NON-COMPLIANT MULTILAYERED BALLOON FOR A CATHETER

摘要

Multilayer balloon for a catheter includes at least a first layer, a second layer, and a third layer having a combined wall thickness. The first layer is made of a first polymer material having a first maximum blow-up-ratio. The second layer made of a second polymer material having a second maximum blow-up-ratio greater than the first maximum blow-up-ratio, and the second layer is an inner layer relative to the first layer. The third layer is made of a third polymer material having a third maximum blow-up-ratio greater than the second maximum blow-up-ratio, and the third layer is an inner layer relative to the second layer. The at least first, second, and third layers define a compliance less than that of a single layer balloon made of the first polymer material with a wall thickness equal to the combined wall thickness. Method of making of multilayer balloon is also provided.

主权项

1. A multilayer balloon for a catheter comprising:
at least a first layer, a second layer, and a third layer having a combined wall thickness; the first layer made of a first polymer material having a first maximum blow-up-ratio; the second layer made of a second polymer material having a second maximum blow-up-ratio greater than the first maximum blow-up-ratio, wherein the second layer is an inner layer relative to the first layer; the third layer made of a third polymer material having a third maximum blow-up-ratio greater than the second maximum blow-up-ratio, wherein the third layer is an inner layer relative to the second layer; the at least first, second, and third layers defining a compliance less than that of a single layer balloon made of the first polymer material with a wall thickness equal to the combined wall thickness; and wherein the multilayer balloon has a nominal working diameter corresponding to an inner mold diameter used to form the balloon and at least the third layer is substantially at the third maximum blow-up-ratio when the multilayer balloon is substantially at the nominal working diameter.