US 12,133,789 B2
Reduced pressure therapy apparatus construction and control
William W. Gregory, Gainesville, FL (US); William Joseph Jaecklein, Saint Petersburg, FL (US); Kathryn Ann Leigh, Saint Petersburg, FL (US); Paul N. Minor, Raleigh, NC (US); Michael Mosholder, Palm Harbor, FL (US); Felix C. Quintanar, Hull (GB); John P. Racette, Trinity, FL (US); Christopher Rouseff, Saint Petersburg, FL (US); Matthew Smith, Raleigh, NC (US); W. Len Smith, Raleigh, NC (US); and John Wyatt, Raleigh, NC (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US)
Filed by Smith & Nephew, Inc., Memphis, TN (US)
Filed on Mar. 30, 2020, as Appl. No. 16/834,189.
Application 16/834,189 is a continuation in part of application No. 15/500,495, granted, now 10,744,239, previously published as PCT/US2014/066441, filed on Nov. 19, 2014.
Application 16/834,189 is a continuation in part of application No. 15/500,504, abandoned, previously published as PCT/US2015/043004, filed on Jul. 30, 2015.
Claims priority of provisional application 62/031,704, filed on Jul. 31, 2014.
Claims priority of provisional application 62/031,394, filed on Jul. 31, 2014.
Prior Publication US 2020/0289723 A1, Sep. 17, 2020
Int. Cl. A61F 13/05 (2024.01); A61M 1/00 (2006.01)
CPC A61F 13/05 (2024.01) [A61M 1/74 (2021.05); A61M 1/86 (2021.05); A61M 1/96 (2021.05); A61M 1/982 (2021.05); A61M 1/962 (2021.05); A61M 1/984 (2021.05); A61M 2205/15 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/505 (2013.01); A61M 2205/583 (2013.01); A61M 2205/7518 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An apparatus for applying a negative pressure wound therapy to a plurality of wounds, the apparatus comprising:
a negative pressure source configured to be in fluidic communication via a flow path with one wound dressing covering one wound or two wound dressings covering two wounds; and
a controller programmed to:
activate the negative pressure source to provide negative pressure to the one wound in accordance with a first negative pressure setpoint;
determine a first rate of flow in the flow path while a negative pressure wound therapy is applied to the one wound;
determine a first threshold from the first negative pressure setpoint;
detect a first blockage from a comparison of the first rate of flow and the first threshold;
output a first indication of the first blockage;
activate the negative pressure source to simultaneously provide negative pressure to the two wounds in accordance with a second negative pressure setpoint;
determine a second rate of flow in the flow path while the negative pressure wound therapy is applied to the two wounds;
determine a second threshold from the second negative pressure setpoint, the second threshold being different from the first threshold;
detect a second blockage from a comparison of the second rate of flow and the second threshold; and
output a second indication of the second blockage.