-
公开(公告)号：US20210275806A1
公开(公告)日：2021-09-09
申请号：US17227924
申请日：2021-04-12
Inventor： Saurav Paul , Troy T. Tegg , Israel A, Byrd , Riki Thao , Harry A. Puryear , Linda Nemec
Abstract: Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.
-
公开(公告)号：US09962184B2
公开(公告)日：2018-05-08
申请号：US14551256
申请日：2014-11-24
Inventor： Saurav Paul , Todd R. Stangenes , Reed R. Heimbecher
CPC classification number: A61B17/3403 , A61B17/3478 , A61B17/3498 , A61B2017/00243 , A61B2017/3405 , A61M29/00
Abstract: A transseptal medical device is provided including a dilator, a needle, and a needle control mechanism. The needle may be disposed within the dilator, and the needle control mechanism may be operably connected to a proximal end of the needle or the dilator for selective adjustment of the distal end of the needle from a first position within the dilator to a second position external to the dilator. The needle control mechanism may include an actuator configured for rotation within the dilator in one embodiment. In another embodiment, the proximal end of the dilator may incorporate internal threads and the proximal end of the needle may incorporate external threads, such that the needle may be configured for rotation during selective adjustment of the distal end of the needle from a first position to a second position. A method for puncturing a septum of a heart is also disclosed.
-
公开(公告)号：US20170303997A1
公开(公告)日：2017-10-26
申请号：US15589652
申请日：2017-05-08
Inventor： Saurav Paul , Troy T. Tegg , Reed R. Heimbecher , Richard E. Stehr
CPC classification number: A61B18/1492 , A61B5/055 , A61B5/06 , A61B2018/00702 , A61B2018/00791 , A61B2018/00815 , A61B2034/2068 , A61B2090/374 , A61B2090/3954
Abstract: An electrode for use on a medical device is disclosed. The electrode may have a main body of electrically conductive material extending along an axis and may have a proximal end and a distal end. The electrode may also include a magnetic resonance imaging (MRI) tracking coil disposed in the body. The MRI tracking coil may comprise electrically insulated wire. A catheter including an electrode, as well as a method for determining the location of an electrode, are also disclosed.
-
公开(公告)号：US09730750B2
公开(公告)日：2017-08-15
申请号：US14254324
申请日：2014-04-16
Inventor： Saurav Paul , Hong Cao
CPC classification number: A61B18/1233 , A61B18/1206 , A61B18/1492 , A61B2018/00678 , A61B2018/00702 , A61B2018/00779 , A61B2018/00791 , A61B2018/00827 , A61B2018/00869 , A61B2018/00892 , A61B2090/065
Abstract: Disclosed herein are ablation systems and methods for providing feedback on lesion formation in real-time. The methods and systems assess absorptivity of tissue based on a degree of electric coupling or contact between an ablation electrode and the tissue. The absorptivity can then be used, along with other information, including, power levels and activation times, to provide real-time feedback on the lesions being created. Feedback may be provided, for example, in the form of estimated lesion volumes and other lesion characteristics. The methods and systems can provide estimated treatment times to achieve a desired lesion characteristic for a given degree of contact, as well as depth of a lesion being created. The degree of contact may be measured using different techniques, including the phase angle techniques and a coupling index.
-
公开(公告)号：US20140228713A1
公开(公告)日：2014-08-14
申请号：US14151273
申请日：2014-01-09
Inventor： Chou Thao , Saurav Paul
CPC classification number: A61B5/4848 , A61B18/14 , A61B18/1492 , A61B2018/00351 , A61B2018/00577 , A61B2018/0066 , A61B2018/00839 , A61B2018/143 , A61B2090/065
Abstract: Systems and methods are disclosed for assessing tissue contact, e.g., for mapping, tissue ablation, or other procedures. An exemplary tissue contact sensing system comprises a flexible tip device. At least one piezoelectric sensor is housed within the flexible tip device. The at least one piezoelectric sensor is responsive to contact stress of the flexible tip device by generating electrical signals corresponding to the amount of contact stress. An output device is electrically connected to the at least one piezoelectric sensor. The output device receives the electrical signals for assessing tissue contact by the flexible tip device. Methods for assembling and using the flexible tip device are also disclosed.
Abstract translation: 公开了用于评估组织接触的系统和方法，例如用于映射，组织消融或其它程序。 示例性组织接触感测系统包括柔性尖端装置。 至少一个压电传感器容纳在柔性尖端装置内。 至少一个压电传感器通过产生对应于接触应力量的电信号来响应柔性尖端装置的接触应力。 输出装置电连接到至少一个压电传感器。 输出装置接收用于评估柔性尖端装置的组织接触的电信号。 还公开了用于组装和使用柔性末端装置的方法。
-
Patent Agency Ranking
公开(公告)号：US20140194867A1
公开(公告)日：2014-07-10
申请号：US14087991
申请日：2013-11-22
Inventor： Jeffrey M. Fish , Israel A. Byrd , Lynn E. Clark , Jeremy D. Dando , Christopher J. Geurkink , Harry A. Puryear , Saurav Paul
CPC classification number: A61B18/1492 , A61B5/0084 , A61B5/01 , A61B5/0402 , A61B5/042 , A61B5/0538 , A61B5/1076 , A61B5/1079 , A61B5/4836 , A61B5/742 , A61B18/1233 , A61B18/14 , A61B2018/00178 , A61B2018/00351 , A61B2018/00714 , A61B2018/00738 , A61B2018/00779 , A61B2018/00875 , A61B2018/0212 , A61B2034/301 , A61B2090/065 , A61B2218/002
Abstract: A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ECU) configured to acquire magnitudes for a component of a complex impedance between an electrode and tissue, and the power applied to the tissue during lesion formation. The ECU is configured to calculate a value responsive to the complex impedance component and the power. The value is indicative of a predicted lesion depth, a likelihood the lesion has reached a predetermined depth, or a predicted tissue temperature. The method includes acquiring magnitudes for a component of a complex impedance between an electrode and tissue and the power applied during lesion formation. The method includes calculating a value responsive to the complex impedance component and the power, the value being indicative of a predicted lesion depth, a likelihood the lesion has reached a predetermined depth, and/or a predicted tissue temperature.
