Method for manufacturing plastic container containing infusion solution which does not allow deterioration of infusion solution for long period of time
First Claim
1. A method for manufacturing a plastic container containing an infusion solution which does not allow deterioration of the infusion solution over a long period of time, comprising the steps of:
- providing a container which is made of a flexible plastic material having a heat resistance able to withstand heat of autoclaving sterilization and which holds an infusion solution containing components which may easily deteriorate upon contact with oxygen;
packaging the container hermetically within a first plastic packaging material having oxygen gas and steam permeabilities during autoclaving sterilization, and also having a heat resistance able to withstand the heat of autoclaving sterilization;
autoclaving sterilizing the container packaged in the first packaging material in an atmosphere of saturated steam containing substantially no oxygen by introducing the saturated steam through the first packaging material;
cooling the packaged and sterilized container, while substantially maintaining a pressure of autoclaving sterilization by introducing an inert gas into the atmosphere; and
further packaging the container, which is already packaged in said first packaging material, within a second packaging material which completely surrounds said first packaging material, said second packaging material having a high oxygen gas impermeability, said further packaging step being carried out without introducing an atmosphere surrounding the first packaging material into the space between the container and the first packaging material.
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Accused Products
Abstract
A plastic container containing an infusion solution which may not allow deterioration of the infusion solution over a long period of time, is prepared by providing a container which is made of a flexible plastic material having a heat resistance able to withstand heat of autoclaving sterilization and which holds an infusion solution containing components which may easily deteriorate upon contact with oxygen; the container is packaged with a first packaging material which consists of a plastic material having a gas permeability and a heat resistance able to withstand the heat of autoclaving sterilization. The container packaged with the first packaging material is sterilized by autoclaving in an atmosphere of saturated steam containing substantially no oxygen. The packaged and sterilized container is cooled while substantially maintaining a pressure of autoclaving sterilization by introducing an inert gas into the atmosphere. The container is further packaged with a second packaging material which has a high oxygen gas impermeability.
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Citations
19 Claims
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1. A method for manufacturing a plastic container containing an infusion solution which does not allow deterioration of the infusion solution over a long period of time, comprising the steps of:
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providing a container which is made of a flexible plastic material having a heat resistance able to withstand heat of autoclaving sterilization and which holds an infusion solution containing components which may easily deteriorate upon contact with oxygen; packaging the container hermetically within a first plastic packaging material having oxygen gas and steam permeabilities during autoclaving sterilization, and also having a heat resistance able to withstand the heat of autoclaving sterilization; autoclaving sterilizing the container packaged in the first packaging material in an atmosphere of saturated steam containing substantially no oxygen by introducing the saturated steam through the first packaging material; cooling the packaged and sterilized container, while substantially maintaining a pressure of autoclaving sterilization by introducing an inert gas into the atmosphere; and further packaging the container, which is already packaged in said first packaging material, within a second packaging material which completely surrounds said first packaging material, said second packaging material having a high oxygen gas impermeability, said further packaging step being carried out without introducing an atmosphere surrounding the first packaging material into the space between the container and the first packaging material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification