05-02-2015 дата публикации
Номер: US20150039021A1
Принадлежит:
Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed. 1. A retrieval catheter for retrieving a device from an implantation site within the body, comprising: an elongate, flexible body, having a proximal end and a distal end; a grasping structure on the distal end, for grasping the device; a flared tubular sleeve, for surrounding at least a portion of the device; and an outer tubular sleeve, for surrounding the flared tubular sleeve. This application is a continuation of U.S. patent application Ser. No. 13/617,308, filed Sep. 14, 2012, which is a continuation of U.S. patent application Ser. No. 10/441,600, filed May 19, 2003, now U.S. Pat. No. 8,287,563, which is a divisional of U.S. patent application Ser. No. 10/033,371, filed Oct. 19, 2001, now U.S. Pat. No. 7,044,134, which is a continuation-in-part of U.S. patent application Ser. No. 09/435,562, filed Nov. 8, 1999, now U.S. Pat. No. 7,128,073, the disclosures of which are incorporated in their entirety herein by reference.Embolic stroke is the nation's third leading killer for adults, and is a major cause of disability. There are over 700,000 strokes per year in the United States alone. Of these, roughly 100,000 are hemoragic, and 600,000 are ischemic (either due to vessel narrowing or to embolism). The most common cause of embolie stroke emanating from the heart is thrombus formation due to atrial fibrillation. Approximately 80,000 strokes per year are attributable to atrial fibrillation. Atrial fibrillation is an arrhythmia of the heart that results in a rapid and chaotic heartbeat that produces lower cardiac output and irregular and turbulent blood flow in the vascular system. There are over five million people worldwide with atrial fibrillation, with about four hundred thousand new ...
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