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    • 42. 发明授权
    • Method of eliminating bubbles in a medical centrifugal pump using speed
variations
    • 使用速度变化消除医用离心泵中气泡的方法
    • US5676526A
    • 1997-10-14
    • US392966
    • 1995-06-01
    • Katsuyuki KuwanaShuichi IshiiTakeshi AizawaKazuyuki ItoMotonori Matsuura
    • Katsuyuki KuwanaShuichi IshiiTakeshi AizawaKazuyuki ItoMotonori Matsuura
    • A61M1/10A61M1/14A61M1/36F04B17/03F04B15/00
    • A61M1/101A61M1/3629
    • The present invention relates to a bubble elimination method in a medical centrifugal pump wherein a blood outlet 18 is directed upward so that a vertical line X passing through the enter point O of centrifugal pump main body 12 is positioned between two straight lines .alpha.,.beta. which respectively pass through center point O and a point A and center point O and a point B, points A and B lying on the circumference of centrifugal chamber 15 where its periphery connects with blood outlet 18, and a blood inlet 17 is directed upward at an angle which is larger than the angle which is formed between the axis and the inner peripheral surface of centrifuge chamber 15, blood outlet 18 and blood inlet 17 being supported in these states by a drive portion 13 of the centrifugal pump main body 12. After filling the centrifuge chamber with blood and liquid filling, the processes of low speed drive, drive halt and high speed drive are sequentially carried out to rotating body 23. By means of this invention, it is possible to eliminate with surety the lingering of air bubbles inside centrifuge chamber 15 of centrifugal pump main body 12 when initiating circulation of the blood in the circulation path of an artificial heart-lung machine or the like.
    • PCT No.PCT / JP94 / 01298 Sec。 371日期:1995年6月1日 102(e)1995年6月1日PCT PCT 1994年8月5日PCT公布。 公开号WO95 / 04558 日期:1995年02月16日本发明涉及一种医用离心泵中的气泡消除方法,其中血液出口18向上引导,使得穿过离心泵主体12的入口点O的垂直线X位于两条直线 分别通过中心点O和点A以及中心点O和点B的点a,b,位于其外围与血液出口18连接的离心室15的圆周上的点A和B,血液入口17 以比在离心机室15的轴线和内周面,血液出口18和血液入口17之间形成的角度大的角度以这些状态由离心泵主体的驱动部分13支撑 在将血液和液体填充物填充到离心机室之后,依次对转动体23进行低速驱动,驱动停止和高速驱动的处理。 通过本发明,可以确保在人造心肺机等的循环路径中启动血液循环时消除离心泵主体12的离心机室15内气泡的滞留。
    • 45. 发明授权
    • Digital broadcasting receiving unit and digital broadcasting system
    • 数字广播接收单元和数字广播系统
    • US08385403B2
    • 2013-02-26
    • US11785406
    • 2007-04-17
    • Hiroshi ShirotaTadashi SaitoKazuyuki ItoRyosuke OkudaMasao Aramoto
    • Hiroshi ShirotaTadashi SaitoKazuyuki ItoRyosuke OkudaMasao Aramoto
    • H04N7/12
    • H04N21/4305
    • This invention provides a digital broadcasting receiving unit capable of achieving synchronization of time information between a base station and a receiving unit with reference clock without use of a crystal oscillator (VCXO) having a variable frequency. The crystal oscillator oscillates a clock of a predetermined fixed frequency. A variable digital dividing circuit divides a fixed frequency by a division ratio so as to change the division ratio. A system decoder detects reference time information from the base station. A reference counter generates time information of a receiving unit. A phase comparator detects a difference between reference time information and time information. A division ratio control circuit controls the change of the division ratio based on the difference. The reference counter generates time information based on a clock having a frequency obtained by dividing by the variable digital dividing circuit and feeds back time information to the phase comparator.
    • 本发明提供一种数字广播接收单元,其能够在不使用具有可变频率的晶体振荡器(VCXO)的基准时钟的情况下实现基站与接收单元之间的时间信息的同步。 晶体振荡器振荡预定固定频率的时钟。 可变数字分频电路将固定频率除以分频比以改变分频比。 系统解码器从基站检测参考时间信息。 参考计数器产生接收单元的时间信息。 相位比较器检测参考时间信息和时间信息之间的差异。 分频比控制电路基于该差异来控制分频比的变化。 参考计数器基于具有通过可变数字分频电路除以获得的频率的时钟产生时间信息,并将时间信息反馈到相位比较器。