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1. 发明申请

WO2004067062A3 EXPANDABLE BORE INJECTION NEEDLE 审中-公开
标题翻译：可膨胀的注射针
公开(公告)号：WO2004067062A3
公开(公告)日：2006-05-04
申请号：PCT/US2004002447
申请日：2004-01-28
申请人： DURECT CORP
发明人： GILLIS EDWARD M , FILICE JAMES A , BROWN JIM , RAMPERSAUD CHARLES , POUTIATINE ANDREW , ARGONZA DANNY
IPC分类号： A61B17/34 , A61M20060101 , A61M5/178
CPC分类号： A61B17/3468 , A61B17/3439
摘要： The present invention is a trocar/cannula assembly that is capable of delivering large-diameter objects/fluids into a body cavity interior, while minimizing the puncture footprint left after insertion. Generally, the invention could be a composite needle (12) having a composite wall (18) forming a trocar shaft (18) with at least two rigid elements (20), and flexible material (26) therebetween, which together at least partially define a trocar bore having a diameter, and a puncture tip (30). Together these elements enable the composite wall to flex outward so as to increase the diameter of the trocar bore. Additionally, the present invention could also be described as an expandable bore trocar/cannula that is made up of an expandable cannula body (40) having an interior channel that is capable of flexing radially outward, and a trocar tip associated with the cannula body to facilitate the insertion of the trocar/cannula into a patient.
摘要翻译：本发明是一种套管针/套管组件，其能够将大直径物体/流体输送到体腔内部，同时最小化插入后留下的穿刺足迹。通常，本发明可以是具有形成具有至少两个刚性元件（20）的套管针轴（18）的复合壁（18）和其间的柔性材料（26）的复合针（12），其一起至少部分地限定具有直径的套管针孔和穿刺尖端（30）。这些元件一起使得复合壁向外弯曲，从而增加套管针孔的直径。另外，本发明还可以被描述为由可扩张的套管主体（40）构成的可扩展的套管针/套管，其具有能够径向向外弯曲的内部通道，以及与插管主体相关联的套针针头有助于套管针/套管插入患者体内。

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