Vaso-occlusive device
US10542995B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2015 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Aug 2, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/12063
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A vaso-occlusive device includes an inner coil made from inner coil wire having a first diameter and formed from a first material, and an outer coil disposed at least partially around the inner coil and made from outer coil wire having a second diameter and formed from a second material. The inner coil has a first pitch and the outer coil has a second pitch. The first diameter, material, and pitch are different from the second diameter, material, and pitch, respectively. In some embodiments, the second diameter is less than the first diameter, the second material is softer than the first material, and the second pitch is more open than the first pitch. In some embodiments, the inner coil extends proximally beyond the outer coil. In one embodiment, a vaso-occlusive device includes an outer coil defining a lumen and an inner coil disposed at least partially in the lumen, wherein the vaso-occlusive device also includes an intermediate layer disposed between the inner coil and the outer coil, wherein the intermediate layer includes a biocompatible metal or a biocompatible, swellable polymer. The vaso-occlusive device may also include a biodegradable coating disposed on the outer surfac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.