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1. 发明授权

US5772637A Intravenous-line flow-control system 失效
标题翻译：静脉血流控制系统
公开(公告)号：US5772637A
公开(公告)日：1998-06-30
申请号：US472212
申请日：1995-06-07
申请人： R. Kurt Heinzmann , Richard Lanigan , Peter Lund , Dean L. Kamen , William T. Larkins , Robert Manning
发明人： R. Kurt Heinzmann , Richard Lanigan , Peter Lund , Dean L. Kamen , William T. Larkins , Robert Manning
IPC分类号： A61M5/14 , A61M5/142 , A61M5/168 , A61M5/36 , A61M39/28 , A61M5/00
CPC分类号： A61M5/1413 , A61M39/281 , A61M5/14224 , A61M2205/128 , A61M2205/14 , A61M2205/35 , A61M2205/8206 , A61M2205/8262 , A61M5/16809 , A61M5/16831 , A61M5/365 , Y10S128/12
摘要： An intravenous-line flow-control system for receiving a disposable cassette disposed in the intravenous line. The system prevents the free flow of intravenous fluid through the cassette when the cassette is removed from the system. The system includes a control unit having a door or similar structure for holding the cassette against a receiving surface. The control unit includes a stepper motor and a transmission member for turning a rotatable control valve on the cassette in order to restrict variably the flow of fluid through the cassette. When the door is being opened but while the cassette is still held against the receiving surface, a motor-disengagement mechanism moves at least the transmission member, and preferably the stepper motor as well, from a first position, from which the control valve may be engaged by the transmission member, to a second position, in which the transmission member is disengaged from the control valve. Preferably, the motor-disengagement mechanism includes a button on the handle of a door-opening mechanism, and by pushing the button the transmission member and the stepper motor are moved to the second position. In addition, when the door is being opened but while the cassette is still held against the receiving surface, a shut-off mechanism engages the cassette's control valve and turns the control valve to its closed position. The control unit may use alternative power supplies and include links for communicating with other control units.
摘要翻译：一种用于接收设置在静脉内管线中的一次性盒的静脉内线路流量控制系统。当盒子从系统中取出时，该系统防止静脉注射液自由流过盒子。该系统包括具有门或类似结构的控制单元，用于将盒子保持在接收表面上。控制单元包括步进电动机和用于转动盒上的可旋转控制阀的传动构件，以便可变地限制通过盒的流体的流动。当门被打开时，但是当盒子仍然保持在接收表面上时，电动机脱离机构至少将传动构件（优选地步进电动机）从第一位置移动，控制阀可以从该第一位置移动由传动构件接合到传动构件与控制阀分离的第二位置。优选地，电动机脱离机构包括门打开机构的把手上的按钮，并且通过按压按钮，传动构件和步进电动机被移动到第二位置。此外，当门打开时，但是当盒子仍然靠在接收表面上时，切断机构接合盒的控制阀并将控制阀转动到其关闭位置。控制单元可以使用替代电源，并且包括用于与其他控制单元通信的链接。

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