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US 7,842,056 B2Granted
Cutting member for bifurcation catheter assembly
AssigneeBoston Scientific Scimed, Inc.
InventorsThomas J. Holman, Jan Weber
Life of this patent
Estimating the term…
Abstract
A catheter assembly for deployment in a vessel includes a catheter shaft extending from a proximal end portion to a distal end portion. A balloon is operatively coupled to the distal end portion of the catheter shaft. At least one cutting member is coupled to the catheter assembly. As the balloon is inflated, the cutting member is moved to a position to cut a portion of the vessel.
Claims4
A catheter assembly for deployment in a vessel, the assembly comprising:
- a catheter shaft extending from a proximal end portion to a distal end portion;
- a balloon operatively coupled to the distal end portion of the catheter shaft;
- a sheath positioned about the balloon, the sheath including at least one cutting member coupled thereto, wherein, as the balloon is inflated, the cutting member is moved to a position to cut a portion of the vessel;
- wherein the cutting member defines a first cutting portion and a second cutting portion, the second cutting portion being configured to pivot relative to the first cutting portion to cut a wall of a bifurcated vessel;
- wherein the first cutting portion is coupled to the sheath, and the second cutting portion is coupled to the first cutting portion;
- and
- wherein the sheath defines an aperture, and wherein the second cutting portion is positioned to extend over the aperture such that, as the balloon is inflated, the balloon is configured to extend through the aperture and pivot the second cutting portion relative to the first cutting portion.
4 more elements
A method for forming a catheter assembly for deployment in a bifurcated vessel, the method comprising:
- providing a catheter shaft extending from a proximal end portion to a distal end portion;
- coupling a balloon to the distal end portion of the catheter shaft;
- surrounding the balloon with a tubular sheath;
- defining an aperture in the tubular sheath through which the balloon extends upon inflation;
- positioning a cutting member relative to the balloon, wherein the cutting member is coupled to an outer surface of the tubular sheath;
- and
- inflating the balloon to move the cutting member towards a wall of a blood vessel to cut the wall;
- wherein positioning the cutting member further comprises positioning a cutting portion of the cutting member to extend over the aperture so that the balloon contacts and rotates the cutting portion upon inflation.
5 more elements
Dependencies are inferred from the claim text.