Enhanced flexibility neurovascular catheter
US10183145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Feb 24, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7542
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A catheter is provided, such as for distal neurovascular access or aspiration. The catheter includes an elongate flexible body, having a proximal end, a distal end and a side wall defining a central lumen. A distal zone of the side wall includes a tubular inner liner, a tie layer separated from the lumen by the inner liner, a helical coil surrounding the tie layer, adjacent windings of the coil spaced progressively further apart in the distal direction. An outer jacket surrounds the helical coil. The outer jacket is formed from a plurality of tubular segments positioned end to end, coaxially about the coil. The flexural load profile of the catheter as a function of catheter length is configured to provide enhanced distal flexibility while maintaining high backup support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.