Composite Medical Textile Material and Implantable Devices Made Therefrom

• US 20100137969A1
• Filed: 01/26/2010
• Published: 06/03/2010
• Est. Priority Date: 04/23/2004
• Status: Active Grant

• Current Assignee: Lifeshield Sciences LLC (Acacia Research Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Sowinski, Krzysztof, Rakos, Ronald
• Granted Patent: US 8,343,207 B2
• Time in Patent Office: Days
• US Class Current: 623/1.130
• CPC Class Codes: A61F 2/0063 Implantable repair or support meshes, e.g. hernia meshes
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2250/0028 differing in fibre orientations
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: D04B 21/20 specially adapted for knitting articles of particular configuration
• CPC Class Codes: D04C 1/06 Braid or lace serving particular purposes
• CPC Class Codes: D10B 2403/0333 with tubular portions of variable diameter or distinct axial orientation
• CPC Class Codes: D10B 2509/06 Vascular grafts; stents

Abstract

An implantable composite medical device having a longitudinal length a woven textile portion having yarns interlaced in a woven pattern, a knitted textile portion having yarns interlooped in a knitted pattern. The woven and knitted portions are securably attached to one and the other to provide a composite woven and knitted textile surface along the longitudinal length of the device. The woven portion may have a permeability from about 30 to about 500 ml/min/cm², and the knitted portion may have a permeability from about 30 to about 15,000 ml/min/cm². Further, a crimped woven portion with a resiliently longitudinal stretchability from about 10 to about 100 linear percent over its quiescent longitudinal dimension or an uncrimped woven portion with a resiliently longitudinal stretchability of less than about 10 linear percent over its quiescent longitudinal dimension are useful. A knitted portion with a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension is also useful.

Claims

1-47. -47. (canceled)

48. A stent/graft prosthesis comprising

a seamless tubular knitted textile portion having yarns interloped in a knitted pattern defining a cylindrical knitted textile wall having opposed first and second open ends;

a first seamless tubular woven textile portion having yarns interlaced in a woven pattern defining a cylindrical woven textile wall having opposed open ends;

an attachment means for securing said first open end of said first woven textile portion to said first open end of said knitted textile portion;

a second seamless tubular woven textile portion having yarns interlaced in a woven pattern defining a cylindrical woven textile wall having opposed open ends, wherein said second woven textile portion is securably attached by said attachment means to said second open end of said knitted textile portion;

a generally tubular stent having openings in its wall structure and having opposed first and second stent open ends, wherein said stent is circumferentially disposed about interior portions of said knitted textile and said woven textile walls; and

a second attachment means for securing said stent about interior portions of said knitted textile and said woven textile walls.

49. The prosthesis of claim 48, wherein said woven portions have a permeability from about 30 to about 500 ml/mn/cm² of water at a pressure of 120 mm of mercury and said knitted portion has a permeability from about 30 to about 15,000 ml/min/cm² of water at a pressure of 120 mm of mercury.

50. The prosthesis of claim 48, wherein said woven portions have a resiliently longitudinal stretchability from about 10 to about 100 linear percent over its quiescent longitudinal dimension and said knitted portion has a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension.

51. The prosthesis of claim 48, wherein said woven portions have a resiliently longitudinal stretchability of less than about 10 linear percent of its quiescent longitudinal dimension, and said knitted portion has a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension.

52. The prosthesis of claim 48, further comprising a polymeric tube or layer circumferentially disposed and securably attached by said second attachment means about interior portions of said woven and said knitted textile walls.

