3. The method of claim 1, wherein the mandrel has an outer diameter equal to the inner diameter of the intravascular stent when the stent is in an expanded state.
4. The method of claim 1, including the steps of providing the mechanical force by at least one calendaring roller, and rotating the at least one calendaring roller against the outer surface of the intravascular stent.
5. The method of claim 1, wherein the mechanical force is provided by at least one stamping apparatus disposed about the outer surface of the intravascular stent, and the at least one stamping apparatus is forced against the outer surface of the intravascular stent.
6. The method of claim 5, wherein relative rotating motion is provided between the at least one stamping apparatus, and the intravascular stent with the mandrel disposed therein;
7. The method of claim 1, including the steps of:
utilizing an impression roller having an outer surface, as the mandrel inside the intravascular stent; and rotating the impression roller within the intravascular stent to impart at least one groove from a pattern formed on the outer surface of the impression roller to the inner surface of the intravascular stent.
utilizing an impression roller having an outer surface, as the mandrel inside the intravascular stent; and rotating the impression roller within the intravascular stent to impart at least one groove from a pattern formed on the outer surface of the impression roller to the inner surface of the intravascular stent.
8. The method of claim 1, including the steps of:
utilizing an expanding mandrel having a plurality of mating and tapered segments, the mandrel having an unexpanded and an expanded configuration;
disposing the stent upon an expanding mandrel in the unexpanded configuration of the mandrel; and expanding the mandrel outwardly to the expanded configuration to impart the at least one groove from the pattern on the outer surface of the mandrel to the inner surface of the intravascular stent.
utilizing an expanding mandrel having a plurality of mating and tapered segments, the mandrel having an unexpanded and an expanded configuration;
disposing the stent upon an expanding mandrel in the unexpanded configuration of the mandrel; and expanding the mandrel outwardly to the expanded configuration to impart the at least one groove from the pattern on the outer surface of the mandrel to the inner surface of the intravascular stent.
9. The method of claim 1, including the steps of:
utilizing a tapered mandrel; and providing relative movement between the tapered mandrel and the inner surface of the intravascular stent.
utilizing a tapered mandrel; and providing relative movement between the tapered mandrel and the inner surface of the intravascular stent.
10. The method of claim 9, including the step of:
disposing a plurality of cutting elements on the outer surface of the tapered mandrel.
disposing a plurality of cutting elements on the outer surface of the tapered mandrel.
11. The method of claim 9, wherein the intravascular stent is in an expanded configuration.
12. The method of claim 10, wherein the cutting elements are a plurality of cutting teeth.
13. The method of claim 12, wherein the cutting teeth are abrasive particles.
14. The method of claim 10, wherein the cutting elements are provided by the outer surface of the mandrel having a metal cutting file profile.
15. A method of manufacturing a metallic intravascular stent comprising the steps of:
providing an intravascular stent having an inner surface and an outer surface;
and forming at least one groove in the inner surface of the intravascular stent by etching the inner surface with a chemical process.
providing an intravascular stent having an inner surface and an outer surface;
and forming at least one groove in the inner surface of the intravascular stent by etching the inner surface with a chemical process.
16. The method of claim 15, wherein the chemical process includes the steps of:
coating the inner surface of the stent with a photosensitive material;
inserting a mask into the stent;
irradiating the inner surface of the stent by a light source;
removing the mask from the stent; and chemically etching the inner surface of the stent to produce at least one groove in the inner surface of the stent.
coating the inner surface of the stent with a photosensitive material;
inserting a mask into the stent;
irradiating the inner surface of the stent by a light source;
removing the mask from the stent; and chemically etching the inner surface of the stent to produce at least one groove in the inner surface of the stent.
17. The method of claim 16, wherein the mask is inserted into the stent by first disposing the mask upon a deflated balloon and then inserting the deflated balloon into the stent.
18. The method of claim 17, wherein the balloon is expanded after the insertion of the balloon into the stent.
19. The method of claim 16, wherein the light source is a coaxial light source with multiple beams of light in a single plane.
20. The method of claim 16, wherein the light source is displaced along the longitudinal axis of the stent.
21. The method of claim 16, wherein the light source is driven by a stepper motor for rotational movements.
22. The method of claim 16, wherein the light source is fixed, while said mask is driven for rotational movements.
23. A method of manufacturing a metallic intravascular stent comprising the steps of:
forming an intravascular stent having an inner surface and an outer surface;
and forming at least one groove on the inner surface of the stent by etching the inner surface by electric discharge machining.
forming an intravascular stent having an inner surface and an outer surface;
and forming at least one groove on the inner surface of the stent by etching the inner surface by electric discharge machining.
24. The method of claim 23, including the steps of:
inserting an electric discharge machining electrode into the stent;
moving the electrode within the stent; and providing current to the electrode to cut at least one groove into the inner surface of the stent.
inserting an electric discharge machining electrode into the stent;
moving the electrode within the stent; and providing current to the electrode to cut at least one groove into the inner surface of the stent.
25. An apparatus for manufacturing a metallic intravascular stent, having an inner surface and an outer surface, with at least one groove formed in the inner surface of the intravascular stent, comprising:
a mandrel, having an outer surface, disposed within the intravascular stent;
the outer surface of the mandrel having a raised pattern formed on the outer surface of the mandrel, from which at least one groove may be imparted to the inner surface of the stent; and the mandrel and the inner surface of the stent are adapted for relative movement between each other to force the at least one groove to be imparted to the inner surface of the intravascular stent.
a mandrel, having an outer surface, disposed within the intravascular stent;
the outer surface of the mandrel having a raised pattern formed on the outer surface of the mandrel, from which at least one groove may be imparted to the inner surface of the stent; and the mandrel and the inner surface of the stent are adapted for relative movement between each other to force the at least one groove to be imparted to the inner surface of the intravascular stent.
