Micro-catheters and methods of their manufacture
AssigneeSt. Jude Medical Cardiovascular Group, Inc.
InventorsTodd Allen Berg, Jon Patrick St. Germain
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Abstract
A micro-catheter including an inner primary liner and a plurality of concatenated tubes is provided. The primary liner extends substantially from the proximal end to the distal end of the catheter. Each of the tubes has a respective inner surface that is fused to the outer surface of the primary liner. For each and every pair of tubes, the outer diameter of the more proximally located tube is equal to or greater than the outer diameter of the more distally located tube. Each of the tubes may have different physical properties and dimensions for making customized micro-catheter profiles.
Claims35
A micro-catheter having a proximal end and a distal end, said micro-catheter comprising:
- a tubular primary liner that substantially extends from said proximal end to said distal end, said primary liner having an inner surface and an outer surface;
- and
- a plurality of concatenated tubes having respective inner surfaces fused to said primary liner outer surface, such each and every pair of said tubes comprises a proximal tube having an outer diameter and a distal tube having an outer diameter that does not exceed said outer diameter of said proximal tube and wherein at least one of said each and every pairs comprises a respective proximal tube and a respective distal tube such that an outer diameter of said respective distal tube is less than an outer diameter of said respective proximal tube.
Dependencies are inferred from the claim text.