专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US06168564A Steerable transducer array for intracardial ultrasonic imaging 有权
标题翻译：用于心内超声成像的可导向换能器阵列
公开(公告)号：US06168564A
公开(公告)日：2001-01-02
申请号：US09165808
申请日：1998-10-02
申请人： Tat-Jin Teo
发明人： Tat-Jin Teo
IPC分类号： A61B800
CPC分类号： A61B8/12 , A61B8/00 , A61B8/4488 , G01S15/89 , G01S15/8918 , G10K11/346
摘要： In an ultrasonic imaging system, a transducer array structure, preferably a linear one-dimensional array on a catheter, is provided wherein the direction of a beam is controlled by a preselected, linear delay profile implementing a linear portion of a beam forming equation so that the array is effectively curved electronically. Beam forming is effected independently of the steering. An active aperture is provided by which a beam is steered according to linear array techniques. The active aperture comprises selected adjacent subsets of transducer elements of the array structure. The delay profile may be implemented by delay lines to each transducer element or by any preselected delay elements whereby the flatness or curvature of the array structure is matched and so that beam steering can be implemented by simple translation of the aperture along the transducer array. The pitch or separation between the transducer elements may be uniform or varied. Varied pitch permits sparser spacing of transducer elements along portions of the array structure. A quadratic portion of a beam forming equation is implemented in a beam former to control focus of the elements of the active aperture at each position of the active aperture.
摘要翻译：在超声成像系统中，提供换能器阵列结构，优选地在导管上的线性一维阵列，其中通过实现波束形成方程的线性部分的预选的线性延迟分布来控制波束的方向，使得该阵列有效地以电子方式弯曲。光束成形独立于转向而实现。提供了一种有源孔径，根据线性阵列技术，光束被转向。活动孔径包括阵列结构的换能器元件的选定相邻子集。延迟分布可以通过到每个换能器元件的延迟线或通过任何预先选择的延迟元件来实现，由此阵列结构的平坦度或曲率匹配，并且可以通过沿着换能器阵列的孔的简单平移来实现波束转向。换能器元件之间的间距或间距可以是均匀的或变化的。各种间距允许沿着阵列结构的部分更换传感器元件的间距。波束形成方程式的二次部分实现在波束形成器中，以控制有源孔径的各个元件在有源孔径的每个位置处的焦点。

32. 发明授权

US09271697B2 Ultrasound imaging with speckle suppression via direct rectification of signals 有权
标题翻译：通过直接整流信号的斑点抑制的超声成像
公开(公告)号：US09271697B2
公开(公告)日：2016-03-01
申请号：US12053088
申请日：2008-03-21
申请人： Tat-Jin Teo
发明人： Tat-Jin Teo
IPC分类号： A61B8/14 , G01S7/52 , G01S15/89
CPC分类号： A61B8/14 , G01S7/52077 , G01S15/8927
摘要： Described herein are systems and methods for suppressing speckle noise in ultrasound imaging. In an embodiment, speckle noise suppression is provided by incoherently summing echo waves that impinge the active aperture of the transducers. This incoherent summation prevents echo waves from destructively interfering and therefore prevents the signal ‘nulls’ that characterize speckle noise. In an exemplary embodiment, the incoherent summation is performed by sub-dividing a transducer into a plurality of smaller transducers and incoherently summing the electrical signals from the smaller transducers. In one exemplary embodiment, each of the smaller transducers is coupled to a separate rectifier, which rectifies the electrical signal from the respective transducer into a rectified signal. The rectified signals from the rectifiers are then summed to provide the incoherent summation.
摘要翻译：这里描述了用于抑制超声成像中的斑点噪声的系统和方法。在一个实施例中，散斑噪声抑制是通过对入射到换能器的有效孔径的回波进行非相干求和来提供的。这种非相干求和可以防止回波产生破坏性的干扰，从而防止表征斑点噪声的信号“零”。在示例性实施例中，通过将换能器分成多个较小的换能器并将来自较小换能器的电信号非相干地相加来进行非相干相加。在一个示例性实施例中，每个更小的换能器耦合到单独的整流器，其将来自相应换能器的电信号整流为整流信号。然后将来自整流器的整流信号相加以提供非相干求和。

