摘要:
The invention provides a method for sterilizing a blood purifier, as well as a blood purifier package. The method is effective to decrease the amounts of extracts from the blood purifier attributed to the deterioration of the selectively permeable separation membranes with time during and after exposure to a radioactive ray or an electron ray, and is highly reliable in safety when employed for hemocatharsis therapy. The method for sterilizing a blood purifier which comprises substantially dried selectively permeable separation membranes as a main component, by way of the exposure of the same blood purifier to a radioactive ray and/or an electron ray, is characterized in that the blood purifier is sealed in a packaging bag, together with an oxygen scavenger and a humectant or together with an oxygen scavenger capable of releasing a moisture, and is then sterilized in such a sealed state by the above exposure.
摘要:
The present invention provides a blood purifier which shows a decreased amount of hydrogen peroxide extracted from its selectively permeable separation membranes, and thus is highly reliable in its safety in use for hemecatharysis.The present invention relates to a blood purifier which comprises selectively permeable separation membranes as a main component and which is characterized in that the amount of hydrogen peroxide which is extracted from the selectively permeable separation membrane removed from the blood purifier after 3 months or longer has passed since the sterilization of the blood purifier by exposure to a radioactive ray and/or an electron ray is not larger than 10 ppm.
摘要:
The present invention provides a method for sterilizing a blood purifier, which method is effective to decrease the amounts of extracts from the blood purifier attributed to the deterioration of the selectively permeable separation membranes with time during and after exposure to a radioactive ray or an electron ray, and which method is highly reliable in safety when employed for hemocatharsis therapy. The present invention also provides a blood purifier package.The present invention relates to a method for sterilizing a blood purifier which comprises substantially dried selectively permeable separation membranes as a main component, by way of the exposure of the same blood purifier to a radioactive ray and/or an electron ray, and this method is characterized in that the blood purifier is sealed in a packaging bag, together with an oxygen scavenger and a humectant or together with an oxygen scavenger capable of releasing a moisture, and is then sterilized in such a sealed state by the above exposure.
摘要:
The invention relates to the use of a neutral or cationic polymer for preventing activation of the contact phase of blood or plasma which comes into contact with a semi-permeable membrane based on polyacrylonitrile bearing fixed negative charges, which is fitted in apparatus for the treatment of blood or plasma by extra-corporal circulation, by combination of the neutral or cationic polymer, before or after formation of the membrane and before its sterilization, so as to modify the electrical properties of the membrane, the Zeta potential “Z” and the electrical resistivity “R” in order to obtain: either an electrokinetic index “I” of less than or equal to 0.8, “I” corresponding to Log10 (|Z|/R), or a positive Zeta potential “Z” of between 0 and 15 mV (limits not included).
摘要翻译:本发明涉及中性或阳离子聚合物用于防止与基于聚丙烯腈的半透膜接触的血液或血浆的接触相活化的固定负电荷的用途,所述聚乙烯腈装在用于治疗 通过体外循环的血液或血浆,通过中性或阳离子聚合物的组合,在膜的形成之前和之后并在其灭菌之前,以改变膜的电性能,Zeta电位“Z”和电 电阻率“R”,以获得小于或等于0.8的电动指数“I”,对应于Log10(| Z | / R)的“I”或0和15之间的正Zeta电位“Z” mV(不包括限制)。
摘要:
Method of treating a cellulosic hollow fiber which is being particularly adapted for use in hemodialysis or a similar extracorporeal treatment of blood.According to the described method the hollow fiber, possibly after rinsing with an alcoholic solution or fluorinated hydrocarbons, is exposed to swelling with use of an aqueous solution prior to drying and/sterilization of the hollow fiber.Examples of aqueous solutions can be water, water/glycerol, and water/glycerol/alcohol. Preferably said aqueous solution contains glycerol in an amount of 4-35%, such as 12-35%, preferably 16-35%.The aqueous solution can be applied to the inside and/or the outside of the hollow fiber so as to bring about a diffusive and/or a convective transport of water and/or glycerol into the hollow fiber wall. The rate of diffusion can be increased by increasing the temperature of the aqueous solution, by increasing the contact time between the aqueous solution and the hollow fiber, or by increasing the glycerol content of the aqueous solution, and the convective transport of said substances is achieved by applying the aqueous solution under pressure.After drying, the hollow fiber can be sterilized either by temperature or by radiation without any substantial loss of permeability characteristics.
摘要:
A combination of a single-station reverse-osmosis (RO) device comprising a hemodialysis device (HD device) is characterized in that a connection line is provided with a buffer chamber for permeate which serves on the one hand a faster permeate supply into the HD device and on the other hand a generation of a negative transmembrane pressure, and that upon request by the HD device the permeate flows either via the water inlet valve into the HD device or via a flushing valve of the HD device to an outlet.
摘要:
Methods and systems for preventing biofouling of membranes utilized in water treatment processes (i.e., water treatment membranes) are described. Methods include X-ray excitation of luminescent materials capable of emitting in the violet to UV range (e.g., from about 180 nm to about 440 nm). X-rays are directed at water treatment modules to contact the luminescent materials within the modules and excite internal violet/UV to prevent biofouling of membranes. The methods can be utilized in conjunction with existing processing equipment and can prevent biofouling of water treatment membranes in high volume treatment processes in an environmentally friendly fashion.
摘要:
The present invention provides a method for sterilizing a blood purifier, which method is effective to decrease the amounts of extracts from the blood purifier attributed to the deterioration of the selectively permeable separation membranes with time during and after exposure to a radioactive ray or an electron ray, and which method is highly reliable in safety when employed for hemocatharsis therapy. The present invention also provides a blood purifier package.The present invention relates to a method for sterilizing a blood purifier which comprises substantially dried selectively permeable separation membranes as a main component, by way of the exposure of the same blood purifier to a radioactive ray and/or an electron ray, and this method is characterized in that the blood purifier is sealed in a packaging bag, together with an oxygen scavenger and a humectant or together with an oxygen scavenger capable of releasing a moisture, and is then sterilized in such a sealed state by the above exposure.
摘要:
The present invention provides a blood purifier which shows a decreased amount of hydrogen peroxide extracted from its selectively permeable separation membranes, and thus is highly reliable in its safety in use for hemecatharysis. The present invention relates to a blood purifier which comprises selectively permeable separation membranes as a main component and which is characterized in that the amount of hydrogen peroxide which is extracted from the selectively permeable separation membrane removed from the blood purifier after 3 months or longer has passed since the sterilization of the blood purifier by exposure to a radioactive ray and/or an electron ray is not larger than 10 ppm.
摘要:
Membranes for extracorporeal haemodialysis are prepared from copolymers of acrylonitrile (80-90 percent) and dimethylaminoethyl methacrylate (20-10 percent) prepared by portionwise addition of reactants to a reactor. These have superior transfer properties for urea, creatinine, uric acid, and other blood components as compared with cellulosic membranes, and are prepared as blood envelopes for use in Ross-Muir and other dialyzers.