Comformable balloon devices and methods

Patent metadata

Field	Value
Publication number	US-2017319829-A1
Application number	US-201715660316-A
Country	US
Kind code	A1
Filing date	Jul 26, 2017
Priority date	Mar 14, 2013
Publication date	Nov 9, 2017
Grant date	—

Abstract

The present disclosure is directed toward a semi-compliant to non-compliant, conformable balloon useful in medical applications. Conformable balloons of the present disclosure exhibit a low straightening force when in a curved configuration and at inflation pressures greater than 4 atm. Balloons of the present disclosure are constructed of material that can compress along an inner length when the balloon is in a curved configuration. In further embodiments, balloons of the present disclosure can be constructed of material that sufficiently elongates along an outer arc when the balloon is in a curved configuration. As a result, medical balloons, in accordance with the present disclosure, when inflated in a curved configuration, exhibit kink-free configurations and do not cause a significant degree of vessel straightening.

First claim

What is claimed is:

1 . A medical balloon comprising:
a balloon wall comprising a porous material; a nominal diameter of between about 9 mm to about 12 mm and a working pressure range that spans a nominal inflation pressure to a rated burst pressure, wherein the medical balloon exhibits less than a 3N increase in mean straightening force when inflated across the working pressure range while in a curved configuration requiring 16% total strain.

2 . The medical balloon of claim 1 , wherein the balloon exhibits a mean straightening force less than 10N at the rated burst pressure while in the curved configuration requiring 16% total strain.

3 . The medical balloon of claim 1 , wherein the medical balloon remains kink-free when inflated in the curved configuration.

4 . The medical balloon of claim 1 , wherein polymeric material comprises expanded polytretrafluoroethylene (ePTFE).

5 . The medical balloon of claim 1 , wherein the balloon exhibits a mean straightening force less than 10N at a pressure of 8 atm while in the curved configuration requiring 16% total strain.

6 . The medical balloon of claim 1 , wherein the nominal inflation pressure is greater than 4 atm.

7 . The medical balloon of claim 1 , wherein the mean straightening force is determined with a 3-point bend fixture.

8 . A medical balloon comprising:
a balloon wall comprising a porous material; a nominal diameter of between about 9 mm to about 12 mm and a working pressure range that spans a nominal inflation pressure to a rated burst pressure, wherein the medical balloon exhibits less than a 10N mean straightening force when inflated across the working pressure range while in a curved configuration requiring 16% total strain.

9 . The medical balloon of claim 8 , wherein the working pressure range for the medical balloon is between about 5 atm and about 8 atm.

10 . The medical balloon of claim 8 , wherein the medical balloon exhibits a mean straightening force less than 10N at the rated burst pressure while in a curved configuration requiring 16% total strain.

11 . The medical balloon of claim 8 , wherein the mean straightening force is determined with a 3-point bend fixture.

12 . The medical balloon of claim 8 , wherein the medical balloon remains kink-free when inflated in the curved configuration requiring 16% total strain.

13 . The medical balloon of claim 8 , wherein the medical balloon exhibits less than an 8N mean straightening force when inflated up to a pressure of 8 atm while in a curved configuration requiring 16% total strain.

14 . The medical balloon of claim 8 , wherein the nominal inflation pressure is less than 6 atm.

15 . A medical balloon comprising:
a balloon wall comprising a porous material, a nominal diameter of between about 13 mm to about 14 mm and a working pressure range that spans a nominal inflation pressure to a rated burst pressure, wherein the medical balloon exhibits less than a 12N mean straightening force when inflated across the working pressure range while in a curved configuration requiring 16% total strain.

16 . The medical balloon of claim 15 , wherein the balloon exhibits less than an 11N mean straightening force when inflated up to a pressure of 8 atm while in a curved configuration requiring 16% total strain.

17 . The medical balloon of claim 15 , wherein the medical balloon remains kink-free when inflated in the curved configuration.

18 . The medical balloon of claim 15 , wherein porous material comprises ePTFE.

19 . The medical balloon of claim 15 , wherein the nominal inflation pressure is less than 6 atm.

20 . The medical balloon of claim 15 , wherein the mean straightening force is determined with a 3-point bend fixture.

Assignees

• Gore & Ass

Inventors

• Campbell Carey V
• Maulding Matthew E
• Trapp Benjamin M

Classifications

• A61M2025/105

  having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes · CPC title

• A61F2/958

  Inflatable balloons for placing stents or stent-grafts · CPC title

• A61M25/104 Primary

  used for angioplasty · CPC title

• A61M25/1002

  characterised by balloon shape (A61M25/1006, A61M25/1009 take precedence) · CPC title

• A61M25/1027

  Making of balloon catheters · CPC title