Co-extruded medical balloon

• US 7,585,289 B2
• Filed: 06/22/2005
• Issued: 09/08/2009
• Est. Priority Date: 04/26/1991
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Roberts, George T., Wang, James C., Pederson, Brian A. Sr., Abele, John
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Mehta; Bhisma
• Application Number:
  US11/158,564
• Publication Number:
  US 20050238833A1
• Time in Patent Office: 1,539 Days
• Field of Search: 604/96.01, 604/103, 604/103.06, 606/191, 428/35.7, 428/36.9, 428/36.91, 428/35.2, 428/412, 428/474.7, 428/483
• US Class Current: 604/103.06
• CPC Class Codes: A61B 2017/00783 Valvuloplasty
• CPC Class Codes: A61L 29/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61M 2025/1075 having a balloon composed of several layers, e.g. by coating or embedding
• 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: A61M 25/1038 Wrapping or folding devices for use with balloon catheters
• CPC Class Codes: C08L 67/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence
• CPC Class Codes: Y10T 428/1334 Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/1393 Multilayer [continuous layer]

Abstract

A medical balloon for attachment to a catheter tube, and method of making the balloon. The balloon comprises a plurality of co-extruded and coextensive layers of different polymeric materials (20A, 20B) at least one of which is a base structural layer (20B) and the other of which (20A) is formed of polyethylene and copolymers thereof or of SELAR. The base structural layer is thicker than the other layer.

Claims

1. A medical balloon catheter, comprising:

a tubular catheter body carrying a co-extruded balloon having a first layer and a second layer co-extruded with and directly bonded to and disposed outside of the first layer,

wherein the first layer comprises a polyamide/polycarbonate copolymer or a polyester/polycarbonate copolymer, and the second extruded layer comprises 100% Selar or a blend of Selar and polyethylene terephthalate having 50% Selar.

2. The medical balloon catheter of claim 1, wherein the second layer is an outer layer.

3. The medical balloon catheter of claim 1, wherein the first layer is biaxially oriented.

4. A medical balloon catheter, comprising:

a tubular catheter body carrying a co-extruded inflatable balloon having a first layer and a second layer co-extruded with and bonded to and disposed outside the first layer,

wherein the first layer comprises polyethylene terephthalate and the second layer comprises a blend of polyethylene terephthalate and Selar, wherein the second layer is 50% Selar.

5. The medical balloon catheter of claim 4, wherein the second layer is an outer layer.

6. The medical balloon catheter of claim 4, wherein the first layer is biaxially oriented.

7. A medical balloon catheter, comprising:

a tubular catheter body carrying a co-extruded inflatable balloon having a first layer and a second layer bonded to and disposed outside the first layer,

wherein the first layer comprises polyethylene terephthalate and the second layer comprises 50% Selar.

8. The medical balloon catheter of claim 7, wherein the second layer is an outer layer.

9. The medical balloon catheter of claim 7, wherein the first layer is biaxially oriented.