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公开(公告)号：US4793351A
公开(公告)日：1988-12-27
申请号：US62786
申请日：1987-06-15
申请人： Mark S. Landman , Steven R. LeMott
发明人： Mark S. Landman , Steven R. LeMott
CPC分类号： A61M25/10185 , A61M25/0067 , A61M25/10 , A61M25/1018 , A61M2025/1077
摘要： A medical device consists of an elongated catheter having a distal portion and a proximal portion, an inflatable balloon associated with the distal portion of the catheter and a valve member associated proximally with at least one lumen communicating with the volume of the balloon. In one embodiment, the valve member has a first position for connection of the first lumen to a source of liquid for introduction into the balloon and for connection of the second lumen to atmosphere for venting of gas displaced from the balloon by the liquid, and the valve member has a second position for connection of the first and second lumens to inflation/deflation means for flow of liquid into and rapidly out of the balloon via both lumens simultaneously. In another embodiment, a valve member is associated proximally with the second lumen, the valve member having a first position for connection of the second lumen to atmosphere for venting of gas displaced from the balloon by the liquid, and the valve member having a second position for closure of the second lumen. In both embodiments, the valve member is adapted for selective adjustment as required during use of the device between the first position for venting of gas from the device and the second position. Other embodiments include a stiffening member for varying catheter stiffness, and a catheter having proximal and distal portions formed of different materials. Methods of re-venting the balloon catheter, and varying catheter stiffness during use are also described.
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公开(公告)号：US08845518B2
公开(公告)日：2014-09-30
申请号：US11373453
申请日：2006-03-09
IPC分类号： A61B1/04
CPC分类号： A61B1/00082 , A61B1/00135 , A61B1/00142 , A61B1/00156 , A61B1/005 , A61B1/012 , A61B1/015 , A61B1/267 , A61B1/2676 , A61B1/273 , A61B17/3421 , A61B2017/3486 , A61M25/0662 , A61M25/1011
摘要： Apparatus and methods for attaching and forming enclosed inflatable members on an endoscope assembly with a disposable sheath are disclosed. In one embodiment, an apparatus includes a flexible and resilient cuff member that is positioned on the outer surface of the disposable sheath and sealably and fixedly bonded to the sheath cover material at the cuff edges to form an annular space capable of being inflated. The inflatable member formed thereby is inflated through a lumen internal to the sheath that has an opening into the interior annular space. The inflatable member may be inflated to exert a longitudinal force on the insertion tube, thereby moving the endoscope assembly along a body passage. Alternately, a sheath may include a plurality of inflatable cuffs that may be inflated to create an isolated space therebetween within the body passage.
摘要翻译： 公开了用于将封闭的可膨胀构件附接和成形在具有一次性护套的内窥镜组件上的装置和方法。 在一个实施例中，一种装置包括柔性和弹性的袖口构件，其定位在一次性护套的外表面上并且在袖带边缘处可密封地且牢固地结合到护套覆盖材料，以形成能够膨胀的环形空间。 由此形成的可膨胀构件通过具有到内部环形空间的开口的护套内部的内腔膨胀。 充气构件可以被充气以在插入管上施加纵向力，从而沿着身体通道移动内窥镜组件。 或者，护套可以包括多个可膨胀的袖带，其可被充气以在身体通道内产生隔离空间。
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3.发明授权Endoscopic sheath assemblies having longitudinal expansion inhibiting mechanisms 有权具有纵向膨胀抑制机制的内窥镜护套组件公开(公告)号：US06793661B2
公开(公告)日：2004-09-21
申请号：US10313848
申请日：2002-12-05
IPC分类号： A61M500
CPC分类号： A61B1/018 , A61B1/00082 , A61B1/00135 , A61B1/00142 , A61B1/00154 , A61B1/005 , A61B1/0051 , A61B1/012 , A61B1/267 , A61B1/2676 , A61B1/273 , A61B17/3421 , A61B2017/3486 , A61M25/1011
摘要： Methods and apparatus for inhibiting longitudinal expansion of a body portion of an endoscopic sheath during inflation of an inflatable member are disclosed. In one embodiment, a sheath assembly includes a body portion adapted to encapsulate a distal end of an insertion tube, and an inflatable member coupled to the body portion and adapted to be inflated radially outwardly from the body portion. The sheath assembly further includes an expansion-inhibiting mechanism coupled to at least one of the inflatable member and the body portion. The expansion-inhibiting mechanism advantageously inhibits a longitudinal expansion of the body portion during inflation of the inflatable member. The expansion-inhibiting mechanism may assume a variety of embodiments, including, for example, a non-compliant member, a longitudinally-stretched portion, a reinforcing spring member, a pressure relief device, or a suitable detent mechanism.
