Patent ID: 9055964
Filing Date: 2015-06-16
Classification: A61B

Abstract:
1. A medical device for removing material from a hollow anatomical structure, comprising: an outer shaft having a distal end and a proximal end, an inner shaft having a distal end and a proximal end, the inner shaft having aspiration holes near the distal end of the inner shaft, a housing having a proximal end and a distal end, the housing being connected near the distal end of the inner shaft, the housing having at least one opening along a side wall of the housing; a macerator element co-axially aligned within the housing, the macerator having a base; a drive shaft having a proximal end and a distal end with the distal end attached to the base of the macerator member; and an expandable member having a proximal end and a distal end, the distal end of the expandable member is attached to the housing, the proximal end of the expandable member is attached near the distal end of the outer shaft, the distal end of the expandable member is moveably attached to the inner shaft at a location proximal to the aspiration holes, and the expandable member is made of a permeable material.