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31. 发明授权

US5441482A Jet driven surgical suction device and method of using 失效
标题翻译：射流驱动手术吸引装置及使用方法
公开(公告)号：US5441482A
公开(公告)日：1995-08-15
申请号：US241284
申请日：1994-05-11
申请人： Cynthia T. Clague , Perry L. Blackshear, Jr.
发明人： Cynthia T. Clague , Perry L. Blackshear, Jr.
IPC分类号： A61M1/00 , A61M1/34 , A61M1/36 , A61M25/00
CPC分类号： A61M1/0084 , A61M1/0058 , A61M1/0076 , A61M1/3496 , A61M1/3626
摘要： A probe for use in collecting liquids entrained with a gaseous component, particularly collecting a patient's blood with entrained gas bubbles from a surgical site for autologous reinfusion. The probe separates the gaseous component from the collected liquid, particularly separating air bubbles from blood cells to inhibit hemolysis, platelet degradation and protein denaturation. An elongated probe body has a distal end to be inserted into the liquid to be collected through an inlet by jet pump action into a centrally disposed mixing chamber. A diffuser is formed within the probe body proximal to and in axial alignment with the inlet and mixing chamber leading to a liquid exit. A jet pump nozzle is formed in the probe distal tip surrounding the inlet in the form of an annular chamber into which pressurized drive fluid is introduced through a distribution channel system extending along the probe body from the proximal end. The drive fluid is ejected in a swirling vortex from the jet pump nozzle around the periphery of the mixing chamber effecting a sub-atmospheric pressure for suctioning the liquid to be collected and the gaseous component thereof into the inlet and mixing chamber. The drive fluid mixes therewith in the swirling vortex and propels the mixture into the diffuser while concentrating the gaseous component in the center of the swirling vortex as a stream. A gas evacuation tube is oriented in the centrally disposed concentrated gaseous stream for evacuating the gaseous component from the mixture before it is propelled into the diffuser. In the autologous reinfusion context, the entrained air bubbles are concentrated and removed in the probe from the blood as they are suctioned into the swirling vortex to reduce hemolysis. When mixed in the vortex, the blood and drive fluid mixture is pressurized to inhibit further air bubble formation.
摘要翻译：用于收集夹带有气体组分的液体的探针，特别是从外科手术部位用于自体回输的夹带的气泡收集患者的血液。探针从收集的液体中分离气体成分，特别是从血细胞中分离气泡，以抑制溶血，血小板降解和蛋白质变性。细长的探针体具有远端，以通过喷射泵作用将入口插入到待收集的液体中进入中心设置的混合室。在探针主体内部形成扩散器，该扩散器接近于入口和混合室并且与入口和混合室轴向对准，导致液体出口。喷射泵喷嘴形成在环形腔室形式的围绕入口的探头远端尖端中，加压驱动流体通过沿着探针主体从近端延伸的分配通道系统引入该喷嘴泵喷嘴。驱动流体以旋转的涡流从喷射泵喷嘴喷射到混合室的周边，从而产生低于大气压的压力，用于将待收集的液体和其气态组分吸入入口和混合室。驱动流体与漩涡涡流混合，并将混合物推进到扩散器中，同时将气态组分作为流以浓缩的涡旋涡旋的中心。气体排出管被定向在中心设置的浓缩气流中，用于在气体成分被推入扩散器之前从混合物中排出。在自体回输的情况下，当吸入的涡流中的夹带气泡在探针中被浓缩并从血液中除去，以减少溶血。当在涡流中混合时，血液和驱动流体混合物被加压以抑制进一步的气泡形成。

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