33. 发明申请

US20080039733A1 SYSTEMS AND METHODS FOR CALIBRATION OF HEART SOUNDS 审中-公开
标题翻译：用于校准心脏声音的系统和方法
公开(公告)号：US20080039733A1
公开(公告)日：2008-02-14
申请号：US11762930
申请日：2007-06-14
申请人： Kamil Unver , Damon J. Coffman , Tat-Jin Teo , Arvind Thiagarajan
发明人： Kamil Unver , Damon J. Coffman , Tat-Jin Teo , Arvind Thiagarajan
IPC分类号： A61B5/02
CPC分类号： A61B7/04 , A61B5/02028 , A61B5/0408 , A61B7/00 , A61B8/06 , A61B8/488 , A61B2562/02 , A61B2562/0204 , A61B2562/046
摘要： An auscultation system includes a transducer for generating an acoustic signal at a transducing location of the subject, and a sensor for receiving an attenuated acoustic signal at a sensing location of the subject. The attenuated signal received at the sensing location is digitized, and may be analyzed in the frequency and/or time domain. The comparison of the digitized attenuated signal against the initial transduced signal allows for the computation of the degree of acoustic attenuation between the transducing and sensing locations. Acoustic attenuation may be utilized to generate an intensity ratio. The ejection fraction of the heart subject may then be computed by correlation to the intensity ratio. Pulse echo methods are also disclosed. The echo transducer is oriented on the subject and generates a series of signal pulses. The return echo on the pulse is then received and a brightness encoded image is produced. The return echo provides location data on the internal structures of the subject including location, motion and speed.
摘要翻译：听诊系统包括用于在受试者的转导位置处产生声学信号的换能器，以及用于在对象的感测位置接收衰减的声学信号的传感器。在感测位置处接收的衰减信号被数字化，并且可以在频域和/或时域中进行分析。数字化衰减信号与初始转换信号的比较允许计算传感和感测位置之间的声衰减程度。可以使用声衰减来产生强度比。然后可以通过与强度比的相关性来计算心脏受试者的射血分数。还公开了脉冲回波方法。回波传感器定向在被摄体上并产生一系列信号脉冲。然后接收脉冲上的返回回波并产生亮度编码图像。返回回波提供主体内部结构的位置数据，包括位置，运动和速度。

34. 发明申请

US20060247550A1 System and methods for gating heart signals 审中-公开
标题翻译：门控心脏信号的系统和方法
公开(公告)号：US20060247550A1
公开(公告)日：2006-11-02
申请号：US11377903
申请日：2006-03-16
申请人： Arvind Thiagarajan , Tat-Jin Teo , Damon Coffman
发明人： Arvind Thiagarajan , Tat-Jin Teo , Damon Coffman
IPC分类号： A61B5/02 , A61B5/05
CPC分类号： A61B7/04 , A61B5/7285 , A61B6/541
摘要： A heart gating system in which the heart sounds are used to generate the acquisition trigger signals. This is possible because the various heart sound components have characteristics in the temporal domain to allow for distinguishing the S1's and S2's. Hence, the individual heart sound components can be temporally distinguished and gating signals can be generated based on the identified heart sounds such as the S2 heart sound. In addition, S1 also has a frequency spectrum different from that of S2. Hence, in another embodiment of the invention, the frequency characteristics of the heart sounds can be used to distinguish S1 from S2. The combined temporal and frequency characteristics of the heart sounds can also be used to distinguish S1 from S2. In addition, detecting carotid pulses and/or changes in thoracic cavity can also used to better distinguish between S1 and S2.
摘要翻译：心脏门控系统，其中心脏声音用于产生采集触发信号。这是可能的，因为各种心音组件在时域上具有特征，以便区分S1和S2。因此，可以在时间上区分各个心音组件，并且可以基于所识别的心音如S2心音来产生门控信号。另外，S1也具有与S2不同的频谱。因此，在本发明的另一实施例中，可以使用心音的频率特性来区分S1和S2。心音的组合时间和频率特性也可用于区分S1和S2。此外，检测颈动脉脉冲和/或胸腔变化也可用于更好地区分S1和S2。

