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公开(公告)号：US06526984B1
公开(公告)日：2003-03-04
申请号：US09673815
申请日：2000-10-20
IPC分类号： A61B1900
CPC分类号： A61L31/028 , A61N1/0565 , C04B35/495
摘要： A biocompatible medical implant has at least one part thereof composed of ceramic material with the formula NaxKyNbO3, wherein 0≦x≦0.8, 0.2≦y≦1, and x+y=1. The ceramic material can be polarized to give the implant spatially varying piezoelectric properties. Signals can be measured from the respective piezoelectric regions of the selectively polarized ceramic material to provide an indication of the degree of fixation of the implant to surrounding tissue.
摘要翻译： 生物相容性医用植入体至少有一部分由具有式NaxKyNbO3的陶瓷材料构成，其中0≤x≤0.8,0.2≤y≤1且x + y = 1。 陶瓷材料可以被极化以给予植入物空间上变化的压电性质。 可以从选择性极化的陶瓷材料的各个压电区域测量信号，以提供植入物到周围组织的固定程度的指示。
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2.发明授权公开(公告)号：US06886411B2
公开(公告)日：2005-05-03
申请号：US10399813
申请日：2001-10-24
IPC分类号： A61B5/0215 , A61B19/00 , G01L9/06 , G01L9/08 , G01L7/00
CPC分类号： G01L9/08 , A61B5/0215 , A61B2090/064 , A61B2562/0247 , A61M2025/0002 , G01L9/06
摘要： A fluid pressure sensor for a lead or catheter intended for placement in a living organism, such as a human heart, includes a rigid annular or tubular supporting structure and a piezoelectric element disposed on at least a portion of the outer surface thereof. The piezoelectric element delivers an electrical signal when subjected to a pressure variation, and exhibits circumferential sensitivity. The rigidity of the sensor is defined to satisfy predetermined criteria to ensure that the sensor, when sensing pressure transferred to the sensor through an on-growth of tissue on the sensor, which is at least 90% of the signal which the sensor would emit without the on-growth.
摘要翻译： 用于放置在诸如人心脏的生物体中的用于引导或导管的流体压力传感器包括刚性环形或管状支撑结构和设置在其外表面的至少一部分上的压电元件。 当经受压力变化时，压电元件传递电信号，并且具有周向灵敏度。 传感器的刚度被定义为满足预定的标准，以确保传感器在通过传感器上的组织的增长传感到传感器的压力时，其传感器将不会发射的信号的至少90％ 增长。
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3.发明授权Apparatus for determining the actual status of a piezoelectric sensor in a medical implant 失效用于确定医疗植入物中的压电传感器的实际状态的装置公开(公告)号：US06829507B1
公开(公告)日：2004-12-07
申请号：US09787735
申请日：2001-10-15
IPC分类号： A61N108
CPC分类号： A61N1/36542 , A61N1/36535 , G01P13/00 , G01P15/09 , Y10S128/901
摘要： In an apparatus for determining the actual status of a piezoelectric sensor in a medical implant, electrical charges generated in the sensor, in response to changes in acceleration and/or gravitational force or other loads acting on the sensor, are continuously detected and the charges are then removed from the sensor, thereby maintaining the voltage across the sensor at a substantial constant zero level. The detected charges, both negative and positive, are integrated, thereby providing a resulting integrated signal representing the actual status of the sensor. The integrated signal is then evaluated for determining the physical activity and/or the posture of a patient in whom the medical implant is implanted.
摘要翻译： 在用于确定医用植入物中的压电传感器的实际状态的装置中，响应于加速度和/或重力作用在传感器上的其它负载的变化而在传感器中产生的电荷被连续地检测到，并且电荷是 然后从传感器中取出，从而将传感器两端的电压保持在基本恒定的零电平。 检测到的负和负的电荷被积分，从而提供表示传感器的实际状态的结果集成信号。 然后评估积分信号以确定植入医用植入物的患者的身体活动和/或姿势。
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公开(公告)号：US06571130B1
公开(公告)日：2003-05-27
申请号：US09673747
申请日：2000-10-20
IPC分类号： A61N105
CPC分类号： C04B35/495 , A61L31/028 , A61N1/0565
摘要： A medical implant has an element with at least a part thereof which is composed of piezoelectric material. The piezoelectric material is suitable for contact with body tissue and/or body fluids, and has the formula NaxKyNbO3, with 0≦x≦0.8, 0.2≦y≦1, and x+y=1.
摘要翻译： 医疗植入物具有至少一部分由压电材料构成的元件。 压电材料适于与身体组织和/或体液接触，并且具有公式NaxKyNbO3，其中0 <= x <= 0.8,0.2 <= y <= 1，x + y = 1。
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