초록 ▼

A filter for a surgical drainage bag has a filter layer of activated carbon cloth. Gases may pass through this filter layer from the interior of the bag. A first layer of gas permeable thermoplastics material is arranged in contact with the front side of the filter layer. A barrier layer of gas perm

A filter for a surgical drainage bag has a filter layer of activated carbon cloth. Gases may pass through this filter layer from the interior of the bag. A first layer of gas permeable thermoplastics material is arranged in contact with the front side of the filter layer. A barrier layer of gas permeable hydrophobic material has its rear side in contact with the front side of the first layer. A second layer of gas permeable thermoplastics material has its rear side in contact with the front side of the barrier layer. All the various layers are secured together by a peripheral seal.

대표청구항 ▼

A filter for a surgical drainage bag comprising a filter layer of activated carbon cloth through which gases may pass from the interior of the bag, a first layer of gas permeable thermoplastic material in contact with one side of the filter layer, a barrier layer of gas permeable hydrophobic materia

A filter for a surgical drainage bag comprising a filter layer of activated carbon cloth through which gases may pass from the interior of the bag, a first layer of gas permeable thermoplastic material in contact with one side of the filter layer, a barrier layer of gas permeable hydrophobic material having one side in contact with said first layer, said hydrophobic material being constructed of a material that is substantially impervious to liquid discharged from a stoma and permitting adequate flow of gas at a pressure of 150 mm of water or less, a second layer of gas permeable thermoplastic material having one side in contact with the other side of the barrier layer, and a peripheral seal extending through all of said layers to secure together said layers.