Vasoocclusion coil device having a core therein
US6551340B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1999 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Oct 6, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/1205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A coil-type vasoocclusion device (10) for establishing an embolus or vascular occlusion in a human or veterinary patient is adapted for introduction into the patient via a catheter (32). The device (10) first includes a coil (12) having proximal and distal coil ends (16,18) and a coil lumen (20). The device (10) also includes a core (22) disposed in at least part of the coil lumen (20), the core having proximal and distal core ends (24,26). Only one core end (24 or 26) is directly affixed to a respective end (16 or 18) of the coil (12); the other core end (26 or 24) is not directly connected to either end (16 or 18) of the coil (12). The core (22) is preferably nitinol in a superelastic state, being in other than its stress induced, martensitic condition. The device (10) can include a thrombogenic material (38) connected to or carried by the coil (12). The coil (12) is preferably adapted to achieve a suitable secondary shape (60) when deployed from the catheter (32). A medical device (40) combining the catheter (32), a pusher (34), a coupling (30) and the vasoocclusion device (10) is also disclosed. The vasoocclusion device (10) is easily repositioned in the vascular system, thereb…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.