公开(公告)号：US07276067B2

公开(公告)日：2007-10-02

申请号：US10856927

申请日：2004-05-27

申请人： Thomas O. Bales ,  Juergen A. Kortenbach

发明人： Thomas O. Bales ,  Juergen A. Kortenbach

IPC分类号： A61B18/18

CPC分类号： A61B17/32056 ,  A61B17/320016 ,  A61B17/32002 ,  A61B2017/2902 ,  A61B2017/2905 ,  A61B2017/2929 ,  F16C1/02 ,  F16C1/08 ,  F16C2316/10

摘要： A multifilar flexible rotary shaft includes a plurality of individual filaments which are not wound around each other or around a central core, a loose ensemble of filaments. The input ends of each filament are coupled to each other and the output ends of each filament are coupled to each other. Preferably all of the filaments are identical. A loose ensemble of N filaments can transmit N times the torque of a single filament, and will have N times the torsional stiffness of a single filament, while retaining the minimum radius of operation of a single filament. Since a loose ensemble of filaments does not have any appreciable contact forces among the filaments (because they are not forcibly twisted together), there is no appreciable internal friction or hysteresis. In order to appreciably eliminate all the hysteresis in such an ensemble of filaments, the filaments should be no more than loosely twisted together, if at all. The only reason for loosely twisting the wires together is to allow the ensemble to be easily handled and to insure that the individual wire filaments follow the same general curved path from one end to the other. Several practical applications of the invention are also disclosed.

摘要翻译： 多针柔性旋转轴包括多个单独的细丝，它们彼此不缠绕或围绕中心芯，松散的细丝组合。 每个灯丝的输入端彼此耦合，并且每个灯丝的输出端彼此耦合。 优选地，所有的长丝是相同的。 N细丝的松散组合可以传播N倍的单丝的扭矩，并且将具有单丝的扭转刚度的N倍，同时保持单丝的最小操作半径。 由于长丝的松散组合在细丝之间没有任何明显的接触力（因为它们不被强制扭曲在一起），所以没有明显的内部摩擦或滞后。 为了明显地消除这种灯丝组合中的所有滞后现象，如果有的话，灯丝不应该松散地扭曲在一起。 将电线松散地缠绕在一起的唯一原因是允许集合容易地处理并且确保单个线丝沿着从一端到另一端的相同的一般弯曲路径。 还公开了本发明的几个实际应用。

公开(公告)号：US5624459A

公开(公告)日：1997-04-29

申请号：US378741

申请日：1995-01-26

申请人： Juergen A. Kortenbach ,  Philip O. Erwin

发明人： Juergen A. Kortenbach ,  Philip O. Erwin

IPC分类号： A61B17/34

CPC分类号： A61B17/3417 ,  A61B17/3496 ,  A61B2017/346

摘要： A surgical trocar has three integral single beveled blades having cutting edges which, when viewed head on, resemble a Y configuration. The distal end of each blade is formed with a leading cutting edge and a single trailing edge which define a single beveled face. The blades are arranged so that their leading edges converge to form a sharp point at the distal end of the trocar with the leading cutting edges extending proximally and radially from the point. The trocar is preferably extruded with three fins which are shifted relative to the longitudinal axis of the extrusion such that at most a first side of each fin lies along a ray from the longitudinal axis of the extrusion. Alternatively, both sides are shifted to one side of the longitudinal axis. The distal end of each fin is then ground to form a single bevel with at least a portion of the cutting edge of the beveled fin lying in a plane which includes the longitudinal axis of the extrusion and being angled proximally. The fins are preferably spaced at 120.degree. intervals from one another about the longitudinal axis of the extrusion. The extrusion is preferably stepped proximal of the cutting edges to form a descending step for stopping the distal movement of a spring biased safety shield. The fins may be ground using the same machine used to grind a pyramidal trocar tip and will result in cutting edges with half the angle of the cutting edges of the pyramidal tip.

摘要翻译： 手术套管针具有三个整体单个斜切叶片，其具有切割边缘，当从头部观察时，其具有类似于Y构型的切割边缘。 每个叶片的远端形成有一个前缘切割刃和一个限定单个斜面的单个后缘。 叶片被布置成使得它们的前缘会聚在套管针的远端处形成尖锐点，其中前切割边缘从该点向近侧和径向延伸。 套针针优选地以三个翅片挤出，这三个翅片相对于挤压件的纵向轴线移动，使得每个翅片的至多第一侧沿着从挤压件的纵向轴线射出的射线。 或者，两侧移动到纵轴的一侧。 然后将每个翅片的远端研磨以形成单个斜面，其中斜切翅片的切割边缘的至少一部分位于包括挤压件的纵向轴线并且向近侧成角度的平面中。 翅片优选地围绕挤出件的纵向轴线以彼此间隔120度的间隔。 挤压优选地在切割边缘的阶梯状附近形成用于停止弹簧偏置安全防护罩的远端运动的下降步骤。 可以使用用于研磨金字塔形针尖头的相同机器研磨翅片，并且将导致与锥体尖端的切割边缘的一半角度的切割边缘。

公开(公告)号：US5242461A

公开(公告)日：1993-09-07

申请号：US734366

申请日：1991-07-22

申请人： Juergen A. Kortenbach ,  John W. Box

发明人： Juergen A. Kortenbach ,  John W. Box

IPC分类号： A61B17/00 ,  A61B17/22

CPC分类号： A61B17/320725

摘要： According to the invention there is provided an intravascular catheter comprising an elongated flexible jacket having opposed proximal and distal ends and a central passageway extending between and interconnecting the ends. A rotating working head is located at the distal end of the jacket. A flexible drive cable extends through the passageway of the jacket, having a driving end operatively connected to the working head for rotating it, and a driven end operatively connected to a high-speed motor. The working head is rotatably mounted in a bearing sleeve which is further attached to the catheter jacket. The working head is actuated, by a actuator which adjust the a pair of tip portions from an at least initial retracted position with a first effective working diameter to an extended position with a second effective working diameter greater than the first effective diameter. Centrifugal forces generated by rotation of the cable cause the tip portions to assume the greater effective working diameter.