35. 发明申请

US20060241469A1 Systems and methods for estimating the length and position of a stent to be applied within a patient 有权
标题翻译：用于估计在患者体内应用的支架的长度和位置的系统和方法
公开(公告)号：US20060241469A1
公开(公告)日：2006-10-26
申请号：US11069206
申请日：2005-02-28
申请人： Michael Rold , Shashidhar Sathyanarayana , Tat-Jin Teo
发明人： Michael Rold , Shashidhar Sathyanarayana , Tat-Jin Teo
IPC分类号： A61B5/05
CPC分类号： A61B8/463 , A61B8/12
摘要： The field of the invention relates to medical imaging systems, and more particularly to systems and methods for estimating the size and position of a stent or other medical device within a patient. In one embodiment, a medical imaging system includes an elongated tubular member having distal and proximal ends, configured to be inserted into a vessel of a patient, an imaging device coupled to the distal end of the elongated tubular member and configured to emit one or more energy pulses and receive one or more echo signals, and a console electrically coupled to the imaging device, wherein the console includes a computer-usable medium, electrically coupled to the imaging device, having a sequence of instructions which, when executed by a processor, causes said processor to execute a process including generating an image of the vessel, and providing a graphical representation of a stent to be overlaid onto the image.
摘要翻译：本发明的领域涉及医学成像系统，更具体地涉及用于估计患者内的支架或其他医疗装置的尺寸和位置的系统和方法。在一个实施例中，医疗成像系统包括具有远端和近端的细长管状构件，构造成插入患者容器中;成像装置，其联接到细长管状构件的远端并且构造成发射一个或多个能量脉冲并接收一个或多个回波信号，以及控制台，其电耦合到所述成像装置，其中所述控制台包括电耦合到所述成像装置的计算机可用介质，所述计算机可用介质具有指令序列，当由处理器执行时，使得所述处理器执行包括生成血管图像的过程，以及提供要覆盖在图像上的支架的图形表示。

36. 发明授权

US5921934A Methods and apparatus for non-uniform rotation distortion detection in an intravascular ultrasound imaging system 失效
公开(公告)号：US5921934A
公开(公告)日：1999-07-13
申请号：US977543
申请日：1997-11-25
申请人： Tat-Jin Teo
发明人： Tat-Jin Teo
IPC分类号： A61B8/00 , A61B8/12 , G01S7/52 , G01S15/89
CPC分类号： A61B8/481 , A61B8/12 , A61B8/4461 , G01S15/894 , G01S7/5205
摘要： Methods and apparatus for non-uniform rotation distortion detection for enhanced intravascular ultrasound imaging. The present invention provides methods and apparatus which detect non-uniform rotation in an improved manner without using beacons which may create shadowing of tissue behind the beacons or other undesired artifacts in the image. In specific embodiments, the present invention may provide a particularly simple and useful solution for addressing the problem of non-uniform rotation distortion in intravascular ultrasound imaging in systems which use mechanical scanning. In specific embodiments, the present invention utilizes correlation of received signals in an image vector from reverberating ultrasound in a bubbly liquid-flushed catheter to determine non-uniform rotation of the transducer within the catheter. In other embodiments, the present invention utilizes correlation of imaging vectors within a blood speckle region given a particular beamwidth of ultrasound energy from a transducer to determine non-uniform rotation of the transducer.

