Intravenous Filter with Guidewire and Catheter Access Guide

摘要

A vascular filter system and method are disclosed. In one embodiment, the filter system comprises a dispensing needle, a guidewire and a catheter releasably attached to a filter dispenser which stores a length of filter wire. The filter wire dispenser has a guide tube which guides the filter wire into the catheter and then into a vein during surgical implantation. The filter wire is configured to form into a predetermined shape as it is deployed from the needle. The shape of the filter wire captures blood clots in the blood stream. The filter wire may be configured with a perforated section and a non-perforated section. Perforations are in fluid communication with an inner hollow lumen in the filter wire.

主权项

1. A vascular filter formed of filter wire comprising:
a filter portion formed at a distal end of the filter wire, the filter portion comprising residual stresses, surface tensions, or both that form the filter portion into a vascular filter when deployed within a blood vessel; a spring portion formed on the filter wire proximally from the filter portion, the spring portion comprising residual stresses, surface tensions, or both that form the spring portion into a wave shape or helix shape when deployed within the blood vessel.