Co-extruded medical balloon
View Patent ↗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 ( 20 A, 20 B) at least one of which is a base structural layer ( 20 B) and the other of which ( 20 A) is formed of polyethylene and copolymers thereof or of SELAR. The base structural layer is thicker than the other layer.
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.