发明名称 |
ROTATIONAL ATHERECTOMY DEVICE AND METHOD TO IMPROVE ABRADING EFFICIENCY |
摘要 |
<p>The invention provides a rotational atherectomy system, device and method having, in various embodiments, a flexible, elongated, rotatable drive shaft with at least one eccentric abrading head attached thereto, wherein the abrading head comprises at least one groove thereon. The eccentric grooved abrading comprises a tissue removing surface-typically an abrasive surface and/or at least one groove. Preferably the eccentric enlarged abrading head has a center of mass spaced radially from the rotational axis of the drive shaft, facilitating the ability of the device to open the stenotic lesion to a diameter substantially larger than the outer diameter of the enlarged abrading head when operated at high speeds. The groove(s) provide improved efficacy in the abrasion of non-calcified and/or soft tissue as well as provide a means for breaking the hydraulic wedge between the abrading head and the stenotic tissue.</p> |
申请公布号 |
EP2429424(A1) |
申请公布日期 |
2012.03.21 |
申请号 |
EP20100775219 |
申请日期 |
2010.03.18 |
申请人 |
CARDIOVASCULAR SYSTEMS, INC. |
发明人 |
THATCHER, ROBERT J.;KOEHN, PAUL A.;CZYSCON, JOSEPH S. |
分类号 |
A61B17/3207;A61B17/22;A61B17/32 |
主分类号 |
A61B17/3207 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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