公开(公告)号：WO1997011649A1

公开(公告)日：1997-04-03

申请号：PCT/IB1996000619

申请日：1996-06-28

Applicant: VALLEYLAB INC.

Inventor： VALLEYLAB INC. ,  ARTS, Gene, H. ,  CARR, Jan, E. ,  KUK-NAGLE, Karen, T. ,  LONTINE, Michael, D. ,  MILLBERG, Brian, A.

IPC: A61B17/39

CPC classification number: A61B18/1402 ,  A61B18/1233 ,  A61B2018/00107 ,  A61B2018/1412

Abstract: A design and method of manufacture are disclosed for an electrosurgical electrode (10) with a silicone coating. The coating resists the build-up of eschar. The silicone material is thick enough in the flat area of the blade to withstand the electrosurgical voltage without breakdown. The electrosurgical current path is primarily through the blade edges (15) and tip. The flat of the blade remains insulated under most conditions. The relatively thick coating also provides high tear strength and added durability. The composition of the electrode (10) coatings may include silicone elastomers (11) in the form of adhesives, dispersions, or liquid rubbers. The coating composition may also contain adhesion promoters, heat stabilizers, plasticizers, release enhancers, cross-linking agents, and colorants. Several methods of manufacture are illustrated by way of examples.

Abstract translation: 公开了一种具有硅氧烷涂层的电外科电极（10）的设计和制造方法。 涂层可抵抗焦痂的积聚。 硅树脂材料在叶片的平坦区域中足够厚，以承受电外科电压而不会破裂。 电外科电流路径主要穿过叶片边缘（15）和尖端。 在大多数条件下，刀片的平面保持绝缘。 较厚的涂层也提供高撕裂强度和增加的耐久性。 电极（10）涂层的组成可以包括粘合剂，分散体或液体橡胶形式的硅氧烷弹性体（11）。 涂料组合物还可以含有粘合促进剂，热稳定剂，增塑剂，释放促进剂，交联剂和着色剂。 通过实施例说明了几种制造方法。

公开(公告)号：WO1997011648A2

公开(公告)日：1997-04-03

申请号：PCT/IB1996000618

申请日：1996-06-28

Applicant: VALLEYLAB INC.

Inventor： VALLEYLAB INC. ,  BECKER, Daniel, J. ,  KLICEK, Michael, S.

IPC: A61B17/39

CPC classification number: A61B18/1206 ,  A61B2018/00875

Abstract: A constant power control circuit (107) for an electrosurgical generator (101) and a method for maintaining the electrical power output of an electrosurgical generator (101) at a generally constant value throughout a given tissue impedance range are disclosed. The constant power control circuit (107) and the method recognize and use the unique and simple linear characteristics associated with certain electrosurgical generator (101) designs to monitor and control the electrical power output without having to calculate or monitor the actual output power. The constant power control circuit (107) includes a current sampling circuit (115), a linear conversion circuit (117), and a feedback correction circuit (119). The constant power control circuit (107) may also include protection circuitry that prevents the electrosurgical generator (101) from being over-driven during high and/or low impedance loading (121), and reduces the severity of exit sparking by providing a quick response to high impedance indications while nonetheless maintaining increased power levels throughout a preset, nominal impedance range. The constant power control circuit (107) and method may be included as an integral part of the overall electrosurgical generator's (101) circuitry, or may be embodied as a separate unit that connects to, and controls, an electrosurgical generator (101). The constant power control circuit (107) and method may be embodied through a variety of analog and/or digital circuit components or arrangements, including software running on computational and memory circuitry.

Abstract translation: 公开了一种用于电外科发生器（101）的恒定功率控制电路（107）和用于在整个给定组织阻抗范围内将电外科发生器（101）的电功率输出维持在大致恒定值的方法。 恒定功率控制电路（107）并且该方法识别和使用与某些电外科发生器（101）设计相关联的独特且简单的线性特征来监测和控制电功率输出，而不必计算或监测实际的输出功率。 恒定功率控制电路（107）包括电流采样电路（115），线性转换电路（117）和反馈校正电路（119）。 恒定功率控制电路（107）还可以包括防止电外科生成器（101）在高阻抗和/或低阻抗负载（121）期间被过驱动的保护电路，并且通过提供快速响应来降低出口火花的严重性 到高阻抗指示，同时在预设的标称阻抗范围内保持增加的功率水平。 恒定功率控制电路（107）和方法可以被包括作为整个电外科生成器（101）电路的组成部分，或者可以被实施为连接到电外科发生器（101）并且控制电外科发生器（101）的单独单元。 恒定功率控制电路（107）和方法可以通过各种模拟和/或数字电路组件或布置来实现，包括在计算和存储器电路上运行的软件。

公开(公告)号：WO1997010763A1

公开(公告)日：1997-03-27

申请号：PCT/IB1996000669

申请日：1996-07-11

Applicant: VALLEYLAB INC.

