Catheter having a funnel-shaped occlusion balloon of uniform thickness and methods of manufacture
OwnerHung Vo, Rainier Beteliainventors
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Abstract
Methods and apparatus are provided for removing emboli during an angioplasty, stenting or surgical procedure comprising a catheter having a funnel-shaped occlusion balloon of uniform thickness disposed on a distal end of the catheter. The occlusion balloon is fused to the distal end so that it provides a substantially seamless flow transition into a working lumen of the catheter. Additionally, a distal edge of the occlusion balloon is configured to be in close proximity with an inner wall of a vessel to facilitate blood flow into the catheter and efficiently remove emboli.
Claims20
Apparatus for removing emboli from a vessel during an interventional procedure, the apparatus comprising:
- a catheter having proximal and distal ends, a working lumen extending therethrough;
- and
- an occlusion balloon having a distal end affixed to an interior surface of the working lumen and a proximal end everted to surround, and affixed to, a portion of the catheter proximal of the distal end of the catheter disposed on the distal end of the catheter, the occlusion balloon having a contracted state suitable for insertion into a vessel and a deployed state configured to occlude antegrade flow in the vessel,
- wherein the occlusion balloon comprises a wall having a substantially uniform thickness along its length, and in the deployed state, provides a funnel-shaped transition into the working lumen.
A method of manufacturing an emboli catheter for use in an interventional procedure, the method comprising:
- providing a catheter having an exterior surface, proximal and distal ends and a working lumen extending therethrough having an interior surface;
- providing an occlusion balloon having first and second ends and a uniform thickness therebetween;
- affixing a first end of the occlusion balloon to the interior surface of the working lumen;
- everting the second end of the occlusion balloon over the distal end of the catheter so that the second end is disposed surrounding the catheter at a position proximal of the distal end;
- and
- affixing the second end of the occlusion balloon to the exterior surface of the catheter at the location proximal of the distal end.
Dependencies are inferred from the claim text.