53. The prosthesis of claim 48, wherein said stent is a radially distensible stent.

54. A stent/graft prosthesis comprising;

a generally tubular stent having openings in its wall structure and having opposed first and second stent open ends, wherein a diameter of said first stent open end is different from a diameter of said second stent open end thereby defining a transitional stent portion therebetween stent portions proximal to said first and said second stent open ends;

a seamless tubular woven textile portion having yarns interlaced in a woven pattern defining a cylindrical woven textile wall having an interior surface, an exterior surface and opposed open ends;

attachment means for securing said woven textile portion to interior and/or exterior portions of said transitional stent portion; and

first and second seamless tubular knitted textile portions having yarns interloped in a knitted pattern defining cylindrical knitted textile walls having interior surfaces, exterior surfaces and opposed open ends, wherein said first knitted textile portion is securably attached by said attachment means to interior and/or exterior portions of said stent portion proximal to said first stent open end and said second knitted textile portion is securably attached by said attachment means to interior and/or exterior portions of said stent portion proximal to said second stent open end said.

55. The prosthesis of claim 54, wherein said woven portion has a permeability from about 30 to about 500 ml/mn/cm² of water at a pressure of 120 mm of mercury and said knitted portions have a permeability from about 30 to about 15,000 ml/min/cm² of water at a pressure of 120 mm of mercury.

56. The prosthesis of claim 54, wherein said woven portion has a resiliently longitudinal stretchability from about 10 to about 100 linear percent over its quiescent longitudinal dimension and said knitted portions have a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension.

57. The prosthesis of claim 54, wherein said woven portion has a resiliently longitudinal stretchability of less than about 10 linear percent of its quiescent longitudinal dimension, and said knitted portions have a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension.

58. The prosthesis of claim 54, further comprising a polymeric tube or layer circumferentially disposed about interior and/or exterior portions of said prosthesis;

and

second attachment means for securing said polymeric tube or layer about said interior and/or said exterior portions of said prosthesis.

59. The prosthesis of claim 54, further comprising a third attachment means for securing said knitted textile portions to said woven portion.

60. A bifurcated stent/graft prosthesis comprising:

a generally tubular main stent having openings in its wall structure and having opposed first and second stent open ends;

a seamless tubular woven textile portion having yarns interlaced in a woven pattern defining a cylindrical woven textile wall having an interior surface, an exterior surface and opposed open ends;

attachment means for securing said woven textile portion to interior and/or exterior portions of said first stent; and

first and second seamless tubular knitted textile portions having yarns interloped in a knitted pattern defining cylindrical knitted textile walls having interior surfaces, exterior surfaces and opposed open ends, wherein said first and said second knitted textile portions are securable attached to one of said open ends of said woven portion to define a bifurcated structure; and

generally tubular first and second stents having openings in its wall structure and having opposed first and second stent open ends, wherein said first and second knitted textile portions are securably attached to interior and/or exterior portions of said first and said second stents, respectively.

61. The prosthesis of claim 60, wherein said woven portion has a permeability from about 30 to about 500 ml/min/cm² of water at a pressure of 120 mm of mercury and said knitted portions have a permeability from about 30 to about 15,000 ml/min/cm² of water at a pressure of 120 mm of mercury.

62. The prosthesis of claim 60, wherein said woven portion has a resiliently longitudinal stretchability from about 10 to about 100 linear percent over its quiescent longitudinal dimension and said knitted portions have a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension.

63. The prosthesis of claim 60, wherein said woven portion has a resiliently longitudinal stretchability of less than about 10 linear percent of its quiescent longitudinal dimension and said knitted portions have a resiliently longitudinal stretchability from about 5 to about 200 linear percent over its quiescent longitudinal dimension.

64. The prosthesis of claim 60, wherein said first and said second stents are self-expanding stents.

65. The prosthesis of claim 64, wherein said first and said second stents are braided stents.

66. The prosthesis of claim 60, wherein said main stent is a balloon-expandable stent.

67. The prosthesis of claim 60, further comprising a polymeric tube or layer circumferentially disposed about interior and/or exterior portions of said prosthesis;

and

second attachment means for securing said polymeric tube or layer about said interior and/or said exterior portions of said prosthesis.

68. The prosthesis of claim 60, further comprising a third attachment means for securing said knitted textile portions to said woven portion.