Angioplasty catheter
First Claim
1. A dilatation catheter comprising:
- an inner tube including a first inner tube section and a second inner tube section connected together and having a guide wire lumen extending therethrough, the second inner tube section extending distally from the first inner tube section and having an outer diameter which is less than the outer diameter of the first inner tube section, the first and second inner tube sections having wall thicknesses less than about 0.002 inches and having a lubricious material on their inner surfaces;
an outer tube positioned over the inner tube to define an inflation lumen between the inner tube and the outer tube, the outer tube having a first outer tube section having a wall thickness of less than about 0.002 inches and a second outer tube section positioned distally of the first outer tube section having a wall thickness of less than about 0.003 inches, the second outer tube section having greater flexibility than and made of material different than material of the first outer tube section; and
a balloon having a proximal portion connected to a distal end of the second outer tube section and a distal portion connected to a distal end of the second inner tube section, the balloon being made of material different than material of the second outer tube section.
1 Assignment
0 Petitions
Accused Products
Abstract
An over-the-wire balloon catheter for use in angioplasty includes a dual lumen shaft formed by a multisection outer tube and a multisection inner tube. The outer tube includes a first thin wall outer tube section which is connected to a manifold at its proximal end. The outer tube also includes a second outer tube section which is attached to the distal end of the first outer tube section and which has a greater flexibility. The inner tube has a first thin wall inner tube section which extends generally coaxially through the first outer tube section and into the interior of the second outer tube section. The inner tube also includes a second thin wall inner tube section which is attached to the distal end of the first inner tube section and extends distally beyond the distal end of the outer tube. A balloon is attached to the distal ends of the outer and inner tubes. The inner tube sections have a coating of a low friction material, such as polyimide-polytetrafluoroethylene composite, on their inner walls to facilitate movement of a guide wire through the guide wire lumen of the inner tube.
-
Citations
43 Claims
-
1. A dilatation catheter comprising:
-
an inner tube including a first inner tube section and a second inner tube section connected together and having a guide wire lumen extending therethrough, the second inner tube section extending distally from the first inner tube section and having an outer diameter which is less than the outer diameter of the first inner tube section, the first and second inner tube sections having wall thicknesses less than about 0.002 inches and having a lubricious material on their inner surfaces; an outer tube positioned over the inner tube to define an inflation lumen between the inner tube and the outer tube, the outer tube having a first outer tube section having a wall thickness of less than about 0.002 inches and a second outer tube section positioned distally of the first outer tube section having a wall thickness of less than about 0.003 inches, the second outer tube section having greater flexibility than and made of material different than material of the first outer tube section; and a balloon having a proximal portion connected to a distal end of the second outer tube section and a distal portion connected to a distal end of the second inner tube section, the balloon being made of material different than material of the second outer tube section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
-
32. A dilatation catheter comprising:
-
a first outer tube having a wall thickness of less than about 0.002 inches; a first inner tube extending through the first outer tube, the first inner tube having a wall thickness of less than about 0.002 inches; a second outer tube having proximal and distal ends, having greater flexibility than and made of material different than material of the first outer tube, and having its proximal end connected to a distal end of the first outer tube; a second inner tube having proximal and distal ends, having a wall thickness of less than about 0.002 inches, and having an outer diameter which is less than an outer diameter of the first inner tube, the proximal end of the second inner tube being connected to a distal end of the first inner tube; and a balloon having a proximal portion connected to the distal end of the second outer tube and a distal portion connected to the distal end of the second inner tube, the balloon being made of material different than material of the second outer tube. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
-
Specification