Low cost pressure transducer particularly for medical applications
    1.
    发明授权
    Low cost pressure transducer particularly for medical applications 失效
    低成本压力传感器,特别适用于医疗应用

    公开(公告)号:US5522266A

    公开(公告)日:1996-06-04

    申请号:US160035

    申请日:1993-11-30

    IPC分类号: G01L9/00 G01L1/00

    CPC分类号: G01L9/0055

    摘要: A pressure transducer (10) for measuring fluid pressure in a fluid path comprising a strain gauge circuit (37) of thick film piezoresistors formed on an alumina diaphragm (36) in a Wheatstone bridge configuration. Each resistance leg of the bridge typically includes a thick film measuring piezoresistor (R1A) to which selected thick film patch-in piezoresistors (R1B, R1C, R1D, R1E) are selectively connected to create a measuring resistance network (PN1). The measuring resistance network is adjusted to a predetermined resistance value to balance and optimize the electrical symmetry of the bridge. The pressure transducer (10) includes a mechanical stop member (46) located adjacent the alumina diaphragm (36) such that the fully deflected diaphragm contacts the stop thereby physically preventing the diaphragm from deflecting an amount that would cause the diaphragm to rupture.

    摘要翻译: 一种用于测量流体路径中的流体压力的压力传感器(10),包括形成在惠斯登电桥结构的氧化铝隔膜(36)上的厚膜压阻器的应变计电路(37)。 桥的每个电阻腿通常包括厚度测量压电电阻(R1A)的厚膜,选择性地连接选择的厚膜贴片式压阻电阻器(R1B,R1C,R1D,R1E)以产生测量电阻网络(PN1)。 将测量电阻网络调整到预定的电阻值,以平衡和优化电桥的电对称性。 压力传感器(10)包括位于氧化铝隔膜(36)附近的机械止动构件(46),使得完全偏转的隔膜接触止动件,从而物理地防止隔膜偏转导致隔膜破裂的量。

    Needleless connector sample site
    2.
    再颁专利
    Needleless connector sample site 失效
    无针连接器样品现场

    公开(公告)号:USRE35841E

    公开(公告)日:1998-07-07

    申请号:US321409

    申请日:1994-10-11

    IPC分类号: A61M39/02 A61M39/10 A61M5/00

    摘要: A sample site having a needleless connector access port including a flush mounted valve assembly which is readily accessible for wiping clean with a disinfectant. A male Luer connector may be operatively connected into the access port by a split Luer arrangement of female Luer connector portions adjacent the access port aperture. The split Luer arrangement does not generally obstruct wiping access to the access port and may include moveable connector portions to provide completely unobstructed wiping access thereto.

    摘要翻译: 具有无针连接器进入口的样品位置,其包括易于使用消毒剂擦拭清洁的齐平安装的阀组件。 公Luer连接器可以通过与接入端口孔相邻的阴式Luer连接器部分的分离Luer布置可操作地连接到进入端口中。 分离的鲁尔装置通常不会阻碍擦拭进入通道的通道,并且可以包括可移动的连接器部分,以完全无障碍地擦拭通道。

    Needleless connector sample site
    3.
    发明授权
    Needleless connector sample site 失效
    无针连接器样品现场

    公开(公告)号:US5203775A

    公开(公告)日:1993-04-20

    申请号:US855147

    申请日:1992-03-20

    IPC分类号: A61M39/02 A61M39/10

    摘要: A sample site having a needleless connector access port including a flush mounted valve assembly which is readily accessible for wiping clean with a disinfectant. A male Luer connector may be operatively connected into the access port by a split Luer arrangement of female Luer connector portions adjacent the access port aperture. The split Luer arrangement does not generally obstruct wiping access to the access port and may include moveable connector portions to provide completely unobstructed wiping access thereto.

    摘要翻译: 具有无针连接器进入口的样品位置,其包括易于使用消毒剂擦拭清洁的齐平安装的阀组件。 公Luer连接器可以通过与接入端口孔相邻的阴式Luer连接器部分的分离Luer布置可操作地连接到进入端口中。 分离的鲁尔装置通常不会阻碍擦拭进入通道的通道,并且可以包括可移动的连接器部分,以完全无障碍地擦拭通道。

    Tubular pressure transducer
    4.
    发明授权
    Tubular pressure transducer 失效
    管状压力传感器

    公开(公告)号:US4924872A

    公开(公告)日:1990-05-15

    申请号:US341822

    申请日:1989-04-24

    申请人: Thomas P. Frank

    发明人: Thomas P. Frank

    IPC分类号: A61B5/0215

    摘要: In a blood pressure monitoring system, a transducer which is a conductive rubber tube having conductive terminals at each end,and circumferentially spaced conductors connected to said semi-conductive band,whereby fluid under varying pressure will cause said insulative tube to expand and contract, thereby causing said semi-conductive band to expand and contract, thereby varying the resistance of the semi-conductive band.