摘要翻译： 公开了用于在充气构件充胀期间抑制内窥镜护套的主体部分的纵向膨胀的方法和装置。 在一个实施例中，护套组件包括适于封装插入管的远端的主体部分和联接到主体部分并且适于从身体部分径向向外膨胀的可充气构件。 鞘组件还包括联接到可膨胀构件和主体部分中的至少一个的膨胀抑制机构。 膨胀抑制机构有利地在充气构件充胀期间抑制主体部分的纵向膨胀。 膨胀抑制机构可以采取各种实施例，包括例如不顺从构件，纵向拉伸部分，加强弹簧构件，压力释放装置或适当的制动机构。
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公开(公告)号：US06530881B1
公开(公告)日：2003-03-11
申请号：US09611628
申请日：2000-07-07
IPC分类号： A61B104
CPC分类号： B29C55/22 , A61B1/00142 , B29L2031/753
摘要： A thin-walled elastic sheath that can be stretched axially over an elongated imaging device to closely conform to the device and isolate the device from an external environment, and a method of forming such a sheath, are shown and described. The method includes the steps of heating at least a portion of a sheet of an elastomeric material to an elevated temperature to form a malleable heated portion of the sheet, pressing an elongated forming tool against the sheet at a location central with respect to the heated portion of the sheet, stretching the heated portion of the elastomeric material with the forming tool until an elastic conforming portion of the sheet is conformed to at least a portion of the length of the forming tool, and removing the forming tool from the conforming portion of the sheet to leave the thin-walled, elastic sheath having a wall thickness approximately equal to or less than 0.006 inches.
摘要翻译： 可以在细长的成像装置上轴向拉伸以紧密地符合装置并将装置与外部环境隔离的薄壁弹性护套以及形成这种护套的方法。 该方法包括以下步骤：将弹性体材料的片材的至少一部分加热到高温以形成片材的可延展的加热部分，将细长成形工具压靠在相对于加热部分中心的位置处的片材上 使用成形工具拉伸弹性体材料的加热部分，直到片材的弹性适形部分与成形工具的长度的至少一部分一致，并从成形工具的适形部分移除成形工具 使薄壁的弹性护套具有约等于或小于0.006英寸的壁厚。
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公开(公告)号：US5385152A
公开(公告)日：1995-01-31
申请号：US62058
申请日：1993-05-14
CPC分类号： A61M29/00 , A61B17/22 , A61M25/09 , A61B2017/22038 , A61B2017/22042 , A61B2017/22044 , A61M2025/09175 , A61M25/104 , A61M29/02
摘要： A steerable guidewire for gently penetrating an occlusion within a vessel, with an elongated solid main guidewire body having selected stiffness characteristics along its length to allow the guidewire to be urged through a narrow, tortuous body lumen by application of forces at a proximal end, and an enlarged distal end portion having a diameter larger than portions of the guidewire proximal thereof including a soft polymeric element and a permanently deflected portion to enable steering of the guidewire.
摘要翻译： 一种可导向的导丝，用于轻轻穿透血管内的闭塞，其中细长的实心主导丝主体具有沿其长度的选定刚度特征，以允许导线通过在近端施加力而被推动通过狭窄的曲折的体腔，以及 具有大于其导丝部分的直径的扩大的远端部分包括柔性聚合物元件和永久偏转部分，以使导向线能够转向。
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公开(公告)号：US5303714A
公开(公告)日：1994-04-19
申请号：US62050
申请日：1993-05-14
CPC分类号： A61M29/00 , A61B17/22 , A61M25/09 , A61B2017/22038 , A61B2017/22042 , A61B2017/22044 , A61M2025/09175 , A61M25/104 , A61M29/02
摘要： A guidewire for penetrating an occlusion within a duct or vessel, such as a blood vessel, has an elongated main guidewire body of a small, first diameter. The guidewire is terminated at its distal end with an enlarged resilient tip portion having a lubricious outer surface, and is shaped and constructed to penetrate the occlusion. The guidewire body is constructed to be to be relatively flexible in the distal end corresponding to the enlarged tip and relatively stiffer in portions proximal thereof for manipulation of the wire from its proximal end to cause the distal tip portion to penetrate the occlusion and form a passage therein. In an embodiment, an outer sleeve is slid over the main body and butting against the proximal end of the enlarged tip portion contributes to axial stiffness of the combination to enable manipulation through the occlusion. After placement this sleeve is removed and a dilatation catheter is slid over the main body, and enters the occlusion behind the enlarged tip portion.
摘要翻译： 用于穿透管道或容器（例如血管）内的闭塞的导丝具有细小的第一直径的主导丝主体。 导丝在其远端端部具有扩大的具有光滑外表面的弹性尖端部分，并且被成形并构造为穿透遮挡物。 导丝体被构造成在对应于扩大的尖端的远端中相对柔性，并且在其近端部分相对较硬，用于从其近端操作线，以使远侧末端部分穿透闭塞并形成通道 其中。 在一个实施例中，外套筒在主体上滑动，并且抵靠扩大的尖端部分的近端抵靠组合的轴向刚度，以使得能够通过闭塞进行操纵。 在放置之后，将该套筒移除并且扩张导管在主体上滑动，并进入扩大的尖端部分后面的闭塞。
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