US 12,367,974 B2
Wound therapy system with wound volume estimation
Brett L. Moore, San Antonio, TX (US); Shannon C. Ingram, Bulverde, TX (US); and Justin Rice, Denver, CO (US)
Assigned to Solventum Intellectual Properties Company, Maplewood, MN (US)
Filed by Solventum Intellectual Properties Company, Maplewood, MN (US)
Filed on Jul. 26, 2022, as Appl. No. 17/873,877.
Application 17/873,877 is a continuation of application No. 16/366,407, filed on Mar. 27, 2019, granted, now 11,426,506.
Prior Publication US 2022/0362454 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/00 (2006.01); G16H 40/63 (2018.01); G16H 50/50 (2018.01)
CPC G16H 40/63 (2018.01) [A61M 1/73 (2021.05); A61M 1/742 (2021.05); A61M 1/77 (2021.05); A61M 1/85 (2021.05); A61M 1/92 (2021.05); A61M 1/96 (2021.05); G16H 50/50 (2018.01); A61M 2205/15 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/3379 (2013.01); A61M 2205/50 (2013.01); A61M 2205/702 (2013.01); A61M 2205/7536 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A wound therapy device comprising:
a pump fluidly coupled to a negative pressure circuit and configured to produce a negative pressure at a wound or within the negative pressure circuit, wherein the negative pressure circuit is configured to apply negative pressure to the wound;
a pressure sensor configured to measure the negative pressure within a negative pressure circuit or at the wound; and
a controller configured to:
operate the pump to produce a negative pressure within the negative pressure circuit;
receive one or more pressure measurements of the pressure sensor over a predetermined time period;
determine a leakage rate based on the one or more received pressure measurements of the pressure sensor over the predetermined time period;
vent the negative pressure circuit to atmospheric pressure;
operate the pump to decrease the negative pressure within the negative pressure circuit at a predetermined rate;
monitor an amount of elapsed time that the pump operates at the predetermined rate until a predetermined pressure is achieved within the negative pressure circuit; and
estimate a volume of the wound based on the leakage rate and the amount of elapsed time.