公开(公告)号：WO1996003914A1

公开(公告)日：1996-02-15

申请号：PCT/US1995009725

申请日：1995-08-02

Applicant: VASOCOR, INC.

Inventor： VASOCOR, INC. ,  RAINES, Jeffrey, K. ,  SNYDER, Leon, T. ,  HOFFMAN, John

IPC: A61B05/02

CPC classification number: A61B5/02141 ,  A61B5/022 ,  A61B5/742 ,  A61B2560/0223

Abstract: The calibration device includes a controllable pneumatic pump (44), a pressure sensor (48), a computerized device (72) for determining when a representative number of blood volume change signals are substantially similar and thereafter generating a calibration signal. The calibration system also includes a device which changes the volume in the closed peumatic system by a predetermined calibrated amount in the presence of the calibration trigger signal. This volume changing device may be a series of valves (V1, V2) coupled by a chamber (50) having a known volumetric size or a positive displacement pump driven by a stepper motor. The calibration system also includes a computerized device for correcting representative blood volume change signals based on the pressure signals at each discrete level of cuff pressure as corrected by the calibration signals represented by detected pressure signals obtained substantially simultaneously with the change of the volume at each discrete level of cuff pressure.

Abstract translation: 校准装置包括可控气动泵（44），压力传感器（48），计算机化装置（72），用于确定代表数量的血容量变化信号何时基本相似，然后产生校准信号。 校准系统还包括一种在存在校准触发信号的情况下将闭合的皮肤系统中的体积改变预定校准量的装置。 该体积改变装置可以是由具有已知体积尺寸的室（50）和由步进电动机驱动的容积式泵耦合的一系列阀（V1，V2）。 该校准系统还包括一个计算机化装置，用于根据每个离散级别的袖带压力下的压力信号来校正代表性的血容量变化信号，所述压力信号由校准信号校正，所述校准信号由检测到的压力信号表示， 袖带压力水平。