Patent ID: 8828022

Claim:
A medical instrument, comprising: a proximal handle; a sheath extending from the handle and including a lumen, the sheath including a distal end away from the handle; a retrieval assembly that is movable relative to the sheath to achieve a collapsed position of the retrieval assembly within the lumen and an expanded position of the retrieval assembly outside the lumen, the retrieval assembly including a proximal portion comprising three or more strands having a first rigidity and a distal portion comprising at least one wire having a second rigidity, wherein the three or more strands meet at a proximal-most end of the retrieval assembly, wherein the at least one wire is a single continuous wire that extends from a distal end of one of the strands to a distal end of another one of the strands, and wherein the distal portion of the retrieval assembly forms a pocket and includes an apex positioned at a distal end of the retrieval assembly; and an elongate member having at least a portion formed of extensions of the three or more strands that are braided together, the elongate member extending proximally from the proximal-most end of the retrieval assembly.