Balloon bifurcated lumen treatment

• US 8,936,567 B2
• Filed: 06/05/2009
• Issued: 01/20/2015
• Est. Priority Date: 11/14/2007
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Noddin, Richard, Quillin, Dan, Horn, Daniel J., Goodin, Richard, Tran, The Thomas Trinh, Alkhatib, Yousef F., Hoff, Steve, Dunn, Richard, Holman, Thomas, Xiong, Ying, Tegels, Zach
• Primary Examiner(s): Vu, Quynh-Nhu H
• Assistant Examiner(s): Zhang, Jenna
• Application Number:
  US12/479,611
• Publication Number:
  US 20100114018A1
• Time in Patent Office: 2,055 Days
• Field of Search: 60410101-10105, 60410306-10314, 604/916, 604/919, 264/514, 264/519, 264/523, 264/540, 264/DIG.33, 264/303, 264/527, 425528-534, 425/577
• US Class Current: 604/103.06
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2250/0036 differing in thickness
• CPC Class Codes: A61M 25/1027 Making of balloon catheters

Abstract

Balloon systems for treating bifurcated lumens include desirable burst and folding characteristics. In some cases, the balloon systems can be formed by varying the wall thickness of a balloon parison.

Claims

1. A method of forming a balloon for treating a bifurcated lumen, the method comprising:

providing a tubular parison defining an axis and having a variable wall thickness region;

utilizing the variable wall thickness region of the tubular parison to form a balloon inflatable off the axis; and

expanding the tubular parison to form the balloon such that a first region of the tubular parison having a greater thickness is expanded to a greater extent than a second region of the tubular parison having a lesser thickness, and in an expanded state the first region has a lesser thickness than the second region.

2. The method of claim 1 further comprising:

forming the balloon by expanding the tubular parison in a mold shaped to correspond to a balloon inflatable off of the axis; and

orienting the tubular parison in the mold such that the first region of the tubular parison having a greater wall thickness is expanded to a greater extent than the second region of the tubular parison having a lesser thickness.

3. The method of claim 1 further comprising forming a predefined burst region in the balloon, wherein the predefined burst region is a localized zone in which the balloon wall thickness is reduced.

4. The method of claim 1 further comprising forming a predefined folding region in the balloon, wherein the predefined folding region is a zone of increased flexibility.