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1. 发明授权

US5326236A Compliant rotor for an improved cartridge for drug infusion pump 失效
标题翻译：用于药液输注泵的改进药筒的转子
公开(公告)号：US5326236A
公开(公告)日：1994-07-05
申请号：US126461
申请日：1993-09-24
申请人： Thomas A. Kramer , Mike Lawless , Stephen J. Kreinick , John D. Gjata
发明人： Thomas A. Kramer , Mike Lawless , Stephen J. Kreinick , John D. Gjata
IPC分类号： A61M5/142 , F04B43/12
CPC分类号： A61M5/14232 , F04B43/123
摘要： An improved rotor for use with a segmented peristaltic cartridge comprising a housing and a cover for assembly, said assembled housing and cover defining a pumping chamber which holds the improved rotor, a rotor sleeve and a section of flexible tubing wrapped around the rotor and connected to respective inlet and outlet ports of the cartridge. The flexible rotor includes an eccentric structure wherein flexible beam members provided on an outer surface of the rotor form a compliant member which improves the flexibility of the rotor assembly to avoid excessive compression loads or high torque and/or dynamic leak back or low torque for the tubing in the cartridge.
摘要翻译：一种改进的转子，用于与分段的蠕动筒一起使用，其包括壳体和用于组装的盖，所述组装的壳体和盖限定了泵送室，其保持改进的转子，转子套筒和缠绕在转子周围的一段柔性管，盒的相应入口和出口。柔性转子包括偏心结构，其中设置在转子的外表面上的柔性梁构件形成柔性构件，其改善了转子组件的柔性，以避免过大的压缩载荷或高扭矩和/或动态泄漏回转或低扭矩墨盒中的管路。

2. 发明授权

US06494694B2 Disposable infusion cassette with low air bubble retention and improved valves 有权
标题翻译：具有低气泡保持力和改进阀门的一次性输液盒
公开(公告)号：US06494694B2
公开(公告)日：2002-12-17
申请号：US09842529
申请日：2001-04-25
申请人： Mike W. Lawless , Alex P. Soberon , Scott M. Defenbaugh , John D. Gjata , David Johnston , Robert Brose
发明人： Mike W. Lawless , Alex P. Soberon , Scott M. Defenbaugh , John D. Gjata , David Johnston , Robert Brose
IPC分类号： F04B4300
CPC分类号： A61M5/142 , A61M5/36 , A61M5/365 , A61M2205/128 , A61M2205/3355 , A61M2205/42 , F04B43/0054 , F04B43/02 , Y10T137/7843
摘要： A disposable cassette for use with a medical infusion pump. An elastomeric membrane is captured between a facing member and a base of the cassette and is displaced into a pumping chamber. The elastomeric membrane includes a generally T-shaped lip, and corresponding grooves are provided on the facing member and base. As the cassette is assembled, an interference fit between the lip and the grooves causes the membrane to stretch taut and to be securely anchored, eliminating a break-in period when the cassette is initially used. “Lobes” of increased thickness provided on the undersurface of a portion of the elastomeric membrane overlying the pumping chamber reduce the residual volume of the pumping chamber, thereby reducing the volume of air retained within the chamber and increasing the accuracy of the cassette. The lobes also sweep air bubbles from the sides of the pumping chamber during operation, further reducing air bubbles retained in the pumping chamber. A distal tube support retains a distal fluid line between air or pressure sensors included on a pump drive mechanism, thus reducing the likelihood of sensing errors. Inlet and outlet valve flaps and corresponding seating surfaces included in the base are configured to provide quieter operation, further reduce the residual volume of the pumping chamber, increase fluid velocity through the outlet valve to sweep air bubbles from the pumping chamber, and protect against a “blown” inlet valve.
摘要翻译：用于医用输液泵的一次性盒。弹性膜被捕获在面对构件和盒的基座之间并且被移动到泵送室中。弹性体膜包括大致T形的唇缘，并且在相对的构件和底座上设置相应的凹槽。当盒被组装时，唇缘和凹槽之间的过盈配合使得膜拉伸并牢固地锚定，消除了盒最初使用时的打入时间。提供在覆盖泵送室的弹性膜的一部分的下表面上的增加的厚度的“小叶”减小了泵送室的剩余体积，从而减小了保持在室内的空气的体积并提高了盒的精度。在操作期间，叶片还从泵送室的侧面吹扫气泡，进一步减少保持在泵送室中的气泡。远端管支撑件保持包括在泵驱动机构上的空气或压力传感器之间的远端流体管线，从而降低感测误差的可能性。入口和出口阀瓣和包括在基座中的相应的就座表面被配置为提供更安静的操作，进一步减小泵送室的剩余体积，增加通过出口阀的流体速度以从泵送室吹扫气泡，并防止 “吹”入口阀。

3. 发明授权

US06471436B1 Elastomeric connector coupling motor to cam actuator of infusion pump 失效
标题翻译：弹性连接器连接电机到输液泵的凸轮致动器
公开(公告)号：US06471436B1
公开(公告)日：2002-10-29
申请号：US09100621
申请日：1998-06-19
申请人： John D. Gjata , Michael W. Lawless , Andrew J. Scherer , Peter A. Soberon , Stephanie R. Squarcia
发明人： John D. Gjata , Michael W. Lawless , Andrew J. Scherer , Peter A. Soberon , Stephanie R. Squarcia
IPC分类号： F16D100
CPC分类号： F04B17/03 , A61M5/14224 , F16D3/74 , Y10T403/453 , Y10T403/458 , Y10T403/5733
摘要： A drive connector for elastomerically coupling a drive shaft to a driven shaft. An elastomeric coupling includes openings on opposite ends that are generally “D”-shaped forming an interference fit with correspondingly shaped ends of the drive shaft and the driven shaft. A web extends transversely within the interior of the elastomeric coupling, limiting the distance that the drive shaft and driven shaft are inserted within the openings of the coupling. The coupling includes a rib that runs longitudinally along its outer length. A sleeve having a groove corresponding in size and shape to the rib is slipped over the coupling and is connected to the driven shaft. The sleeve includes a rigid interior element that is overmolded with an elastomeric material. A cam bearing is fitted over a cam surface on the sleeve and provides a force in one direction, urging a plunger to displace an elastomeric membrane in a pumping cassette, forcing medicinal fluid to flow through the pumping cassette. The elastomeric membrane provides the restoring force to the plunger, so that a loop formed on the upper portion of the plunger and disposed around the cam bearing does not receive any force from the cam bearing to move the plunger away from the pump cassette. The elastomeric coupling and sleeve form a relatively compact assembly for coupling the drive shaft to the driven shaft and accommodate minor misalignment between the center lines of the drive shaft and the driven shaft.
摘要翻译：用于将驱动轴与从动轴弹性耦合的驱动连接器。弹性体联接器包括在相对端上的开口，其通常形成与驱动轴和从动轴的对应形状端部的过盈配合的“D”形状。腹板在弹性体联接件的内部横向延伸，限制了驱动轴和从动轴在联轴器的开口内插入的距离。联轴器包括沿其外部长度纵向延伸的肋。具有对应于肋的尺寸和形状的凹槽的套筒滑过联接器并连接到从动轴。套筒包括用弹性体材料包覆成型的刚性内部元件。凸轮轴承安装在套筒上的凸轮表面上并且在一个方向上提供力，推动柱塞移动泵送盒中的弹性体膜，迫使药液流过泵送盒。弹性膜向柱塞提供恢复力，使得形成在柱塞的上部并且围绕凸轮轴承设置的环不会受到来自凸轮轴承的任何作用力以将柱塞移离泵盒。弹性体联接器和套筒形成相对紧凑的组件，用于将驱动轴联接到从动轴并且容纳驱动轴和从动轴的中心线之间的微小错位。

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