Catheter having improved bonding region
First Claim
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1. A method of making catheter shaft comprising:
- forming an orifice in a portion of a first tube including an inflation lumen defined by an inside wall surface in fluid contact with a dilation balloon, an outside wall surface, wherein the first tube is formed of a first material;
inserting a second tube through the orifice in the first tube to extend distally from the orifice inside the inflation lumen, the second tube having a proximal end, a distal end, and comprising an inner layer of lubricious material, an outer layer, and an intervening intermediate layer, the second tube having a length and a lumen therethrough, the inner layer of lubricious material defining an inner wall surface, the outer layer defining an outer wall surface, and a bonding region;
bonding the outside wall surface of the second tube to the inside wall surface of the first tube within the bonding region; and
bonding the outside wall surface of the second tube to the outside wall surface of the first tube within the bonding region.
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Abstract
A method of making a catheter having a flexible outer tube and a lubricious inner tube bonded to the flexible outer tube. The catheter is formed of a distal outer tube formed of a first, flexible material, an inner tube having a lubricious inside wall surface formed of a second, lubricious material, and an outer tube wall surface compatible with heat bonding the inner tube outside wall surface to the outer tube wall surfaces. A preferred flexible material is polyether block amide (PEBA) and a preferred lubricious material is polyethylene.
211 Citations
11 Claims
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1. A method of making catheter shaft comprising:
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forming an orifice in a portion of a first tube including an inflation lumen defined by an inside wall surface in fluid contact with a dilation balloon, an outside wall surface, wherein the first tube is formed of a first material; inserting a second tube through the orifice in the first tube to extend distally from the orifice inside the inflation lumen, the second tube having a proximal end, a distal end, and comprising an inner layer of lubricious material, an outer layer, and an intervening intermediate layer, the second tube having a length and a lumen therethrough, the inner layer of lubricious material defining an inner wall surface, the outer layer defining an outer wall surface, and a bonding region; bonding the outside wall surface of the second tube to the inside wall surface of the first tube within the bonding region; and bonding the outside wall surface of the second tube to the outside wall surface of the first tube within the bonding region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification