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1. 发明授权

US5507795A Catheter with perfusion system 失效
标题翻译：导管与灌注系统
公开(公告)号：US5507795A
公开(公告)日：1996-04-16
申请号：US236485
申请日：1994-04-29
申请人： Andrew L. Chiang , Jeffrey W. Krier , Ron R. Hundertmark , Robert T. Chang , Grace Y. Schulz
发明人： Andrew L. Chiang , Jeffrey W. Krier , Ron R. Hundertmark , Robert T. Chang , Grace Y. Schulz
IPC分类号： A61B17/00 , A61B17/22 , A61M29/02 , A61B17/32 , A61B17/14
CPC分类号： A61B17/320783 , A61B2017/00685 , A61B2017/22038 , A61B2017/22052 , A61B2017/22069 , A61M2025/1097
摘要： Improved atherectomy catheters and methods of use are disclosed. The catheter includes a flexible body with a longitudinal passage therethrough. A housing is mounted at the distal end, with an elongated aperture formed in a lateral side. A drive cable is disposed in the passage of the catheter body, and a working element is disposed in the housing, attached to the distal end of the drive cable. Passages and openings are provided for flowing blood into the housing and for flowing blood from a proximal to a distal side of the cutting blade. An impeller can be provided proximal to the cutting blade to impel blood into the housing and past the blade. Blood flows through the housing and past the blade so as to perfuse tissue downstream from the device.
摘要翻译：公开了改进的粥样斑块切除术导管和使用方法。导管包括具有穿过其中的纵向通道的柔性体。壳体安装在远端，其中形成在侧面的细长孔。驱动电缆设置在导管主体的通道中，并且工作元件设置在壳体中，附接到驱动电缆的远端。提供通道和开口，用于将血液流入壳体并用于使血液从切割刀片的近侧流到远侧。可以在切割刀片附近设置叶轮以将血液推进到壳体中并通过叶片。血液流过壳体并经过刀片，从而将组织向装置下游灌注。

2. 发明授权

US5632754A Universal catheter with interchangeable work element 失效
标题翻译：具有可互换工作元件的通用导管
公开(公告)号：US5632754A
公开(公告)日：1997-05-27
申请号：US363142
申请日：1994-12-23
申请人： Brian Farley , Ron R. Hundertmark , Grace Y. Schulz
发明人： Brian Farley , Ron R. Hundertmark , Grace Y. Schulz
IPC分类号： A61B17/00 , A61B17/22 , A61M25/00 , A61M25/18 , A61M29/02 , A61D17/32
CPC分类号： A61B17/3207 , A61M25/00 , A61B17/320783 , A61B2017/00464 , A61B2017/22075 , A61M2025/1097
摘要： Disclosed herein is an intravascular universal catheter having interchangeable work elements and methods of use thereof. The catheter comprises a flexible catheter body having a distal end, a proximal end and a lumen extending between the ends. A housing having an open interior and an aperture on a lateral side is attached to the distal end of the catheter body by a coupling element. A work element is movably disposed within the housing and operative through the aperture. A work element connector is disposed in a lumen of the catheter body and has a distal end connected to the work element. At least the distal portion of the lumen defines a receiving space within the catheter body, and the coupling element is configured to allow retraction of the work element from the housing through the open proximal end into the receiving space. In a preferred embodiment, perfusion ports are disposed in the catheter body and the housing proximate to the junctional region of the catheter body with the housing. The perfusion ports are in communication with the lumen. The work element may be withdrawn from the housing proximal to the perfusion ports to allow blood to flow into the housing and bypass the work element for perfusion of tissue downstream. Preferably, the lumen is configured to allow the work element to be completely withdrawn from the catheter body, so as to permit interchange of various work elements.
摘要翻译：本文公开了具有可互换的工作元件的血管内通用导管及其使用方法。导管包括具有远端，近端和在端部之间延伸的内腔的柔性导管本体。具有开口内部和外侧的孔的壳体通过联接元件附接到导管主体的远端。工作元件可移动地设置在壳体内并通过孔径操作。工作元件连接器设置在导管主体的内腔中，并具有连接到工作元件的远端。至少管腔的远端部分限定了导管主体内的容纳空间，并且联接元件构造成允许工作元件从壳体通过开放的近端缩回到容纳空间中。在优选实施例中，灌注端口设置在导管主体中，并且壳体靠近导管主体与壳体的连接区域。灌注口与管腔连通。工作元件可以从靠近灌注端口的壳体中取出，以允许血液流入壳体并绕过工作元件以灌注下游的组织。优选地，内腔被配置为允许工作元件从导管主体完全退出，以便允许各种工作元件的交换。

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