Patents by Inventor Thomas P. Lawhorn

Thomas P. Lawhorn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for distinguishing leaks from a disengaged canister condition in a reduced pressure treatment system
    Patent number: 8827967
    Abstract: A method of distinguishing leak detection and canister disengagement in a reduced pressure treatment system includes monitoring an actual power level and a source pressure of a reduced pressure pump. The actual power level is compared to a target power level, and the source pressure is compared to a first alarm pressure and a second alarm pressure. A leak alarm is indicated when the actual power level is greater than the target power level and the source pressure is greater than the first alarm pressure. A canister disengaged alarm is indicated when the actual power level is greater than the target power level and the source pressure is less than the second alarm pressure.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: September 9, 2014
    Assignee: KCI Licensing, Inc.
    Inventor: Thomas P. Lawhorn
  • SYSTEM AND METHOD FOR DISTINGUISHING LEAKS FROM A DISENGAGED CANISTER CONDITION IN A REDUCED PRESSURE TREATMENT SYSTEM
    Publication number: 20110172614
    Abstract: A method of distinguishing leak detection and canister disengagement in a reduced pressure treatment system includes monitoring an actual power level and a source pressure of a reduced pressure pump. The actual power level is compared to a target power level, and the source pressure is compared to a first alarm pressure and a second alarm pressure. A leak alarm is indicated when the actual power level is greater than the target power level and the source pressure is greater than the first alarm pressure. A canister disengaged alarm is indicated when the actual power level is greater than the target power level and the source pressure is less than the second alarm pressure.
    Type: Application
    Filed: March 23, 2011
    Publication date: July 14, 2011
    Inventor: Thomas P. Lawhorn
  • System and method for distinguishing leaks from a disengaged canister condition in a reduced pressure treatment system
    Patent number: 7927319
    Abstract: A reduced pressure treatment system includes a processing unit, a reduced pressure source, and a conduit fluidly connected between the reduced pressure source and a tissue site of a patient. The reduced pressure source is configured to operate at a target power level to apply a reduced pressure to the tissue site. A canister is provided to collect fluid drawn from the tissue site. A sensor is provided in communication with the reduced pressure source to determine a source pressure at the reduced pressure source, and an alarm indicator is provided in communication with the processing unit. The processing unit communicates a leak alarm signal or a canister disengaged alarm signal to the alarm indicator when an actual power level of the reduced pressure source exceeds the target power level for a selected period of time.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: April 19, 2011
    Assignee: KCI Licensing, Inc.
    Inventor: Thomas P. Lawhorn
  • System and method for distinguishing leaks from a disengaged canister condition in a reduced pressure treatment system
    Publication number: 20080200857
    Abstract: A reduced pressure treatment system includes a processing unit, a reduced pressure source, and a conduit fluidly connected between the reduced pressure source and a tissue site of a patient. The reduced pressure source is configured to operate at a target power level to apply a reduced pressure to the tissue site. A canister is provided to collect fluid drawn from the tissue site. A sensor is provided in communication with the reduced pressure source to determine a source pressure at the reduced pressure source, and an alarm indicator is provided in communication with the processing unit. The processing unit communicates a leak alarm signal or a canister disengaged alarm signal to the alarm indicator when an actual power level of the reduced pressure source exceeds the target power level for a selected period of time.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 21, 2008
    Inventor: Thomas P. Lawhorn