Enclosure ventilation filter and assembly method
Inventors
Keleny, Lloyd G. • KALAYCI, VELI E. • Hebert, Michael J. • Elsayed, Yehya A. • Mulder, David W. • Dallas, Andrew J.
Assignees
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Publication Number
US-8979811-B2
Publication Date
2015-03-17
Expiration Date
Abstract
A filter assembly for an enclosure, particularly for an ostomy bag, is described having an enclosure side, a first layer which is gas permeable, and an adsorbent layer comprising adsorbent particles dispersed in a fine fiber web. The enclosure side of the filter assembly includes an adhesive zone in which adhesive is present having an outer adhesive perimeter and a weld area surrounding at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the enclosure at the weld area. A method of assembly is also described.
Core Innovation
The invention relates to an ostomy filter and an ostomy bag that define a stoma opening and a vent opening, where an ostomy filter is attached to cover the vent opening. The ostomy filter includes a bag side and a side opposite from the bag side, and the bag side is secured to the ostomy bag. The filter includes a first layer that is gas permeable and liquid impermeable, and an adsorbent layer of adsorbent particles dispersed in a fine fiber web.
The bag side of the ostomy filter comprises an adhesive zone with an outer adhesive perimeter and an inner adhesive perimeter, where the inner adhesive perimeter surrounds an exit opening. Adhesive in the adhesive zone attaches the ostomy filter and the ostomy bag at the adhesive zone. A weld area surrounds the adhesive zone, and the filter assembly is heat-sealable to the ostomy bag at the weld area.
The disclosed embodiments also include systems and assemblies for enclosures that use multiple filter assemblies arranged on a release liner. Each filter assembly includes an enclosure side and a side opposite from the enclosure side, a first layer that is gas permeable, and an adsorbent layer comprising adsorbent particles dispersed in a fine fiber web. The enclosure side includes an adhesive zone with an outer adhesive perimeter and a weld area surrounding at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the enclosure at the weld area.
Claims Coverage
The document contains three independent claims: one directed to an ostomy bag with an attached ostomy filter, and two directed to enclosure filter assemblies and a system using a release liner. Across these independent claims, the inventive coverage centers on a gas-permeable first layer and an adsorbent layer of adsorbent particles dispersed in a fine fiber web, combined with an adhesive zone and a weld area arrangement for securing the filter to an enclosure.
Ostomy filter attached to cover a vent opening
An ostomy bag defining a stoma opening and a vent opening, and an ostomy filter attached to the ostomy bag to cover the vent opening, the ostomy filter comprising a bag side and a side opposite from the bag side, wherein the bag side of the ostomy filter is secured to the ostomy bag.
Gas-permeable and liquid-impermeable first layer with adsorbent particles in a fine fiber web
A first layer which is gas permeable and liquid impermeable; and an adsorbent layer of adsorbent particles dispersed in a fine fiber web.
Adhesive zone with inner perimeter surrounding an exit opening and weld area for heat sealing
An adhesive zone having an outer adhesive perimeter and an inner adhesive perimeter, wherein the inner adhesive perimeter surrounds an exit opening, wherein adhesive attaches the ostomy filter and the ostomy bag at the adhesive zone; and a weld area surrounding the adhesive zone, where the filter assembly is heat-sealable to the ostomy bag at the weld area.
Release liner carrying multiple enclosure-side filter assemblies
A release liner and a plurality of filter assemblies located on the release liner, each filter assembly comprising an enclosure side and a side opposite from the enclosure side, a first layer which is gas permeable, and an adsorbent layer comprising adsorbent particles dispersed in a fine fiber web.
Adhesive zone with outer perimeter and weld area for heat sealing to an enclosure
The enclosure side of the filter assembly comprises an adhesive zone having an outer adhesive perimeter; and a weld area surrounding at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the enclosure at the weld area.
Across the independent claims, the core claim coverage is an enclosure ventilation and ostomy filter architecture having a gas-permeable first layer and an adsorbent layer of adsorbent particles dispersed in a fine fiber web, combined with an adhesive zone and a weld area configured for heat sealing to the enclosure. The system claim further adds the arrangement of multiple such filter assemblies on a release liner.
Stated Advantages
Improved H2S breakthrough time compared to commercial ostomy filter media.
Lower pressure drop compared to commercial ostomy filter media.
Documented Applications
Ventilation/breather filtration for an ostomy bag enclosure, to address a vent opening using an adsorbent breather/ventilation filter with heat-sealable attachment.
Enclosure filter assembly systems that mount multiple filters on a release liner for subsequent placement onto an enclosure.
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