| 摘要 |
PROBLEM TO BE SOLVED: To provide a placing system using a catheter to deliver a stretch resistant embolic device to a predetermined site within a blood vessel. SOLUTION: A medical device for placing the embolic device at the predetermined site within a blood vessel of a body includes the delivery catheter and a flexible pusher member which has a lumen and is slidably disposed within the lumen of the catheter. The stretch resistant embolic device is retained in the delivery catheter by a mechanical interlocking mechanism including an engagement member which is slidably disposed within 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 and locks the embolic device onto the engagement member. The engagement member engages the retaining ring on the embolic device. When the embolic device is advanced to the predetermined site within the blood vessel, the detachment member is withdrawn from the aperture to release the embolic device at the treatment site. COPYRIGHT: (C)2007,JPO&INPIT
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