Stretch resistant embolic coil delivery system with mechanical release mechanism
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United States of America Patent
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May 4, 2010
Grant Date -
Feb 21, 2008
app pub date -
May 30, 2007
filing date -
Jun 2, 2005
priority date (Note) -
In Force
status (Latency Note)
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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 extends from the distal end of the pusher member and is comprised of a shape memory material adapted to lift the retaining ring off of the engagement member at human body temperature when the detachment member is withdrawn from the aperture of the engagement member.
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