Patent ID: 6398791
Filing Date: 2002-06-04
Classification: A61B,A61M

Abstract:
A device for manipulation of material in a body, comprising:a handle; a sheath extending from the handle and comprising a lumen, a distal end, a proximal portion, a distal portion, and an intermediate portion, the proximal portion being substantially longer than the intermediate portion, the intermediate portion of the sheath being more flexible than the proximal and distal portions of the sheath, the intermediate portion of the sheath comprising a plurality of sections, wherein at least one of the sections comprises a different number of layers than at least one of the other sections; and an object-engaging unit, the object-engaging unit and sheath moveable relative to each other to achieve a collapsed state of the object-engaging unit in which the object-engaging unit is collapsed within the lumen of the distal portion of the sheath and another state in which the object-engaging unit extends from the distal end of the sheath.