CA2514487A1 - Multilayer balloon catheter - Google Patents

Multilayer balloon catheter Download PDF

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Publication number
CA2514487A1
CA2514487A1 CA 2514487 CA2514487A CA2514487A1 CA 2514487 A1 CA2514487 A1 CA 2514487A1 CA 2514487 CA2514487 CA 2514487 CA 2514487 A CA2514487 A CA 2514487A CA 2514487 A1 CA2514487 A1 CA 2514487A1
Authority
CA
Canada
Prior art keywords
balloon
polymer
article
flow direction
disc
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
Application number
CA 2514487
Other languages
French (fr)
Other versions
CA2514487C (en
Inventor
Albert Chin
John Jianhua Chen
Thomas A. Svatek
Ronald A. Sahatjian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boston Scientific Ltd Barbados
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2514487A1 publication Critical patent/CA2514487A1/en
Application granted granted Critical
Publication of CA2514487C publication Critical patent/CA2514487C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1029—Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3363—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a layered die, e.g. stacked discs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1075—Balloon catheters with special features or adapted for special applications having a balloon composed of several layers, e.g. by coating or embedding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/006—PBT, i.e. polybutylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • 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
    • B29L2022/00—Hollow articles
    • B29L2022/02—Inflatable articles
    • B29L2022/022—Balloons
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor
    • B29L2031/7542—Catheters
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y10T428/1359—Three or more layers [continuous layer]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y10T428/1393—Multilayer [continuous layer]
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/31736—Next to polyester
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]

Abstract

Multilayer medical devices (2), apparatuses (20) for making such devices, and methods of making such devices are disclosed.

Claims (74)

