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    • 12. 发明申请
    • Bone treatment systems and methods
    • 骨治疗系统和方法
    • US20060122625A1
    • 2006-06-08
    • US11209035
    • 2005-08-22
    • Csaba TruckaiJohn Shadduck
    • Csaba TruckaiJohn Shadduck
    • A61F2/34
    • A61B17/8805A61B17/70A61B17/8822A61B17/8827A61B17/8836A61B2017/00022A61B2017/00026A61B2017/00084A61B2017/564A61F2/44
    • The present invention relates in certain embodiments to medical devices for treating vertebral compression fractures. More particularly, embodiments of the invention relate to instruments and methods for controllably restoring vertebral body height by controlling the flow of bone cement into the interior of a vertebra and the application of forces causes by the cement flow. An exemplary system utilizes Rf energy in combination a conductive bone cement for selectively polymerizing the inflow plume to increase the viscosity of the cement. In one aspect of the invention, the system utilizes a controller to control bone cement flow parameters to either allow or disallow cement interdigitation into cancellous bone. A method of the invention includes pulsing the flows of bone cement wherein high acceleration of the flow pulses can apply expansion forces across the surface of the cement plume to reduce a vertebral fracture.
    • 本发明在某些实施例中涉及用于治疗脊椎压缩性骨折的医疗装置。 更具体地,本发明的实施例涉及通过控制骨水泥进入椎骨内部并且由水泥流引起的力的施加来可控地恢复椎体高度的仪器和方法。 示例性系统利用结合导电骨水泥的Rf能量来选择性聚合流入羽流以增加水泥的粘度。 在本发明的一个方面,该系统利用控制器来控制骨水泥流动参数以允许或不允许水泥交叉指向松质骨。 本发明的方法包括脉动骨粘固剂的流动,其中流动脉冲的高加速度可以施加穿过水泥羽流表面的膨胀力,以减少椎骨骨折。
    • 13. 发明申请
    • Bone treatment systems and methods
    • 骨治疗系统和方法
    • US20060106459A1
    • 2006-05-18
    • US11215730
    • 2005-08-30
    • Csaba TruckaiJohn Shadduck
    • Csaba TruckaiJohn Shadduck
    • A61F2/44
    • A61B17/8836A61B17/7095A61B17/7098
    • A system for treating an abnormal vertebral body such as a compression fracture. In an exemplary embodiment, the system includes a biocompatible flow-through implant structure configured with a three-dimensional interior web that defines flow openings therein for cooperating with a two-part hardenable bone cement. The flow-through structure is capable of compacted and extended shapes and in one embodiment provides a gradient in flow openings for controlling flow parameters of a bone cement injected under high pressure into the interior thereof. The flow-through implant structure is configured for transducing cement injection forces into a selected direction for moving apart cortical endplates of a vertebra to reduce a fracture. In one embodiment, the flow-through implant structure is coupled to an Rf source for applying Rf energy to a two-part bone cement to accelerate curing of the cement to thereby allow on-demand alterations of cement viscosity. The Rf system allows for control of bone cement polymerization globally or regionally to prevent cement extravasion and to direct forces applied to a vertebra to reduce a fracture.
    • 用于治疗异常椎体的系统,例如压缩性骨折。 在一个示例性实施例中,该系统包括生物相容性流通植入结构,该植入结构被构造成具有限定其中的流动开口的三维内部腹板,用于与两部分可硬化骨粘固剂配合。 流通结构能够压实和延伸形状,并且在一个实施例中提供流动开口中的梯度,用于控制在高压下注入其内部的骨粘固剂的流动参数。 流通植入结构被配置为将水泥注射力转换到选定的方向以移动分开的椎骨的皮层终板以减少骨折。 在一个实施例中,流过植入结构耦合到Rf源,以将Rf能量施加到两部分骨水泥以加速水泥的固化,从而允许水泥粘度的按需改变。 Rf系统允许全局或区域地控制骨水泥聚合,以防止水泥外渗,并引导施加到椎骨上的力以减少骨折。
    • 20. 发明申请
    • ELECTRICAL DISCHARGE DEVICES AND TECHNIQUES FOR MEDICAL PROCEDURES
    • 电子放电设备和医疗程序的技术
    • US20070213704A1
    • 2007-09-13
    • US11735318
    • 2007-04-13
    • Csaba TruckaiJohn Shadduck
    • Csaba TruckaiJohn Shadduck
    • A61B18/18
    • A61B17/22004A61B18/042A61B2017/22008A61B2018/1213
    • A medical instrument coupled to first and second energy means and a computer controller for the controlled volumetric removal of thin tissue layers. The system provides a source for introducing a gas to controllably form and capture transient gas volumes in a microchannel structure at the working surface of the instrument that interfaces with a targeted tissue site. Each of the microchannel features of the working surface carries an electrode element coupled to the electrical source. The energy may be applied to the targeted site in either of two modes of operation, depending in part on voltage and repetition rate of energy delivery. In one mode of energy application, electrical potential is selected to cause an intense electrical arc across the transient ionized gas volumes to cause an energy-tissue interaction characterized by tissue vaporization. In another preferred mode of energy delivery, the system applies selected levels of energy to the targeted site by means of an energetic plasma at the instrument working surface to cause molecular volatilization of surface macromolecules thus resulting in material removal. Both modes of operation limit collateral thermal damage to tissue volumes adjacent to the targeted site. Another preferred embodiment provides and an ultrasound source or other vibrational source coupled to the working end to cause cavitation in fluid about the working end.
    • 耦合到第一和第二能量装置的医疗器械和用于受控体积移除薄组织层的计算机控制器。 该系统提供用于引入气体的源,以可控地形成并捕获与目标组织部位相接触的仪器工作表面处的微通道结构中的瞬态气体体积。 工作表面的每个微通道特征带有耦合到电源的电极元件。 能量可以以两种操作模式中的任一种施加到目标位置,部分取决于能量传递的电压和重复率。 在一种能量应用模式中,选择电势以在瞬态电离气体体积上引起强烈的电弧以引起以组织蒸发为特征的能量 - 组织相互作用。 在另一种优选的能量输送模式中,系统通过仪器工作表面上的能量等离子体将选择的能量施加到目标部位,从而导致表面大分子的分子挥发,从而导致材料去除。 两种操作模式都限制了与目标部位相邻的组织体积的附带热损伤。 另一个优选实施例提供了耦合到工作端的超声源或其他振动源,以在工作端周围引起流体中的空化。