Catheter guidance through a calcified aortic valve

• US 8,133,213 B2
• Filed: 10/18/2007
• Issued: 03/13/2012
• Est. Priority Date: 10/19/2006
• Status: Active Grant

• Current Assignee: Speyside Medical, LLC
• Original Assignee: Direct Flow Medical, Inc.
• Inventors: Lashinski, Randall T.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): Bosworth, Kami A
• Application Number:
  US11/874,825
• Publication Number:
  US 20080200898A1
• Time in Patent Office: 1,608 Days
• Field of Search: 604507-510, 604/96.01, 604104-107, 604/108, 604/109, 606/191, 606/192, 606/194, 606/198, 623/1.11, 623/1.12, 623/2.11, 128/898
• US Class Current: 604/509
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2445 Annuloplasty rings in direct contact with the valve annulus
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61M 2025/1047 having centering means, e.g. balloons having an appropriate shape
• CPC Class Codes: A61M 2029/025 characterised by the guiding element
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: A61M 29/00 Dilators with or without means for introducing media, e.g. remedies instruments for performing visual medical inspections of cavities or tubes of the body A61B1/00
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

A method of treating a patient with a calcified aortic valve includes introducing a guide wire into a blood vessel. The guide wire is advanced through the aorta and the aortic valve. A balloon dilatation catheter is introduced into the blood vessel over the guide wire. The balloon dilatation catheter includes an elongate body, a distal portion, a guide wire lumen, an inflation lumen, and a dilatation balloon. The balloon dilatation catheter further includes at least one deflection wire lumen, and at least one deflection wire residing in the at least one deflection wire lumen and having a distal end attached to the distal portion. The balloon dilatation catheter is advanced over the guide wire through the aorta. The deflection wire is pushed towards the distal portion so that the deflection wire bows outward. The balloon dilatation catheter is advanced through the aortic valve, and the dilatation balloon is inflated.

Claims

1. A method of treating a patient with a calcified aortic valve, the method comprising:

introducing a guide wire into a blood vessel;

advancing the guide wire through the aorta to the aortic valve;

advancing the guide wire through the aortic valve;

introducing a balloon dilatation catheter into the blood vessel over the guide wire, the balloon dilatation catheter comprising an elongate body, a distal portion, a guide wire lumen, an inflation lumen, a dilatation balloon, at least one deflection wire lumen, the at least one deflection wire lumen having a distal opening proximal the distal portion, at least one deflection wire residing in the at least one deflection wire lumen and having a distal end attached to the distal portion;

advancing the balloon dilatation catheter over the guide wire through the aorta;

pushing the deflection wire towards the distal portion so that the deflection wire bows outward without inflating the dilatation balloon;

advancing the balloon dilatation catheter with a bowed outward deflection wire through the aortic valve; and

inflating the dilatation balloon.

2. The method of treating a patient of claim 1, wherein the at least one deflection wire has an oblong cross-sectional area.

3. The method of treating a patient of claim 2, wherein the at least one deflection wire has a generally rectangular cross-sectional area.

4. The method of treating a patient of claim 2, wherein the at least one deflection wire has a generally elliptical cross-sectional area.

5. The method of treating a patient of claim 1, wherein the at least one deflection wire comprises a plurality of deflection wires spaced approximately evenly around the periphery of the catheter.