Non-shortening wrapped balloon
First Claim
Patent Images
1. A balloon catheter comprising a catheter shaft having a longitudinal axis and an inflatable balloon affixed to said shaft, said balloon having an un-inflated length which remains relatively unchanged upon inflation and comprising at least two helically wrapped passes of a first balloon material.
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Accused Products
Abstract
A non-shortening catheter balloon having a longitudinal axis and an inflatable balloon able to be affixed to a catheter shaft is provided. The balloon has an uninflated length which remains relatively unchanged upon inflation and is formed of least two helically oriented wrapped passes of balloon materials at a balanced force angle. Methods of making this balloon are also provided.
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Citations
78 Claims
- 1. A balloon catheter comprising a catheter shaft having a longitudinal axis and an inflatable balloon affixed to said shaft, said balloon having an un-inflated length which remains relatively unchanged upon inflation and comprising at least two helically wrapped passes of a first balloon material.
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59. A method of creating a non-shortening balloon with increased burst pressures, said balloon comprising:
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a) wrapping a mandrel with at least one first balloon material to form a balloon preform; b) exposing the first balloon material to heat; c) removing the mandrel; d) exposing the balloon preform to internal pressure at a reflow temperature; e) inflating the balloon preform into a balloon as it is continued to be exposed to said internal pressure at an increased temperature; and f) removing heat and internal pressure. - View Dependent Claims (60, 61, 62, 63, 64, 65, 66)
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67. A method of creating a non-shortening catheter balloon with increased burst pressures, comprising:
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a) wrapping a wire core with a plurality of first balloon material layer at a low angle; b) further wrapping with a plurality of first balloon material at a low angle in the opposite direction of a) relative to the longitudinal balloon axis; c) exposing the plurality of first balloon material layers to heat to bond them together creating a preform; d) removing the wire core; e) placing the balloon preform in a mold and exposing the balloon preform to internal pressure; f) inflating the balloon preform as it is continued to be exposed to said internal pressure creating a balloon; g) removing the balloon from the mold; h) wrapping the inflated balloon with second balloon material layers oriented at an angle between 54 and 90 degrees; and i) bonding the first and second balloon material. - View Dependent Claims (68, 69, 70, 78)
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- 71. A balloon catheter comprising a catheter shaft having a longitudinal axis and an inflatable balloon affixed to said shaft, said balloon having an un-inflated length which remains relatively unchanged upon inflation and comprising at least two helically wrapped passes of a first balloon material which are wrapped in opposing directions each with a wrap angle of less than 15 degrees with respect to the longitudinal axis.
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74. A catheter balloon comprising a balloon having two ends with a longitudinal axis running therebetween, and a catheter shaft comprising a reinforced inner member located adjacent to the longitudinal axis of the balloon and between the shaft and the balloon wherein the reinforced inner member is modulated to compensate for pressure changes in the balloon and prevent foreshortening of the catheter balloon upon inflation.
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75. A balloon catheter comprising a balloon having two ends with a longitudinal axis running therebetween, and catheter shaft comprising an expandable pleated shaft section located adjacent to the longitudinal axis of the balloon wherein the expandable pleated shaft section is formed to compensate for pressure changes in the balloon and prevent foreshortening of the catheter balloon upon inflation.
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76. A balloon catheter comprising a balloon having two ends with a longitudinal axis running therebetween, and a catheter shaft comprising an outer seal dimension having both convex portions and concave portions which provide an increased surface area and increased seal strength when attached to the balloon ends.
Specification