Balloons for medical devices and fabrication thereof
First Claim
1. A balloon for a dilatation catheter, the balloon having been made by a process comprising:
- providing a length of tubing made of a nylon material or of a polyamide material, said length of tubing having a predetermined original outer diameter and a predetermined original wall thickness;
biaxially orienting a section of said length of tubing by inflating said section with a pressurized fluid in order to increase the diameter of said section to at least in excess of twice said original outer diameter of the length of tubing while thereby simultaneously biaxially orienting the nylon of polyamide material;
said balloon has a non-distended inflated profile having a predetermined size as well as a distended size that has a radius greater than that of said predetermined non-distended size, and said distended size has an inflated profile larger than that of said non-distended inflated profile; and
said balloon has a tensile strength greater than non-nylon catheter balloons that have an inflated profile exhibiting a distended size.
1 Assignment
0 Petitions
Accused Products
Abstract
Dilatation balloons and catheters including same are provided. The balloons are fabricated of a biaxially orientable material such as a nylon or a polyamide material, and they have an inflated, non-distended working profile as well as a stretched inflated profile which is achieved by applying pressure through a dilatation catheter or the like that is in excess of that needed to achieve the inflated, non-distended profile and which is adequate to effect dilatation or the like up to a maximum pre-bursting pressure application. The maximum pre-bursting size of the balloon can be tailored depending upon the needs of the particular balloon within a wide range of possible maximum pre-bursting sizes.
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Citations
50 Claims
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1. A balloon for a dilatation catheter, the balloon having been made by a process comprising:
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providing a length of tubing made of a nylon material or of a polyamide material, said length of tubing having a predetermined original outer diameter and a predetermined original wall thickness; biaxially orienting a section of said length of tubing by inflating said section with a pressurized fluid in order to increase the diameter of said section to at least in excess of twice said original outer diameter of the length of tubing while thereby simultaneously biaxially orienting the nylon of polyamide material; said balloon has a non-distended inflated profile having a predetermined size as well as a distended size that has a radius greater than that of said predetermined non-distended size, and said distended size has an inflated profile larger than that of said non-distended inflated profile; and said balloon has a tensile strength greater than non-nylon catheter balloons that have an inflated profile exhibiting a distended size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 43)
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26. A dilatation catheter, comprising:
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a catheter body; a dilatation balloon positioned along the length of said catheter body; said balloon being constructed of a nylon material or of a polyamide material tubing that had been biaxially oriented to a predetermined balloon diameter; said balloon has a collapsed profile at which the outer diameter of the balloon approximates the outer diameter of said catheter body, said balloon further having a non-distended inflation diameter at which the balloon is inflated to its said predetermined balloon diameter, and said balloon also exhibits a distended inflation diameter at which the balloon is stretched to a profile having a diameter that is in excess of said predetermined balloon diameter; and said balloon has a tensile strength greater than balloons that are made of materials other than nylon or polyamide materials and that have an inflated profile exhibiting a distended size. - View Dependent Claims (27, 28, 29, 30, 31, 32, 44)
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37. A dilatation balloon for a medical device, comprising:
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a nylon material or a polyamide material tubing that had been biaxially oriented to a predetermined balloon diameter; said balloon has a collapsed profile at which the outer diameter of the balloon approximates the outer diameter of said catheter body, said balloon further having a non-distended inflation diameter at which the balloon is inflated to its said predetermined balloon diameter, and said balloon also exhibits a distended inflation diameter at which the balloon is stretched to a profile having a diameter that is in excess of said predetermined balloon diameter; and said balloon has a tensile strength greater than medical device balloons that are made of materials other than nylon or polyamide materials and that have an inflated profile exhibiting a distended size. - View Dependent Claims (33, 34, 35, 36, 38, 39, 40, 41, 42, 45, 46, 47, 48, 49, 50)
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Specification