Occlusion catheter with frictional valve
US7303574B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2003 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Jul 5, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1052
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for treating a vascular condition, including a hollow guidewire having a central lumen and an inflation hole formed in a sidewall of the hollow guidewire, an occlusion balloon attached proximate to a distal end of the hollow guidewire, and a frictional valve. The frictional valve includes a portion of a core wire positioned within a proximal end of the hollow guidewire, a valve plug attached to the core wire, and at least one frictional plug attached to the core wire proximal to the valve plug. Flow of fluid through the central lumen of the hollow guidewire is controlled by axial translation of the core wire to position the valve plug with respect to the inflation hole, while the frictional plug provides a tailored valve compliance characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.