Intravascular filter and method

摘要

A filter disposed at the distal end of an elongate guidewire. Catheters are provided for delivering the filter to, and retrieving the filter from, a treatment site. The catheters can be over-the-wire or single operator exchange. The catheters include a housing for receiving the filter therein. The housing has an atraumatic distal end.

主权项

1. A filter assembly comprising:
a catheter having a proximal section and a distal section, the distal section including a housing having an elastomeric distally tapered portion disposed about a distal end thereof; an elongated shaft disposed within a lumen of the catheter, the elongated shaft having a proximal section and a distal section including an atraumatic tip; and a filter fixedly coupled to the distal section of the elongated shaft, the filter including a filter frame actuatable between a collapsed position and an expanded position and a filter membrane disposed on a distal portion of the filter frame; wherein the elastomeric distally tapered portion of the housing provides an atraumatic profile for advancement of the housing and the filter to a treatment site.