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91. 发明授权

US06594166B2 Step-up transformer 失效
公开(公告)号：US06594166B2
公开(公告)日：2003-07-15
申请号：US10103347
申请日：2002-03-21
申请人： Yem Chin
发明人： Yem Chin
IPC分类号： H02M516
CPC分类号： H01J35/025 , H01F30/06 , H01F38/00 , H01J35/32 , H05G1/10
摘要： A step up transformer has an inert core, primary windings concentrically surrounding the inert core, and secondary windings concentrically surrounding the primary windings, the ratio of secondary windings to primary windings of up to 1,000,000:1. The step-up transformer is particularly useful in an x-ray catheter having an x-ray source in a vacuum tube and a power source. The power source can deliver a lower voltage which is stepped up at by the transformer to produce a voltage sufficient to stimulate production of x-rays by the x-ray emitter source. Methods for preparing the step-up transformer and x-ray catheter and methods of administering x-rays to subjects with the x-ray catheter of the invention are also disclosed.

92. 发明授权

US06579300B2 Steerable sphincterotome and methods for cannulation, papillotomy and sphincterotomy 有权
标题翻译：可导向括约肌切开术和插管，乳头切开术和括约肌切开术的方法
公开(公告)号：US06579300B2
公开(公告)日：2003-06-17
申请号：US09761843
申请日：2001-01-18
申请人： John A. Griego , Yem Chin
发明人： John A. Griego , Yem Chin
IPC分类号： A61B1732
CPC分类号： A61B18/1492 , A61B17/320016 , A61B17/32056 , A61B2017/003 , A61B2017/320032 , A61B2018/00166 , A61B2018/00553 , A61B2018/00601 , A61B2018/1407 , A61B2018/1437 , A61B2018/144 , A61B2018/1861
摘要： A methodology of and apparatus for accurately positioning devices for performing endoscopic cannulation, papillotomy and sphincterotomy and similar procedures. The sphincterotome with a steerable or adjustable distal segment of the present invention allows the physician to control the position of the distal tip of the device independently of the endoscope and adjust for inconsistencies in the device and the anatomy. According to one embodiment of the present invention, a threaded portion of a cable assembly cooperates with a torque transmission element and a cog to enable the operator to rotate a cutting wire into a desired position relative to the catheter. Alternate embodiments allow the operator to fix the depth of a needle knife while allowing, if desired, accurate rotational positioning of the associated catheter. Threaded stabilizing elements, pivot elements and a steering wire may be used together or individually to accomplish these features.
摘要翻译：用于精确定位用于进行内窥镜插管，乳头切开术和括约肌切开术的装置的方法和装置以及类似的程序。具有本发明的可转向或可调节的远端段的括约肌切片机允许医师独立于内窥镜来控制装置的远侧末端的位置，并且针对装置和解剖结构中的不一致性进行调整。根据本发明的一个实施例，电缆组件的螺纹部分与转矩传递元件和齿轮协作，以使操作者能够将切割线相对于导管旋转到期望的位置。替代实施例允许操作者固定针刀的深度，同时允许相关导管的精确的旋转定位。螺纹稳定元件，枢转元件和操纵线可以一起使用或单独使用以实现这些特征。

93. 发明授权

US06235040B1 Single pull wire multiple band ligator 有权
标题翻译：单拉线多带结扎器
公开(公告)号：US06235040B1
公开(公告)日：2001-05-22
申请号：US09157577
申请日：1998-09-21
申请人： Michael S. H. Chu , Yem Chin
发明人： Michael S. H. Chu , Yem Chin
IPC分类号： A61B1710
CPC分类号： A61B17/12013 , A61B2017/12018
摘要： A ligating band dispenser comprises a substantially cylindrical first support surface capable of holding a plurality of first ligating bands. The first support surface has a first channel extending substantially axially therethrough and a plurality of first slots extending away from a distal end thereof through at least a portion of the first support surface. A plurality of increased diameter abutting portions define a plurality of segments of a pull line extending through the slots with each of the abutting portions being retained within the channel by contact with a corresponding one of the slots. Each of the segments loops around a corresponding one of the ligating bands to releasably couple the pull line to the ligating bands.
摘要翻译：结扎带分配器包括能够保持多个第一结扎带的基本上圆柱形的第一支撑表面。第一支撑表面具有基本上轴向延伸穿过其中的第一通道以及从其远端延伸穿过第一支撑表面的至少一部分的多个第一狭槽。多个增加直径的邻接部分限定了延伸穿过狭槽的拉线的多个段，其中每个邻接部分通过与相应的一个狭槽接触而保持在通道内。每个片段环绕相应的一个结扎带，以将拉线可释放地耦合到结扎带。

94. 发明授权

US6042577A Retention mechanism for catheter with distal anchor 有权
标题翻译：导管与远端锚的保留机制
公开(公告)号：US6042577A
公开(公告)日：2000-03-28
申请号：US249487
申请日：1999-02-12
申请人： Michael S. H. Chu , Yem Chin
发明人： Michael S. H. Chu , Yem Chin
IPC分类号： A61M25/01 , A61M25/04 , A61M25/00
CPC分类号： A61M25/0105 , A61M25/04
摘要： A mechanism for use with an anchoring structure of a drainage catheter. A suture thread as a flexible link extends from the distal end of a catheter through the catheter lumen to the mechanism at the proximal end of the catheter. The mechanism includes a distal body affixed to the proximal end of the catheter and a proximal body that can be displaced axially with respect to the distal body between clamping and unclamped positions. In a clamped position, the bodies clamp the suture thread to prevent inadvertent displacement of the suture thread. Displacement of the proximal body in certain embodiments takes up slack in the suture thread generated when the anchor forms.
摘要翻译：一种与排水导管的锚定结构一起使用的机构。作为柔性连接的缝合线从导管的远端延伸穿过导管内腔到导管近端处的机构。该机构包括固定到导管的近端的远侧主体和可在夹紧位置和未夹紧位置之间相对于远侧主体轴向移位的近端体。在夹紧位置，主体夹紧缝合线以防止缝合线的无意移位。在某些实施例中，近端体的位移在锚形成时产生的缝合线中松弛。

95. 发明授权

US5989223A Rotatable medical valve closure 失效
标题翻译：可旋转医疗阀门关闭
公开(公告)号：US5989223A
公开(公告)日：1999-11-23
申请号：US597338
申请日：1996-02-06
申请人： Michael S. H. Chu , Yem Chin , Andrew Cragg , Barry N. Gellman
发明人： Michael S. H. Chu , Yem Chin , Andrew Cragg , Barry N. Gellman
IPC分类号： A61M39/06 , A61M39/28 , A61M5/178
CPC分类号： A61M39/10 , A61M39/0613 , A61M39/286 , A61M2039/1077 , A61M39/26
摘要： A medical closure device for providing a passage into or out of the body. A resilient member at least partially defines the passage, and a two-part body is disposed to permit relative rotation its parts about the passage axis. The first body portion compresses and supports the resilient member. Cam surfaces on the second body control a compression member which is disposed in a radially extending aperture of the first body portion and biased radially outwardly by the resilient member to maintain contact with the cam surface. Relative rotation of the body portions about the axis moves the cam surface relative to the compression member, causing radial displacement of the compression member from a first position (in which the passage is relatively uncompressed and open) to a second position (in which the passage is restricted).
摘要翻译：用于提供进入或离开身体的通道的医疗闭合装置。弹性构件至少部分地限定通道，并且设置两部分主体以允许其部分围绕通道轴线相对旋转。第一主体部分压缩和支撑弹性构件。第二主体上的凸轮表面控制压缩构件，该压缩构件设置在第一主体部分的径向延伸的孔中并由弹性构件径向向外偏压以保持与凸轮表面的接触。主体部分围绕轴的相对旋转使凸轮表面相对于压缩构件移动，从而使压缩构件从第一位置（其中通道相对未压缩和打开）的径向位移到第二位置（其中通道被限制）。

