Pressure control
First Claim
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1. A method for determining pressure provided by a pump of a topical negative pressure (TNP) system, the method comprising:
- determining a value associated with a measured pressure by;
measuring pressure in a lumen connected to a pump inlet; and
determining said value by averaging the measured pressure with previous readings of the pressure taken for a predetermined period;
determining a difference between the measured pressure value and a predetermined desired value; and
increasing or decreasing a speed of pumping of the pump responsive to the difference.
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Abstract
A method and apparatus is disclosed for determining pressure provided by a pump of a topical negative pressure (TNP) system. The method includes the steps of determining a value associated with a measured pressure, determining a difference between the measured pressure value and a predetermined desired value and increasing or decreasing a speed of pumping of the pump responsive the to difference.
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Citations
17 Claims
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1. A method for determining pressure provided by a pump of a topical negative pressure (TNP) system, the method comprising:
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determining a value associated with a measured pressure by; measuring pressure in a lumen connected to a pump inlet; and determining said value by averaging the measured pressure with previous readings of the pressure taken for a predetermined period; determining a difference between the measured pressure value and a predetermined desired value; and increasing or decreasing a speed of pumping of the pump responsive to the difference. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Apparatus for controlling pressure provided by a pump of a topical negative pressure (TNP) system, comprising:
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a pressure sensor configured to measure pressure in a lumen configured to be connected to an inlet to the pump; a user interface via which a user can indicate at least a predetermined desired value; and a processing unit configured to; compare a value associated with the measured pressure with said predetermined value, the value associated with the measured pressure comprising an average of the measured pressure and at least one previous reading of the pressure; scale a result of the comparison according to at least one predetermined constant; and transmit a signal to increase or decrease a pumping speed of the pump responsive to the scaled result. - View Dependent Claims (9, 10, 11, 12)
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13. A topical negative pressure (TNP) system, comprising:
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a vacuum pump configured to move fluid through a fluid flowpath; a pressure sensor configured to measure pressure in the fluid flowpath; and a processing unit configured to; determine a pressure value corresponding to an average of the measured pressure with previous measurements of the pressure taken over a time period; compare the determined pressure value with a desired pressure value; and adjust a pumping speed of the pump in response to the comparison. - View Dependent Claims (14, 15, 16, 17)
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Specification