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Device for filtering a complex liquid such as blood, particularly applicable to an autotransfuser

A filter device and complex technology, applied in gravity filters, fixed filter element filters, filter separation, etc., can solve problems that are not easy to achieve and speed up clogging

Inactive Publication Date: 2011-06-01
领先公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the accumulation of these components on the filter surface tends to be caused by gravity, which accelerates the clogging phenomenon, which is worse in the presence of negative pressure
One solution is to agitate the composition to be filtered, but this is not easy to achieve if a simple system is sought

Method used

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  • Device for filtering a complex liquid such as blood, particularly applicable to an autotransfuser
  • Device for filtering a complex liquid such as blood, particularly applicable to an autotransfuser
  • Device for filtering a complex liquid such as blood, particularly applicable to an autotransfuser

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Experimental program
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Embodiment Construction

[0016] figure 1 There is shown a filtering device 10 for complex liquids, said device comprising a base 12 and a top 14 adapted to fit into said base.

[0017] The different elements are preferably made of plastics suitable for precision molding and, depending on the intended application, medical and / or food compatible. In the case of current applications for blood filtration, in particular for autologous blood transfusions, the plastic has all the properties that comply with the relevant standards.

[0018] The base 12 and top 14 are suitably precision molded, as will be explained hereinafter, such that when the two parts are fully nested, a smooth friction nest ensures a tight seal.

[0019] Between the base 12 and the top 14, a filter membrane 16 is placed. This membrane 16 has a cut-off threshold (un seuil de coupure) suitable for the product to be filtered, as stated earlier in the description.

[0020] Base 12 is cylindrical with a bottom 18 and an annular wall 20 . ...

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Abstract

The present invention relates to a device for the filtration of a complex fluid composition such as blood, characterised in that the device includes a base (12) with a bottom (18), a head (14) with a bottom (30), and a membrane (16) provided between said base and said head in order to define a lower chamber (C1) and an upper chamber (C2), an inlet tapping (26) for the complex composition to be filtered opening into said lower chamber (C1), an outlet tapping (28) for the retentate with flow adjustment means and opening into said lower chamber (C1), and an outlet tapping (36, 36-1) from the upper chamber (C2), wherein said outlet tapping (36, 36-1) for the permeate is subjected to a negative pressure.

Description

technical field [0001] The present invention relates to a filtering device for complex liquids such as blood, especially suitable for being integrated into blood processing equipment for autologous blood transfusion. Background technique [0002] It is known that the filtration of blood in order to remove impurities or substances, especially in the case of autologous blood transfusions, presents a number of problems, in particular clogging of the filter surfaces. The porosity of the filtering surface changes with the filtering conditions, so that the filtering capacity decreases until it is zero. [0003] As described below, the example considered is blood, which is a heterogeneous medium, and the filter device according to the invention is suitable for any liquid composition having the same problem. [0004] As in blood, more or less proteins of different molecular weights can be found, as well as various cellular components. If a filtration threshold (un seuil de filtrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/34
CPCB01D61/20B01D2313/086B01D61/18A61M2001/3417A61M2202/0035B01D29/01A61M2202/0042B01D63/087A61M1/3417A61M5/165A61M2205/7563A61M2005/1657A61M1/3633B01D29/41A61M2206/12B01D65/08B01D23/08A61P7/00
Inventor 弗郎西斯·加德拉贝特朗·沙特内
Owner 领先公司