-
公开(公告)号：US5057107A
公开(公告)日：1991-10-15
申请号：US656744
申请日：1991-02-19
申请人： David J. Parins , Mark A. Rydell , Peter Stasz
发明人： David J. Parins , Mark A. Rydell , Peter Stasz
CPC分类号： A61B18/1492 , A61B2017/00292 , A61B2018/00196 , A61B2018/00232 , A61B2018/1435 , A61B2018/1861 , A61M2025/1086 , A61M3/0279
摘要： A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of selected blood vessels is described. The catheter is characterized in having a tip member which during the initial placement of the catheter within the vascular system so that the distal tip member is disposed in a working relation with the lesion to be removed, means are provided for increasing the cross-sectional profile of the tip members to thereby cause it to move into engagement with the lesion to be excised. The application of an RF voltage across a pair of bipolar electrodes is used to create an electric arc for effecting the cutting action, or alternatively, just sufficient RF energy to sear or otherwise alter the tissue surfaces engaged by the distal tip member.
摘要翻译： 描述了用于去除动脉粥样硬化狭窄病变或改变选定血管内壁的组织特征的RF消融导管。 导管的特征在于具有尖端构件，其在将导管初始放置在血管系统内期间使得远侧末端构件与待移除的病变处于工作关系中，提供用于增加横截面轮廓的装置 的尖端构件，从而使其移动成与待切除的病变接合。 在一对双极电极之间施加RF电压用于产生用于实现切割动作的电弧，或者替代地，仅仅具有足够的RF能量以消除或以其它方式改变由远端尖端部件接合的组织表面。
-
公开(公告)号：US5078717A
公开(公告)日：1992-01-07
申请号：US580782
申请日：1990-09-10
申请人： David J. Parins , Mark A. Rydell , Peter Stasz
发明人： David J. Parins , Mark A. Rydell , Peter Stasz
CPC分类号： A61B18/1492 , A61B2017/00292 , A61B2018/00196 , A61B2018/00232 , A61B2018/1435 , A61B2018/1861 , A61M2025/1086 , A61M3/0279
摘要： A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of selected blood vessels is described. The catheter has a distal tip member which is disposed in a working relation with the lesion to be removed during the initial placement of the catheter within the vascular system. Means are provided for increasing the cross-sectional profile of the tip member to thereby cause it to move into engagement with the lesion to be excised. The application of an RF voltage across a pair of bipolar electrodes is used to create an electric arc for effecting the cutting action, or alternatively, just sufficient RF energy to sear or otherwise alter the tissue surfaces engaged by the distal tip member.
摘要翻译： 描述了用于去除动脉粥样硬化狭窄病变或改变选定血管内壁的组织特征的RF消融导管。 导管具有远端末端构件，该远侧末端构件以与导管在血管系统内的初始放置期间相对于待移除的病变处于工作关系而被设置。 提供了用于增加尖端构件的横截面轮廓从而使其移动成与被切除的病变接合的装置。 在一对双极电极之间施加RF电压用于产生用于实现切割动作的电弧，或者替代地，仅仅具有足够的RF能量以消除或以其它方式改变由远端尖端部件接合的组织表面。
-
公开(公告)号：US4976711A
公开(公告)日：1990-12-11
申请号：US337426
申请日：1989-04-13
申请人： David J. Parins , Mark A. Rydell , Peter Stasz
发明人： David J. Parins , Mark A. Rydell , Peter Stasz
CPC分类号： A61B18/1492 , A61B2017/00292 , A61B2018/00196 , A61B2018/00232 , A61B2018/1435 , A61B2018/1861 , A61M2025/1086 , A61M3/0279
摘要： A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of selected blood vessels is described. The catheter is characterized in having a tip member which during the initial placement of the catheter within the vascular system so that the distal tip member is disposed in a working relation with the lesion to be removed, means are provided for increasing the cross-sectional profile of the tip members to thereby cause it to move into engagement with the lesion to be excised. The application of an RF voltage across a pair of bipolar electrodes is used to create an electric arc for effecting the cutting action, or alternatively, just sufficient RF energy to sear or otherwise alter the tissue surfaces engaged by the distal tip member.
-
公开(公告)号：US5125928A
公开(公告)日：1992-06-30
申请号：US656799
申请日：1991-02-19
申请人： David J. Parins , Mark A. Rydell , Peter Stasz
发明人： David J. Parins , Mark A. Rydell , Peter Stasz
CPC分类号： A61B18/1492 , A61B2017/00292 , A61B2018/00196 , A61B2018/00232 , A61B2018/1435 , A61B2018/1861 , A61M2025/1086 , A61M3/0279
摘要： A RF ablation catheter for removing athero-stenotic lesions or modifying the tissue characteristics of the interior walls of selected blood vessels is described. The catheter is characterized in having a tip member which during the initial placement of the catheter within the vascular system so that the distal tip member is disposed in a working relation with the lesion to be removed, means are provided for increasing the cross-sectional profile of the tip members to thereby cause it to move into engagement with the lesion to be excised. The application of an RF voltage across a pair of bipolar electrodes is used to create an electric arc for effecting the cutting action, or alternatively, just sufficient RF energy to sear or otherwise alter the tissue surfaces engaged by the distal tip member.
摘要翻译： 描述了用于去除动脉粥样硬化狭窄病变或改变选定血管内壁的组织特征的RF消融导管。 导管的特征在于具有尖端构件，其在将导管初始放置在血管系统内期间使得远侧末端构件与待移除的病变处于工作关系中，提供用于增加横截面轮廓的装置 的尖端构件，从而使其移动成与待切除的病变接合。 在一对双极电极之间施加RF电压用于产生用于实现切割动作的电弧，或者替代地，仅仅具有足够的RF能量以消除或以其它方式改变由远端尖端部件接合的组织表面。
-
公开(公告)号：US5171311A
公开(公告)日：1992-12-15
申请号：US763559
申请日：1991-09-23
CPC分类号： A61B18/1482 , A61B18/1402 , A61B2018/00119
摘要： An instrument for performing a percutaneous laparoscopic cholecystectomy includes a generally rigid, tubular body with a proximal end, a distal end and a lumen extending between these two ends and with a pair of bipolar electrodes projecting from the distal end of the tubular body and a handle member affixed to its proximal end. The outside diameter of the tubular body is sufficiently small that it can readily pass through a cannula inserted through a puncture made through the abdominal wall. A pair of conductors, connected at one end to the bipolar electrodes and at their other end to a source of radio frequency voltage, extend through the tube's lumen and a handle. Moreover, a fluid port may be formed through the handle so as to be in fluid communication with the lumen of the tube whereby fluids may be perfused through the instrument during its use or a suction may be applied to the proximal port for aspirating the surgical site. In one embodiment of the invention, the bipolar electrodes may be formed as conductive traces extending along the peripheral edges of a thin ceramic blade. In an alternative arrangement, the bipolar electrodes comprise first and second closley space J-spaced conductive hook members.
摘要翻译： 用于进行经皮腹腔镜胆囊切除术的器械包括通常刚性的管状体，其具有近端，远端和在这两个端部之间延伸的内腔，以及从管状体的远端突出的一对双极电极和手柄 构件固定在其近端。 管状体的外径足够小，使得其可以容易地穿过插入通过腹壁制成的穿刺的套管。 在一端连接到双极电极并且在另一端连接到射频电压源的一对导体延伸穿过管的内腔和手柄。 此外，可以通过手柄形成流体端口以便与管腔流体连通，从而在使用过程中可以通过仪器灌注流体，或者可以将吸力施加到近端口以抽吸手术部位 。 在本发明的一个实施例中，双极电极可以形成为沿着薄陶瓷刀片的周边边缘延伸的导电迹线。 在替代布置中，双极电极包括第一和第二闭合空间J隔开的导电钩构件。
-
公开(公告)号：US4646742A
公开(公告)日：1987-03-03
申请号：US822385
申请日：1986-01-27
CPC分类号： A61M25/10181 , A61M25/1018 , A61M25/104
摘要： An angioplasty catheter having an outer tubular member and a coaxially aligned inner tubular member. The outer tube is of a first predetermined diameter over a majority of its length, but then tapers down, in a transition zone, to a second predetermined diameter less than the first and which extends to the catheter's distal tip. The inner tube has a distal end shaped to mate with the inside surface of the outer tube in the transition zone to form a seal when the inner tube is advanced in the distal direction. An expander is secured to the outer tube and inflatable by perfusing a fluid in the zone between the outer and inner tubes and through ports formed through the wall of the outer tube in the transition zone. By manipulating the proximal end of the inner tube, blood or other fluids may be perfused or exasperated and made to inflate or deflate the expander, the distal end of the inner tube acting as a valve, seating with the inner surface of the outer tube in the transition zone. The inner tube may be removed completely for maximum perfusion or for replacement with a guide wire or an optical fiber when performing laser angioplasty. The hub on the proximal end of the catheter body facilitates the manipulation of the aforementioned valve and the introduction of a perfusant along the length of the catheter body.
摘要翻译： 一种血管成形术导管，其具有外部管状构件和同轴对准的内部管状构件。 外管在其大部分长度上具有第一预定直径，但是在过渡区域中逐渐变细到比第一预定直径小的第二预定直径，并延伸到导管的远端。 内管具有形状与过渡区域中的外管内表面配合的远端，以在内管沿远端方向前进时形成密封。 膨胀器被固定到外管并且可以通过在外管和内管之间的区域中灌注流体并且通过在过渡区中通过外管的壁形成的端口来充气。 通过操纵内管的近端，血液或其他流体可能被灌注或激怒，并使膨胀器膨胀或放气，内管的远端作为阀，与外管的内表面对准 过渡区。 当进行激光血管成形术时，内管可以被完全去除以用于最大灌注或用导线或光纤替代。 导管主体的近端上的毂有利于上述阀的操作和沿导管主体的长度引入灌注液。
-
7.发明授权Percutaneous laparoscopic cholecystectomy instrument 失效PERCUTANEOUS LAPAROSCOPIC CHOLECYSTECTOMY INSTRUMENT
公开(公告)号：US5071419A
公开(公告)日：1991-12-10
申请号：US516740
申请日：1990-04-30
CPC分类号： A61B18/1482 , A61B18/1402 , A61B2018/00119
摘要： An instrument for performing a percutaneous laparoscopic cholecystectomy includes a generally rigid, tubular body with a proximal end, a distal end and a lumen extending between these two ends and with a pair of bipolar electrodes projecting from the distal end of the tubular body and a handle member affixed to its proximal end. The outside diameter of the tubular body is sufficiently small that it can readily pass through a cannula inserted through a puncture made through the abdominal wall. A pair of conductors, connected at one end to the bipolar electrodes and at their other end to a source of radio frequency voltage, extend through the tube's lumen and a handle. Moreover, a fluid port may be formed through the handle so as to be in fluid communication with the lumen of the tube whereby fluids may be perfused through the instrument during its use or a suction may be applied to the proximal port for aspirating the surgical site. In one embodiment of the invention, the bipolar electrodes may be formed as conductive traces extending along the peripheral edges of a thin ceramic blade. In an alternative arrangement, the bipolar electrodes comprise first and second closely spaced J-shaped conductive hook members.
-
公开(公告)号：US08409114B2
公开(公告)日：2013-04-02
申请号：US11833117
申请日：2007-08-02
申请人： David J. Parins
发明人： David J. Parins
CPC分类号： A61M25/09 , A61M25/00 , A61M2025/09175
摘要： An intracorporeal device includes a shaft having a proximal section including a first elongate member and a distal section including a tubular member and a second elongate member. A proximal region of the tubular member is attached to the distal region of the first elongate member. The second elongate member is disposed within the lumen of the tubular member, and a proximal region of the second elongate member is attached to the proximal region of the elongate tubular member. As such, in some embodiments, the tubular member can function both as a member joining the first and second elongate members, and as a structural element in the distal section of the shaft providing for desired flexibility, torqueability, and/or pushability characteristics.
摘要翻译： 体内装置包括具有近端部分的轴，所述近端部分包括第一细长部件和包括管状部件和第二细长部件的远端部分。 管状构件的近侧区域附接到第一细长构件的远侧区域。 第二细长构件设置在管状构件的内腔中，并且第二细长构件的近侧区域附接到细长管状构件的近侧区域。 因此，在一些实施例中，管状构件既可以作为连接第一和第二细长构件的构件，也可以作为轴的远侧部分中的结构元件起作用，从而提供期望的柔性，可扭转性和/或推压性。
-
公开(公告)号：US5192280A
公开(公告)日：1993-03-09
申请号：US797531
申请日：1991-11-25
申请人： David J. Parins
发明人： David J. Parins
CPC分类号： A61B18/1485 , A61B18/1402 , A61B2017/00274 , A61B2017/00292 , A61B2017/2927 , A61B2018/00547
摘要： An electrosurgical cutting instrument with bipolar electrodes integrally formed into a pivoting ceramic working head. The ceramic head is pivotable about a pivot point by selectively retracting a substantially rigid wire internal to a working element which is slidably and rotatably received within an introducer and connected to a point on the ceramic head offset from a longitudinal axis. Radial incisions are induced into a prostate gland during a transurethral resectioning of the prostate gland (TURP) by applying an RF energy across the bipolar electrodes from an external power source and drawing the electrodes across prostate gland tissue. The pivotal head can be selectively reciprocated to approximately a 90.degree. angle relative to a longitudinal axis of the introducer to effectively cauterize tissue during surgery to perform resectioning of the prostate. Increased maneuverability of the instrument allows a surgeon to more quickly and effectively complete a TURP. The electrodes may be formed in various shapes out of ductile tungsten alloy to withstand high operating temperatures depending upon the nature of the cutting desired. The cutting instrument is suitable for other surgical procedures as well performed using an endoscope.
-
公开(公告)号：US06293945B1
公开(公告)日：2001-09-25
申请号：US09518943
申请日：2000-03-06
IPC分类号： A61B1818
CPC分类号： A61B18/1402 , A61B2018/00589 , A61B2018/00601 , A61B2018/1475 , A61B2218/002 , A61B2218/007 , A61B2218/008
摘要： A surgical instrument for performing three functions at the tip of a tube. The first function is for suction or irrigation of an area where surgery is being performed. The tubing can have a vacuum attached for sucking solid particles, liquids, gases or smoke from the area adjacent the end of the tubing. The tubing may also be used to pump fluids into the area adjacent the end of the tube to flush the area or apply a treatment. The tubing has an electrical current such that when the tube is applied to blood it will coagulate the blood. The tubing also has a cutting electrode for electrically cutting tissue. The cutting electrode extends out from the lumen of the tube and retracts therein when not in use. Therefore a surgeon has three instruments compactly arranged at his disposal at the distal end of the tube. Since the tube can be made long and thin it is useful when operating in a limited space and can be used in laparascopic or other microsurgeries. The tube is malleable for shaping it for ease of use. Thus the surgeon can electrically cut, suck out blood, smoke and other debris and electrically coagulate blood all with one instrument and at preferred angles or shapes.
摘要翻译： 一种用于在管的尖端执行三个功能的外科器械。 第一个功能是吸入或灌溉正在进行手术的区域。 管道可以具有附接的真空，用于从邻近管道端部的区域吸取固体颗粒，液体，气体或烟雾。 管道也可用于将流体泵送到邻近管端的区域以冲洗该区域或施加治疗。 管道具有电流，使得当管应用于血液时，其将凝结血液。 管道还具有用于电切割组织的切割电极。 切割电极从管的内腔延伸出来，并在不使用时收缩。 因此，外科医生有三个器械紧紧地布置在管子的远端处。 由于管可制成长而薄，所以在有限的空间中操作时可以使用，并且可以用于腹腔镜或其他微型手术。 该管是可塑的，用于成形以便于使用。 因此，外科医生可以用一个器械以优选的角度或形状电切割，吸出血液，烟雾和其他碎片并使血液全部凝结。
-
-
-
-
-
-
-
-
-
搜索结果
29 条记录 (耗时 0.059 秒)
