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    • 3. 发明授权
    • Expandable intracardiac return electrode and method of use
    • 可扩展心内返回电极及其使用方法
    • US06907297B2
    • 2005-06-14
    • US10032296
    • 2001-12-21
    • Parris S. WellmanRajesh PendekantiJia Hua Xiao
    • Parris S. WellmanRajesh PendekantiJia Hua Xiao
    • A61B18/14A61B18/16A61N1/06A61N1/00
    • A61B18/1482A61B18/16A61B2018/00363A61B2018/00577A61N1/06
    • A method of forming a lesion at a predetermined heart location is provided. An energy-delivering electrode is positioned proximal to the predetermined heart location; a return electrode is positioned in contact with cardiac tissue. An electrosurgical current, capable of delivering energy through the energy-delivering electrode to the predetermined heart location at a magnitude and for a duration effective to form a lesion is established. A system for treating atrial fibrillation by forming transmural lesions and a heart-positioning device including a return electrode are also provided. In one embodiment, one of the electrodes includes at least a portion that is selectively movable between a first, retracted position in which the electrode is adapted to be deployed through tissue, and a second, expanded position in which the electrode is adapted to be placed within a chamber of a heart.
    • 提供了在预定心脏位置处形成病变的方法。 能量输送电极位于预定的心脏位置附近; 定位回返电极与心脏组织接触。 建立了一种电外科电流,其能够以有效形成损伤的量级和持续时间将能量通过能量输送电极输送到预定的心脏位置。 还提供了一种通过形成透壁病变治疗房颤的系统和包括返回电极的心脏定位装置。 在一个实施例中,电极中的一个包括至少一部分,其可选择性地在电极适于通过组织展开的第一缩回位置和第二扩展位置之间移动,其中电极适于放置在其中 在心脏的一个房间内
    • 6. 发明授权
    • Surgical device for endoscopic vein harvesting
    • 用于内窥镜静脉采集的手术装置
    • US06527771B1
    • 2003-03-04
    • US09967185
    • 2001-09-28
    • Kevin S. WeadockParris S. Wellman
    • Kevin S. WeadockParris S. Wellman
    • A61B1732
    • A61B17/00008A61B18/1442A61B2018/00345A61B2018/00404A61B2018/00601A61B2018/00607
    • A surgical device including: a first shaft having a first projection radially offset from an axial direction of the first shaft, the first projection having a first clamping surface; a second shaft slidably disposed relative to the first shaft, the second shaft having a second projection radially offset from the axial direction, the second projection having a second clamping surface; a dissector for dissecting tissue from a blood vessel to be harvested; a first actuator for sliding the second projection relative to the first projection to capture a side branch of the vessel between the first and second clamping surfaces; at least one electrode for applying cauterizing energy to cauterize the captured side branch; a cutting blade movably disposed on one of the first or second projections; and a second actuator for moving the cutting blade to sever the side branch captured between the first and second projections.
    • 一种手术装置,包括:第一轴,其具有从所述第一轴的轴向方向径向偏移的第一突起,所述第一突起具有第一夹紧表面; 相对于第一轴可滑动地设置的第二轴,第二轴具有径向偏离轴向的第二突起,第二突起具有第二夹紧表面; 用于从要收获的血管解剖组织的解剖器; 第一致动器,用于相对于第一突起滑动第二突起,以捕获容器在第一和第二夹紧表面之间的侧分支; 至少一个电极,用于施加烧灼能量以灼烧所捕获的侧分支; 可移动地设置在所述第一或第二突起之一上的切割刀片; 以及用于移动切割刀片以切断在第一和第二突起之间捕获的侧分支的第二致动器。
    • 8. 发明授权
    • Transmural ablation tool and method
    • US06652518B2
    • 2003-11-25
    • US09966813
    • 2001-09-28
    • Parris S. WellmanRajesh Pendekanti
    • Parris S. WellmanRajesh Pendekanti
    • A61B1818
    • A61B18/1442A61B18/1402A61B18/148A61B2018/00291A61B2018/00351
    • An ablation method and device contacts one surface of a target layer and positions the tissue to ablate entirely through the layer. The tissue may be a wall of the heart (ablated, for example, to form blocking lesions for atrial fibrillation), and ablation may be performed with the heart stopped or beating, and effected by either endocardial or epicardial contact. Access may be through an open incision or a minimally invasive technique involving a small opening through which one or more elongated surgical tools are inserted. Illustratively, an atrial ablation treatment can be performed prophylactically (after CABG), or independently to treat an existing condition. A tool of the present invention has a handle at a proximal end, a bipolar ablation head, and an elongated body interconnecting the handle and the ablation head. A channel or contoured surface fixes and bends the tissue such that inter-electrode conduction paths span the thickness of the layer, thus dependably creating a fully transmural ablation lesion. The oriented transmural energy conduction paths reduce the possibility of inducing coagulation of blood in the heart chamber. One bipolar assembly has an electrode spacing of approximately ten millimeters across a channel of about five millimeters depth. Preferably the ablation head forms a suction holder, connected through internal passages to a vacuum pressure of about 100-500 mmHg, and immobilizes the contacted tissue.
    • 9. 发明授权
    • Training model for endoscopic vessel harvesting
    • 内窥镜血管收获训练模型
    • US06997719B2
    • 2006-02-14
    • US10183270
    • 2002-06-27
    • Parris S. WellmanWilliam McJamesDaniel Gordon
    • Parris S. WellmanWilliam McJamesDaniel Gordon
    • G09B23/28
    • G09B23/285
    • A leg model, designed to teach endoscopic saphenous vein harvesting, is provided that accurately models the anatomy of the saphenous vein in the human thigh, and closely approximates the subcutaneous tissues in a human. The subcutaneous tissue is formulated and manufactured such that the saphenous vein adheres to the subcutaneous tissue to simulate the adhesion in a human leg. The model includes a reusable base and a replaceable single use insert. The base is size and configured to receive the insert. The tray can include a slit located at a point along its length that permits the ends of the tray to rotate about the slit so that the ends can be bent with respect to one another.
    • 提供旨在教导内窥镜隐静脉收获的腿模型,其精确地模拟人大腿隐静脉的解剖结构,并且紧密接近人体的皮下组织。 配制和制造皮下组织,使得隐静脉粘附到皮下组织以模拟人腿中的粘附。 该模型包括可重复使用的基座和可更换的单用插入件。 基座是大小并配置为接收插入。 托盘可以包括位于沿其长度的点处的狭缝,其允许托盘的端部围绕狭缝旋转,使得端部可以相对于彼此弯曲。