Balloon catheter for angioplasty
US5370615A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1994 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Jan 18, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M25/104
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved balloon catheter is disclosed having both the flexibility of a coaxial construction and the advantages of dual lumen construction as well. The proximal section is of relatively rigid dual lumen construction, wherein an inflation lumen and a guidewire lumen extend longitudinally through the proximal section in a generally parallel and side-by-side relationship. A distal section of the balloon catheter is coupled to the distal end of the proximal section and is of a coaxial construction. Near the transition between the two sections, an inner coaxial member defining the distal guidewire lumen is offset from the center of the otherwise coaxial distal section so that the inner coaxial member is substantially aligned with the distal end of the proximal guidewire lumen. The distal and proximal portions of the guidewire lumen are aligned and heat sealed together at the transition between the dual lumen constructed proximal section and the coaxially constructed distal section of the balloon catheter, to provide a continuous guidewire lumen extending through both sections all the way to a balloon mounted near the distal tip of the distal section. In the dual lumen constructed pro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.