James L. Goepfrich,Joshua C. Haarer,Brandon C. Hedberg,Benjamin M. Trapp
申请号：
US16352419
公开号：
US20190209739A1
申请日:
2019.03.13
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A balloon or balloon cover comprising a composite material having a least one expanded fluoropolymer material and an elastomer is provided. The expanded fluoropolymer material can contain serpentine fibrils. In exemplary embodiments, the fluoropolymer is polytetrafluoroethylene. The composite material may be axially, helically, and/or circumferentially wrapped to form a balloon or balloon cover. The balloon or balloon cover exhibits a sharp increase in stiffness at a predetermined diameter. The balloon or balloon cover can be designed to have a stop point in either a radial or axial direction.
