Inflatable structure with braided layer

Patent metadata

Field	Value
Publication number	US-10143577-B2
Application number	US-201615262767-A
Country	US
Kind code	B2
Filing date	Sep 12, 2016
Priority date	Oct 12, 2006
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

A balloon for medical treatments such as percutaneous transluminal coronary angioplasty (PTCA), delivery of a vascular stents or stent grafts, employs reinforcement materials that are patterned so as to promote consistent folding of the balloon. Methods and apparatus for biocidal treatment using such a balloon, including balloons with fiber fabric reinforcements.

First claim

The invention claimed is:

1. A foldable composite balloon, comprising:
a body with a polymer matrix and a plurality of filaments attached thereto;
the body having first and second portions and a folding line lying within the second portions;
the plurality of filaments being configured to promote folding along the folding line either by being configured to:
cause the body to be stiffer in the first portions, at least in a direction perpendicular to the folding line, than in the second portions; or
generate a mechanical bias that favors folding along the folding line rather than the first portion, the bias resulting from tension in the plurality of filaments from the body being formed over a form with edges thereon.

2. A balloon as in claim 1 , wherein the plurality of filaments is configured to cause the body to be stiffer in the first portions, at least in a direction perpendicular to the folding lines, than the second portions.

3. A balloon as in claim 1 , wherein the plurality of filaments includes a braid.

4. A balloon as in claim 1 , wherein the plurality of filaments has first and second filaments and compression elements, the first portions being stiffer, at least in a direction perpendicular to the folding lines, at least in part as a result of the first and second filaments of the first portions being arranged with the compression elements between them, thereby defining opposing tension elements separated by the compression elements.

5. A balloon as in claim 4 , wherein the first and second filaments define a braid.

6. A balloon as in claim 4 , wherein the plurality of filaments includes a braid with layers, the braid having more layers in the first portions than in the second portions such that the first portions are stiffer than the second portions.

7. A balloon as in claim 1 , wherein the body has a longitudinal axis and the folding lines are parallel to the longitudinal axis.

8. A balloon as in claim 1 , wherein the body has a longitudinal axis and the folding lines wind helically around a longitudinal axis.

9. A balloon as in claim 1 , wherein the plurality of filaments includes one of a triaxial and biaxial braid.

Assignees

• Bard Inc C R

Inventors

• Simpson Charles L

Classifications

• A61P31/00

  Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics · CPC title

• A61P31/04

  Antibacterial agents · CPC title

• A61M25/104

  used for angioplasty · CPC title

• A61F2/958 Primary

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

• A61M2025/1084

  having features for increasing the shape stability, the reproducibility or for limiting expansion, e.g. containments, wrapped around fibres, yarns or strands · CPC title