发明名称 |
ULTRASONIC MONITORING OF CARDIAC VALVULAR FLOW CONDITION |
摘要 |
<p>A parameter indicative of the condition of a cardiac valve is determined by monitoring blood flow, and/or velocity in a vessel that is coupled to the cardiac valve or in a chamber adjacent to an artificial cardiac valve. One or more ultrasonic transducers (174A, 174B) are provided either in a wall or a cuff (302) disposed about a cardiac vessel (304) to monitor the parameter in regard to a natural or artificial cardiac valve, or in a support sewing ring of an artificial cardiac valve. A conformal array transducer or a tilted element is used to monitor fluid flow or velocity based on the effect of the blood on ultrasonic waves produced by the transducers. The conformal array transducer comprises a plurality of elements that are excited with an input signal provided by an implanted electronics circuit producing ultrasonic waves.</p> |
申请公布号 |
WO0112070(A1) |
申请公布日期 |
2001.02.22 |
申请号 |
WO2000US20308 |
申请日期 |
2000.07.26 |
申请人 |
VASCUSENSE, INC. |
发明人 |
CIMOCHOWSKI, GEORGE, E.;KEILMAN, GEORGE, W. |
分类号 |
A61B5/00;A61B8/04;A61B8/06;A61B8/12;A61M1/36;(IPC1-7):A61B8/12 |
主分类号 |
A61B5/00 |
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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