Guidewire apparatus for temporary distal embolic protection
US6706055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2003 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Jan 24, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A guidewire apparatus for use during percutaneous catheter interventions such as angioplasty or stent deployment. A protection element comprising a filter or an occluder is mounted near the distal end of a steerable guidewire, which guides a therapeutic catheter. The guidewire apparatus comprises a hollow shaft movably disposed about a core wire. The shaft and core wire control relative displacement of the ends of the protection element, causing transformation of the protection element between a deployed configuration and a collapsed configuration. The protection element is freely rotatable about the guidewire apparatus. A tracking member disposed adjacent the distal end of the guidewire apparatus can be used to guide the device along another guidewire. Thrust bearings may be employed to facilitate unlimited rotation of the steerable guidewire within the protection element, especially while the protection element is retained in the collapsed configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.