Medical devices for treating a target site and associated method

摘要

Embodiments of the present invention provide devices and methods for treating various target sites, such as vascular abnormalities. For example, a medical device according to one embodiment includes at least one layer of a fabric of braided strands having proximal and distal ends and a central axis extending therebetween. The medical device has an expanded configuration a generally frustroconical shaped portion at each end. The medical device is configured to be constrained to a reduced configuration for delivery through a diagnostic catheter and to at least partially return, when unconstrained, towards the expanded configuration.

主权项

1. A medical device comprising:
at least one layer of a fabric of braided strands, having proximal and distal ends and a central axis extending therebetween, the medical device having an expanded preset configuration comprising a generally frustoconical shaped portion at each end, wherein, in the expanded preset configuration, each frustoconical shaped portion comprises first and second ends and a conical portion disposed therebetween, wherein the first ends are generally planar and face one another and have a larger cross-sectional diameter than the second ends, wherein the second ends correspond to the proximal and distal ends of the medical device, wherein at least one of the generally frustoconical shaped portions comprises a cylindrical portion extending from adjacent to the planar first end and connecting to the conical portion, wherein the medical device is configured to be constrained to a reduced configuration for delivery through a diagnostic catheter, and wherein the medical device is biased towards the expanded preset configuration such that the medical device is configured to self expand and at least partially return, when unconstrained, towards the expanded preset configuration.