公开(公告)号：US20090247926A1

公开(公告)日：2009-10-01

申请号：US12443000

申请日：2007-09-25

Applicant: Pascal Kopperschmidt

Inventor： Pascal Kopperschmidt

IPC: G01M3/04 ,  A61M1/14

CPC classification number: A61M1/3626 ,  A61M1/3639 ,  A61M5/365

Abstract: The present invention relates to a method and to a device for detecting the entry of air in a fluid system, in particular in an extracorporeal blood circuit of a blood treatment device comprising an arterial branch leading to the blood treatment unit and a venous branch leading from said blood treatment unit. Periodic fluctuations in the fluid system, in particular in the arterial tube, are measured upstream of the blood pump arranged in said arterial tube. The measured periodic pressure signal is analyzed spectrally in a system of functions, in particular a system of orthogonal functions, for example sine and cosine functions and the entry of air is deduced if at least one of the coefficients of the functions exceeds or falls below predefined threshold values.

Abstract translation: 本发明涉及一种用于检测流体系统中特别是在血液处理装置的体外血液循环中进入空气的方法和装置，该血液处理装置包括通向血液处理单元的动脉分支和从 说血液处理单位。 流体系统中特别是在动脉管中的周期性波动在布置在所述动脉管中的血液泵的上游被测量。 测量的周期性压力信号在功能系统，特别是正交函数系统（例如正弦和余弦函数）中进行频谱分析，并且如果功能的系数中的至少一个超过或低于预定义的范围，则推断空气的输入 阈值。

公开(公告)号：US20060254982A1

公开(公告)日：2006-11-16

申请号：US11128088

申请日：2005-05-11

Applicant: Pascal Kopperschmidt

Inventor： Pascal Kopperschmidt

IPC: B01D61/32

CPC classification number: A61M1/342 ,  A61B5/02141 ,  A61B5/7225 ,  A61B5/7257 ,  A61M1/1601 ,  A61M1/3431 ,  A61M1/3434 ,  A61M1/3437 ,  A61M1/3465 ,  A61M1/361 ,  A61M1/3612 ,  A61M1/3639 ,  A61M1/3653 ,  A61M1/3655 ,  A61M1/3658 ,  A61M2205/3355 ,  A61M2205/702 ,  A61M2230/30

Abstract: The invention relates to a process for monitoring the supply of substitution fluid upstream or downstream of a dialyser or filter arranged in an extracorporeal blood stream. One embodiment provides, for the detection of predilution or postdilution, for measuring the pressure in the blood stream downstream of the dialyser or filter, predilution or postdilution being recognized on the basis of the change in pressure following the shutting off and/or starting up of the substituate pump provided for conveying the substitution fluid. Another embodiment provides for recognizing predilution or postdilution on the basis of the comparison of the oscillating pressure signal attributable to the substituate pump to a characteristic reference signal. The characteristic reference signal to which the pressure signal of the substituate pump is compared is preferably the oscillating pressure signal of a blood pump arranged in the blood stream for conveying the blood upstream of the dialyser or filter. In addition, the invention relates to an extracorporeal blood treatment device with a facility for detecting predilution or postdilution, which device operates according to the processes detailed above.

Abstract translation: 本发明涉及一种用于监测布置在体外血流中的透析器或过滤器上游或下游的置换液的供给的方法。 一个实施方案提供了用于检测预稀释或后稀释用于测量透析器或过滤器下游的血流中的压力，根据在关闭和/或启动后的压力变化来识别预稀释或后稀释 提供用于输送替代流体的替代泵。 另一个实施例提供了基于归因于替代泵的振荡压力信号与特征参考信号的比较来识别预稀释或后稀释。 比较替代泵的压力信号的特征参考信号优选是布置在用于输送透析器或过滤器上游的血液的血液中的血液泵的振荡压力信号。 此外，本发明涉及具有检测预稀释或后稀释的设备的体外血液处理装置，该装置根据上述方法进行操作。