MEDICAL DEVICE RETRIEVAL SYSTEM AND METHOD

摘要

A retrieval system for a medical device includes an access sheath, a clot catch with an attached mesh, and a filter catch having an attached retrieval member. The filter catch is translatable within clot catch, and the clot catch is translatable within the access sheath. The mesh is expandable into engagement with a body vessel during retrieval of the medical device. The mesh captures emboli that are dislodged during retrieval of the device. The device is captured by the clot catch during retrieval, and the clot catch is subsequently captured by the access sheath. The system can further include an inner sheath translatable within the clot catch, with the inner sheath capturing the medical device and the clot catch capturing the inner sheath.

主权项

1. A system for retrieving a medical device from within a body lumen, the system comprising:
an access sheath having proximal and distal ends, corresponding proximal and distal openings, and a lumen extending therebetween and defining a longitudinal axis; an intermediate tube having proximal and distal ends, corresponding proximal and distal openings, and a lumen extending therebetween, wherein the intermediate tube is disposed at least partially within the access sheath lumen and movable longitudinally relative to the access sheath; a first mesh member coupled to the intermediate tube and being biased radially outward to define a concave shape with a concavity facing the distal direction; and a retrieval device having an elongate shape and having proximal and distal ends, and a retrieval member coupled thereto, wherein the retrieval device is disposed at least partially within the lumen of the intermediate tube and moveable longitudinally relative to the intermediate tube; wherein the system includes a delivery configuration with the retrieval member and the distal end of the intermediate tube being disposed proximally of the distal opening of the access sheath; and wherein the system includes a retrieval configuration with the retrieval member disposed distally of the distal opening of the intermediate tube, the first mesh member disposed distally of the distal opening of the access tube and expanded radially outward to define the concave shape.