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    • 7. 发明申请
    • IMPLANTABLE MEDICAL LEADS AND SYSTEMS THAT UTILIZE REFLECTION POINTS TO CONTROL INDUCED RADIO FREQUENCY ENERGY
    • 使用反射点控制诱发无线电频率的可植入医疗领域和系统
    • WO2012103419A3
    • 2013-01-10
    • PCT/US2012022868
    • 2012-01-27
    • MEDTRONIC INCWAHLSTRAND CARL DHOEGH THOMAS B
    • WAHLSTRAND CARL DHOEGH THOMAS B
    • A61N1/05A61N1/08
    • A61N1/08A61N1/05A61N1/086
    • Implantable medical leads and systems utilize reflection points within the lead to control radio frequency current that has been induced onto one or more filars. The radio frequency current may be controlled by the reflection points to block at least some of the radio frequency current from reaching an electrode of the lead and to dissipate at least some of the radio frequency current as heat on the filar. Controlling the radio frequency current thereby reduces the amount that is dissipated into bodily tissue through one or more electrodes of the lead and reduces the likelihood of tissue damage. The reflection points may be created by physical changes such as to material or size in the filar and/or in insulation layers that may be present such as an inner jacket about the filar and an outer jacket formed by the body of the lead.
    • 植入式医疗引线和系统利用引线内的反射点来控制已被诱导到一个或多个丝状体上的射频电流。 射频电流可以由反射点控制,以阻止射频电流中的至少一些到达引线的电极,并将至少一些射频电流作为热丝散布在丝状体上。 控制射频电流从而减少通过引线的一个或多个电极消散到身体组织中的量,并减少了组织损伤的可能性。 反射点可以通过物理变化产生,例如在丝状物和/或可能存在的绝缘层中的材料或尺寸,例如围绕丝状物的内护套和由引线主体形成的外护套。