Balloon catheter and method of manufacture
US6554795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1998 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Feb 19, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C55/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed herein is a compliant catheter balloon with an improved elastic response and reduced longitudinal expansion, and a method of forming the same. The balloon comprises a SEBS block copolymer, which is longitudinally pre-stretched during the balloon manufacture process. In order to control the working length of a balloon on a catheter, at least one adhesive stop is provided on the catheter which prevents adhesive from wicking into the working length of the balloon. Preferably, a pair of thermoset tubings with an outer diameter size close to the size of the inner diameter of the balloon are inserted on the distal portion of the catheter. After the proper placement of the balloon, the adhesive is applied at the balloon's proximal and distal ends. As the adhesive wicks to the balloon, the thermoset tubings will eventually stop the adhesive to prevent further wicking of adhesive into the balloon's working length. In another aspect of the present invention, there is provided a method of manufacturing a balloon catheter to improve centering of the balloon on the catheter. After a balloon tubing is stretched, the stretched tubing is clamped to a fixture and stabilized at about 100&d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.