    摘要翻译: 在血压监测系统中,作为导电橡胶管的传感器,每个端部具有导电端子,并且与所述半导电带连接的周向隔开的导体,由此在变化的压力下的流体将导致所述绝缘管膨胀和收缩,由此 导致所述半导电带膨胀和收缩,从而改变半导电带的电阻。

    Transducer with conductive polymer bridge
    5.
    发明授权
    Transducer with conductive polymer bridge 失效
    带导电聚合物桥的传感器

    公开(公告)号:US4974596A

    公开(公告)日:1990-12-04

    申请号:US386211

    申请日:1989-07-28

    申请人: Thomas P. Frank

    发明人: Thomas P. Frank

    摘要: A transducer has a thick perimeter and an integral diaphragm extending across said perimeter, all formed of a thermoplastic resin. A thick mass is molded at the center of the diaphragm. Resistive elements formed of a conductive polymer are printed and baked on the diaphragm to form a Wheatstone bridge. The transducer is used as an accelerometer or load cell.

    摘要翻译: 传感器具有厚的周长和横跨所述周边的整体隔膜,全部由热塑性树脂形成。 在隔膜的中心处模制厚质量。 由导电聚合物形成的电阻元件在隔膜上印刷并烘烤以形成惠斯通电桥。 传感器用作加速度计或称重传感器。

    Calibration system for blood pressure transducer
    6.
    发明授权
    Calibration system for blood pressure transducer 失效
    血压传感器校准系统

    公开(公告)号:US4760730A

    公开(公告)日:1988-08-02

    申请号:US72909

    申请日:1987-07-14

    CPC分类号: A61B5/02156 G01L27/005

    摘要: A system for calibrating a blood pressure transducer and monitor combination. The transducer assembly has a calibration resistor. The monitor cable has a housing which contains a switch and a shunt resistor. Electrical connections are provided to place the calibration resistor and shunt resistor in series with each other and in shunt across one leg of a transducer bridge to produce a reading of 100 mmHg on the monitor.

    摘要翻译: 用于校准血压传感器和监视器组合的系统。 传感器组件具有校准电阻。 显示器电缆具有包含开关和分流电阻的外壳。 提供电气连接以将校准电阻器和分流电阻器彼此串联并且跨越传感器桥的一个支路分流,以在监视器上产生100mmHg的读数。

    Gel-filled blood pressure transducer
    7.
    发明授权
    Gel-filled blood pressure transducer 失效
    凝胶填充血压传感器

    公开(公告)号:US4920972A

    公开(公告)日:1990-05-01

    申请号:US283224

    申请日:1988-12-12

    IPC分类号: A61B5/0215 A61B5/02 G01L9/00

    摘要: A reusable pressure transducer for use with a detachable dome. The pressure transducer includes a body having a recess with an opening covered by a flexible diaphragm. The body has a hole opposite the flexible diaphragm and a sensor placed over the hole. A dielectric gel fills the recess to transmit to the sensor variations in pressure imparted to the diaphragm.

    摘要翻译: 可拆卸式圆顶使用的可重复使用的压力传感器。 压力传感器包括具有凹口的主体,该凹部具有被柔性隔膜覆盖的开口。 主体具有与柔性隔膜相对的孔和位于孔上方的传感器。 介电凝胶填充凹部以传递传感器施加到隔膜的压力变化。

    Color Stabilized Composite Material
    9.
    发明申请
    Color Stabilized Composite Material 审中-公开
    颜色稳定复合材料

    公开(公告)号:US20080145637A1

    公开(公告)日:2008-06-19

    申请号:US11666467

    申请日:2005-10-26

    申请人: Thomas P. Frank

    发明人: Thomas P. Frank

    IPC分类号: B32B21/00 C08L97/02 C08K9/00

    摘要: A color stabilized composite material combines polymers with cellulosic natural fibers or wood or wood based composite materials to manufacture an array of products for both indoor and outdoor applications. The invention provides the means to enhance the color stability of such products from the negative effects of ultraviolet radiation and weather in addition to improving the physical properties of the overall fiber-polymer matrix. In one aspect, the invention provides a composite material including a natural fiber, such as wood flour, and a polymer resin, wherein the natural fiber has been pretreated with a bleaching or oxidizing agent. In another aspect, the invention provides a color stabilized composite building material including an elongated substrate, and a thermoplastic material coating disposed on a longitudinal circumference of the substrate, which may be wood or a wood-based composite material such as plywood, cellulosic fiberboard, particle board, waferboard, flakeboard, chipboard, or oriented strand board.

    摘要翻译: 颜色稳定的复合材料将聚合物与纤维素天然纤维或木材或木基复合材料结合,以制造用于室内和室外应用的产品阵列。 本发明提供了除了改善整个纤维 - 聚合物基体的物理性能之外,还可以增强这些产品从紫外线和天气的负面影响的颜色稳定性的方法。 一方面,本发明提供了包括天然纤维如木粉和聚合物树脂的复合材料,其中天然纤维已用漂白或氧化剂预处理。 另一方面,本发明提供了一种颜色稳定的复合建筑材料,其包括细长基材和设置在基材的纵向圆周上的热塑性材料涂层,其可以是木材或木基复合材料,例如胶合板,纤维素纤维板, 刨花板,刨花板,刨花板,刨花板或定向刨花板。