96. 发明授权

US5989196A Biopsy needle 失效
标题翻译：活检针
公开(公告)号：US5989196A
公开(公告)日：1999-11-23
申请号：US879670
申请日：1997-06-23
申请人： Michael S. H. Chu , Yem Chin , James Bates
发明人： Michael S. H. Chu , Yem Chin , James Bates
IPC分类号： A61B10/02 , A61B10/00 , A61B5/00
CPC分类号： A61B10/0275 , A61B2010/0208
摘要： A biopsy needle device includes an outer cannula having a pointed, tissue penetrating distal end and a side-notched stylet located within the cannula. The stylet and cannula are axially movable with respect to each other. The stylet is constructed from a solid rod having a notch near the distal end. The notch is bordered in portions along its length by a walled region to at least in part define a protected sample-containment space. The stylet includes a pointed, tissue penetrating distal end. The notch defines a full cylindrical region and the walled region has a semi-circular cross-section. The cross sectional area of the notch is between about 90-97% of the diameter of the rod. The wall thickness of the walled region is in the range of 0.008"-0.013". A method of taking a biopsy sample from a hard cancerous lesion is described.
摘要翻译：活检针装置包括具有尖锐的组织穿透远端的外套管和位于插管内的侧切口针刺针。探针和套管可以相对于彼此轴向移动。探针由远端附近具有凹口的实心棒构成。该凹口沿其长度的一部分边界通过一个壁区域，以至少部分地限定受保护的样品容纳空间。探针包括一个尖锐的，组织穿透的远端。凹口限定了一个完整的圆柱形区域，并且该围壁区域具有半圆形横截面。切口的横截面积在杆的直径的大约90-97％之间。壁面积的壁厚在0.008“〜0.013”的范围内。描述了从硬性癌性病变中取出活检样本的方法。

97. 发明授权

US5968056A Device and method for severing lesions 失效
标题翻译：用于切断病变的装置和方法
公开(公告)号：US5968056A
公开(公告)日：1999-10-19
申请号：US969500
申请日：1997-11-13
申请人： Michael S. H. Chu , Yem Chin
发明人： Michael S. H. Chu , Yem Chin
IPC分类号： A61B17/12 , A61B17/32 , A61B17/3211 , A61B18/14 , A61B17/04
CPC分类号： A61B17/32056 , A61B17/12013 , A61B18/14 , A61B2017/12018 , A61B2017/32004 , A61B2018/00291 , A61B2018/1407
摘要： A system for severing lesions within a living body includes a housing defining an interior tissue receiving chamber is coupled to the distal end of an endoscope. At least one snare extends around the ligating band supporting surface so that, when at least one ligating band is received around the ligating band supporting surface, drawing the at least one snare off the ligating band supporting surface releases a corresponding ligating band from the ligating band supporting surface. In addition, a method for severing tissue comprises the steps of introducing into the body an endoscope to which a housing defining an interior tissue receiving chamber is coupled, wherein at least one snare and at least one ligating band extend around the ligating band supporting surface and advancing the distal end of the endoscope into the body until the housing is located adjacent to a first portion of tissue to be severed. The first portion of tissue is then drawn into the interior chamber and a snare is drawn off the distal end of the housing to release a corresponding ligating band from the ligating band supporting surface so that the ligating band and the snare encircle the first portion of tissue.
摘要翻译：用于切断生物体内的病变的系统包括限定内部组织接收室的壳体，其联接到内窥镜的远端。至少一个圈套围绕结扎带支撑表面延伸，使得当至少一个结扎带被接纳在结扎带支撑表面周围时，将结扎带支撑表面上的至少一个圈套从连接带释放相应的结扎带支撑面。另外，用于切断组织的方法包括以下步骤：将限定内部组织接收室的壳体连接到内部的内窥镜，其中至少一个圈套和至少一个结扎带围绕结扎带支撑表面延伸，将内窥镜的远端推进到体内，直到外壳位于与被切断的组织的第一部分相邻的位置。然后将组织的第一部分拉入内部腔室，并且将球笼从壳体的远端排出以从结扎带支撑表面释放相应的结扎带，使得结扎带和圈套环绕组织的第一部分。

