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132 条记录 (耗时 0.036 秒)

    Vacuum coagulation probes
    91.
    发明授权
    Vacuum coagulation probes 有权

    公开(公告)号：US07063698B2

    公开(公告)日：2006-06-20

    申请号：US10425251

    申请日：2003-04-29

    申请人： James G Whayne ,  Sidney D. Fleischman

    发明人： James G Whayne ,  Sidney D. Fleischman

    IPC分类号： A61B18/18

    CPC分类号： A61B18/1492 ,  A61B2018/00029 ,  A61B2018/00077 ,  A61B2018/00291 ,  A61B2018/00351 ,  A61B2018/00363 ,  A61B2018/00577 ,  A61B2018/00613 ,  A61B2018/1435 ,  A61B2018/1465 ,  A61B2218/002 ,  A61B2218/007

    摘要： An embodiment of the invention includes a surgical device for coagulating soft tissue such as atrial tissue in the treatment of atrial fibrillation, atrial flutter, and atrial tachycardia; tendon or ligament shrinkage; or articular cartilage removal. The surgical device integrates a suction mechanism with the coagulation mechanism improving the lesion creation capabilities of the device. The surgical device comprises an elongate member having an insulative covering attached about conductive elements capable of coagulating soft tissue when radiofrequency or direct current energy is transmitted to the conductive elements. Openings through the insulative covering expose regions of the conductive elements and are coupled to lumens in the elongate member which are routed to a vacuum source. Suction causes the soft tissue to actively engage the opening thus the integrated, exposed conductive elements to facilitate the coagulation process and ensure the lesions created are consistent, continuous, and transmural. The embodiments of the invention can also incorporate cooling mechanisms associated with the conductive elements and coupled to a fluid source to passively transport fluid along the contacted soft tissue surface to cool thus pushing the maximum temperature deeper into tissue.

    Composite structures and methods for ablating tissue to form complex lesion patterns in the treatment of cardiac conditions and the like
    97.
    发明授权
    Composite structures and methods for ablating tissue to form complex lesion patterns in the treatment of cardiac conditions and the like 失效
    用于在治疗心脏病况等中烧蚀组织以形成复杂病变图案的复合结构和方法

    公开(公告)号：US07115122B1

    公开(公告)日：2006-10-03

    申请号：US09505354

    申请日：2000-02-16

    申请人： David K. Swanson ,  Sidney D. Fleischman ,  Thomas F. Kordis ,  David L. McGee

    发明人： David K. Swanson ,  Sidney D. Fleischman ,  Thomas F. Kordis ,  David L. McGee

    IPC分类号： A61B18/18 ,  A61B19/00

    CPC分类号： A61B18/1492 ,  A61B2017/003 ,  A61B2018/00083 ,  A61B2018/00196 ,  A61B2018/00214 ,  A61B2018/00267 ,  A61B2018/00577 ,  A61B2018/00839 ,  A61B2018/1437 ,  A61B2018/1467 ,  A61B2018/1497

    摘要： A method of ablating tissue in the heart to treat atrial fibrillation introduces into a selected atrium an energy emitting element. The method exposes the element to a region of the atrial wall and applies ablating energy to the element to thermally destroy tissue. The method forms a convoluted lesion pattern comprising elongated straight lesions and elongated curvilinear lesions. The lesion pattern directs electrical impulses within the atrial myocardium along a path that activates the atrial myocardium while interrupting reentry circuits that, if not interrupted, would cause fibrillation. The method emulates the surgical maze procedure, but lends itself to catheter-based procedures that do not require open heart surgical techniques. A composite structure for performing the method is formed using a template that displays in planar view a desired lesion pattern for the tissue. An array of spaced apart element is laid on the template. Guided by the template, energy emitting and non-energy emitting zones are formed on the elements. By overlaying the elements, the composite structure is formed, which can be introduced into the body to ablate tissue using catheter-based, vascular access techniques.

    摘要翻译： 心脏中消融组织以治疗心房颤动的方法将所选择的心房引入能量发射元件。 该方法将该元件暴露于心房壁的一个区域，并向该元件施加消融能量以热破坏组织。 该方法形成包括细长的直线损伤和细长的曲线损伤的褶皱病变图案。 病变图案沿着激活心房心肌的路径引导心房心肌内的电脉冲，同时中断再入电路，如果不中断，将引起原纤维化。 该方法模拟外科迷宫手术，但适用于不需要开放心脏手术技术的基于导管的手术。 用于执行该方法的复合结构使用在平面图中显示用于组织的期望损伤图案的模板来形成。 间隔开的元件阵列放置在模板上。 在模板的指导下，在元件上形成能量发射和非能量发射区。 通过覆盖元件，形成复合结构，其可以引入体内以使用基于导管的血管通路技术来烧蚀组织。

    Tissue heating and ablation systems and methods using self-heated electrodes
    100.
    发明授权
    Tissue heating and ablation systems and methods using self-heated electrodes 失效
    组织加热和消融系统和使用自热电极的方法

    公开(公告)号：US6022346A

    公开(公告)日：2000-02-08

    申请号：US480138

    申请日：1995-06-07

    申请人： Dorin Panescu ,  Sidney D. Fleischman ,  David K. Swanson

    发明人： Dorin Panescu ,  Sidney D. Fleischman ,  David K. Swanson

    IPC分类号： A61B18/12 ,  A61B18/14 ,  A61N1/40 ,  A61B17/39

    CPC分类号： A61B18/1206 ,  A61B18/1492 ,  A61N1/403 ,  A61B18/1402 ,  A61B2018/00083 ,  A61B2018/00095 ,  A61B2018/00791 ,  A61B2018/00803

    摘要： Systems and methods using an electrode able to transmit heating or ablation energy into tissue include first and second sensing elements associated with the electrode for measuring first and second temperatures. The electrode also includes a heating element in thermal conductive contact with the electrode for heating the electrode. The systems and methods sequentially activate the heating element and sense temperatures without transmitting tissue heating or ablation energy, and then transmit heating or ablation energy and sense temperatures without activating the heating element, to derive from the sensed temperatures a prediction of maximum tissue temperature.

    摘要翻译： 使用能够将加热或消融能量传递到组织中的电极的系统和方法包括与用于测量第一和第二温度的电极相关联的第一和第二感测元件。 电极还包括与用于加热电极的电极导热接触的加热元件。 系统和方法顺序地激活加热元件并且感测温度而不传递组织加热或消融能量，然后传递加热或消融能量并感测温度而不激活加热元件，从感测的温度导出最大组织温度的预测。