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;
an input/output unit in communication with the sensing device and adapted to be in communication 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.
104 Citations
21 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; an input/output unit in communication with the sensing device and adapted to be in communication 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, 10, 11)
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12. A method for controlling application of reduced pressure from a reduced pressure source to a 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 (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification