High strength low compliance composite balloon for balloon catheters
First Claim
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1. A balloon for securement to a catheter comprising:
- a resiliently elastomeric generally hollow pressure expandable body having a wall thickness of and being expandable under an internally applied minimum working pressure P from an unexpanded diameter DdefL to an expanded diameter DinfL said elastomeric body having a decant modules Esec where ##EQU9## where σ
(ε
infL) is the nominal uniaxial tension in said body as a function of ε
infL and ##EQU10## a substantially non-compliant expandable, constraining structure affixed to said elastomeric body, said constraining structure being formed of fibers having an elongation to break of less than about 10% and a tensile strength greater than about 1 GPa and being selected from the group consisting of aramide, polyethylene, steel, polyester, glass, carbon, ceramics and liquid crystal polymers, said constraining structure limiting expansion of said body to a maximum diameter of DinfL wherein said minimum working pressure P required to expand said body to a diameter no greater than DinfL is defined by the question;
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Abstract
An improved dilation balloon for securement to a catheter. The balloon includes an elastomeric skin having a constraining structure affixed thereto. The constraining structure allows radial expansion between an uninflated diameter DdefL and an inflated diameter DinfL. The minimum inflation pressure can be calculated based on the chosen elastomer DinfL and DdefL.
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Citations
9 Claims
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1. A balloon for securement to a catheter comprising:
a resiliently elastomeric generally hollow pressure expandable body having a wall thickness of and being expandable under an internally applied minimum working pressure P from an unexpanded diameter DdefL to an expanded diameter DinfL said elastomeric body having a decant modules Esec where ##EQU9## where σ
(ε
infL) is the nominal uniaxial tension in said body as a function of ε
infL and ##EQU10## a substantially non-compliant expandable, constraining structure affixed to said elastomeric body, said constraining structure being formed of fibers having an elongation to break of less than about 10% and a tensile strength greater than about 1 GPa and being selected from the group consisting of aramide, polyethylene, steel, polyester, glass, carbon, ceramics and liquid crystal polymers, said constraining structure limiting expansion of said body to a maximum diameter of DinfL wherein said minimum working pressure P required to expand said body to a diameter no greater than DinfL is defined by the question;
##EQU11##- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification