Method for providing negative pressure to a negative pressure wound therapy bandage
First Claim
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1. A method for providing negative pressure to a negative pressure wound therapy bandage, the method comprising:
- receiving a therapeutic negative pressure setting for a pumping device having a pump, wherein the pumping device is fluidically connected to the negative pressure wound therapy bandage;
determining a target negative pressure associated with the therapeutic negative pressure, the target negative pressure being less negative than the therapeutic negative pressure; and
,achieving the target negative pressure by;
cycling the pump on and off to create a negative pressure under the negative pressure wound therapy bandage;
obtaining a plurality of samples of the negative pressure under the negative pressure wound therapy bandage at a first sampling rate;
calculating an average of a number of consecutive samples;
comparing the average to the target negative pressure;
continuing to cycle the pump on and off until the average is more negative than the target pressure; and
after cycling the pump on and off until the average is more negative than the target pressure after a complete off cycle, sampling the negative pressure under the negative pressure wound therapy bandage at a second sampling rate less than the first sampling rate.
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Abstract
A method for providing a negative pressure wherein a pump is cycled on and off to achieve a target negative pressure, which is set slightly lower than the therapeutic negative pressure. A device determines the actual pressure by averaging samples which may occur at a different rate than the pump cycle.
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Citations
19 Claims
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1. A method for providing negative pressure to a negative pressure wound therapy bandage, the method comprising:
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receiving a therapeutic negative pressure setting for a pumping device having a pump, wherein the pumping device is fluidically connected to the negative pressure wound therapy bandage; determining a target negative pressure associated with the therapeutic negative pressure, the target negative pressure being less negative than the therapeutic negative pressure; and
,achieving the target negative pressure by; cycling the pump on and off to create a negative pressure under the negative pressure wound therapy bandage; obtaining a plurality of samples of the negative pressure under the negative pressure wound therapy bandage at a first sampling rate; calculating an average of a number of consecutive samples; comparing the average to the target negative pressure; continuing to cycle the pump on and off until the average is more negative than the target pressure; and after cycling the pump on and off until the average is more negative than the target pressure after a complete off cycle, sampling the negative pressure under the negative pressure wound therapy bandage at a second sampling rate less than the first sampling rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 17)
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12. A method for providing negative pressure to a negative pressure wound therapy bandage, the method comprising:
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receiving a setting of a therapeutic negative pressure for a pumping device having a pump, wherein the pumping device is fluidically connected to the negative pressure wound therapy bandage; determining a target negative pressure associated with the therapeutic negative pressure, the target negative pressure being less negative than the therapeutic negative pressure; and
,achieving the target negative pressure by; cycling the pump on and off for an amount of time to create a negative pressure under the negative pressure wound therapy bandage; obtaining a plurality of samples of the negative pressure under the negative pressure wound therapy bandage at a first sampling rate; calculating an average of a number of consecutive samples; comparing the average to the target negative pressure, wherein comparing the average occurs at a rate faster than the rate of calculating the average; and
,if the average is not more negative than the target negative pressure, repeating cycling the pump on and off, obtaining the plurality of samples, calculating the average, and comparing the average until the average is more negative than the target negative pressure. - View Dependent Claims (13, 14, 15)
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18. A negative pressure wound therapy apparatus comprising:
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a negative pressure source configured to be fluidically connected to a wound dressing, the wound dressing configured to be placed over a wound; a pressure sensor configured to determine negative pressure under the dressing; and a controller configured to; receive a therapeutic negative pressure setting for the negative pressure source; determine a target negative pressure associated with the therapeutic negative pressure, the target negative pressure being less negative than the therapeutic negative pressure; and operate the negative pressure source to achieve the target negative pressure, the controller further configured to; cycle the negative pressure source on and off to create a negative pressure under the dressing; obtain, from the pressure sensor, a plurality of samples of the negative pressure under the dressing at a first sampling rate; calculate an average of a number of consecutive samples; compare the average to the target negative pressure; continue to cycle the negative pressure source on and off until the average is more negative than the target pressure; and sample the negative pressure under the dressing during at a second sampling rate after the negative pressure source has been off for an amount of time. - View Dependent Claims (19)
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Specification