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专利名称：Methods and apparatus for occluding a
blood vessel
发明人：Dwight P. Morejohn,Ivan Sepetka,Son M. Gia申请号：US09/049463申请日：19980327公开号：US06042563A公开日：20000328
摘要：An improved method and apparatus for occluding a blood vessel is shown anddescribed. A cannula adapted for insertion through a wall of a blood vessel is providedwith an expandable member on a distal end which when expanded, substantially fills across-sectional annular area of the lumen of the blood vessel. An external clamp iscoupled to the cannula and aligned with the expandable member, such that when theclamp is engaged, it moves the annular region of the blood vessel into contact with theinflatable member, the inflatable member and clamp thereby working in cooperation toocclude the blood vessel. The cannula may further be provided with a plurality of lumensextending through the cannula to corresponding openings in a distal end of the cannula,thereby allowing the perfusion of different fluids into the lumen of the blood vessel,both upstream and downstream of the internal occluding member, as well as the ventingof fluid from the lumen of the blood vessel. A suture tourniquet may also be coupled tothe cannula. Multiple functions are therefore performed by a compact, efficient devicethat is simple to use. In addition, occlusion is achieved with minimal deformation to theblood vessel, reducing the risk of trauma to the blood vessel and the creation of emboli.The intraluminal occlusion device is also securely held in a selected position, thereby
reducing risk of harm to the patient from emboli and undesirable blocking of perfusionof blood to the rest of the patient's body.
申请人：CARDIOTHORACIC SYSTEMS, INC.
代理机构：Lyon & Lyon LLP
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