公开(公告)号：US06325764B1

公开(公告)日：2001-12-04

申请号：US08967054

申请日：1997-11-10

申请人： Richard Lee Griffith ,  Robert J. Strowe ,  Jonathan C. Newell ,  Peter M. Edic ,  Ralph F. Messina ,  Frederick Charles Houghton

发明人： Richard Lee Griffith ,  Robert J. Strowe ,  Jonathan C. Newell ,  Peter M. Edic ,  Ralph F. Messina ,  Frederick Charles Houghton

IPC分类号： A61B505

CPC分类号： A61B5/4893 ,  A61B5/05 ,  A61N1/0551 ,  A61N1/36021 ,  Y10S977/864 ,  Y10S977/875

摘要： A self-contained electrolocation apparatus of the present invention includes an electrically conducting needle cannula having a proximal end, a distal end and a hollow bore therethrough. The invention further includes a non-conductive tube having a proximal end and a distal end, the tube being mounted over the needle cannula so that the distal end of the non-conductive tube is proximal to the distal end of the needle cannula. The non-conductive tube has a conductive layer thereon, whereby the needle cannula and the conductive layer respectively define first and second conductors coaxially spaced from one another by the non-conductive tube. There is a grip fixedly attached to the needle cannula for manipulating the apparatus. The grip has an electrical stimulus generator circuit within it that is electrically connected to the first conductor and the second conductor. The stimulus generator circuit is capable of applying a potential across the conductors so that when the needle is positioned in a patient's tissue and the electrical stimulus generator circuit is activated, the potential is sufficient to induce a preselected current thereby providing a charge pulse between the distal end of the conductive layer and the distal end of said needle cannula through the patient's tissue. The charge pulse is sufficient to induce a twitch response in the patient.

摘要翻译： 本发明的自包含的定位装置包括具有近端，远端和穿过其的中空孔的导电针插管。 本发明还包括具有近端和远端的非导电管，所述管安装在针插管上方，使得非导电管的远端靠近针插管的远端。 非导电管在其上具有导电层，由此针管和导电层分别限定由非导电管彼此同轴间隔开的第一和第二导体。 固定地连接到针插管上的把手用于操纵该装置。 手柄具有电连接到第一导体和第二导体的电刺激发生器电路。 刺激发生器电路能够跨导体施加电位，使得当针定位在患者组织中并且电刺激发生器电路被激活时，电位足以引起预选电流，从而在远端 导电层的端部和所述针插管的远端穿过病人的组织。 充电脉冲足以引起患者的抽搐反应。

公开(公告)号：US5853373A

公开(公告)日：1998-12-29

申请号：US695151

申请日：1996-08-05

申请人： Richard Lee Griffith ,  Robert J. Strowe ,  Jonathan C. Newell ,  Peter M. Edic ,  Ralph F. Messina ,  Frederick Charles Houghton

发明人： Richard Lee Griffith ,  Robert J. Strowe ,  Jonathan C. Newell ,  Peter M. Edic ,  Ralph F. Messina ,  Frederick Charles Houghton

IPC分类号： A61B5/05 ,  A61M19/00 ,  A61N1/05 ,  A61N1/36

CPC分类号： A61B5/4893 ,  A61B5/05 ,  A61N1/36021 ,  A61N1/0551 ,  Y10S977/864 ,  Y10S977/875

摘要： An electrolocation apparatus is provided for locating a nerve to which anesthesia may be delivered. The apparatus includes a needle assembly having an electrically conductive needle cannula non-conductive tube secured over the needle cannula, and a conductive plating on the tube. The conductors are connected to a stimulator that generates alternating high and low charge pulses with a constant low current level. The high charge pulses generate noticeable muscle twitches immediately after insertion of the needle into the patient. Muscle twitches responsive to the high charge pulses will peak in magnitude, and muscle twitches responsive to the low charge pulses will become observable as the needle approaches the targeted nerve, and will be indistinguishable from the muscle twitches responsive to the high charge pulses when the needle is in a position for administration of anesthetic.

摘要翻译： 提供了一种定位用于定位可以输送麻醉的神经的定位装置。 该装置包括针组件，其具有固定在针插管上的导电针插管非导电管，以及管上的导电电镀。 导体连接到刺激器，该激励器产生具有恒定低电流电平的交替的高电平和低电荷脉冲。 高电荷脉冲在将针插入患者体内后立即产生明显的肌肉抽搐。 响应于高电荷脉冲的肌肉抽搐将达到峰值，并且响应于低电荷脉冲的肌肉抽搐将随着针接近目标神经而变得可观察到，并且当针头响应于高电荷脉冲时，与肌肉抽搐无法区分 处于麻醉剂的施用位置。