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公开(公告)号：US5741320A
公开(公告)日：1998-04-21
申请号：US433229
申请日：1995-05-02
IPC分类号： A61M25/01 , A61M25/092 , A61M37/00
CPC分类号： A61M25/0144 , A61M25/0136 , A61M25/0147 , A61M2025/015
摘要： A steerable catheter comprising a resilient body member, a manipulation handle attached to the proximal end of the body member, a control wire extending from the handle to the distal end of the catheter for deflection control, and a pulley mechanism for controlling the movement of the control wire. Longitudinal movement of a slide element in the handle causes movement of the control wire and control over the deflection of the distal end of the catheter. The pulley mechanism is connected between the slide element and the control wire to provide greater mechanical advantage to effect deflection of the body member while enhancing deflection control resolution. A stiffening member is also disposed in the catheter body member and its position is controlled by the rotational motion of the slide element. The position of the pulley mechanism is not affected by rotational motion of the slide element.
摘要翻译： 一种可导向导管，包括弹性体构件，附接到主体构件的近端的操纵手柄，从手柄延伸到导管的远端以用于偏转控制的控制线，以及用于控制主体构件的运动的滑轮机构 控制线。 滑动元件在手柄中的纵向运动引起控制线的移动并控制导管远端的偏转。 滑轮机构连接在滑动元件和控制线之间，以提供更大的机械优点来实现主体部件的偏转，同时增强偏转控制分辨率。 加强构件也设置在导管本体构件中，并且其位置由滑动元件的旋转运动控制。 滑轮机构的位置不受滑动元件的旋转运动的影响。
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公开(公告)号：US5606974A
公开(公告)日：1997-03-04
申请号：US434004
申请日：1995-05-02
CPC分类号： A61B17/2202 , A61B2017/00084 , A61B2017/00092 , A61B2017/00243
摘要： A catheter includes a piezoelectric transducer mounted to the distal end of a catheter. In one embodiment, the piezoelectric transducer has the shape of a cylinder and in another embodiment, a convex shape with a mounting flange. In the cylindrical shape, a plurality of surface mounted temperature sensors are disposed within the piezoelectric transducer. The sensors are electrically insulated and a sealing technique prevents the leakage of body fluids from penetrating the interior of the catheter through the sensor bores. The cylindrical transducer is supported on mounting members so that it is accurately mounted and sealed while at the same time, the material used does not significantly dampen the transducer. The convex shape includes a temperature sensor at its tip.
摘要翻译： 导管包括安装到导管的远端的压电换能器。 在一个实施例中，压电换能器具有圆筒的形状，在另一实施例中，具有安装凸缘的凸形。 在圆筒形状中，多个表面安装温度传感器设置在压电换能器内。 传感器是电绝缘的，并且密封技术防止体液泄漏通过传感器孔穿透导管内部。 圆柱形换能器支撑在安装构件上，使其精确安装和密封，同时所使用的材料不会显着损坏换能器。 凸形包括其顶端的温度传感器。
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公开(公告)号：US06730058B2
公开(公告)日：2004-05-04
申请号：US09952501
申请日：2001-09-13
申请人： Robert C. Hayzelden
发明人： Robert C. Hayzelden
IPC分类号： A61M3100
CPC分类号： A61M25/0144 , A61M25/0136 , A61M25/0147 , A61M2025/0063
摘要： A catheter includes a steering system for manipulating the distal-end region of a sheath having a plurality of electrodes into direct contact with difficult-to-reach areas of the human body. The steering system includes a core base, a core distal tip, a stylet, a steering tendon, and a lever. Movement of the lever applies tension to the steering tendon causing the distal end of the sheath to deflect. A positioning mechanism, including a slidable controller, adjusts the position of the steering system relative to the catheter sheath to thereby provide multiple steering profiles.
摘要翻译： 导管包括用于操纵具有多个电极的护套的远端区域的转向系统，其与人体的难以到达的区域直接接触。 该转向系统包括一个芯部基座，一个芯部的远端，一个探针，一个转向腱和一个杠杆。 杠杆的运动对转向腱施加张力，导致护套的远端偏转。 包括可滑动控制器的定位机构调节转向系统相对于导管护套的位置，从而提供多个转向轮廓。
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公开(公告)号：US6096036A
公开(公告)日：2000-08-01
申请号：US72962
申请日：1998-05-05
CPC分类号： B82Y15/00 , A61M25/0041 , A61B2017/00053 , A61B2017/00057 , A61B2017/00243 , A61B2017/00867 , A61M2025/0161 , A61M25/0147 , A61M25/0152 , A61N1/056
摘要： A catheter has a stylet formed of a shape-retentive and resilient material having a preformed curved shape at its distal end resulting in the catheter sheath having the preformed curved shape. The catheter sheath has a plurality of electrodes at its distal end for contacting selected biological tissue for imparting ablation energy thereto. The catheter sheath also has an axially mounted tendon for causing deflection of the distal end. The stylet material permits straightening the catheter sheath during insertion into the patient and advancing the electrodes to the target tissue. Upon removal of the straightening forces, such as by entry into a chamber of the heart, the stylet material resumes its preformed curved distal shape thereby forcing the catheter distal end with the electrodes into the same preformed curved shape. The operator may place the curved distal end into contact with the target tissue and axially move the tendon as desired to gain greater control over the bend in the distal end of the catheter sheath to adjust the radius of curvature of the distal end to obtain greater contact of the electrodes with the heart tissue. Preferably, the stylet is formed of nitinol.
摘要翻译： 导管具有由形状保持性和弹性材料形成的探针，其在其远端处具有预成型的弯曲形状，导致导管护套具有预成型的弯曲形状。 导管鞘在其远端具有多个电极，用于接触选定的生物组织以向其施加消融能量。 导管护套还具有轴向安装的腱，用于引起远端的偏转。 探针材料允许在插入患者期间矫正导管鞘，并将电极推进到靶组织。 在去除矫直力时，例如通过进入心脏室，探针材料恢复其预先形成的弯曲远端形状，从而迫使导管远端与电极形成相同的预成形弯曲形状。 操作者可以将弯曲的远端放置成与目标组织接触，并根据需要轴向移动肌腱以获得对导管套管远端的弯曲部的更大控制，以调节远端的曲率半径以获得更大的接触 的电极与心脏组织。 探针最好由镍钛诺形成。
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5.发明授权公开(公告)号：US06869414B2
公开(公告)日：2005-03-22
申请号：US10105087
申请日：2002-03-22
CPC分类号： A61M25/0147 , A61M25/0041 , A61M25/0138 , A61M25/0152 , A61M2025/0161 , A61M2025/0163
摘要： A catheter employs a pre-formed distal end and a proximal deflection mechanism for steering the catheter. A shaped member extends from a shaped region of the catheter sheath to at least a portion of an anchor region. A steering ribbon extends from a proximal region of the sheath and passes within at least a portion of the anchor region. A distal end of the steering ribbon is joined with a proximal portion of the shaped member. At least one steering tendon is disposed within the sheath and has a first end attached at the anchor region and a second end located at the proximal region of the sheath. Movement of the steering tendon in a proximal direction causes the deflection region to deflect relative to the longitudinal axis of the catheter while the shape of shaped region of the sheath is substantially maintained.
摘要翻译： 导管采用预先形成的远端和用于转导导管的近端偏转机构。 成形构件从导管护套的成形区域延伸到锚定区域的至少一部分。 转向带从护套的近侧区域延伸并且在锚定区域的至少一部分内通过。 转向带的远端与成形构件的近端部分连接。 至少一个转向筋设置在护套内并且具有附接在锚定区域处的第一端和位于护套的近侧区域处的第二端。 转向腱在近端方向的移动导致偏转区域相对于导管的纵向轴线偏转，同时护套的成形区域的形状基本上保持。
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公开(公告)号：US06648875B2
公开(公告)日：2003-11-18
申请号：US09849325
申请日：2001-05-04
IPC分类号： A61M25098
CPC分类号： A61M25/0136
摘要： A catheter handle includes a steering controller to be used in conjunction with a steerable catheter shaft, and a steering tendon tensioning device. The operator deflects the profile of a distal-end region of the catheter by rotating the steering controller. Spring devices located on the steering tendons maintain the steering tendons in tension during manipulation of the steering controller. A locking device locks the steering controller in place relative to the handle.
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公开(公告)号：US06616628B2
公开(公告)日：2003-09-09
申请号：US10045704
申请日：2001-11-16
申请人： Robert C. Hayzelden
发明人： Robert C. Hayzelden
IPC分类号： A61M3700
CPC分类号： A61M25/0136 , A61B18/1492 , A61B2017/003 , A61B2018/00357 , A61M25/0147
摘要： A catheter includes a steering tendon and a longitudinally adjustable core having a curved shape in the distal portion thereof. The steering tendon is attached to the distal-end region of the catheter sheath. The proximal end of the core is coupled to a positioning mechanism within the catheter handle and the distal end of the core floats within the catheter sheath. The position of the distal end of the core can be adjusted by advancing or retracting the positioning mechanism within the handle. Axial movement of the steering tendon in the proximal direction causes the distal-end region of the catheter sheath to deflect, while longitudinal adjustment of the curved core changes the deflection profile of the distal-end region of the catheter sheath.
摘要翻译： 导管包括其远端部分中具有弯曲形状的转向腱和纵向调节的芯。 导向腱连接到导管鞘的远端区域。 芯的近端连接到导管手柄内的定位机构，并且芯的远端在导管鞘内浮动。 可以通过使手柄内的定位机构前进或后退来调整芯的远端的位置。 转向腱在近端方向的轴向运动导致导管鞘的远端区域偏转，而弯曲芯的纵向调节改变了导管鞘的远端区域的偏转轮廓。
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公开(公告)号：US06270496B1
公开(公告)日：2001-08-07
申请号：US09516280
申请日：2000-03-01
IPC分类号： A61B1818
CPC分类号： B82Y15/00 , A61B2017/00053 , A61B2017/00057 , A61B2017/00243 , A61B2017/00867 , A61M25/0041 , A61M25/0147 , A61M25/0152 , A61M2025/0161 , A61N1/056
摘要： A catheter has a stylet formed of a shape-retentive and resilient material having a preformed curved shape at its distal end resulting in the catheter sheath having the preformed curved shape. The catheter sheath has a plurality of electrodes at its distal end for contacting selected biological tissue for imparting ablation energy thereto. The catheter sheath also has an axially mounted tendon for causing deflection of the distal end. The stylet material permits straightening the catheter sheath during insertion into the patient and advancing the electrodes to the target tissue. Upon removal of the straightening forces, such as by entry into a chamber of the heart, the stylet material resumes its preformed curved distal shape thereby forcing the catheter distal end with the electrodes into the same preformed curved shape. The operator may place the curved distal end into contact with the target tissue and axially move the tendon as desired to gain greater control over the bend in the distal end of the catheter sheath to adjust the radius of curvature of the distal end to obtain greater contact of the electrodes with the heart tissue. Preferably, the stylet is formed of nitinol.
摘要翻译： 导管具有由形状保持性和弹性材料形成的探针，其在其远端处具有预成型的弯曲形状，导致导管护套具有预成型的弯曲形状。 导管鞘在其远端具有多个电极，用于接触选定的生物组织以向其施加消融能量。 导管护套还具有轴向安装的腱，用于引起远端的偏转。 探针材料允许在插入患者期间矫正导管鞘，并将电极推进到靶组织。 在去除矫直力时，例如通过进入心脏室，探针材料恢复其预先形成的弯曲远端形状，从而迫使导管远端与电极形成相同的预成形弯曲形状。 操作者可以将弯曲的远端放置成与目标组织接触，并根据需要轴向移动肌腱以获得对导管套管远端的弯曲部的更大控制，以调节远端的曲率半径以获得更大的接触 的电极与心脏组织。 探针最好由镍钛诺形成。
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公开(公告)号：US6146381A
公开(公告)日：2000-11-14
申请号：US73395
申请日：1998-05-05
CPC分类号： A61M25/0041 , A61B2017/00053 , A61B2017/00243 , A61B2017/00867 , A61M25/0147 , A61M25/0152 , A61N1/056
摘要： A catheter having a preformed distal shape for positioning a plurality of electrodes at a selected biological site includes a sheath having a preformed bend in the distal end region to distribute axial forces applied, in the distal direction, to the distal end region over a surface area of the distal end region proximal the distal tip. Also included in the catheter sheath is a stylet formed of a material capable of retaining a shape with the distal end of the stylet shaped in the preformed bend. Preferably, the preformed bend is approximately 45 degrees. Axial forces applied to the catheter are deflected to cause bowing of the catheter so that a larger surface area of the catheter contacts the tissue, rather than the smaller surface area of the distal tip. In other aspects, the portion of the sheath coincident with the preformed bend has a lower durometer, the stylet is more flexible by having a reduced diameter and the electrodes are located proximal to the preformed bend.
摘要翻译： 具有用于在选定的生物部位定位多个电极的预形成的远端形状的导管包括在远端区域中具有预成型弯曲的护套，用于将远端方向上施加的轴向力分布在表面区域上的远端区域 的远端区域。 还包括在导管鞘中的探针是由能够保持形状的材料形成的探针，所述探针的形状与预成形弯曲部中形状的探针的远端相连。 优选地，预成形弯曲部约为45度。 施加到导管的轴向力被偏转以引起导管弯曲，使得导管的较大表面积接触组织，而不是远端尖端的较小表面积。 在其他方面，护套与预成形弯曲部重合的部分具有较低的硬度，通过具有减小的直径并且电极位于预先形成的弯曲部的近侧，探针更灵活。
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10.发明授权公开(公告)号：US07419477B2
公开(公告)日：2008-09-02
申请号：US10855544
申请日：2004-05-27
CPC分类号： A61M25/0147 , A61M25/0041 , A61M25/0138 , A61M25/0152 , A61M2025/0161 , A61M2025/0163
摘要： Methods of using a catheter involve providing a sheath comprising a proximal region, a deflection region, a distal-end region including a shapeable region, an anchor region defined between the deflection region and the shapeable region, and a longitudinal axis. The method also involves imparting a pre-established shape to the shapeable region. The method further involves applying axial force in a proximal direction at the anchor region so as to cause the deflection region to deflect relative to the longitudinal axis while the pre-established shape imparted to the shapeable region of the sheath is substantially maintained.
摘要翻译： 使用导管的方法包括提供包括近端区域，偏转区域，包括可形成区域的远端区域，限定在偏转区域和可成形区域之间的锚定区域以及纵向轴线的护套。 该方法还涉及将可建立的形状赋予可塑区域。 该方法还包括在锚定区域处沿近端方向施加轴向力，以使得偏转区域相对于纵向轴线偏转，同时基本上保持赋予护套的可塑区域的预先确定的形状。
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