Low profile occlusion catheter
First Claim
Patent Images
1. An occlusion catheter system comprising:
- a first catheter member having a first lumen extending longitudinally through the first catheter member and a first opening at a distal end of the first catheter member;
a second catheter member having a second lumen extending longitudinally through the second catheter member and a second opening at a distal end of the second catheter member, the second catheter member is positioned over and in spaced apart relationship relative to a proximal section of the first catheter member forming an annular space between the second catheter member and the first catheter member and defining an annular port at the distal end of the second catheter member, the proximal section of the first catheter member resides within the second lumen of the second catheter member and the first catheter member extends beyond the distal end of the second catheter member;
a third catheter member having a third lumen extending longitudinally through the third catheter member, the third catheter member is positioned over a distal section of the first catheter member, the third catheter member having a distal section that extends distally from a distal end of the first catheter member such that the first lumen and the third lumen are in fluid flow communication, whereby the second and third catheter members are spaced apart from each other along a longitudinal axis of the first catheter member with the first catheter member extending there between;
an atraumatic tip member having a proximal section co-axially coupled proximate to a distal end of the third catheter member; and
a separate expandable occlusion member coupled to the second catheter member near the distal end of the second catheter member and to the third catheter member near a proximal end of the third catheter member, the expandable occlusion member being positioned such that a space between the distal end of the second catheter member and the proximal end of the third catheter member is within the expandable occlusion member, wherein the distal end of the first catheter member extends into the third catheter member beyond the expandable occlusion member, and wherein the first catheter member defines a stiffness greater than a stiffness of the second catheter member and greater than a stiffness of the third catheter member, thereby defining a backbone of the catheter system, lending column strength to carry the second catheter member and the third catheter member.
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Abstract
A low profile occlusion catheter having a guiding atraumatic tip that prevents entry of the balloon into collateral vessels. The occlusion catheter system is particularly well suited for use in vascular occlusion and includes a pressure monitoring line to monitor the degree and state of occlusion.
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Citations
20 Claims
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1. An occlusion catheter system comprising:
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a first catheter member having a first lumen extending longitudinally through the first catheter member and a first opening at a distal end of the first catheter member; a second catheter member having a second lumen extending longitudinally through the second catheter member and a second opening at a distal end of the second catheter member, the second catheter member is positioned over and in spaced apart relationship relative to a proximal section of the first catheter member forming an annular space between the second catheter member and the first catheter member and defining an annular port at the distal end of the second catheter member, the proximal section of the first catheter member resides within the second lumen of the second catheter member and the first catheter member extends beyond the distal end of the second catheter member; a third catheter member having a third lumen extending longitudinally through the third catheter member, the third catheter member is positioned over a distal section of the first catheter member, the third catheter member having a distal section that extends distally from a distal end of the first catheter member such that the first lumen and the third lumen are in fluid flow communication, whereby the second and third catheter members are spaced apart from each other along a longitudinal axis of the first catheter member with the first catheter member extending there between; an atraumatic tip member having a proximal section co-axially coupled proximate to a distal end of the third catheter member; and a separate expandable occlusion member coupled to the second catheter member near the distal end of the second catheter member and to the third catheter member near a proximal end of the third catheter member, the expandable occlusion member being positioned such that a space between the distal end of the second catheter member and the proximal end of the third catheter member is within the expandable occlusion member, wherein the distal end of the first catheter member extends into the third catheter member beyond the expandable occlusion member, and wherein the first catheter member defines a stiffness greater than a stiffness of the second catheter member and greater than a stiffness of the third catheter member, thereby defining a backbone of the catheter system, lending column strength to carry the second catheter member and the third catheter member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification