公开(公告)号：US08347738B2

公开(公告)日：2013-01-08

申请号：US12151963

申请日：2008-05-09

申请人： Alexander Tung ,  Günter Niemeyer ,  David Liang ,  Byong-Ho Park ,  Friedrich B. Prinz ,  Bob S. Hu

发明人： Alexander Tung ,  Günter Niemeyer ,  David Liang ,  Byong-Ho Park ,  Friedrich B. Prinz ,  Bob S. Hu

IPC分类号： G01L1/22

CPC分类号： A61B5/103 ,  A61B5/6852 ,  A61B5/6885 ,  A61B5/7455 ,  A61B2034/2061 ,  A61B2562/0252 ,  A61B2562/0261 ,  A61B2562/0266 ,  A61B2562/043

摘要： This invention provides small position sensors for applications where localized sensing in a small volume of space is needed but where measurement of large relative displacement is also necessary. The invention enables a surgeon to accurately position the tip of a catheter during minimally invasive therapy. The current invention further improves the quality of tactile feedback to a physician during catheter-based surgeries with an axial force sensor at the tip of the catheter that allows for the transmission of force information to the physician. One embodiment of this invention is a position sensor for active interventional catheters, where the sensor may be laser-machined shape memory alloy (SMA), and the catheter actuators may be heated SMA or wire-pulleys. Providing position feedback from a catheter during minimally invasive therapy allows for closed-loop control of the catheter tip position under computer-aided guidance and enable force feedback to the physician.

公开(公告)号：US20090099551A1

公开(公告)日：2009-04-16

申请号：US12151963

申请日：2008-05-09

申请人： Alexander Tung ,  Gunter Niemeyer ,  David Liang ,  Byong-Ho Park ,  Friedrich B. Prinz ,  Bob S. Hu

发明人： Alexander Tung ,  Gunter Niemeyer ,  David Liang ,  Byong-Ho Park ,  Friedrich B. Prinz ,  Bob S. Hu

IPC分类号： A61M25/00

CPC分类号： A61B5/103 ,  A61B5/6852 ,  A61B5/6885 ,  A61B5/7455 ,  A61B2034/2061 ,  A61B2562/0252 ,  A61B2562/0261 ,  A61B2562/0266 ,  A61B2562/043

摘要： This invention provides small position sensors for applications where localized sensing in a small volume of space is needed but where measurement of large relative displacement is also necessary. The invention enables a surgeon to accurately position the tip of a catheter during minimally invasive therapy. The current invention further improves the quality of tactile feedback to a physician during catheter-based surgeries with an axial force sensor at the tip of the catheter that allows for the transmission of force information to the physician. One embodiment of this invention is a position sensor for active interventional catheters, where the sensor may be laser-machined shape memory alloy (SMA), and the catheter actuators may be heated SMA or wire-pulleys. Providing position feedback from a catheter during minimally invasive therapy allows for closed-loop control of the catheter tip position under computer-aided guidance and enable force feedback to the physician.

摘要翻译： 本发明提供小型位置传感器，用于需要在小体积空间中进行局部感测但也需要测量大的相对位移的应用。 本发明使得外科医生能够在微创治疗期间精确地定位导管的尖端。 本发明进一步提高了在基于导管的手术过程中对医生的触觉反馈的质量，其中导管的尖端处的轴向力传感器允许向医师传递力信息。 本发明的一个实施例是用于主动介入导管的位置传感器，其中传感器可以是激光加工的形状记忆合金（SMA），并且导管致动器可以被加热SMA或线滑轮。 在微创治疗期间从导管提供位置反馈允许在计算机辅助引导下对导管尖端位置进行闭环控制，并使能力反馈给医师。