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首页> 外国专利> Gas-permeable membrane, and blood oxygenator based on gas- permeable membrane

Gas-permeable membrane, and blood oxygenator based on gas- permeable membrane

机译：透气膜和基于该透气膜的血液充氧器

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The gas-permeable membrane comprises a reinforcing substrate (2) and a continuous layer (1), deposited thereonto, of a polymer based on an organosilicon rubber. The substrate (2) is made of a solid open- pore material. The layer (1) has a thickness of from 2 to 5 &mgr;m and partly fills pores (3). The process for the manufacture of the gas- permeable membrane comprises preparation of a 1-20% solution of a polymer based on an organosilicon rubber in a solvent inert relative to the solid porous substrate material and capable of wetting it. The substrate is heated to a temperature by 0.5°-20° C. above the boiling point of the solvent and the polymer solution is sprayed onto the substrate surface in an amount of from 0.5 to 5 mg/cm.sup.2. The blood oxygenator comprises a plurality of rigid gas-permeable membranes (13) positioned one above another in a housing (17). The membranes (13) are connected in pairs along their periphery and along the circumference of the central openings with the formation of gas-flow chambers (15) with the polymer layer on their external surfaces. The blood-flow chambers (14) are formed in clearances between projections (19) on external surfaces of the gas- flow chambers (15). Inside the central openings of membranes (13) an inlet central blood-flow manifold (16) is formed.
机译：透气膜包括增强基底（2）和沉积在其上的基于有机硅橡胶的聚合物的连续层（1）。基底（2）由固体开孔材料制成。层（1）的厚度为2至5μm，并部分填充孔（3）。所述透气膜的制造方法包括在相对于所述固体多孔基质材料为惰性的溶剂中制备基于有机硅橡胶的聚合物的1-20％溶液。将基材加热到比溶剂的沸点高0.5°-20℃的温度，并将聚合物溶液以0.5至5mg / cm 2的量喷涂到基材表面上。血液充氧器包括多个刚性的透气膜（13），它们在壳体（17）中一个接一个地定位。膜（13）沿其周边和中心开口的周边成对连接，从而形成具有在其外表面上具有聚合物层的气流室（15）。血液流动室（14）形成在气体流动室（15）的外表面上的突起（19）之间的间隙中。在膜片（13）的中央开口内部，形成入口中央血流歧管（16）。

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