Non-shortening high angle wrapped balloons
First Claim
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1. A balloon having a longitudinal axis and comprising a base layer, a radial layer, and a helical layer of film, said film does not substantially 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 balloon having a longitudinal axis and comprising a base layer, a radial layer, and a helical layer of film, said film does not substantially change length during expansion.
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19. A method of creating a soft, high pressure, large diameter, high expansion ratio balloon with increased burst pressures, comprising:
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a. layering 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 layering 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. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method of creating a soft, high pressure, large diameter, high expansion ratio balloon with increased burst pressures, comprising:
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a. layering film in helical layers around a mandrel having an outer dimension of the desired final inflated internal diameter of the catheter balloon; b. ceasing layering on 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 (27, 28, 29, 30, 31, 32)
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33. A non-shortening catheter balloon comprising a balloon having a longitudinal axis said balloon comprising at least one radial layer;
- at least one base layer; and
at least one helical layer. - View Dependent Claims (34, 35, 36)
- at least one base layer; and
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37. A non-shortening catheter balloon comprising a balloon having a longitudinal axis said balloon comprising at least one radial layer;
- at least one base layer; and
three helical layers. - View Dependent Claims (38, 39, 40, 41)
- at least one base layer; and
Specification