会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 71. 发明授权
    • Extracorporeal shock wave source with a piezoelectric generator
    • 具有压电发生器的体外冲击波源
    • US4823773A
    • 1989-04-25
    • US32603
    • 1987-04-01
    • Georg NaserHelmut ReichenbergerHubert Schwark
    • Georg NaserHelmut ReichenbergerHubert Schwark
    • A61B17/22A61B18/00G10K11/02G10K11/32
    • A61B17/2251G10K11/02G10K11/32
    • An extracorporeal lithotripter with a piezoceramic pressure source which emits focused pressure waves focussed at a point within a patient at which a calculus to be disintegrated is located. A number of discrete piezoceramic elements are arranged along a curve forming an ultrasound resonator having a diameter of at least about 10 cm and a radius of curvature up to about 20 cm, and operated at an ultrasound frequency below about 500 kHz. The volume between the ultrasound resonator and a terminating membrane through which the pressure waves pass is filled with a A having an acoustic impedance higher than water, preferably greater than or equal to the acoustic impedance of ethylene glycol, so that the piezoceramic elements, forming the pressure source, can be disposed closer to the focus, thereby reducing losses due to non-linear attenuation. The overall efficiency of the lithotripter is thereby increased, and the load of acoustical energy on the patient is diminished. A coupling member may be disposed between the terminating membrane and the patient.
    • 具有压电陶瓷压力源的体外碎石机,其发射集中的压力波,其聚焦在待分解的微积分的患者内的点处。 多个离散的压电陶瓷元件沿着形成具有至少约10cm的直径和曲率半径高达约20cm的超声波谐振器的曲线布置,并且在低于约500kHz的超声频率下操作。 超声波谐振器和压力波通过的终止膜之间的体积填充有具有高于水的声阻抗的A,优选大于或等于乙二醇的声阻抗,从而形成压电陶瓷元件 压力源可以设置得更靠近焦点,从而减少由于非线性衰减造成的损失。 因此,碎石机的整体效率提高,患者的声能负荷减弱。 联接构件可以设置在终止膜和患者之间。