Patent ID: 8449483

Claim:
A compression device comprising: a user interface; a programmable logic controller in electronic connection with the user interface; a battery power source in electronic connection with the programmable logic controller; a source of fluidic pressure in electronic connection with the programmable logic controller; an electrically-actuatable first valve having a first port in fluidic connection with the source of fluidic pressure and a second port in fluidic connection with a first inflatable bladder, the first valve electrically connected to the programmable logic controller; an electrically-actuatable second valve having a first port in fluidic connection with the source of fluidic pressure and a second port in fluidic connection with a second inflatable bladder, the second valve electrically connected to the programmable logic controller; wherein the programmable logic controller is programmed to cause a repeating sequence of i inflating the first inflatable bladder by opening the first and second ports of the first valve, closing the first and second ports of the second valve, and activating the source of fluidic pressure, ii after a first period of time, deflating the first inflatable bladder by deactivating the source of fluidic pressure, iii inflating the second inflatable bladder by closing the first and second ports of the first valve, opening the first and second ports of the second valve, and activating the source of fluidic pressure, iv after a second period of time, deflating the second inflatable bladder by deactivating the source of fluidic pressure, and wherein the user interface allows the user to select a first mode or a second mode that extends the life of the battery power source by selecting the first period of time or the second period of time that are longer in length than when the first mode is selected, and wherein the user interface allows the user to input a total time of usage when the second mode is selected, and wherein the programmable logic controller measures the power remaining in the battery power source, calculates the first period of time and the second period of time based on the total time of usage and the power remaining, and utilizes the first period of time and the second period of time in repeating sequence.