Variable distention angioplasty balloon assembly
First Claim
1. A variable distention angioplasty balloon assembly, for insertion into a blood vessel, comprising:
- an inner elongated, inflatable balloon having a distal portion, a proximal portion and an intermediate portion therebetween and defining therein a first chamber, said inner balloon having a first Young'"'"'s modulus;
an outer elongated, inflatable balloon having a distal portion, a proximal portion and an intermediate portion therebetween positioned around said inner balloon and defining between the balloons a second chamber, said outer balloon having a second Young'"'"'s modulus, said inner balloon being substantially enclosed by said outer balloon, and said first Young'"'"'s modulus of the inner balloon is less than the second Young'"'"'s modulus of the outer balloon; and
said first chamber of said inner balloon and said second chamber of said outer balloon define a variable dilation structure for dilating an anatomical stricture, said dilation structure with variable characteristics having a first diameter and pressure characteristic curve defined by a first rate of radial expansion dependent upon the Young'"'"'s modulus of said inner balloon and a second diameter and pressure characteristic curve defined by a second rate of radial expansion dependent upon the combined Young'"'"'s modulus of said inner balloon and said outer balloon.
1 Assignment
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Accused Products
Abstract
The variable distention angioplasty balloon assembly, for insertion into a blood vessel, comprises an inner elongated, inflatable balloon having a distal portion, a proximal portion and an intermediate portion therebetween and defining therein a first chamber. The inner balloon has a first Young'"'"'s modulus. The outer elongated, inflatable balloon has a distal portion, a proximal portion and an intermediate portion therebetween positioned around the inner balloon and defines between the balloons a second chamber. The outer balloon has a second Young'"'"'s modulus. The inner balloon is substantially enclosed by the outer balloon, and the first Young'"'"'s modulus of the inner balloon is less than the second Young'"'"'s modulus of the outer balloon. The first chamber of the inner balloon and the second chamber of the outer balloon define a variable dilation structure for dilating an anatomical stricture. The dilation structure with variable characteristics has a first diameter and pressure characteristic curve defined by a first rate of radial expansion dependent on the Young'"'"'s modulus of the inner balloon and a second diameter and pressure characteristic curve defined a second rate of radial expansion dependent upon the combined Young'"'"'s modulus of the inner balloon and the outer balloon.
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Citations
17 Claims
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1. A variable distention angioplasty balloon assembly, for insertion into a blood vessel, comprising:
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an inner elongated, inflatable balloon having a distal portion, a proximal portion and an intermediate portion therebetween and defining therein a first chamber, said inner balloon having a first Young'"'"'s modulus; an outer elongated, inflatable balloon having a distal portion, a proximal portion and an intermediate portion therebetween positioned around said inner balloon and defining between the balloons a second chamber, said outer balloon having a second Young'"'"'s modulus, said inner balloon being substantially enclosed by said outer balloon, and said first Young'"'"'s modulus of the inner balloon is less than the second Young'"'"'s modulus of the outer balloon; and said first chamber of said inner balloon and said second chamber of said outer balloon define a variable dilation structure for dilating an anatomical stricture, said dilation structure with variable characteristics having a first diameter and pressure characteristic curve defined by a first rate of radial expansion dependent upon the Young'"'"'s modulus of said inner balloon and a second diameter and pressure characteristic curve defined by a second rate of radial expansion dependent upon the combined Young'"'"'s modulus of said inner balloon and said outer balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification