Two-axis angular rate gyroscope
    1.
    发明授权
    Two-axis angular rate gyroscope 失效
    双轴角速度陀螺仪

    公开(公告)号:US4811613A

    公开(公告)日:1989-03-14

    申请号:US93007

    申请日:1987-09-04

    IPC分类号: G01C19/42 G01C19/08 G01C19/28

    摘要: A two-axis angular rate gyroscopic apparatus is provided having a rotatable dish. The dish has a central hub portion and a plurality of flexible members, each of which extends from the hub portion. The entire disk is electrically conductive and connected to a reference potential. A plurality of electrically conductive members which are mounted end-to-end are located on an insulated plate mounted adjacent to the disk. A motor is provided for rotating the disk at approximately 2000 rpm. In addition, each of the flexible members in the disk has a pie-shaped section removed therefrom in order to increase its flexibility. By increasing the flexibility of the movable members, performance at low motor speeds is facilitated. An electronic circuit provides an output corresponding to the differential capacitance between the rotating disk and the members on the plate mounted adjacent thereto.

    Surgical procedures and devices for increasing cardiac output of the heart
    4.
    发明授权
    Surgical procedures and devices for increasing cardiac output of the heart 失效
    用于增加心脏输出量的外科手术和装置

    公开(公告)号:US07361137B2

    公开(公告)日:2008-04-22

    申请号:US10096299

    申请日:2002-03-11

    IPC分类号: A61N1/362

    摘要: Methods and devices for passively assisting the cardiac function of the heart are disclosed. A method of increasing the cardiac output of a heart includes providing a site of surgical access to the portion of the heart to be restrained, reducing the cardiac expansion of the portion of the heart to be restrained, and maintaining the reduction of cardiac expansion of the portion of the heart to be restrained for a substantial amount of time. Cardiac assist devices for increasing the cardiac output of the heart are disclosed comprising a reinforcing portion configured to contact a portion of the heart tissue wherein the reinforcing portion restricts the expansion of the portion of the heart tissue. The reinforcing portion can be a number of structures, including pads, frames, straps, and other retaining means for limiting cardiac expansion of the portion of the heart tissue to be restrained.

    摘要翻译: 公开了用于被动地协助心脏功能的方法和装置。 增加心脏心输出量的方法包括提供对被抑制心脏部分的手术通道的位置,减少被抑制的心脏部分的心脏扩张,以及维持心脏扩张的减少 心脏的一部分被约束了大量的时间。 公开了用于增加心脏的心输出量的心脏辅助装置,其包括构造成接触心脏组织的一部分的加强部分,其中增强部分限制心脏组织部分的扩张。 加强部分可以是许多结构,包括垫,框架,带和用于限制要抑制的心脏组织部分的心脏扩张的其它保持装置。

    Surgical devices for imposing a negative pressure to stabilize cardiac tissue during surgery

    公开(公告)号:US06852075B1

    公开(公告)日:2005-02-08

    申请号:US09440106

    申请日:1999-11-15

    申请人: Charles S. Taylor

    发明人: Charles S. Taylor

    摘要: The invention is devices and techniques which use a negative (suction) pressure or vacuum, applied through a surgical instrument, to fix the position of a portion of the surface of a beating heart so that a surgical procedure can be more easily performed. The devices apply a negative pressure at several points on the outer surface of the heart such that a portion of the heart is fixed in place by the suction imposed through the surgical instrument. Because the instrument fixes the position of the tissue, and because the instruments remain at a constant distance from the particular portion of the heart where the surgery is being performed, the device may also serve as a support or platform so that other surgical instruments or devices can be advantageously used at the site. In certain preferred embodiments, the devices described herein have structures to facilitate the use of additional surgical instruments such that the placement of negative pressure device permit the surgeon to advantageously manipulate the other instruments during surgery. The negative pressure is preferably imposed through a plurality of ports which may be disposed in a substantially planar surface of the instrument which contacts the cardiac tissue.

    Xyphoid access for cardiac surgical procedures
    6.
    发明授权
    Xyphoid access for cardiac surgical procedures 失效
    用于心脏外科手术的螺钉通道

    公开(公告)号:US06736774B2

    公开(公告)日:2004-05-18

    申请号:US09757128

    申请日:2001-01-08

    IPC分类号: A61B132

    摘要: Surgical procedures on the beating heart are enabled by an incision made in the xyphoid area and specially designed retractors and related devices to facilitate cardiac surgical procedures. Specifically, coronary artery bypass graft procedures (CABG) are achieved using a vertically offsetting retractor or access platform in combination with a beating heart stabilizer. The surgical methodology permits procedures such as the CABG procedure without penetrating the rib cage or performing a sternotomy or thorocotomy.

    摘要翻译: 在心脏跳动的外科手术可以通过在假体区域中进行的切口和专门设计的牵开器和相关装置来促进心脏手术。 具体来说,冠状动脉旁路移植手术(CABG)使用垂直抵消的牵开器或进入平台与跳动心脏稳定器组合来实现。 手术方法允许诸如CABG手术的过程,而不穿透肋骨架或执行胸骨切开术或胸腔切开术。

    Surgical instruments and procedures for stabilizing the beating heart during coronary artery bypass graft surgery
    9.
    发明授权
    Surgical instruments and procedures for stabilizing the beating heart during coronary artery bypass graft surgery 失效
    用于在冠状动脉旁路移植手术期间稳定跳动心脏的手术器械和程序

    公开(公告)号:US06394951B1

    公开(公告)日:2002-05-28

    申请号:US09525774

    申请日:2000-03-13

    IPC分类号: A61B132

    摘要: The invention is methods and devices which a surgeon may use to stabilize the beating heart during a surgical procedure on the heart. Pursuant to the invention, a stabilizing device is introduced through an opening in the chest and brought into contact with the beating heart. By contacting the heart with the device and by exerting a stabilizing force on the device, the motion of the heart caused by the contraction of the heart muscles is effectively eliminated such that the heart is stabilized and the site of the surgery moves only minimally if at all. Typically, in separate steps, the surgeon contacts the heart with the stabilizing device, assesses the degree of movement of the anastomosis site, and exerts a force on the stabilizing device such that the contraction of the beating heart causes only minimal excess motion at the surgery site. By fixing the position of the stabilizing device in a configuration where the motion of the beating heart is effectively eliminated, the surgeon is able to stabilize the beating heart for the duration of the procedure. The stabilizing device may be attached to a rigid support or may be attached to a semi-rigid support which is rendered motionless mechanically, chemically, or by human intervention. In certain preferred embodiments, the stabilizing device is affixed to a semi-rigid support which is caused to become rigid, by any of a variety of techniques, such that the position of the stabilizing device becomes fixed by the support, and the heart remains substantially motionless for the duration of the procedure.

    摘要翻译: 本发明是外科医生可以在心脏手术过程中稳定跳动心脏的方法和装置。 根据本发明,稳定装置通过胸部的开口引入并与打浆心接触。 通过将心脏与装置接触并且通过在装置上施加稳定力,由心脏肌肉收缩引起的心脏的运动被有效地消除,使得心脏稳定,并且手术部位仅在最小程度上移动,如果在 所有。 通常,在单独的步骤中,外科医生与稳定装置接触心脏,评估吻合部位的移动程度,并且在稳定装置上施加力,使得跳动心脏的收缩在手术时仅引起极小的过度运动 现场。 通过将稳定装置的位置固定在跳动心脏的运动被有效地消除的构造中,外科医生能够在手术期间稳定跳动的心脏。 稳定装置可以附接到刚性支撑件,或者可以附接到半刚性支撑件,其通过机械,化学方式或通过人为干预使其不动。 在某些优选实施例中,稳定装置通过各种技术中的任何一种固定到刚性刚性的半刚性支撑件上,使得稳定装置的位置由支撑件固定,心脏基本保持 在程序期间不动。

    Perfusion device for maintaining blood flow in a vessel while isolating
an anastomosis
    10.
    发明授权
    Perfusion device for maintaining blood flow in a vessel while isolating an anastomosis 失效
    用于在分离吻合期间维持血管中的血液流动的灌注装置

    公开(公告)号:US06071297A

    公开(公告)日:2000-06-06

    申请号:US956164

    申请日:1997-10-22

    IPC分类号: A61B17/11 A61B17/12 A61M29/00

    摘要: A plurality of embodiments of a distal perfusion device are disclosed, which device facilitates anastomosis constructions by maintaining a dry anastomosis site while simultaneously maintaining blood flow distally in the blood vessel to prevent ischemia and reduce overall patient trauma. The perfusion device is configured for installation into a blood vessel such as a left anterior descending coronary artery through an incision therein, to which is to be grafted a distal end of a blood vessel such as an internal mammary artery. The device includes a central member of selected configuration and material, terminating at either end thereof in respective selectively tapered end members. A lumen extending through the central member and end members, and selected perforations in the end members, maintain blood flow through the perfusion device. A selected portion or portions of the device's outer circumference fit snugly within the artery in the regions beyond and/or at the anastomosis site, to maintain the latter free of blood. Several methods for deploying and removing respective embodiments of the device also are illustrated.

    摘要翻译: 公开了一种远端灌注装置的多个实施例,该装置通过维持干吻合部位来促进吻合结构,同时在血管中保持血液向远端流动以防止局部缺血并减少总的患者创伤。 灌注装置被构造成通过其中的切口安装到诸如左前降支冠状动脉的血管中,其将被移植到诸如内部乳腺动脉的血管的远端。 该装置包括选定构型和材料的中心构件,其终端位于相应的选择性锥形端构件的任一端。 延伸穿过中心构件和端构件的内腔以及端构件中选择的穿孔保持血流通过灌注装置。 装置的外周的选定部分或部分适合紧贴在吻合部位之外和/或处于吻合部位的区域内的动脉内,以保持后者无血液。 还示出了用于部署和移除设备的各个实施例的几种方法。