IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0488541
(2002-09-05)
|
등록번호 |
US-7341578
(2008-03-11)
|
우선권정보 |
DK-2001 01302(2001-09-05) |
국제출원번호 |
PCT/DK02/000577
(2002-09-05)
|
§371/§102 date |
20040304
(20040304)
|
국제공개번호 |
WO03/020188
(2003-03-13)
|
발명자
/ 주소 |
- Bulow,Martin von
- Kristensen,Mogens Guldager
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
11 |
초록
▼
An ostomy appliance having a vent covered by a filter. Gas inlet and outlet openings are provided that are in communication with a filter body and arranged so that in use gas flows through the filter body from the inlet opening to the outlet opening. The gas inlet opening communicates with at least
An ostomy appliance having a vent covered by a filter. Gas inlet and outlet openings are provided that are in communication with a filter body and arranged so that in use gas flows through the filter body from the inlet opening to the outlet opening. The gas inlet opening communicates with at least two separate and independent closed pathways that have respective inlet openings separated from one another. Each of the pathway outlet openings is covered by a microporous membrane showing improved resistance against blocking of the inlet opening of the filter.
대표청구항
▼
The invention claimed is: 1. An ostomy appliance comprising: a front wall and a rear wall of flexible material forming a bag, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls having at least one vent through which gas may escape from the ba
The invention claimed is: 1. An ostomy appliance comprising: a front wall and a rear wall of flexible material forming a bag, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls having at least one vent through which gas may escape from the bag; a filter device that covers said vent, said filter device including a filter having first and second walls with a filter body therebetween, a gas inlet opening in said first wall and a gas outlet opening in said second wall both being in communication with said filter body, said gas inlet and outlet openings being arranged such that in use gas flows through the filter from the gas inlet opening to the gas outlet opening, said gas flow being confined to said filter body; said gas inlet opening of said filter communicating with at least two separate and independent pathway outlet openings of at least two separate and independent closed pathways, respectively, each of said pathway outlet openings being covered by a microporous membrane, said separate and independent closed pathways being defined between said first wall and a further filter device wall having opposing ends sealingly connected to said first wall and a middle portion separated from said first wall by a space to define an area between said sealed ends, said further filter device wall having at least two bag inlet openings separated from one another and communicating with an interior of said bag so that in use, gas flows from the bag inlet openings through said separate and independent closed pathways to the pathway outlet openings, respectively, and then through said gas inlet opening of said filter through said filter body to said gas outlet opening for escape from said appliance; and a sealing member extending across said space to seal said first wall to said further filter device wall at a point between said opposing ends, said sealing member separating said area into said at least two separate and independent closed pathways and said sealing member being configured to prevent gas that enters one of said closed pathways from a respective one of said pathway inlet openings from egress into the other of said closed pathways. 2. The ostomy appliance as claimed in claim 1, wherein the separate and independent pathways stretch essentially along radii of a circle of reference having a perimeter concentric with the gas inlet opening of the filter and the bag inlet openings of the separate and independent pathways are spaced at an angle of at least 45 degrees. 3. The ostomy appliance as claimed in claim 1 wherein said filter body is elongated and substantially flat and is made of a porous filter material, said gas inlet and outlet openings being provided in communication with the filter body material adjacent to its respective longitudinal end regions, said gas inlet and outlet openings being arranged so that in use gas flows longitudinally through the filter from the gas inlet opening to the gas outlet opening. 4. A deodorising filter device for covering a vent of an ostomy appliance or the like, said filter device comprising: a filter including a filter body of a porous filter material interposed between first and second walls that are impervious to gas and liquid and which are sealed to the filter body along edges thereof; a gas inlet opening in said first filter wall and a gas outlet opening in said second filter wall both being in communication with said filter body, said gas inlet and outlet openings being arranged such that in use gas flows through the filter from the gas inlet opening to the gas outlet opening, said gas flow being confined to said filter body; a further filter device wall separated from said first filter wall by a space to define a pre-filter area and having at least two baa inlet openings communicating with an interior of said baa and with said prefilter area; a barrier member dividing said pre-filter area into two separate and independent closed pathways each of which communicates with only one of said baa inlet openings and each of which also communicates with said gas inlet opening of said filter through a respective one of two pathway outlet openings so that in use, gas flows from the bag inlet openings through said closed pathways to the pathway outlet openings, respectively, and then through said gas inlet opening of said filter through said filter body to said gas outlet opening for escape from said filter device; and each of the pathway outlet openings of the separate and independent closed pathways being covered by a microporous membrane. 