Blood filter and method for filtering blood

Abstract

The present invention relates to a method for filtering blood to produce plasma or serum, the method comprising the steps of: a. providing a blood filter comprising a filter membrane having opposing first and second sides (6) and a receiving chamber (2) defining a hollow space; and b. injecting a blood sample (1) into said receiving chamber (2), wherein said hollow space has a larger volume than said blood sample (1) The volume is 3 to 20 times larger, thereby increasing the gas pressure in the receiving chamber, so that the blood sample is filtered by the filter membrane (6), and the plasma or serum contained in the blood sample is forced to through the filter. The invention also relates to a method for filtering blood to produce plasma or serum, said method comprising the steps of: a. providing a blood filter comprising a filter having opposite first and second sides; Membrane (6) and a receiving chamber (2'') with a first volume; b. inject blood sample (1) and gas (2') into the syringe, said blood sample (1) occupying the second volume of said syringe volume and the gas (2') occupies a third volume in the syringe; c. connect the syringe to the blood filter so that they are in fluid communication with each other; and d. increase the pressure in the syringe until The blood sample (1) is received by the receiving chamber (2), so that the blood sample (1) is filtered by the filter membrane (6); wherein, the plasma contained in the blood sample or The serum is forced to pass through the filter membrane (6); the sum of the first volume and the third volume is 3 to 20 times larger than the second volume. The present invention also relates to a filter membrane (6), the The filter membrane has opposite first and second sides; the receiving chamber (2) defines a hollow space for receiving the blood sample to be filtered, the receiving chamber has at least one opening, the at least one opening is covered by the Covered by the filter membrane (6), wherein the first side faces the receiving chamber (2), and the volume of the hollow space of the receiving chamber is 3 to 20 times larger than the volume of the blood sample to be filtered; The sampling chamber (10) is arranged on the second side of the filter membrane (6).

Description

technical field [0001] The present invention relates to a method for filtering blood to produce plasma or serum and to a blood filter for producing plasma or serum from a blood sample. The invention also relates to a kit comprising a syringe and a blood filter for producing plasma or serum from a blood sample. Background technique [0002] In this specification, reference is made to various documents including patent applications and manufacturer's manuals. The contents of these documents, although not considered relevant to the patentability of this invention, are hereby incorporated by reference in their entireties. More specifically, all cited documents are incorporated by reference to the same extent as if each individual document was specifically and individually indicated to be incorporated by reference. [0003] Filtration of blood to separate solid blood components from serum or plasma is an essential step that can be used to determine the presence and / or concentra...

AI Technical Summary

Problems solved by technology

However, no device has been developed that can be used to rapidly produce serum or plasma without the need for a centrifugation step

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