초록 ▼

A method and a device for verifying the proper replacement of a used filter that is divided into two chambers by a membrane in a device for extracorporeal treatment of blood. The verification of whether the filter has been properly replaced with a new filter is performed by a pressure retaining test

A method and a device for verifying the proper replacement of a used filter that is divided into two chambers by a membrane in a device for extracorporeal treatment of blood. The verification of whether the filter has been properly replaced with a new filter is performed by a pressure retaining test, which determines whether the membrane of the filter is permeable to gas. In the event the membrane is permeable to gas, it is concluded that the used filter has been replaced by a new filter.

대표청구항 ▼

[ What is claimed is:] [1.] A method for determining if a filter in the fluid system of a device for extracorporeal treatment of blood has been replaced with a new filter, comprising:measuring whether a membrane of the filter that divides the filter into a first and second chamber is permeable to ga

[ What is claimed is:] [1.] A method for determining if a filter in the fluid system of a device for extracorporeal treatment of blood has been replaced with a new filter, comprising:measuring whether a membrane of the filter that divides the filter into a first and second chamber is permeable to gas prior to the membrane having been wetted with fluid assuming the filter to be a new filter; andif the membrane is permeable to gas concluding that the filter is dry and has been replaced, otherwise concluding that the filter is wet and has not been replaced.