发明名称 |
ULTRASONIC TRANSDUCER SYSTEM |
摘要 |
An ultrasonic surgical tool has an elongate waveguide operatively connected or connectable to a source of ultrasonic vibrations. An operative element at a distal end of the waveguide has a diameter less than that of the waveguide. A connecting portion of intermediate diameter may connect the operative element and the waveguide. A proximal end of the operative element forms a first step junction, located at a nodal plane of ultrasonic vibrations in the waveguide and operative element, producing a velocity amplitude gain across the step junction. A second zero-gain step junction between the connecting portion and the waveguide is located at an anti-nodal plane. The operative element may include a curved distal cutting and welding element having a pair of elongate welding grooves defining a cutting edge. Alternatively, the operative element may include a welding element having a flat or slightly ridged operative face. |
申请公布号 |
EP2291129(A2) |
申请公布日期 |
2011.03.09 |
申请号 |
EP20090750096 |
申请日期 |
2009.05.21 |
申请人 |
SRA DEVELOPMENTS LIMITED |
发明人 |
SLIPSZENKO, JAMES, ANTON;EDE, MICHAEL, JAMES;YOUNG, STEPHEN, MICHAEL, RADLEY |
分类号 |
A61B17/32;A61B17/22;B06B1/00;B06B1/06;B06B3/00 |
主分类号 |
A61B17/32 |
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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