Catheter shaft constructions having contrast fluid lumen
AssigneeBoston Scientific Scimed, Inc.
InventorAJAY GUPTA
Life of this patent
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Abstract
A balloon catheter including a dedicated contrast fluid lumen is disclosed. The contrast fluid lumen extends through the catheter shaft to a contrast fluid delivery port located proximate the inflatable balloon and is configured to deliver contrast fluid to a target location. The catheter shaft includes a joint located proximate the contrast fluid port formed between a distal end of a proximal outer tubular member, a distal end of an inner tubular member and a proximal end of a distal outer tubular member. A guidewire tube, defining a guidewire lumen, may extend through the lumen of the proximal and distal outer tubular members.
Claims19
A catheter comprising:
- a hub assembly;
- a catheter shaft extending distally from the hub assembly to a distal end;
- an inflatable balloon mounted proximate the distal end of the catheter shaft;
- an inflation lumen extending through the catheter shaft from the hub assembly to the inflatable balloon;
- a guidewire lumen extending through at least a portion of the catheter shaft;
- and
- a contrast fluid lumen extending through the catheter shaft to a contrast fluid delivery port located proximate the inflatable balloon, the contrast fluid lumen configured to deliver contrast fluid to a target location;
- wherein the catheter shaft includes an outer tubular member having a lumen extending therethrough, and a guidewire tube extending through the lumen of the outer tubular member;
- wherein the inflation lumen is defined between an inner surface of the outer tubular member and an outer surface of the guidewire tube;
- and
- wherein the guidewire lumen is defined by the guidewire tube.
A catheter comprising:
- a hub assembly;
- a catheter shaft extending distally from the hub assembly, the catheter shaft including a proximal outer tubular member, a distal outer tubular member, an inner tubular member extending through the proximal outer tubular member, and a guidewire tube extending through the distal outer tubular member;
- a therapeutic device mounted on a distal end region of the catheter shaft;
- and
- a contrast fluid delivery port located on the catheter shaft proximal of the therapeutic device for delivering a contrast fluid to a target location;
- wherein a distal end of the proximal outer tubular member, a proximal end of the distal outer tubular member and a distal end of the inner tubular member are bonded together at a joint;
- wherein the contrast fluid delivery port is located proximate the joint.
A method of constructing a medical catheter, comprising:
- bonding an end of a proximal outer tubular member, an end of a distal outer tubular member and an end of an inner tubular member together at a joint such that a lumen of the proximal outer tubular member is in communication with a lumen of the distal outer tubular member;
- forming a port at the joint in communication with a lumen of the inner tubular member;
- and
- positioning a guidewire tube across the joint such that a first portion of the guidewire tube is positioned within the lumen of the proximal outer tubular member and a second portion of the guidewire tube is positioned within the lumen of the distal outer tubular member.
The method of claim 18, further comprising:
- bonding a proximal waist of an inflatable balloon to the distal outer tubular member;
- and
- bonding a distal waist of the inflatable balloon to the guidewire tube.
The method of claim 19, wherein a space between an exterior surface of the guidewire tube and an interior surface of the proximal and distal outer tubular members defines an inflation lumen in communication with the inflatable balloon.
Dependencies are inferred from the claim text.