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SYSTEM, DEVICE, AND METHOD FOR INTERRUPTED DUAL ACTION (SANDING AND CUTTING) FORCES WITH CONTINUAL MACERATION AND ASPIRATION
专利权人:
Inc.;Cardiovascular Systems
发明人:
Victor L. Schoenle,Joseph P. Higgins
申请号:
US16665726
公开号:
US20200129202A1
申请日:
2019.10.28
申请国别(地区):
US
年份:
2020
代理人:
摘要:
A rotational atherectomy device includes a drive shaft, a cutter mechanism coupled to the drive shaft and configured to cut occlusive material from a lesion, and a multi-stage macerator coupled to the drive shaft and configured to macerate cut occlusive material into a fine slurry. Successive stages of the multi-stage macerator macerate the cut occlusive material into successively smaller particles, which are moved proximally through a lumen of a sheath of the device that surrounds the drive shaft proximal to the macerator. The device may include a movable cutter mechanism guard that is passively rotatable between a first position in which it covers the cutter mechanism and a second position in which it exposes the cutter mechanism. One or more features of the device may limit a depth to which the cutter mechanism is able to cut the occlusive material to reduce a likelihood of undesirable tissue dissection.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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