1. An article having a wall with at least three coextruded layers including first and second coextruded layers, wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds, and the article is capable of being stretch-molded into a balloon.
2. The article of claim 1, wherein the difference between the first and second apparent shear viscosities is at least about 75 Pascal-seconds.
3. The article of claim 1, wherein the difference between the first and second apparent shear viscosities is at least about 100 Pascal-seconds.
4. The article of claim 1, wherein the first and second layers are adjacent layers.
5. The article of claim 1, wherein the article is in the shape of a tube or a catheter shaft.
6. The article of claim 1, wherein the first polymer comprises a polyester.
7. The article of claim 6, wherein the second polymer comprises a polyester different from the first polymer.
8. The article of claim 7, wherein the second polymer comprises a PET.
9. The article of claim 7, Wherein the second polymer comprises a PBT.
10. The article of claim 1, wherein the first polymer comprises a polyamide.
11. The article of claim 10, wherein the second polymer comprises a polyamide different from the first polymer.
12. The article of claim 11, wherein the second polymer is selected from the group consisting of nylon 11, nylon 6, nylon 6/10, nylon 6/12, nylon 12 and aromatic nylons.
13. The article of claim 1, wherein, after being formed into a balloon, the article has a burst strength of at least about 10,000 psi.
14. The article of claim 1, wherein, after being formed into a balloon, the article passes the multiple inflation test.
15. The article of claim 1, wherein the article is capable of being stretch-molded to form a balloon selected from the group consisting of coronary balloons, aortic balloons, peripheral balloons, reperfusion balloons, endoscopy balloons, urology balloons and neurology balloons.
16. The article of claim 1, wherein the wall has at least four coextruded layers.
17. A balloon having a wall with at least three coextruded layers including first and second coextruded layers, wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds, and the balloon has a burst strength of at least about 10,000 psi.
18. The balloon of claim 17, wherein the balloon has a burst strength of at least about 14,000 psi.
19. The balloon of claim 17, wherein the balloon has a burst strength of at least about 18,000 psi.
20. The balloon of claim 17, wherein the first and second layers are adjacent layers.
21. The balloon of claim 17, the first polymer comprises a polyester.
22. The balloon of claim 21, wherein the second polymer comprises a polyester different from the first polymer.
23. The balloon of claim 22, wherein the second polymer comprises a PET.
24. The balloon of claim 22, wherein the second polymer comprises a PBT.
25. The balloon of claim 17, wherein the first polymer comprises a polyamide.
26. The balloon of claim 25, wherein the second polymer comprises a polyamide different from the first polymer.
27. The balloon of claim 26, wherein the second polymer is selected from the group consisting of nylon 11, nylon 6, nylon 6/10, nylon 6/12, nylon 12 and aromatic nylons.
28. The balloon of claim 17, wherein the balloon passes the multiple inflation test.
29. The balloon of claim 17, wherein the balloon is selected from the group consisting of coronary balloons, aortic balloons, peripheral balloons, reperfusion balloons, endoscopy balloons, urology balloons and neurology balloons.
30. The balloon of claim 17, wherein the wall has at least four coextruded layers.
31. The balloon of claim 17, wherein the balloon has a puncture force of at least about 30 grams.
32. The balloon of claim 17, wherein the balloon forms a portion of a balloon catheter.
33. The balloon of claim 17, wherein first and second polymers are biaxially oriented.
34. An extrusion apparatus for making a multilayer article, comprising:
a first section;
a second section; and a plurality of discs between the first and second sections, each of the discs having at least one passageway configured to permit fluid flow therethrough in a flow direction, wherein a thickness of at least one of the discs in the flow direction is about one inch or less, and the passageway of at least one of the discs is spiral shaped.
35. The apparatus of claim 34, wherein the passageway of each disc is spiral shaped.
36. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.75 inch or less.
37. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.5 inch or less.
38. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.4 inch or less.
39. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.3 inch or less.
40. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.2 inch or less.
41. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.15 inch or less.
42. The apparatus of claim 34, wherein the thickness of the at least one disc in the flow direction is about 0.1 inch or less.
43. The apparatus of claim 34, wherein each of the discs has a thickness in the flow direction that is about one inch or less.
44. The apparatus of claim 34, wherein the apparatus is a disc head extrusion apparatus.
45. The apparatus of claim 34, wherein the apparatus is configured to be used in the fabrication of an article selected from the group consisting of multilayer medical balloons, multilayer tubes, and multilayer catheter shafts.
46. The apparatus of claim 34, wherein the apparatus is configured to be used in the fabrication of a multilayer medical balloon.
47. An extrusion apparatus for making a multilayer article, comprising:
a first section;
a second section; and a plurality of discs between the first and second sections, each of the discs having at least one passageway configured to permit fluid flow therethrough in a flow direction, wherein a thickness of at least one of the discs in the flow direction is about one inch or less, and at least one of the discs includes a cone shaped portion extending substantially parallel to the flow direction.
48. The apparatus of claim 47, wherein all but one of the discs includes a cone shaped portion extending substantially parallel to the flow direction.
49. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.75 inch or less.
50. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.5 inch or less.
51. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.4 inch or less.
52. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.3 inch or less.
53. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.2 inch or less.
54. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.15 inch or less.
55. The apparatus of claim 47, wherein the thickness of the at least one disc in the flow direction is about 0.1 inch or less.
56. The apparatus of claim 47, wherein each of the discs has a thickness in the flow direction that is about one inch or less.
57. The apparatus of claim 47, wherein the apparatus is a disc head extrusion apparatus.
58. The apparatus of claim 47, wherein the apparatus is configured to be used in the fabrication of an article selected from the group consisting of multilayer medial balloons, multilayer tubes and catheter shafts.
59. The apparatus of claim 47, wherein the apparatus is configured to be used in the fabrication of a multilayer medical balloon.
60. A method, comprising:
coextruding at least three polymer layers, including first and second coextruded layers, to form an article, wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds.
61. The method of claim 60, further comprising forming the article into a balloon.
62. The method of claim 60, wherein the first polymer is extruded at a temperature of from about 540°F to about 600°F.
63. The method of claim 62, wherein the second polymer is extruded at a temperature of from about 400°F to about 475°F.
64. The method of claim 60, further comprising using a crosshead pressure of about 5,000 psi or less.
65. The method of claim 60, further comprising using a crosshead temperature of from about 500°F to about 550°F.
66. The method of claim 60, further comprising using a screw speed of about 15 rpm to about 30 rpm for the first polymer.
67. The method of claim 65, further comprising using a screw speed of about 15 rpm to about 25 rpm for the second polymer.
68. The method of claim 60, wherein extruding the first and second polymer comprises passing the first and second polymers through first and second spiral shaped discs, respectively.
69. The method of claim 60, wherein extruding the first and second polymer comprises passing the first and second polymers through first and second cone shaped portions configured to allow flow therethrough in first and second flow directions, respectively, the first and second cone shaped portions extending substantially parallel to the first and second flow directions, respectively.
70. A method, comprising:
coextruding multiple polymer layers through corresponding multiple discs to form an article having a wall comprising multiple coextruded polymer layers, wherein at least one of the discs has a spiral shaped passageway.
71. The method of claim 69, wherein each disc has a spiral shaped passageway.
72. A method, comprising:
coextruding multiple polymer layers through corresponding multiple discs to form an article having a wall comprising multiple coextruded polymer layers, wherein at least one of the discs has a passageway configured to permit flow therethrough in a flow direction, and at least one of the discs includes a cone shaped portion extending substantially parallel to the flow direction.
73. The method of claim 71, wherein each disc has a spiral shaped passageway.
74. A balloon having a wall with at least three coextruded layers including first and second coextruded layers, wherein the first coextruded layer comprises a first polymer having a first apparent shear viscosity, the second coextruded layer comprises a second polymer having a second apparent shear viscosity, a difference between the first and second apparent shear viscosities is at least about 50 Pascal-seconds, and the balloon is capable of passing the multiple inflation test.
CA 2514487 2003-01-27 2004-01-22 Multilayer balloon catheter Expired - Fee Related CA2514487C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/351,695 US6951675B2 (en) 2003-01-27 2003-01-27 Multilayer balloon catheter
US10/351,695 2003-01-27
PCT/US2004/001672 WO2004069320A1 (en) 2003-01-27 2004-01-22 Multilayer balloon catheter

Publications (2)

Publication Number Publication Date
CA2514487A1 true CA2514487A1 (en) 2004-08-19
CA2514487C CA2514487C (en) 2011-12-20

Family

ID=32735834

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2514487 Expired - Fee Related CA2514487C (en) 2003-01-27 2004-01-22 Multilayer balloon catheter

Country Status (5)

Country Link
US (4) US6951675B2 (en)
EP (1) EP1587569A1 (en)
JP (1) JP4642745B2 (en)
CA (1) CA2514487C (en)
WO (1) WO2004069320A1 (en)

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