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US 12,653,541 B2Granted
Catheter with improved flow characteristics
AssigneeMicroVention, Inc.
InventorsGeorge Stern, Vladimir Satchouk
Life of this patent
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Abstract
Catheters are described that have improved flow characteristics that may be particularly helpful when delivering embolic agents within a blood vessel. One catheter includes a fluid flow modifier that is configured to create laminar fluid flow out of a distal end of the catheter to help reduce turbulence and achieve predictable fluid movement. Another catheter includes scavenging ports that are configured to suction in embolic agents that have refluxed proximally back from a distal end of the catheter.
Claims15
A catheter, comprising:
- a catheter shaft;
- a delivery lumen within the catheter shaft;
- and,
- a fluid flow modifying structure within a distal portion of the delivery lumen comprising a central lumen and a plurality of outer lumens, wherein at least one of the plurality of outer lumens is substantially centrally located between an outer edge of the catheter shaft and an outer circumference of the central lumen;
- wherein the fluid flow modifying structure comprises a first tapered surface and a second tapered surface, the first tapered surface increasing in diameter in a distal direction, and the second tapered surface decreasing in diameter in the distal direction;
- and,
- wherein the first tapered surface is proximal to the second tapered surface.
4 more elements
A catheter, comprising:
- a catheter shaft;
- a delivery lumen within the catheter shaft;
- and,
- a fluid flow modifying structure within a distal portion of the delivery lumen comprising a central lumen and a plurality of outer lumens;
- wherein each of the delivery lumen and the central lumen comprise a uniform diameter, wherein the delivery lumen and the central lumen are concentric, wherein both the delivery lumen and the central lumen are radially enclosed within the catheter shaft, and wherein a diameter of the central lumen is less than a diameter of the delivery lumen;
- wherein the plurality of outer lumens are each positioned between an outer circumference of the central lumen and an outer edge of the catheter shaft;
- wherein at least part of a length of the plurality of outer lumens form longitudinal channels that connect to the central lumen;
- and,
- wherein the plurality of outer lumens are each radially inset with respect to the outer edge of the catheter shaft.
6 more elements
A catheter, comprising:
- a catheter shaft;
- a delivery lumen within the catheter shaft;
- and,
- a fluid flow modifying structure within a distal portion of the delivery lumen comprising a central lumen and a plurality of outer lumens;
- and
- wherein the fluid flow modifying structure comprises a first tapered surface and a second tapered surface, the first tapered surface increasing in diameter in a distal direction, and the second tapered surface decreasing in diameter in the distal direction;
- wherein the first tapered surface is proximal to the second tapered surface;
- and,
- wherein the plurality of outer lumens extend distally from the second tapered surface.
6 more elements
Dependencies are inferred from the claim text.