Embolic filter device independent of treatment device

摘要

A self-expanding filter for collecting emboli or thrombi in a vessel of a patient is disclosed. The filter has a tubular filter body that coils or spirals around an outer surface of an adjacently located, independent treatment device in a corkscrew fashion when deployed from a sheath delivery catheter. When fully deployed, an outer surface of the coiled tubular body conforms to the inner wall of the vessel and an inner surface of the coiled tubular body conforms to an outer surface of the treatment device. The treatment device is disposed within a longitudinal opening extending through the expanded, coiled tubular body of the filter during an interventional procedure.

主权项

1. A device for collecting embolic debris in a vessel in a patient, comprising:
a self-expanding filter having a tubular body that includes openings therein for receiving the embolic debris there through and for allowing perfusion, the tubular body having a generally circular cross-section and an interior surface that defines an interior volume for collecting the embolic debris,
wherein when the filter is in a delivery configuration the tubular body is substantially cylindrical andwherein when the filter is in a deployed configuration the tubular body coils to form a series of one or more loops for collecting the embolic debris within respective interior volumes thereof,
whereby the generally circular cross-section of the tubular body is maintained in each loop such that a portion of the interior volume of the tubular body defines the respective interior volume of each loop thereof, and such that an outermost surface of the one or more loops defines an abluminal surface of the coiled tubular body having an expanded outer diameter for conforming to an inner wall of the vessel and an innermost surface of the one or more loops defines an adluminal surface of the coiled tubular body defining a longitudinal opening through the filter.