Balloon Catheter With Elastomeric Sheath and Methods

摘要

Balloon catheters that include a balloon and an elastomeric sheath, each having a surface with a therapeutic agent disposed thereon, along with methods of making and methods of using the disclosed balloon catheters.

主权项

1. A balloon catheter comprising:
an elongated catheter shaft having proximal and distal ends, wherein the catheter shaft defines a longitudinal axis extending between the proximal and distal ends; an inflatable balloon located close to the distal end of the catheter shaft, wherein the balloon comprises a polymeric material having a surface with a first therapeutic agent disposed thereon; and an elastomeric sheath comprising an elastomeric material having a surface with a second therapeutic agent disposed thereon; wherein in a first configuration the inflatable balloon is located within the elastomeric sheath such that expansion of the inflatable balloon to an inflated state expands the elastomeric sheath, and wherein in a second configuration the inflatable balloon is located outside of the elastomeric sheath, and further wherein the balloon and the elastomeric sheath are configured for movement relative to each other along the longitudinal axis between the first configuration and the second configuration when deployed within a body lumen.