Catheter balloon systems and methods

• US 7,344,557 B2
• Filed: 11/10/2004
• Issued: 03/18/2008
• Est. Priority Date: 11/12/2003
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Advanced Stent Technologies Inc. (Boston Scientific Corporation)
• Inventors: Yadin, Amnon
• Primary Examiner(s): Dawson; Glenn K.
• Assistant Examiner(s): SONNETT, KATHLEEN C
• Application Number:
  US10/985,005
• Publication Number:
  US 20050102019A1
• Time in Patent Office: 1,224 Days
• Field of Search: 623/1.11, 623/1.27, 623/1.28, 623/1.35, 623/1.29, 604/103.01, 604/103.05, 604/103.14, 604/103.06, 604/103.07, 604/103.08
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• 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 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91583 by a bridge, whereby at least one of its ends is connected along the length of a strut between two consecutive apices within a band
• CPC Class Codes: A61F 2250/0015 differing in density or specific weight
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61M 2025/1045 for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations
• CPC Class Codes: A61M 2025/1056 having guide wire lumens outside the main shaft, i.e. the guide wire lumen is within or on the surface of the balloon
• CPC Class Codes: A61M 2025/1059 : having different inflatable sections mainly depending on the response to the inflation pressure, e.g. due to different material properties with different compartments A61M2025/1072
• CPC Class Codes: A61M 2025/1068 : having means for varying the length or diameter of the deployed balloon, this variations could be caused by excess pressure
• CPC Class Codes: A61M 2025/1086 : having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 25/1002 : characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 25/1011 : Multiple balloon catheters

Abstract

Apparatus and method are provided for treatment of a bifurcation of a body lumen. The apparatus includes an elongated catheter body having a proximal end and a distal end. A balloon is associated with the distal end of the balloon catheter. The balloon includes a main vessel balloon for treating a main vessel of the bifurcation, and a branch vessel balloon for treating a branch vessel of the bifurcation. The branch vessel balloon includes an accordion configuration capable of being expanded from an unexpanded collapsed accordion configuration to an expanded accordion configuration extending into the branch vessel.

Claims

1. A catheter assembly for use in bifurcated vessels, comprising:

an elongated catheter body having a proximal end and a distal end; and

a balloon arrangement associated with the distal end of the balloon catheter, the balloon arrangement including a main vessel balloon for treating a main vessel of the bifurcation, and a branch vessel balloon for treating a branch vessel of the bifurcation,

wherein the branch vessel balloon comprises a plurality of fluidly connected cells connected in series, the series defining an axis of primary inflation; and

wherein when the branch vessel balloon is expanded, expansion along the axis of primary inflation is greater than expansion in a radial direction, which is substantially perpendicular to the axis of primary inflation.

2. The catheter assembly of claim 1, wherein successive cells have a different size from the preceding cell in the series.

3. The catheter assembly of claim 1, wherein the cells are adapted to merge into a substantially tubular structure when fully expanded.