US 2017/0000518 A1 · COAXIAL CONTRA-ROTATING CUTTING ASSEMBLY

Abstract

The invention generally relates to intraluminal procedures, and, more particularly, to a contra-rotating cutting assembly for use with an atherectomy device to remove occlusive material from an occluded lumen, such as a blood vessel or other body lumen. The contra-rotating cutting assembly includes a rotatable housing having a distal end, an opposing proximal end and a lumen extending between the distal and proximal ends. The housing is configured to rotate about a longitudinal axis in a first direction. The cutting assembly further includes a rotatable cutter head positioned within at least a portion of the lumen of the housing and in coaxial alignment with the housing. The cutter head is configured to rotate about the longitudinal axis in a second direction opposite the first direction.

Claims24

Dependent claims

A contra-rotatable cutting assembly for cutting occlusive material from within a body lumen, said cutting assembly comprising:

a rotatable housing having a distal end, an opposing proximal end and a lumen extending between the distal and proximal ends, said housing configured to rotate about a longitudinal axis in a first direction;
and
a rotatable cutter head positioned within at least a portion of the lumen of said housing and in coaxial alignment with said housing, said cutter head configured to rotate about said longitudinal axis in a second direction opposite the first direction.

A device for cutting and removing occlusive material from within a body lumen, said device comprising:

a catheter body having a distal end, a proximal end and a lumen extending there between, said catheter body sized and configured for axial advancement within a body lumen;
a torque shaft positioned within at least a portion of the lumen of the catheter and coupled to a rotating mechanism;
and
a contra-rotatable cutting assembly positioned at said distal end of said catheter body and coupled to said torque shaft to receive rotational energy therefrom, said cutting assembly comprising:
a rotatable housing having a distal end, an opposing proximal end and a lumen extending between the distal and proximal ends, said housing configured to rotate about a longitudinal axis in a first direction;
a rotatable cutter head positioned within at least a portion of the lumen of said housing and in coaxial alignment with said housing, said cutter head configured to rotate about said longitudinal axis in a second direction opposite the first direction;
and
a contra-rotation gear assembly positioned within said housing and configured to drive rotation of at least said housing in response to rotation of said torque shaft and cutter head.

5 more elements

Dependencies are inferred from the claim text.

Coaxial contra-rotating cutting assembly

Life of this patent

Coaxial contra-rotating cutting assembly

Life of this patent

Abstract

Claims24