Multi-section coaxial angioplasty catheter
First Claim
1. A dilatation catheter comprising:
- an inner tube including a proximal inner tube section formed from a thin wall polymer tube and a distal inner tube section formed from a thin wall polymer tube connected together at an inner tube bonding region and having a guide wire lumen extending therethrough, with the distal inner tube section being more flexible than the proximal inner tube section;
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 proximal outer tube section formed from a thin wall metal tube and a distal outer tube section formed from a thin wall polymer tube connected together at an outer tube bonding region which is spaced distally from the inner tube bonding region, with the distal outer tube section being more flexible than the proximal outer tube section; and
a balloon having a proximal portion connected to a distal end of the distal outer tube section and having a distal portion connected to a distal end of the distal inner tube section.
2 Assignments
0 Petitions
Accused Products
Abstract
An over-the-wire balloon catheter for use in angioplasty includes a dual lumen shaft formed by a multi-section outer tube with a multi-section inner tube coaxially aligned therein. The outer tube includes a proximal hypotube outer tube section which is connected to a manifold at its proximal end. The outer tube also includes a distal high density polyethylene outer tube section which is attached to the distal end of the proximal outer tube section at an outer tube bonding region. The inner tube has a proximal polyimide inner tube section which extends generally coaxially through the proximal outer tube section. The inner tube also includes a distal high density polyethylene inner tube section which is attached to the distal end of the first inner tube section at an inner tube bonding region. The inner tube bonding region is spaced proximally from the outer tube bonding region, and a balloon is attached to the distal ends of the outer and inner tubes.
350 Citations
23 Claims
-
1. A dilatation catheter comprising:
-
an inner tube including a proximal inner tube section formed from a thin wall polymer tube and a distal inner tube section formed from a thin wall polymer tube connected together at an inner tube bonding region and having a guide wire lumen extending therethrough, with the distal inner tube section being more flexible than the proximal inner tube section; 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 proximal outer tube section formed from a thin wall metal tube and a distal outer tube section formed from a thin wall polymer tube connected together at an outer tube bonding region which is spaced distally from the inner tube bonding region, with the distal outer tube section being more flexible than the proximal outer tube section; and a balloon having a proximal portion connected to a distal end of the distal outer tube section and having a distal portion connected to a distal end of the distal inner 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)
-
Specification