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    • 8. 发明授权
    • Fetal heart monitoring
    • 胎心监测
    • US08579820B2
    • 2013-11-12
    • US13120248
    • 2009-09-16
    • Roy Jackson
    • Roy Jackson
    • A61B8/02
    • A61B8/0866A61B8/02
    • A transmit amplifier (12) drives an ultrasound transducer (11) to emit a pulse, and a receive amplifier (13) amplifies the echo signal detected by the transducer. The receive amplifier's gate opens a fixed delay after the end of the transmit pulse, and a demodulator (14) multiplies the received signal by the local oscillator signal. A low-pass filter removes the sum of the frequencies and passes the difference of the frequencies (the received signal's Doppler frequency) to be digitized by an ADC. ADC readings are made for each of several range bins in intervals during the receive gate-open interval. One or two of the Doppler audio signals will contain the signal from the fetal heart. When a periodic signal is found, its rate is tested to see if it lies within or outside the typical range of a fetal heart.
    • 发射放大器(12)驱动超声换能器(11)发射脉冲,而接收放大器(13)放大由换能器检测到的回波信号。 接收放大器的门在发送脉冲结束后打开固定的延迟,解调器(14)将接收的信号乘以本地振荡器信号。 低通滤波器去除频率之和,并通过ADC进行数字化的频率差(接收信号的多普勒频率)。 在接收门打开间隔期间间隔内为数个范围单元中的每一个进行ADC读数。 一个或两个多普勒音频信号将包含来自胎儿心脏的信号。 当发现周期性信号时,测试其速率以查看其是否在胎心脏的典型范围之内或之外。
    • 9. 发明授权
    • Bed castor and brake assembly
    • 床脚轮和制动总成
    • US08528704B2
    • 2013-09-10
    • US11995976
    • 2006-07-17
    • Stephen HayesStephen Hollyoak
    • Stephen HayesStephen Hollyoak
    • B60B33/00
    • A61G7/015A61G7/0507A61G7/0514A61G7/0524Y10T16/554Y10T74/20888
    • A pedal (10) is formed from a single molding and includes first and second arms (12, 14), each provided with an over molded marker (16, 18). The pedal (10) has two fittings (20, 22) for coupling with a brake actuator rod (24) and a coupling member (26) respectively. A castor (40) includes a wheel (42) which can rotate about a bushing (44) and a coupling shaft (46). Within the shaft (46) there is provided a brake mechanism for locking the wheel (42). A base frame (80) for a bed includes longitudinal and transverse struts (52, 54) arranged in a rectangular form, with four castors (40) and four associated pedal assemblies (10). Two actuator rods (24) are provided, one for each pair of opposing pedal assemblies (10), while two connecting elements (26) are provided, one for each pair of side-by-side pedal assemblies (10). All the pedals and thus all the brake mechanisms are coupled to one another through the two actuator rods (24) and two coupling elements (26). When one pedal (10) is actuated all the castors will either be locked or will all be released by a single operation.
    • 踏板(10)由单个模制件形成并且包括第一和第二臂(12,14),每个臂设置有过模制的标记(16,18)。 踏板(10)具有分别用于与制动致动器杆(24)和联接构件(26)联接的两个接头(20,22)。 脚轮(40)包括可围绕衬套(44)和联接轴(46)旋转的轮(42)。 在轴(46)内设置有用于锁定车轮(42)的制动机构。 用于床的底架(80)包括以矩形形式布置的纵向和横向支柱(52,54),具有四个脚轮(40)和四个相关联的踏板组件(10)。 设置有两个致动器杆(24),每个对应的踏板组件(10)一个,而两个连接元件(26)设置,每对一对并排踏板组件(10)一个。 所有的踏板和所有的制动机构通过两个致动器杆(24)和两个联接元件(26)彼此联接。 当一个踏板(10)被启动时,所有的脚轮将被锁定或者将全部通过单个操作来释放。
    • 10. 发明授权
    • Automatic ankle brachial pressure index system
    • 自动踝臂压力指数系统
    • US08439843B2
    • 2013-05-14
    • US12280362
    • 2007-02-23
    • Nigel GoughJon Evans
    • Nigel GoughJon Evans
    • A61B8/00A61B8/04A61B8/06A61B5/00A61B5/0295
    • A61B5/022A61B5/02233A61B5/02241
    • An ABPI measurement system includes two cuffs for each ankle and two cuffs for each arm of a patient. Each cuff has chambers. The four cuffs are applied to each limb (or finger or toe), each chamber is inflated simultaneously to a pressure until a Pneumo Arterial Plethysmography (PAPG) signal related to the arterial flow in the limb is detected at the chambers. The chambers are then simultaneously inflated until the PAPG signals are extinguished in each limb, the inflation of chambers continuing for 10 mmHg to 20 mmHg above that pressure. The chambers are then deflated and the pressure at which the PAPG signal returns in the first chamber is recorded for each limb and this value of the pressure is used to calculate the ABPI. The ABPI is displayed or sent to a remote site.
    • ABPI测量系统包括每个踝关节的两个袖带和每个手臂的两个袖带。 每个袖口都有房间。 将四个袖带应用于每个肢体(或手指或脚趾),每个腔室同时充气至压力,直到在腔室处检测到与肢体中的动脉流相关的肺动脉血流描记术(PAPG)信号。 然后,腔室同时充气,直到PAPG信号在每个肢体中熄灭,腔室的膨胀持续高于该压力10mmHg至20mmHg。 然后将腔室放气并记录PAPG信号在第一腔室中返回的压力,并且该压力值用于计算ABPI。 ABPI显示或发送到远程站点。