REDUCED PRESSURE TREATMENT SYSTEM HAVING BLOCKAGE CLEARING AND DUAL-ZONE PRESSURE PROTECTION CAPABILITIES
First Claim
1. Apparatus for detecting a blockage between a tissue site and a reduced pressure source fluidly connected to the tissue site, comprising:
- a sensing device adapted to be in communication with the reduced pressure source to measure a source pressure corresponding to the output of the reduced pressure source; and
a therapy unit having an input/output unit in communication with the sensing device and adapted to communicate with the reduced pressure source, and a processing unit in communication with the input/output unit to regulate the output of the reduced pressure source in response to the source pressure, the processing unit being configured to calculate a differential pressure between the source pressure and a target pressure and to regulate the output of the reduced pressure source such that the differential pressure does not exceed (a) a first maximum differential pressure if a blockage is present between the reduced pressure source and the tissue site and (b) a second maximum differential pressure if a blockage is not present between the reduced pressure source and the tissue site.
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Accused Products
Abstract
A method of treating a tissue site is provided. The method includes applying a reduced pressure to a tissue site with a reduced pressure source. A source pressure is monitored at the reduced pressure source, and a differential pressure is determined between the source pressure and the desired tissue site pressure. If a blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a first maximum differential pressure. If no blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a second maximum differential pressure.
51 Citations
30 Claims
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1. Apparatus for detecting a blockage between a tissue site and a reduced pressure source fluidly connected to the tissue site, comprising:
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a sensing device adapted to be in communication with the reduced pressure source to measure a source pressure corresponding to the output of the reduced pressure source; and a therapy unit having an input/output unit in communication with the sensing device and adapted to communicate with the reduced pressure source, and a processing unit in communication with the input/output unit to regulate the output of the reduced pressure source in response to the source pressure, the processing unit being configured to calculate a differential pressure between the source pressure and a target pressure and to regulate the output of the reduced pressure source such that the differential pressure does not exceed (a) a first maximum differential pressure if a blockage is present between the reduced pressure source and the tissue site and (b) a second maximum differential pressure if a blockage is not present between the reduced pressure source and the tissue site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 29, 30)
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10. A method for detecting a blockage between a tissue site and a reduced pressure source fluidly connected to the tissue site, comprising:
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monitoring a source pressure corresponding to the output of the reduced pressure source; determining a differential pressure between the source pressure and a target pressure; regulating the reduced pressure source by limiting the differential pressure to a first maximum differential pressure in response to a blockage being present between the reduced pressure source and the tissue site; and regulating the reduced pressure source by limiting the differential pressure to a second maximum differential pressure in response to a blockage not being present between the reduced pressure source and the tissue site. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A reduced pressure treatment system comprising:
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a means for applying reduced pressure to a tissue site; a means for monitoring a source pressure at the means for applying reduced pressure; a means for determining a differential pressure between the source pressure and a desired tissue site pressure; a means for limiting the differential pressure to a first maximum differential pressure if a blockage is present between the tissue site and the means for applying reduced pressure; and a means for limiting the differential pressure to a second maximum differential pressure that is higher than the first maximum differential pressure if no blockage is present between the tissue site and the means for applying reduced pressure. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification