System and method for determining a fill status of a canister of fluid in a reduced pressure treatment system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-001/00
A61M-027/00
A61M-005/14
F16M-011/04
F16M-013/02
G01F-023/14
A61N-001/04
A61N-005/06
출원번호
US-0265571
(2014-04-30)
등록번호
US-9199011
(2015-12-01)
발명자
/ 주소
Locke, Christopher Brian
Robinson, Timothy Mark
Blandford, David Robson
출원인 / 주소
KCI Licensing, Inc.
인용정보
피인용 횟수 :
1인용 특허 :
97
초록▼
A reduced pressure treatment system is provided that includes a canister that is fluidly connected to a tissue site and is configured to receive fluid drawn from the tissue site under the influence of a reduced pressure. A reduced pressure source provides the reduced pressure and is fluidly connecte
A reduced pressure treatment system is provided that includes a canister that is fluidly connected to a tissue site and is configured to receive fluid drawn from the tissue site under the influence of a reduced pressure. A reduced pressure source provides the reduced pressure and is fluidly connected to the tissue site by a fluid communication path, which may include a source conduit, the canister, and a target conduit. A sensing device communicates with the source conduit and is configured to sense a pressure in the source conduit. A valve communicates with the source conduit and is configured to vent the reduced pressure. A processing unit communicates with the sensing device and the valve and is configured to open the valve for a selected amount of time, determine a decay of reduced pressure, and determine a fill status of the canister based on the decay of reduced pressure.
대표청구항▼
1. An apparatus for determining a fill status of a container of fluid in a tissue treatment system, the apparatus comprising: a sensing device configured to sense a reduced pressure in a source conduit;a valve configured to release the reduced pressure in the source conduit; anda processing unit in
1. An apparatus for determining a fill status of a container of fluid in a tissue treatment system, the apparatus comprising: a sensing device configured to sense a reduced pressure in a source conduit;a valve configured to release the reduced pressure in the source conduit; anda processing unit in communication with the sensing device and the valve, and configured to:measure a decay of the reduced pressure in the source conduit if the valve releases the reduced pressure; anddetermine from the decay a fill status of the container. 2. The apparatus of claim 1, wherein the sensing device further comprises a flow sensor in communication with the source conduit. 3. The apparatus of claim 1, wherein the sensing device further comprises a pressure sensor in communication with the source conduit. 4. The apparatus of claim 1, wherein the processing unit further comprises a timer to measure an amount of time it takes for pressure in the source conduit to reach a selected pressure threshold. 5. The apparatus of claim 4, wherein the processing unit is further configured to: determine a pressure attained within the source conduit following the selected amount of time; anddetermine the fill status of the container based on the pressure attained. 6. The apparatus of claim 1, wherein the fill status indicates whether the container is full or is not full. 7. The apparatus of claim 1, wherein: the valve selectively releases the reduced pressure from at least a portion of the source conduit; andthe decay of reduced pressure is determined in the portion of the source conduit. 8. The apparatus of claim 1, wherein the valve comprises an electrically or mechanically-actuated valve. 9. The apparatus of claim 1, further comprising a container-full alarm in communication with the processing unit and configured to alert a user if the container is full. 10. The apparatus of claim 1, further comprising: a second valve between a tissue site and the container configured to be closed while the reduced pressure is released;wherein an empty volume of the container is determined based on the decay. 11. The apparatus of claim 10, wherein the empty volume is monitored to determine a fluid flow rate from the tissue site. 12. The apparatus of claim 1, wherein the source conduit is adapted to fluidly connect a reduced-pressure source to the container. 13. The apparatus of claim 1, wherein the processing unit is further configured to determine whether a blockage exists within the source conduit. 14. An apparatus for reduced-pressure therapy, the apparatus comprising: a sensing device configured to sense a reduced pressure in a source conduit; anda processing unit in communication with the sensing device and configured to: measure the reduced pressure applied to the source conduit;measure a decay of the reduced pressure as the reduced pressure is released; anddetermine from the measured decay a fill status of a container in fluid communication with the source conduit. 15. The apparatus of claim 14, wherein the fill status indicates whether the container is full or is not full. 16. The apparatus of claim 14, wherein the processing unit is further configured to; set a pressure threshold below the reduced pressure;upon release of the reduced pressure, measure the time for the container to attain the pressure threshold; anddetermine the fill status of the container based on the measured time. 17. The apparatus of claim 14, wherein the sensing device is positioned along the conduit between a tissue site and a reduced-pressure source. 18. The apparatus of claim 17, wherein the sensing device is positioned on the source conduit between the reduced-pressure source and the container. 19. The apparatus of claim 14, further comprising a valve in communication with the source conduit. 20. The apparatus of claim 19, wherein the valve is configured to release the reduced pressure. 21. The apparatus of claim 14, wherein determining a fill status includes determining a fill level. 22. The apparatus of claim 21, wherein the processing unit is further configured to alert a user that the container is full if the fill level of the container indicates a full container. 23. The apparatus of claim 14, wherein the processing unit is further configured to differentiate between a full container and a blocked source conduit. 24. The apparatus of claim 23, wherein the processing unit is further configured to signal a first alarm for the full container and signaling a second alarm for the blocked source conduit. 25. The apparatus of claim 14, wherein the processing unit is further configured to determine a decay of the reduced pressure over a selected amount of time. 26. The apparatus of claim 25, wherein the processing unit is further configured to distinguish between a full container and a blocked conduit based on a rate of decay of the reduced pressure. 27. The apparatus of claim 14, wherein the source conduit is adapted to fluidly connect a reduced-pressure source to the container. 28. The apparatus of claim 14, wherein the processing unit is further configured to determine whether a blockage exists within the conduit. 29. An apparatus for determining a fill status of a container, the apparatus comprising: a means for detecting whether a blockage condition exists between a reduced-pressure source and a tissue site;a means for determining a pressure decay in a conduit fluidly connecting the reduced-pressure source to the tissue site after the blockage condition is detected; anda means for determining whether the container is full based on pressure decay data. 30. The apparatus of claim 29, further comprising a means for signaling that a blockage exists between the container and a tissue site based on a determination that the container is not full.
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