Patent ID: 6221006
Filing Date: 2001-04-24
Classification: A61B

Abstract:
A device for removal of material from a body, comprising:an elongate shaft for insertion into a body, said shaft having a distal end;an expandable channel mechanism on the distal end of said shaft, said expandable channel mechanism having a radially compressed state for insertion into the body and a radially expanded state extending near to the diameter of the material to be removed near the distal end of said shaft;a support wire that fits through said shaft, said wire having a distal end; anda material trap element supported on said distal end of said wire, said trap element having a radially compressed state for insertion of said wire into the body and through or around whatever material is to be engaged and a radially expanded state to engage the material;wherein at least a portion of said expanded trap element is positionable distally of the material to be removed and at least one of said expandable channel mechanism and said expanded trap element may be subsequently moved towards the other to entrap said material to be removed;wherein said expandable channel mechanism is an annular braided segment, and said trap element is a multi-wing malecot style mechanism, the multi-wing malecot mechanism comprising;a tubular member having a distal end; andat least two longitudinal slitted sections formed circumferentially on the tubular member, wherein the slitted sections are splayed radially in the expanded state to define wings.