| 摘要 |
PURPOSE: To obtain a membrane having a flexibility and all the characteristics that allow changes in the capacity of a chamber by including at least the one layer of a fibrous material arranged between the two layers of a biocompatible elastomer. CONSTITUTION: The membrane 10 comprises the multilayer composite of including, in order from the outside 12 of a solution reservoir 14 to an inside 8, the layer 1 of a biocompatible silicon, the layer 2 of epoxy resin, a cloth 3 consisting of one or more than one layer of an woven kepler fiber 16, the second layer 4 of epoxy resin, the optional middle layer 5 of silicon, Mylar plastic film 6 and the third layer 7 of the biocompatible silicon. Preferably the layers 1, 5 may be an elastomer, if desired, the silicon can be substituted by a polyurethane and the like. The layer 1 guarantees the bicompatibility against a patient's body, on the other hand the layer 7 also guarantees the biocompatibility as to a substance included in the inside 8 of the solution reservoir 14 implanted. A resin layers 2, 4 are combined with the cloth 3 and the stability is guaranteed, and their separation are prevented by moving a filament 16. |
