Patent ID: 9649490
Date: 2017-05-16
CPC Classifications: A61B,A61N

Claim:
1. A tip engageable with an elongated sheath for extracting an implanted structure from an obstruction in a body vessel of a patient, the elongated sheath having a distal end and a passageway extending at least substantially therethrough, the tip comprising: a tip body having a proximal portion, a distal portion, a distal end having a substantially flat axial leading face extending circumferentially therearound, a chamfered inner circumferential edge extending inwardly and proximally from the axial leading face, and a passageway extending therethrough, said tip body proximal portion engageable with said sheath distal end, said respective passageways dimensioned and aligned such that the implanted structure is receivable therein, said tip body distal portion comprising a plurality of sides disposed around a circumference thereof, each of said sides comprising a pair of radially outwardly directed ends and an inwardly directed radiused portion between said ends, wherein each of said ends defines a unitary axial sharp edge configured to engage and separate an implanted structure from an obstruction in a body vessel of a patient, said unitary axial sharp edge extending parallel to a longitudinal axis of said tip body, and wherein each of said radiused portions comprises a continuous curvilinear concave surface that intersects a pair of adjacent axial sharp edges, and wherein said tip is configured to rotate about and relative to the implanted structure.