Multi-layer filter
First Claim
1. A multilayer filter combination, comprisinga macrofilter layer having a predetermined thickness and two major sides, said macrofilter layer including porous material impregnated with bacteria-destroying medication and having pore sizes in the range from about 1 micron to about 120 microns, anda microfilter layer having a prearranged thickness smaller than said predetermined thickness, and including a porous membrane having pore sizes from about 0.1 micron to about 10 microns, said microfilter layer being mechanically bonded to at least a major side of said macrofilter layer, whereby transfer of any remaining live bacteria which may have survived exposure to said bacteria-destroying medication, and which may attempt to pass outwardly beyond said microfilter layer is inhibited.
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Abstract
A multi-layer filter combination having a macrofilter layer with a predetermined thickness and two major sides including porous material impregnable with bacteria-destroying medication and having pore sizes in the range from about 1 micron to about 120 microns. There is also a microfilter layer having a prearranged thickness smaller than the thickness of the macrofilter and including a porous membrane having pore sizes from about 0.1 micron to about 10 microns. The microfilter layer is mechanically bonded to at least a major side of the macrofilter layer, whereby inhibiting transfer of any remaining live bacteria which may have survived exposure to the bacteria-destroying medication, and which may attempt to pass outwardly beyond the microfilter layer. The medication is either an antibiotic and an iodophore.
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Citations
18 Claims
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1. A multilayer filter combination, comprising
a macrofilter layer having a predetermined thickness and two major sides, said macrofilter layer including porous material impregnated with bacteria-destroying medication and having pore sizes in the range from about 1 micron to about 120 microns, and a microfilter layer having a prearranged thickness smaller than said predetermined thickness, and including a porous membrane having pore sizes from about 0.1 micron to about 10 microns, said microfilter layer being mechanically bonded to at least a major side of said macrofilter layer, whereby transfer of any remaining live bacteria which may have survived exposure to said bacteria-destroying medication, and which may attempt to pass outwardly beyond said microfilter layer is inhibited.
Specification