Guidewire tip construction
US5365942A · kind A · utility
123Cited by
2References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1992 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Jun 25, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A guidewire for use in guiding a catheter has a tip construction that includes a core wire within a helical coil. The core wire has a distal tip segment that is tapered and is further impressed with a pair of opposed flattened surfaces extending along the taper, the surfaces lying at an angle to each other and defining a progressively flattened tip having increased width in a distal direction to define a duck-bill configuration. The tip construction provides improved column strength at the tip to resist guidewire prolapse while providing excellent torsional and flexibility characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.