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公开(公告)号：US5776176A
公开(公告)日：1998-07-07
申请号：US672505
申请日：1996-06-17
申请人： Eric N. Rudie
发明人： Eric N. Rudie
CPC分类号： A61B18/18 , A61B18/1815
摘要： A microwave antenna is insertable into a cardiovascular catheter and is formed from a coaxial cable including an inner conductor and an inner insulator with the inner insulator having a reduced diameter portion adjacent a distal end of the catheter. An antenna coil portion of the microwave antenna is disposed about the reduced diameter portion and has a first section, a second section, and a point intermediate to the first and second sections. The intermediate point is electrically connected to an outer conductor of the coaxial cable. An impedance matching means is connected to the inner conductor and to the second section of the antenna coil portion.
摘要翻译： 微波天线可插入心血管导管中，并由包括内导体和内绝缘体的同轴电缆形成，内绝缘体具有邻近导管远端的直径减小的部分。 微波天线的天线线圈部分围绕减径部分设置，并且具有第一部分，第二部分和中间到第一和第二部分的点。 中间点电连接到同轴电缆的外导体。 阻抗匹配装置连接到天线线圈部分的内导体和第二部分。
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公开(公告)号：US06496737B2
公开(公告)日：2002-12-17
申请号：US09733109
申请日：2000-12-08
申请人： Eric N. Rudie , Scott Stockmoe , Aaron Hjelle , Bruce W. Ebner , Joel Crabb , Jonathan L. Flachman , Stan Kluge , Satish Ramadhyani , Bruce Neilson
发明人： Eric N. Rudie , Scott Stockmoe , Aaron Hjelle , Bruce W. Ebner , Joel Crabb , Jonathan L. Flachman , Stan Kluge , Satish Ramadhyani , Bruce Neilson
IPC分类号： A61F200
CPC分类号： A61B18/1815 , A61B18/18 , A61B2017/00057 , A61B2017/00084 , A61B2017/00274 , A61B2017/22055 , A61B2018/00023 , A61B2018/00547
摘要： A thermal therapy catheter includes a catheter shaft having an outer surface that is insertable into the body lumen. The catheter shaft carries an energy-emitting element. A multi-lobe balloon is positioned around the outer surface of the catheter shaft adjacent to the energy-emitting element, with opposing ends of the multi-lobe balloon being sealingly connected to the catheter shaft to form a chamber between the multi-lobe balloon and the outer surface of the catheter shaft. Fluid is circulated between the outer surface of the catheter shaft and the multi-lobe balloon in a defined fluid flow path to firmly contact the wall of the body lumen and thereby cool the body lumen tissue while thermally treating targeted tissue at a depth from the body lumen wall.
摘要翻译： 热疗导管包括具有可插入体腔的外表面的导管轴。 导管轴带有能量发射元件。 多瓣球囊围绕导管轴的外表面定位在邻近能量发射元件的位置，多瓣球囊的相对端被密封地连接到导管轴上，以在多瓣球囊和 导管轴的外表面。 流体在导管轴的外表面和限定的流体流动路径中的多瓣球囊之间循环，以牢固地接触体腔壁，从而冷却体腔组织，同时在与身体深度相对的位置热处理靶组织 管腔壁。
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23.发明授权Microwave energy delivery system including high performance dual directional coupler for precisely measuring forward and reverse microwave power during thermal therapy 有权微波能量传输系统包括高性能双向耦合器，用于在热疗期间精确测量正向和反向微波功率
公开(公告)号：US06067475A
公开(公告)日：2000-05-23
申请号：US186795
申请日：1998-11-05
申请人： Kenneth L. Graves , Eric N. Rudie
发明人： Kenneth L. Graves , Eric N. Rudie
CPC分类号： A61B18/1815 , A61B18/18 , A61B2017/00274 , A61B2018/00547
摘要： A microwave energy delivery system for microwave thermal therapy includes an antenna and a transmission line connected to the antenna. A microwave generating source includes a generator connected to the transmission line and a dual directional coupler for detecting forward power delivered to the antenna and reverse power reflected from the antenna with low uncertainty.
摘要翻译： 用于微波热治疗的微波能量递送系统包括天线和连接到天线的传输线。 微波发生源包括连接到传输线的发生器和用于检测传送到天线的正向功率并且具有低不确定性的从天线反射的反向功率的双向耦合器。
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公开(公告)号：US6032078A
公开(公告)日：2000-02-29
申请号：US955895
申请日：1997-10-22
申请人： Eric N. Rudie
发明人： Eric N. Rudie
CPC分类号： A61B18/18 , A61B18/1815
摘要： A catheter shaft carries a coaxial cable, the terminal end of which contains a dipole antenna with opposing first and second helical elements. The first and second helical elements originate from a common connection to an outer conductor of the coaxial cable. The first and second helical elements are formed by winding flat wire around an outer insulator of the coaxial cable near a terminal end of the coaxial cable. A variable, controllable impedance is connected between an inner conductor of the coaxial cable and a point on the second helical element where the resistive component of the antenna's impedance matches the characteristic impedance of the coaxial cable. The impedance match minimizes reflective losses of the antenna, thereby maximizing power transferred to the antenna. The antenna has an effective electrical length which is equal to one-half the wavelength of the radiation emitted, independent of the physical length of the antenna. The antenna also has a radiation length which can be adjusted by varying the number in pitch and turns of the flat wire and the location of the impedance matching point.
