Guidewire with variable flexibility due to polymeric coatings
US5772609A · kind A · utility
427Cited by
62References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Jun 28, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention is a guidewire for guiding a catheter and is used for accessing a targeted site within a lumen system in a body. The guidewire or guidewire section has a wire core, a distal tip region, a polymeric tie layer, and a lubricious coating. The tie layer is preferably constructed to provide for sections of varying flexibility along the length of the guidewire. Variations of the tie layer provide for axially spaced sections of varying flexibility, radially layers of varying flexibility of both. In a special variation, the tie layer is constructed with at least one section providing increased stiffness distally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.