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    • 8. 发明授权
    • Methods and devices for improving blood flow to a heart of a patient
    • 用于改善患者心脏的血流的方法和装置
    • US5989274A
    • 1999-11-23
    • US770319
    • 1996-12-20
    • Thomas W. DavisonStephen DiMatteo
    • Thomas W. DavisonStephen DiMatteo
    • A61B18/00A61B17/00A61B17/32
    • A61B17/320068A61B2017/00247A61B2017/320072A61B2018/00392
    • One device in accordance with the present invention includes a surgical device for creating channels in tissue of a patient. The device includes a catheter defining a lumen and a transducer assembly carried by the catheter along a lengthwise dimension of the catheter. An end effector is operatively coupled to the transducer assembly and extends distally relative to the transducer assembly. The end effector has a vibrating channel-forming tip wherein the channel-forming tip is adapted to create channels in the heart of a patient. A method in accordance with the present invention includes the steps of inserting an end effector having a tip into a patient, placing the tip of the end effector in direct contact with a surface of the heart, energizing the end effector to cause the tip to vibrate, piercing through the surface of the heart with the tip to create a channel, and removing the end effector.
    • 根据本发明的一个装置包括用于在患者的组织中产生通道的外科装置。 该装置包括限定内腔的导管和由导管沿导管的纵向尺寸承载的换能器组件。 端部执行器可操作地耦合到换能器组件并相对于换能器组件向远侧延伸。 末端执行器具有振动通道形成末端,其中通道形成末端适于在患者的心脏中产生通道。 根据本发明的方法包括以下步骤:将具有尖端的末端执行器插入患者体内,使末端执行器的末端与心脏的表面直接接触,激励末端执行器以使尖端振动 用尖端穿过心脏表面以形成通道,并且移除末端执行器。