APPARATUS AND METHODS FOR ACCESSING AND REMOVING MATERIAL FROM BODY LUMENS

摘要

An apparatus and method are provided for accessing and/or removing material from a body lumen. The apparatus includes a tubular sheath including a shaft having a proximal end and an expandable distal end that is expandable between a collapsed configuration and an expanded, tapered configuration. A treatment member can be introduced into the body lumen through the tubular sheath. The treatment member includes one or more expandable members to interact with the material to be removed from the body lumen.

主权项

1. A method for treating a body lumen, the method comprising:
introducing a flow restoration apparatus into a body lumen, the flow restoration apparatus comprising an outer member defining a first lumen, and an inner member disposed within the first lumen of the outer member; expanding a distal end of the outer member from a collapsed configuration to a tapered, expanded configuration, such that a diameter of a distal opening of the outer member is substantially equal to an inner diameter of the body lumen; withdrawing the inner member from the first lumen of the outer member, thereby leaving the outer member in the expanded configuration disposed within the body lumen; introducing a treatment member through the first lumen of the outer member and into the body lumen such that material within the body lumen is positioned between a distal end of the treatment member and the expanded distal end of the outer member; expanding a first expandable member on the treatment member distal end; and withdrawing the treatment member into the first lumen of the outer member such that the material in the body lumen that is positioned between the outer member expanded distal end and the expanded first expandable member is also withdrawn into the first lumen of the outer member.