发明申请
- 专利标题: Ultrasound transducers for imaging and therapy
- 专利标题(中): 用于成像和治疗的超声换能器
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申请号: US09747310申请日: 2000-12-22
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公开(公告)号: US20010031922A1公开(公告)日: 2001-10-18
- 发明人: Lee Weng , David M. Perozek , Jimin Zhang
- 申请人: Therus Corporation
- 申请人地址: null
- 专利权人: Therus Corporation
- 当前专利权人: Therus Corporation
- 当前专利权人地址: null
- 主分类号: A61B008/00
- IPC分类号: A61B008/00 ; A61H001/00
摘要:
Ultrasound applicators able to both image a treatment site and administer ultrasound therapy include an array of transducer elements that can be focused. In several embodiments, an electronically phased array is used for controlling the focal point of an ultrasound beam. The ultrasound beam produced thereby can also be electronically steered. To reduce the quality factor or Q of the array when the array is used for imaging, an electronic switch is selectively closed, placing a resistance in parallel with each of the array elements. A flexible array is employed in several embodiments and is selectively bent or flexed to vary its radius of curvature and thus control the focal point and/or a direction of focus of the array. In another embodiment, each of the transducer elements comprising the array are individually mechanically pivotable to steer the ultrasonic beam produced by the transducer elements.
公开/授权文献
- US06719694B2 Ultrasound transducers for imaging and therapy 公开/授权日:2004-04-13