Non-shortening high angle wrapped balloons
First Claim
Patent Images
1. A high pressure, large diameter, high expansion ratio balloon having a longitudinal axis and comprising a composite film wound into a wrapped balloon having a base pass, a radial pass, and a helical pass, said composite film forming a predefined maximum expanded diameter and which does not change length during expansion.
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Abstract
The present invention provides a balloon which achieves diameters greater than 6 mm for securement to a catheter. The balloon includes an elastomeric generally hollow pressure expandable body which exhibits essentially radial symmetry and constant length when expanded under an internally applied minimum working pressure from an uninflated state.
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Citations
41 Claims
- 1. A high pressure, large diameter, high expansion ratio balloon having a longitudinal axis and comprising a composite film wound into a wrapped balloon having a base pass, a radial pass, and a helical pass, said composite film forming a predefined maximum expanded diameter and which does not change length during expansion.
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10. A method of creating a soft, high pressure, large diameter, high expansion ratio balloon with increased burst pressures, comprising:
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a. wrapping composite film in essentially longitudinal and essentially helical passes around a mandrel having an outer dimension of the desired final inflated internal diameter of the catheter balloon; b. ceasing wrapping of the mandrel when a final desired strength of the catheter balloon is achieved with the film thickness to form a balloon structure; and c. minimizing the balloon structure diameter to create a soft, high pressure, large diameter, greater than 400 percent expansion ratio balloon. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of creating a soft, high pressure, large diameter, high expansion ratio balloon with increased burst pressures, comprising:
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a. wrapping film in essentially force resultant 54 degree helical layers around a mandrel having an outer dimension of the desired final inflated internal diameter of the catheter balloon; b. ceasing wrapping of the mandrel when a final desired strength of the catheter balloon is achieved; and c. minimizing the balloon structure diameter to create a soft, high pressure, large diameter, high expansion ratio balloon. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A non-shortening wrapped catheter balloon having a longitudinal axis and comprising a composite film wound into a wrapped balloon having at least one radial wrap layer;
- at least one base wrap layer; and
at least one helical wrap layer. - View Dependent Claims (27, 28, 29)
- at least one base wrap layer; and
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25. A non-shortening wrapped catheter balloon comprising a balloon having a longitudinal axis said balloon comprising at least one radial wrap layer;
- at least one base wrap layer; and
three helical layers. - View Dependent Claims (26, 30, 31, 32)
- at least one base wrap layer; and
Specification