5. The filter device as claimed in claim 4, wherein said filter body is elongated and substantially flat, said gas inlet and outlet openings being provided in communication with the filter body material adjacent to its respective longitudinal end regions so that in use gas flows longitudinally through the filter from the gas inlet opening to the gas outlet opening, both of the gas and liquid impervious walls being sealed to the upper and lower surfaces of the filter body. 6. The filter device as claimed in claim 4, wherein said gas inlet opening of said filter communicates with two spaced outlet openings of said two closed pathways, respectively, each of said outlet openings being covered by a microporous hydrophobic membrane. 7. The filter device as claimed in claim 6, wherein said membranes are spaced longitudinally from one another with respect to said filter, said barrier member positioned between said membranes. 8. The filter device as claimed in claim 4, wherein the pathways stretch essentially along radii of a circle of reference having a perimeter concentric with the gas inlet opening of the filter, and the bag inlet openings of the pathways are spaced at an angle of at least 45 degrees. 9. The filter device as claimed in claim 6, wherein the membranes covering the two spaced filter inlet openings include a layer of a non-woven material and a layer of an oleophobic PTFE-material. 10. The filter device as claimed in claim 4, wherein a foam material is present in the pathways. 11. The filter device as claimed in claim 5, wherein the filter body has a curved shape. 12. A filter device for covering a vent of an ostomy bag, said filter device comprising: a filter having a filter body of a porous filter material interposed between first and second walls which are gas and liquid impervious and sealed to the filter body along edges thereof, said filter body being in communication with a gas inlet opening in said first wall and a gas outlet opening in said second wall, said gas inlet and outlet openings being arranged such that in use gas flows through the filter from the gas inlet opening, through the filter body to the gas outlet opening; said gas inlet opening in said first wall of said filter being covered by a microporous hydrophobic membrane which is covered on a side opposite said filter body by a filter device wall that is spaced from said first filter wall to define an elongated area having a longitudinal length for placing a foam material that covers said membrane and prevents physical blocking thereof; and a sealing member extending transversely to said longitudinal length to seal said first wall to said filter device wall at a point along said longitudinal length of said filter device wall, said sealing member separating said elongated area into two separate and independent closed pathways that are sealed from one another and that have respective pathway inlet openings in said filter device wall separated from one another and each communicating with an interior of said bag, each pathway having a respective pathway outlet communicating with said microporous membrane-covered filter inlet opening, gas entering one of said closed pathways from a respective one of said pathway inlet openings being prevented from egress into the other of said closed pathways by said sealing member. 13. The filter device as claimed in claim 12, wherein a foam material is present in each of said pathways. 14. The filter device as claimed in claim 12, wherein the membrane covering the filter inlet opening includes a layer of a non-woven material and a layer of an oleophobic PTFE-material. 15. The filter device as claimed in claim 12, wherein said filter is elongated and substantially flat, said gas inlet and outlet openings being provided in communication with the filter body adjacent to its respective longitudinal end regions so that in use gas flows longitudinally through the filter from the gas inlet opening to the gas outlet opening, both of the gas and liquid impervious walls being sealed to the upper and lower surfaces of the filter body. 16. The filter device as claimed in claim 12, wherein said filter device is placed inside an ostomy bag such that said gas outlet opening of said filter is aligned with said vent. 17. The filter device as claimed in claim 12, wherein said filter device is placed outside an ostomy bag such that said bag includes two vents and each of said pathway inlet openings is aligned with a respective one of said vents. 18. The filter device as claimed in claim 4, wherein said barrier member is a sealing member that sealingly separates said pathways from one another. 19. The filter device as claimed in claim 18, wherein said sealing member extends across said space transversely to a longitudinal length of said filter device. 20. The filter device as claimed in claim 18, wherein said sealing member joins said first wall to said further filter device wall.
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