发明名称 |
SHOCKWAVE GENERATOR HAVING AN ULTRASOUND APPLICATOR SHIELDED FROM SHOCKWAVES |
摘要 |
A shockwave generator for extracorporeal lithotripsy has a housing filled with an acoustic propagation medium, through which shockwaves propagate, and in which an ultrasound applicator is disposed for locating a calculus to be treated. The ultrasound applicator has components which may be damaged if traversed by shockwaves. At least a portion of the ultrasound applicator in which these components are disposed is therefore acoustically shielded with a substance having an acoustic impedance substantially differing from the acoustic impedance of the propagation medium, so that essential parts of the shockwaves are reflected thereby and thus the non-reflected parts do not reach the shielded portion of the ultrasound applicator with sufficient energy to damage the compartments.
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申请公布号 |
US5228447(A) |
申请公布日期 |
1993.07.20 |
申请号 |
US19910646838 |
申请日期 |
1991.01.28 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
HARDER, RUDOLF;HETZEL, GERT;KAARMANN, HANS;KOEHLER, GEORG;KUEHNKE, HERMANN;ROHWEDDER, ARNIM;SCHAETZLE, ULRICH |
分类号 |
A61B17/22;A61B17/225;A61B18/00;G10K11/02;G10K15/04 |
主分类号 |
A61B17/22 |
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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