BALLOON CATHETER DEVICE

• US 20070061000A1
• Filed: 11/03/2006
• Published: 03/15/2007
• Est. Priority Date: 09/18/1995
• Status: Abandoned Application

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Campbell, Carey, Laguna, Alvaro, Spencer, Mark
• Application Number:
  US11/556,258
• Publication Number:
  US 20070061000A1
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61L 29/041 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61L 29/12 Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
• CPC Class Codes: A61L 29/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61M 2025/1075 having a balloon composed of several layers, e.g. by coating or embedding
• CPC Class Codes: A61M 2025/1081 having sheaths or the like for covering the balloon but not forming a permanent part of the balloon, e.g. retractable, dissolvable or tearable sheaths
• CPC Class Codes: A61M 25/0014 Connecting a tube to a hub
• 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 25/1029 Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
• CPC Class Codes: A61M 25/1034 Joining of shaft and balloon
• CPC Class Codes: C08L 27/12 containing fluorine atoms
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: Y10T 428/1334 Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/1359 Three or more layers [continuous layer]

Abstract

Balloon catheters having the strength and maximum inflated diameter characteristics of an angioplasty balloon and having the recovery characteristics during deflation of an elastic embolectomy balloon. The balloon catheter can be made in very small sizes and has a lubricious and chemically inert outer surface. The balloon catheter is easy to navigate through tortuous passageways, is capable of rapid inflation and deflation and has high burst strengths. Balloon covers having these same characteristics are also described for use with conventional embolectomy balloons or angioplasty balloons.

Claims

1. A balloon catheter comprising a catheter having a distal end and an inflatable balloon affixed to the distal end, said balloon comprising porous polytetrafluoroethylene and an elastomer, said balloon having a length and being configured to deliver a prosthesis, wherein said balloon is resistant to slippage of the prosthesis along the length of the balloon.

2. A balloon catheter according to claim 1 wherein said prosthesis is a graft.

3. A balloon catheter according to claim 1 wherein said prosthesis is a stent.

4. A balloon catheter according to claim 1 wherein said porous polytetrafluoroethylene contains void spaces that are substantially sealed by the elastomer.

5. A balloon catheter according to claim 1 wherein said elastomer is silicone.

6. A balloon catheter according to claim 1 wherein said elastomer is a fluoroelastomer.

7. A balloon catheter according to claim 1 wherein said elastomer is a polyurethane.

8. A balloon catheter according to claim 1 wherein said porous polytetrafluoroethylene is helically wrapped.

9. A balloon catheter according to claim 1 wherein said porous polytetrafluoroethylene is helically wrapped over a porous polytetrafluoroethylene substrate having longitudinally oriented fibrils.