Guide wire with hydrophilically coated tip
US6251086A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1999 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Jul 27, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A guide wire including a lubricous distal portion and a less lubricous intermediate portion proximal of said distal portion. One guide wire provides a highly lubricous distal portion with a hydrophilic layer and a less lubricous intermediate portion with a hydrophobic layer. Another guide wire provides a lubricous distal portion with a polymer tip that is itself hydrophilic. Yet another guide wire provides a less lubricous intermediate portion using a stainless steel coil helically wound around the tapering intermediate portion. The coil is preferably coated with a hydrophobic coating such as PTFE or silicone. The coil can either abut the distal portion proximal end or extend into the distal portion interior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.