公开(公告)号：US06918917B1

公开(公告)日：2005-07-19

申请号：US09686729

申请日：2000-10-10

申请人： John D. Nguyen ,  Arthur Hill ,  Laurent Schaller

发明人： John D. Nguyen ,  Arthur Hill ,  Laurent Schaller

IPC分类号： A61B17/04 ,  A61B17/06 ,  A61B17/064 ,  A61B17/08 ,  A61F2/24 ,  A61B17/10

CPC分类号： A61B17/064 ,  A61B17/0469 ,  A61B17/06 ,  A61B2017/0472 ,  A61B2017/06009 ,  A61B2017/06057 ,  A61B2017/081 ,  A61F2/2445 ,  A61F2/2466

摘要： Clips of a self-closing type are used in annuloplasty procedures. Each clip is generally U-shaped with two end points separated from each other when it is constrained to be in an open configuration, but tends to coil up to assume its naturally closed configuration if the constraint is removed. A plurality of such clips in open configurations penetrate the tissue around the annulus circumferentially and then the constraint keeping them in the open configuration is removed such that they pull the tissue together between their two end points and this tends to reduce the diameter of the annulus. Such clips may be deployed each in the form of a clip assembly, having at least one of its end points connected to a needle through a flexible member and a release mechanism by which the clip can be easily released. The needle is caused to penetrate the tissue at one position and to come out therefrom at another circumferentially separated positions. Alternatively, a clip delivery device may be used with a plurality of such clips loaded to a clip-holder serving to keep them in open configurations. A pusher pushes the loaded clips out of the device one at a time. Self-closing clips can be used efficiently also in ring annuloplasty and valve replacement procedures.

摘要翻译： 自闭型的夹子用于瓣环成形术。 每个夹子通常是U形的，当限制为处于打开构型时，两个端点彼此分开，但是如果约束被去除，则趋于线圈化以呈现其自然关闭的构造。 多个这样的打开构型的夹子沿圆周方向穿过环带周围的组织，然后去除保持它们处于打开构型的约束，使得它们将组织拉在它们的两个端点之间，这倾向于减小环的直径。 这样的夹子可以以夹子组件的形式展开，夹具组件的至少一个端点通过柔性构件连接到针头，释放机构通过该释放机构可以容易地释放夹子。 引导针在一个位置穿透组织，并在另一个周向分开的位置从其中脱出。 或者，剪辑传送设备可以与多个这样的夹子一起使用，这些夹子被加载到夹持器，用于使它们保持打开的配置。 一个推动器一次将装载的夹子推出设备。 自闭合夹可以有效地用于环瓣成形术和瓣膜置换手术。

公开(公告)号：US07744611B2

公开(公告)日：2010-06-29

申请号：US10718236

申请日：2003-11-19

申请人： John D. Nguyen ,  Laurent Schaller ,  Arthur Hill

发明人： John D. Nguyen ,  Laurent Schaller ,  Arthur Hill

IPC分类号： A61B17/08 ,  A61B17/04

CPC分类号： A61B17/064 ,  A61B17/0469 ,  A61B17/06 ,  A61B2017/0472 ,  A61B2017/06009 ,  A61B2017/06057 ,  A61B2017/081 ,  A61F2/2442

摘要： A clip of a self-closing type is used for valve repair. The clip is generally U-shaped with two end points separated from each other when it is constrained to be in an open configuration, but tends to coil up to assume its natural closed configuration if the constraint is removed. At least one end point is connected through a suture to a tissue-penetrating needle. A needle holder has an outer tube and an inner member which has a slit at the front and is slidable inside the outer tube. They are designed such that the slit can grab the needle tightly or release it as the inner member is moved backward or forward with respect to the outer tube. With the needle secured at the front, the needle holder is passed through a cannula inserted through an incision and the needle penetrates the leaflets such that the clip can be positioned with its end points hooked to the pair of leaflets to be stitched together. If the clip is released from the suture thereafter, it tends to coil up, reducing the distance between the end points and pulling the leaflets together. A double-arm clip assembly with each of the end points of the clip attached through a suture to a separate needle may be similarly used for valve repair. Such a double-arm clip assembly may contain two of such clips mutually connected by means of a flexible connector such that two leaflets are held together by the connector, with the two clips each anchored to a corresponding one of the leaflets.