98. 发明授权

US5961526A Coaxial needle and severing snare 失效
标题翻译：同轴针和切断圈套
公开(公告)号：US5961526A
公开(公告)日：1999-10-05
申请号：US25499
申请日：1998-02-18
申请人： Michael S. H. Chu , Yem Chin
发明人： Michael S. H. Chu , Yem Chin
IPC分类号： A61B17/221 , A61B17/00 , A61B17/30 , A61B17/32 , A61B17/34 , A61B18/14 , A61B17/24
CPC分类号： A61B17/32056 , A61B17/3478 , A61B18/1477 , A61B2017/00269 , A61B2017/00349 , A61B2017/00353 , A61B2017/306 , A61B2018/1407 , A61B2018/1425
摘要： A device for treating a lesion comprises a sheath extending from a proximal end which, in an operative position, is located outside the body, to a distal end which, in the operative position is located within the body. A needle extending through the sheath has a tissue piercing distal tip and a central lumen extending through the needle from a proximal port to a distal opening formed in the distal tip and a needle actuator is provided for moving the needle between a retracted position in which the distal tip is received within the sheath to an injection position in which the distal tip extends distally beyond a distal end of the sheath. A snare extends within the lumen to a loop formed in a distal end of the snare and a snare actuator is provided for moving the snare between a covered position in which the loop is received within the lumen and an extended position in which the loop extends distally from the lumen beyond the distal tip.
摘要翻译：用于治疗病变的装置包括护套，所述护套从位于身体外部的操作位置的近端延伸到在所述操作位置位于所述主体内的远端。延伸穿过护套的针头具有组织刺穿的远侧末端和中心管腔，该中心管腔从近端口延伸穿过远端开口，远端开口形成在远侧末端，并且提供针致动器用于在缩回位置之间移动针头，远侧末端被容纳在护套内到注射位置，其中远侧末端向远侧延伸超过护套的远端。管腔在管腔内延伸到形成在圈套的远端中的环，并且提供圈套致动器用于将圈套移动到环内容纳在内腔中的覆盖位置和延伸位置之间，其中环延伸到远端从内腔超过远端。

99. 发明授权

US5928208A Retention mechanism for catheter with distal anchor 失效
公开(公告)号：US5928208A
公开(公告)日：1999-07-27
申请号：US921285
申请日：1997-08-29
申请人： Michael S.H. Chu , Yem Chin
发明人： Michael S.H. Chu , Yem Chin
IPC分类号： A61M25/01 , A61M25/04 , A61M25/00
CPC分类号： A61M25/0105 , A61M25/04
摘要： A mechanism for use with an anchoring structure of a drainage catheter. A suture thread as a flexible link extends from the distal end of a catheter through the catheter lumen to the mechanism at the proximal end of the catheter. The mechanism includes a distal body affixed to the proximal end of the catheter and a proximal body that can be displaced axially with respect to the distal body between clamping and unclamped positions. In a clamped position, the bodies clamp the suture thread to prevent inadvertent displacement of the suture thread. Displacement of the proximal body in certain embodiments takes up slack in the suture thread generated when the anchor forms.

100. 发明授权

US5916145A Device and method of using a surgical assembly with mesh sheath 有权
标题翻译：使用具有网状护套的手术组件的装置和方法
公开(公告)号：US5916145A
公开(公告)日：1999-06-29
申请号：US130784
申请日：1998-08-07
申请人： Michael S. H. Chu , Yem Chin
发明人： Michael S. H. Chu , Yem Chin
IPC分类号： A61B1/00 , A61B1/018 , A61B1/12 , A61B1/005
CPC分类号： A61B1/00154 , A61B1/00071 , A61B1/00082 , A61B1/018 , A61B1/0055 , A61B1/12 , A61B1/2736 , A61B1/31
摘要： An endoscopic assembly, utilizing a braided mesh material as an expandable sheath, is disclosed. The mesh sheath is adapted to receive an endoscope for viewing the interior of a body cavity or lumen and one or more channels for performing medical procedures within the patient. The mesh sheath expands laterally as it is compressed longitudinally, which allows it to come into contact with the interior of the body cavity. By doing so, it can anchor the assembly, take samples from the body cavity, or dilate a stricture in the body cavity. Additional dilation procedures can be performed by removing the endoscope and inserting other instruments without removing the entire assembly from the patient. The body cavity can be hermetically sealed to reduce the risk of contamination of the endoscope and channels.
摘要翻译：公开了一种使用编织网状材料作为可扩张护套的内窥镜组件。网状护套适于接收用于观察体腔或内腔的内窥镜和用于在患者体内进行医疗程序的一个或多个通道。网状护套纵向压缩时横向膨胀，使其与体腔内部接触。通过这样做，它可以锚定组件，从体腔取样或扩大体腔内的狭窄。可以通过去除内窥镜和插入其他器械而不从患者身体移除整个组件来进行额外的扩张手术。体腔可以密封，以减少内窥镜和通道的污染风险。

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