Title:
GAS-PERMEABLE MEMBRANE,METHOD OF MAKING IT AND BLOOD OXYGENATOR BASED ON THE USE THEREOF
Document Type and Number:
WIPO Patent Application WO/1981/000522
Kind Code:
A1
Abstract:
The gas-permeable membrane consists of a reinforcing substrate (2) and a continuous layer (1) of a polymer based on silicone rubber. The substrate (2) is made of a solid material with open porosity. The layer (1) is 2 to 5 microns thick and fills in partially the pores (3). The method of making the gas-permeable membrane consists in preparing a 1-20% solution of the polymer based on silicone rubber in a solvent which is inert with respect to the material of the solid porous substrate and is capable of wetting it. The substrate is then heated up to a temperature which is by 0,5-20 C higher than the boiling temperature of the solvent and the solution of the polymer is sprayed onto the surface of the substrate at a ratio of 0,5-5 mg/cm2. The blood oxygenator comprises a plurality of rigid gas-permeable membranes (13) assembled one above the other in a casing (17). The membranes (13) are connected in pairs along their periphery and around central openings thus forming gas flow chambers (15) covered with a layer of polymer on their internal surfaces. Blood flow chambers (14) are formed in the gaps between projections (19) on the external surfaces of the gas flow chambers (15). A central blood flow inlet collector (16) is formed along the central openings of the membranes (13).
Inventors:
GORUN V (SU)
SMIRNOV I (SU)
LIDORENKO N (SU)
LEV M (SU)
KARICHEV Z (SU)
SHCHEGOLEV I (SU)
MUCHNIK G (SU)
MOISEEV V (SU)
SHTEINBERG A (SU)
ILIN V (SU)
SMIRNOV I (SU)
LIDORENKO N (SU)
LEV M (SU)
KARICHEV Z (SU)
SHCHEGOLEV I (SU)
MUCHNIK G (SU)
MOISEEV V (SU)
SHTEINBERG A (SU)
ILIN V (SU)
Application Number:
PCT/SU1979/000070
Publication Date:
March 05, 1981
Filing Date:
August 21, 1979
Export Citation:
Assignee:
GORUN V
SMIRNOV I
LIDORENKO N
LEV M
KARICHEV Z
SHCHEGOLEV I
MUCHNIK G
MOISEEV V
SHTEINBERG A
ILIN V
SMIRNOV I
LIDORENKO N
LEV M
KARICHEV Z
SHCHEGOLEV I
MUCHNIK G
MOISEEV V
SHTEINBERG A
ILIN V
International Classes:
A61M1/00; A61M1/14; A61M1/22; A61M1/16; B01D53/22; B01D69/10; B01D71/70; (IPC1-7): B01D13/00; A61M1/03
Foreign References:
| SU657822A1 | 1979-04-25 | |||
| FR2409781A1 | 1979-06-22 | |||
| US3684097A | 1972-08-15 | |||
| US3325330A | 1967-06-13 | |||
| US3459310A | 1969-08-05 |
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