REDUCED PRESSURE TREATMENT SYSTEM HAVING BLOCKAGE CLEARING AND DUAL-ZONE PRESSURE PROTECTION CAPABILITIES
7 Assignments
0 Petitions
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.
-
Citations
31 Claims
-
1-30. -30. (canceled)
-
31. Apparatus for detecting a blockage between a tissue site and a reduced pressure source fluidly connected to the tissue site, comprising:
-
a first processor including a first sensing device and configured to measure a tissue site pressure (TSP) proximate the tissue site corresponding to the pressure at the tissue site; a second processor configured to measure a source-pressure (SP) proximate to the reduced pressure source corresponding to the output of the reduced pressure source; and a control processor in communication with the first processor and the second processor to regulate the output of the reduced pressure source in response to the source pressure (SP), the control processor having a first input adapted to be set at a target pressure desired for therapy at the tissue site (TP) and a second input adapted to be set at a first maximum differential pressure (DP1) above the target pressure (TP), and the control processor being configured to (i) determine if the tissue-site pressure TSP is less than the target pressure TP, (ii) calculate a differential pressure (DP) being the difference between the source pressure (SP) and the target pressure (TP), and (iii) determine if the differential pressure (DP) is greater than or equal to the first maximum differential pressure (DP1), and determine whether a change in the source pressure (SP) results in a directionally corresponding change in the tissue-site pressure (TSP).
-
Specification