Patent ID: 9668741
Date: 2017-06-06
CPC Classifications: A61B,A61M

Claim:
1. A catheter, comprising: an elongate member having proximal and distal ends and proximal and distal regions; at least a first expandable member mounted on the distal region of the elongate member, the first expandable member being inflatable with fluid through at least one lumen in the elongate member to cause the first expandable member to expand from an empty configuration to an expanded configuration, the first expandable member being disposed on the elongate member in first tension such that the first expandable member is pre-loaded with tensile stress in the empty configuration; at least a second expandable member mounted on the distal region of the elongate member, the second expandable member being inflatable with fluid through at least one lumen in the elongate member to cause the second expandable member to expand from an empty configuration to an expanded configuration, the second expandable member being disposed on the elongate member in second tension such that the second expandable member is pre-loaded with tensile stress in the empty configuration, the first and second tensions being different from each other.