Abstract translation: 提供了一种用于评估组织中病变形成的方法和系统。 该系统包括电子控制单元（ECU），其被配置为获取电极和组织之间的复阻抗的分量的大小以及在损伤形成期间施加到组织的功率。 ECU被配置为计算响应于复阻抗分量和功率的值。 该值表示预测的病变深度，病变达到预定深度的可能性，或预测的组织温度。 该方法包括获取电极和组织之间的复阻抗的分量的大小以及在损伤形成期间施加的功率。 该方法包括计算响应于复阻抗分量和功率的值，该值指示预测的病变深度，病变达到预定深度的可能性和/或预测的组织温度。
-
公开(公告)号：US20140066926A1
公开(公告)日：2014-03-06
申请号：US14076400
申请日：2013-11-11
Inventor： Saurav Paul , Riki Chou Thao , Hong Cao , Kedar Ravindra Belhe
IPC: A61B18/14
CPC classification number: A61B18/14 , A61B18/16 , A61B2018/00577 , A61N1/0464 , A61N1/05
Abstract: An electrode head is disclosed that utilizes electrically conductive or dissipative fabric to exchange electrical energy with tissue. This electrode head may be used for any appropriate application, such as a catheter electrode, a return electrode, or the like. Any appropriate function may be provided by this electrode head, such as tissue ablation, tissue mapping, or providing an electrical ground.
Abstract translation: 公开了一种使用导电或耗散织物以与组织交换电能的电极头。 该电极头可用于任何适当的应用，例如导管电极，返回电极等。 可以通过该电极头提供任何适当的功能，例如组织消融，组织贴图或提供电接地。
-
公开(公告)号：US20140046194A1
公开(公告)日：2014-02-13
申请号：US13961435
申请日：2013-08-07
Inventor： Arthur G. Erdman , Saurav Paul , Troy T. Tegg
CPC classification number: A61M39/10 , A61B5/0084 , A61B5/065 , A61B5/1076 , A61B5/6852 , A61B5/6885 , A61B18/1492 , A61B18/24 , A61B2017/00057 , A61B2017/00084 , A61B2090/065 , A61M25/0043 , A61M25/0068 , A61M25/0069 , A61M25/007 , A61M25/0071 , A61M25/0074 , A61M25/01 , A61M25/0138 , A61M25/0141 , A61M2025/0002
Abstract: Coupler assemblies and methods are disclosed as the coupler assemblies may be used with a catheter. An exemplary coupler assembly includes a spherical linkage coupler for a catheter. The coupler comprises a first cylinder portion for connecting to a structure, and a second cylinder portion for connecting to a distal end of a body of the catheter. The coupler also comprises a spherical linkage including at least two link arms. Each of the two link arms are connected on one end to the first cylinder portion and on the other end to the second cylinder portion. The two link arms connect a portion of the structure to the distal end of the catheter and enable the structure to move relative to the distal end of the catheter in response to an external force exerted on the structure.
Abstract translation: 公开了耦合器组件和方法，因为耦合器组件可以与导管一起使用。 示例性联接器组件包括用于导管的球形联动联接器。 联接器包括用于连接到结构的第一气缸部分和用于连接到导管主体的远端的第二气缸部分。 耦合器还包括包括至少两个连杆臂的球形连杆。 两个连杆臂中的每一个在一端连接到第一气缸部分，另一端连接到第二气缸部分。 两个连杆臂将结构的一部分连接到导管的远端，并使结构能够响应于施加在结构上的外力而相对于导管的远端移动。
-
公开(公告)号：US11000684B2
公开(公告)日：2021-05-11
申请号：US15931240
申请日：2020-05-13
Inventor： Saurav Paul , Troy T. Tegg , Israel A. Byrd , Riki Thao , Harry A. Puryear , Linda Nemec
Abstract: Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.
-
公开(公告)号：US10687891B2
公开(公告)日：2020-06-23
申请号：US15404844
申请日：2017-01-12
Inventor： Kedar Ravindra Belhe , Saurav Paul
Abstract: A catheter assembly for assessing contact between the catheter assembly and tissue is disclosed. The assembly includes a catheter shaft and a pressure sensitive conductive composite member whose electrical resistance varies with pressure applied to the catheter assembly. The assembly also includes at least one measurement terminal to permit the measurement of changes in the electrical characteristics of the pressure sensitive conductive composite member. The assembly may optionally include a measurement device to measure resistance, impedance and/or other electrical characteristics. The assembly may utilize a reference electrode secured to the patient's tissue, which permits the measurement device to measure changes between the reference electrode and the at least one measurement terminal. Optionally, the assembly may include a conductive outer layer. Also disclosed are sensor assemblies, contact sensor, methods of contact sensing, and methods of manufacturing relating to the use of pressure sensitive conductive composites.
-
-
-
-
-
-
-
-
-
Search Results
58
records
(took 0.026 seconds)
