US 11,744,741 B2
Negative pressure dressing and method of using same
Richard Scott Weston, Encinitas, CA (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US)
Filed by Smith & Nephew, Inc., Memphis, TN (US)
Filed on Jul. 9, 2021, as Appl. No. 17/372,191.
Application 17/372,191 is a continuation of application No. 15/441,899, filed on Feb. 24, 2017, granted, now 11,058,807.
Application 15/441,899 is a continuation of application No. 14/610,806, filed on Jan. 30, 2015, granted, now 9,610,390, issued on Apr. 4, 2017.
Application 14/610,806 is a continuation of application No. 12/922,130, granted, now 8,945,030, issued on Feb. 3, 2015, previously published as PCT/US2009/036829, filed on Mar. 11, 2009.
Claims priority of provisional application 61/036,020, filed on Mar. 12, 2008.
Prior Publication US 2022/0001097 A1, Jan. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 13/00 (2006.01); A61M 1/00 (2006.01); A61F 13/02 (2006.01)
CPC A61F 13/00068 (2013.01) [A61F 13/0216 (2013.01); A61M 1/75 (2021.05); A61M 1/962 (2021.05); A61F 2013/00174 (2013.01); A61M 1/73 (2021.05); A61M 1/912 (2021.05); A61M 1/915 (2021.05); A61M 1/94 (2021.05); A61M 2205/18 (2013.01); A61M 2205/3379 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus for treating a wound, the apparatus comprising:
a wound cover configured to be placed over and enclose a wound so as to define a space between at least a portion of the wound cover and the wound and to maintain a reduced pressure in the space when reduced pressure is applied to the space;
a vacuum pump configured to provide reduced pressure to a space between the wound cover and the wound;
a sensor configured to detect a flow rate of blood adjacent to the wound, the detection occurring through the intact dermis adjacent to the wound; and
a control device configured to control application of reduced pressure applied to the space between the wound cover and the wound, the control device configured to selectively control the level of negative pressure between the wound cover and the wound based at least on a detection of a flow rate of blood adjacent to the wound.