公开(公告)号：US06560804B2

公开(公告)日：2003-05-13

申请号：US09199125

申请日：1998-11-24

申请人： William M. Wise ,  Cesar Z. Lina ,  X. Lu Zheng ,  Thomas A. Boynton

发明人： William M. Wise ,  Cesar Z. Lina ,  X. Lu Zheng ,  Thomas A. Boynton

IPC分类号： A47C2710

CPC分类号： A61G7/05769 ,  A61G2203/40 ,  Y10S5/905

摘要： The present invention relates to a system and a method for detecting and monitoring the distance between a patient and a reference point on an inflatable air mattress and for controlling the air supply to that mattress in relation to such distance. The patient distance sensing system includes a rigid support frame such as a bed frame, an inflatable air mattress positioned atop the bed frame with the upper surface of the inflatable air mattress forming a patient support surface, an air supply operable to provide controlled variations in air supply, and a series of patient distance sensing devices. Such devices including a heterodyning proximation detector, a force responsive distance sensing device, and a light responsive sensing device. Each device is operable to act separately or cooperatively in maintaining a therapeutically beneficial patient support surface through variable control of the delivery of inflation pressure to the air mattress. The heterodyning proximation detector is further operable to initiate inflation by way of a through space sensing of an approaching patient. The present invention further provides a preferred method for regulating the inflation of a therapeutic air mattress through operation of the described patient distance sensing system.

摘要翻译： 本发明涉及一种系统和方法，用于检测和监测患者与充气气垫之间的参考点之间的距离，并且用于控制与该距离相关的该床垫的空气供应。 患者距离感测系统包括诸如床架的刚性支撑框架，位于床架顶部的可充气空气床垫，其中可膨胀空气床垫的上表面形成患者支撑表面，空气供应器可操作以提供受控制的空气变化 供应和一系列病人距离感测装置。 这种装置包括外差近似检测器，力响应距离感测装置和光响应感测装置。 每个装置可操作地通过可变地控制对气垫的输送膨胀压力来单独地或协作地维持治疗有益的患者支撑表面。 外差近似检测器还可操作以通过对接近患者的通过空间感测来启动充气。 本发明还提供了一种通过操作所描述的患者距离感测系统来调节治疗性空气床垫的充气的优选方法。

公开(公告)号：US06447460B1

公开(公告)日：2002-09-10

申请号：US09286190

申请日：1999-04-05

申请人： X. Lu Zheng ,  Tianning Xu ,  David M. Tumey

发明人： X. Lu Zheng ,  Tianning Xu ,  David M. Tumey

IPC分类号： A61B500

CPC分类号： A61B5/015 ,  A61B5/6828 ,  A61B5/7264

摘要： An automated screening tool for the exclusion of deep venous thrombosis generally comprises a sensor array for gathering thermal data from the lower limbs of a patient suspected of DVT; a processor for automated analysis of the gathered data; and a display device for reporting the exclusion or non-exclusion of DVT. In the preferred embodiment of the present invention, a microprocessor based system is utilized to control the gathering of thermal data and, thereafter, the reporting of the gathered data to the processor. According to the preferred method for use of the present invention, the gathered thermal data is utilized, alone or in combination with other indicators, as a factor for exclusion of DVT based upon an implemented algorithm. According to the preferred embodiment of the present invention, a neural network or genetic algorithm is implemented within the processor in order to make an entirely objective determination relative the presence of DVT. This feature makes the present invention particularly adapted to multiple risk factor analysis, wherein factors such as calf circumference; positive Homan sign; colorimetry reading of the limbs; recent surgery or trauma; history of DVT, phlebitic syndrome or venous insufficiency; or presently uncannulated veins may be considered along with thermographic data.

摘要翻译： 用于排除深静脉血栓形成的自动化筛选工具通常包括用于从疑似DVT的患者的下肢收集热量数据的传感器阵列; 用于对收集的数据进行自动分析的处理器; 以及用于报告DVT的排除或不排除的显示装置。 在本发明的优选实施例中，利用基于微处理器的系统来控制热数据的收集，之后将所收集的数据报告给处理器。 根据本发明使用的优选方法，基于所实施的算法，聚集的热数据单独使用或与其他指示器组合用作排除DVT的因素。根据本发明的优选实施例， 在处理器内实现神经网络或遗传算法，以便相对于DVT的存在进行完全客观的确定。 该特征使得本发明特别适用于多重危险因素分析，其中诸如小腿周长等因素; 正面汉曼标志 四肢比色读数; 近期手术或创伤; DVT史，静脉综合征或静脉功能不全; 或目前的无静脉静脉可以与热成像数据一起考虑。