Apparatus and method for vascular embolization
US6015424A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1998 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Apr 28, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/12063
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for vascular embolization, deployable through a microcatheter, includes a flexible, elongate deployment tube dimensioned for insertion through the microcatheter, and a filamentous embolic device releasably attached to the distal end of the tube. The embolic device is controllably transformable from a soft, compliant state to a rigid or semi-rigid state. The embolic device may include a polymeric material that is transformable by contact with vascular blood or with a liquid that is cooler than vascular blood, or it may include a metallic material that is transformable by electrolytic corrosion. The embolic device may be a continuous filamentous polymeric extrusion; an elongate microcoil filled with polymeric material; an elongate, multi-segmented chain including polymeric interconnecting portions; or an elongate chain of metal segments that are fused together by electrolytic corrosion. An aneurysm is embolized with this apparatus by deploying a microcatheter so that its distal end is adjacent the aneurysm; deploying the embolic device through the microcatheter and into the aneurysm so that the embolic device forms a web-like mass in the aneurysm; and transforming the embol…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.