Multiple layer high strength balloon for dilatation catheter
US5358486A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Aug 11, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1334
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A balloon for a dilatation catheter is formed to define relatively thin cone and neck segments at the opposite ends of the balloon by forming the balloon in a plurality of separate very thin layers. The balloon is built up from a plurality of layers including an inner layer which defines a complete balloon having a cylindrical midportion, cones at its ends and necks at the ends of the cones. Each successive outer layer is trimmed to be shorter than the next adjacent innermost layer, the trimming being effected in the region of the cones. The composite balloon thus formed has a staggered wall thickness in the region of the cones as to define a cone that is approximately uniform in wall thickness in a direction extending toward the neck region. The resulting balloon will be better adapted to collapse to a low profile about the catheter shaft on which it is mounted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.