Non-shortening wrapped balloon

• US 8,597,566 B2
• Filed: 07/24/2009
• Issued: 12/03/2013
• Est. Priority Date: 08/07/2006
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Eskaros, Sherif, King, David R., McLaughlin, Lonzo C., Newcomb, Kenneth, Roeber, Peter J., Streeter, John, Towler, Jeffrey, Korleski, Joseph E. Jr.
• Primary Examiner(s): HUSON, MONICA ANNE
• Application Number:
  US12/508,695
• Publication Number:
  US 20090283206A1
• Time in Patent Office: 1,593 Days
• Field of Search: None
• US Class Current: 264/521
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61M 2025/1004 Balloons with folds, e.g. folded or multifolded
• CPC Class Codes: A61M 2025/1075 having a balloon composed of several layers, e.g. by coating or embedding
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• 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

Abstract

A non-shortening catheter balloon having a longitudinal axis and an inflatable balloon able to be affixed to a catheter shaft is provided. The balloon has an uninflated length which remains relatively unchanged upon inflation and is formed of least two helically oriented wrapped passes of balloon materials at a balanced force angle. Methods of making this balloon are also provided.

Claims

1. A method of creating a non-shortening balloon with increased burst pressures, said balloon comprising:

a) wrapping a mandrel with at least one first balloon material to form a balloon preform;

b) exposing the first balloon material to heat;

c) removing the mandrel;

d) exposing the balloon preform to internal pressure at a reflow temperature;

e) inflating the balloon preform into a balloon as it is continued to be exposed to said internal pressure at an increased temperature; and

f) removing heat and internal pressure;

wherein upon inflating the balloon preform, said balloon preform foreshortens less than 2 percent.

2. The method of claim 1 wherein the mandrel of step (a) is wrapped with film at a low angle of between 3 and 54 degrees.

3. The method of claim 1 further comprising step (f)(1) inflating the non-shortening balloon and wrapping with a second balloon material pass at a high angle of between 54 and 90 degrees.

4. The method of claim 3 further comprising step (f)(2) passing heat to bond said second balloon pass to the inflated balloon.

5. The method of claim 1 wherein the heat and pressure are added and the balloon is inflated into a mold.

6. The method of claim 1 wherein the heat and pressure are added and the balloon is inflated without a mold.

7. The method of claim 3 wherein the second balloon material is cigarette wrapped.

8. The method of claim 3 wherein the second balloon material is helically wrapped.

9. A method of creating a non-shortening catheter balloon with increased burst pressures, comprising:

a) wrapping a wire core with a plurality of first balloon material layer at a low angle;

b) further wrapping with a plurality of first balloon material at a low angle in the opposite direction of a) relative to the longitudinal balloon axis;

c) exposing the plurality of first balloon material layers to heat to bond them together creating a preform;

d) removing the wire core;

e) placing the balloon preform in a mold and exposing the balloon preform to internal pressure;

f) inflating the balloon preform as it is continued to be exposed to said internal pressure creating a balloon;

g) removing the balloon from the mold;

h) wrapping the inflated balloon with second balloon material layers oriented at an angle between 54 and 90 degrees; and

i) bonding the first and second balloon material

wherein upon inflating the balloon preform, said balloon preform foreshortens less than 2 percent.

10. The method of claim 9 wherein the second balloon material is isotropic.

11. The method of claim 9 wherein the second balloon material is anisotropic.

12. The method of claim 9 where heat is used to bond said second balloon material to first balloon material.

13. The method of claim 9 wherein the first balloon material is an isotropic.