Flexible biological fluid filters
First Claim
1. A biological fluid filter assembly comprising:
- a flexible housing having first and second walls;
a filtration medium at least partially positioned between the first and second walls of the housing; and
a seal joining the first and second walls of the housing, the seal passing through the filtration medium to define a perimeter within the biological fluid filter assembly, with substantially no filtration medium present in a central section of the seal along at least a majority of the extent of the perimeter defined by the seal.
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Accused Products
Abstract
Filter assemblies are processing biological fluid, such as blood or a blood component containing leukocytes. The filter assemblies include a flexible housing with first and second walls. A filtration medium and a support member are at least partially positioned between the walls of the housing, with a seal joining the walls of the housing, the filtration medium, and the support member. The filter assemblies may further include a pre-filter and/or a post-filter positioned between the walls of the housing. If provided, the pre- and post-filter may be positioned on opposite walls of the filtration medium, with the post-filter being a mesh positioned between the filtration medium and one of the walls of the housing or within an opening defined by the support member. A seal of the filter assembly may pass through the filtration medium, with the filtration medium being substantially omitted in a section of the seal.
437 Citations
20 Claims
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1. A biological fluid filter assembly comprising:
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a flexible housing having first and second walls; a filtration medium at least partially positioned between the first and second walls of the housing; and a seal joining the first and second walls of the housing, the seal passing through the filtration medium to define a perimeter within the biological fluid filter assembly, with substantially no filtration medium present in a central section of the seal along at least a majority of the extent of the perimeter defined by the seal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification