Stretch resistant embolic coil delivery system with spring release mechanism
US7811305B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2006 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | May 27, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/12054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical device for placing an embolic device at a predetermined site within a vessel of the body including a delivery catheter and a flexible pusher member slidably disposed within the lumen of the catheter. An embolic device is retained within the delivery catheter by a mechanical interlocking mechanism which includes an engagement member attached to the distal end of the pusher member and extends through a retaining ring at the proximal end of the embolic device. A detachment member extends through an aperture at the distal end of the engagement member thereby locking the embolic device onto the pusher member. A kicker member, which takes the form of a helical spring, extends from the distal end of the pusher member and is biased so as to lift the retaining ring off of the engagement member to ensure the release of the embolic device when the detachment member is withdrawn from the aperture of the engagement member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.