Flow assisted catheter
AssigneeSciMed Life Systems, Inc.
InventorsTodd J. Mortier, James R. Pray, Robert M. Vidlund, David A. Kusz, Cyril J. Schweich, Jr.
Life of this patent
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Abstract
A catheter includes a manifold and a proximal shaft portion coupled to the manifold. A distal shaft portion is coupled to a distal end of the proximal shaft portion and is flexible relative to the proximal shaft portion. A fiber reinforcement layer is disposed about the distal shaft portion.
Claims28
A catheter, comprising:
- a manifold;
- a proximal shaft portion coupled to the manifold;
- a distal shaft portion coupled to a distal end of the proximal shaft portion and being flexible relative to the proximal shaft portion;
- and
- a fiber braid disposed about the distal shaft portion wherein the fiber braid includes a plurality of fibers disposed on the distal shaft portion and crossing over one another to form pics and wherein the fiber braid is formed to have approximately 70-120 pics per inch.
A catheter including an elongate member having a lumen extending between a proximal end and a distal end of the elongate member, the elongate member comprising:
- a proximal shaft portion;
- a distal shaft portion coupled to the proximal shaft portion;
- and
- a reinforcement layer coupled to the distal shaft portion;
- wherein the distal shaft portion, when coupled to the reinforcement layer, has an elastic modulus (E) and a shear modulus (G), and wherein a ratio of G/E is in excess of 0.25.
A medical tube including an elongate member having a lumen extending between a proximal end and a distal end of the elongate member, the elongate member comprising:
- a proximal shaft portion;
- a distal shaft portion coupled to the proximal shaft portion;
- and
- a reinforcement layer coupled to the distal shaft portion;
- wherein the distal shaft portion, when coupled to the reinforcement layer, has a burst pressure and a flexibility and wherein a ratio of the burst pressure to the flexibility is greater than approximately 60,000.
A flow assisted catheter, guidable by fluid flow within a vessel, the catheter comprising:
- a proximal shaft portion;
- and
- a distal shaft portion coupled to the proximal shaft portion;
- wherein the distal shaft portion is flexible enough to be guided by the fluid flow, and defines an inner lumen having a diameter of greater than 0.015 inches.
Dependencies are inferred from the claim text.