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ECCENTRIC SYSTEM OF ABRASIVE ELEMENTS WITH EQUAL MASS FOR ROTATIONAL ATHERECTOMY
专利权人:
发明人:
Matthew D. Cambronne
申请号:
US15906067
公开号:
US20180185057A1
申请日:
2018.02.27
申请国别(地区):
US
年份:
2018
代理人:
摘要:
The invention provides a rotational atherectomy device having, in various embodiments, a flexible, elongated, rotatable drive shaft with a system of eccentric abrading heads attached thereto. At least part of the eccentric enlarged abrading heads in the system have a tissue removing surface—typically an abrasive surface. In certain embodiments, the abrading heads may be at least partially hollow. Preferably the eccentric enlarged abrading heads have centers of mass spaced radially from the rotational axis of the drive shaft, facilitating the ability of the system of eccentric abrading heads to work together to open the stenotic lesion to a diameter substantially larger than the outer resting diameter of the enlarged abrading heads when operated at high speeds. Therefore, certain embodiments comprise a system having unbalanced centers of mass to not only stimulate greater rotational diameters but also arranged in a manner whereby a debris-removing augering effect occurs. Alternatively, other embodiments may comprise systems having abrading heads with balanced centers of mass.
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