US 9,802,025 B2 · Over-the-needle expandable catheter

Abstract

The present disclosure is directed to an over-the-needle (OTN) catheter assembly having an expandable catheter. More specifically, the OTN catheter assembly includes a catheter having an expandable body with a proximal end and a distal end coaxially mounted onto a needle. The body defines a lumen extending from the proximal end to the distal end. Further, the body is expandable between a compressed length and an expanded length. The needle is configured within the lumen of the catheter and has a first length. The first length is longer than the compressed length of the catheter and shorter than the expanded length of the catheter. In addition, the body of the catheter is configured to expand from the compressed length to the expanded length when heat is applied to the catheter such that the distal end of the catheter extends past a distal end of the needle.

Claims17

Dependent claims

An over-the-needle catheter assembly, comprising:

a catheter comprising an expandable body having a proximal end and a distal end, said body defining a lumen extending from said proximal end to said distal end, said body comprising a coil spring constructed of a shape-memory material, said body expandable between a compressed length and an expanded length via said coil spring;
a needle configured within the lumen of the catheter, said needle comprising a first length, said first length being longer than said compressed length of said catheter and shorter than said expanded length of said catheter, wherein a distal end of said coil spring extends past a distal end of said needle when said body is expanded to said expanded length,
wherein said body of said catheter is configured to expand from said compressed length to said expanded length when heat is applied to said coil spring such that said distal end of said body of said catheter expands past said distal end of said needle.

Dependencies are inferred from the claim text.

Over-the-needle expandable catheter

Life of this patent

Over-the-needle expandable catheter

Life of this patent

Abstract

Claims17