RETRIEVAL OF MEDICAL DEVICES

摘要

A medical device retrieval system can include an elongate core member and an expandable member coupled to a distal portion of the elongate core member. The expandable member can move between collapsed and expanded states. The expandable member has an exterior having barbs positioned therealong. The expandable member can be expanded to contact and engage a portion of a medical device positioned within the vasculature of a patient in order to retrieve and remove the medical device therefrom. When the expandable member moves to the collapsed state, it can move the medical device from a higher profile configuration to a lower profile configuration to facilitate retrieval.

主权项

1. A medical device retrieval system, comprising:
an elongate core member comprising a distal portion; an expandable member coupled to the distal portion, expandable member being movable between collapsed and expanded states to cause an exterior of the expandable member to contact an inner surface of a medical device when the expandable member is radially expanded within the medical device; and a plurality of extensible members coupled to the exterior of the expandable member, the extensible members being movable to engage the medical device when the expandable member moves to the expanded state, the extensible members being configured to exert a collapsing force on the medical device when (i) the extensible members are engaged with the medical device and (ii) the expandable member is moved to the collapsed state to thereby reduce an outer profile of the medical device and facilitate recapturing the medical device.