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1. 发明授权

US5127410A Ultrasound probe and lens assembly for use therein 失效
标题翻译：超声波探头和镜头组件用于其中
公开(公告)号：US5127410A
公开(公告)日：1992-07-07
申请号：US623314
申请日：1990-12-06
申请人： Robert W. King , John W. Duffy , James N. C. Chen
发明人： Robert W. King , John W. Duffy , James N. C. Chen
IPC分类号： A61B8/00 , G01N29/22 , G10K11/30
CPC分类号： G10K11/30 , G01N29/221 , A61N2007/0056 , A61N2007/006 , A61N7/02
摘要： This invention provides an ultrasonic transducer probe for medical scanning and a lens assembly for use therein. The probe has a housing in which an ultrasonic transducer array is mounted, there being an opening in the housing adjacent the transducer array. A first lens subassembly is mounted to the transducer and moves therewith if the transducer is rotated. A second lens subassembly is mounted to the housing to fill the opening therein, and includes, for example, a thin plastic film covering the opening and bonded to the housing to seal the opening and a film backing lens or layer. The first lens subassembly is preferably a compound lens. The lens subassemblies are formed of materials having relative acoustic properties, and having mating surfaces which are shaped, to selectively focus ultrasonic signals from the transducers.

2. 发明授权

US5187981A Ultrasound transducer 失效
标题翻译：超声波换能器
公开(公告)号：US5187981A
公开(公告)日：1993-02-23
申请号：US667858
申请日：1991-03-12
申请人： James N. C. Chen , Susan Ostrowski
发明人： James N. C. Chen , Susan Ostrowski
IPC分类号： A61B8/00 , G10K11/00
CPC分类号： A61B8/4281 , G10K11/002
摘要： A transducer assembly, suitable for medical examinations, for generating an apodized sector shaped beam of energy. A transducer in the form of a crystal, has a ring-like structure on its face which apodizes the signal produced by the transducer by providing a greater amount of attenuation at the transducer's periphery than at the transducer's center.
摘要翻译：适用于医学检查的换能器组件，用于产生变迹的扇形形状的能量束。晶体形式的传感器在其表面上具有环形结构，其通过在换能器周边处比在换能器中心处提供更大量的衰减来使由换能器产生的信号变。。

3. 发明授权

US4821838A Acoustic damper 失效
标题翻译：声阻尼器
公开(公告)号：US4821838A
公开(公告)日：1989-04-18
申请号：US115216
申请日：1987-10-30
申请人： James N. C. Chen
发明人： James N. C. Chen
IPC分类号： G10K11/02 , A61B8/00 , G01N29/24 , G10K11/00 , H04R17/00 , H04R7/00
CPC分类号： G10K11/002
摘要： An acoustic damper for substantially reducing the reverberation echoes at the junction between an acoustic signal propagating fluid and a material having an acoustic impedance substantially different from that of the fluid. The damper, which is particularly adapted for use in ultrasonic transducers, is formed of a material having an acoustic impedance which substantially matches the acoustic impedance of the fluid, such material preferably being a foam plastic material having sufficient hardness to be acoustically stable. For preferred embodiments, the damper is formed of a laminate of the layer described above and a second layer of a material which provides high acoustic attenuation, such as cork material.

4. 发明授权

US5285789A Ultrasonic transducer apodization using acoustic blocking layer 失效
标题翻译：超声波换能器使用声阻挡层进行变迹
公开(公告)号：US5285789A
公开(公告)日：1994-02-15
申请号：US871495
申请日：1992-04-21
申请人： James N. C. Chen , Gregory G. Vogel , Martin K. Mason
发明人： James N. C. Chen , Gregory G. Vogel , Martin K. Mason
IPC分类号： G10K11/00 , A61B8/00
CPC分类号： G10K11/002
摘要： An ultrasound transducer for imaging a target features a piezoelectric transducer element for emitting an ultrasonic wave toward the target and an apodizer fashioned from a thin sheet acoustic blocking layer. The ultrasound acoustic blocking layer is placed between the front surface of the transducer and the target for substantially blocking the ultrasonic wave emission from a portion of the front surface area defining an inactive area. The blocking layer allows transmission of the ultrasonic emission from another portion of the front surface area defining an active area, and includes a thin sheet of polymer blocking material patterned for covering the inactive area of the front surface. The blocking material is attached to the front surface of the transducer element, embedded within an acoustic lens, or incorporated into an adapter which attaches to the body of the transducer. The thin sheet of blocking material is patterned as sawteeth aligned in opposite rows and pointing toward a midline of the transducer. The sawteeth are uniformly shaped and spaced, and positioned anti-symmetric, or the sawteeth are pseudo-randomly shaped and spaced. Alternatively, the thin sheet of blocking material is patterned as a grid of pseudo-randomly selected blocking areas.
摘要翻译：用于对靶进行成像的超声波换能器具有用于朝向靶发射超声波的压电换能器元件和由薄片声阻挡层形成的变迹器。超声声阻挡层被放置在换能器的前表面和靶之间，用于基本上阻挡来自限定非活动区域的前表面区域的一部分的超声波发射。阻挡层允许从限定有源区域的前表面区域的另一部分传输超声波发射，并且包括被图案化以覆盖前表面的无效区域的聚合物阻挡材料薄片。阻挡材料附接到换能器元件的前表面，嵌入声透镜中，或者结合到连接到换能器主体的适配器中。阻挡材料的薄片被图案化为锯齿状物在相对的行中排列并指向换能器的中线。锯齿是均匀的形状和间隔的，并且被定位成反对称的，或者锯齿是伪随机的形状和间隔的。或者，将薄片的阻挡材料图案化为伪随机选择的阻挡区域的网格。

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