37. 发明授权

US5911221A Static scanhead switching along elevation for forming ultrasound beam line 失效
标题翻译：静电扫描头沿高程切换形成超声波束线
公开(公告)号：US5911221A
公开(公告)日：1999-06-15
申请号：US671323
申请日：1996-06-25
申请人： Tat-Jin Teo
发明人： Tat-Jin Teo
IPC分类号： A61B8/14 , G01S15/89 , A61B8/00
CPC分类号： G01S15/8925 , G01S7/52085 , A61B8/14
摘要： A static switching scheme along transducer elevation for obtaining beam line from multiple firings. Between firings for an associated beam line the elevation aperture is changed depending upon the image plane focus depth. For a single image plane focus beyond a deepest break point, a widest elevation aperture is used during one firing. During other firings for the beam line the elevation aperture is narrowed. Each of multiple break points separate a distinct depth region. Echo data for a beam line includes echo data from one firing for one region and from another firing for another region. Echo data from multiple firings is blended in vicinity of region boundaries. For multiple image plane foci applications, the elevation aperture for a given firing is determined by the target image plane focus for such firing.
摘要翻译：沿着传感器仰角的静态切换方案，用于从多次发射获得束线。在相关联的束线的发射之间，取决于图像平面焦点深度来改变仰角孔。对于超过最深断点的单个图像平面焦点，在一次点火期间使用最宽的仰角孔。在射束线的其他发射期间，仰角孔径变窄。多个断点中的每一个分开独特的深度区域。波束线的回波数据包括来自一个区域的一次点火的回波数据和另一个区域的另一个射击的回波数据。来自多个发射的回波数据在区域边界附近混合。对于多个图像平面焦点应用，给定点火的仰角孔由这种点火的目标图像平面焦点确定。

38. 发明授权

US5575290A Coarse-fine ultrasound transducer array for medical imaging 失效
标题翻译：用于医学成像的粗细超声换能器阵列
公开(公告)号：US5575290A
公开(公告)日：1996-11-19
申请号：US497627
申请日：1995-06-30
申请人： Tat-Jin Teo , John R. Klepper
发明人： Tat-Jin Teo , John R. Klepper
IPC分类号： G01S15/89 , G10K11/34 , A61B8/00
CPC分类号： G01S15/8925 , G10K11/34 , G01S15/8913
摘要： The ultrasound transducer array defines an average row spacing along the elevation for receiving transducer elements that differs from an average row spacing along the elevation for transmitting transducer elements. In one embodiment a relatively "coarse" row spacing is used for reception and a relatively "fine" row spacing is used for transmission. The differing spacings lead to different transmit-elevation and receive-elevation beam-patterns. In one configuration the number of transducer elements, and correspondingly the number of ultrasound processing channels, is reduced. In an alternative configuration the beam-pattern "footprint" is increased without increasing the number of transducer elements or processing channels. The array includes dedicated transmit-only elements and/or dedicated receive-only elements, together with coincident, time-shared transmit/receive elements. The coarse-fine spacings enable improved elevational focus without substantially increasing side lobe levels in a focal plane and far field portion of a resulting beam-pattern.
摘要翻译：超声换能器阵列定义沿着仰角的平均行距，用于接收换能器元件，其不同于沿着仰角的平均行间距，用于发射换能器元件。在一个实施例中，相对“粗”行间距用于接收，并且相对“精细”的行间隔用于传输。不同的间距导致不同的透射仰角和接收仰角波束图案。在一种配置中，减少了换能器元件的数量，并且相应地减少了超声波处理通道的数量。在替代配置中，波束图案“覆盖区”增加而不增加换能器元件或处理通道的数量。该阵列包括专用的仅发送元件和/或专用的仅接收元件，以及重合的时间共享的发送/接收元件。粗细间距使得能够改善高程聚焦，而不会在所得到的波束图案的焦平面和远场部分中基本上增加旁瓣电平。

