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    TRANSDUCER ASSEMBLIES FORMED OF NON-METAL MATERIALS OR A COMBINATION OF MATERIALS
    6.
    发明公开
    TRANSDUCER ASSEMBLIES FORMED OF NON-METAL MATERIALS OR A COMBINATION OF MATERIALS 审中-公开

    公开(公告)号：EP3593770A1

    公开(公告)日：2020-01-15

    申请号：EP19188825.4

    申请日：2016-04-13

    申请人： Bausch & Lomb Incorporated

    发明人： MORADIAN, Ala ,  MCCARY, Brian, D. ,  GOH, Toh, Seng ,  FITZGERALD, Matthew, J.

    IPC分类号： A61F9/007

    摘要： A phacoemulsification needle includes a hub for connection to an ultrasonic handpiece. An elongated shaft is formed with the hub and extends from the hub. A distal end of the shaft breaks-up tissue when the distal end is caused to be vibrated by the handpiece. At least a distal portion of the shaft is formed of a material that has properties providing advantages compared to a metal needle. Example properties include a substantially lower density, a substantially higher electrical resistivity, a substantially lower thermal conductivity, a substantially lower mechanical lateral stiffness, a substantially higher efficiency of converting electrical energy powering the handpiece into motion of the distal end, a substantially lower acoustical impedance, a substantially higher Poisson's ratio, and a substantially higher mechanical gain.

    VIBRATING SURGICAL DEVICE FOR REMOVAL OF VITREOUS AND OTHER TISSUE
    9.
    发明授权
    VIBRATING SURGICAL DEVICE FOR REMOVAL OF VITREOUS AND OTHER TISSUE 有权

    公开(公告)号：EP2892477B1

    公开(公告)日：2018-07-25

    申请号：EP13835117.6

    申请日：2013-09-06

    申请人： Bausch & Lomb Incorporated

    发明人： MCCARY, Brian, D. ,  GOH, Toh, Seng ,  PERKINS, James, Taylor

    IPC分类号： A61F9/007 ,  A61M1/00

    CPC分类号： A61F9/00745 ,  A61M1/008

    摘要： An ophthalmic surgical device 10 includes a housing 12 having a distal end 14 and a proximal end 16. A cannula 18 is attached to the housing distal end 14 and has a distal tip 20 with at least one port 22 in communication with a lumen 19 extending through the cannula 18 and in communication with an aspiration path 24 in the housing 12. A vibration source 26 is held within the housing 12 for vibrating the distal tip 20 for assisting in vitreous and other tissue removal. An aspiration source 152 connected to the aspiration path 24 for applying a negative pressure to the lumen 19 and the at least one port 22 for removing fluids and the vitreous and other tissue from the eye. The vibration source 26 and the aspiration source 152 together create a periodic bidirectional flow of tissue through the port 22 without creating cavitation externally of the distal tip 20.

    ULTRASONIC NEEDLES AND TRANSDUCER ASSEMBLIES FORMED OF NON-METAL MATERIALS OR A COMBINATION OF MATERIALS
    10.
    发明公开
    ULTRASONIC NEEDLES AND TRANSDUCER ASSEMBLIES FORMED OF NON-METAL MATERIALS OR A COMBINATION OF MATERIALS 审中-公开
    由非金属材料或材料组合组成的超声波针和传感器组件

    公开(公告)号：EP3291778A1

    公开(公告)日：2018-03-14

    申请号：EP16783613.9

    申请日：2016-04-13

    申请人： Bausch & Lomb Incorporated

    发明人： MORADIAN, Ala ,  MCCARY, Brian, D. ,  GOH, Toh, Seng ,  FITZGERALD, Matthew, J.

    IPC分类号： A61F9/007

    CPC分类号： A61F9/00745

    摘要： A phacoemulsification needle includes a hub for connection to an ultrasonic handpiece. An elongated shaft is formed with the hub and extends from the hub. A distal end of the shaft breaks-up tissue when the distal end is caused to be vibrated by the handpiece. At least a distal portion of the shaft is formed of a material that has properties providing advantages compared to a metal needle. Example properties include a substantially lower density, a substantially higher electrical resistivity, a substantially lower thermal conductivity, a substantially lower mechanical lateral stiffness, a substantially higher efficiency of converting electrical energy powering the handpiece into motion of the distal end, a substantially lower acoustical impedance, a substantially higher Poisson's ratio, and a substantially higher mechanical gain.