Process for analyzing pressure variation in a perfusion apparatus comprising several units
First Claim
1. Method for analysis of the pressure variation in a perfusion device,said perfusion device comprising a plurality of perfusion modules i each equipped with a pump to deliver a liquid to be perfused in a line i placed downstream from the pump as well as with means for measuring the pressure in the line i, at least one junction point enabling connection of at least one of the lines i with (a) at least another of the lines i or (b) at least one line from at least one unit external to the perfusion device, wherein said method comprises:
- detecting, among lines i of modules i, a variation of pressure Pk in a line k of a module k, and determining, among modules i other than module k, an involvement of one or several modules j in this pressure variation, by an analytical process.
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Abstract
The invention concerns a method to analyze the pressure variation in a perfusion device including multiple perfusion modules each equipped with a pump to deliver a liquid to be perfused in a line placed downstream from the pump as well as a means to measure the pressure in the line, with junction points enabling connection of certain lines among each other or certain lines with lines from units outside the perfusion device. This process consists first in determining whether there is an acceptable explanation for a pressure variation (increase or reduction in the flow rate in a module) and whether this variation concerns modules other than that which detected it first, and which ones, to then act on the perfusion device according to the result of this analysis, either by modifying the analytical parameters in the various modules affected if the pressure variation has an acceptable explanation or by simultaneously stopping all the modules affected by this variation in flow rate and by dealing with the source of the malfunction (rupture or obstruction).
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Citations
28 Claims
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1. Method for analysis of the pressure variation in a perfusion device,
said perfusion device comprising a plurality of perfusion modules i each equipped with a pump to deliver a liquid to be perfused in a line i placed downstream from the pump as well as with means for measuring the pressure in the line i, at least one junction point enabling connection of at least one of the lines i with (a) at least another of the lines i or (b) at least one line from at least one unit external to the perfusion device, wherein said method comprises: -
detecting, among lines i of modules i, a variation of pressure Pk in a line k of a module k, and determining, among modules i other than module k, an involvement of one or several modules j in this pressure variation, by an analytical process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26)
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22. Method according to claim 20, wherein each pump j affected operates in reverse until a pressure determined on its line j has dropped below an established threshold Plj.
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23. Method according to claim 1, wherein a result of the analytical process is displayed in form of a connection diagram of the various lines.
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25. Method according to claim 1, comprising determining by the analytical process at least one of the following:
- (a) whether the pressure variation in line k of module k is explained in another module, (b) whether line k of module k is connected to other lines, (c) whether an obstruction has occurred and whether it affects one or a plurality of lines.
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26. Method according to claim 1, further comprising acting on the perfusion device by (a) modifying analytical parameters of modules j affected by the pressure variation in line k of module k, or (b) stopping all of the modules j.
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24. Perfusion device comprising:
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a plurality of perfusion modules i each equipped with a pump to deliver a liquid to be perfused in a line i placed downstream from the pump as well as means for measuring the pressure in the line i, at least one junction point enabling connection of at least one of the lines i with (a) at least another of the lines i or (b) at least one line from at least one unit external to the perfusion device, the modules i being capable of exchanging data among each other or with a base unit, and means for analyzing the pressure variation in the perfusion device by detecting, among lines i of modules i, a variation of pressure Pk in a line k of a module k, and determining, among modules i other than module k, an involvement of one or several modules j in this pressure variation, using an analytical process. - View Dependent Claims (27, 28)
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Specification