摘要翻译： 导管轴携带同轴电缆，其同轴电缆的末端包含具有相对的第一和第二螺旋元件的偶极天线。 第一和第二螺旋元件源自与同轴电缆的外部导体的公共连接。 第一和第二螺旋元件通过在同轴电缆的末端附近绕着同轴电缆的外绝缘体缠绕扁线而形成。 可变的可控阻抗连接在同轴电缆的内部导体和第二螺旋元件上的点之间，其中天线阻抗的电阻分量与同轴电缆的特性阻抗匹配。 阻抗匹配使天线的反射损耗最小化，从而最大化传输到天线的功率。 天线具有等于辐射的波长的一半的有效电长度，与天线的物理长度无关。 天线还具有可以通过改变扁平线的间距和匝数以及阻抗匹配点的位置来调节的辐射长度。
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公开(公告)号：US5987360A
公开(公告)日：1999-11-16
申请号：US808007
申请日：1997-03-03
申请人： Jonathan R. McGrath , Eric N. Rudie
发明人： Jonathan R. McGrath , Eric N. Rudie
CPC分类号： A61B18/1815 , A61B18/18 , A61B2017/00101 , A61B2017/00274 , A61B2018/00023 , A61B2018/00547 , A61B2018/1861
摘要： A device for prostate treatment is inserted into a prostatic portion of an urethra and connected to an energy source. Energy is delivered to the prostate from the device. The amount of energy emitted to prostatic tissue adjacent to a bladder is greater than that emitted to prostatic tissue distant from the bladder.
摘要翻译： 将用于前列腺治疗的装置插入尿道的前列腺部分并连接到能量源。 能量从装置输送到前列腺。 发射到邻近膀胱的前列腺组织的能量大于远离膀胱的前列腺组织的能量。
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公开(公告)号：US5938692A
公开(公告)日：1999-08-17
申请号：US621634
申请日：1996-03-26
申请人： Eric N. Rudie
发明人： Eric N. Rudie
CPC分类号： A61B18/18 , A61B18/1815
摘要： A catheter shaft carries a coaxial cable, the terminal end of which contains a dipole antenna with opposing first and second helical elements. The first and second helical elements originate from a common connection to an outer conductor of the coaxial cable. The first and second helical elements are formed by winding flat wire around an outer insulator of the coaxial cable near a terminal end of the coaxial cable. A variable, controllable impedance is connected between an inner conductor of the coaxial cable and a point on the second helical element where the resistive component of the antenna's impedance matches the characteristic impedance of the coaxial cable. The impedance match minimizes reflective losses of the antenna, thereby maximizing power transferred to the antenna. The antenna has an effective electrical length which is equal to one-half the wavelength of the radiation emitted, independent of the physical length of the antenna. The antenna also has a radiation length which can be adjusted by varying the number in pitch and turns of the flat wire and the location of the impedance matching point.
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公开(公告)号：US5300099A
公开(公告)日：1994-04-05
申请号：US847915
申请日：1992-03-06
申请人： Eric N. Rudie
发明人： Eric N. Rudie
CPC分类号： A61N5/02 , A61B18/18 , A61B18/1815 , A61B2018/00523
摘要： A catheter shaft carries a coaxial cable, the terminal end of which contains a dipole antenna with opposing first and second helical elements. The first and second helical elements originate from a common connection to an outer conductor of the coaxial cable. The first and second helical elements are formed by winding flat wire around an outer insulator of the coaxial cable near a terminal end of the coaxial cable. A series capacitance is connected between an inner conductor of the coaxial cable and a point on the second helical element where the resistive component of the antenna's impedance matches the characteristic impedance of the coaxial cable. This match minimizes reflective losses of the antenna, thereby maximizing power transfer to the antenna. The antenna has an effective electrical length which is equal to one half the wavelength of the radiation emitted, independent of the physical length of the antenna. The antenna also has a radiation length which can be adjusted by varying the number and pitch of turns of the flat wire and the location of the impedance matching point. The microwave radiation emitted by the antenna is capable of generating a desired thermal pattern in biological tissue, within which temperatures are capable of exceeding 45.degree. C.
摘要翻译： 导管轴携带同轴电缆，其同轴电缆的末端包含具有相对的第一和第二螺旋元件的偶极天线。 第一和第二螺旋元件源自与同轴电缆的外部导体的公共连接。 第一和第二螺旋元件通过在同轴电缆的末端附近绕着同轴电缆的外绝缘体缠绕扁线而形成。 串联电容连接在同轴电缆的内导体和第二螺旋元件上的点之间，其中天线阻抗的电阻分量与同轴电缆的特性阻抗匹配。 该匹配使天线的反射损耗最小化，从而最大化对天线的功率传输。 天线具有等于辐射发射波长的一半的有效电长度，与天线的物理长度无关。 该天线还具有可以通过改变扁平线的匝数和间距以及阻抗匹配点的位置来调整的辐射长度。 由天线发射的微波辐射能够在生物组织中产生期望的热图，其中温度可以超过45摄氏度。
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