摘要翻译： 自动关闭型的夹子用于阀门修理。 夹子通常为U形，当限制为处于打开构型时，两个端点彼此分离，但是如果约束被去除，则趋向于卷起以呈现其自然闭合构型。 至少一个端点通过缝合线连接到组织穿透针。 针保持器具有外管和内部构件，其在前部具有狭缝并且可在外管内滑动。 它们被设计成使得当内部构件相对于外管向后或向前移动时，狭缝可以紧紧地抓住针或释放针。 当针固定在前面时，针保持器穿过插入穿过切口的套管，并且针穿透小叶，使得夹子可以定位成其端点钩在一对传单上以缝合在一起。 如果夹子此后从缝合线中释放出来，则往往卷起，减少端点之间的距离并将传单拉到一起。 通过缝合线将夹子的每个端点附接到单独的针的双臂夹子组件可以类似地用于阀门修复。 这种双臂夹子组件可以包含两个这样的夹子，这些夹子通过柔性连接器相互连接，使得两个传单由连接器保持在一起，其中两个夹子各自固定到相应的一个传单中。

公开(公告)号：US06921407B2

公开(公告)日：2005-07-26

申请号：US10120579

申请日：2002-04-10

申请人： John D. Nguyen ,  Arthur Hill ,  Laurent Schaller

发明人： John D. Nguyen ,  Arthur Hill ,  Laurent Schaller

IPC分类号： A61B17/04 ,  A61B17/06 ,  A61B17/064 ,  A61B17/08 ,  A61F2/24 ,  A61B17/10

CPC分类号： A61B17/064 ,  A61B17/0469 ,  A61B17/06 ,  A61B2017/0472 ,  A61B2017/06009 ,  A61B2017/06057 ,  A61B2017/081 ,  A61F2/2445 ,  A61F2/2466

摘要： Clips of a self-closing type are used in annuloplasty procedures. Each clip is generally U-shaped with two end points separated from each other when it is constrained to be in an open configuration, but tends to coil up to assume its naturally closed configuration if the constraint is removed. A plurality of such clips in open configurations penetrate the tissue around the annulus circumferentially and then the constraint keeping them in the open configuration is removed such that they pull the tissue together between their two end points and this tends to reduce the diameter of the annulus. Such clips may be deployed each in the form of a clip assembly, having at least one of its end points connected to a needle through a flexible member and a release mechanism by which the clip can be easily released. The needle is caused to penetrate the tissue at one position and to come out therefrom at another circumferentially separated positions. Alternatively, a clip delivery device may be used with a plurality of such clips loaded to a clip-holder serving to keep them in open configurations. A pusher pushes the loaded clips out of the device one at a time. Self-closing clips can be used efficiently also in ring annuloplasty and valve replacement procedures.

公开(公告)号：US4559487A

公开(公告)日：1985-12-17

申请号：US648301

申请日：1984-09-07

申请人： Cecil W. Sims ,  Arthur Hill

发明人： Cecil W. Sims ,  Arthur Hill

IPC分类号： H02P9/14 ,  H02P9/30

CPC分类号： H02P9/305

摘要： A voltage regulator for a generating system having a main generator and an exciter for providing field current to the main generator includes means coupled to the main generator for sensing at least two operating parameters thereof. Means are coupled to the sensing means for generating pulse width modulated (PWM) signals based upon the first and second sensed operating parameters. Means are coupled to the first and second PWM signals for comparing the pulse widths thereof. The PWM signal having the narrower pulse width is coupled to a switch for controlling the current delivered to the exciter. The exciter current is therefore controlled in accordance with one of the sensed parameters at any particular time.

摘要翻译： 用于具有主发电机和用于向主发电机提供励磁电流的励磁机的发电系统的电压调节器包括耦合到主发电机的装置，用于感测其至少两个工作参数。 装置耦合到感测装置，用于基于第一和第二感测的操作参数来产生脉宽调制（PWM）信号。 装置耦合到第一和第二PWM信号以比较其脉冲宽度。 具有较窄脉冲宽度的PWM信号被耦合到用于控制传送到激励器的电流的开关。 因此，在任何特定时间，根据感测参数之一控制励磁机电流。