39. 发明授权

US09579030B2 Percutaneous devices and methods to visualize, target and ablate nerves 有权
标题翻译：经皮装置和方法可视化，瞄准和消融神经
公开(公告)号：US09579030B2
公开(公告)日：2017-02-28
申请号：US13554391
申请日：2012-07-20
申请人： Torsten Scheuermann , Tat-Jin Teo , Roger N. Hastings
发明人： Torsten Scheuermann , Tat-Jin Teo , Roger N. Hastings
IPC分类号： A61B5/05 , A61B5/04 , A61N7/02 , A61B5/00 , A61B5/01 , A61B5/20 , A61B18/00 , A61B8/00 , A61N7/00 , A61N1/40 , A61B18/26
CPC分类号： A61N7/02 , A61B5/0071 , A61B5/0095 , A61B5/01 , A61B5/04001 , A61B5/201 , A61B5/4029 , A61B8/4461 , A61B18/02 , A61B18/1492 , A61B18/24 , A61B18/26 , A61B2018/00023 , A61B2018/00214 , A61B2018/0022 , A61B2018/00285 , A61B2018/00386 , A61B2018/00404 , A61B2018/00494 , A61B2018/00511 , A61B2018/00577 , A61B2018/00791 , A61B2090/3966 , A61N1/403 , A61N7/00 , A61N2007/003 , A61N2007/0082 , A61N2007/0091
摘要： Apparatuses for identifying nerve tissue and methods for making and using the same are disclosed. An example apparatus may include an elongate shaft having a distal region configured to be percutaneously deployed within a patient. An active imaging structure may be disposed on the distal region. The active imaging structure may be configured to remotely image nerve tissue by exciting a signal in nerve tissue from a percutaneous location and receiving the signal from a percutaneous location. The active imaging structure may include one or more probes.
摘要翻译：公开了用于鉴定神经组织的装置及其制造和使用方法。示例性装置可以包括细长轴，其具有构造成经皮部署在患者体内的远侧区域。主动成像结构可以设置在远侧区域上。活动成像结构可以被配置为通过从经皮位置激发神经组织中的信号并从经皮位置接收信号来远程地图像神经组织。主动成像结构可以包括一个或多个探针。

40. 发明授权

US08529455B2 Systems and methods for estimating the size and position of a medical device to be applied within a patient 有权
标题翻译：用于估计应用于患者体内的医疗装置的尺寸和位置的系统和方法
公开(公告)号：US08529455B2
公开(公告)日：2013-09-10
申请号：US13227337
申请日：2011-09-07
申请人： Michael D. Rold , Shashidhar Sathyanarayana , Tat-Jin Teo
发明人： Michael D. Rold , Shashidhar Sathyanarayana , Tat-Jin Teo
IPC分类号： A61B8/00
CPC分类号： A61B8/463 , A61B8/12
摘要： The field of the invention relates to medical imaging systems, and more particularly to systems and methods for estimating the size and position of a stent or other medical device within a patient. In one embodiment, a medical imaging system includes an elongated tubular member having distal and proximal ends, configured to be inserted into a vessel of a patient, an imaging device coupled to the distal end of the elongated tubular member, and a console electrically coupled to the imaging device, wherein the console includes a computer-usable medium, electrically coupled to the imaging device, having a sequence of instructions which, when executed by a processor, causes said processor to execute a process including generating an image of the vessel, and overlay one or more shapes onto the image age to provide a visual approximation of the size and position of a medical device to be applied within the patient.
摘要翻译：本发明的领域涉及医学成像系统，更具体地涉及用于估计患者内的支架或其他医疗装置的尺寸和位置的系统和方法。在一个实施例中，医学成像系统包括具有远端和近端的细长管状构件，构造成插入患者容器中，耦合到细长管状构件的远端的成像装置和电耦合到成像装置，其中所述控制台包括电耦合到所述成像装置的计算机可用介质，所述计算机可用介质具有指令序列，所述指令序列在由处理器执行时使所述处理器执行包括生成所述容器的图像的处理，以及将一个或多个形状覆盖到图像时代上以提供将要施加在患者体内的医疗装置的尺寸和位置的视觉近似。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式