Balloon catheter device

• US 20050273152A1
• Filed: 07/15/2005
• Published: 12/08/2005
• Est. Priority Date: 09/18/1995
• Status: Abandoned Application

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Laguna, Alvaro J., Campbell, Carey V., Spencer, Mark S.
• Application Number:
  US11/182,874
• Publication Number:
  US 20050273152A1
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61L 29/041 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61L 29/12 Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
• CPC Class Codes: A61L 29/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61M 2025/1075 having a balloon composed of several layers, e.g. by coating or embedding
• CPC Class Codes: A61M 2025/1081 having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths
• CPC Class Codes: A61M 25/0014 Connecting a tube to a hub
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1029 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
• CPC Class Codes: A61M 25/1034 Joining of shaft and balloon
• CPC Class Codes: C08L 27/12 containing fluorine atoms
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: Y10T 428/1334 Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/1359 Three or more layers [continuous layer]

Abstract

Balloon catheters having the strength and maximum inflated diameter characteristics of an angioplasty balloon and having the recovery characteristics during deflation of an elastic embolectomy balloon. The balloon catheter can be made in very small sizes and has a lubricious and chemically inert outer surface. The balloon catheter is easy to navigate through tortuous passageways, is capable of rapid inflation and deflation and has high burst strengths. Balloon covers having these same characteristics are also described for use with conventional embolectomy balloons or angioplasty balloons.

Claims

1-69. -69. (canceled)

70. A balloon catheter comprising:

a) a catheter shaft having a longitudinal axis with a proximal end and a distal end, said catheter shaft having an inflation lumen extending within at least a portion of a distal shaft section; and

b) a balloon comprising a material having a microstructure of interconnected fibrils, said balloon having a longitudinal axis, said material oriented helically with respect to said longitudinal axis, wherein the balloon is mounted on the distal section of the catheter shaft with an interior chamber in fluid communication with the inflation lumen;

c) said balloon further comprising an elastomeric material.

71. The balloon catheter according to claim 70 wherein the balloon has substantially uniform radial expansion.

72. The balloon catheter according to claim 71 wherein the balloon has an initial deflated diameter and a maximum inflated diameter, and wherein the balloon is capable of being inflated to its maximum diameter and then deflated to substantially its initial deflated diameter.

73. The balloon catheter according to claim 70 wherein the material having a microstructure of interconnected fibrils comprises polytetrafluoroethylene.

74. The balloon catheter according to claim 70 wherein the material having a microstructure of interconnected fibrils comprises expanded polytetrafluoroethylene.

75. The balloon catheter according to claim 70 wherein the elastomeric material comprises latex.

76. The balloon catheter according to claim 70 wherein the elastomeric material comprises silicone.

77. The balloon catheter according to claim 70 wherein the elastomeric material comprises polyurethane.

78. The balloon catheter according to claim 73 wherein the elastomeric material comprises latex.

79. The balloon catheter according to claim 73 wherein the elastomeric material comprises silicone.

80. The balloon catheter according to claim 73 wherein the elastomeric material comprises polyurethane.

81. The balloon catheter according to claim 74 wherein the elastomeric material comprises latex.

82. The balloon catheter according to claim 74 wherein the elastomeric material comprises silicone.

83. The balloon catheter according to claim 74 wherein the elastomeric material comprises polyurethane.

84. The balloon catheter according to claim 70 wherein the balloon has a radial compliance of at least about 0.06 millimeters/atmospheres at inflation pressures of about 8 to about 15 atmospheres.

85. The balloon catheter according to claim 73 wherein the balloon has a radial compliance of at least about 0.06 millimeters/atmospheres at inflation pressures of about 8 to about 15 atmospheres.

86. The balloon catheter according to claim 74 wherein the balloon has a radial compliance of at least about 0.06 millimeters/atmospheres at inflation pressures of about 8 to about 15 atmospheres.

87. The balloon catheter according to claim 70 wherein the material having a microstructure of interconnected fibrils is porous and contains void spaces, said void spaces being substantially sealed by the elastomeric material.

88. The balloon catheter according to claim 73 wherein the material having a microstructure of interconnected fibrils is porous and contains void spaces, said void spaces being substantially sealed by the elastomeric material.

89. The balloon catheter according to claim 74 wherein the material having a microstructure of interconnected fibrils is porous and contains void spaces, said void spaces being substantially sealed by the elastomeric material.

90. The balloon catheter according to claim 70 wherein the material having a microstructure of interconnected fibrils is porous, wherein at least a portion of the elastomeric material is impregnated into said material having a microstructure of interconnected fibrils.

91. The balloon catheter according to claim 73 wherein the material having a microstructure of interconnected fibrils is porous, wherein at least a portion of the elastomeric material is impregnated into said material having a microstructure of interconnected fibrils.

92. The balloon catheter according to claim 74 wherein the material having a microstructure of interconnected fibrils is porous, wherein at least a portion of the elastomeric material is impregnated into said material having a microstructure of interconnected fibrils.

93. The balloon catheter according to claim 70 further comprising an expandable stent disposed about and mounted onto the balloon.

94. The balloon catheter according to claim 71 further comprising an expandable stent disposed about and mounted onto the balloon.

95. The balloon catheter according to claim 72 further comprising an expandable stent disposed about and mounted onto the balloon.

96. The balloon catheter according to claim 73 further comprising an expandable stent disposed about and mounted onto the balloon.

97. The balloon catheter according to claim 74 further comprising an expandable stent disposed about and mounted onto the balloon.

98. The balloon catheter according to claim 75 further comprising an expandable stent disposed about and mounted onto the balloon.

99. The balloon catheter according to claim 76 further comprising an expandable stent disposed about and mounted onto the balloon.

100. The balloon catheter according to claim 77 further comprising an expandable stent disposed about and mounted onto the balloon.

101. The balloon catheter according to claim 78 further comprising an expandable stent disposed about and mounted onto the balloon.

102. The balloon catheter according to claim 79 further comprising an expandable stent disposed about and mounted onto the balloon.

103. The balloon catheter according to claim 80 further comprising an expandable stent disposed about and mounted onto the balloon.

104. The balloon catheter according to claim 81 further comprising an expandable stent disposed about and mounted onto the balloon.

105. The balloon catheter according to claim 82 further comprising an expandable stent disposed about and mounted onto the balloon.

106. The balloon catheter according to claim 83 further comprising an expandable stent disposed about and mounted onto the balloon.

107. The balloon catheter according to claim 84 further comprising an expandable stent disposed about and mounted onto the balloon.

108. The balloon catheter according to claim 85 further comprising an expandable stent disposed about and mounted onto the balloon.

109. The balloon catheter according to claim 86 further comprising an expandable stent disposed about and mounted onto the balloon.

110. The balloon catheter according to claim 87 further comprising an expandable stent disposed about and mounted onto the balloon.

111. The balloon catheter according to claim 88 further comprising an expandable stent disposed about and mounted onto the balloon.

112. The balloon catheter according to claim 89 further comprising an expandable stent disposed about and mounted onto the balloon.

113. The balloon catheter according to claim 90 further comprising an expandable stent disposed about and mounted onto the balloon.

114. The balloon catheter according to claim 91 further comprising an expandable stent disposed about and mounted onto the balloon.

115. The balloon catheter according to claim 92 further comprising an expandable stent disposed about and mounted onto the balloon.