Inventor： VALLEYLAB INC. ,  BUYSSE, Steven, Paul ,  KENNEDY, Jenifer, Serafin ,  LUKIANOW, Stephen, Wade ,  RYAN, Thomas, Patrick

IPC: A61B17/39

CPC classification number: A61B18/1206 ,  A61B18/12 ,  A61B2017/00026 ,  A61B2017/2932 ,  A61B2018/00702 ,  A61B2018/00779 ,  A61B2018/00869 ,  A61B2018/00875 ,  A61B2018/00892

Abstract: Electrosurgical energy is used in combination with a surgical tool (12) to seal vessels and vascular tissue of a patient (13). One of the important advances of the present system is that is can effectively seal vessels of a patient (13) without leaving any foreign material in the body of the patient (13). The present system is also capable of sealing vessels as large as ten millimeters in diameter. Another advantage of the present system is that the surgeon can visually inspect the integrity of the seal. The invention works with a combination of pressure and controlled application of electrosurgical energy to achieve the desired result. A surgical tool (12) is used to grasp and apply an appropriate amount of closure force to the tissue of the patient (13). The tool is capable of conducting electrosurgical energy to the tissue concurrently with the application of the closure force. A method for sealing vessels and vascular tissue of a patient (13) includes the steps of applying pressure to the vessels and other tissues of the patient (13); applying a first level of electrosurgical power to the vessels and other tissues sufficient to melt proteins in the tissue; applying a second level of electrosurgical power to the vessels and other tissues sufficient to cause desiccation without charring; reducing the electrosurgical power substantially to zero for a length of time sufficient to allow the vessels and other tissues to cool into a new compressed form; and relieving the pressure on the tissue.

Abstract translation: 电外科能量与外科手术工具（12）组合使用以密封患者（13）的血管和血管组织。 本系统的重要进展之一是可以有效地密封患者（13）的血管，而不会在患者体内（13）中留下任何异物。 本系统还能够密封直径达10毫米的容器。 本系统的另一个优点是外科医生可以目视检查密封的完整性。 本发明结合压力和电外科能量的受控应用来实现期望的结果。 外科手术工具（12）用于把握和施加适当量的闭合力给患者（13）的组织。 该工具能够在施加闭合力的同时对组织进行电外科能量。 用于密封患者（13）的容器和血管组织的方法包括对患者（13）的容器和其他组织施加压力的步骤; 对血管和其他组织施加足以融化组织中的蛋白质的电外科功能; 对足以引起干燥而不烧焦的血管和其他组织施加第二级电外科手术力; 将电外科手术功率基本上降低至零足以允许血管和其它组织冷却成新的压缩形式的时间长度; 并减轻对组织的压力。

公开(公告)号：WO1996039086A1

公开(公告)日：1996-12-12

申请号：PCT/IB1996000549

申请日：1996-06-03

Applicant: VALLEYLAB INC.

Inventor： VALLEYLAB INC. ,  BELL, Gregory, J. ,  KLICEK, Michael, S. ,  PATERSON, William, G.

IPC: A61B17/39

CPC classification number: A61B18/1206 ,  A61B2018/0016 ,  A61B2018/00666 ,  A61B2018/00702 ,  A61B2018/00791 ,  A61B2018/00827 ,  A61B2018/00869 ,  A61B2018/00875 ,  A61B2018/1253

Abstract: A power control system for an electrosurgical generator (11) will control the output power to desired levels. The power control system uses a simple closed-loop control algorithm. Sensors in the electrosurgical generator (11) will monitor changes in output current and output voltage. There may also be sensors to monitor changes in the temperature of the electrosurgical tool, mechanical strain in the electrosurgical tool, or phase shift between output voltage and output current. A microprocessor (19) in the electrosurgical generator (11) is connected to the sensors and repetitively compares the sensed values against their respective threshold values. The threshold values are computed by the microprocessor (19) based on the desired output power, or other desired tissue effects. The microprocessor (19) also has an output to control an adjustable high voltage power supply (15) in the electrosurgical generator (11). The microprocessor (19) will adjust the high voltage power supply (15) to maintain all sensed values below their respective threshold values. The threshold values are computed by the microprocessor (19) based on the desired output power, or other desired tissue effects. The threshold values may also be computed as a function of the impedance of the output load on the electrosurgical generator (11).

Abstract translation: 用于电外科发生器（11）的功率控制系统将将输出功率控制到期望的水平。 功率控制系统采用简单的闭环控制算法。 电外科发生器（11）中的传感器将监测输出电流和输出电压的变化。 还可以有传感器来监测电外科手术工具的温度变化，电外科手术工具中的机械应变或输出电压与输出电流之间的相移。 电外科发生器（11）中的微处理器（19）连接到传感器，并将感测值与它们各自的阈值重复比较。 阈值由微处理器（19）基于期望的输出功率或其他期望的组织效应计算。 微处理器（19）还具有用于控制电外科发生器（11）中的可调高压电源（15）的输出。 微处理器（19）将调节高压电源（15）以将所有感测值保持在其各自的阈值以下。 阈值由微处理器（19）基于期望的输出功率或其他期望的组织效应计算。 也可以根据电外科发生器（11）上的输出负载的阻抗来计算阈值。