26. The apparatus of claim 25, including at least one calendaring roller disposed against a portion of the outer surface of the stent, the calendaring roller being adapted to be rotated around the stent to force the inner surface of the stent to contact the outer surface of the mandrel.
27. The apparatus of claim 25, including at least one stamping apparatus disposed about the outer surface of the stent, and the at least one stamping apparatus is adapted to be forced against the outer surface of the stent.
28. The apparatus of claim 27, wherein the at least one stamping apparatus is at least one punch press having a stamping segment.
29. The apparatus of claim 25, wherein the mandrel is an impression roller having an outer surface, with a raised pattern formed on the outer surface of the impression roller.
30. The apparatus of claim 29, wherein the stent has a diameter and the impression roller has a diameter; the diameter of the impression roller being smaller than the diameter of the stent; and the impression roller is mounted for rotational movement within the stent.
31. The apparatus of claim 25, wherein the mandrel is an expanding mandrel having a plurality of mating and tapered segments.
32. The apparatus of claim 25, wherein the mandrel is a tapered mandrel, and the tapered mandrel is mounted for relative movement with respect to the inner surface of the stent.
33. The apparatus of claim 25 including a plurality of cutting elements being disposed on the outer surface of the mandrel.
34. The apparatus of claim 33, wherein the cutting elements are a plurality of cutting teeth.
35. The apparatus of claim 34, wherein the cutting teeth are abrasive particles.
36. The apparatus of claim 25, wherein the outer surface of the mandrel has the profile of a metal cutting file.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2780092A CA2780092C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
CA2780089A CA2780089C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20606000P | 2000-05-19 | 2000-05-19 | |
US60/206,060 | 2000-05-19 | ||
PCT/US2001/016374 WO2001089420A2 (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2780092A Division CA2780092C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
CA2780089A Division CA2780089C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2409862A1 true CA2409862A1 (en) | 2001-11-29 |
CA2409862C CA2409862C (en) | 2012-08-28 |
Family
ID=22764809
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2409862A Expired - Lifetime CA2409862C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
CA2780089A Expired - Lifetime CA2780089C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
CA2780092A Expired - Lifetime CA2780092C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2780089A Expired - Lifetime CA2780089C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
CA2780092A Expired - Lifetime CA2780092C (en) | 2000-05-19 | 2001-05-18 | Methods and apparatus for manufacturing an intravascular stent |
Country Status (10)
Country | Link |
---|---|
US (6) | US8037733B2 (en) |
EP (2) | EP1359865B1 (en) |
JP (4) | JP4846171B2 (en) |
AT (2) | ATE345749T1 (en) |
AU (3) | AU2001264750B2 (en) |
CA (3) | CA2409862C (en) |
DE (1) | DE60124772T2 (en) |
DK (1) | DK1769775T3 (en) |
ES (2) | ES2369784T3 (en) |
WO (1) | WO2001089420A2 (en) |
Cited By (15)
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US7931683B2 (en) | 2007-07-27 | 2011-04-26 | Boston Scientific Scimed, Inc. | Articles having ceramic coated surfaces |
US7938855B2 (en) | 2007-11-02 | 2011-05-10 | Boston Scientific Scimed, Inc. | Deformable underlayer for stent |
US7942926B2 (en) | 2007-07-11 | 2011-05-17 | Boston Scientific Scimed, Inc. | Endoprosthesis coating |
US7976915B2 (en) | 2007-05-23 | 2011-07-12 | Boston Scientific Scimed, Inc. | Endoprosthesis with select ceramic morphology |
US7981150B2 (en) | 2006-11-09 | 2011-07-19 | Boston Scientific Scimed, Inc. | Endoprosthesis with coatings |
US8002823B2 (en) | 2007-07-11 | 2011-08-23 | Boston Scientific Scimed, Inc. | Endoprosthesis coating |
US8029554B2 (en) | 2007-11-02 | 2011-10-04 | Boston Scientific Scimed, Inc. | Stent with embedded material |
US8066763B2 (en) | 1998-04-11 | 2011-11-29 | Boston Scientific Scimed, Inc. | Drug-releasing stent with ceramic-containing layer |
US8067054B2 (en) | 2007-04-05 | 2011-11-29 | Boston Scientific Scimed, Inc. | Stents with ceramic drug reservoir layer and methods of making and using the same |
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US8067054B2 (en) | 2007-04-05 | 2011-11-29 | Boston Scientific Scimed, Inc. | Stents with ceramic drug reservoir layer and methods of making and using the same |
US7976915B2 (en) | 2007-05-23 | 2011-07-12 | Boston Scientific Scimed, Inc. | Endoprosthesis with select ceramic morphology |
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US7931683B2 (en) | 2007-07-27 | 2011-04-26 | Boston Scientific Scimed, Inc. | Articles having ceramic coated surfaces |
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US8029554B2 (en) | 2007-11-02 | 2011-10-04 | Boston Scientific Scimed, Inc. | Stent with embedded material |
US7938855B2 (en) | 2007-11-02 | 2011-05-10 | Boston Scientific Scimed, Inc. | Deformable underlayer for stent |
US8216632B2 (en) | 2007-11-02 | 2012-07-10 | Boston Scientific Scimed, Inc. | Endoprosthesis coating |
US8231980B2 (en) | 2008-12-03 | 2012-07-31 | Boston Scientific Scimed, Inc. | Medical implants including iridium oxide |
US8071156B2 (en) | 2009-03-04 | 2011-12-06 | Boston Scientific Scimed, Inc. | Endoprostheses |
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